ztest crash

[tycho]

ztest is crashing with an assertion failure:

ztest: ../../lib/libzpool/kernel.c:301: Assertion `pthread_mutex_destroy(&(mp)->m_lock) == 0 (0x10 == 0x0)' failed.

Here's a full backtrace:

snoonan@dispater ~/Development/zfs/zfs
$ env LD_LIBRARY_PATH=lib/libzpool/.libs gdb cmd/ztest/.libs/ztest 
GNU gdb (GDB) 7.7.1
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from cmd/ztest/.libs/ztest...done.
(gdb) set follow-fork-mode child
(gdb) run
Starting program: /home/snoonan/Development/zfs/zfs/cmd/ztest/.libs/ztest 
warning: Could not load shared library symbols for linux-vdso.so.1.
Do you need "set solib-search-path" or "set sysroot"?
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New process 17860]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
process 17860 is executing new program: /home/snoonan/Development/zfs/zfs/cmd/ztest/.libs/ztest
warning: Could not load shared library symbols for linux-vdso.so.1.
Do you need "set solib-search-path" or "set sysroot"?
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0x7ffff7ff8700 (LWP 17861)]
[New Thread 0x7ffff7fec700 (LWP 17862)]
[New Thread 0x7ffff7fe0700 (LWP 17863)]
[New Thread 0x7ffff7fd4700 (LWP 17864)]
[New Thread 0x7ffff7fc8700 (LWP 17865)]
[New Thread 0x7ffff7fa9700 (LWP 17866)]
[New Thread 0x7ffff7f9d700 (LWP 17867)]
[New Thread 0x7ffff7f91700 (LWP 17868)]
[New Thread 0x7ffff7f85700 (LWP 17869)]
[New Thread 0x7ffff7f79700 (LWP 17870)]
[New Thread 0x7ffff7f6d700 (LWP 17871)]
[New Thread 0x7ffff7f61700 (LWP 17872)]
[New Thread 0x7ffff7f55700 (LWP 17873)]
[New Thread 0x7ffff7f49700 (LWP 17874)]
[New Thread 0x7ffff7f3d700 (LWP 17875)]
[New Thread 0x7ffff7f31700 (LWP 17876)]
[New Thread 0x7ffff7f25700 (LWP 17877)]
[New Thread 0x7ffff7f19700 (LWP 17878)]
[New Thread 0x7ffff7f0d700 (LWP 17879)]
[New Thread 0x7ffff7f01700 (LWP 17880)]
[New Thread 0x7ffff7ef5700 (LWP 17881)]
[New Thread 0x7ffff7ee9700 (LWP 17882)]
[New Thread 0x7ffff7edd700 (LWP 17883)]
[New Thread 0x7ffff7ed1700 (LWP 17884)]
[New Thread 0x7ffff7ec5700 (LWP 17885)]
[New Thread 0x7ffff7eb9700 (LWP 17886)]
[New Thread 0x7ffff7ead700 (LWP 17887)]
[New Thread 0x7ffff7ea1700 (LWP 17888)]
[New Thread 0x7ffff7e95700 (LWP 17889)]
[New Thread 0x7ffff7e89700 (LWP 17890)]
[New Thread 0x7ffff7e7d700 (LWP 17891)]
[New Thread 0x7ffff7e71700 (LWP 17892)]
[New Thread 0x7ffff7e65700 (LWP 17893)]
[New Thread 0x7ffff7e59700 (LWP 17894)]
[New Thread 0x7ffff7e4d700 (LWP 17895)]
[New Thread 0x7ffff7e41700 (LWP 17896)]
[New Thread 0x7ffff7e35700 (LWP 17897)]
[New Thread 0x7ffff7e29700 (LWP 17898)]
[New Thread 0x7ffff7e1d700 (LWP 17899)]
[New Thread 0x7ffff7e11700 (LWP 17900)]
[New Thread 0x7ffff5f07700 (LWP 17901)]
[New Thread 0x7ffff5efb700 (LWP 17902)]
[New Thread 0x7ffff5eef700 (LWP 17903)]
[New Thread 0x7ffff5ee3700 (LWP 17904)]
[New Thread 0x7ffff5ed7700 (LWP 17905)]
[New Thread 0x7ffff5ecb700 (LWP 17906)]
[New Thread 0x7ffff5ebf700 (LWP 17907)]
[New Thread 0x7ffff5eb3700 (LWP 17908)]
[New Thread 0x7ffff5ea7700 (LWP 17909)]
[New Thread 0x7ffff5e9b700 (LWP 17910)]
[New Thread 0x7ffff5e8f700 (LWP 17911)]
[New Thread 0x7ffff5e83700 (LWP 17912)]
[New Thread 0x7ffff5e77700 (LWP 17913)]
[New Thread 0x7ffff5e6b700 (LWP 17914)]
[New Thread 0x7ffff5e5f700 (LWP 17915)]
[New Thread 0x7ffff5e53700 (LWP 17916)]
[New Thread 0x7ffff5e47700 (LWP 17917)]
[New Thread 0x7ffff5e3b700 (LWP 17918)]
[New Thread 0x7ffff5e2f700 (LWP 17919)]
[New Thread 0x7ffff5e23700 (LWP 17920)]
[New Thread 0x7ffff5e17700 (LWP 17921)]
[New Thread 0x7ffff5e0b700 (LWP 17922)]
[New Thread 0x7ffff5dff700 (LWP 17923)]
[New Thread 0x7ffff5df3700 (LWP 17924)]
[New Thread 0x7ffff19e5700 (LWP 17925)]
[New Thread 0x7ffff19d9700 (LWP 17926)]
[New Thread 0x7ffff19cd700 (LWP 17927)]
[New Thread 0x7ffff19c1700 (LWP 17928)]
[New Thread 0x7ffff19b5700 (LWP 17929)]
[New Thread 0x7ffff19a9700 (LWP 17930)]
[New Thread 0x7ffff199d700 (LWP 17931)]
[New Thread 0x7ffff1991700 (LWP 17932)]
[New Thread 0x7ffff1985700 (LWP 17933)]
[New Thread 0x7ffff1979700 (LWP 17934)]
[New Thread 0x7ffff196d700 (LWP 17935)]
[New Thread 0x7ffff1961700 (LWP 17936)]
[New Thread 0x7ffff1955700 (LWP 17937)]
[New Thread 0x7ffff1949700 (LWP 17938)]
[New Thread 0x7ffff193d700 (LWP 17939)]
[New Thread 0x7ffff1931700 (LWP 17940)]
[New Thread 0x7ffff1925700 (LWP 17941)]
[New Thread 0x7ffff1919700 (LWP 17942)]
[New Thread 0x7ffff190d700 (LWP 17943)]
[New Thread 0x7ffff1901700 (LWP 17944)]
[New Thread 0x7ffff18f5700 (LWP 17945)]
[New Thread 0x7ffff18e9700 (LWP 17946)]
[New Thread 0x7ffff18dd700 (LWP 17947)]
[New Thread 0x7ffff18d1700 (LWP 17948)]
[New Thread 0x7ffff18c5700 (LWP 17949)]
[New Thread 0x7ffff18b9700 (LWP 17950)]
[New Thread 0x7ffff18ad700 (LWP 17951)]
[New Thread 0x7ffff18a1700 (LWP 17952)]
[New Thread 0x7ffff1895700 (LWP 17953)]
[New Thread 0x7ffff1889700 (LWP 17954)]
[New Thread 0x7ffff187d700 (LWP 17955)]
[New Thread 0x7ffff1871700 (LWP 17956)]
[New Thread 0x7ffff1865700 (LWP 17957)]
[New Thread 0x7ffff1859700 (LWP 17958)]
[New Thread 0x7ffff184d700 (LWP 17959)]
[New Thread 0x7ffff1841700 (LWP 17960)]
[New Thread 0x7ffff1835700 (LWP 17961)]
[New Thread 0x7ffff1829700 (LWP 17962)]
[New Thread 0x7ffff181d700 (LWP 17963)]
[New Thread 0x7ffff1811700 (LWP 17964)]
[New Thread 0x7ffff1805700 (LWP 17965)]
[New Thread 0x7ffff17f9700 (LWP 17966)]
[New Thread 0x7ffff17ed700 (LWP 17967)]
[New Thread 0x7ffff17e1700 (LWP 17968)]
[New Thread 0x7ffff17d5700 (LWP 17969)]
[New Thread 0x7ffff17c9700 (LWP 17970)]
[New Thread 0x7ffff17bd700 (LWP 17971)]
[New Thread 0x7ffff17b1700 (LWP 17972)]
[New Thread 0x7ffff17a5700 (LWP 17973)]
[New Thread 0x7ffff1799700 (LWP 17974)]
[New Thread 0x7ffff178d700 (LWP 17975)]
[New Thread 0x7ffff1781700 (LWP 17976)]
[New Thread 0x7ffff1775700 (LWP 17977)]
[New Thread 0x7ffff1769700 (LWP 17978)]
[New Thread 0x7ffff175d700 (LWP 17979)]
[New Thread 0x7ffff1751700 (LWP 17980)]
[New Thread 0x7ffff1745700 (LWP 17981)]
[New Thread 0x7ffff1739700 (LWP 17982)]
[New Thread 0x7ffff172d700 (LWP 17983)]
[New Thread 0x7ffff1721700 (LWP 17984)]
[New Thread 0x7ffff1715700 (LWP 17985)]
[New Thread 0x7ffff1709700 (LWP 17986)]
[New Thread 0x7ffff16fd700 (LWP 17987)]
[New Thread 0x7ffff16f1700 (LWP 17988)]
[New Thread 0x7ffff16e5700 (LWP 17989)]
[New Thread 0x7ffff16d9700 (LWP 17990)]
[New Thread 0x7ffff16cd700 (LWP 17991)]
[New Thread 0x7ffff16c1700 (LWP 17992)]
[New Thread 0x7ffff16b5700 (LWP 17993)]
[New Thread 0x7ffff16a9700 (LWP 17994)]
[New Thread 0x7ffff169d700 (LWP 17995)]
[New Thread 0x7ffff1691700 (LWP 17996)]
[New Thread 0x7ffff1685700 (LWP 17997)]
[New Thread 0x7ffff1679700 (LWP 17998)]
[New Thread 0x7ffff166d700 (LWP 17999)]
[New Thread 0x7ffff1661700 (LWP 18000)]
[New Thread 0x7ffff1655700 (LWP 18001)]
[New Thread 0x7ffff1649700 (LWP 18002)]
[New Thread 0x7ffff163d700 (LWP 18003)]
[New Thread 0x7ffff1631700 (LWP 18004)]
[New Thread 0x7ffff1625700 (LWP 18005)]
[New Thread 0x7ffff1619700 (LWP 18006)]
[New Thread 0x7ffff160d700 (LWP 18007)]
[New Thread 0x7ffff1601700 (LWP 18008)]
[New Thread 0x7ffff15f5700 (LWP 18009)]
[New Thread 0x7ffff15e9700 (LWP 18010)]
[New Thread 0x7ffff15dd700 (LWP 18011)]
[New Thread 0x7ffff15d1700 (LWP 18012)]
[New Thread 0x7ffff15c5700 (LWP 18013)]
[New Thread 0x7ffff15b9700 (LWP 18014)]
[New Thread 0x7ffff15ad700 (LWP 18015)]
[New Thread 0x7ffff15a1700 (LWP 18016)]
[New Thread 0x7ffff1595700 (LWP 18017)]
[New Thread 0x7ffff1589700 (LWP 18018)]
[New Thread 0x7ffff157d700 (LWP 18019)]
[New Thread 0x7ffff0c25700 (LWP 18020)]
[New Thread 0x7ffff0c19700 (LWP 18021)]
[New Thread 0x7ffff0c0d700 (LWP 18022)]
[New Thread 0x7ffff0c01700 (LWP 18023)]
[New Thread 0x7fffedd79700 (LWP 18024)]
[New Thread 0x7fffedd6d700 (LWP 18025)]
[New Thread 0x7fffedd61700 (LWP 18026)]
[New Thread 0x7fffedd55700 (LWP 18027)]
[New Thread 0x7fffedd49700 (LWP 18028)]
[New Thread 0x7fffedd3d700 (LWP 18029)]
[New Thread 0x7fffedd31700 (LWP 18030)]
[New Thread 0x7fffedd25700 (LWP 18031)]
[New Thread 0x7fffedd19700 (LWP 18032)]
[New Thread 0x7fffedd0d700 (LWP 18033)]
[New Thread 0x7fffedd01700 (LWP 18034)]
[Thread 0x7fffedd49700 (LWP 18028) exited]
[Thread 0x7fffedd01700 (LWP 18034) exited]
[Thread 0x7fffedd3d700 (LWP 18029) exited]
[Thread 0x7fffedd0d700 (LWP 18033) exited]
[Thread 0x7fffedd31700 (LWP 18030) exited]
[Thread 0x7fffedd19700 (LWP 18032) exited]
[Thread 0x7fffedd61700 (LWP 18026) exited]
[Thread 0x7fffedd25700 (LWP 18031) exited]
[Thread 0x7fffedd79700 (LWP 18024) exited]
[Thread 0x7fffedd55700 (LWP 18027) exited]
[Thread 0x7fffedd6d700 (LWP 18025) exited]
[New Thread 0x7fffedd6d700 (LWP 18035)]
[New Thread 0x7fffedd55700 (LWP 18036)]
[New Thread 0x7fffedcf5700 (LWP 18037)]
[Thread 0x7ffff1979700 (LWP 17934) exited]
[Thread 0x7fffedd55700 (LWP 18036) exited]
[Thread 0x7fffedcf5700 (LWP 18037) exited]
ztest: ../../lib/libzpool/kernel.c:301: Assertion `pthread_mutex_destroy(&(mp)->m_lock) == 0 (0x10 == 0x0)' failed.
[Thread 0x7ffff0c19700 (LWP 18021) exited]
[Thread 0x7ffff0c01700 (LWP 18023) exited]
[Thread 0x7ffff0c25700 (LWP 18020) exited]

Program received signal SIGABRT, Aborted.
[Switching to Thread 0x7ffff7faab80 (LWP 17860)]
0x00007ffff5f3bd67 in raise () from /usr/lib/libc.so.6
(gdb) thread apply all bt full

Thread 177 (Thread 0x7fffedd6d700 (LWP 18035)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x65b6c0, mp=mp@entry=0x65b630) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x65b630) at ../../lib/libzpool/taskq.c:232
        tq = 0x65b630
        t = 0x65b798
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x65b7d0) at ../../lib/libzpool/kernel.c:135
        kt = 0x65b7d0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 164 (Thread 0x7ffff0c0d700 (LWP 18022)):
#0  0x00007ffff62bc020 in __nptl_death_event () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff62bd2c7 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#2  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 161 (Thread 0x7ffff157d700 (LWP 18019)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64e5c0, mp=mp@entry=0x64e530) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64e530) at ../../lib/libzpool/taskq.c:232
        tq = 0x64e530
        t = 0x64e698
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64e6f0) at ../../lib/libzpool/kernel.c:135
        kt = 0x64e6f0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 160 (Thread 0x7ffff1589700 (LWP 18018)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64e270, mp=mp@entry=0x64e1e0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64e1e0) at ../../lib/libzpool/taskq.c:232
        tq = 0x64e1e0
        t = 0x64e348
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64e3a0) at ../../lib/libzpool/kernel.c:135
        kt = 0x64e3a0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 159 (Thread 0x7ffff1595700 (LWP 18017)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64df20, mp=mp@entry=0x64de90) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64de90) at ../../lib/libzpool/taskq.c:232
        tq = 0x64de90
        t = 0x64dff8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64e050) at ../../lib/libzpool/kernel.c:135
        kt = 0x64e050
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 158 (Thread 0x7ffff15a1700 (LWP 18016)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64dbd0, mp=mp@entry=0x64db40) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64db40) at ../../lib/libzpool/taskq.c:232
        tq = 0x64db40
        t = 0x64dca8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64dd00) at ../../lib/libzpool/kernel.c:135
        kt = 0x64dd00
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 157 (Thread 0x7ffff15ad700 (LWP 18015)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64d880, mp=mp@entry=0x64d7f0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64d7f0) at ../../lib/libzpool/taskq.c:232
        tq = 0x64d7f0
        t = 0x64d958
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64d9b0) at ../../lib/libzpool/kernel.c:135
        kt = 0x64d9b0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 156 (Thread 0x7ffff15b9700 (LWP 18014)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64d0d0, mp=mp@entry=0x64d040) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64d040) at ../../lib/libzpool/taskq.c:232
        tq = 0x64d040
        t = 0x64d1a8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64d660) at ../../lib/libzpool/kernel.c:135
        kt = 0x64d660
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 155 (Thread 0x7ffff15c5700 (LWP 18013)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64d0d0, mp=mp@entry=0x64d040) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64d040) at ../../lib/libzpool/taskq.c:232
        tq = 0x64d040
        t = 0x64d1a8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64d4f0) at ../../lib/libzpool/kernel.c:135
        kt = 0x64d4f0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 154 (Thread 0x7ffff15d1700 (LWP 18012)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64d0d0, mp=mp@entry=0x64d040) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64d040) at ../../lib/libzpool/taskq.c:232
        tq = 0x64d040
        t = 0x64d1a8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64d380) at ../../lib/libzpool/kernel.c:135
        kt = 0x64d380
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 153 (Thread 0x7ffff15dd700 (LWP 18011)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64d0d0, mp=mp@entry=0x64d040) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64d040) at ../../lib/libzpool/taskq.c:232
        tq = 0x64d040
        t = 0x64d1a8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64d210) at ../../lib/libzpool/kernel.c:135
        kt = 0x64d210
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 152 (Thread 0x7ffff15e9700 (LWP 18010)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64c940, mp=mp@entry=0x64c8b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64c8b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x64c8b0
        t = 0x64ca18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64ced0) at ../../lib/libzpool/kernel.c:135
        kt = 0x64ced0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 151 (Thread 0x7ffff15f5700 (LWP 18009)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64c940, mp=mp@entry=0x64c8b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64c8b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x64c8b0
        t = 0x64ca18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64cd60) at ../../lib/libzpool/kernel.c:135
        kt = 0x64cd60
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 150 (Thread 0x7ffff1601700 (LWP 18008)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64c940, mp=mp@entry=0x64c8b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64c8b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x64c8b0
        t = 0x64ca18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64cbf0) at ../../lib/libzpool/kernel.c:135
        kt = 0x64cbf0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 149 (Thread 0x7ffff160d700 (LWP 18007)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64c940, mp=mp@entry=0x64c8b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64c8b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x64c8b0
        t = 0x64ca18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64ca80) at ../../lib/libzpool/kernel.c:135
        kt = 0x64ca80
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 148 (Thread 0x7ffff1619700 (LWP 18006)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64c1b0, mp=mp@entry=0x64c120) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64c120) at ../../lib/libzpool/taskq.c:232
        tq = 0x64c120
        t = 0x64c288
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64c740) at ../../lib/libzpool/kernel.c:135
        kt = 0x64c740
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 147 (Thread 0x7ffff1625700 (LWP 18005)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64c1b0, mp=mp@entry=0x64c120) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64c120) at ../../lib/libzpool/taskq.c:232
        tq = 0x64c120
        t = 0x64c288
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64c5d0) at ../../lib/libzpool/kernel.c:135
        kt = 0x64c5d0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 146 (Thread 0x7ffff1631700 (LWP 18004)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64c1b0, mp=mp@entry=0x64c120) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64c120) at ../../lib/libzpool/taskq.c:232
        tq = 0x64c120
        t = 0x64c288
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64c460) at ../../lib/libzpool/kernel.c:135
        kt = 0x64c460
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 145 (Thread 0x7ffff163d700 (LWP 18003)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64c1b0, mp=mp@entry=0x64c120) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64c120) at ../../lib/libzpool/taskq.c:232
        tq = 0x64c120
        t = 0x64c288
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64c2f0) at ../../lib/libzpool/kernel.c:135
        kt = 0x64c2f0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 144 (Thread 0x7ffff1649700 (LWP 18002)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64ba20, mp=mp@entry=0x64b990) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64b990) at ../../lib/libzpool/taskq.c:232
        tq = 0x64b990
        t = 0x64baf8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64bfb0) at ../../lib/libzpool/kernel.c:135
        kt = 0x64bfb0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 143 (Thread 0x7ffff1655700 (LWP 18001)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64ba20, mp=mp@entry=0x64b990) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64b990) at ../../lib/libzpool/taskq.c:232
        tq = 0x64b990
        t = 0x64baf8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64be40) at ../../lib/libzpool/kernel.c:135
        kt = 0x64be40
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 142 (Thread 0x7ffff1661700 (LWP 18000)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64ba20, mp=mp@entry=0x64b990) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64b990) at ../../lib/libzpool/taskq.c:232
        tq = 0x64b990
        t = 0x64baf8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64bcd0) at ../../lib/libzpool/kernel.c:135
        kt = 0x64bcd0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 141 (Thread 0x7ffff166d700 (LWP 17999)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64ba20, mp=mp@entry=0x64b990) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64b990) at ../../lib/libzpool/taskq.c:232
        tq = 0x64b990
        t = 0x64baf8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64bb60) at ../../lib/libzpool/kernel.c:135
        kt = 0x64bb60
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 140 (Thread 0x7ffff1679700 (LWP 17998)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64b290, mp=mp@entry=0x64b200) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64b200) at ../../lib/libzpool/taskq.c:232
        tq = 0x64b200
        t = 0x64b368
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64b820) at ../../lib/libzpool/kernel.c:135
        kt = 0x64b820
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 139 (Thread 0x7ffff1685700 (LWP 17997)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64b290, mp=mp@entry=0x64b200) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64b200) at ../../lib/libzpool/taskq.c:232
        tq = 0x64b200
        t = 0x64b368
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64b6b0) at ../../lib/libzpool/kernel.c:135
        kt = 0x64b6b0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 138 (Thread 0x7ffff1691700 (LWP 17996)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64b290, mp=mp@entry=0x64b200) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64b200) at ../../lib/libzpool/taskq.c:232
        tq = 0x64b200
        t = 0x64b368
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64b540) at ../../lib/libzpool/kernel.c:135
        kt = 0x64b540
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 137 (Thread 0x7ffff169d700 (LWP 17995)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64b290, mp=mp@entry=0x64b200) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64b200) at ../../lib/libzpool/taskq.c:232
        tq = 0x64b200
        t = 0x64b368
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64b3d0) at ../../lib/libzpool/kernel.c:135
        kt = 0x64b3d0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 136 (Thread 0x7ffff16a9700 (LWP 17994)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64ab00, mp=mp@entry=0x64aa70) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64aa70) at ../../lib/libzpool/taskq.c:232
        tq = 0x64aa70
        t = 0x64abd8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64b090) at ../../lib/libzpool/kernel.c:135
        kt = 0x64b090
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 135 (Thread 0x7ffff16b5700 (LWP 17993)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64ab00, mp=mp@entry=0x64aa70) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64aa70) at ../../lib/libzpool/taskq.c:232
        tq = 0x64aa70
        t = 0x64abd8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64af20) at ../../lib/libzpool/kernel.c:135
        kt = 0x64af20
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 134 (Thread 0x7ffff16c1700 (LWP 17992)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64ab00, mp=mp@entry=0x64aa70) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64aa70) at ../../lib/libzpool/taskq.c:232
        tq = 0x64aa70
        t = 0x64abd8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64adb0) at ../../lib/libzpool/kernel.c:135
        kt = 0x64adb0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 133 (Thread 0x7ffff16cd700 (LWP 17991)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64ab00, mp=mp@entry=0x64aa70) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64aa70) at ../../lib/libzpool/taskq.c:232
        tq = 0x64aa70
        t = 0x64abd8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64ac40) at ../../lib/libzpool/kernel.c:135
        kt = 0x64ac40
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 132 (Thread 0x7ffff16d9700 (LWP 17990)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64a370, mp=mp@entry=0x64a2e0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64a2e0) at ../../lib/libzpool/taskq.c:232
        tq = 0x64a2e0
        t = 0x64a448
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64a900) at ../../lib/libzpool/kernel.c:135
        kt = 0x64a900
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 131 (Thread 0x7ffff16e5700 (LWP 17989)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64a370, mp=mp@entry=0x64a2e0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64a2e0) at ../../lib/libzpool/taskq.c:232
        tq = 0x64a2e0
        t = 0x64a448
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64a790) at ../../lib/libzpool/kernel.c:135
        kt = 0x64a790
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 130 (Thread 0x7ffff16f1700 (LWP 17988)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64a370, mp=mp@entry=0x64a2e0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64a2e0) at ../../lib/libzpool/taskq.c:232
        tq = 0x64a2e0
        t = 0x64a448
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64a620) at ../../lib/libzpool/kernel.c:135
        kt = 0x64a620
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 129 (Thread 0x7ffff16fd700 (LWP 17987)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x64a370, mp=mp@entry=0x64a2e0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x64a2e0) at ../../lib/libzpool/taskq.c:232
        tq = 0x64a2e0
        t = 0x64a448
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64a4b0) at ../../lib/libzpool/kernel.c:135
        kt = 0x64a4b0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 128 (Thread 0x7ffff1709700 (LWP 17986)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x649be0, mp=mp@entry=0x649b50) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x649b50) at ../../lib/libzpool/taskq.c:232
        tq = 0x649b50
        t = 0x649cb8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64a170) at ../../lib/libzpool/kernel.c:135
        kt = 0x64a170
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 127 (Thread 0x7ffff1715700 (LWP 17985)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x649be0, mp=mp@entry=0x649b50) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x649b50) at ../../lib/libzpool/taskq.c:232
        tq = 0x649b50
        t = 0x649cb8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x64a000) at ../../lib/libzpool/kernel.c:135
        kt = 0x64a000
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 126 (Thread 0x7ffff1721700 (LWP 17984)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x649be0, mp=mp@entry=0x649b50) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x649b50) at ../../lib/libzpool/taskq.c:232
        tq = 0x649b50
        t = 0x649cb8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x649e90) at ../../lib/libzpool/kernel.c:135
        kt = 0x649e90
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 125 (Thread 0x7ffff172d700 (LWP 17983)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x649be0, mp=mp@entry=0x649b50) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x649b50) at ../../lib/libzpool/taskq.c:232
        tq = 0x649b50
        t = 0x649cb8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x649d20) at ../../lib/libzpool/kernel.c:135
        kt = 0x649d20
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 124 (Thread 0x7ffff1739700 (LWP 17982)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x649290, mp=mp@entry=0x649200) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x649200) at ../../lib/libzpool/taskq.c:232
        tq = 0x649200
        t = 0x649368
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x649990) at ../../lib/libzpool/kernel.c:135
        kt = 0x649990
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 123 (Thread 0x7ffff1745700 (LWP 17981)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x649290, mp=mp@entry=0x649200) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x649200) at ../../lib/libzpool/taskq.c:232
        tq = 0x649200
        t = 0x649368
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x649820) at ../../lib/libzpool/kernel.c:135
        kt = 0x649820
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 122 (Thread 0x7ffff1751700 (LWP 17980)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x649290, mp=mp@entry=0x649200) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x649200) at ../../lib/libzpool/taskq.c:232
        tq = 0x649200
        t = 0x649368
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6496b0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6496b0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 121 (Thread 0x7ffff175d700 (LWP 17979)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x649290, mp=mp@entry=0x649200) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x649200) at ../../lib/libzpool/taskq.c:232
        tq = 0x649200
        t = 0x649368
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x649540) at ../../lib/libzpool/kernel.c:135
        kt = 0x649540
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 120 (Thread 0x7ffff1769700 (LWP 17978)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x649290, mp=mp@entry=0x649200) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x649200) at ../../lib/libzpool/taskq.c:232
        tq = 0x649200
        t = 0x649368
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6493d0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6493d0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 119 (Thread 0x7ffff1775700 (LWP 17977)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647940, mp=mp@entry=0x6478b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6478b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6478b0
        t = 0x647a18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x649070) at ../../lib/libzpool/kernel.c:135
        kt = 0x649070
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 118 (Thread 0x7ffff1781700 (LWP 17976)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647940, mp=mp@entry=0x6478b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6478b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6478b0
        t = 0x647a18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x648f00) at ../../lib/libzpool/kernel.c:135
        kt = 0x648f00
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 117 (Thread 0x7ffff178d700 (LWP 17975)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647940, mp=mp@entry=0x6478b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6478b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6478b0
        t = 0x647a18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x648d90) at ../../lib/libzpool/kernel.c:135
        kt = 0x648d90
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 116 (Thread 0x7ffff1799700 (LWP 17974)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647940, mp=mp@entry=0x6478b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6478b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6478b0
        t = 0x647a18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x648c20) at ../../lib/libzpool/kernel.c:135
        kt = 0x648c20
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 115 (Thread 0x7ffff17a5700 (LWP 17973)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647940, mp=mp@entry=0x6478b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6478b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6478b0
        t = 0x647a18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x648ab0) at ../../lib/libzpool/kernel.c:135
        kt = 0x648ab0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 114 (Thread 0x7ffff17b1700 (LWP 17972)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647940, mp=mp@entry=0x6478b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6478b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6478b0
        t = 0x647a18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x648940) at ../../lib/libzpool/kernel.c:135
        kt = 0x648940
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 113 (Thread 0x7ffff17bd700 (LWP 17971)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647940, mp=mp@entry=0x6478b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6478b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6478b0
        t = 0x647a18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6487d0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6487d0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 112 (Thread 0x7ffff17c9700 (LWP 17970)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647940, mp=mp@entry=0x6478b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6478b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6478b0
        t = 0x647a18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x648660) at ../../lib/libzpool/kernel.c:135
        kt = 0x648660
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 111 (Thread 0x7ffff17d5700 (LWP 17969)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647940, mp=mp@entry=0x6478b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6478b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6478b0
        t = 0x647a18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6484f0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6484f0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 110 (Thread 0x7ffff17e1700 (LWP 17968)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647940, mp=mp@entry=0x6478b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6478b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6478b0
        t = 0x647a18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x648380) at ../../lib/libzpool/kernel.c:135
        kt = 0x648380
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 109 (Thread 0x7ffff17ed700 (LWP 17967)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647940, mp=mp@entry=0x6478b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6478b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6478b0
        t = 0x647a18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x648210) at ../../lib/libzpool/kernel.c:135
        kt = 0x648210
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 108 (Thread 0x7ffff17f9700 (LWP 17966)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647940, mp=mp@entry=0x6478b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6478b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6478b0
        t = 0x647a18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6480a0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6480a0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 107 (Thread 0x7ffff1805700 (LWP 17965)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647940, mp=mp@entry=0x6478b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6478b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6478b0
        t = 0x647a18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x647f30) at ../../lib/libzpool/kernel.c:135
        kt = 0x647f30
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 106 (Thread 0x7ffff1811700 (LWP 17964)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647940, mp=mp@entry=0x6478b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6478b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6478b0
        t = 0x647a18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x647dc0) at ../../lib/libzpool/kernel.c:135
        kt = 0x647dc0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 105 (Thread 0x7ffff181d700 (LWP 17963)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647940, mp=mp@entry=0x6478b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6478b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6478b0
        t = 0x647a18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x647c50) at ../../lib/libzpool/kernel.c:135
        kt = 0x647c50
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 104 (Thread 0x7ffff1829700 (LWP 17962)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647940, mp=mp@entry=0x6478b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6478b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6478b0
        t = 0x647a18
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x647ae0) at ../../lib/libzpool/kernel.c:135
        kt = 0x647ae0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 103 (Thread 0x7ffff1835700 (LWP 17961)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647020, mp=mp@entry=0x646f90) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x646f90) at ../../lib/libzpool/taskq.c:232
        tq = 0x646f90
        t = 0x6470f8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x647720) at ../../lib/libzpool/kernel.c:135
        kt = 0x647720
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 102 (Thread 0x7ffff1841700 (LWP 17960)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647020, mp=mp@entry=0x646f90) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x646f90) at ../../lib/libzpool/taskq.c:232
        tq = 0x646f90
        t = 0x6470f8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6475b0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6475b0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 101 (Thread 0x7ffff184d700 (LWP 17959)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647020, mp=mp@entry=0x646f90) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x646f90) at ../../lib/libzpool/taskq.c:232
        tq = 0x646f90
        t = 0x6470f8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x647440) at ../../lib/libzpool/kernel.c:135
        kt = 0x647440
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 100 (Thread 0x7ffff1859700 (LWP 17958)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647020, mp=mp@entry=0x646f90) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x646f90) at ../../lib/libzpool/taskq.c:232
        tq = 0x646f90
        t = 0x6470f8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6472d0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6472d0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 99 (Thread 0x7ffff1865700 (LWP 17957)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x647020, mp=mp@entry=0x646f90) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x646f90) at ../../lib/libzpool/taskq.c:232
        tq = 0x646f90
        t = 0x6470f8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x647160) at ../../lib/libzpool/kernel.c:135
        kt = 0x647160
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 98 (Thread 0x7ffff1871700 (LWP 17956)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x646580, mp=mp@entry=0x6464f0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6464f0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6464f0
        t = 0x646658
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x646e00) at ../../lib/libzpool/kernel.c:135
        kt = 0x646e00
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 97 (Thread 0x7ffff187d700 (LWP 17955)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x646580, mp=mp@entry=0x6464f0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6464f0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6464f0
        t = 0x646658
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x646c90) at ../../lib/libzpool/kernel.c:135
        kt = 0x646c90
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 96 (Thread 0x7ffff1889700 (LWP 17954)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x646580, mp=mp@entry=0x6464f0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6464f0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6464f0
        t = 0x646658
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x646b20) at ../../lib/libzpool/kernel.c:135
        kt = 0x646b20
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 95 (Thread 0x7ffff1895700 (LWP 17953)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x646580, mp=mp@entry=0x6464f0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6464f0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6464f0
        t = 0x646658
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6469b0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6469b0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 94 (Thread 0x7ffff18a1700 (LWP 17952)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x646580, mp=mp@entry=0x6464f0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6464f0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6464f0
        t = 0x646658
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x646840) at ../../lib/libzpool/kernel.c:135
        kt = 0x646840
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 93 (Thread 0x7ffff18ad700 (LWP 17951)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x646580, mp=mp@entry=0x6464f0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6464f0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6464f0
        t = 0x646658
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6466d0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6466d0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 92 (Thread 0x7ffff18b9700 (LWP 17950)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x645ba0, mp=mp@entry=0x645b10) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x645b10) at ../../lib/libzpool/taskq.c:232
        tq = 0x645b10
        t = 0x645c78
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x646360) at ../../lib/libzpool/kernel.c:135
        kt = 0x646360
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 91 (Thread 0x7ffff18c5700 (LWP 17949)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x645ba0, mp=mp@entry=0x645b10) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x645b10) at ../../lib/libzpool/taskq.c:232
        tq = 0x645b10
        t = 0x645c78
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6461f0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6461f0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 90 (Thread 0x7ffff18d1700 (LWP 17948)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x645ba0, mp=mp@entry=0x645b10) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x645b10) at ../../lib/libzpool/taskq.c:232
        tq = 0x645b10
        t = 0x645c78
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x641ac0) at ../../lib/libzpool/kernel.c:135
        kt = 0x641ac0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 89 (Thread 0x7ffff18dd700 (LWP 17947)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x645ba0, mp=mp@entry=0x645b10) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x645b10) at ../../lib/libzpool/taskq.c:232
        tq = 0x645b10
        t = 0x645c78
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x641aa0) at ../../lib/libzpool/kernel.c:135
        kt = 0x641aa0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 88 (Thread 0x7ffff18e9700 (LWP 17946)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x645ba0, mp=mp@entry=0x645b10) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x645b10) at ../../lib/libzpool/taskq.c:232
        tq = 0x645b10
        t = 0x645c78
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x641a80) at ../../lib/libzpool/kernel.c:135
        kt = 0x641a80
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 87 (Thread 0x7ffff18f5700 (LWP 17945)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x645ba0, mp=mp@entry=0x645b10) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x645b10) at ../../lib/libzpool/taskq.c:232
        tq = 0x645b10
        t = 0x645c78
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x641a60) at ../../lib/libzpool/kernel.c:135
        kt = 0x641a60
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 86 (Thread 0x7ffff1901700 (LWP 17944)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x644f80, mp=mp@entry=0x644ef0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x644ef0) at ../../lib/libzpool/taskq.c:232
        tq = 0x644ef0
        t = 0x645058
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x642870) at ../../lib/libzpool/kernel.c:135
        kt = 0x642870
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 85 (Thread 0x7ffff190d700 (LWP 17943)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x644f80, mp=mp@entry=0x644ef0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x644ef0) at ../../lib/libzpool/taskq.c:232
        tq = 0x644ef0
        t = 0x645058
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x642850) at ../../lib/libzpool/kernel.c:135
        kt = 0x642850
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 84 (Thread 0x7ffff1919700 (LWP 17942)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x644f80, mp=mp@entry=0x644ef0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x644ef0) at ../../lib/libzpool/taskq.c:232
        tq = 0x644ef0
        t = 0x645058
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x642830) at ../../lib/libzpool/kernel.c:135
        kt = 0x642830
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 83 (Thread 0x7ffff1925700 (LWP 17941)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x644f80, mp=mp@entry=0x644ef0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x644ef0) at ../../lib/libzpool/taskq.c:232
        tq = 0x644ef0
        t = 0x645058
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x642810) at ../../lib/libzpool/kernel.c:135
        kt = 0x642810
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 82 (Thread 0x7ffff1931700 (LWP 17940)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x644f80, mp=mp@entry=0x644ef0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x644ef0) at ../../lib/libzpool/taskq.c:232
        tq = 0x644ef0
        t = 0x645058
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6427f0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6427f0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 81 (Thread 0x7ffff193d700 (LWP 17939)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x644f80, mp=mp@entry=0x644ef0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x644ef0) at ../../lib/libzpool/taskq.c:232
        tq = 0x644ef0
        t = 0x645058
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6427d0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6427d0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 80 (Thread 0x7ffff1949700 (LWP 17938)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x644f80, mp=mp@entry=0x644ef0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x644ef0) at ../../lib/libzpool/taskq.c:232
        tq = 0x644ef0
        t = 0x645058
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x642cf0) at ../../lib/libzpool/kernel.c:135
        kt = 0x642cf0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 79 (Thread 0x7ffff1955700 (LWP 17937)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x644f80, mp=mp@entry=0x644ef0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x644ef0) at ../../lib/libzpool/taskq.c:232
        tq = 0x644ef0
        t = 0x645058
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x642cd0) at ../../lib/libzpool/kernel.c:135
        kt = 0x642cd0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 78 (Thread 0x7ffff1961700 (LWP 17936)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x641740, mp=mp@entry=0x6416b0) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x6416b0) at ../../lib/libzpool/taskq.c:232
        tq = 0x6416b0
        t = 0x641818
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x641870) at ../../lib/libzpool/kernel.c:135
        kt = 0x641870
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 77 (Thread 0x7ffff196d700 (LWP 17935)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x6429c0, mp=mp@entry=0x642930) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x642930) at ../../lib/libzpool/taskq.c:232
        tq = 0x642930
        t = 0x642a98
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x642af0) at ../../lib/libzpool/kernel.c:135
        kt = 0x642af0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 75 (Thread 0x7ffff1985700 (LWP 17933)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x63fc10, mp=mp@entry=0x63fb80) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x63fb80) at ../../lib/libzpool/taskq.c:232
        tq = 0x63fb80
        t = 0x63fce8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x641380) at ../../lib/libzpool/kernel.c:135
        kt = 0x641380
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 74 (Thread 0x7ffff1991700 (LWP 17932)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x63fc10, mp=mp@entry=0x63fb80) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x63fb80) at ../../lib/libzpool/taskq.c:232
        tq = 0x63fb80
        t = 0x63fce8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x641210) at ../../lib/libzpool/kernel.c:135
        kt = 0x641210
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 73 (Thread 0x7ffff199d700 (LWP 17931)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x63fc10, mp=mp@entry=0x63fb80) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x63fb80) at ../../lib/libzpool/taskq.c:232
        tq = 0x63fb80
        t = 0x63fce8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6410a0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6410a0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 72 (Thread 0x7ffff19a9700 (LWP 17930)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x63fc10, mp=mp@entry=0x63fb80) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x63fb80) at ../../lib/libzpool/taskq.c:232
        tq = 0x63fb80
        t = 0x63fce8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x640f30) at ../../lib/libzpool/kernel.c:135
        kt = 0x640f30
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 71 (Thread 0x7ffff19b5700 (LWP 17929)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x63fc10, mp=mp@entry=0x63fb80) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x63fb80) at ../../lib/libzpool/taskq.c:232
        tq = 0x63fb80
        t = 0x63fce8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x640dc0) at ../../lib/libzpool/kernel.c:135
        kt = 0x640dc0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 70 (Thread 0x7ffff19c1700 (LWP 17928)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x63fc10, mp=mp@entry=0x63fb80) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x63fb80) at ../../lib/libzpool/taskq.c:232
        tq = 0x63fb80
        t = 0x63fce8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x640c50) at ../../lib/libzpool/kernel.c:135
        kt = 0x640c50
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 69 (Thread 0x7ffff19cd700 (LWP 17927)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x63fc10, mp=mp@entry=0x63fb80) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x63fb80) at ../../lib/libzpool/taskq.c:232
        tq = 0x63fb80
        t = 0x63fce8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x640ae0) at ../../lib/libzpool/kernel.c:135
        kt = 0x640ae0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 68 (Thread 0x7ffff19d9700 (LWP 17926)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x63fc10, mp=mp@entry=0x63fb80) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x63fb80) at ../../lib/libzpool/taskq.c:232
        tq = 0x63fb80
        t = 0x63fce8
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x640970) at ../../lib/libzpool/kernel.c:135
        kt = 0x640970
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 67 (Thread 0x7ffff19e5700 (LWP 17925)):
#0  0x00007ffff62c1ed8 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a9488 in cv_timedwait (cv=cv@entry=0x7ffff79acec0 <arc_reclaim_thr_cv>, mp=mp@entry=0x7ffff79acf00 <arc_reclaim_thr_lock>, abstime=202076) at ../../lib/libzpool/kernel.c:517
        error = <optimized out>
        tv = {tv_sec = 1406539660, tv_usec = 28651}
        ts = {tv_sec = 1406539661, tv_nsec = 28651000}
        delta = 119
#2  0x00007ffff76b3455 in arc_adapt_thread () at ../../module/zfs/arc.c:2496
        last_reclaim = <optimized out>
        cpr = {cc_lockp = 0x7ffff79acf00 <arc_reclaim_thr_lock>}
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63f9a0) at ../../lib/libzpool/kernel.c:135
        kt = 0x63f9a0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 66 (Thread 0x7ffff5df3700 (LWP 17924)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63cab0) at ../../lib/libzpool/kernel.c:135
        kt = 0x63cab0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 65 (Thread 0x7ffff5dff700 (LWP 17923)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63c940) at ../../lib/libzpool/kernel.c:135
        kt = 0x63c940
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 64 (Thread 0x7ffff5e0b700 (LWP 17922)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63c7d0) at ../../lib/libzpool/kernel.c:135
        kt = 0x63c7d0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 63 (Thread 0x7ffff5e17700 (LWP 17921)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63c660) at ../../lib/libzpool/kernel.c:135
        kt = 0x63c660
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 62 (Thread 0x7ffff5e23700 (LWP 17920)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63c4f0) at ../../lib/libzpool/kernel.c:135
        kt = 0x63c4f0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 61 (Thread 0x7ffff5e2f700 (LWP 17919)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63c380) at ../../lib/libzpool/kernel.c:135
        kt = 0x63c380
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 60 (Thread 0x7ffff5e3b700 (LWP 17918)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63c210) at ../../lib/libzpool/kernel.c:135
        kt = 0x63c210
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 59 (Thread 0x7ffff5e47700 (LWP 17917)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63c0a0) at ../../lib/libzpool/kernel.c:135
        kt = 0x63c0a0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 58 (Thread 0x7ffff5e53700 (LWP 17916)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63bf30) at ../../lib/libzpool/kernel.c:135
        kt = 0x63bf30
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 57 (Thread 0x7ffff5e5f700 (LWP 17915)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63bdc0) at ../../lib/libzpool/kernel.c:135
        kt = 0x63bdc0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 56 (Thread 0x7ffff5e6b700 (LWP 17914)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63bc50) at ../../lib/libzpool/kernel.c:135
        kt = 0x63bc50
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 55 (Thread 0x7ffff5e77700 (LWP 17913)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63bae0) at ../../lib/libzpool/kernel.c:135
        kt = 0x63bae0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 54 (Thread 0x7ffff5e83700 (LWP 17912)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63b970) at ../../lib/libzpool/kernel.c:135
        kt = 0x63b970
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 53 (Thread 0x7ffff5e8f700 (LWP 17911)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63b800) at ../../lib/libzpool/kernel.c:135
        kt = 0x63b800
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 52 (Thread 0x7ffff5e9b700 (LWP 17910)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63b690) at ../../lib/libzpool/kernel.c:135
        kt = 0x63b690
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 51 (Thread 0x7ffff5ea7700 (LWP 17909)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63b520) at ../../lib/libzpool/kernel.c:135
        kt = 0x63b520
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 50 (Thread 0x7ffff5eb3700 (LWP 17908)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63b3b0) at ../../lib/libzpool/kernel.c:135
        kt = 0x63b3b0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 49 (Thread 0x7ffff5ebf700 (LWP 17907)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63b240) at ../../lib/libzpool/kernel.c:135
        kt = 0x63b240
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 48 (Thread 0x7ffff5ecb700 (LWP 17906)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63b0d0) at ../../lib/libzpool/kernel.c:135
        kt = 0x63b0d0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 47 (Thread 0x7ffff5ed7700 (LWP 17905)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63af60) at ../../lib/libzpool/kernel.c:135
        kt = 0x63af60
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 46 (Thread 0x7ffff5ee3700 (LWP 17904)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63adf0) at ../../lib/libzpool/kernel.c:135
        kt = 0x63adf0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 45 (Thread 0x7ffff5eef700 (LWP 17903)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63ac80) at ../../lib/libzpool/kernel.c:135
        kt = 0x63ac80
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 44 (Thread 0x7ffff5efb700 (LWP 17902)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63ab10) at ../../lib/libzpool/kernel.c:135
        kt = 0x63ab10
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 43 (Thread 0x7ffff5f07700 (LWP 17901)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63a9a0) at ../../lib/libzpool/kernel.c:135
        kt = 0x63a9a0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 42 (Thread 0x7ffff7e11700 (LWP 17900)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63a830) at ../../lib/libzpool/kernel.c:135
        kt = 0x63a830
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 41 (Thread 0x7ffff7e1d700 (LWP 17899)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63a6c0) at ../../lib/libzpool/kernel.c:135
        kt = 0x63a6c0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 40 (Thread 0x7ffff7e29700 (LWP 17898)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63a550) at ../../lib/libzpool/kernel.c:135
        kt = 0x63a550
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 39 (Thread 0x7ffff7e35700 (LWP 17897)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63a3e0) at ../../lib/libzpool/kernel.c:135
        kt = 0x63a3e0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 38 (Thread 0x7ffff7e41700 (LWP 17896)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63a270) at ../../lib/libzpool/kernel.c:135
        kt = 0x63a270
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 37 (Thread 0x7ffff7e4d700 (LWP 17895)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x63a100) at ../../lib/libzpool/kernel.c:135
        kt = 0x63a100
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 36 (Thread 0x7ffff7e59700 (LWP 17894)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x639f90) at ../../lib/libzpool/kernel.c:135
        kt = 0x639f90
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 35 (Thread 0x7ffff7e65700 (LWP 17893)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x639e20) at ../../lib/libzpool/kernel.c:135
        kt = 0x639e20
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 34 (Thread 0x7ffff7e71700 (LWP 17892)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x639cb0) at ../../lib/libzpool/kernel.c:135
        kt = 0x639cb0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 33 (Thread 0x7ffff7e7d700 (LWP 17891)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x639b40) at ../../lib/libzpool/kernel.c:135
        kt = 0x639b40
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 32 (Thread 0x7ffff7e89700 (LWP 17890)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6399d0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6399d0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 31 (Thread 0x7ffff7e95700 (LWP 17889)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x639860) at ../../lib/libzpool/kernel.c:135
        kt = 0x639860
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 30 (Thread 0x7ffff7ea1700 (LWP 17888)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6396f0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6396f0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 29 (Thread 0x7ffff7ead700 (LWP 17887)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x639580) at ../../lib/libzpool/kernel.c:135
        kt = 0x639580
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 28 (Thread 0x7ffff7eb9700 (LWP 17886)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x639410) at ../../lib/libzpool/kernel.c:135
        kt = 0x639410
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 27 (Thread 0x7ffff7ec5700 (LWP 17885)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6392a0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6392a0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 26 (Thread 0x7ffff7ed1700 (LWP 17884)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x639130) at ../../lib/libzpool/kernel.c:135
        kt = 0x639130
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 25 (Thread 0x7ffff7edd700 (LWP 17883)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x638fc0) at ../../lib/libzpool/kernel.c:135
        kt = 0x638fc0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 24 (Thread 0x7ffff7ee9700 (LWP 17882)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x638e50) at ../../lib/libzpool/kernel.c:135
        kt = 0x638e50
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 23 (Thread 0x7ffff7ef5700 (LWP 17881)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x638ce0) at ../../lib/libzpool/kernel.c:135
        kt = 0x638ce0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 22 (Thread 0x7ffff7f01700 (LWP 17880)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x638b70) at ../../lib/libzpool/kernel.c:135
        kt = 0x638b70
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 21 (Thread 0x7ffff7f0d700 (LWP 17879)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x638a00) at ../../lib/libzpool/kernel.c:135
        kt = 0x638a00
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 20 (Thread 0x7ffff7f19700 (LWP 17878)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x638890) at ../../lib/libzpool/kernel.c:135
        kt = 0x638890
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 19 (Thread 0x7ffff7f25700 (LWP 17877)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x638720) at ../../lib/libzpool/kernel.c:135
        kt = 0x638720
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 18 (Thread 0x7ffff7f31700 (LWP 17876)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6385b0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6385b0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 17 (Thread 0x7ffff7f3d700 (LWP 17875)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x638440) at ../../lib/libzpool/kernel.c:135
        kt = 0x638440
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 16 (Thread 0x7ffff7f49700 (LWP 17874)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6382d0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6382d0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 15 (Thread 0x7ffff7f55700 (LWP 17873)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x638160) at ../../lib/libzpool/kernel.c:135
        kt = 0x638160
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 14 (Thread 0x7ffff7f61700 (LWP 17872)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x637ff0) at ../../lib/libzpool/kernel.c:135
        kt = 0x637ff0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 13 (Thread 0x7ffff7f6d700 (LWP 17871)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x637e80) at ../../lib/libzpool/kernel.c:135
        kt = 0x637e80
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 12 (Thread 0x7ffff7f79700 (LWP 17870)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x637d10) at ../../lib/libzpool/kernel.c:135
        kt = 0x637d10
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 11 (Thread 0x7ffff7f85700 (LWP 17869)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x637ba0) at ../../lib/libzpool/kernel.c:135
        kt = 0x637ba0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 10 (Thread 0x7ffff7f91700 (LWP 17868)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x637a30) at ../../lib/libzpool/kernel.c:135
        kt = 0x637a30
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 9 (Thread 0x7ffff7f9d700 (LWP 17867)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6378c0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6378c0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 8 (Thread 0x7ffff7fa9700 (LWP 17866)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x637750) at ../../lib/libzpool/kernel.c:135
        kt = 0x637750
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 7 (Thread 0x7ffff7fc8700 (LWP 17865)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x6375e0) at ../../lib/libzpool/kernel.c:135
        kt = 0x6375e0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 6 (Thread 0x7ffff7fd4700 (LWP 17864)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x637470) at ../../lib/libzpool/kernel.c:135
        kt = 0x637470
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 5 (Thread 0x7ffff7fe0700 (LWP 17863)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x637300) at ../../lib/libzpool/kernel.c:135
        kt = 0x637300
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 4 (Thread 0x7ffff7fec700 (LWP 17862)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x637190) at ../../lib/libzpool/kernel.c:135
        kt = 0x637190
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 3 (Thread 0x7ffff7ff8700 (LWP 17861)):
#0  0x00007ffff62c1b2f in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib/libpthread.so.0
No symbol table info available.
#1  0x00007ffff76a933e in cv_wait (cv=cv@entry=0x636c90, mp=mp@entry=0x636c00) at ../../lib/libzpool/kernel.c:485
        ret = <optimized out>
#2  0x00007ffff76aaaf0 in taskq_thread (arg=0x636c00) at ../../lib/libzpool/taskq.c:232
        tq = 0x636c00
        t = 0x636d68
        prealloc = <optimized out>
#3  0x00007ffff76a8195 in zk_thread_helper (arg=0x61a0c0) at ../../lib/libzpool/kernel.c:135
        kt = 0x61a0c0
#4  0x00007ffff62bd124 in start_thread () from /usr/lib/libpthread.so.0
No symbol table info available.
#5  0x00007ffff5ff14bd in clone () from /usr/lib/libc.so.6
No symbol table info available.

Thread 2 (Thread 0x7ffff7faab80 (LWP 17860)):
#0  0x00007ffff5f3bd67 in raise () from /usr/lib/libc.so.6
No symbol table info available.
#1  0x00007ffff5f3d118 in abort () from /usr/lib/libc.so.6
No symbol table info available.
#2  0x00007ffff5f34bdd in __assert_fail_base () from /usr/lib/libc.so.6
No symbol table info available.
#3  0x00007ffff5f34c92 in __assert_fail () from /usr/lib/libc.so.6
No symbol table info available.
#4  0x00007ffff5f34d0b in __assert () from /usr/lib/libc.so.6
No symbol table info available.
#5  0x00007ffff76a8c67 in mutex_destroy (mp=0x7fffe8023f00) at ../../lib/libzpool/kernel.c:301
        __buf = 0x7fffffffc650 "pthread_mutex_destroy(&(mp)->m_lock) == 0 (0x10 == 0x0)"
        __left = <optimized out>
#6  0x00007ffff76b16fd in buf_dest (vbuf=<optimized out>, unused=<optimized out>) at ../../module/zfs/arc.c:989
        buf = <optimized out>
#7  0x00007ffff76af8df in umem_cache_free (cp=<optimized out>, cp=<optimized out>, ptr=0x7fffe8023ef0) at ../../lib/libspl/include/umem.h:191
No locals.
#8  arc_buf_destroy (buf=0x7fffe8023ef0, recycle=<optimized out>, all=B_TRUE) at ../../module/zfs/arc.c:1667
        bufp = <optimized out>
#9  0x00007ffff76afd1d in arc_evict (state=0x7ffff79acd40 <ARC_mru>, spa=spa@entry=7922689940899460897, bytes=bytes@entry=-1, recycle=recycle@entry=B_FALSE, type=type@entry=ARC_BUFC_METADATA) at ../../module/zfs/arc.c:1983
        buf = 0x7fffe8023ef0
        evicted_state = 0x7ffff79acc80 <ARC_mru_ghost>
        bytes_evicted = 18432
        skipped = 0
        missed = 0
        ab = 0x7fffe8023d30
        ab_prev = 0x73ca80
        list = 0x7ffff79acd60 <ARC_mru+32>
        hash_lock = 0x7ffff79aadb8 <buf_hash_table+7800>
        stolen = 0x0
        marker = {b_dva = {dva_word = {0, 0}}, b_birth = 0, b_cksum0 = 0, b_freeze_lock = {m_owner = 0x0, m_magic = 0, m_lock = {__data = {__lock = 0, __count = 0, __owner = 0, __nusers = 0, __kind = 0, __spins = 0, __elision = 0, __list = {__prev = 0x0, __next = 0x0}}, __size = '\000' <repeats 39 times>, __align = 0}}, b_freeze_cksum = 0x0, b_hash_next = 0x0, b_buf = 0x0, b_flags = 0, b_datacnt = 0, b_acb = 0x0, b_cv = {cv_magic = 0, cv = {__data = {__lock = 0, __futex = 0, __total_seq = 0, __wakeup_seq = 0, __woken_seq = 0, __mutex = 0x0, __nwaiters = 0, __broadcast_seq = 0}, __size = '\000' <repeats 47 times>, __align = 0}}, b_type = ARC_BUFC_DATA, b_size = 0, b_spa = 0, b_state = 0x0, b_arc_node = {list_next = 0x0, list_prev = 0x0}, b_arc_access = 0, b_mru_hits = 0, b_mru_ghost_hits = 0, b_mfu_hits = 0, b_mfu_ghost_hits = 0, b_l2_hits = 0, b_refcnt = {rc_mtx = {m_owner = 0x0, m_magic = 0, m_lock = {__data = {__lock = 0, __count = 0, __owner = 0, __nusers = 0, __kind = 0, __spins = 0, __elision = 0, __list = {__prev = 0x0, __next = 0x0}}, __size = '\000' <repeats 39 times>, __align = 0}}, rc_tracked = B_FALSE, rc_list = {list_size = 0, list_offset = 0, list_head = {list_next = 0x0, list_prev = 0x0}}, rc_removed = {list_size = 0, list_offset = 0, list_head = {list_next = 0x0, list_prev = 0x0}}, rc_count = 0, rc_removed_count = 0}, b_l2hdr = 0x0, b_l2node = {list_next = 0x0, list_prev = 0x0}}
        count = 2
        __func__ = "arc_evict"
#10 0x00007ffff76b30b6 in arc_flush (spa=0x643030) at ../../module/zfs/arc.c:2353
        guid = 7922689940899460897
#11 0x00007ffff76de65a in dsl_pool_close (dp=0x733fa0) at ../../module/zfs/dsl_pool.c:309
No locals.
#12 0x00007ffff76f7dcc in spa_unload (spa=spa@entry=0x643030) at ../../module/zfs/spa.c:1275
        i = <optimized out>
        __func__ = "spa_unload"
#13 0x00007ffff76f9187 in spa_evict_all () at ../../module/zfs/spa.c:6415
        spa = 0x643030
        __func__ = "spa_evict_all"
#14 0x00007ffff7703bbe in spa_fini () at ../../module/zfs/spa_misc.c:1679
No locals.
#15 0x00007ffff76aa569 in kernel_fini () at ../../lib/libzpool/kernel.c:1144
No locals.
#16 0x00000000004064e7 in ztest_init (zs=zs@entry=0x7ffff7ff9498) at ../../cmd/ztest/ztest.c:6046
        spa = 0x643030
        nvroot = 0x641660
        i = <optimized out>
        __func__ = "ztest_init"
#17 0x0000000000407826 in ztest_run_init () at ../../cmd/ztest/ztest.c:6228
        i = 1
        zs = 0x7ffff7ff9498
#18 main (argc=1, argv=<optimized out>) at ../../cmd/ztest/ztest.c:6286
        kills = 0
        iters = 0
        older = 0
        newer = 0
        zs = 0x7ffff7ff9498
        zc = <optimized out>
        timebuf = "\350?D\367\377\177\000\000\070\365\330\003\000\000\000\000.\000\000\000\001\000\000\000\260\314\377\377\377\177\000\000\260\313\377\377\377\177\000\000\240\314\377\377\377\177\000\000\340\314\377\377\377\177", '\000' <repeats 18 times>, "p\352\372\367\377\177\000\000\000\340\372\367\377\177\000\000\253+@\000\000\000\000\000x\215\361", <incomplete sequence \365>
        numbuf = "\260\351\372\367\377\177"
        spa = 0x7ffff7de566f <do_lookup_x+1727>
        cmd = 0x2 <error: Cannot access memory at address 0x2>
        hasalt = <optimized out>
        f = <optimized out>
        fd_data_str = <optimized out>
        __func__ = "main"
(gdb)

[behlendorf]

This is basically a duplicate of #2154 and #2027. If someone has time to run this to ground that would be very helpful.

[cwedgwood]

@behlendorf I think we should merge this into #2027 and edit that to the effect of:

Assertion `pthread_mutex_destroy(&(mp)->m_lock) == 0 (0x10 == 0x0)' failed.

[behlendorf]

Agreed, closing as duplicate of #2027.