連続稼働で時々panicする。条件不明

[Piro77]

from https://www.starlink.jp/pt3-freebsd-driver-pach/

Sleeping thread (tid 100124, pid 86675) owns a non-sleepable lock
KDB: stack backtrace of thread 100124:
#0 0xffffffff805cab32 at mi_switch+0xd2
#1 0xffffffff8061807a at sleepq_timedwait+0x3a
#2 0xffffffff805ca4e1 at _sleep+0x281
#3 0xffffffff805ca94e at pause_sbt+0x6e
#4 0xffffffff8171ae7c at pt3_dma_set_enabled+0x1dc
#5 0xffffffff8171d6c7 at pt3close+0x47
#6 0xffffffff804729d5 at devfs_close+0x5e5
#7 0xffffffff8098a5d9 at VOP_CLOSE_APV+0x89
#8 0xffffffff806a08ae at vn_close+0x13e
#9 0xffffffff8069f35a at vn_closefile+0x4a
#10 0xffffffff804735fc at devfs_close_f+0x2c
#11 0xffffffff8055be3a at _fdrop+0x1a
#12 0xffffffff8055f914 at closef+0x2d4
#13 0xffffffff8055c336 at closefp+0xb6
#14 0xffffffff8091e0fe at amd64_syscall+0x4ce
#15 0xffffffff8090220b at Xfast_syscall+0xfb
panic: sleeping thread
cpuid = 1
KDB: stack backtrace:
#0 0xffffffff80609957 at kdb_backtrace+0x67
#1 0xffffffff805bf902 at vpanic+0x182
#2 0xffffffff805bf773 at panic+0x43
#3 0xffffffff8061f379 at propagate_priority+0x299
#4 0xffffffff8061fe7f at turnstile_wait+0x3ef
#5 0xffffffff8059c1fd at __mtx_lock_sleep+0x13d
#6 0xffffffff8171d6af at pt3close+0x2f
#7 0xffffffff804729d5 at devfs_close+0x5e5
#8 0xffffffff8098a5d9 at VOP_CLOSE_APV+0x89
#9 0xffffffff806a08ae at vn_close+0x13e
#10 0xffffffff8069f35a at vn_closefile+0x4a
#11 0xffffffff804735fc at devfs_close_f+0x2c
#12 0xffffffff8055be3a at _fdrop+0x1a
#13 0xffffffff8055f914 at closef+0x2d4
#14 0xffffffff8055c336 at closefp+0xb6
#15 0xffffffff8091e0fe at amd64_syscall+0x4ce
#16 0xffffffff8090220b at Xfast_syscall+0xfb
Uptime: 35d7h25m53s