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pkg/report: improve uvm_fault reports on OpenBSD
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Some reports[1] does not include a symbol but rather an address in the
"Stopped at" line. There's unfortunately no useful context to add to the
title so make them generic instead.

[1] https://syzkaller.appspot.com/bug?id=3e44d0b128fd8d6826e4d0044baadcfc02ba7125
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@mptre
mptre committed Sep 28, 2019
1 parent d8074e0 commit eb6b985
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4 changes: 4 additions & 0 deletions pkg/report/openbsd.go
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Original file line number Diff line number Diff line change
Expand Up @@ -201,6 +201,10 @@ var openbsdOopses = []*oops{
{
[]byte("uvm_fault"),
[]oopsFormat{
{
title: compile("uvm_fault\\((?:.*\\n)+?.*Stopped at[ ]+{{ADDR}}"),
fmt: "uvm_fault",
},
{
title: compile("uvm_fault\\((?:.*\\n)+?.*Stopped at[ ]+([^\\+]+)"),
fmt: "uvm_fault: %[1]v",
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246 changes: 246 additions & 0 deletions pkg/report/testdata/openbsd/report/18
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Original file line number Diff line number Diff line change
@@ -0,0 +1,246 @@
TITLE: uvm_fault

uvm_fault(0xffffffff82524170, 0xfffffd802ea85278, 0, 4) -> e
kernel: page fault trap, code=0
Stopped at 0xfffffd802ea85278: movl $0xffffffffdc4907fc,0(%rdi)
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
kernel page fault
uvm_fault(0xffffffff82524170, 0xfffffd802ea85278, 0, 4) -> e
fffffd802ea85278(b,ffff800014892848,83,ffff8000148928e8,0,b) at 0xfffffd802ea85278
end trace frame: 0xffff800014892940, count: 0
ddb> trace
fffffd802ea85278(b,ffff800014892848,83,ffff8000148928e8,0,b) at 0xfffffd802ea85278
rt_match(fffffd803d4185f8,0,1,0) at rt_match+0xbe
in_pcbselsrc(ffff8000148929c0,fffffd8037050a20,fffffd803d418578) at in_pcbselsrc+0x219
in_pcbconnect(fffffd803d418578,fffffd8037050a00) at in_pcbconnect+0x107
udp_usrreq(fffffd802a90ec70,4,0,fffffd8037050a00,0,ffff800014914018) at udp_usrreq+0x560
sys_connect(ffff800014914018,ffff800014892b48,ffff800014892b90) at sys_connect+0x3df
syscall(ffff800014892c10) at syscall+0x507
Xsyscall(6,0,fffffffffffffed2,0,3,5b77dab0010) at Xsyscall+0x128
end of kernel
end trace frame: 0x5b9a7ade190, count: -8
ddb> show registers
rdi 0xffff800000acf000
rsi 0xb
rbp 0xffff800014892830
rbx 0xfffffd802e70d858
rdx 0xfffffd802e70d858
rcx 0xffff800015532000
rax 0xffff800015532000
r8 0x100
r9 0x7
r10 0xd2c3abbbd22c7d0c
r11 0xfffffd802ea85278
r12 0xfffffd802e70d858
r13 0xffff800014892848
r14 0xffff8000148928e8
r15 0xffff80000005b270
rip 0xfffffd802ea85278
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff800014892738
ss 0x10
0xfffffd802ea85278: movl $0xffffffffdc4907fc,0(%rdi)
ddb> show proc
PROC (syz-executor.0) pid=216738 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=80, usrpri=80, nice=20
forw=0xffffffffffffffff, list=0xffff800014915b40,0xffffffff82560a98
process=0xffff8000148a2a38 user=0xffff80001488d000, vmspace=0xfffffd803f014aa0
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
60896 418878 3672 0 2 0 syz-executor.0
*60896 216738 3672 0 7 0x4000000 syz-executor.0
92972 67132 644 0 2 0x2 syz-executor.1
3672 248377 644 0 3 0x82 nanosleep syz-executor.0
23277 357630 0 0 3 0x14200 acct acct
22894 173373 1 0 3 0x100083 ttyin getty
99292 108321 0 0 3 0x14200 bored sosplice
644 63390 52473 0 3 0x82 thrsleep syz-fuzzer
644 65321 52473 0 3 0x4000082 nanosleep syz-fuzzer
644 199837 52473 0 3 0x4000082 kqread syz-fuzzer
644 201713 52473 0 3 0x4000082 thrsleep syz-fuzzer
644 65479 52473 0 3 0x4000082 thrsleep syz-fuzzer
644 336625 52473 0 3 0x4000082 thrsleep syz-fuzzer
644 329262 52473 0 3 0x4000082 thrsleep syz-fuzzer
644 88613 52473 0 3 0x4000082 thrsleep syz-fuzzer
52473 352227 69055 0 3 0x10008a pause ksh
69055 494258 2441 0 3 0x92 select sshd
2441 282440 1 0 3 0x80 select sshd
57615 523133 74792 73 3 0x100090 kqread syslogd
74792 332347 1 0 3 0x100082 netio syslogd
97234 461043 1 77 3 0x100090 poll dhclient
16289 434121 1 0 3 0x80 poll dhclient
11181 77917 0 0 2 0x14200 zerothread
95801 272579 0 0 3 0x14200 aiodoned aiodoned
61311 204347 0 0 3 0x14200 syncer update
62085 426707 0 0 3 0x14200 cleaner cleaner
25921 441877 0 0 3 0x14200 reaper reaper
5462 52356 0 0 3 0x14200 pgdaemon pagedaemon
98972 400150 0 0 3 0x14200 bored crynlk
55417 248556 0 0 3 0x14200 bored crypto
521 294182 0 0 3 0x40014200 acpi0 acpi0
92086 336305 0 0 3 0x14200 bored softnet
49814 132787 0 0 3 0x14200 bored systqmp
77179 143073 0 0 3 0x14200 bored systq
91304 311244 0 0 3 0x40014200 bored softclock
10936 64699 0 0 3 0x40014200 idle0
48765 201907 0 0 3 0x14200 bored smr
1 355874 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim
devbuf 9609 7211K 15209K 78643K 38241 0 0
pcb 13 11K 13K 78643K 1566 0 0
rtable 117 12K 14K 78643K 3555 0 0
ifaddr 96 21K 22K 78643K 1040 0 0
counters 19 16K 16K 78643K 19 0 0
ioctlops 0 0K 2K 78643K 298 0 0
iov 0 0K 32K 78643K 1396 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1219 77K 77K 78643K 9328 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 2 1K 5K 78643K 73 0 0
VM map 2 0K 0K 78643K 28 0 0
sem 12 1K 1K 78643K 2546 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1793 195K 288K 78643K 12645 0 0
file desc 5 13K 25K 78643K 7799 0 0
sigio 0 0K 0K 78643K 101 0 0
proc 50 38K 63K 78643K 2256 0 0
subproc 32 2K 2K 78643K 552 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
ip_moptions 0 0K 0K 78643K 482 0 0
in_multi 24 1K 2K 78643K 593 0 0
ether_multi 1 0K 0K 78643K 37 0 0
mrt 0 0K 0K 78643K 40 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 84 371K 371K 78643K 84 0 0
exec 0 0K 1K 78643K 2089 0 0
pfkey data 0 0K 4K 78643K 2 0 0
pagedep 1 8K 8K 78643K 1 0 0
inodedep 1 32K 32K 78643K 1 0 0
newblk 1 0K 0K 78643K 1 0 0
VM swap 7 26K 26K 78643K 7 0 0
UVM amap 117 22K 40K 78643K 22122 0 0
UVM aobj 130 6K 6K 78643K 146 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
ip6_options 0 0K 1K 78643K 1306 0 0
NDP 23 0K 1K 78643K 323 0 0
temp 247 3541K 4181K 78643K 260796 0 0
kqueue 0 0K 0K 78643K 51 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 114 0 108 1 0 1 1 0 8 0
rtpcb 80 561 0 559 1 0 1 1 0 8 0
rtentry 112 574 0 535 2 0 2 2 0 8 0
unpcb 120 17681 0 17653 31 29 2 3 0 8 0
syncache 264 30 0 30 15 15 0 1 0 8 0
sackhl 24 1 0 1 1 1 0 1 0 8 0
tcpqe 32 7807 0 7807 8 8 0 1 0 8 0
tcpcb 544 2350 0 2346 33 32 1 16 0 8 0
ipq 40 52 0 52 17 17 0 1 0 8 0
ipqe 40 116 0 116 17 17 0 1 0 8 0
inpcb 280 12054 0 12045 55 53 2 10 0 8 1
rttmr 72 13 0 12 4 3 1 1 0 8 0
ip6q 72 1 0 1 1 1 0 1 0 8 0
nd6 48 73 0 71 8 7 1 1 0 8 0
pkpcb 40 24 0 24 7 7 0 1 0 8 0
swfcl 56 4 0 0 1 0 1 1 0 8 0
ppxss 1128 126 0 126 38 37 1 1 0 8 1
art_heap8 4096 39 0 37 26 24 2 4 0 8 0
art_heap4 256 2600 0 2371 48 33 15 19 0 8 0
art_table 32 2639 0 2408 6 4 2 3 0 8 0
art_node 16 567 0 531 1 0 1 1 0 8 0
sysvmsgpl 40 27 0 27 2 2 0 1 0 8 0
semupl 112 2 0 2 2 2 0 1 0 8 0
semapl 112 2544 0 2534 1 0 1 1 0 8 0
shmpl 112 144 0 16 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 14198 0 12801 46 0 46 46 0 8 0
ffsino 240 14198 0 12801 83 0 83 83 0 8 0
nchpl 144 26669 0 25052 61 0 61 61 0 8 0
uvmvnodes 72 8848 0 0 161 0 161 161 0 8 0
vnodes 208 8848 0 0 466 0 466 466 0 8 0
namei 1024 88230 0 88229 3 2 1 1 0 8 0
vmpool 520 26 0 26 11 11 0 1 0 8 0
scsiplug 64 8 0 8 6 6 0 1 0 8 0
scxspl 192 89297 0 89297 53 49 4 7 0 8 4
plimitpl 152 758 0 751 1 0 1 1 0 8 0
sigapl 432 7885 0 7872 2 0 2 2 0 8 0
futexpl 56 226084 0 226084 2 1 1 1 0 8 1
knotepl 112 1638 0 1619 4 3 1 2 0 8 0
kqueuepl 104 1954 0 1952 7 6 1 4 0 8 0
pipepl 112 3228 0 3209 15 13 2 2 0 8 1
fdescpl 424 7886 0 7872 2 0 2 2 0 8 0
filepl 120 75363 0 75266 60 55 5 11 0 8 2
lockfpl 104 2324 0 2323 1 0 1 1 0 8 0
lockfspl 48 817 0 816 1 0 1 1 0 8 0
sessionpl 112 52 0 42 1 0 1 1 0 8 0
pgrppl 48 90 0 80 1 0 1 1 0 8 0
ucredpl 96 6307 0 6300 1 0 1 1 0 8 0
zombiepl 144 7877 0 7877 3 2 1 1 0 8 1
processpl 864 7907 0 7877 4 0 4 4 0 8 0
procpl 632 19060 0 19022 19 15 4 5 0 8 0
sosppl 128 2379 0 2379 7 6 1 1 0 8 1
sockpl 384 30483 0 30444 125 118 7 15 0 8 2
mcl64k 65536 2971 0 2971 265 264 1 64 0 8 1
mcl16k 16384 112 0 112 33 32 1 1 0 8 1
mcl12k 12288 234 0 234 31 30 1 1 0 8 1
mcl9k 9216 208 0 208 36 35 1 1 0 8 1
mcl8k 8192 1046 0 1046 17 16 1 1 0 8 1
mcl4k 4096 1197 0 1197 9 8 1 1 0 8 1
mcl2k2 2112 59 0 59 26 26 0 1 0 8 0
mcl2k 2048 67920 0 67878 43 36 7 15 0 8 1
mtagpl 80 339 0 335 7 6 1 1 0 8 0
mbufpl 256 185413 0 185327 182 171 11 40 0 8 1
bufpl 256 39595 0 30734 555 0 555 555 0 8 0
anonpl 16 880550 0 866379 321 250 71 81 0 62 2
amapchunkpl 152 44774 0 44670 150 132 18 18 0 158 12
amappl16 192 44106 0 43209 352 306 46 58 0 8 0
amappl15 184 3103 0 3103 8 8 0 1 0 8 0
amappl14 176 634 0 631 2 1 1 1 0 8 0
amappl13 168 1658 0 1658 4 4 0 1 0 8 0
amappl12 160 921 0 919 2 1 1 1 0 8 0
amappl11 152 2027 0 2016 1 0 1 1 0 8 0
amappl10 144 260 0 257 1 0 1 1 0 8 0
amappl9 136 1523 0 1516 1 0 1 1 0 8 0
amappl8 128 1070 0 1027 2 0 2 2 0 8 0
amappl7 120 386 0 378 1 0 1 1 0 8 0
amappl6 112 1959 0 1943 1 0 1 1 0 8 0
amappl5 104 1386 0 1376 1 0 1 1 0 8 0
amappl4 96 9324 0 9296 1 0 1 1 0 8 0
amappl3 88 808 0 803 1 0 1 1 0 8 0
amappl2 80 63051 0 62982 4 2 2 3 0 8 0
amappl1 72 155605 0 155199 28 19 9 20 0 8 0
amappl 80 20509 0 20474 1 0 1 1 0 84 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 253 0 253 1 1 0 1 0 8 0
dma64 64 6 0 6 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 17 0 17 1 1 0 1 0 8 0
aobjpl 64 145 0 16 3 0 3 3 0 8 0
uaddrrnd 24 7912 0 7872 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 7912 0 7872 1 0 1 1 0 8 0
vmmpekpl 168 51251 0 51223 2 0 2 2 0 8 0
vmmpepl 168 950899 0 948936 620 500 120 126 0 357 26
vmsppl 272 7885 0 7872 6 5 1 2 0 8 0
pdppl 4096 15830 0 15796 6 1 5 6 0 8 0
pvpl 32 2427032 0 2409728 723 539 184 271 0 265 25
pmappl 200 7911 0 7898 1 0 1 1 0 8 0
extentpl 40 41 0 26 1 0 1 1 0 8 0
phpool 112 1314 0 626 23 2 21 23 0 8 0

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