panic: rw_enter: netlock locking against myself
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syzbot
Apr 9, 2020, 5:34:15 AM4/9/20
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: c220f9cf Use a separate node->tag attribute rather than ab..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=128b0a77e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=7c805a09545d997b924d
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+7c805a...@syzkaller.appspotmail.com
panic: rw_enter: netlock locking against myself
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
31525 28500 0 0 0x4000000 1 syz-executor.1
*410218 28500 0 0 0x4000000 0K syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff822277f7) at panic+0x15c sys/kern/subr_prf.c:207
rw_enter(ffffffff825310b8,1) at rw_enter+0x518 sys/kern/kern_rwlock.c:173
solock(fffffd80644e57e8) at solock+0x5a sys/kern/uipc_socket2.c:282
soclose(fffffd80644e57e8,0) at soclose+0x2f sys/kern/uipc_socket.c:290
soo_close(fffffd806785fe58,ffff800020ec64f8) at soo_close+0x40
fdrop(fffffd806785fe58,ffff800020ec64f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1276
sosplice(fffffd80644e54c8,3,0,0) at sosplice+0x475
sosetopt(fffffd80644e54c8,ffff,1023,fffffd806437f100) at sosetopt+0x830
sys_setsockopt(ffff800020ec64f8,ffff800021f9d848,ffff800021f9d890) at sys_setsockopt+0x215 sys/kern/uipc_syscalls.c:965
syscall(ffff800021f9d910) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021f9d910) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa257d7e3ab0, count: 3
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
rw_enter: netlock locking against myself
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff822277f7) at panic+0x15c sys/kern/subr_prf.c:207
rw_enter(ffffffff825310b8,1) at rw_enter+0x518 sys/kern/kern_rwlock.c:173
solock(fffffd80644e57e8) at solock+0x5a sys/kern/uipc_socket2.c:282
soclose(fffffd80644e57e8,0) at soclose+0x2f sys/kern/uipc_socket.c:290
soo_close(fffffd806785fe58,ffff800020ec64f8) at soo_close+0x40
fdrop(fffffd806785fe58,ffff800020ec64f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1276
sosplice(fffffd80644e54c8,3,0,0) at sosplice+0x475
sosetopt(fffffd80644e54c8,ffff,1023,fffffd806437f100) at sosetopt+0x830
sys_setsockopt(ffff800020ec64f8,ffff800021f9d848,ffff800021f9d890) at sys_setsockopt+0x215 sys/kern/uipc_syscalls.c:965
syscall(ffff800021f9d910) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021f9d910) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa257d7e3ab0, count: -12
ddb{0}> show registers
rdi 0xffffffff819f29d7 db_enter+0x17
rsi 0x16f5 __ALIGN_SIZE+0x6f5
rbp 0xffff800021f9d450
rbx 0xffff800021f9d500
rdx 0x16f6 __ALIGN_SIZE+0x6f6
rcx 0xffff800023390000
rax 0xffff800023390000
r8 0xffffffff8178384f kprintf+0x16f
r9 0x1
r10 0x25
r11 0x88b9b8338f52e6a7
r12 0x3000000008
r13 0xffff800021f9d460
r14 0x100
r15 0x1
rip 0xffffffff819f29d8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800021f9d440
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.1) pid=410218 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff800020ec6eb8,0xffffffff8263d2f0
process=0xffff800020e923f8 user=0xffff800021f98000, vmspace=0xfffffd8063f785d0
estcpu=36, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
17620 485335 62296 0 2 0 syz-executor.0
28500 474963 13669 0 2 0 syz-executor.1
28500 31525 13669 0 7 0x4000000 syz-executor.1
*28500 410218 13669 0 7 0x4000000 syz-executor.1
79958 193459 0 0 3 0x14200 bored sosplice
13669 361929 94771 0 3 0x82 nanosleep syz-executor.1
62296 522591 94771 0 3 0x82 nanosleep syz-executor.0
94771 333313 462 0 3 0x82 kqread syz-fuzzer
94771 453800 462 0 3 0x4000082 nanosleep syz-fuzzer
94771 162045 462 0 3 0x4000082 thrsleep syz-fuzzer
94771 254329 462 0 3 0x4000082 thrsleep syz-fuzzer
94771 65358 462 0 3 0x4000082 thrsleep syz-fuzzer
94771 249493 462 0 3 0x4000082 thrsleep syz-fuzzer
94771 477705 462 0 3 0x4000082 thrsleep syz-fuzzer
94771 447955 462 0 3 0x4000082 thrsleep syz-fuzzer
94771 451828 462 0 3 0x4000082 thrsleep syz-fuzzer
94771 119539 462 0 3 0x4000082 nanosleep syz-fuzzer
462 120374 42392 0 3 0x10008a pause ksh
42392 284564 22632 0 3 0x92 select sshd
45463 234041 1 0 3 0x100083 ttyin getty
22632 405753 1 0 3 0x80 select sshd
91166 509575 50108 74 3 0x100092 bpf pflogd
50108 209592 1 0 3 0x80 netio pflogd
91954 420101 28858 73 3 0x100090 kqread syslogd
28858 194537 1 0 3 0x100082 netio syslogd
2934 231216 1 77 3 0x100090 poll dhclient
78525 318863 1 0 3 0x80 poll dhclient
8743 357301 0 0 3 0x14200 bored smr
45190 155953 0 0 2 0x14200 zerothread
84322 324201 0 0 3 0x14200 aiodoned aiodoned
54602 269062 0 0 3 0x14200 syncer update
34433 443057 0 0 3 0x14200 cleaner cleaner
7702 252500 0 0 3 0x14200 reaper reaper
22574 460128 0 0 3 0x14200 pgdaemon pagedaemon
29708 249809 0 0 3 0x14200 bored crynlk
42589 372274 0 0 3 0x14200 bored crypto
86250 448272 0 0 3 0x40014200 acpi0 acpi0
5085 476041 0 0 3 0x40014200 idle1
53768 174524 0 0 3 0x14200 bored softnet
26015 185336 0 0 3 0x14200 bored systqmp
48689 184752 0 0 3 0x14200 bored systq
74568 243029 0 0 3 0x40014200 bored softclock
99135 15383 0 0 3 0x40014200 idle0
1 165060 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 28500 (syz-executor.1) thread 0xffff800020ec64f8 (410218)
exclusive rwlock netlock r = 0 (0xffffffff825310c8)
#0 witness_lock+0x4c5 sys/kern/subr_witness.c:1164
#1 solock+0x5a sys/kern/uipc_socket2.c:282
#2 sys_setsockopt+0x1fa sys/kern/uipc_syscalls.c:964
#3 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#3 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#4 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff826739f0)
#0 witness_lock+0x4c5 sys/kern/subr_witness.c:1164
#1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:93 [inline]
#1 syscall+0x400 sys/arch/amd64/amd64/trap.c:570
#2 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9519 6542K 6800K 78643K 11129 0
pcb 13 8K 8K 78643K 104 0
rtable 115 12K 12K 78643K 305 0
ifaddr 73 15K 15K 78643K 109 0
counters 43 33K 34K 78643K 59 0
ioctlops 0 0K 4K 78643K 1492 0
iov 0 0K 28K 78643K 53 0
mount 1 1K 1K 78643K 1 0
vnodes 1221 77K 77K 78643K 1372 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 11 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 44 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 196K 290K 78643K 12766 0
file desc 6 17K 25K 78643K 320 0
sigio 0 0K 0K 78643K 6 0
proc 61 63K 95K 78643K 488 0
subproc 32 2K 2K 78643K 34 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 67 0
in_multi 59 3K 3K 78643K 106 0
ether_multi 1 0K 0K 78643K 20 0
mrt 0 0K 0K 78643K 13 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 37 175K 175K 78643K 37 0
exec 0 0K 1K 78643K 224 0
pfkey data 0 0K 1K 78643K 2 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM amap 116 86K 103K 78643K 2007 0
UVM aobj 16 4K 4K 78643K 26 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 75 0
NDP 11 0K 0K 78643K 23 0
temp 107 3045K 3109K 78643K 4847 0
kqueue 3 4K 8K 78643K 20 0
SYN cache 2 16K 16K 78643K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 7 0 1 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 33 0 31 1 0 1 1 0 8 0
rtentry 112 54 0 8 2 0 2 2 0 8 0
unpcb 120 157 0 147 1 0 1 1 0 8 0
syncache 264 7 0 7 2 2 0 1 0 8 0
tcpqe 32 382 0 382 1 1 0 1 0 8 0
tcpcb 544 200 0 195 1 0 1 1 0 8 0
inpcb 280 1203 0 1191 2 0 2 2 0 8 1
rttmr 72 4 0 4 1 1 0 1 0 8 0
nd6 48 8 0 0 1 0 1 1 0 8 0
pkpcb 40 2 0 2 1 0 1 1 0 8 1
ppxss 1128 1 0 1 1 0 1 1 0 8 1
pffrag 232 1 0 1 1 0 1 1 0 482 1
pffrnode 88 1 0 1 1 0 1 1 0 8 1
pffrent 40 45 0 45 1 0 1 1 0 8 1
pfosfp 40 846 0 423 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstitem 24 39 0 6 1 0 1 1 0 8 0
pfstkey 112 39 0 6 1 0 1 1 0 8 0
pfstate 328 39 0 6 3 0 3 3 0 8 0
pfrule 1360 21 0 16 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 212 0 2 14 0 14 14 0 8 0
art_table 32 213 0 2 2 0 2 2 0 8 0
art_node 16 53 0 11 1 0 1 1 0 8 0
sysvmsgpl 40 14 0 4 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 42 0 32 1 0 1 1 0 8 0
shmpl 112 24 0 10 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 1833 0 426 46 0 46 46 0 8 0
ffsino 272 1833 0 426 94 0 94 94 0 8 0
nchpl 144 2493 0 874 61 0 61 61 0 8 0
uvmvnodes 72 1991 0 0 37 0 37 37 0 8 0
vnodes 208 1991 0 0 105 0 105 105 0 8 0
namei 1024 6819 0 6819 1 0 1 1 0 8 1
percpumem 16 40 0 8 1 0 1 1 0 8 0
vcpupl 1984 8 0 0 1 0 1 1 0 8 0
vmpool 560 12 0 4 1 0 1 1 0 8 0
scxspl 192 7862 0 7862 8 7 1 7 0 8 1
plimitpl 152 53 0 45 1 0 1 1 0 8 0
sigapl 424 536 0 503 4 0 4 4 0 8 0
futexpl 56 5775 0 5775 1 0 1 1 0 8 1
knotepl 112 75 0 56 1 0 1 1 0 8 0
kqueuepl 144 51 0 49 1 0 1 1 0 8 0
pipelkpl 48 120 0 110 1 0 1 1 0 8 0
pipepl 120 240 0 221 1 0 1 1 0 8 0
fdescpl 496 520 0 503 3 0 3 3 0 8 0
filepl 152 3605 0 3501 5 0 5 5 0 8 1
lockfpl 104 108 0 107 1 0 1 1 0 8 0
lockfspl 48 42 0 41 1 0 1 1 0 8 0
sessionpl 112 18 0 7 1 0 1 1 0 8 0
pgrppl 48 18 0 7 1 0 1 1 0 8 0
ucredpl 96 268 0 259 1 0 1 1 0 8 0
zombiepl 144 503 0 503 1 0 1 1 0 8 1
processpl 984 536 0 503 5 0 5 5 0 8 0
procpl 624 1222 0 1178 4 0 4 4 0 8 0
sosppl 128 202 0 200 1 0 1 1 0 8 0
sockpl 400 1404 0 1381 4 0 4 4 0 8 1
mcl64k 65536 7 0 0 1 0 1 1 0 8 0
mcl16k 16384 1 0 0 1 0 1 1 0 8 0
mcl12k 12288 2 0 0 1 0 1 1 0 8 0
mcl9k 9216 3 0 0 1 0 1 1 0 8 0
mcl8k 8192 3 0 0 1 0 1 1 0 8 0
mcl4k 4096 5 0 0 1 0 1 1 0 8 0
mcl2k2 2112 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 211 0 0 26 0 26 26 0 8 0
mtagpl 80 35 0 0 1 0 1 1 0 8 0
mbufpl 256 331 0 0 19 0 19 19 0 8 0
bufpl 280 4887 0 174 337 0 337 337 0 8 0
anonpl 16 67598 0 53141 79 4 75 75 0 124 14
amapchunkpl 152 3489 0 3352 19 10 9 19 0 158 3
amappl16 192 2698 0 1878 58 8 50 54 0 8 8
amappl15 184 1 0 0 1 0 1 1 0 8 0
amappl14 176 2 0 2 2 2 0 1 0 8 0
amappl13 168 26 0 25 1 0 1 1 0 8 0
amappl12 160 150 0 146 2 1 1 1 0 8 0
amappl11 152 221 0 200 2 1 1 2 0 8 0
amappl10 144 15 0 10 1 0 1 1 0 8 0
amappl9 136 391 0 387 1 0 1 1 0 8 0
amappl8 128 297 0 283 1 0 1 1 0 8 0
amappl7 120 118 0 108 1 0 1 1 0 8 0
amappl6 112 172 0 168 1 0 1 1 0 8 0
amappl5 104 420 0 402 1 0 1 1 0 8 0
amappl4 96 506 0 472 2 1 1 2 0 8 0
amappl3 88 116 0 110 1 0 1 1 0 8 0
amappl2 80 3402 0 3325 3 1 2 3 0 8 0
amappl1 72 21249 0 20789 25 15 10 20 0 8 0
amappl 80 1482 0 1432 2 0 2 2 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 18 0 17 1 0 1 1 0 8 0
aobjpl 64 25 0 10 1 0 1 1 0 8 0
uaddrrnd 24 532 0 507 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 532 0 507 1 0 1 1 0 8 0
vmmpekpl 168 7676 0 7642 2 0 2 2 0 8 0
vmmpepl 168 70564 0 68505 111 9 102 102 0 357 11
vmsppl 368 531 0 507 3 0 3 3 0 8 0
pdppl 4096 1072 0 1022 8 1 7 7 0 8 0
pvpl 32 209625 0 192488 180 4 176 178 0 265 34
pmappl 232 531 0 507 2 0 2 2 0 8 0
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 186 0 4 6 0 6 6 0 8 0
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following crash on:
HEAD commit: c220f9cf Use a separate node->tag attribute rather than ab..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=128b0a77e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=7c805a09545d997b924d
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+7c805a...@syzkaller.appspotmail.com
panic: rw_enter: netlock locking against myself
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
31525 28500 0 0 0x4000000 1 syz-executor.1
*410218 28500 0 0 0x4000000 0K syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff822277f7) at panic+0x15c sys/kern/subr_prf.c:207
rw_enter(ffffffff825310b8,1) at rw_enter+0x518 sys/kern/kern_rwlock.c:173
solock(fffffd80644e57e8) at solock+0x5a sys/kern/uipc_socket2.c:282
soclose(fffffd80644e57e8,0) at soclose+0x2f sys/kern/uipc_socket.c:290
soo_close(fffffd806785fe58,ffff800020ec64f8) at soo_close+0x40
fdrop(fffffd806785fe58,ffff800020ec64f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1276
sosplice(fffffd80644e54c8,3,0,0) at sosplice+0x475
sosetopt(fffffd80644e54c8,ffff,1023,fffffd806437f100) at sosetopt+0x830
sys_setsockopt(ffff800020ec64f8,ffff800021f9d848,ffff800021f9d890) at sys_setsockopt+0x215 sys/kern/uipc_syscalls.c:965
syscall(ffff800021f9d910) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021f9d910) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa257d7e3ab0, count: 3
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
rw_enter: netlock locking against myself
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff822277f7) at panic+0x15c sys/kern/subr_prf.c:207
rw_enter(ffffffff825310b8,1) at rw_enter+0x518 sys/kern/kern_rwlock.c:173
solock(fffffd80644e57e8) at solock+0x5a sys/kern/uipc_socket2.c:282
soclose(fffffd80644e57e8,0) at soclose+0x2f sys/kern/uipc_socket.c:290
soo_close(fffffd806785fe58,ffff800020ec64f8) at soo_close+0x40
fdrop(fffffd806785fe58,ffff800020ec64f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1276
sosplice(fffffd80644e54c8,3,0,0) at sosplice+0x475
sosetopt(fffffd80644e54c8,ffff,1023,fffffd806437f100) at sosetopt+0x830
sys_setsockopt(ffff800020ec64f8,ffff800021f9d848,ffff800021f9d890) at sys_setsockopt+0x215 sys/kern/uipc_syscalls.c:965
syscall(ffff800021f9d910) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021f9d910) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa257d7e3ab0, count: -12
ddb{0}> show registers
rdi 0xffffffff819f29d7 db_enter+0x17
rsi 0x16f5 __ALIGN_SIZE+0x6f5
rbp 0xffff800021f9d450
rbx 0xffff800021f9d500
rdx 0x16f6 __ALIGN_SIZE+0x6f6
rcx 0xffff800023390000
rax 0xffff800023390000
r8 0xffffffff8178384f kprintf+0x16f
r9 0x1
r10 0x25
r11 0x88b9b8338f52e6a7
r12 0x3000000008
r13 0xffff800021f9d460
r14 0x100
r15 0x1
rip 0xffffffff819f29d8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800021f9d440
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.1) pid=410218 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff800020ec6eb8,0xffffffff8263d2f0
process=0xffff800020e923f8 user=0xffff800021f98000, vmspace=0xfffffd8063f785d0
estcpu=36, cpticks=0, pctcpu=0.0
user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
17620 485335 62296 0 2 0 syz-executor.0
28500 474963 13669 0 2 0 syz-executor.1
28500 31525 13669 0 7 0x4000000 syz-executor.1
*28500 410218 13669 0 7 0x4000000 syz-executor.1
79958 193459 0 0 3 0x14200 bored sosplice
13669 361929 94771 0 3 0x82 nanosleep syz-executor.1
62296 522591 94771 0 3 0x82 nanosleep syz-executor.0
94771 333313 462 0 3 0x82 kqread syz-fuzzer
94771 453800 462 0 3 0x4000082 nanosleep syz-fuzzer
94771 162045 462 0 3 0x4000082 thrsleep syz-fuzzer
94771 254329 462 0 3 0x4000082 thrsleep syz-fuzzer
94771 65358 462 0 3 0x4000082 thrsleep syz-fuzzer
94771 249493 462 0 3 0x4000082 thrsleep syz-fuzzer
94771 477705 462 0 3 0x4000082 thrsleep syz-fuzzer
94771 447955 462 0 3 0x4000082 thrsleep syz-fuzzer
94771 451828 462 0 3 0x4000082 thrsleep syz-fuzzer
94771 119539 462 0 3 0x4000082 nanosleep syz-fuzzer
462 120374 42392 0 3 0x10008a pause ksh
42392 284564 22632 0 3 0x92 select sshd
45463 234041 1 0 3 0x100083 ttyin getty
22632 405753 1 0 3 0x80 select sshd
91166 509575 50108 74 3 0x100092 bpf pflogd
50108 209592 1 0 3 0x80 netio pflogd
91954 420101 28858 73 3 0x100090 kqread syslogd
28858 194537 1 0 3 0x100082 netio syslogd
2934 231216 1 77 3 0x100090 poll dhclient
78525 318863 1 0 3 0x80 poll dhclient
8743 357301 0 0 3 0x14200 bored smr
45190 155953 0 0 2 0x14200 zerothread
84322 324201 0 0 3 0x14200 aiodoned aiodoned
54602 269062 0 0 3 0x14200 syncer update
34433 443057 0 0 3 0x14200 cleaner cleaner
7702 252500 0 0 3 0x14200 reaper reaper
22574 460128 0 0 3 0x14200 pgdaemon pagedaemon
29708 249809 0 0 3 0x14200 bored crynlk
42589 372274 0 0 3 0x14200 bored crypto
86250 448272 0 0 3 0x40014200 acpi0 acpi0
5085 476041 0 0 3 0x40014200 idle1
53768 174524 0 0 3 0x14200 bored softnet
26015 185336 0 0 3 0x14200 bored systqmp
48689 184752 0 0 3 0x14200 bored systq
74568 243029 0 0 3 0x40014200 bored softclock
99135 15383 0 0 3 0x40014200 idle0
1 165060 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 28500 (syz-executor.1) thread 0xffff800020ec64f8 (410218)
exclusive rwlock netlock r = 0 (0xffffffff825310c8)
#0 witness_lock+0x4c5 sys/kern/subr_witness.c:1164
#1 solock+0x5a sys/kern/uipc_socket2.c:282
#2 sys_setsockopt+0x1fa sys/kern/uipc_syscalls.c:964
#3 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#3 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#4 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff826739f0)
#0 witness_lock+0x4c5 sys/kern/subr_witness.c:1164
#1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:93 [inline]
#1 syscall+0x400 sys/arch/amd64/amd64/trap.c:570
#2 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9519 6542K 6800K 78643K 11129 0
pcb 13 8K 8K 78643K 104 0
rtable 115 12K 12K 78643K 305 0
ifaddr 73 15K 15K 78643K 109 0
counters 43 33K 34K 78643K 59 0
ioctlops 0 0K 4K 78643K 1492 0
iov 0 0K 28K 78643K 53 0
mount 1 1K 1K 78643K 1 0
vnodes 1221 77K 77K 78643K 1372 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 11 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 44 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 196K 290K 78643K 12766 0
file desc 6 17K 25K 78643K 320 0
sigio 0 0K 0K 78643K 6 0
proc 61 63K 95K 78643K 488 0
subproc 32 2K 2K 78643K 34 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 67 0
in_multi 59 3K 3K 78643K 106 0
ether_multi 1 0K 0K 78643K 20 0
mrt 0 0K 0K 78643K 13 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 37 175K 175K 78643K 37 0
exec 0 0K 1K 78643K 224 0
pfkey data 0 0K 1K 78643K 2 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM amap 116 86K 103K 78643K 2007 0
UVM aobj 16 4K 4K 78643K 26 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 75 0
NDP 11 0K 0K 78643K 23 0
temp 107 3045K 3109K 78643K 4847 0
kqueue 3 4K 8K 78643K 20 0
SYN cache 2 16K 16K 78643K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 7 0 1 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 33 0 31 1 0 1 1 0 8 0
rtentry 112 54 0 8 2 0 2 2 0 8 0
unpcb 120 157 0 147 1 0 1 1 0 8 0
syncache 264 7 0 7 2 2 0 1 0 8 0
tcpqe 32 382 0 382 1 1 0 1 0 8 0
tcpcb 544 200 0 195 1 0 1 1 0 8 0
inpcb 280 1203 0 1191 2 0 2 2 0 8 1
rttmr 72 4 0 4 1 1 0 1 0 8 0
nd6 48 8 0 0 1 0 1 1 0 8 0
pkpcb 40 2 0 2 1 0 1 1 0 8 1
ppxss 1128 1 0 1 1 0 1 1 0 8 1
pffrag 232 1 0 1 1 0 1 1 0 482 1
pffrnode 88 1 0 1 1 0 1 1 0 8 1
pffrent 40 45 0 45 1 0 1 1 0 8 1
pfosfp 40 846 0 423 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstitem 24 39 0 6 1 0 1 1 0 8 0
pfstkey 112 39 0 6 1 0 1 1 0 8 0
pfstate 328 39 0 6 3 0 3 3 0 8 0
pfrule 1360 21 0 16 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 212 0 2 14 0 14 14 0 8 0
art_table 32 213 0 2 2 0 2 2 0 8 0
art_node 16 53 0 11 1 0 1 1 0 8 0
sysvmsgpl 40 14 0 4 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 42 0 32 1 0 1 1 0 8 0
shmpl 112 24 0 10 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 1833 0 426 46 0 46 46 0 8 0
ffsino 272 1833 0 426 94 0 94 94 0 8 0
nchpl 144 2493 0 874 61 0 61 61 0 8 0
uvmvnodes 72 1991 0 0 37 0 37 37 0 8 0
vnodes 208 1991 0 0 105 0 105 105 0 8 0
namei 1024 6819 0 6819 1 0 1 1 0 8 1
percpumem 16 40 0 8 1 0 1 1 0 8 0
vcpupl 1984 8 0 0 1 0 1 1 0 8 0
vmpool 560 12 0 4 1 0 1 1 0 8 0
scxspl 192 7862 0 7862 8 7 1 7 0 8 1
plimitpl 152 53 0 45 1 0 1 1 0 8 0
sigapl 424 536 0 503 4 0 4 4 0 8 0
futexpl 56 5775 0 5775 1 0 1 1 0 8 1
knotepl 112 75 0 56 1 0 1 1 0 8 0
kqueuepl 144 51 0 49 1 0 1 1 0 8 0
pipelkpl 48 120 0 110 1 0 1 1 0 8 0
pipepl 120 240 0 221 1 0 1 1 0 8 0
fdescpl 496 520 0 503 3 0 3 3 0 8 0
filepl 152 3605 0 3501 5 0 5 5 0 8 1
lockfpl 104 108 0 107 1 0 1 1 0 8 0
lockfspl 48 42 0 41 1 0 1 1 0 8 0
sessionpl 112 18 0 7 1 0 1 1 0 8 0
pgrppl 48 18 0 7 1 0 1 1 0 8 0
ucredpl 96 268 0 259 1 0 1 1 0 8 0
zombiepl 144 503 0 503 1 0 1 1 0 8 1
processpl 984 536 0 503 5 0 5 5 0 8 0
procpl 624 1222 0 1178 4 0 4 4 0 8 0
sosppl 128 202 0 200 1 0 1 1 0 8 0
sockpl 400 1404 0 1381 4 0 4 4 0 8 1
mcl64k 65536 7 0 0 1 0 1 1 0 8 0
mcl16k 16384 1 0 0 1 0 1 1 0 8 0
mcl12k 12288 2 0 0 1 0 1 1 0 8 0
mcl9k 9216 3 0 0 1 0 1 1 0 8 0
mcl8k 8192 3 0 0 1 0 1 1 0 8 0
mcl4k 4096 5 0 0 1 0 1 1 0 8 0
mcl2k2 2112 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 211 0 0 26 0 26 26 0 8 0
mtagpl 80 35 0 0 1 0 1 1 0 8 0
mbufpl 256 331 0 0 19 0 19 19 0 8 0
bufpl 280 4887 0 174 337 0 337 337 0 8 0
anonpl 16 67598 0 53141 79 4 75 75 0 124 14
amapchunkpl 152 3489 0 3352 19 10 9 19 0 158 3
amappl16 192 2698 0 1878 58 8 50 54 0 8 8
amappl15 184 1 0 0 1 0 1 1 0 8 0
amappl14 176 2 0 2 2 2 0 1 0 8 0
amappl13 168 26 0 25 1 0 1 1 0 8 0
amappl12 160 150 0 146 2 1 1 1 0 8 0
amappl11 152 221 0 200 2 1 1 2 0 8 0
amappl10 144 15 0 10 1 0 1 1 0 8 0
amappl9 136 391 0 387 1 0 1 1 0 8 0
amappl8 128 297 0 283 1 0 1 1 0 8 0
amappl7 120 118 0 108 1 0 1 1 0 8 0
amappl6 112 172 0 168 1 0 1 1 0 8 0
amappl5 104 420 0 402 1 0 1 1 0 8 0
amappl4 96 506 0 472 2 1 1 2 0 8 0
amappl3 88 116 0 110 1 0 1 1 0 8 0
amappl2 80 3402 0 3325 3 1 2 3 0 8 0
amappl1 72 21249 0 20789 25 15 10 20 0 8 0
amappl 80 1482 0 1432 2 0 2 2 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 18 0 17 1 0 1 1 0 8 0
aobjpl 64 25 0 10 1 0 1 1 0 8 0
uaddrrnd 24 532 0 507 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 532 0 507 1 0 1 1 0 8 0
vmmpekpl 168 7676 0 7642 2 0 2 2 0 8 0
vmmpepl 168 70564 0 68505 111 9 102 102 0 357 11
vmsppl 368 531 0 507 3 0 3 3 0 8 0
pdppl 4096 1072 0 1022 8 1 7 7 0 8 0
pvpl 32 209625 0 192488 180 4 176 178 0 265 34
pmappl 232 531 0 507 2 0 2 2 0 8 0
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 186 0 4 6 0 6 6 0 8 0
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
Apr 9, 2020, 5:47:14 AM4/9/20
to syzkaller-o...@googlegroups.com
syzbot has found a reproducer for the following crash on:
HEAD commit: c220f9cf Use a separate node->tag attribute rather than ab..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=169e0343e00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+7c805a...@syzkaller.appspotmail.com
login: panic: rw_enter: netlock locking against myself
*397038 39781 0 0 0x4000000 1K syz-executor.0
soclose(fffffd806bdedc90,0) at soclose+0x2f sys/kern/uipc_socket.c:290
soo_close(fffffd806d1894d0,ffff800020ec64f8) at soo_close+0x40
fdrop(fffffd806d1894d0,ffff800020ec64f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1276
sosplice(fffffd806eb64c88,3,0,0) at sosplice+0x475
sosetopt(fffffd806eb64c88,ffff,1023,fffffd8070ca4600) at sosetopt+0x830
sys_setsockopt(ffff800020ec64f8,ffff800020f85348,ffff800020f85390) at sys_setsockopt+0x215 sys/kern/uipc_syscalls.c:965
syscall(ffff800020f85410) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020f85410) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
soclose(fffffd806bdedc90,0) at soclose+0x2f sys/kern/uipc_socket.c:290
soo_close(fffffd806d1894d0,ffff800020ec64f8) at soo_close+0x40
fdrop(fffffd806d1894d0,ffff800020ec64f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1276
sosplice(fffffd806eb64c88,3,0,0) at sosplice+0x475
sosetopt(fffffd806eb64c88,ffff,1023,fffffd8070ca4600) at sosetopt+0x830
sys_setsockopt(ffff800020ec64f8,ffff800020f85348,ffff800020f85390) at sys_setsockopt+0x215 sys/kern/uipc_syscalls.c:965
syscall(ffff800020f85410) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020f85410) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff800020f84f50
rbx 0xffff800020f85000
rdx 0x8b
rcx 0x2
rax 0x1
r11 0xdceaf1e9746fcff5
r12 0x3000000008
r13 0xffff800020f84f60
PROC (syz-executor.0) pid=397038 stat=onproc
process=0xffff800020e923f8 user=0xffff800020f80000, vmspace=0xfffffd807efff2e0
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{1}> ps
18043 69652 58225 0 3 0x4000000 biowait syz-executor.1
39781 125522 97715 0 2 0 syz-executor.0
39781 494976 97715 0 7 0x4000000 syz-executor.0
*39781 397038 97715 0 7 0x4000000 syz-executor.0
73628 109003 0 0 3 0x14200 bored sosplice
58225 146735 37483 0 3 0x82 nanosleep syz-executor.1
97715 21782 37483 0 3 0x82 nanosleep syz-executor.0
37483 465442 86486 0 3 0x82 thrsleep syz-execprog
37483 252417 86486 0 3 0x4000082 thrsleep syz-execprog
37483 490186 86486 0 3 0x4000082 thrsleep syz-execprog
37483 162708 86486 0 3 0x4000082 thrsleep syz-execprog
37483 172525 86486 0 3 0x4000082 thrsleep syz-execprog
37483 168708 86486 0 3 0x4000082 kqread syz-execprog
37483 236979 86486 0 3 0x4000082 thrsleep syz-execprog
37483 10766 86486 0 3 0x4000082 thrsleep syz-execprog
37483 414489 86486 0 3 0x4000082 thrsleep syz-execprog
86486 18340 34670 0 3 0x10008a pause ksh
34670 275753 76058 0 3 0x92 select sshd
91621 152391 1 0 3 0x100083 ttyin getty
76058 344672 1 0 3 0x80 select sshd
92666 448396 47579 74 3 0x100092 bpf pflogd
47579 25173 1 0 3 0x80 netio pflogd
97733 482092 7739 73 3 0x100090 kqread syslogd
7739 273638 1 0 3 0x100082 netio syslogd
65424 171159 1 77 3 0x100090 poll dhclient
8263 222079 1 0 3 0x80 poll dhclient
40252 148762 0 0 3 0x14200 bored smr
77488 389073 0 0 2 0x14200 zerothread
57064 43438 0 0 3 0x14200 aiodoned aiodoned
32801 371001 0 0 3 0x14200 syncer update
12474 502643 0 0 3 0x14200 cleaner cleaner
83231 215732 0 0 3 0x14200 reaper reaper
61647 37901 0 0 3 0x14200 pgdaemon pagedaemon
60611 216570 0 0 3 0x14200 bored crynlk
62037 278992 0 0 3 0x14200 bored crypto
77208 519643 0 0 3 0x40014200 acpi0 acpi0
65680 484914 0 0 3 0x40014200 idle1
65305 365760 0 0 3 0x14200 bored softnet
75049 460865 0 0 3 0x14200 bored systqmp
8321 362535 0 0 3 0x14200 bored systq
58785 159793 0 0 3 0x40014200 bored softclock
99628 68122 0 0 3 0x40014200 idle0
1 29600 0 0 3 0x82 wait init
Process 18043 (syz-executor.1) thread 0xffff800020ec7608 (69652)
exclusive rrwlock inode r = 0 (0xfffffd806bdeeb40)
#0 witness_lock+0x4c5 sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:311
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462
#3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140
#4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1358
#5 ffs_inode_alloc+0x1cf sys/ufs/ffs/ffs_alloc.c:392
#6 ufs_makeinode+0xaa sys/ufs/ufs/ufs_vnops.c:1830
#7 ufs_mknod+0x4e sys/ufs/ufs/ufs_vnops.c:172
#8 VOP_MKNOD+0xc6 sys/kern/vfs_vops.c:134
#9 domknodat+0x31e sys/kern/vfs_syscalls.c:1633
#10 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#10 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806bdeea30)
#0 witness_lock+0x4c5 sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:311
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462
#3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603
#4 vn_lock+0x81 sys/kern/vfs_vnops.c:575
#5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419
#6 namei+0x63c sys/kern/vfs_lookup.c:249
#7 domknodat+0x92 sys/kern/vfs_syscalls.c:1585
#8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#9 Xsyscall+0x128
Process 39781 (syz-executor.0) thread 0xffff800020ec64f8 (397038)
pcb 13 8K 8K 78643K 15 0
rtable 105 3K 3K 78643K 199 0
ifaddr 44 10K 10K 78643K 45 0
counters 43 33K 33K 78643K 43 0
ioctlops 0 0K 4K 78643K 1469 0
proc 59 63K 95K 78643K 438 0
ether_multi 1 0K 0K 78643K 1 0
exec 0 0K 1K 78643K 210 0
UVM aobj 2 2K 2K 78643K 2 0
temp 33 3033K 3097K 78643K 2736 0
kqueue 3 4K 4K 78643K 3 0
rtentry 112 45 0 1 2 0 2 2 0 8 0
unpcb 120 29 0 19 1 0 1 1 0 8 0
syncache 264 5 0 5 2 2 0 1 0 8 0
tcpcb 544 8 0 5 1 0 1 1 0 8 0
inpcb 280 1485 0 1476 1 0 1 1 0 8 0
nd6 48 6 0 0 1 0 1 1 0 8 0
pfstkey 112 11 0 2 1 0 1 1 0 8 0
pfstate 328 11 0 2 1 0 1 1 0 8 0
art_table 32 189 0 0 2 0 2 2 0 8 0
art_node 16 44 0 4 1 0 1 1 0 8 0
ffsino 272 2567 0 1157 95 0 95 95 0 8 0
nchpl 144 3150 0 1530 61 0 61 61 0 8 0
uvmvnodes 72 3279 0 0 60 0 60 60 0 8 0
vnodes 208 3279 0 0 173 0 173 173 0 8 0
namei 1024 7847 0 7846 2 1 1 1 0 8 0
percpumem 16 32 0 0 1 0 1 1 0 8 0
scxspl 192 7928 0 7927 9 8 1 7 0 8 0
plimitpl 152 16 0 8 1 0 1 1 0 8 0
sigapl 424 617 0 584 4 0 4 4 0 8 0
futexpl 56 2498 0 2498 1 0 1 1 0 8 1
knotepl 112 51 0 34 1 0 1 1 0 8 0
kqueuepl 144 2 0 0 1 0 1 1 0 8 0
pipelkpl 48 78 0 68 2 1 1 1 0 8 0
pipepl 120 156 0 137 2 1 1 1 0 8 0
fdescpl 496 601 0 584 3 0 3 3 0 8 0
filepl 152 3664 0 3593 3 0 3 3 0 8 0
lockfpl 104 5 0 4 1 0 1 1 0 8 0
lockfspl 48 3 0 2 1 0 1 1 0 8 0
sessionpl 112 20 0 9 1 0 1 1 0 8 0
pgrppl 48 20 0 9 1 0 1 1 0 8 0
ucredpl 96 52 0 43 1 0 1 1 0 8 0
zombiepl 144 584 0 584 2 1 1 1 0 8 1
processpl 984 617 0 584 5 0 5 5 0 8 0
procpl 624 1371 0 1327 4 0 4 4 0 8 0
sosppl 128 721 0 719 1 0 1 1 0 8 0
sockpl 400 1533 0 1512 3 0 3 3 0 8 0
mcl4k 4096 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 56 0 0 7 0 7 7 0 8 0
mtagpl 80 1 0 0 1 0 1 1 0 8 0
mbufpl 256 145 0 0 8 0 8 8 0 8 0
bufpl 280 4115 0 174 282 0 282 282 0 8 0
anonpl 16 43273 0 41129 15 2 13 13 0 124 4
amapchunkpl 152 2907 0 2831 6 0 6 6 0 158 2
amappl16 192 1867 0 1792 4 0 4 4 0 8 0
amappl15 184 1 0 1 1 1 0 1 0 8 0
amappl14 176 7 0 5 2 1 1 1 0 8 0
amappl13 168 26 0 25 2 1 1 1 0 8 0
amappl12 160 191 0 187 2 1 1 1 0 8 0
amappl11 152 88 0 68 2 0 2 2 0 8 1
amappl10 144 15 0 13 1 0 1 1 0 8 0
amappl9 136 235 0 232 1 0 1 1 0 8 0
amappl8 128 290 0 280 1 0 1 1 0 8 0
amappl7 120 129 0 117 1 0 1 1 0 8 0
amappl6 112 27 0 21 1 0 1 1 0 8 0
amappl5 104 676 0 659 1 0 1 1 0 8 0
amappl4 96 529 0 500 2 0 2 2 0 8 1
amappl3 88 111 0 106 1 0 1 1 0 8 0
amappl2 80 3870 0 3794 4 1 3 3 0 8 1
amappl1 72 23171 0 22708 26 8 18 20 0 8 8
amappl 80 1612 0 1577 1 0 1 1 0 84 0
uaddrrnd 24 601 0 584 1 0 1 1 0 8 0
vmmpekpl 168 9206 0 9182 2 0 2 2 0 8 0
vmmpepl 168 63224 0 62070 94 14 80 80 0 357 29
vmsppl 368 600 0 584 2 0 2 2 0 8 0
pdppl 4096 1210 0 1168 6 0 6 6 0 8 0
pvpl 32 168813 0 164099 121 6 115 115 0 265 76
pmappl 232 600 0 584 2 0 2 2 0 8 1
ddb{1}>
HEAD commit: c220f9cf Use a separate node->tag attribute rather than ab..
git tree: openbsd
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=7c805a09545d997b924d
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=141aa343e00000
dashboard link: https://syzkaller.appspot.com/bug?extid=7c805a09545d997b924d
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+7c805a...@syzkaller.appspotmail.com
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
494976 39781 0 0 0x4000000 0 syz-executor.0
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*397038 39781 0 0 0x4000000 1K syz-executor.0
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff822277f7) at panic+0x15c sys/kern/subr_prf.c:207
rw_enter(ffffffff825310b8,1) at rw_enter+0x518 sys/kern/kern_rwlock.c:173
solock(fffffd806bdedc90) at solock+0x5a sys/kern/uipc_socket2.c:282
panic(ffffffff822277f7) at panic+0x15c sys/kern/subr_prf.c:207
rw_enter(ffffffff825310b8,1) at rw_enter+0x518 sys/kern/kern_rwlock.c:173
soclose(fffffd806bdedc90,0) at soclose+0x2f sys/kern/uipc_socket.c:290
soo_close(fffffd806d1894d0,ffff800020ec64f8) at soo_close+0x40
fdrop(fffffd806d1894d0,ffff800020ec64f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1276
sosplice(fffffd806eb64c88,3,0,0) at sosplice+0x475
sosetopt(fffffd806eb64c88,ffff,1023,fffffd8070ca4600) at sosetopt+0x830
sys_setsockopt(ffff800020ec64f8,ffff800020f85348,ffff800020f85390) at sys_setsockopt+0x215 sys/kern/uipc_syscalls.c:965
syscall(ffff800020f85410) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020f85410) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x381ca3863e0, count: 3
end of kernel
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb{1}>
reports. Insufficient info makes it difficult to find and fix bugs.
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
rw_enter: netlock locking against myself
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff822277f7) at panic+0x15c sys/kern/subr_prf.c:207
rw_enter(ffffffff825310b8,1) at rw_enter+0x518 sys/kern/kern_rwlock.c:173
solock(fffffd806bdedc90) at solock+0x5a sys/kern/uipc_socket2.c:282
panic(ffffffff822277f7) at panic+0x15c sys/kern/subr_prf.c:207
rw_enter(ffffffff825310b8,1) at rw_enter+0x518 sys/kern/kern_rwlock.c:173
soclose(fffffd806bdedc90,0) at soclose+0x2f sys/kern/uipc_socket.c:290
soo_close(fffffd806d1894d0,ffff800020ec64f8) at soo_close+0x40
fdrop(fffffd806d1894d0,ffff800020ec64f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1276
sosplice(fffffd806eb64c88,3,0,0) at sosplice+0x475
sosetopt(fffffd806eb64c88,ffff,1023,fffffd8070ca4600) at sosetopt+0x830
sys_setsockopt(ffff800020ec64f8,ffff800020f85348,ffff800020f85390) at sys_setsockopt+0x215 sys/kern/uipc_syscalls.c:965
syscall(ffff800020f85410) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800020f85410) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x381ca3863e0, count: -12
end of kernel
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff800020f84f50
rbx 0xffff800020f85000
rdx 0x8b
rcx 0x2
rax 0x1
r8 0xffffffff8178384f kprintf+0x16f
r9 0x1
r10 0x4274c828e8ea3f95
r9 0x1
r11 0xdceaf1e9746fcff5
r12 0x3000000008
r13 0xffff800020f84f60
r14 0x100
r15 0x1
rip 0xffffffff819f29d8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800020f84f40
r15 0x1
rip 0xffffffff819f29d8 db_enter+0x18
cs 0x8
rflags 0x246
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
db_enter+0x18: addq $0x8,%rsp
PROC (syz-executor.0) pid=397038 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff800020ec6768,0xffff800020ec7618
pri=32, usrpri=86, nice=20
process=0xffff800020e923f8 user=0xffff800020f80000, vmspace=0xfffffd807efff2e0
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
18043 112462 58225 0 2 0 syz-executor.1
18043 69652 58225 0 3 0x4000000 biowait syz-executor.1
39781 125522 97715 0 2 0 syz-executor.0
39781 494976 97715 0 7 0x4000000 syz-executor.0
*39781 397038 97715 0 7 0x4000000 syz-executor.0
73628 109003 0 0 3 0x14200 bored sosplice
58225 146735 37483 0 3 0x82 nanosleep syz-executor.1
97715 21782 37483 0 3 0x82 nanosleep syz-executor.0
37483 465442 86486 0 3 0x82 thrsleep syz-execprog
37483 252417 86486 0 3 0x4000082 thrsleep syz-execprog
37483 490186 86486 0 3 0x4000082 thrsleep syz-execprog
37483 162708 86486 0 3 0x4000082 thrsleep syz-execprog
37483 172525 86486 0 3 0x4000082 thrsleep syz-execprog
37483 168708 86486 0 3 0x4000082 kqread syz-execprog
37483 236979 86486 0 3 0x4000082 thrsleep syz-execprog
37483 10766 86486 0 3 0x4000082 thrsleep syz-execprog
37483 414489 86486 0 3 0x4000082 thrsleep syz-execprog
86486 18340 34670 0 3 0x10008a pause ksh
34670 275753 76058 0 3 0x92 select sshd
91621 152391 1 0 3 0x100083 ttyin getty
76058 344672 1 0 3 0x80 select sshd
92666 448396 47579 74 3 0x100092 bpf pflogd
47579 25173 1 0 3 0x80 netio pflogd
97733 482092 7739 73 3 0x100090 kqread syslogd
7739 273638 1 0 3 0x100082 netio syslogd
65424 171159 1 77 3 0x100090 poll dhclient
8263 222079 1 0 3 0x80 poll dhclient
40252 148762 0 0 3 0x14200 bored smr
77488 389073 0 0 2 0x14200 zerothread
57064 43438 0 0 3 0x14200 aiodoned aiodoned
32801 371001 0 0 3 0x14200 syncer update
12474 502643 0 0 3 0x14200 cleaner cleaner
83231 215732 0 0 3 0x14200 reaper reaper
61647 37901 0 0 3 0x14200 pgdaemon pagedaemon
60611 216570 0 0 3 0x14200 bored crynlk
62037 278992 0 0 3 0x14200 bored crypto
77208 519643 0 0 3 0x40014200 acpi0 acpi0
65680 484914 0 0 3 0x40014200 idle1
65305 365760 0 0 3 0x14200 bored softnet
75049 460865 0 0 3 0x14200 bored systqmp
8321 362535 0 0 3 0x14200 bored systq
58785 159793 0 0 3 0x40014200 bored softclock
99628 68122 0 0 3 0x40014200 idle0
1 29600 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 18043 (syz-executor.1) thread 0xffff800020ec7608 (69652)
exclusive rrwlock inode r = 0 (0xfffffd806bdeeb40)
#0 witness_lock+0x4c5 sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:311
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462
#3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140
#4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1358
#5 ffs_inode_alloc+0x1cf sys/ufs/ffs/ffs_alloc.c:392
#6 ufs_makeinode+0xaa sys/ufs/ufs/ufs_vnops.c:1830
#7 ufs_mknod+0x4e sys/ufs/ufs/ufs_vnops.c:172
#8 VOP_MKNOD+0xc6 sys/kern/vfs_vops.c:134
#9 domknodat+0x31e sys/kern/vfs_syscalls.c:1633
#10 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#10 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806bdeea30)
#0 witness_lock+0x4c5 sys/kern/subr_witness.c:1164
#1 rw_enter+0x453 sys/kern/kern_rwlock.c:311
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462
#3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603
#4 vn_lock+0x81 sys/kern/vfs_vnops.c:575
#5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419
#6 namei+0x63c sys/kern/vfs_lookup.c:249
#7 domknodat+0x92 sys/kern/vfs_syscalls.c:1585
#8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#9 Xsyscall+0x128
Process 39781 (syz-executor.0) thread 0xffff800020ec64f8 (397038)
exclusive rwlock netlock r = 0 (0xffffffff825310c8)
#0 witness_lock+0x4c5 sys/kern/subr_witness.c:1164
#1 solock+0x5a sys/kern/uipc_socket2.c:282
#2 sys_setsockopt+0x1fa sys/kern/uipc_syscalls.c:964
#3 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#3 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#4 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff826739f0)
#0 witness_lock+0x4c5 sys/kern/subr_witness.c:1164
#1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:93 [inline]
#1 syscall+0x400 sys/arch/amd64/amd64/trap.c:570
#2 Xsyscall+0x128
ddb{1}> show malloc
#0 witness_lock+0x4c5 sys/kern/subr_witness.c:1164
#1 solock+0x5a sys/kern/uipc_socket2.c:282
#2 sys_setsockopt+0x1fa sys/kern/uipc_syscalls.c:964
#3 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#3 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570
#4 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff826739f0)
#0 witness_lock+0x4c5 sys/kern/subr_witness.c:1164
#1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:93 [inline]
#1 syscall+0x400 sys/arch/amd64/amd64/trap.c:570
#2 Xsyscall+0x128
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9471 6398K 6398K 78643K 10562 0
pcb 13 8K 8K 78643K 15 0
rtable 105 3K 3K 78643K 199 0
ifaddr 44 10K 10K 78643K 45 0
counters 43 33K 33K 78643K 43 0
ioctlops 0 0K 4K 78643K 1469 0
mount 1 1K 1K 78643K 1 0
vnodes 1185 75K 75K 78643K 2305 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 1K 78643K 2 0
UFS mount 5 36K 36K 78643K 5 0
VM map 2 1K 1K 78643K 2 0
sem 2 0K 0K 78643K 2 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 196K 290K 78643K 12766 0
file desc 5 16K 24K 78643K 396 0
ACPI 1809 196K 290K 78643K 12766 0
proc 59 63K 95K 78643K 438 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 33 2K 2K 78643K 33 0
NFS daemon 1 16K 16K 78643K 1 0
ether_multi 1 0K 0K 78643K 1 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 19 95K 95K 78643K 19 0
MSDOSFS mount 1 16K 16K 78643K 1 0
exec 0 0K 1K 78643K 210 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM amap 83 20K 20K 78643K 2116 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM aobj 2 2K 2K 78643K 2 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
NDP 6 0K 0K 78643K 10 0
crypto data 1 1K 1K 78643K 1 0
temp 33 3033K 3097K 78643K 2736 0
kqueue 3 4K 4K 78643K 3 0
SYN cache 2 16K 16K 78643K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 6 0 0 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 19 0 17 1 0 1 1 0 8 0
rtentry 112 45 0 1 2 0 2 2 0 8 0
unpcb 120 29 0 19 1 0 1 1 0 8 0
syncache 264 5 0 5 2 2 0 1 0 8 0
tcpcb 544 8 0 5 1 0 1 1 0 8 0
inpcb 280 1485 0 1476 1 0 1 1 0 8 0
nd6 48 6 0 0 1 0 1 1 0 8 0
pfosfp 40 846 0 423 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstitem 24 11 0 2 1 0 1 1 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstkey 112 11 0 2 1 0 1 1 0 8 0
pfstate 328 11 0 2 1 0 1 1 0 8 0
pfrule 1360 21 0 16 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 188 0 0 12 0 12 12 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_table 32 189 0 0 2 0 2 2 0 8 0
art_node 16 44 0 4 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 2567 0 1157 46 0 46 46 0 8 0
ffsino 272 2567 0 1157 95 0 95 95 0 8 0
nchpl 144 3150 0 1530 61 0 61 61 0 8 0
uvmvnodes 72 3279 0 0 60 0 60 60 0 8 0
vnodes 208 3279 0 0 173 0 173 173 0 8 0
namei 1024 7847 0 7846 2 1 1 1 0 8 0
percpumem 16 32 0 0 1 0 1 1 0 8 0
scxspl 192 7928 0 7927 9 8 1 7 0 8 0
plimitpl 152 16 0 8 1 0 1 1 0 8 0
sigapl 424 617 0 584 4 0 4 4 0 8 0
futexpl 56 2498 0 2498 1 0 1 1 0 8 1
knotepl 112 51 0 34 1 0 1 1 0 8 0
kqueuepl 144 2 0 0 1 0 1 1 0 8 0
pipelkpl 48 78 0 68 2 1 1 1 0 8 0
pipepl 120 156 0 137 2 1 1 1 0 8 0
fdescpl 496 601 0 584 3 0 3 3 0 8 0
filepl 152 3664 0 3593 3 0 3 3 0 8 0
lockfpl 104 5 0 4 1 0 1 1 0 8 0
lockfspl 48 3 0 2 1 0 1 1 0 8 0
sessionpl 112 20 0 9 1 0 1 1 0 8 0
pgrppl 48 20 0 9 1 0 1 1 0 8 0
ucredpl 96 52 0 43 1 0 1 1 0 8 0
zombiepl 144 584 0 584 2 1 1 1 0 8 1
processpl 984 617 0 584 5 0 5 5 0 8 0
procpl 624 1371 0 1327 4 0 4 4 0 8 0
sosppl 128 721 0 719 1 0 1 1 0 8 0
sockpl 400 1533 0 1512 3 0 3 3 0 8 0
mcl4k 4096 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 56 0 0 7 0 7 7 0 8 0
mtagpl 80 1 0 0 1 0 1 1 0 8 0
mbufpl 256 145 0 0 8 0 8 8 0 8 0
bufpl 280 4115 0 174 282 0 282 282 0 8 0
anonpl 16 43273 0 41129 15 2 13 13 0 124 4
amapchunkpl 152 2907 0 2831 6 0 6 6 0 158 2
amappl16 192 1867 0 1792 4 0 4 4 0 8 0
amappl15 184 1 0 1 1 1 0 1 0 8 0
amappl14 176 7 0 5 2 1 1 1 0 8 0
amappl13 168 26 0 25 2 1 1 1 0 8 0
amappl12 160 191 0 187 2 1 1 1 0 8 0
amappl11 152 88 0 68 2 0 2 2 0 8 1
amappl10 144 15 0 13 1 0 1 1 0 8 0
amappl9 136 235 0 232 1 0 1 1 0 8 0
amappl8 128 290 0 280 1 0 1 1 0 8 0
amappl7 120 129 0 117 1 0 1 1 0 8 0
amappl6 112 27 0 21 1 0 1 1 0 8 0
amappl5 104 676 0 659 1 0 1 1 0 8 0
amappl4 96 529 0 500 2 0 2 2 0 8 1
amappl3 88 111 0 106 1 0 1 1 0 8 0
amappl2 80 3870 0 3794 4 1 3 3 0 8 1
amappl1 72 23171 0 22708 26 8 18 20 0 8 8
amappl 80 1612 0 1577 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 18 0 17 1 0 1 1 0 8 0
aobjpl 64 1 0 0 1 0 1 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 18 0 17 1 0 1 1 0 8 0
uaddrrnd 24 601 0 584 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 601 0 584 1 0 1 1 0 8 0
vmmpekpl 168 9206 0 9182 2 0 2 2 0 8 0
vmmpepl 168 63224 0 62070 94 14 80 80 0 357 29
vmsppl 368 600 0 584 2 0 2 2 0 8 0
pdppl 4096 1210 0 1168 6 0 6 6 0 8 0
pvpl 32 168813 0 164099 121 6 115 115 0 265 76
pmappl 232 600 0 584 2 0 2 2 0 8 1
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 149 0 4 5 0 5 5 0 8 0
ddb{1}>
syzbot
Apr 11, 2020, 3:56:03 PM4/11/20
to an...@basename.se, syzkaller-o...@googlegroups.com
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger crash:
Reported-and-tested-by: syzbot+7c805a...@syzkaller.appspotmail.com
Tested on:
commit: c53d7762 XXX potential fix
git tree: https://github.com/mptre/openbsd-src sosplice
Note: testing is done by a robot and is best-effort only.
syzbot has tested the proposed patch and the reproducer did not trigger crash:
Reported-and-tested-by: syzbot+7c805a...@syzkaller.appspotmail.com
Tested on:
commit: c53d7762 XXX potential fix
git tree: https://github.com/mptre/openbsd-src sosplice
kernel config: https://syzkaller.appspot.com/x/.config?x=bf87b6915a88cd0d
dashboard link: https://syzkaller.appspot.com/bug?extid=7c805a09545d997b924d
compiler:
dashboard link: https://syzkaller.appspot.com/bug?extid=7c805a09545d997b924d
Note: testing is done by a robot and is best-effort only.
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