protection_fault: malloc (3)
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syzbot
Jul 13, 2026, 9:05:30 AM (5 days ago) Jul 13
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 663dfdac4969 fix "ifconfig vebX -tagged ifX"
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1669b432580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=a1502e2bc577116c330b
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/115bdf3c33a1/disk-663dfdac.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/ce5e57f00465/bsd-663dfdac.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/f8bc0566c8b1/kernel-663dfdac.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+a1502e...@syzkaller.appspotmail.com
kernel: protection fault trap, code=0
Stopped at malloc+0x855: movq 0x8(%rbx),%r14
ddb{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
the kernel did not panic
ddb{0}> trace
malloc(10,7f,1) at malloc+0x855 sys/kern/kern_malloc.c:294
spec_open_clone(ffff800037bb0eb8) at spec_open_clone+0x333 sys/kern/spec_vnops.c:-1
spec_open(ffff800037bb0eb8) at spec_open+0x319 sys/kern/spec_vnops.c:148
VOP_OPEN(fffffc8070c21360,3,fffffc80097fd820,ffff80003c4087f0) at VOP_OPEN+0x8b sys/kern/vfs_vops.c:138
vn_open(ffff800037bb1108,3,0) at vn_open+0x7a5 sys/kern/vfs_vnops.c:183
doopenat(ffff80003c4087f0,ffffff9c,3b7e5ee45d,2,0,0,596ea06197f9b5ae) at doopenat+0x35b sys/kern/vfs_syscalls.c:1163
sys_open(ffff80003c4087f0,ffff800037bb13c0,ffff800037bb1310) at sys_open+0x59 sys/kern/vfs_syscalls.c:1065
syscall(ffff800037bb13c0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800037bb13c0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x737f0335c3a0, count: -9
ddb{0}> show registers
rdi 0x713fc32d89e4f3be
rsi 0xaaee __ALIGN_SIZE+0x9aee
rbp 0xffff800037bb0db0
rbx 0x713fc32d89e45950
rdx 0
rcx 0xffff80003c4087f0
rax 0xffffffff83956ff0 cpu_info_full_primary+0x1ff0
r8 0x40
r9 0xffffffffffffffff
r10 0x6c066103f47ec856
r11 0x9cb5365aab42a6c0
r12 0xaaee __ALIGN_SIZE+0x9aee
r13 0xffffffff83ad00f0 kmemstats+0x1fc0
r14 0xa30c333 __kernel_phys_end+0x670c333
r15 0x713fc32d89e4f3be
rip 0xffffffff82ddb7a5 malloc+0x855
cs 0x8
rflags 0x10206 __ALIGN_SIZE+0xf206
rsp 0xffff800037bb0cf0
ss 0x10
malloc+0x855: movq 0x8(%rbx),%r14
ddb{0}> show proc
PROC (syz-executor) tid=204157 pid=18632 tcnt=1 stat=onproc
flags process=2<EXEC> proc=0
runpri=72, usrpri=72, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80003c408fb8,0xffff800045fef780
process=0xffff80003abd5d00 user=0xffff800037bac000, vmspace=0xfffffc8072805028
estcpu=22, cpticks=5, pctcpu=0.0, user=0, sys=5, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
84067 265628 75476 32767 2 0x10 syz-executor
21987 402364 99625 32767 2 0x10 syz-executor
21987 88197 99625 32767 3 0x4000090 fsleep syz-executor
*18632 204157 56497 0 7 0x2 syz-executor
19652 351359 55651 32767 7 0x10 syz-executor
45370 329923 45159 32767 2 0x10 syz-executor
99625 14754 75305 32767 3 0x90 nanoslp syz-executor
76550 958 19086 32767 3 0x10 biowait syz-executor
43705 522118 9254 32767 3 0x90 nanoslp syz-executor
75476 385648 25138 32767 3 0x90 nanoslp syz-executor
93989 421345 76917 32767 3 0x90 nanoslp syz-executor
55651 314290 56497 0 3 0x82 wait syz-executor
45159 485120 56497 0 3 0x82 wait syz-executor
75305 222858 56497 0 3 0x82 wait syz-executor
9254 249308 56497 0 3 0x82 wait syz-executor
19086 405119 56497 0 3 0x82 wait syz-executor
76917 441534 56497 0 3 0x82 wait syz-executor
25138 124683 56497 0 3 0x82 wait syz-executor
56497 151620 42452 0 3 0x82 kqread syz-executor
42452 251612 97802 0 3 0x10008a sigsusp ksh
97802 88318 56491 0 3 0x98 kqread sshd-session
56491 190236 74943 0 3 0x92 kqread sshd-session
22738 453502 1 0 3 0x100083 ttyin getty
74943 312428 1 0 3 0x88 kqread sshd
23160 196355 6106 73 3 0x1100090 kqread syslogd
6106 275001 1 0 3 0x100082 sbwait syslogd
23428 255696 1 0 3 0x100080 kqread resolvd
74533 123597 92577 77 3 0x100092 kqread dhcpleased
10488 293043 92577 77 3 0x100092 kqread dhcpleased
92577 92030 1 0 3 0x80 kqread dhcpleased
65561 55882 0 0 3 0x14200 bored smr
69117 392497 0 0 2 0x14200 zerothread
4705 163070 0 0 3 0x14200 aiodoned aiodoned
38447 451509 0 0 3 0x14200 syncer update
18567 434841 0 0 3 0x14200 cleaner cleaner
20759 211367 0 0 2 0x14200 reaper
40422 82162 0 0 3 0x14200 pgdaemon pagedaemon
90232 321720 0 0 3 0x14200 bored viomb
4600 210909 0 0 3 0x40014200 acpi0 acpi0
28072 32603 0 0 3 0x40014200 idle1
89731 522105 0 0 3 0x14200 bored softnet1
89813 153480 0 0 3 0x14200 bored softnet0
79192 515560 0 0 3 0x14200 bored systqmp
66336 42303 0 0 3 0x14200 bored systq
97184 332721 0 0 3 0x14200 tmoslp softclockmp
66442 179411 0 0 3 0x40014200 tmoslp softclock
55615 518481 0 0 3 0x40014200 idle0
1 180711 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex /syzkaller/managers/setuid/kernel/sys/kern/kern_malloc.c:96 r = 0 (0xffffffff839b96e8)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487
#2 malloc+0x2ef sys/kern/kern_malloc.c:200
#3 spec_open_clone+0x333 sys/kern/spec_vnops.c:-1
#4 spec_open+0x319 sys/kern/spec_vnops.c:148
#5 VOP_OPEN+0x8b sys/kern/vfs_vops.c:138
#6 vn_open+0x7a5 sys/kern/vfs_vnops.c:183
#7 doopenat+0x35b sys/kern/vfs_syscalls.c:1163
#8 sys_open+0x59 sys/kern/vfs_syscalls.c:1065
#9 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#9 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#10 Xsyscall+0x128
Process 18632 (syz-executor) thread 0xffff80003c4087f0 (204157)
exclusive rrwlock inode r = 0 (0xfffffc8070c1e6d0)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 spec_open_clone+0x290 sys/kern/spec_vnops.c:725
#6 spec_open+0x319 sys/kern/spec_vnops.c:148
#7 VOP_OPEN+0x8b sys/kern/vfs_vops.c:138
#8 vn_open+0x7a5 sys/kern/vfs_vnops.c:183
#9 doopenat+0x35b sys/kern/vfs_syscalls.c:1163
#10 sys_open+0x59 sys/kern/vfs_syscalls.c:1065
#11 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#11 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#12 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839efcc0)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 doopenat+0x340 sys/kern/vfs_syscalls.c:1163
#2 sys_open+0x59 sys/kern/vfs_syscalls.c:1065
#3 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#3 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#4 Xsyscall+0x128
exclusive mutex /syzkaller/managers/setuid/kernel/sys/kern/kern_malloc.c:96 r = 0 (0xffffffff839b96e8)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487
#2 malloc+0x2ef sys/kern/kern_malloc.c:200
#3 spec_open_clone+0x333 sys/kern/spec_vnops.c:-1
#4 spec_open+0x319 sys/kern/spec_vnops.c:148
#5 VOP_OPEN+0x8b sys/kern/vfs_vops.c:138
#6 vn_open+0x7a5 sys/kern/vfs_vnops.c:183
#7 doopenat+0x35b sys/kern/vfs_syscalls.c:1163
#8 sys_open+0x59 sys/kern/vfs_syscalls.c:1065
#9 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#9 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#10 Xsyscall+0x128
Process 19652 (syz-executor) thread 0xffff800037bb94e0 (351359)
exclusive rrwlock inode r = 0 (0xfffffc806cf41688)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 vget+0x2a2 sys/kern/vfs_subr.c:692
#6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203
#8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x963 sys/kern/vfs_lookup.c:580
#11 namei+0x7c5 sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807
#13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffc806d7868d0)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431
#6 namei+0x7c5 sys/kern/vfs_lookup.c:250
#7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807
#8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#9 Xsyscall+0x128
Process 45370 (syz-executor) thread 0xffff800045fef4d8 (329923)
exclusive rrwlock inode r = 0 (0xfffffc806cf418d8)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 vget+0x2a2 sys/kern/vfs_subr.c:692
#6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203
#8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x963 sys/kern/vfs_lookup.c:580
#11 namei+0x7c5 sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807
#13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffc806d4b6e90)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431
#6 namei+0x7c5 sys/kern/vfs_lookup.c:250
#7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807
#8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#9 Xsyscall+0x128
Process 76550 (syz-executor) thread 0xffff800045fee548 (958)
exclusive rrwlock inode r = 0 (0xfffffc806766d690)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline]
#4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:150
#5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232
#6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393
#7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112
#8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394
#9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3063
#10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffc806d4b60b0)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431
#6 namei+0x7c5 sys/kern/vfs_lookup.c:250
#7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3048
#8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#9 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11048 12016K 12034K 166960K 12142 0
pcb 17 12K 12K 166960K 17 0
rtable 215 6K 6K 166960K 351 0
pf 29 16K 16K 166960K 31 0
ifaddr 38 6K 7K 166960K 44 0
ifgroup 46 2K 2K 166960K 50 0
sysctl 3 1K 9K 166960K 7 0
counters 68 36K 37K 166960K 70 0
ioctlops 0 0K 4K 166960K 63 0
iov 0 0K 9K 166960K 6 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1287 81K 81K 166960K 1426 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 4 0
VM map 2 1K 1K 166960K 2 0
sem 6 0K 0K 166960K 6 0
dirhash 12 2K 2K 166960K 15 0
ACPI 1734 201K 291K 166960K 11964 0
file desc 20 73K 121K 166960K 238 0
sigio 0 0K 0K 166960K 2 0
proc 58 99K 131K 166960K 506 0
subproc 69 4K 4K 166960K 141 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 9 0
in_multi 88 6K 7K 166960K 101 0
ether_multi 1 0K 0K 166960K 1 0
mrt 0 0K 0K 166960K 7 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 67 307K 307K 166960K 67 0
exec 0 0K 1K 166960K 366 0
fusefs mount 1 32K 32K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 202 166K 177K 166960K 3571 0
UVM aobj 7 2K 2K 166960K 7 0
pinsyscall 41 82K 114K 166960K 1308 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 5 0
NDP 10 0K 2K 166960K 27 0
temp 37 9118K 9130K 166960K 4002 0
kqueue 13 20K 26K 166960K 39 0
SYN cache 2 16K 16K 166960K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 28 0 0 1 0 1 1 0 8 0
rtpcb 120 40 0 37 1 0 1 1 0 8 0
rtentry 176 111 0 12 5 0 5 5 0 8 0
unpcb 144 58 0 43 1 0 1 1 0 8 0
syncache 336 5 0 5 1 0 1 1 0 8 1
tcpcb 736 36 0 32 2 0 2 2 0 8 1
arp 136 18 0 2 1 0 1 1 0 8 0
inpcb 328 116 0 109 2 0 2 2 0 8 1
nd6 152 24 0 3 1 0 1 1 0 8 0
kcovpl 48 15 0 8 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 453 0 44 29 0 29 29 0 8 2
art_table 40 454 0 44 5 0 5 5 0 8 0
art_node 32 111 0 21 1 0 1 1 0 8 0
sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1
semapl 72 4 0 0 1 0 1 1 0 8 0
shmpl 112 4 0 0 1 0 1 1 0 8 0
dirhash 1024 19 0 2 3 0 3 3 0 8 0
dino2pl 256 1652 0 182 93 0 93 93 0 8 0
ffsino 296 1652 0 182 114 0 114 114 0 8 0
nchpl 144 1942 0 246 64 0 64 64 0 8 0
vnodes 216 1802 0 0 101 0 101 101 0 8 0
namei 1024 5872 0 5871 2 0 2 2 0 8 1
percpumem 16 51 0 1 1 0 1 1 0 8 0
kstatmem 264 25 0 2 2 0 2 2 0 8 0
scxspl 216 6839 0 6838 4 3 1 3 1 8 0
plimitpl 152 64 0 41 2 0 2 2 0 8 1
sigapl 424 511 0 462 7 0 7 7 0 8 0
knotepl 120 350 0 0 11 0 11 11 0 8 0
kqueuepl 224 37 0 28 1 0 1 1 0 8 0
pipepl 344 154 0 127 4 0 4 4 0 8 0
fdescpl 528 495 0 463 3 0 3 3 0 8 0
filepl 160 1932 0 1731 10 0 10 10 0 8 1
lockfpl 104 29 0 27 1 0 1 1 0 8 0
lockfspl 48 10 0 8 1 0 1 1 0 8 0
sessionpl 144 32 0 17 1 0 1 1 0 8 0
pgrppl 48 48 0 25 1 0 1 1 0 8 0
ucredpl 104 218 0 200 1 0 1 1 0 8 0
zombiepl 144 464 0 462 1 0 1 1 0 8 0
processpl 1232 511 0 462 5 0 5 5 0 8 0
procpl 664 621 0 571 6 0 6 6 0 8 0
sockpl 752 216 0 191 5 0 5 5 0 8 2
mcl64k 65536 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 118 0 0 15 0 15 15 0 8 0
mcl2k 2048 17 0 0 3 0 3 3 0 8 0
mextrefs 64 17 0 0 1 0 1 1 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 188 0 0 12 0 12 12 0 8 0
bufpl 272 2485 0 102 159 0 159 159 0 8 0
anonpl 32 5271 0 0 43 0 43 43 0 247 0
amapchunkpl 152 10165 0 9771 27 0 27 27 0 158 6
amappl16 200 1764 0 1747 5 3 2 5 0 8 0
amappl15 192 2 0 2 1 1 0 1 0 8 0
amappl14 184 494 0 492 1 0 1 1 0 8 0
amappl13 176 113 0 103 1 0 1 1 0 8 0
amappl12 168 726 0 696 2 0 2 2 0 8 0
amappl11 160 5 0 5 1 1 0 1 0 8 0
amappl10 152 59 0 49 1 0 1 1 0 8 0
amappl9 144 276 0 275 2 1 1 1 0 8 0
amappl8 136 92 0 91 1 0 1 1 0 8 0
amappl7 128 169 0 158 1 0 1 1 0 8 0
amappl6 120 151 0 150 1 0 1 1 0 8 0
amappl5 112 167 0 160 1 0 1 1 0 8 0
amappl4 104 259 0 242 1 0 1 1 0 8 0
amappl3 96 1835 0 1741 5 1 4 4 0 8 0
amappl2 88 504 0 451 2 0 2 2 0 8 0
amappl1 80 10414 0 9860 15 0 15 15 0 8 1
amappl 88 2896 0 2758 5 0 5 5 0 92 0
uvmvnodes 80 97 0 0 2 0 2 2 0 8 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 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
aobjpl 72 6 0 0 1 0 1 1 0 8 0
uaddrrnd 24 495 0 463 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 495 0 463 1 0 1 1 0 8 0
vmmpekpl 168 5975 0 5931 3 0 3 3 0 8 0
vmmpepl 168 40672 0 38906 93 0 93 93 0 357 6
vmsppl 488 494 0 462 7 1 6 6 0 8 0
rwobjpl 80 14776 0 13884 23 0 23 23 0 8 0
pdppl 4096 997 0 924 105 24 81 95 0 8 8
pvpl 32 11305 0 0 92 0 92 92 0 265 0
pmappl 256 494 0 462 4 1 3 3 0 8 0
extentpl 40 46 0 28 1 0 1 1 0 8 0
phpool 112 434 0 27 12 0 12 12 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
malloc(10,7f,1) at malloc+0x855 sys/kern/kern_malloc.c:294
spec_open_clone(ffff800037bb0eb8) at spec_open_clone+0x333 sys/kern/spec_vnops.c:-1
spec_open(ffff800037bb0eb8) at spec_open+0x319 sys/kern/spec_vnops.c:148
VOP_OPEN(fffffc8070c21360,3,fffffc80097fd820,ffff80003c4087f0) at VOP_OPEN+0x8b sys/kern/vfs_vops.c:138
vn_open(ffff800037bb1108,3,0) at vn_open+0x7a5 sys/kern/vfs_vnops.c:183
doopenat(ffff80003c4087f0,ffffff9c,3b7e5ee45d,2,0,0,596ea06197f9b5ae) at doopenat+0x35b sys/kern/vfs_syscalls.c:1163
sys_open(ffff80003c4087f0,ffff800037bb13c0,ffff800037bb1310) at sys_open+0x59 sys/kern/vfs_syscalls.c:1065
syscall(ffff800037bb13c0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800037bb13c0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x737f0335c3a0, count: -9
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
ddb{1}> trace
x86_ipi_db(ffff80002999dff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff839ef4c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff839ef4c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173
__mp_acquire_count(ffffffff839ef4c0,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1
sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:369
getblk(fffffc800b209360,65560,4000,0,ffffffffffffffff) at getblk+0x197 sys/kern/vfs_bio.c:882
bread(fffffc800b209360,65560,4000,ffff800031f855b0) at bread+0x45 bio_doread sys/kern/vfs_bio.c:295 [inline]
bread(fffffc800b209360,65560,4000,ffff800031f855b0) at bread+0x45 sys/kern/vfs_bio.c:340
ffs_update(fffffc806cf415e8,1) at ffs_update+0x198 sys/ufs/ffs/ffs_inode.c:91
ffs_truncate(fffffc806cf415e8,0,4,fffffc80097fd750) at ffs_truncate+0xc9b sys/ufs/ffs/ffs_inode.c:-1
ufs_rmdir(ffff800031f85880) at ufs_rmdir+0x2f1 sys/ufs/ufs/ufs_vnops.c:1265
VOP_RMDIR(fffffc806d749e90,fffffc8067868628,ffff800031f85958) at VOP_RMDIR+0x192 sys/kern/vfs_vops.c:413
dounlinkat(ffff800037bb94e0,ffffff9c,7b3a93961130,8) at dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1840
syscall(ffff800031f85ad0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800031f85ad0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7b3a93961120, count: -15
---
This report 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.
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If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: 663dfdac4969 fix "ifconfig vebX -tagged ifX"
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1669b432580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=a1502e2bc577116c330b
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/115bdf3c33a1/disk-663dfdac.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/ce5e57f00465/bsd-663dfdac.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/f8bc0566c8b1/kernel-663dfdac.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+a1502e...@syzkaller.appspotmail.com
kernel: protection fault trap, code=0
Stopped at malloc+0x855: movq 0x8(%rbx),%r14
ddb{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
the kernel did not panic
ddb{0}> trace
malloc(10,7f,1) at malloc+0x855 sys/kern/kern_malloc.c:294
spec_open_clone(ffff800037bb0eb8) at spec_open_clone+0x333 sys/kern/spec_vnops.c:-1
spec_open(ffff800037bb0eb8) at spec_open+0x319 sys/kern/spec_vnops.c:148
VOP_OPEN(fffffc8070c21360,3,fffffc80097fd820,ffff80003c4087f0) at VOP_OPEN+0x8b sys/kern/vfs_vops.c:138
vn_open(ffff800037bb1108,3,0) at vn_open+0x7a5 sys/kern/vfs_vnops.c:183
doopenat(ffff80003c4087f0,ffffff9c,3b7e5ee45d,2,0,0,596ea06197f9b5ae) at doopenat+0x35b sys/kern/vfs_syscalls.c:1163
sys_open(ffff80003c4087f0,ffff800037bb13c0,ffff800037bb1310) at sys_open+0x59 sys/kern/vfs_syscalls.c:1065
syscall(ffff800037bb13c0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800037bb13c0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x737f0335c3a0, count: -9
ddb{0}> show registers
rdi 0x713fc32d89e4f3be
rsi 0xaaee __ALIGN_SIZE+0x9aee
rbp 0xffff800037bb0db0
rbx 0x713fc32d89e45950
rdx 0
rcx 0xffff80003c4087f0
rax 0xffffffff83956ff0 cpu_info_full_primary+0x1ff0
r8 0x40
r9 0xffffffffffffffff
r10 0x6c066103f47ec856
r11 0x9cb5365aab42a6c0
r12 0xaaee __ALIGN_SIZE+0x9aee
r13 0xffffffff83ad00f0 kmemstats+0x1fc0
r14 0xa30c333 __kernel_phys_end+0x670c333
r15 0x713fc32d89e4f3be
rip 0xffffffff82ddb7a5 malloc+0x855
cs 0x8
rflags 0x10206 __ALIGN_SIZE+0xf206
rsp 0xffff800037bb0cf0
ss 0x10
malloc+0x855: movq 0x8(%rbx),%r14
ddb{0}> show proc
PROC (syz-executor) tid=204157 pid=18632 tcnt=1 stat=onproc
flags process=2<EXEC> proc=0
runpri=72, usrpri=72, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80003c408fb8,0xffff800045fef780
process=0xffff80003abd5d00 user=0xffff800037bac000, vmspace=0xfffffc8072805028
estcpu=22, cpticks=5, pctcpu=0.0, user=0, sys=5, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
84067 265628 75476 32767 2 0x10 syz-executor
21987 402364 99625 32767 2 0x10 syz-executor
21987 88197 99625 32767 3 0x4000090 fsleep syz-executor
*18632 204157 56497 0 7 0x2 syz-executor
19652 351359 55651 32767 7 0x10 syz-executor
45370 329923 45159 32767 2 0x10 syz-executor
99625 14754 75305 32767 3 0x90 nanoslp syz-executor
76550 958 19086 32767 3 0x10 biowait syz-executor
43705 522118 9254 32767 3 0x90 nanoslp syz-executor
75476 385648 25138 32767 3 0x90 nanoslp syz-executor
93989 421345 76917 32767 3 0x90 nanoslp syz-executor
55651 314290 56497 0 3 0x82 wait syz-executor
45159 485120 56497 0 3 0x82 wait syz-executor
75305 222858 56497 0 3 0x82 wait syz-executor
9254 249308 56497 0 3 0x82 wait syz-executor
19086 405119 56497 0 3 0x82 wait syz-executor
76917 441534 56497 0 3 0x82 wait syz-executor
25138 124683 56497 0 3 0x82 wait syz-executor
56497 151620 42452 0 3 0x82 kqread syz-executor
42452 251612 97802 0 3 0x10008a sigsusp ksh
97802 88318 56491 0 3 0x98 kqread sshd-session
56491 190236 74943 0 3 0x92 kqread sshd-session
22738 453502 1 0 3 0x100083 ttyin getty
74943 312428 1 0 3 0x88 kqread sshd
23160 196355 6106 73 3 0x1100090 kqread syslogd
6106 275001 1 0 3 0x100082 sbwait syslogd
23428 255696 1 0 3 0x100080 kqread resolvd
74533 123597 92577 77 3 0x100092 kqread dhcpleased
10488 293043 92577 77 3 0x100092 kqread dhcpleased
92577 92030 1 0 3 0x80 kqread dhcpleased
65561 55882 0 0 3 0x14200 bored smr
69117 392497 0 0 2 0x14200 zerothread
4705 163070 0 0 3 0x14200 aiodoned aiodoned
38447 451509 0 0 3 0x14200 syncer update
18567 434841 0 0 3 0x14200 cleaner cleaner
20759 211367 0 0 2 0x14200 reaper
40422 82162 0 0 3 0x14200 pgdaemon pagedaemon
90232 321720 0 0 3 0x14200 bored viomb
4600 210909 0 0 3 0x40014200 acpi0 acpi0
28072 32603 0 0 3 0x40014200 idle1
89731 522105 0 0 3 0x14200 bored softnet1
89813 153480 0 0 3 0x14200 bored softnet0
79192 515560 0 0 3 0x14200 bored systqmp
66336 42303 0 0 3 0x14200 bored systq
97184 332721 0 0 3 0x14200 tmoslp softclockmp
66442 179411 0 0 3 0x40014200 tmoslp softclock
55615 518481 0 0 3 0x40014200 idle0
1 180711 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex /syzkaller/managers/setuid/kernel/sys/kern/kern_malloc.c:96 r = 0 (0xffffffff839b96e8)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487
#2 malloc+0x2ef sys/kern/kern_malloc.c:200
#3 spec_open_clone+0x333 sys/kern/spec_vnops.c:-1
#4 spec_open+0x319 sys/kern/spec_vnops.c:148
#5 VOP_OPEN+0x8b sys/kern/vfs_vops.c:138
#6 vn_open+0x7a5 sys/kern/vfs_vnops.c:183
#7 doopenat+0x35b sys/kern/vfs_syscalls.c:1163
#8 sys_open+0x59 sys/kern/vfs_syscalls.c:1065
#9 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#9 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#10 Xsyscall+0x128
Process 18632 (syz-executor) thread 0xffff80003c4087f0 (204157)
exclusive rrwlock inode r = 0 (0xfffffc8070c1e6d0)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 spec_open_clone+0x290 sys/kern/spec_vnops.c:725
#6 spec_open+0x319 sys/kern/spec_vnops.c:148
#7 VOP_OPEN+0x8b sys/kern/vfs_vops.c:138
#8 vn_open+0x7a5 sys/kern/vfs_vnops.c:183
#9 doopenat+0x35b sys/kern/vfs_syscalls.c:1163
#10 sys_open+0x59 sys/kern/vfs_syscalls.c:1065
#11 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#11 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#12 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839efcc0)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 doopenat+0x340 sys/kern/vfs_syscalls.c:1163
#2 sys_open+0x59 sys/kern/vfs_syscalls.c:1065
#3 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#3 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#4 Xsyscall+0x128
exclusive mutex /syzkaller/managers/setuid/kernel/sys/kern/kern_malloc.c:96 r = 0 (0xffffffff839b96e8)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487
#2 malloc+0x2ef sys/kern/kern_malloc.c:200
#3 spec_open_clone+0x333 sys/kern/spec_vnops.c:-1
#4 spec_open+0x319 sys/kern/spec_vnops.c:148
#5 VOP_OPEN+0x8b sys/kern/vfs_vops.c:138
#6 vn_open+0x7a5 sys/kern/vfs_vnops.c:183
#7 doopenat+0x35b sys/kern/vfs_syscalls.c:1163
#8 sys_open+0x59 sys/kern/vfs_syscalls.c:1065
#9 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#9 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#10 Xsyscall+0x128
Process 19652 (syz-executor) thread 0xffff800037bb94e0 (351359)
exclusive rrwlock inode r = 0 (0xfffffc806cf41688)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 vget+0x2a2 sys/kern/vfs_subr.c:692
#6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203
#8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x963 sys/kern/vfs_lookup.c:580
#11 namei+0x7c5 sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807
#13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffc806d7868d0)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431
#6 namei+0x7c5 sys/kern/vfs_lookup.c:250
#7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807
#8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#9 Xsyscall+0x128
Process 45370 (syz-executor) thread 0xffff800045fef4d8 (329923)
exclusive rrwlock inode r = 0 (0xfffffc806cf418d8)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 vget+0x2a2 sys/kern/vfs_subr.c:692
#6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203
#8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x963 sys/kern/vfs_lookup.c:580
#11 namei+0x7c5 sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807
#13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffc806d4b6e90)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431
#6 namei+0x7c5 sys/kern/vfs_lookup.c:250
#7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807
#8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#9 Xsyscall+0x128
Process 76550 (syz-executor) thread 0xffff800045fee548 (958)
exclusive rrwlock inode r = 0 (0xfffffc806766d690)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline]
#4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:150
#5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232
#6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393
#7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112
#8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394
#9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3063
#10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffc806d4b60b0)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 vfs_lookup+0x12b sys/kern/vfs_lookup.c:431
#6 namei+0x7c5 sys/kern/vfs_lookup.c:250
#7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3048
#8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#9 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11048 12016K 12034K 166960K 12142 0
pcb 17 12K 12K 166960K 17 0
rtable 215 6K 6K 166960K 351 0
pf 29 16K 16K 166960K 31 0
ifaddr 38 6K 7K 166960K 44 0
ifgroup 46 2K 2K 166960K 50 0
sysctl 3 1K 9K 166960K 7 0
counters 68 36K 37K 166960K 70 0
ioctlops 0 0K 4K 166960K 63 0
iov 0 0K 9K 166960K 6 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1287 81K 81K 166960K 1426 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 4 0
VM map 2 1K 1K 166960K 2 0
sem 6 0K 0K 166960K 6 0
dirhash 12 2K 2K 166960K 15 0
ACPI 1734 201K 291K 166960K 11964 0
file desc 20 73K 121K 166960K 238 0
sigio 0 0K 0K 166960K 2 0
proc 58 99K 131K 166960K 506 0
subproc 69 4K 4K 166960K 141 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 9 0
in_multi 88 6K 7K 166960K 101 0
ether_multi 1 0K 0K 166960K 1 0
mrt 0 0K 0K 166960K 7 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 67 307K 307K 166960K 67 0
exec 0 0K 1K 166960K 366 0
fusefs mount 1 32K 32K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 202 166K 177K 166960K 3571 0
UVM aobj 7 2K 2K 166960K 7 0
pinsyscall 41 82K 114K 166960K 1308 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 5 0
NDP 10 0K 2K 166960K 27 0
temp 37 9118K 9130K 166960K 4002 0
kqueue 13 20K 26K 166960K 39 0
SYN cache 2 16K 16K 166960K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 28 0 0 1 0 1 1 0 8 0
rtpcb 120 40 0 37 1 0 1 1 0 8 0
rtentry 176 111 0 12 5 0 5 5 0 8 0
unpcb 144 58 0 43 1 0 1 1 0 8 0
syncache 336 5 0 5 1 0 1 1 0 8 1
tcpcb 736 36 0 32 2 0 2 2 0 8 1
arp 136 18 0 2 1 0 1 1 0 8 0
inpcb 328 116 0 109 2 0 2 2 0 8 1
nd6 152 24 0 3 1 0 1 1 0 8 0
kcovpl 48 15 0 8 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 453 0 44 29 0 29 29 0 8 2
art_table 40 454 0 44 5 0 5 5 0 8 0
art_node 32 111 0 21 1 0 1 1 0 8 0
sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1
semapl 72 4 0 0 1 0 1 1 0 8 0
shmpl 112 4 0 0 1 0 1 1 0 8 0
dirhash 1024 19 0 2 3 0 3 3 0 8 0
dino2pl 256 1652 0 182 93 0 93 93 0 8 0
ffsino 296 1652 0 182 114 0 114 114 0 8 0
nchpl 144 1942 0 246 64 0 64 64 0 8 0
vnodes 216 1802 0 0 101 0 101 101 0 8 0
namei 1024 5872 0 5871 2 0 2 2 0 8 1
percpumem 16 51 0 1 1 0 1 1 0 8 0
kstatmem 264 25 0 2 2 0 2 2 0 8 0
scxspl 216 6839 0 6838 4 3 1 3 1 8 0
plimitpl 152 64 0 41 2 0 2 2 0 8 1
sigapl 424 511 0 462 7 0 7 7 0 8 0
knotepl 120 350 0 0 11 0 11 11 0 8 0
kqueuepl 224 37 0 28 1 0 1 1 0 8 0
pipepl 344 154 0 127 4 0 4 4 0 8 0
fdescpl 528 495 0 463 3 0 3 3 0 8 0
filepl 160 1932 0 1731 10 0 10 10 0 8 1
lockfpl 104 29 0 27 1 0 1 1 0 8 0
lockfspl 48 10 0 8 1 0 1 1 0 8 0
sessionpl 144 32 0 17 1 0 1 1 0 8 0
pgrppl 48 48 0 25 1 0 1 1 0 8 0
ucredpl 104 218 0 200 1 0 1 1 0 8 0
zombiepl 144 464 0 462 1 0 1 1 0 8 0
processpl 1232 511 0 462 5 0 5 5 0 8 0
procpl 664 621 0 571 6 0 6 6 0 8 0
sockpl 752 216 0 191 5 0 5 5 0 8 2
mcl64k 65536 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 118 0 0 15 0 15 15 0 8 0
mcl2k 2048 17 0 0 3 0 3 3 0 8 0
mextrefs 64 17 0 0 1 0 1 1 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 188 0 0 12 0 12 12 0 8 0
bufpl 272 2485 0 102 159 0 159 159 0 8 0
anonpl 32 5271 0 0 43 0 43 43 0 247 0
amapchunkpl 152 10165 0 9771 27 0 27 27 0 158 6
amappl16 200 1764 0 1747 5 3 2 5 0 8 0
amappl15 192 2 0 2 1 1 0 1 0 8 0
amappl14 184 494 0 492 1 0 1 1 0 8 0
amappl13 176 113 0 103 1 0 1 1 0 8 0
amappl12 168 726 0 696 2 0 2 2 0 8 0
amappl11 160 5 0 5 1 1 0 1 0 8 0
amappl10 152 59 0 49 1 0 1 1 0 8 0
amappl9 144 276 0 275 2 1 1 1 0 8 0
amappl8 136 92 0 91 1 0 1 1 0 8 0
amappl7 128 169 0 158 1 0 1 1 0 8 0
amappl6 120 151 0 150 1 0 1 1 0 8 0
amappl5 112 167 0 160 1 0 1 1 0 8 0
amappl4 104 259 0 242 1 0 1 1 0 8 0
amappl3 96 1835 0 1741 5 1 4 4 0 8 0
amappl2 88 504 0 451 2 0 2 2 0 8 0
amappl1 80 10414 0 9860 15 0 15 15 0 8 1
amappl 88 2896 0 2758 5 0 5 5 0 92 0
uvmvnodes 80 97 0 0 2 0 2 2 0 8 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 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
aobjpl 72 6 0 0 1 0 1 1 0 8 0
uaddrrnd 24 495 0 463 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 495 0 463 1 0 1 1 0 8 0
vmmpekpl 168 5975 0 5931 3 0 3 3 0 8 0
vmmpepl 168 40672 0 38906 93 0 93 93 0 357 6
vmsppl 488 494 0 462 7 1 6 6 0 8 0
rwobjpl 80 14776 0 13884 23 0 23 23 0 8 0
pdppl 4096 997 0 924 105 24 81 95 0 8 8
pvpl 32 11305 0 0 92 0 92 92 0 265 0
pmappl 256 494 0 462 4 1 3 3 0 8 0
extentpl 40 46 0 28 1 0 1 1 0 8 0
phpool 112 434 0 27 12 0 12 12 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
malloc(10,7f,1) at malloc+0x855 sys/kern/kern_malloc.c:294
spec_open_clone(ffff800037bb0eb8) at spec_open_clone+0x333 sys/kern/spec_vnops.c:-1
spec_open(ffff800037bb0eb8) at spec_open+0x319 sys/kern/spec_vnops.c:148
VOP_OPEN(fffffc8070c21360,3,fffffc80097fd820,ffff80003c4087f0) at VOP_OPEN+0x8b sys/kern/vfs_vops.c:138
vn_open(ffff800037bb1108,3,0) at vn_open+0x7a5 sys/kern/vfs_vnops.c:183
doopenat(ffff80003c4087f0,ffffff9c,3b7e5ee45d,2,0,0,596ea06197f9b5ae) at doopenat+0x35b sys/kern/vfs_syscalls.c:1163
sys_open(ffff80003c4087f0,ffff800037bb13c0,ffff800037bb1310) at sys_open+0x59 sys/kern/vfs_syscalls.c:1065
syscall(ffff800037bb13c0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800037bb13c0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x737f0335c3a0, count: -9
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
ddb{1}> trace
x86_ipi_db(ffff80002999dff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff839ef4c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff839ef4c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173
__mp_acquire_count(ffffffff839ef4c0,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1
sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:369
getblk(fffffc800b209360,65560,4000,0,ffffffffffffffff) at getblk+0x197 sys/kern/vfs_bio.c:882
bread(fffffc800b209360,65560,4000,ffff800031f855b0) at bread+0x45 bio_doread sys/kern/vfs_bio.c:295 [inline]
bread(fffffc800b209360,65560,4000,ffff800031f855b0) at bread+0x45 sys/kern/vfs_bio.c:340
ffs_update(fffffc806cf415e8,1) at ffs_update+0x198 sys/ufs/ffs/ffs_inode.c:91
ffs_truncate(fffffc806cf415e8,0,4,fffffc80097fd750) at ffs_truncate+0xc9b sys/ufs/ffs/ffs_inode.c:-1
ufs_rmdir(ffff800031f85880) at ufs_rmdir+0x2f1 sys/ufs/ufs/ufs_vnops.c:1265
VOP_RMDIR(fffffc806d749e90,fffffc8067868628,ffff800031f85958) at VOP_RMDIR+0x192 sys/kern/vfs_vops.c:413
dounlinkat(ffff800037bb94e0,ffffff9c,7b3a93961130,8) at dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1840
syscall(ffff800031f85ad0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800031f85ad0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7b3a93961120, count: -15
---
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