uvm_fault: bpfioctl (6)
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syzbot
Jun 23, 2026, 10:48:25 PM (9 days ago) Jun 23
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 26c6eebc6662 Remove global variable from multicast routing.
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=165c8356580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=db67bdb8140ac0f321d1
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/947d081f907f/disk-26c6eebc.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/1202d6c9e1a0/bsd-26c6eebc.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/0cdad67d0d1e/kernel-26c6eebc.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+db67bd...@syzkaller.appspotmail.com
uvm_fault(0xffffef006c51a998, 0x30, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at bpfioctl+0x1189: movq 0x30(%rax),%rdi
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*295156 60615 0 0 0x4000000 1K syz-executor
82716 1844 0 0x2 0x1 0 syz-executor
bpfioctl(31700,20004269,ffff80002fb7b680,1,ffff80003c3c0028) at bpfioctl+0x1189 sys/net/bpf.c:892
VOP_IOCTL(ffffef00661c0038,20004269,ffff80002fb7b680,1,ffffef00097fd3a8,ffff80003c3c0028) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
vn_ioctl(ffffef0069f24b98,20004269,ffff80002fb7b680,ffff80003c3c0028) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
sys_ioctl(ffff80003c3c0028,ffff80002fb7b860,ffff80002fb7b7b0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff80002fb7b860) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002fb7b860) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x707d7a37090, count: 9
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}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: uvm_fault(0xffffef006c51a998, 0x30, 0, 1) -> e
ddb{1}> trace
bpfioctl(31700,20004269,ffff80002fb7b680,1,ffff80003c3c0028) at bpfioctl+0x1189 sys/net/bpf.c:892
VOP_IOCTL(ffffef00661c0038,20004269,ffff80002fb7b680,1,ffffef00097fd3a8,ffff80003c3c0028) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
vn_ioctl(ffffef0069f24b98,20004269,ffff80002fb7b680,ffff80003c3c0028) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
sys_ioctl(ffff80003c3c0028,ffff80002fb7b860,ffff80002fb7b7b0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff80002fb7b860) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002fb7b860) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x707d7a37090, count: -6
ddb{1}> show registers
rdi 0xffff800031b8e000
rsi 0x85f
rbp 0xffff80002fb7b4b0
rbx 0x301
rdx 0xffff800031b8e000
rcx 0x85e
rax 0
r8 0xffffffffffffffff
r9 0x1
r10 0xff02ff052289a827
r11 0x1623f5857f18b6bc
r12 0
r13 0xffff80002998dff0
r14 0xffff800001663800
r15 0xffff8000016638c8
rip 0xffffffff81d240a9 bpfioctl+0x1189
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80002fb7b450
ss 0x10
bpfioctl+0x1189: movq 0x30(%rax),%rdi
ddb{1}> show proc
PROC (syz-executor) tid=295156 pid=60615 tcnt=3 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=32, usrpri=71, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80003c3c1a18,0xffff80003c3c1790
process=0xffff80002a36e1c8 user=0xffff80002fb76000, vmspace=0xffffef006c51a998
estcpu=21, cpticks=106, pctcpu=0.70, user=0, sys=106, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
8554 319701 63539 0 2 0 syz-executor
60015 502537 4466 0 4 0x82000 syz-executor
60015 434069 4466 0 2 0x4082000 syz-executor
60015 326648 4466 0 2 0x4082000 syz-executor
60015 455342 4466 0 3 0x4002000 suspend syz-executor
52263 57528 78705 0 2 0 syz-executor
60615 329901 86953 0 3 0x80 nanoslp syz-executor
60615 203928 86953 0 3 0x4000000 tqbar syz-executor
*60615 295156 86953 0 7 0x4000000 syz-executor
299 246839 0 0 3 0x14200 acct acct
7494 165784 1 0 3 0x100083 ttyin getty
63539 379110 29815 0 3 0x82 nanoslp syz-executor
1844 82716 29815 0 7 0x3 syz-executor
4466 401010 29815 0 3 0x82 nanoslp syz-executor
86953 388254 29815 0 2 0x2 syz-executor
78642 307553 29815 0 3 0x2 biowait syz-executor
53739 73413 29815 0 3 0x2 biowait syz-executor
78705 508893 29815 0 3 0x82 nanoslp syz-executor
52899 180393 29815 0 3 0x2 biowait syz-executor
29815 449988 14355 0 3 0x2 netlock syz-executor
14355 171425 17383 0 3 0x10008a sigsusp ksh
17383 237448 86258 0 3 0x98 kqread sshd-session
86258 454667 61754 0 3 0x92 kqread sshd-session
61754 224614 1 0 3 0x88 kqread sshd
79780 214834 19701 74 3 0x1100092 bpf pflogd
19701 379553 1 0 3 0x80 sbwait pflogd
12382 224128 4685 73 3 0x1100090 kqread syslogd
4685 220292 1 0 3 0x100082 sbwait syslogd
53896 139820 1 0 2 0x100080 resolvd
27902 299841 53720 77 2 0x100012 dhcpleased
32633 416538 53720 77 3 0x100092 kqread dhcpleased
53720 121629 1 0 3 0x80 kqread dhcpleased
22370 228427 0 0 3 0x14200 bored smr
22774 60727 0 0 2 0x14200 zerothread
47983 297307 0 0 3 0x14200 aiodoned aiodoned
79266 16097 0 0 3 0x14200 syncer update
4251 149389 0 0 3 0x14200 cleaner cleaner
41092 166769 0 0 3 0x14200 reaper reaper
6087 484243 0 0 3 0x14200 pgdaemon pagedaemon
86189 409462 0 0 3 0x14200 bored viomb
46442 275270 0 0 3 0x40014200 acpi0 acpi0
84715 436663 0 0 3 0x40014200 idle1
80094 181055 0 0 3 0x14200 bored softnet1
89921 98331 0 0 2 0x14200 softnet0
54847 72420 0 0 3 0x14200 smrbar systqmp
99834 137211 0 0 3 0x14200 bored systq
366 364910 0 0 3 0x14200 tmoslp softclockmp
62004 290599 0 0 3 0x40014200 tmoslp softclock
476 188644 0 0 3 0x40014200 idle0
1 347835 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 60615 (syz-executor) thread 0xffff80003c3a9778 (203928)
exclusive rwlock clonelk r = 0 (0xffffffff83974a38)
#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 if_clone_destroy+0x93 sys/net/if.c:-1
#3 ifioctl+0x59d sys/net/if.c:2160
#4 sys_ioctl+0x674 sys/kern/sys_generic.c:-1
#5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#6 Xsyscall+0x128
Process 60615 (syz-executor) thread 0xffff80003c3c0028 (295156)
exclusive rwlock netlock r = 0 (0xffffffff83974b30)
#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 bpfioctl+0x117c sys/net/bpf.c:892
#3 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
#4 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
#5 sys_ioctl+0x674 sys/kern/sys_generic.c:-1
#6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#7 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a76d80)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1
#2 sleep_finish+0x2d8 sys/kern/kern_synch.c:369
#3 rw_do_enter_write+0x1dc sys/kern/kern_rwlock.c:298
#4 bpfioctl+0x117c sys/net/bpf.c:892
#5 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
#6 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
#7 sys_ioctl+0x674 sys/kern/sys_generic.c:-1
#8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#9 Xsyscall+0x128
Process 78642 (syz-executor) thread 0xffff80002a2127d8 (307553)
exclusive rrwlock inode r = 0 (0xffffef0069f0c0c8)
#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:686
#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:1806
#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 (0xffffef006ac809f8)
#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:1806
#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 53739 (syz-executor) thread 0xffff80002a212a70 (73413)
exclusive rrwlock inode r = 0 (0xffffef0069f0c7b8)
#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:686
#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:1806
#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 (0xffffef006ac80e98)
#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:1806
#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 52899 (syz-executor) thread 0xffff80002a212fa0 (180393)
exclusive rrwlock inode r = 0 (0xffffef006ca46b70)
#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:159
#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:3062
#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 (0xffffef006e2ed300)
#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:3047
#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 54847 (systqmp) thread 0xffff807fffffea60 (72420)
shared rwlock systqmp r = 0 (0xffffffff83901338)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 taskq_thread+0x12a sys/kern/kern_task.c:442
#2 proc_trampoline+0x10
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11087 12162K 12473K 166960K 12270 0
pcb 17 13K 13K 166960K 71 0
rtable 203 6K 7K 166960K 443 0
pf 34 17K 22K 166960K 55 0
ifaddr 39 6K 7K 166960K 46 0
ifgroup 51 2K 2K 166960K 57 0
sysctl 4 1K 9K 166960K 8 0
counters 68 36K 37K 166960K 76 0
ioctlops 0 0K 4K 166960K 1537 0
iov 0 0K 16K 166960K 10 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1356 85K 86K 166960K 1538 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 9 0K 0K 166960K 13 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 14 49K 93K 166960K 259 0
sigio 0 0K 0K 166960K 1 0
proc 72 115K 180K 166960K 570 0
subproc 72 4K 4K 166960K 72 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 8 0
in_multi 85 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 223 996K 996K 166960K 223 0
exec 0 0K 1K 166960K 406 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 197 150K 165K 166960K 4279 0
UVM aobj 6 2K 2K 166960K 6 0
pinsyscall 39 78K 104K 166960K 1449 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 4 0
NDP 11 0K 2K 166960K 30 0
temp 40 9118K 9182K 166960K 13399 0
kqueue 13 20K 24K 166960K 42 0
SYN cache 2 16K 16K 166960K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 26 0 0 1 0 1 1 0 8 0
rtpcb 120 46 0 43 1 0 1 1 0 8 0
rtentry 176 115 0 24 6 0 6 6 0 8 0
unpcb 144 97 0 80 2 0 2 2 0 8 1
syncache 336 6 0 6 1 0 1 1 0 8 1
tcpcb 736 30 0 26 1 0 1 1 0 8 0
arp 136 18 0 2 1 0 1 1 0 8 0
inpcb 328 201 0 192 4 0 4 4 0 8 2
nd6 152 27 0 5 2 0 2 2 0 8 0
kcovpl 48 8 0 0 1 0 1 1 0 8 0
ppxss 1192 3 0 3 1 0 1 1 0 8 1
pfstscr 40 2 0 0 1 0 1 1 0 8 0
pffrag 232 2 0 0 1 0 1 1 0 482 0
pffrnode 88 1 0 0 1 0 1 1 0 8 0
pffrent 40 3 0 1 1 0 1 1 0 8 0
pfosfp 40 1428 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfrktable 1344 1 0 1 1 0 1 1 0 8 1
pfstitem 24 42 0 0 1 0 1 1 0 8 0
pfstkey 128 42 0 0 2 0 2 2 0 8 0
pfstate 448 40 0 0 5 0 5 5 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 256 493 0 30 31 0 31 31 0 8 0
art_table 40 494 0 30 5 0 5 5 0 8 0
art_node 32 115 0 13 1 0 1 1 0 8 0
semapl 72 10 0 3 1 0 1 1 0 8 0
shmpl 112 3 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1780 0 312 93 0 93 93 0 8 0
ffsino 296 1780 0 312 114 0 114 114 0 8 0
nchpl 144 2152 0 452 64 0 64 64 0 8 0
rtmask 32 2 0 2 1 0 1 1 0 8 1
vnodes 216 2019 0 0 113 0 113 113 0 8 0
namei 1024 7144 0 7143 2 0 2 2 0 8 1
percpumem 16 53 0 4 1 0 1 1 0 8 0
kstatmem 264 29 0 3 2 0 2 2 0 8 0
scsiplug 72 1 0 1 1 0 1 1 0 8 1
scxspl 216 7745 0 7742 11 3 8 8 1 8 7
plimitpl 152 136 0 119 1 0 1 1 0 8 0
sigapl 424 587 0 542 7 0 7 7 0 8 1
knotepl 120 66 0 0 2 0 2 2 0 8 0
kqueuepl 224 46 0 37 1 0 1 1 0 8 0
pipepl 344 142 0 113 3 0 3 3 0 8 0
fdescpl 528 570 0 542 3 0 3 3 0 8 0
filepl 160 2770 0 2553 14 0 14 14 0 8 4
lockfpl 104 70 0 68 1 0 1 1 0 8 0
lockfspl 48 31 0 29 1 0 1 1 0 8 0
sessionpl 144 30 0 21 1 0 1 1 0 8 0
pgrppl 48 40 0 23 1 0 1 1 0 8 0
ucredpl 104 276 0 263 1 0 1 1 0 8 0
zombiepl 144 542 0 542 1 0 1 1 0 8 1
processpl 1232 587 0 542 5 0 5 5 0 8 1
procpl 664 806 0 756 6 0 6 6 0 8 0
sockpl 752 349 0 320 7 0 7 7 0 8 3
mcl64k 65536 2 0 0 1 0 1 1 0 8 0
mcl16k 16384 1 0 0 1 0 1 1 0 8 0
mcl9k128 9344 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 4 0 0 1 0 1 1 0 8 0
mcl4k 4096 131 0 0 17 0 17 17 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 52 0 0 7 0 7 7 0 8 0
mtagpl 96 1 0 0 1 0 1 1 0 8 0
mbufpl 256 257 0 0 16 0 16 16 0 8 0
bufpl 272 2738 0 105 176 0 176 176 0 8 0
anonpl 32 7710 0 0 63 0 63 63 0 115 0
amapchunkpl 152 12354 0 11992 28 0 28 28 0 158 8
amappl16 200 1887 0 1867 17 5 12 15 0 8 8
amappl15 192 5 0 5 1 1 0 1 0 8 0
amappl14 184 438 0 437 1 0 1 1 0 8 0
amappl13 176 159 0 147 1 0 1 1 0 8 0
amappl12 168 856 0 831 2 0 2 2 0 8 0
amappl11 160 2 0 2 1 1 0 1 0 8 0
amappl10 152 67 0 53 1 0 1 1 0 8 0
amappl9 144 280 0 280 1 1 0 1 0 8 0
amappl8 136 99 0 97 1 0 1 1 0 8 0
amappl7 128 153 0 140 1 0 1 1 0 8 0
amappl6 120 159 0 158 1 0 1 1 0 8 0
amappl5 112 103 0 93 1 0 1 1 0 8 0
amappl4 104 319 0 300 1 0 1 1 0 8 0
amappl3 96 2317 0 2232 4 0 4 4 0 8 0
amappl2 88 571 0 509 2 0 2 2 0 8 0
amappl1 80 10926 0 10345 15 0 15 15 0 8 2
amappl 88 3501 0 3374 5 0 5 5 0 92 0
uvmvnodes 80 111 0 0 3 0 3 3 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 128 254 0 254 2 1 1 1 0 8 1
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 5 0 0 1 0 1 1 0 8 0
uaddrrnd 24 570 0 542 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 570 0 542 1 0 1 1 0 8 0
vmmpekpl 168 6655 0 6616 3 0 3 3 0 8 1
vmmpepl 168 45463 0 43752 96 0 96 96 0 357 10
vmsppl 488 569 0 542 5 0 5 5 0 8 1
rwobjpl 80 16049 0 15059 28 1 27 27 0 8 2
pdppl 4096 1147 0 1084 101 32 69 85 0 8 6
pvpl 32 14100 0 0 115 1 114 114 0 265 0
pmappl 256 569 0 542 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 465 0 35 13 0 13 13 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff838d6ff0) 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(ffffffff83a76580) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a76580) at __mp_lock+0x192 sys/kern/kern_lock.c:173
intr_handler(ffff80002a34c960,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__mp_lock(ffffffff83a76580) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a76580) at __mp_lock+0x192 sys/kern/kern_lock.c:173
ktrsysret(ffff807ffffeed10,3,0,ffff80002a34cb50) at ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline]
ktrsysret(ffff807ffffeed10,3,0,ffff80002a34cb50) at ktrsysret+0xde sys/kern/kern_ktrace.c:209
syscall(ffff80002a34cc00) at syscall+0xa51 mi_syscall_return sys/sys/syscall_mi.h:204 [inline]
syscall(ffff80002a34cc00) at syscall+0xa51 sys/arch/amd64/amd64/trap.c:804
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x70f89101c420, count: 5
ddb{0}> trace
x86_ipi_db(ffffffff838d6ff0) 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(ffffffff83a76580) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a76580) at __mp_lock+0x192 sys/kern/kern_lock.c:173
intr_handler(ffff80002a34c960,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__mp_lock(ffffffff83a76580) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a76580) at __mp_lock+0x192 sys/kern/kern_lock.c:173
ktrsysret(ffff807ffffeed10,3,0,ffff80002a34cb50) at ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline]
ktrsysret(ffff807ffffeed10,3,0,ffff80002a34cb50) at ktrsysret+0xde sys/kern/kern_ktrace.c:209
syscall(ffff80002a34cc00) at syscall+0xa51 mi_syscall_return sys/sys/syscall_mi.h:204 [inline]
syscall(ffff80002a34cc00) at syscall+0xa51 sys/arch/amd64/amd64/trap.c:804
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x70f89101c420, count: -10
ddb{0}> machine ddbcpu 1
Stopped at bpfioctl+0x1189: movq 0x30(%rax),%rdi
bpfioctl(31700,20004269,ffff80002fb7b680,1,ffff80003c3c0028) at bpfioctl+0x1189 sys/net/bpf.c:892
VOP_IOCTL(ffffef00661c0038,20004269,ffff80002fb7b680,1,ffffef00097fd3a8,ffff80003c3c0028) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
vn_ioctl(ffffef0069f24b98,20004269,ffff80002fb7b680,ffff80003c3c0028) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
sys_ioctl(ffff80003c3c0028,ffff80002fb7b860,ffff80002fb7b7b0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff80002fb7b860) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002fb7b860) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x707d7a37090, count: 9
ddb{1}> trace
bpfioctl(31700,20004269,ffff80002fb7b680,1,ffff80003c3c0028) at bpfioctl+0x1189 sys/net/bpf.c:892
VOP_IOCTL(ffffef00661c0038,20004269,ffff80002fb7b680,1,ffffef00097fd3a8,ffff80003c3c0028) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
vn_ioctl(ffffef0069f24b98,20004269,ffff80002fb7b680,ffff80003c3c0028) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
sys_ioctl(ffff80003c3c0028,ffff80002fb7b860,ffff80002fb7b7b0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff80002fb7b860) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002fb7b860) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x707d7a37090, count: -6
---
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.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
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:
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(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: 26c6eebc6662 Remove global variable from multicast routing.
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=165c8356580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=db67bdb8140ac0f321d1
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/947d081f907f/disk-26c6eebc.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/1202d6c9e1a0/bsd-26c6eebc.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/0cdad67d0d1e/kernel-26c6eebc.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+db67bd...@syzkaller.appspotmail.com
uvm_fault(0xffffef006c51a998, 0x30, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at bpfioctl+0x1189: movq 0x30(%rax),%rdi
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*295156 60615 0 0 0x4000000 1K syz-executor
82716 1844 0 0x2 0x1 0 syz-executor
bpfioctl(31700,20004269,ffff80002fb7b680,1,ffff80003c3c0028) at bpfioctl+0x1189 sys/net/bpf.c:892
VOP_IOCTL(ffffef00661c0038,20004269,ffff80002fb7b680,1,ffffef00097fd3a8,ffff80003c3c0028) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
vn_ioctl(ffffef0069f24b98,20004269,ffff80002fb7b680,ffff80003c3c0028) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
sys_ioctl(ffff80003c3c0028,ffff80002fb7b860,ffff80002fb7b7b0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff80002fb7b860) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002fb7b860) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x707d7a37090, count: 9
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}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: uvm_fault(0xffffef006c51a998, 0x30, 0, 1) -> e
ddb{1}> trace
bpfioctl(31700,20004269,ffff80002fb7b680,1,ffff80003c3c0028) at bpfioctl+0x1189 sys/net/bpf.c:892
VOP_IOCTL(ffffef00661c0038,20004269,ffff80002fb7b680,1,ffffef00097fd3a8,ffff80003c3c0028) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
vn_ioctl(ffffef0069f24b98,20004269,ffff80002fb7b680,ffff80003c3c0028) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
sys_ioctl(ffff80003c3c0028,ffff80002fb7b860,ffff80002fb7b7b0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff80002fb7b860) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002fb7b860) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x707d7a37090, count: -6
ddb{1}> show registers
rdi 0xffff800031b8e000
rsi 0x85f
rbp 0xffff80002fb7b4b0
rbx 0x301
rdx 0xffff800031b8e000
rcx 0x85e
rax 0
r8 0xffffffffffffffff
r9 0x1
r10 0xff02ff052289a827
r11 0x1623f5857f18b6bc
r12 0
r13 0xffff80002998dff0
r14 0xffff800001663800
r15 0xffff8000016638c8
rip 0xffffffff81d240a9 bpfioctl+0x1189
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80002fb7b450
ss 0x10
bpfioctl+0x1189: movq 0x30(%rax),%rdi
ddb{1}> show proc
PROC (syz-executor) tid=295156 pid=60615 tcnt=3 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=32, usrpri=71, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80003c3c1a18,0xffff80003c3c1790
process=0xffff80002a36e1c8 user=0xffff80002fb76000, vmspace=0xffffef006c51a998
estcpu=21, cpticks=106, pctcpu=0.70, user=0, sys=106, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
8554 319701 63539 0 2 0 syz-executor
60015 502537 4466 0 4 0x82000 syz-executor
60015 434069 4466 0 2 0x4082000 syz-executor
60015 326648 4466 0 2 0x4082000 syz-executor
60015 455342 4466 0 3 0x4002000 suspend syz-executor
52263 57528 78705 0 2 0 syz-executor
60615 329901 86953 0 3 0x80 nanoslp syz-executor
60615 203928 86953 0 3 0x4000000 tqbar syz-executor
*60615 295156 86953 0 7 0x4000000 syz-executor
299 246839 0 0 3 0x14200 acct acct
7494 165784 1 0 3 0x100083 ttyin getty
63539 379110 29815 0 3 0x82 nanoslp syz-executor
1844 82716 29815 0 7 0x3 syz-executor
4466 401010 29815 0 3 0x82 nanoslp syz-executor
86953 388254 29815 0 2 0x2 syz-executor
78642 307553 29815 0 3 0x2 biowait syz-executor
53739 73413 29815 0 3 0x2 biowait syz-executor
78705 508893 29815 0 3 0x82 nanoslp syz-executor
52899 180393 29815 0 3 0x2 biowait syz-executor
29815 449988 14355 0 3 0x2 netlock syz-executor
14355 171425 17383 0 3 0x10008a sigsusp ksh
17383 237448 86258 0 3 0x98 kqread sshd-session
86258 454667 61754 0 3 0x92 kqread sshd-session
61754 224614 1 0 3 0x88 kqread sshd
79780 214834 19701 74 3 0x1100092 bpf pflogd
19701 379553 1 0 3 0x80 sbwait pflogd
12382 224128 4685 73 3 0x1100090 kqread syslogd
4685 220292 1 0 3 0x100082 sbwait syslogd
53896 139820 1 0 2 0x100080 resolvd
27902 299841 53720 77 2 0x100012 dhcpleased
32633 416538 53720 77 3 0x100092 kqread dhcpleased
53720 121629 1 0 3 0x80 kqread dhcpleased
22370 228427 0 0 3 0x14200 bored smr
22774 60727 0 0 2 0x14200 zerothread
47983 297307 0 0 3 0x14200 aiodoned aiodoned
79266 16097 0 0 3 0x14200 syncer update
4251 149389 0 0 3 0x14200 cleaner cleaner
41092 166769 0 0 3 0x14200 reaper reaper
6087 484243 0 0 3 0x14200 pgdaemon pagedaemon
86189 409462 0 0 3 0x14200 bored viomb
46442 275270 0 0 3 0x40014200 acpi0 acpi0
84715 436663 0 0 3 0x40014200 idle1
80094 181055 0 0 3 0x14200 bored softnet1
89921 98331 0 0 2 0x14200 softnet0
54847 72420 0 0 3 0x14200 smrbar systqmp
99834 137211 0 0 3 0x14200 bored systq
366 364910 0 0 3 0x14200 tmoslp softclockmp
62004 290599 0 0 3 0x40014200 tmoslp softclock
476 188644 0 0 3 0x40014200 idle0
1 347835 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 60615 (syz-executor) thread 0xffff80003c3a9778 (203928)
exclusive rwlock clonelk r = 0 (0xffffffff83974a38)
#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 if_clone_destroy+0x93 sys/net/if.c:-1
#3 ifioctl+0x59d sys/net/if.c:2160
#4 sys_ioctl+0x674 sys/kern/sys_generic.c:-1
#5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#6 Xsyscall+0x128
Process 60615 (syz-executor) thread 0xffff80003c3c0028 (295156)
exclusive rwlock netlock r = 0 (0xffffffff83974b30)
#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 bpfioctl+0x117c sys/net/bpf.c:892
#3 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
#4 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
#5 sys_ioctl+0x674 sys/kern/sys_generic.c:-1
#6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#7 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a76d80)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1
#2 sleep_finish+0x2d8 sys/kern/kern_synch.c:369
#3 rw_do_enter_write+0x1dc sys/kern/kern_rwlock.c:298
#4 bpfioctl+0x117c sys/net/bpf.c:892
#5 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
#6 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
#7 sys_ioctl+0x674 sys/kern/sys_generic.c:-1
#8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#9 Xsyscall+0x128
Process 78642 (syz-executor) thread 0xffff80002a2127d8 (307553)
exclusive rrwlock inode r = 0 (0xffffef0069f0c0c8)
#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:686
#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:1806
#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 (0xffffef006ac809f8)
#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:1806
#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 53739 (syz-executor) thread 0xffff80002a212a70 (73413)
exclusive rrwlock inode r = 0 (0xffffef0069f0c7b8)
#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:686
#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:1806
#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 (0xffffef006ac80e98)
#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:1806
#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 52899 (syz-executor) thread 0xffff80002a212fa0 (180393)
exclusive rrwlock inode r = 0 (0xffffef006ca46b70)
#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:159
#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:3062
#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 (0xffffef006e2ed300)
#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:3047
#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 54847 (systqmp) thread 0xffff807fffffea60 (72420)
shared rwlock systqmp r = 0 (0xffffffff83901338)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 taskq_thread+0x12a sys/kern/kern_task.c:442
#2 proc_trampoline+0x10
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11087 12162K 12473K 166960K 12270 0
pcb 17 13K 13K 166960K 71 0
rtable 203 6K 7K 166960K 443 0
pf 34 17K 22K 166960K 55 0
ifaddr 39 6K 7K 166960K 46 0
ifgroup 51 2K 2K 166960K 57 0
sysctl 4 1K 9K 166960K 8 0
counters 68 36K 37K 166960K 76 0
ioctlops 0 0K 4K 166960K 1537 0
iov 0 0K 16K 166960K 10 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1356 85K 86K 166960K 1538 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 9 0K 0K 166960K 13 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 14 49K 93K 166960K 259 0
sigio 0 0K 0K 166960K 1 0
proc 72 115K 180K 166960K 570 0
subproc 72 4K 4K 166960K 72 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 8 0
in_multi 85 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 223 996K 996K 166960K 223 0
exec 0 0K 1K 166960K 406 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 197 150K 165K 166960K 4279 0
UVM aobj 6 2K 2K 166960K 6 0
pinsyscall 39 78K 104K 166960K 1449 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 4 0
NDP 11 0K 2K 166960K 30 0
temp 40 9118K 9182K 166960K 13399 0
kqueue 13 20K 24K 166960K 42 0
SYN cache 2 16K 16K 166960K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 26 0 0 1 0 1 1 0 8 0
rtpcb 120 46 0 43 1 0 1 1 0 8 0
rtentry 176 115 0 24 6 0 6 6 0 8 0
unpcb 144 97 0 80 2 0 2 2 0 8 1
syncache 336 6 0 6 1 0 1 1 0 8 1
tcpcb 736 30 0 26 1 0 1 1 0 8 0
arp 136 18 0 2 1 0 1 1 0 8 0
inpcb 328 201 0 192 4 0 4 4 0 8 2
nd6 152 27 0 5 2 0 2 2 0 8 0
kcovpl 48 8 0 0 1 0 1 1 0 8 0
ppxss 1192 3 0 3 1 0 1 1 0 8 1
pfstscr 40 2 0 0 1 0 1 1 0 8 0
pffrag 232 2 0 0 1 0 1 1 0 482 0
pffrnode 88 1 0 0 1 0 1 1 0 8 0
pffrent 40 3 0 1 1 0 1 1 0 8 0
pfosfp 40 1428 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfrktable 1344 1 0 1 1 0 1 1 0 8 1
pfstitem 24 42 0 0 1 0 1 1 0 8 0
pfstkey 128 42 0 0 2 0 2 2 0 8 0
pfstate 448 40 0 0 5 0 5 5 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 256 493 0 30 31 0 31 31 0 8 0
art_table 40 494 0 30 5 0 5 5 0 8 0
art_node 32 115 0 13 1 0 1 1 0 8 0
semapl 72 10 0 3 1 0 1 1 0 8 0
shmpl 112 3 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1780 0 312 93 0 93 93 0 8 0
ffsino 296 1780 0 312 114 0 114 114 0 8 0
nchpl 144 2152 0 452 64 0 64 64 0 8 0
rtmask 32 2 0 2 1 0 1 1 0 8 1
vnodes 216 2019 0 0 113 0 113 113 0 8 0
namei 1024 7144 0 7143 2 0 2 2 0 8 1
percpumem 16 53 0 4 1 0 1 1 0 8 0
kstatmem 264 29 0 3 2 0 2 2 0 8 0
scsiplug 72 1 0 1 1 0 1 1 0 8 1
scxspl 216 7745 0 7742 11 3 8 8 1 8 7
plimitpl 152 136 0 119 1 0 1 1 0 8 0
sigapl 424 587 0 542 7 0 7 7 0 8 1
knotepl 120 66 0 0 2 0 2 2 0 8 0
kqueuepl 224 46 0 37 1 0 1 1 0 8 0
pipepl 344 142 0 113 3 0 3 3 0 8 0
fdescpl 528 570 0 542 3 0 3 3 0 8 0
filepl 160 2770 0 2553 14 0 14 14 0 8 4
lockfpl 104 70 0 68 1 0 1 1 0 8 0
lockfspl 48 31 0 29 1 0 1 1 0 8 0
sessionpl 144 30 0 21 1 0 1 1 0 8 0
pgrppl 48 40 0 23 1 0 1 1 0 8 0
ucredpl 104 276 0 263 1 0 1 1 0 8 0
zombiepl 144 542 0 542 1 0 1 1 0 8 1
processpl 1232 587 0 542 5 0 5 5 0 8 1
procpl 664 806 0 756 6 0 6 6 0 8 0
sockpl 752 349 0 320 7 0 7 7 0 8 3
mcl64k 65536 2 0 0 1 0 1 1 0 8 0
mcl16k 16384 1 0 0 1 0 1 1 0 8 0
mcl9k128 9344 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 4 0 0 1 0 1 1 0 8 0
mcl4k 4096 131 0 0 17 0 17 17 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 52 0 0 7 0 7 7 0 8 0
mtagpl 96 1 0 0 1 0 1 1 0 8 0
mbufpl 256 257 0 0 16 0 16 16 0 8 0
bufpl 272 2738 0 105 176 0 176 176 0 8 0
anonpl 32 7710 0 0 63 0 63 63 0 115 0
amapchunkpl 152 12354 0 11992 28 0 28 28 0 158 8
amappl16 200 1887 0 1867 17 5 12 15 0 8 8
amappl15 192 5 0 5 1 1 0 1 0 8 0
amappl14 184 438 0 437 1 0 1 1 0 8 0
amappl13 176 159 0 147 1 0 1 1 0 8 0
amappl12 168 856 0 831 2 0 2 2 0 8 0
amappl11 160 2 0 2 1 1 0 1 0 8 0
amappl10 152 67 0 53 1 0 1 1 0 8 0
amappl9 144 280 0 280 1 1 0 1 0 8 0
amappl8 136 99 0 97 1 0 1 1 0 8 0
amappl7 128 153 0 140 1 0 1 1 0 8 0
amappl6 120 159 0 158 1 0 1 1 0 8 0
amappl5 112 103 0 93 1 0 1 1 0 8 0
amappl4 104 319 0 300 1 0 1 1 0 8 0
amappl3 96 2317 0 2232 4 0 4 4 0 8 0
amappl2 88 571 0 509 2 0 2 2 0 8 0
amappl1 80 10926 0 10345 15 0 15 15 0 8 2
amappl 88 3501 0 3374 5 0 5 5 0 92 0
uvmvnodes 80 111 0 0 3 0 3 3 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 128 254 0 254 2 1 1 1 0 8 1
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 5 0 0 1 0 1 1 0 8 0
uaddrrnd 24 570 0 542 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 570 0 542 1 0 1 1 0 8 0
vmmpekpl 168 6655 0 6616 3 0 3 3 0 8 1
vmmpepl 168 45463 0 43752 96 0 96 96 0 357 10
vmsppl 488 569 0 542 5 0 5 5 0 8 1
rwobjpl 80 16049 0 15059 28 1 27 27 0 8 2
pdppl 4096 1147 0 1084 101 32 69 85 0 8 6
pvpl 32 14100 0 0 115 1 114 114 0 265 0
pmappl 256 569 0 542 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 465 0 35 13 0 13 13 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff838d6ff0) 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(ffffffff83a76580) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a76580) at __mp_lock+0x192 sys/kern/kern_lock.c:173
intr_handler(ffff80002a34c960,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__mp_lock(ffffffff83a76580) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a76580) at __mp_lock+0x192 sys/kern/kern_lock.c:173
ktrsysret(ffff807ffffeed10,3,0,ffff80002a34cb50) at ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline]
ktrsysret(ffff807ffffeed10,3,0,ffff80002a34cb50) at ktrsysret+0xde sys/kern/kern_ktrace.c:209
syscall(ffff80002a34cc00) at syscall+0xa51 mi_syscall_return sys/sys/syscall_mi.h:204 [inline]
syscall(ffff80002a34cc00) at syscall+0xa51 sys/arch/amd64/amd64/trap.c:804
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x70f89101c420, count: 5
ddb{0}> trace
x86_ipi_db(ffffffff838d6ff0) 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(ffffffff83a76580) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a76580) at __mp_lock+0x192 sys/kern/kern_lock.c:173
intr_handler(ffff80002a34c960,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__mp_lock(ffffffff83a76580) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a76580) at __mp_lock+0x192 sys/kern/kern_lock.c:173
ktrsysret(ffff807ffffeed10,3,0,ffff80002a34cb50) at ktrsysret+0xde ktrwrite2 sys/kern/kern_ktrace.c:-1 [inline]
ktrsysret(ffff807ffffeed10,3,0,ffff80002a34cb50) at ktrsysret+0xde sys/kern/kern_ktrace.c:209
syscall(ffff80002a34cc00) at syscall+0xa51 mi_syscall_return sys/sys/syscall_mi.h:204 [inline]
syscall(ffff80002a34cc00) at syscall+0xa51 sys/arch/amd64/amd64/trap.c:804
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x70f89101c420, count: -10
ddb{0}> machine ddbcpu 1
Stopped at bpfioctl+0x1189: movq 0x30(%rax),%rdi
bpfioctl(31700,20004269,ffff80002fb7b680,1,ffff80003c3c0028) at bpfioctl+0x1189 sys/net/bpf.c:892
VOP_IOCTL(ffffef00661c0038,20004269,ffff80002fb7b680,1,ffffef00097fd3a8,ffff80003c3c0028) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
vn_ioctl(ffffef0069f24b98,20004269,ffff80002fb7b680,ffff80003c3c0028) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
sys_ioctl(ffff80003c3c0028,ffff80002fb7b860,ffff80002fb7b7b0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff80002fb7b860) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002fb7b860) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x707d7a37090, count: 9
ddb{1}> trace
bpfioctl(31700,20004269,ffff80002fb7b680,1,ffff80003c3c0028) at bpfioctl+0x1189 sys/net/bpf.c:892
VOP_IOCTL(ffffef00661c0038,20004269,ffff80002fb7b680,1,ffffef00097fd3a8,ffff80003c3c0028) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
vn_ioctl(ffffef0069f24b98,20004269,ffff80002fb7b680,ffff80003c3c0028) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
sys_ioctl(ffff80003c3c0028,ffff80002fb7b860,ffff80002fb7b7b0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff80002fb7b860) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002fb7b860) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x707d7a37090, count: -6
---
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