uvm_fault(0xfffffd807effd5a0, 0x70, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at vfs_lookup+0x7f7: movl 0x70(%rax),%r14d
ddb{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
kernel page fault
uvm_fault(0xfffffd807effd5a0, 0x70, 0, 1) -> e
vfs_lookup(ffff8000221778d8) at vfs_lookup+0x7f7 sys/kern/vfs_lookup.c:650
end trace frame: 0xffff8000221778c0, count: 0
ddb{1}> trace
vfs_lookup(ffff8000221778d8) at vfs_lookup+0x7f7 sys/kern/vfs_lookup.c:650
namei(ffff8000221778d8) at namei+0x45f sys/kern/vfs_lookup.c:224
dounlinkat(ffff800022099530,ffffff9c,20000000,0) at dounlinkat+0x99 sys/kern/vfs_syscalls.c:1673
syscall(ffff800022177ae0) at syscall+0x576 mi_syscall sys/sys/syscall_mi.h:99 [inline]
syscall(ffff800022177ae0) at syscall+0x576 sys/arch/amd64/amd64/trap.c:574
Xsyscall(6,0,6,0,1,925a564e010) at Xsyscall+0x128
end of kernel
end trace frame: 0x38d, count: -5
ddb{1}> show registers
rdi 0
rsi 0
rbp 0xffff800022177800
rbx 0x800c __ALIGN_SIZE+0x700c
rdx 0x1ce3 __ALIGN_SIZE+0xce3
rcx 0xffff800000972080
rax 0
r8 0xffffffff81e2cfc8 vfs_lookup+0x658
r9 0x5
r10 0x5
r11 0x5ef9491dc7485261
r12 0xffff8000221778d8
r13 0xfffffd80663c1778
r14 0
r15 0
rip 0xffffffff81e2d167 vfs_lookup+0x7f7
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff800022177770
ss 0x10
vfs_lookup+0x7f7: movl 0x70(%rax),%r14d
ddb{1}> show proc
PROC (syz-executor.1) pid=493515 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=77, nice=20
forw=0xffffffffffffffff, list=0xffff800022098978,0xffff8000220992e8
process=0xffff8000220ec9f0 user=0xffff800022172000, vmspace=0xfffffd807effd5a0
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
27139 62404 57662 0 2 0 syz-executor.0
56469 90360 86674 0 2 0 syz-executor.1
*56469 493515 86674 0 7 0x4000000 syz-executor.1
56469 126079 86674 0 2 0x4000000 syz-executor.1
56469 97552 86674 0 7 0x4000000 syz-executor.1
86674 437685 84694 0 3 0x82 nanosleep syz-executor.1
52569 50926 1 0 3 0x100083 ttyin getty
57662 276311 84694 0 3 0x82 nanosleep syz-executor.0
99737 519093 0 0 3 0x14200 bored sosplice
84694 25923 35322 0 3 0x82 thrsleep syz-fuzzer
84694 322068 35322 0 3 0x4000082 thrsleep syz-fuzzer
84694 150993 35322 0 3 0x4000082 thrsleep syz-fuzzer
84694 215305 35322 0 3 0x4000082 kqread syz-fuzzer
84694 101593 35322 0 3 0x4000082 thrsleep syz-fuzzer
84694 37626 35322 0 3 0x4000082 thrsleep syz-fuzzer
84694 131887 35322 0 3 0x4000082 thrsleep syz-fuzzer
84694 66959 35322 0 3 0x4000082 thrsleep syz-fuzzer
84694 195203 35322 0 3 0x4000082 thrsleep syz-fuzzer
84694 261118 35322 0 3 0x4000082 thrsleep syz-fuzzer
35322 310590 58282 0 3 0x10008a pause ksh
58282 116868 94900 0 3 0x92 select sshd
94900 210425 1 0 3 0x80 select sshd
20186 120544 76176 74 3 0x100092 bpf pflogd
76176 62479 1 0 3 0x80 netio pflogd
57757 100306 66189 73 2 0x100090 syslogd
66189 161483 1 0 3 0x100082 netio syslogd
8334 346323 1 77 3 0x100090 poll dhclient
63828 357713 1 0 3 0x80 poll dhclient
25650 176095 0 0 2 0x14200 zerothread
86568 46286 0 0 3 0x14200 aiodoned aiodoned
12954 306789 0 0 3 0x14200 syncer update
99767 110045 0 0 3 0x14200 cleaner cleaner
20605 438562 0 0 3 0x14200 reaper reaper
85259 158208 0 0 3 0x14200 pgdaemon pagedaemon
60525 493466 0 0 3 0x14200 bored crynlk
79369 444532 0 0 3 0x14200 bored crypto
13955 425265 0 0 3 0x40014200 acpi0 acpi0
60878 464703 0 0 3 0x40014200 idle1
5846 496702 0 0 3 0x14200 bored softnet
33975 196641 0 0 3 0x14200 bored systqmp
20759 318853 0 0 3 0x14200 bored systq
55338 117817 0 0 3 0x40014200 bored softclock
41918 28850 0 0 3 0x40014200 idle0
19815 439401 0 0 3 0x14200 bored smr
1 71639 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 56469 (syz-executor.1) thread 0xffff800022099530 (493515)
exclusive rrwlock inode r = 0 (0xfffffd8063fc6708) locked @ /syzkaller/managers/multicore/kernel/sys/ufs/ufs/ufs_vnops.c:1547
#0 witness_lock+0x5a4 sys/kern/subr_witness.c:1201
#1 _rw_enter+0x43c sys/kern/kern_rwlock.c:280
#2 _rrw_enter+0x60 sys/kern/kern_rwlock.c:410
#3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602
#4 vn_lock+0x6e sys/kern/vfs_vnops.c:549
#5 vget+0x1c3 sys/kern/vfs_subr.c:672
#6 ufs_ihashget+0x141 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x74 sys/ufs/ffs/ffs_vfsops.c:1323
#8 ufs_lookup+0x1575 sys/ufs/ufs/ufs_lookup.c:487
#9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90
#10 vfs_lookup+0x575 sys/kern/vfs_lookup.c:523
#11 namei+0x45f sys/kern/vfs_lookup.c:224
#12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1673
#13 syscall+0x576 mi_syscall sys/sys/syscall_mi.h:99 [inline]
#13 syscall+0x576 sys/arch/amd64/amd64/trap.c:574
#14 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82376d70) locked @ /syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/trap.c:161
#0 witness_lock+0x5a4 sys/kern/subr_witness.c:1201
#1 ___mp_acquire_count+0x67 sys/kern/kern_lock.c:231
#2 mi_switch+0x3c2 sys/kern/sched_bsd.c:439
#3 sleep_finish+0x110 sys/kern/kern_synch.c:312
#4 _rw_enter+0x338 sys/kern/kern_rwlock.c:256
#5 _rrw_enter+0x60 sys/kern/kern_rwlock.c:410
#6 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602
#7 vn_lock+0x6e sys/kern/vfs_vnops.c:549
#8 vget+0x1c3 sys/kern/vfs_subr.c:672
#9 ufs_ihashget+0x141 sys/ufs/ufs/ufs_ihash.c:119
#10 ffs_vget+0x74 sys/ufs/ffs/ffs_vfsops.c:1323
#11 ufs_lookup+0x1575 sys/ufs/ufs/ufs_lookup.c:487
#12 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:90
#13 vfs_lookup+0x575 sys/kern/vfs_lookup.c:523
#14 namei+0x45f sys/kern/vfs_lookup.c:224
#15 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1673
#16 syscall+0x576 mi_syscall sys/sys/syscall_mi.h:99 [inline]
#16 syscall+0x576 sys/arch/amd64/amd64/trap.c:574
#17 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8063fc6b48) locked @ /syzkaller/managers/multicore/kernel/sys/ufs/ufs/ufs_vnops.c:1547
#0 witness_lock+0x5a4 sys/kern/subr_witness.c:1201
#1 _rw_enter+0x43c sys/kern/kern_rwlock.c:280
#2 _rrw_enter+0x60 sys/kern/kern_rwlock.c:410
#3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602
#4 vn_lock+0x6e sys/kern/vfs_vnops.c:549
#5 vfs_lookup+0xec sys/kern/vfs_lookup.c:387
#6 namei+0x45f sys/kern/vfs_lookup.c:224
#7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1673
#8 syscall+0x576 mi_syscall sys/sys/syscall_mi.h:99 [inline]
#8 syscall+0x576 sys/arch/amd64/amd64/trap.c:574
#9 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim
devbuf 9540 6428K 6816K 78643K 12733 0 0
pcb 25 9K 11K 78643K 453 0 0
rtable 100 3K 4K 78643K 589 0 0
ifaddr 66 14K 15K 78643K 210 0 0
counters 39 33K 33K 78643K 39 0 0
ioctlops 0 0K 4K 78643K 1492 0 0
iov 0 0K 28K 78643K 133 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1192 75K 75K 78643K 2751 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 2 1K 5K 78643K 13 0 0
VM map 2 1K 1K 78643K 2 0 0
sem 12 0K 0K 78643K 132 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1808 196K 290K 78643K 12628 0 0
file desc 6 17K 25K 78643K 1480 0 0
sigio 0 0K 0K 78643K 21 0 0
proc 54 51K 83K 78643K 587 0 0
subproc 64 65538K 67586K 78643K 308 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
ip_moptions 0 0K 0K 78643K 73 0 0
in_multi 33 2K 2K 78643K 131 0 0
ether_multi 1 0K 0K 78643K 8 0 0
mrt 0 0K 0K 78643K 6 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 78 344K 344K 78643K 78 0 0
exec 0 0K 1K 78643K 491 0 0
pfkey data 0 0K 0K 78643K 2 0 0
pagedep 1 8K 8K 78643K 1 0 0
inodedep 1 32K 32K 78643K 1 0 0
newblk 1 0K 0K 78643K 1 0 0
VM swap 7 26K 26K 78643K 7 0 0
UVM amap 94 21K 30K 78643K 5368 0 0
UVM aobj 37 3K 3K 78643K 39 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
ip6_options 0 0K 0K 78643K 55 0 0
NDP 14 0K 0K 78643K 65 0 0
temp 185 2708K 2776K 78643K 7755 0 0
kqueue 0 0K 0K 78643K 2 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 11 0 7 1 0 1 1 0 8 0
inpcbpl 280 449 0 442 1 0 1 1 0 8 0
plimitpl 152 74 0 66 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtentry 112 105 0 65 2 0 2 2 0 8 0
syncache 264 4 0 4 1 1 0 1 0 8 0
tcpcb 544 146 0 142 1 0 1 1 0 8 0
rttmr 72 1 0 1 1 1 0 1 0 8 0
nd6 48 18 0 14 1 0 1 1 0 8 0
ppxss 1128 23 0 23 4 3 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 29 0 20 1 0 1 1 0 8 0
pfstkey 112 29 0 20 1 0 1 1 0 8 0
pfstate 328 29 0 20 2 0 2 2 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 256 490 0 299 12 0 12 12 0 8 0
art_table 32 491 0 299 2 0 2 2 0 8 0
art_node 16 104 0 70 1 0 1 1 0 8 0
sysvmsgpl 40 10 0 4 1 0 1 1 0 8 0
semapl 112 128 0 118 1 0 1 1 0 8 0
shmpl 112 37 0 2 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 4523 0 3087 47 0 47 47 0 8 0
ffsino 272 4523 0 3087 99 2 97 97 0 8 0
nchpl 144 6630 0 4996 62 0 62 62 0 8 0
uvmvnodes 72 5301 0 0 97 0 97 97 0 8 0
vnodes 200 5301 0 0 279 0 279 279 0 8 0
namei 1024 19114 0 19113 3 2 1 1 0 8 0
percpumem 16 30 0 0 1 0 1 1 0 8 0
scsiplug 64 2 0 2 2 2 0 1 0 8 0
scxspl 192 17982 0 17982 15 14 1 7 0 8 1
sigapl 432 1660 0 1644 3 1 2 3 0 8 0
futexpl 56 17002 0 17002 1 0 1 1 0 8 1
knotepl 112 382 0 363 1 0 1 1 0 8 0
kqueuepl 104 251 0 249 1 0 1 1 0 8 0
pipepl 112 776 0 757 4 3 1 2 0 8 0
fdescpl 488 1661 0 1644 3 0 3 3 0 8 0
filepl 152 8524 0 8417 9 4 5 7 0 8 0
lockfpl 104 724 0 724 2 1 1 1 0 8 1
lockfspl 32 312 0 312 2 1 1 1 0 8 1
sessionpl 112 27 0 16 1 0 1 1 0 8 0
pgrppl 48 38 0 27 1 0 1 1 0 8 0
ucredpl 96 1266 0 1257 1 0 1 1 0 8 0
zombiepl 144 1644 0 1644 3 2 1 1 0 8 1
processpl 840 1677 0 1644 4 0 4 4 0 8 0
procpl 600 4505 0 4460 4 0 4 4 0 8 0
srpgc 64 43 0 43 5 5 0 1 0 8 0
sosppl 128 7 0 7 1 1 0 1 0 8 0
sockpl 384 840 0 821 6 3 3 4 0 8 1
mcl64k 65536 6 0 0 1 0 1 1 0 8 0
mcl16k 16384 1 0 0 1 0 1 1 0 8 0
mcl12k 12288 4 0 0 1 0 1 1 0 8 0
mcl9k 9216 5 0 0 1 0 1 1 0 8 0
mcl8k 8192 5 0 0 1 0 1 1 0 8 0
mcl4k 4096 17 0 0 3 0 3 3 0 8 0
mcl2k2 2112 5 0 0 1 0 1 1 0 8 0
mcl2k 2048 140 0 0 17 2 15 17 0 8 0
mtagpl 80 1 0 0 1 0 1 1 0 8 0
mbufpl 256 198 0 0 9 0 9 9 0 8 0
bufpl 256 8547 0 1185 461 0 461 461 0 8 0
anonpl 16 159664 0 149069 80 33 47 60 0 125 2
amapchunkpl 152 9045 0 8926 27 19 8 15 0 158 2
amappl16 192 7459 0 6894 55 26 29 41 0 8 0
amappl15 184 412 0 408 1 0 1 1 0 8 0
amappl14 176 466 0 461 2 1 1 1 0 8 0
amappl13 168 155 0 155 2 2 0 1 0 8 0
amappl12 160 26 0 25 1 0 1 1 0 8 0
amappl11 152 43 0 25 1 0 1 1 0 8 0
amappl10 144 688 0 683 1 0 1 1 0 8 0
amappl9 136 617 0 614 1 0 1 1 0 8 0
amappl8 128 202 0 182 1 0 1 1 0 8 0
amappl7 120 664 0 658 1 0 1 1 0 8 0
amappl6 112 66 0 60 1 0 1 1 0 8 0
amappl5 104 131 0 117 1 0 1 1 0 8 0
amappl4 96 2053 0 2016 2 1 1 2 0 8 0
amappl3 88 560 0 553 1 0 1 1 0 8 0
amappl2 80 13674 0 13612 3 1 2 2 0 8 0
amappl1 72 43491 0 43043 26 16 10 20 0 8 0
amappl 72 4817 0 4775 1 0 1 1 0 75 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
dma64 64 259 0 259 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 17 0 17 1 1 0 1 0 8 0
aobjpl 64 38 0 2 1 0 1 1 0 8 0
uaddrrnd 24 1661 0 1644 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1661 0 1644 1 0 1 1 0 8 0
vmmpekpl 168 16878 0 16852 2 0 2 2 0 8 0
vmmpepl 168 180757 0 179109 146 66 80 90 0 357 6
vmsppl 360 1660 0 1644 2 0 2 2 0 8 0
pdppl 4096 3330 0 3288 6 0 6 6 0 8 0
pvpl 32 450459 0 436585 182 56 126 149 0 265 13
pmappl 232 1660 0 1644 2 1 1 2 0 8 0
extentpl 40 39 0 25 1 0 1 1 0 8 0
phpool 112 622 0 9 18 0 18 18 0 8 0