uvm_fault: ufsdirhash_lookup
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syzbot
Mar 26, 2026, 7:00:33 PM (11 days ago) Mar 26
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 9c6370df4fcd Add support for the RK3528 variant of the com..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=14b1d06a580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=d1662df96d7c0eca078f
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/5d15234fe7ea/disk-9c6370df.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/751cd58dd151/bsd-9c6370df.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/5cb3cfa8c27c/kernel-9c6370df.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d1662d...@syzkaller.appspotmail.com
uvm_fault(0xffffffff839e0920, 0xffff80001ab92c5c, 0, 1) -> d
kernel: page fault trap, code=0
Stopped at ufsdirhash_lookup+0x6d0: movzwl 0x4(%rax,%r14,1),%r12d
TID PID UID PRFLAGS PFLAGS CPU COMMAND
177476 83349 0 0 0 0 syz-executor
*161331 41129 0 0 0x4000000 1K syz-executor
ufsdirhash_lookup(fffffd800b09fcb8,ffff80002a233c05,5,fffffd800b09fd9c,ffff80003c411770,0) at ufsdirhash_lookup+0x6d0 sys/ufs/ufs/ufs_dirhash.c:407
ufs_lookup() at ufs_lookup+0xf76 sys/ufs/ufs/ufs_lookup.c:214
VOP_LOOKUP(fffffd800b0751b0,ffff80003c411bd8,ffff80003c411c08) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80003c411ba8) at vfs_lookup+0x98a sys/kern/vfs_lookup.c:567
namei(ffff80003c411ba8) at namei+0x7ca sys/kern/vfs_lookup.c:250
vn_open(ffff80003c411ba8,21,0) at vn_open+0x15a sys/kern/vfs_vnops.c:140
doopenat(ffff8000383d3a18,ffffff9c,200000000900,20,0,0,90b05e6bea3e2fa4) at doopenat+0x35b sys/kern/vfs_syscalls.c:1155
sys_openat(ffff8000383d3a18,ffff80003c411e60,ffff80003c411db0) at sys_openat+0x58 sys/kern/vfs_syscalls.c:1094
syscall(ffff80003c411e60) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c411e60) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9eb4fdad700, count: 5
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(0xffffffff839e0920, 0xffff80001ab92c5c, 0, 1) -> d
ddb{1}> trace
ufsdirhash_lookup(fffffd800b09fcb8,ffff80002a233c05,5,fffffd800b09fd9c,ffff80003c411770,0) at ufsdirhash_lookup+0x6d0 sys/ufs/ufs/ufs_dirhash.c:407
ufs_lookup() at ufs_lookup+0xf76 sys/ufs/ufs/ufs_lookup.c:214
VOP_LOOKUP(fffffd800b0751b0,ffff80003c411bd8,ffff80003c411c08) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80003c411ba8) at vfs_lookup+0x98a sys/kern/vfs_lookup.c:567
namei(ffff80003c411ba8) at namei+0x7ca sys/kern/vfs_lookup.c:250
vn_open(ffff80003c411ba8,21,0) at vn_open+0x15a sys/kern/vfs_vnops.c:140
doopenat(ffff8000383d3a18,ffffff9c,200000000900,20,0,0,90b05e6bea3e2fa4) at doopenat+0x35b sys/kern/vfs_syscalls.c:1155
sys_openat(ffff8000383d3a18,ffff80003c411e60,ffff80003c411db0) at sys_openat+0x58 sys/kern/vfs_syscalls.c:1094
syscall(ffff80003c411e60) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c411e60) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9eb4fdad700, count: -10
ddb{1}> show registers
rdi 0xffff80002f7ac000
rsi 0x57f
rbp 0xffff80003c411720
rbx 0xfffffd800b07b8c0
rdx 0xffff80002f7ac000
rcx 0x57e
rax 0xffff80001ab92000
r8 0xffffffffffffffff
r9 0
r10 0x1fd6f0aa0b4fd28a
r11 0x1e7147a554f9aecd
r12 0
r13 0xffff80001ab92000
r14 0xc58
r15 0x4c58 __ALIGN_SIZE+0x3c58
rip 0xffffffff82e1e3d0 ufsdirhash_lookup+0x6d0
cs 0x8
rflags 0x10202 __ALIGN_SIZE+0xf202
rsp 0xffff80003c411640
ss 0x10
ufsdirhash_lookup+0x6d0: movzwl 0x4(%rax,%r14,1),%r12d
ddb{1}> show proc
PROC (syz-executor) tid=161331 pid=41129 tcnt=2 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=32, usrpri=76, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff8000383d2fb8,0xffff8000383d3cc0
process=0xffff80002a39dcf8 user=0xffff80003c40c000, vmspace=0xfffffd806c8d65d0
estcpu=26, cpticks=102, pctcpu=1.1, user=0, sys=102, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
63592 481795 69770 0 2 0 syz-executor
63592 101126 69770 0 3 0x4000080 fsleep syz-executor
63592 117540 69770 0 3 0x4000080 fsleep syz-executor
83349 177476 75232 0 7 0 syz-executor
83349 95020 75232 0 3 0x4000080 fsleep syz-executor
83349 366260 75232 0 2 0x4000000 syz-executor
84283 228216 45447 0 2 0 syz-executor
84283 65173 45447 0 3 0x4000080 fsleep syz-executor
99307 174046 81607 0 2 0 syz-executor
99307 465311 81607 0 3 0x4000080 fsleep syz-executor
41129 308458 28018 0 2 0 syz-executor
*41129 161331 28018 0 7 0x4000000 syz-executor
21820 164219 47928 0 2 0x1 syz-executor
21820 496572 47928 0 3 0x4000081 kqsel syz-executor
45447 114348 8323 0 3 0x82 nanoslp syz-executor
75232 33433 8323 0 3 0x82 nanoslp syz-executor
28018 281375 8323 0 3 0x82 nanoslp syz-executor
47928 64370 8323 0 3 0x82 nanoslp syz-executor
69770 170791 8323 0 2 0x2 syz-executor
81607 511298 8323 0 3 0x82 nanoslp syz-executor
8323 446121 12905 0 3 0x82 wait syz-executor
12905 371567 53438 0 3 0x10008a sigsusp ksh
53438 145197 20245 0 3 0x98 kqread sshd-session
20245 474247 93178 0 3 0x92 kqread sshd-session
14653 454356 1 0 3 0x100083 ttyin getty
93178 262694 1 0 3 0x88 kqread sshd
2917 14145 14834 74 3 0x1100092 bpf pflogd
14834 155809 1 0 3 0x80 sbwait pflogd
67193 159356 13134 73 3 0x1100090 kqread syslogd
13134 465681 1 0 3 0x100082 sbwait syslogd
45050 23434 1 0 3 0x100080 kqread resolvd
97155 225414 97746 77 3 0x100092 kqread dhcpleased
75739 130848 97746 77 3 0x100092 kqread dhcpleased
97746 135640 1 0 3 0x80 kqread dhcpleased
59969 234225 0 0 3 0x14200 bored smr
42292 374230 0 0 2 0x14200 zerothread
4140 247677 0 0 3 0x14200 aiodoned aiodoned
25649 186640 0 0 3 0x14200 syncer update
40531 445492 0 0 3 0x14200 cleaner cleaner
54753 271973 0 0 3 0x14200 reaper reaper
4963 313664 0 0 3 0x14200 pgdaemon pagedaemon
84507 67608 0 0 3 0x14200 bored viomb
83123 406902 0 0 3 0x40014200 acpi0 acpi0
74397 289895 0 0 3 0x40014200 idle1
25638 366468 0 0 3 0x14200 bored softnet1
47414 43599 0 0 3 0x14200 bored softnet0
98640 191789 0 0 3 0x14200 bored systqmp
92539 523020 0 0 3 0x14200 bored systq
33427 361541 0 0 3 0x14200 tmoslp softclockmp
74669 185257 0 0 3 0x40014200 tmoslp softclock
25406 126717 0 0 3 0x40014200 idle0
1 391994 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 41129 (syz-executor) thread 0xffff8000383d3a18 (161331)
exclusive rrwlock inode r = 0 (0xfffffd800b09fd58)
#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:570
#5 vget+0x2a2 sys/kern/vfs_subr.c:686
#6 cache_lookup+0x351 sys/kern/vfs_cache.c:222
#7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160
#8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#9 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567
#10 namei+0x7ca sys/kern/vfs_lookup.c:250
#11 vn_open+0x15a sys/kern/vfs_vnops.c:140
#12 doopenat+0x35b sys/kern/vfs_syscalls.c:1155
#13 sys_openat+0x58 sys/kern/vfs_syscalls.c:1094
#14 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#14 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#15 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a3d200)
#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:1155
#2 sys_openat+0x58 sys/kern/vfs_syscalls.c:1094
#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
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11064 12091K 12474K 166960K 12421 0
pcb 17 12K 12K 166960K 50 0
rtable 199 8K 8K 166960K 386 0
pf 32 17K 21K 166960K 66 0
ifaddr 39 6K 8K 166960K 60 0
ifgroup 51 2K 2K 166960K 79 0
sysctl 3 1K 9K 166960K 7 0
counters 68 36K 38K 166960K 94 0
ioctlops 0 0K 4K 166960K 1530 0
iov 0 0K 12K 166960K 5 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1330 84K 84K 166960K 1572 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 20K 24K 166960K 8 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 20 0
dirhash 12 2K 2K 166960K 15 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 16 57K 232K 166960K 315 0
sigio 0 0K 0K 166960K 3 0
proc 72 115K 180K 166960K 564 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 1 0K 0K 166960K 12 0
in_multi 90 6K 7K 166960K 122 0
ether_multi 1 0K 0K 166960K 8 0
mrt 0 0K 0K 166960K 11 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 79 360K 360K 166960K 79 0
exec 0 0K 1K 166960K 395 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 223 159K 182K 166960K 4598 0
UVM aobj 7 4K 4K 166960K 7 0
pinsyscall 41 82K 104K 166960K 1439 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 7 0
NDP 11 0K 2K 166960K 34 0
temp 40 9079K 9143K 166960K 12167 0
kqueue 13 20K 30K 166960K 57 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 47 0 42 1 0 1 1 0 8 0
rtentry 176 119 0 32 6 0 6 6 0 8 0
unpcb 144 104 0 85 1 0 1 1 0 8 0
syncache 336 3 0 3 1 0 1 1 0 8 1
tcpcb 736 146 0 141 10 1 9 10 0 8 8
arp 136 19 0 2 1 0 1 1 0 8 0
inpcb 328 346 0 336 10 0 10 10 0 8 8
nd6 152 24 0 3 1 0 1 1 0 8 0
kcovpl 48 8 0 0 1 0 1 1 0 8 0
mppekey 1024 1 0 1 1 0 1 1 0 8 1
ppxss 1192 7 0 7 1 0 1 1 0 8 1
pppxif 1576 5 0 5 1 0 1 1 0 8 1
pffrag 232 3 0 2 1 0 1 1 0 482 0
pffrnode 88 3 0 2 1 0 1 1 0 8 0
pffrent 40 7 0 6 1 0 1 1 0 8 0
pfosfp 40 1429 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1429 0 714 21 0 21 21 0 8 0
pftag 88 1 0 1 1 0 1 1 0 8 1
pfstitem 24 30 0 0 1 0 1 1 0 8 0
pfstkey 128 30 0 0 1 0 1 1 0 8 0
pfstate 448 30 0 0 4 0 4 4 0 8 0
pfrule 1360 23 0 18 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 502 0 109 29 0 29 29 0 8 2
art_table 40 503 0 109 5 0 5 5 0 8 0
art_node 32 118 0 40 1 0 1 1 0 8 0
semapl 112 18 0 8 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 1924 0 454 93 0 93 93 0 8 0
ffsino 296 1925 0 455 114 0 114 114 0 8 0
nchpl 144 2329 0 623 64 0 64 64 0 8 0
vnodes 216 2135 0 0 119 0 119 119 0 8 0
namei 1024 7135 0 7134 2 0 2 2 0 8 1
percpumem 16 62 0 13 1 0 1 1 0 8 0
kstatmem 264 38 0 14 3 0 3 3 0 8 1
scsiplug 72 3 0 3 1 0 1 1 0 8 1
scxspl 216 16475 0 16475 9 1 8 8 1 8 8
plimitpl 152 53 0 36 1 0 1 1 0 8 0
sigapl 424 614 0 568 7 0 7 7 0 8 1
knotepl 120 522 0 0 16 0 16 16 0 8 0
kqueuepl 224 73 0 63 1 0 1 1 0 8 0
pipepl 344 133 0 106 3 0 3 3 0 8 0
fdescpl 528 598 0 568 3 0 3 3 0 8 0
filepl 160 2639 0 2416 14 0 14 14 0 8 4
lockfpl 104 138 0 136 1 0 1 1 0 8 0
lockfspl 48 66 0 64 1 0 1 1 0 8 0
sessionpl 144 26 0 16 1 0 1 1 0 8 0
pgrppl 48 36 0 18 1 0 1 1 0 8 0
ucredpl 104 251 0 238 1 0 1 1 0 8 0
zombiepl 144 570 0 568 1 0 1 1 0 8 0
processpl 1232 614 0 568 5 0 5 5 0 8 1
procpl 664 904 0 850 6 0 6 6 0 8 1
sockpl 752 499 0 465 14 2 12 14 0 8 8
mcl64k 65536 2 0 0 1 0 1 1 0 8 0
mcl8k 8192 3 0 0 1 0 1 1 0 8 0
mcl4k 4096 121 0 0 16 0 16 16 0 8 0
mcl2k 2048 23 0 0 3 0 3 3 0 8 0
mtagpl 96 6 0 0 1 0 1 1 0 8 0
mbufpl 256 210 0 0 14 0 14 14 0 8 0
bufpl 280 9030 0 762 594 0 594 594 0 8 1
anonpl 32 16447 0 0 133 0 133 133 0 246 0
amapchunkpl 152 14043 0 13605 33 0 33 33 0 158 13
amappl16 200 3416 0 3391 43 29 14 43 0 8 8
amappl15 192 83 0 83 1 1 0 1 0 8 0
amappl14 184 428 0 427 1 0 1 1 0 8 0
amappl13 176 117 0 105 1 0 1 1 0 8 0
amappl12 168 850 0 820 2 0 2 2 0 8 0
amappl11 160 6 0 6 2 2 0 1 0 8 0
amappl10 152 69 0 55 1 0 1 1 0 8 0
amappl9 144 261 0 261 1 1 0 1 0 8 0
amappl8 136 102 0 100 1 0 1 1 0 8 0
amappl7 128 144 0 131 1 0 1 1 0 8 0
amappl6 120 182 0 181 1 0 1 1 0 8 0
amappl5 112 98 0 87 1 0 1 1 0 8 0
amappl4 104 290 0 271 1 0 1 1 0 8 0
amappl3 96 2552 0 2449 4 0 4 4 0 8 0
amappl2 88 532 0 471 2 0 2 2 0 8 0
amappl1 80 9901 0 9300 16 1 15 15 0 8 2
amappl 88 3861 0 3709 6 1 5 5 0 92 0
uvmvnodes 80 101 0 0 3 0 3 3 0 8 0
dma16384 16384 1 0 1 1 0 1 1 0 8 1
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 128 255 0 255 2 1 1 1 0 8 1
dma64 64 7 0 7 2 1 1 1 0 8 1
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 24 598 0 568 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 598 0 568 1 0 1 1 0 8 0
vmmpekpl 168 6582 0 6544 2 0 2 2 0 8 0
vmmpepl 168 46756 0 44911 120 0 120 120 0 357 16
vmsppl 488 597 0 568 5 0 5 5 0 8 1
rwobjpl 80 16861 0 15847 38 0 38 38 0 8 8
pdppl 4096 1203 0 1136 97 24 73 85 0 8 6
pvpl 32 28589 0 0 231 0 231 231 0 265 0
pmappl 256 597 0 568 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 285 0 28 8 0 8 8 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff838c4ff0) 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
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x38 sys/dev/kcov.c:-1
__mp_lock(ffffffff83a3ca00) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a3ca00) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173
softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
end of kernel
end trace frame: 0x7b192b23a1a0, count: 7
ddb{0}> trace
x86_ipi_db(ffffffff838c4ff0) 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
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x38 sys/dev/kcov.c:-1
__mp_lock(ffffffff83a3ca00) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a3ca00) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173
softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
end of kernel
end trace frame: 0x7b192b23a1a0, count: -8
ddb{0}> machine ddbcpu 1
Stopped at ufsdirhash_lookup+0x6d0: movzwl 0x4(%rax,%r14,1),%r12d
ufsdirhash_lookup(fffffd800b09fcb8,ffff80002a233c05,5,fffffd800b09fd9c,ffff80003c411770,0) at ufsdirhash_lookup+0x6d0 sys/ufs/ufs/ufs_dirhash.c:407
ufs_lookup() at ufs_lookup+0xf76 sys/ufs/ufs/ufs_lookup.c:214
VOP_LOOKUP(fffffd800b0751b0,ffff80003c411bd8,ffff80003c411c08) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80003c411ba8) at vfs_lookup+0x98a sys/kern/vfs_lookup.c:567
namei(ffff80003c411ba8) at namei+0x7ca sys/kern/vfs_lookup.c:250
vn_open(ffff80003c411ba8,21,0) at vn_open+0x15a sys/kern/vfs_vnops.c:140
doopenat(ffff8000383d3a18,ffffff9c,200000000900,20,0,0,90b05e6bea3e2fa4) at doopenat+0x35b sys/kern/vfs_syscalls.c:1155
sys_openat(ffff8000383d3a18,ffff80003c411e60,ffff80003c411db0) at sys_openat+0x58 sys/kern/vfs_syscalls.c:1094
syscall(ffff80003c411e60) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c411e60) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9eb4fdad700, count: 5
ddb{1}> trace
ufsdirhash_lookup(fffffd800b09fcb8,ffff80002a233c05,5,fffffd800b09fd9c,ffff80003c411770,0) at ufsdirhash_lookup+0x6d0 sys/ufs/ufs/ufs_dirhash.c:407
ufs_lookup() at ufs_lookup+0xf76 sys/ufs/ufs/ufs_lookup.c:214
VOP_LOOKUP(fffffd800b0751b0,ffff80003c411bd8,ffff80003c411c08) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80003c411ba8) at vfs_lookup+0x98a sys/kern/vfs_lookup.c:567
namei(ffff80003c411ba8) at namei+0x7ca sys/kern/vfs_lookup.c:250
vn_open(ffff80003c411ba8,21,0) at vn_open+0x15a sys/kern/vfs_vnops.c:140
doopenat(ffff8000383d3a18,ffffff9c,200000000900,20,0,0,90b05e6bea3e2fa4) at doopenat+0x35b sys/kern/vfs_syscalls.c:1155
sys_openat(ffff8000383d3a18,ffff80003c411e60,ffff80003c411db0) at sys_openat+0x58 sys/kern/vfs_syscalls.c:1094
syscall(ffff80003c411e60) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c411e60) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9eb4fdad700, count: -10
---
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syzbot found the following issue on:
HEAD commit: 9c6370df4fcd Add support for the RK3528 variant of the com..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=14b1d06a580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=d1662df96d7c0eca078f
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/5d15234fe7ea/disk-9c6370df.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/751cd58dd151/bsd-9c6370df.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/5cb3cfa8c27c/kernel-9c6370df.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d1662d...@syzkaller.appspotmail.com
uvm_fault(0xffffffff839e0920, 0xffff80001ab92c5c, 0, 1) -> d
kernel: page fault trap, code=0
Stopped at ufsdirhash_lookup+0x6d0: movzwl 0x4(%rax,%r14,1),%r12d
TID PID UID PRFLAGS PFLAGS CPU COMMAND
177476 83349 0 0 0 0 syz-executor
*161331 41129 0 0 0x4000000 1K syz-executor
ufsdirhash_lookup(fffffd800b09fcb8,ffff80002a233c05,5,fffffd800b09fd9c,ffff80003c411770,0) at ufsdirhash_lookup+0x6d0 sys/ufs/ufs/ufs_dirhash.c:407
ufs_lookup() at ufs_lookup+0xf76 sys/ufs/ufs/ufs_lookup.c:214
VOP_LOOKUP(fffffd800b0751b0,ffff80003c411bd8,ffff80003c411c08) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80003c411ba8) at vfs_lookup+0x98a sys/kern/vfs_lookup.c:567
namei(ffff80003c411ba8) at namei+0x7ca sys/kern/vfs_lookup.c:250
vn_open(ffff80003c411ba8,21,0) at vn_open+0x15a sys/kern/vfs_vnops.c:140
doopenat(ffff8000383d3a18,ffffff9c,200000000900,20,0,0,90b05e6bea3e2fa4) at doopenat+0x35b sys/kern/vfs_syscalls.c:1155
sys_openat(ffff8000383d3a18,ffff80003c411e60,ffff80003c411db0) at sys_openat+0x58 sys/kern/vfs_syscalls.c:1094
syscall(ffff80003c411e60) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c411e60) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9eb4fdad700, count: 5
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(0xffffffff839e0920, 0xffff80001ab92c5c, 0, 1) -> d
ddb{1}> trace
ufsdirhash_lookup(fffffd800b09fcb8,ffff80002a233c05,5,fffffd800b09fd9c,ffff80003c411770,0) at ufsdirhash_lookup+0x6d0 sys/ufs/ufs/ufs_dirhash.c:407
ufs_lookup() at ufs_lookup+0xf76 sys/ufs/ufs/ufs_lookup.c:214
VOP_LOOKUP(fffffd800b0751b0,ffff80003c411bd8,ffff80003c411c08) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80003c411ba8) at vfs_lookup+0x98a sys/kern/vfs_lookup.c:567
namei(ffff80003c411ba8) at namei+0x7ca sys/kern/vfs_lookup.c:250
vn_open(ffff80003c411ba8,21,0) at vn_open+0x15a sys/kern/vfs_vnops.c:140
doopenat(ffff8000383d3a18,ffffff9c,200000000900,20,0,0,90b05e6bea3e2fa4) at doopenat+0x35b sys/kern/vfs_syscalls.c:1155
sys_openat(ffff8000383d3a18,ffff80003c411e60,ffff80003c411db0) at sys_openat+0x58 sys/kern/vfs_syscalls.c:1094
syscall(ffff80003c411e60) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c411e60) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9eb4fdad700, count: -10
ddb{1}> show registers
rdi 0xffff80002f7ac000
rsi 0x57f
rbp 0xffff80003c411720
rbx 0xfffffd800b07b8c0
rdx 0xffff80002f7ac000
rcx 0x57e
rax 0xffff80001ab92000
r8 0xffffffffffffffff
r9 0
r10 0x1fd6f0aa0b4fd28a
r11 0x1e7147a554f9aecd
r12 0
r13 0xffff80001ab92000
r14 0xc58
r15 0x4c58 __ALIGN_SIZE+0x3c58
rip 0xffffffff82e1e3d0 ufsdirhash_lookup+0x6d0
cs 0x8
rflags 0x10202 __ALIGN_SIZE+0xf202
rsp 0xffff80003c411640
ss 0x10
ufsdirhash_lookup+0x6d0: movzwl 0x4(%rax,%r14,1),%r12d
ddb{1}> show proc
PROC (syz-executor) tid=161331 pid=41129 tcnt=2 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=32, usrpri=76, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff8000383d2fb8,0xffff8000383d3cc0
process=0xffff80002a39dcf8 user=0xffff80003c40c000, vmspace=0xfffffd806c8d65d0
estcpu=26, cpticks=102, pctcpu=1.1, user=0, sys=102, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
63592 481795 69770 0 2 0 syz-executor
63592 101126 69770 0 3 0x4000080 fsleep syz-executor
63592 117540 69770 0 3 0x4000080 fsleep syz-executor
83349 177476 75232 0 7 0 syz-executor
83349 95020 75232 0 3 0x4000080 fsleep syz-executor
83349 366260 75232 0 2 0x4000000 syz-executor
84283 228216 45447 0 2 0 syz-executor
84283 65173 45447 0 3 0x4000080 fsleep syz-executor
99307 174046 81607 0 2 0 syz-executor
99307 465311 81607 0 3 0x4000080 fsleep syz-executor
41129 308458 28018 0 2 0 syz-executor
*41129 161331 28018 0 7 0x4000000 syz-executor
21820 164219 47928 0 2 0x1 syz-executor
21820 496572 47928 0 3 0x4000081 kqsel syz-executor
45447 114348 8323 0 3 0x82 nanoslp syz-executor
75232 33433 8323 0 3 0x82 nanoslp syz-executor
28018 281375 8323 0 3 0x82 nanoslp syz-executor
47928 64370 8323 0 3 0x82 nanoslp syz-executor
69770 170791 8323 0 2 0x2 syz-executor
81607 511298 8323 0 3 0x82 nanoslp syz-executor
8323 446121 12905 0 3 0x82 wait syz-executor
12905 371567 53438 0 3 0x10008a sigsusp ksh
53438 145197 20245 0 3 0x98 kqread sshd-session
20245 474247 93178 0 3 0x92 kqread sshd-session
14653 454356 1 0 3 0x100083 ttyin getty
93178 262694 1 0 3 0x88 kqread sshd
2917 14145 14834 74 3 0x1100092 bpf pflogd
14834 155809 1 0 3 0x80 sbwait pflogd
67193 159356 13134 73 3 0x1100090 kqread syslogd
13134 465681 1 0 3 0x100082 sbwait syslogd
45050 23434 1 0 3 0x100080 kqread resolvd
97155 225414 97746 77 3 0x100092 kqread dhcpleased
75739 130848 97746 77 3 0x100092 kqread dhcpleased
97746 135640 1 0 3 0x80 kqread dhcpleased
59969 234225 0 0 3 0x14200 bored smr
42292 374230 0 0 2 0x14200 zerothread
4140 247677 0 0 3 0x14200 aiodoned aiodoned
25649 186640 0 0 3 0x14200 syncer update
40531 445492 0 0 3 0x14200 cleaner cleaner
54753 271973 0 0 3 0x14200 reaper reaper
4963 313664 0 0 3 0x14200 pgdaemon pagedaemon
84507 67608 0 0 3 0x14200 bored viomb
83123 406902 0 0 3 0x40014200 acpi0 acpi0
74397 289895 0 0 3 0x40014200 idle1
25638 366468 0 0 3 0x14200 bored softnet1
47414 43599 0 0 3 0x14200 bored softnet0
98640 191789 0 0 3 0x14200 bored systqmp
92539 523020 0 0 3 0x14200 bored systq
33427 361541 0 0 3 0x14200 tmoslp softclockmp
74669 185257 0 0 3 0x40014200 tmoslp softclock
25406 126717 0 0 3 0x40014200 idle0
1 391994 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 41129 (syz-executor) thread 0xffff8000383d3a18 (161331)
exclusive rrwlock inode r = 0 (0xfffffd800b09fd58)
#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:570
#5 vget+0x2a2 sys/kern/vfs_subr.c:686
#6 cache_lookup+0x351 sys/kern/vfs_cache.c:222
#7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160
#8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#9 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567
#10 namei+0x7ca sys/kern/vfs_lookup.c:250
#11 vn_open+0x15a sys/kern/vfs_vnops.c:140
#12 doopenat+0x35b sys/kern/vfs_syscalls.c:1155
#13 sys_openat+0x58 sys/kern/vfs_syscalls.c:1094
#14 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#14 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#15 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a3d200)
#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:1155
#2 sys_openat+0x58 sys/kern/vfs_syscalls.c:1094
#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
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11064 12091K 12474K 166960K 12421 0
pcb 17 12K 12K 166960K 50 0
rtable 199 8K 8K 166960K 386 0
pf 32 17K 21K 166960K 66 0
ifaddr 39 6K 8K 166960K 60 0
ifgroup 51 2K 2K 166960K 79 0
sysctl 3 1K 9K 166960K 7 0
counters 68 36K 38K 166960K 94 0
ioctlops 0 0K 4K 166960K 1530 0
iov 0 0K 12K 166960K 5 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1330 84K 84K 166960K 1572 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 20K 24K 166960K 8 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 20 0
dirhash 12 2K 2K 166960K 15 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 16 57K 232K 166960K 315 0
sigio 0 0K 0K 166960K 3 0
proc 72 115K 180K 166960K 564 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 1 0K 0K 166960K 12 0
in_multi 90 6K 7K 166960K 122 0
ether_multi 1 0K 0K 166960K 8 0
mrt 0 0K 0K 166960K 11 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 79 360K 360K 166960K 79 0
exec 0 0K 1K 166960K 395 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 223 159K 182K 166960K 4598 0
UVM aobj 7 4K 4K 166960K 7 0
pinsyscall 41 82K 104K 166960K 1439 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 7 0
NDP 11 0K 2K 166960K 34 0
temp 40 9079K 9143K 166960K 12167 0
kqueue 13 20K 30K 166960K 57 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 47 0 42 1 0 1 1 0 8 0
rtentry 176 119 0 32 6 0 6 6 0 8 0
unpcb 144 104 0 85 1 0 1 1 0 8 0
syncache 336 3 0 3 1 0 1 1 0 8 1
tcpcb 736 146 0 141 10 1 9 10 0 8 8
arp 136 19 0 2 1 0 1 1 0 8 0
inpcb 328 346 0 336 10 0 10 10 0 8 8
nd6 152 24 0 3 1 0 1 1 0 8 0
kcovpl 48 8 0 0 1 0 1 1 0 8 0
mppekey 1024 1 0 1 1 0 1 1 0 8 1
ppxss 1192 7 0 7 1 0 1 1 0 8 1
pppxif 1576 5 0 5 1 0 1 1 0 8 1
pffrag 232 3 0 2 1 0 1 1 0 482 0
pffrnode 88 3 0 2 1 0 1 1 0 8 0
pffrent 40 7 0 6 1 0 1 1 0 8 0
pfosfp 40 1429 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1429 0 714 21 0 21 21 0 8 0
pftag 88 1 0 1 1 0 1 1 0 8 1
pfstitem 24 30 0 0 1 0 1 1 0 8 0
pfstkey 128 30 0 0 1 0 1 1 0 8 0
pfstate 448 30 0 0 4 0 4 4 0 8 0
pfrule 1360 23 0 18 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 502 0 109 29 0 29 29 0 8 2
art_table 40 503 0 109 5 0 5 5 0 8 0
art_node 32 118 0 40 1 0 1 1 0 8 0
semapl 112 18 0 8 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 1924 0 454 93 0 93 93 0 8 0
ffsino 296 1925 0 455 114 0 114 114 0 8 0
nchpl 144 2329 0 623 64 0 64 64 0 8 0
vnodes 216 2135 0 0 119 0 119 119 0 8 0
namei 1024 7135 0 7134 2 0 2 2 0 8 1
percpumem 16 62 0 13 1 0 1 1 0 8 0
kstatmem 264 38 0 14 3 0 3 3 0 8 1
scsiplug 72 3 0 3 1 0 1 1 0 8 1
scxspl 216 16475 0 16475 9 1 8 8 1 8 8
plimitpl 152 53 0 36 1 0 1 1 0 8 0
sigapl 424 614 0 568 7 0 7 7 0 8 1
knotepl 120 522 0 0 16 0 16 16 0 8 0
kqueuepl 224 73 0 63 1 0 1 1 0 8 0
pipepl 344 133 0 106 3 0 3 3 0 8 0
fdescpl 528 598 0 568 3 0 3 3 0 8 0
filepl 160 2639 0 2416 14 0 14 14 0 8 4
lockfpl 104 138 0 136 1 0 1 1 0 8 0
lockfspl 48 66 0 64 1 0 1 1 0 8 0
sessionpl 144 26 0 16 1 0 1 1 0 8 0
pgrppl 48 36 0 18 1 0 1 1 0 8 0
ucredpl 104 251 0 238 1 0 1 1 0 8 0
zombiepl 144 570 0 568 1 0 1 1 0 8 0
processpl 1232 614 0 568 5 0 5 5 0 8 1
procpl 664 904 0 850 6 0 6 6 0 8 1
sockpl 752 499 0 465 14 2 12 14 0 8 8
mcl64k 65536 2 0 0 1 0 1 1 0 8 0
mcl8k 8192 3 0 0 1 0 1 1 0 8 0
mcl4k 4096 121 0 0 16 0 16 16 0 8 0
mcl2k 2048 23 0 0 3 0 3 3 0 8 0
mtagpl 96 6 0 0 1 0 1 1 0 8 0
mbufpl 256 210 0 0 14 0 14 14 0 8 0
bufpl 280 9030 0 762 594 0 594 594 0 8 1
anonpl 32 16447 0 0 133 0 133 133 0 246 0
amapchunkpl 152 14043 0 13605 33 0 33 33 0 158 13
amappl16 200 3416 0 3391 43 29 14 43 0 8 8
amappl15 192 83 0 83 1 1 0 1 0 8 0
amappl14 184 428 0 427 1 0 1 1 0 8 0
amappl13 176 117 0 105 1 0 1 1 0 8 0
amappl12 168 850 0 820 2 0 2 2 0 8 0
amappl11 160 6 0 6 2 2 0 1 0 8 0
amappl10 152 69 0 55 1 0 1 1 0 8 0
amappl9 144 261 0 261 1 1 0 1 0 8 0
amappl8 136 102 0 100 1 0 1 1 0 8 0
amappl7 128 144 0 131 1 0 1 1 0 8 0
amappl6 120 182 0 181 1 0 1 1 0 8 0
amappl5 112 98 0 87 1 0 1 1 0 8 0
amappl4 104 290 0 271 1 0 1 1 0 8 0
amappl3 96 2552 0 2449 4 0 4 4 0 8 0
amappl2 88 532 0 471 2 0 2 2 0 8 0
amappl1 80 9901 0 9300 16 1 15 15 0 8 2
amappl 88 3861 0 3709 6 1 5 5 0 92 0
uvmvnodes 80 101 0 0 3 0 3 3 0 8 0
dma16384 16384 1 0 1 1 0 1 1 0 8 1
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 128 255 0 255 2 1 1 1 0 8 1
dma64 64 7 0 7 2 1 1 1 0 8 1
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 24 598 0 568 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 598 0 568 1 0 1 1 0 8 0
vmmpekpl 168 6582 0 6544 2 0 2 2 0 8 0
vmmpepl 168 46756 0 44911 120 0 120 120 0 357 16
vmsppl 488 597 0 568 5 0 5 5 0 8 1
rwobjpl 80 16861 0 15847 38 0 38 38 0 8 8
pdppl 4096 1203 0 1136 97 24 73 85 0 8 6
pvpl 32 28589 0 0 231 0 231 231 0 265 0
pmappl 256 597 0 568 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 285 0 28 8 0 8 8 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff838c4ff0) 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
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x38 sys/dev/kcov.c:-1
__mp_lock(ffffffff83a3ca00) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a3ca00) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173
softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
end of kernel
end trace frame: 0x7b192b23a1a0, count: 7
ddb{0}> trace
x86_ipi_db(ffffffff838c4ff0) 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
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x38 sys/dev/kcov.c:-1
__mp_lock(ffffffff83a3ca00) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a3ca00) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173
softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
end of kernel
end trace frame: 0x7b192b23a1a0, count: -8
ddb{0}> machine ddbcpu 1
Stopped at ufsdirhash_lookup+0x6d0: movzwl 0x4(%rax,%r14,1),%r12d
ufsdirhash_lookup(fffffd800b09fcb8,ffff80002a233c05,5,fffffd800b09fd9c,ffff80003c411770,0) at ufsdirhash_lookup+0x6d0 sys/ufs/ufs/ufs_dirhash.c:407
ufs_lookup() at ufs_lookup+0xf76 sys/ufs/ufs/ufs_lookup.c:214
VOP_LOOKUP(fffffd800b0751b0,ffff80003c411bd8,ffff80003c411c08) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80003c411ba8) at vfs_lookup+0x98a sys/kern/vfs_lookup.c:567
namei(ffff80003c411ba8) at namei+0x7ca sys/kern/vfs_lookup.c:250
vn_open(ffff80003c411ba8,21,0) at vn_open+0x15a sys/kern/vfs_vnops.c:140
doopenat(ffff8000383d3a18,ffffff9c,200000000900,20,0,0,90b05e6bea3e2fa4) at doopenat+0x35b sys/kern/vfs_syscalls.c:1155
sys_openat(ffff8000383d3a18,ffff80003c411e60,ffff80003c411db0) at sys_openat+0x58 sys/kern/vfs_syscalls.c:1094
syscall(ffff80003c411e60) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c411e60) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9eb4fdad700, count: 5
ddb{1}> trace
ufsdirhash_lookup(fffffd800b09fcb8,ffff80002a233c05,5,fffffd800b09fd9c,ffff80003c411770,0) at ufsdirhash_lookup+0x6d0 sys/ufs/ufs/ufs_dirhash.c:407
ufs_lookup() at ufs_lookup+0xf76 sys/ufs/ufs/ufs_lookup.c:214
VOP_LOOKUP(fffffd800b0751b0,ffff80003c411bd8,ffff80003c411c08) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80003c411ba8) at vfs_lookup+0x98a sys/kern/vfs_lookup.c:567
namei(ffff80003c411ba8) at namei+0x7ca sys/kern/vfs_lookup.c:250
vn_open(ffff80003c411ba8,21,0) at vn_open+0x15a sys/kern/vfs_vnops.c:140
doopenat(ffff8000383d3a18,ffffff9c,200000000900,20,0,0,90b05e6bea3e2fa4) at doopenat+0x35b sys/kern/vfs_syscalls.c:1155
sys_openat(ffff8000383d3a18,ffff80003c411e60,ffff80003c411db0) at sys_openat+0x58 sys/kern/vfs_syscalls.c:1094
syscall(ffff80003c411e60) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c411e60) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x9eb4fdad700, count: -10
---
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