uvm_fault(0xfffff080726bf5d8, 0x100000274, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at ufsdirhash_lookup+0x53d: movl 0(%rax,%rcx,4),%r15d
TID PID UID PRFLAGS PFLAGS CPU COMMAND
161270 38458 32767 0x10 0 1 syz-executor
*221968 38458 32767 0x10 0x4000000 0K syz-executor
ufsdirhash_lookup(fffff08067ed1e28,ffff80002a214c02,f6,fffff08067ed1f0c,ffff80002a322750,0) at ufsdirhash_lookup+0x53d sys/ufs/ufs/ufs_dirhash.c:391
ufs_lookup() at ufs_lookup+0xf76 sys/ufs/ufs/ufs_lookup.c:214
VOP_LOOKUP(fffff0807a0701d8,ffff80002a322bc8,ffff80002a322bf8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80002a322b98) at vfs_lookup+0x9e3 sys/kern/vfs_lookup.c:585
namei(ffff80002a322b98) at namei+0x7c1 sys/kern/vfs_lookup.c:250
vn_open(ffff80002a322b98,2,0) at vn_open+0x178 sys/kern/vfs_vnops.c:146
doopenat(ffff8000333967e8,ffffff9c,200000000440,1,0,0,e895f68dc90512d8) at doopenat+0x35b sys/kern/vfs_syscalls.c:1163
sys_open(ffff8000333967e8,ffff80002a322e50,ffff80002a322da0) at sys_open+0x59 sys/kern/vfs_syscalls.c:1065
syscall(ffff80002a322e50) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a322e50) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:791
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x12108482d90, 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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: uvm_fault(0xfffff080726bf5d8, 0x100000274, 0, 1) -> e
ddb{0}> show kasan
No such command
ddb{0}> trace
ufsdirhash_lookup(fffff08067ed1e28,ffff80002a214c02,f6,fffff08067ed1f0c,ffff80002a322750,0) at ufsdirhash_lookup+0x53d sys/ufs/ufs/ufs_dirhash.c:391
ufs_lookup() at ufs_lookup+0xf76 sys/ufs/ufs/ufs_lookup.c:214
VOP_LOOKUP(fffff0807a0701d8,ffff80002a322bc8,ffff80002a322bf8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80002a322b98) at vfs_lookup+0x9e3 sys/kern/vfs_lookup.c:585
namei(ffff80002a322b98) at namei+0x7c1 sys/kern/vfs_lookup.c:250
vn_open(ffff80002a322b98,2,0) at vn_open+0x178 sys/kern/vfs_vnops.c:146
doopenat(ffff8000333967e8,ffffff9c,200000000440,1,0,0,e895f68dc90512d8) at doopenat+0x35b sys/kern/vfs_syscalls.c:1163
sys_open(ffff8000333967e8,ffff80002a322e50,ffff80002a322da0) at sys_open+0x59 sys/kern/vfs_syscalls.c:1065
syscall(ffff80002a322e50) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a322e50) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:791
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x12108482d90, count: -10
ddb{0}> show registers
rdi 0xffff80002e371000
rsi 0x45f
rbp 0xffff80002a322700
rbx 0xffff800000c43b00
rdx 0xffff80002e371000
rcx 0x8d
rax 0x100000040
r8 0x30
r9 0
r10 0xcb8341e57a41a4ef
r11 0x75d41fa1a29c24ca
r12 0x200
r13 0xffff8000016e0e00
r14 0x8d
r15 0x200
rip 0xffffffff812d13cd ufsdirhash_lookup+0x53d
cs 0x8
rflags 0x10247 __ALIGN_SIZE+0xf247
rsp 0xffff80002a322620
ss 0x10
ufsdirhash_lookup+0x53d: movl 0(%rax,%rcx,4),%r15d
ddb{0}> show proc
PROC (syz-executor) tid=221968 pid=38458 tcnt=3 stat=onproc
flags process=10<SUGID> proc=4000000<THREAD>
runpri=32, usrpri=78, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002a222010,0xffff800045feea88
process=0xffff800045feabb0 user=0xffff80002a31d000, vmspace=0xfffff080726bf5d8
estcpu=28, cpticks=14, pctcpu=0.0, user=0, sys=14, intr=0
ddb{0}> ps
PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND
1197 300699 93341 0 3 0x2 0 clonelk ifconfig
93341 172265 89907 0 3 0x100002 0x88 sigsusp sh
89907 362612 87161 0 3 0 0x80 wait syz-executor
87161 343054 84047 0 3 0x2 0x80 wait syz-executor
38458 161270 49322 32767 7 0x10 0 syz-executor
*38458 221968 49322 32767 7 0x10 0x4000000 syz-executor
38458 176353 49322 32767 3 0x10 0x4000080 fsleep syz-executor
23728 116437 90570 32767 3 0x10 0x80 piperd syz-executor
90570 43528 84047 0 3 0x2 0x80 wait syz-executor
49322 133106 42360 32767 3 0x10 0x80 nanoslp syz-executor
42360 516961 84047 0 3 0x2 0x80 wait syz-executor
16929 500814 2018 32767 3 0x10 0x80 piperd syz-executor
2018 243085 84047 0 3 0x2 0x80 wait syz-executor
25912 455190 84047 0 3 0x2 0x80 wait syz-executor
75722 230682 47946 0 3 0x100002 0x80 sbwait ndp
47946 119883 26259 0 3 0x100002 0x88 sigsusp sh
43333 348310 28162 32767 3 0x10 0x80 piperd syz-executor
26259 396918 31498 0 3 0 0x80 wait syz-executor
28162 36155 84047 0 3 0x2 0x80 wait syz-executor
31498 213725 84047 0 3 0x2 0x80 wait syz-executor
84047 61841 21954 0 3 0x2 0x80 nanoslp syz-executor
21954 179195 44470 0 3 0x100002 0x88 sigsusp ksh
44470 218288 49618 0 3 0x10 0x88 kqread sshd-session
49618 235266 17012 0 3 0x12 0x80 kqread sshd-session
18287 91865 1 0 3 0x100003 0x80 ttyin getty
17012 211770 1 0 3 0 0x88 kqread sshd
11760 187817 37211 73 3 0x1100010 0x80 kqread syslogd
37211 500239 1 0 3 0x100002 0x80 sbwait syslogd
63774 483912 1 0 3 0x100000 0x80 kqread resolvd
74001 444343 53632 77 3 0x100012 0x80 kqread dhcpleased
96982 407707 53632 77 3 0x100012 0x80 kqread dhcpleased
53632 141942 1 0 3 0 0x80 kqread dhcpleased
10751 217830 0 0 3 0x14000 0x200 bored smr
90723 60717 0 0 3 0x14000 0x200 pgzero zerothread
23760 311202 0 0 3 0x14000 0x200 aiodoned aiodoned
73722 308735 0 0 3 0x14000 0x200 syncer update
84938 115329 0 0 3 0x14000 0x200 cleaner cleaner
27373 152479 0 0 3 0x14000 0x200 reaper reaper
25301 321215 0 0 3 0x14000 0x200 pgdaemon pagedaemon
41078 394335 0 0 3 0x14000 0x200 bored viomb
96184 350669 0 0 3 0x14000 0x40000200 acpi0 acpi0
82810 90710 0 0 3 0x14000 0x40000200 idle1
5792 176171 0 0 3 0x14000 0x200 bored softnet1
65443 464762 0 0 3 0x14000 0x200 bored softnet0
70302 317935 0 0 3 0x14000 0x200 smrbar systqmp
38819 221925 0 0 3 0x14000 0x200 bored systq
8569 185377 0 0 3 0x14000 0x200 tmoslp softclockmp
2089 459940 0 0 3 0x14000 0x40000200 tmoslp softclock
76325 261844 0 0 3 0x14000 0x40000200 idle0
1 273317 0 0 3 0x2 0x80 wait init
0 0 -1 0 3 0x10000 0x200 scheduler swapper
ddb{0}> show all locks
Process 38458 (syz-executor) thread 0xffff8000333967e8 (221968)
exclusive rwlock dirhash r = 0 (0xffff8000016e0e18)
#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 ufsdirhash_lookup+0x13a sys/ufs/ufs/ufs_dirhash.c:352
#3 ufs_lookup+0xf76 sys/ufs/ufs/ufs_lookup.c:214
#4 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#5 vfs_lookup+0x9e3 sys/kern/vfs_lookup.c:585
#6 namei+0x7c1 sys/kern/vfs_lookup.c:250
#7 vn_open+0x178 sys/kern/vfs_vnops.c:146
#8 doopenat+0x35b sys/kern/vfs_syscalls.c:1163
#9 sys_open+0x59 sys/kern/vfs_syscalls.c:1065
#10 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:791
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffff08067ed1ec8)
#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+0x7c1 sys/kern/vfs_lookup.c:250
#7 vn_open+0x178 sys/kern/vfs_vnops.c:146
#8 doopenat+0x35b sys/kern/vfs_syscalls.c:1163
#9 sys_open+0x59 sys/kern/vfs_syscalls.c:1065
#10 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:791
#11 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a1e240)
#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:791
#4 Xsyscall+0x128
Process 70302 (systqmp) thread 0xffff800045ffe530 (317935)
shared rwlock systqmp r = 0 (0xffffffff8392b898)
#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{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11072 12017K 12034K 166960K 12207 0
pcb 17 12K 12K 166960K 17 0
rtable 191 5K 7K 166960K 723 0
pf 27 16K 16K 166960K 55 0
ifaddr 34 6K 7K 166960K 94 0
ifgroup 42 1K 2K 166960K 98 0
sysctl 4 1K 9K 166960K 10 0
counters 66 36K 37K 166960K 94 0
ioctlops 0 0K 4K 166960K 51 0
iov 0 0K 4K 166960K 9 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1288 81K 81K 166960K 1660 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 9K 166960K 8 0
VM map 2 1K 1K 166960K 2 0
sem 17 2K 2K 166960K 18 0
dirhash 18 3K 3K 166960K 21 0
ACPI 1734 201K 291K 166960K 11964 0
file desc 21 77K 129K 166960K 591 0
sigio 0 0K 0K 166960K 1 0
proc 65 115K 147K 166960K 872 0
subproc 63 3K 4K 166960K 360 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 22 0
in_multi 77 5K 6K 166960K 241 0
ether_multi 1 0K 0K 166960K 4 0
mrt 0 0K 0K 166960K 17 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 229 1023K 1023K 166960K 229 0
exec 0 0K 1K 166960K 579 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 200 137K 187K 166960K 6146 0
UVM aobj 18 2K 2K 166960K 18 0
pinsyscall 43 86K 117K 166960K 2027 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 9 0K 2K 166960K 63 0
temp 36 9123K 9182K 166960K 5702 0
kqueue 14 20K 30K 166960K 55 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 84 0 80 1 0 1 1 0 8 0
rtentry 176 245 0 158 6 1 5 6 0 8 0
unpcb 144 273 0 258 6 4 2 6 0 8 1
syncache 336 9 0 9 1 0 1 1 0 8 1
tcpqe 32 4 0 4 1 1 0 1 0 8 0
tcpcb 736 161 0 157 8 5 3 8 0 8 2
arp 136 42 0 28 1 0 1 1 0 8 0
ipq 40 2 0 0 1 0 1 1 0 8 0
ipqe 40 4 0 1 1 0 1 1 0 8 0
inpcb 328 427 0 419 12 5 7 7 0 8 6
ip6q 80 2 0 0 1 0 1 1 0 8 0
ip6af 40 2 0 0 1 0 1 1 0 8 0
nd6 152 62 0 45 1 0 1 1 0 8 0
kcovpl 48 40 0 33 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 1004 0 637 32 3 29 32 0 8 3
art_table 40 1005 0 637 6 0 6 6 0 8 0
art_node 32 245 0 157 1 0 1 1 0 8 0
semapl 72 15 0 0 1 0 1 1 0 8 0
shmpl 120 15 0 0 1 0 1 1 0 8 0
dirhash 1024 23 0 2 3 0 3 3 0 8 0
dino2pl 256 1869 0 341 96 0 96 96 0 8 0
ffsino 296 1869 0 341 118 0 118 118 0 8 0
nchpl 144 2291 0 544 66 0 66 66 0 8 0
vnodes 216 2238 0 0 125 0 125 125 0 8 0
namei 1024 10173 0 10172 3 2 1 3 0 8 0
percpumem 16 63 0 14 1 0 1 1 0 8 0
kstatmem 264 49 0 28 2 0 2 2 0 8 0
scxspl 216 7995 0 7995 11 3 8 8 1 8 8
plimitpl 152 124 0 102 2 0 2 2 0 8 0
sigapl 424 829 0 780 7 0 7 7 0 8 0
knotepl 120 480 0 0 15 0 15 15 0 8 0
kqueuepl 224 74 0 63 1 0 1 1 0 8 0
pipepl 344 239 0 212 4 0 4 4 0 8 0
fdescpl 528 813 0 780 4 0 4 4 0 8 0
filepl 160 3960 0 3765 16 4 12 15 0 8 2
lockfpl 104 66 0 64 1 0 1 1 0 8 0
lockfspl 48 25 0 23 1 0 1 1 0 8 0
sessionpl 144 67 0 52 1 0 1 1 0 8 0
pgrppl 48 109 0 87 1 0 1 1 0 8 0
ucredpl 104 686 0 670 1 0 1 1 0 8 0
zombiepl 144 781 0 780 1 0 1 1 0 8 0
processpl 1240 829 0 780 5 0 5 5 0 8 0
procpl 664 1143 0 1092 7 1 6 7 0 8 0
sosppl 176 6 0 6 1 1 0 1 0 8 0
sockpl 752 787 0 760 19 9 10 16 0 8 7
mcl64k 65536 5 0 0 1 0 1 1 0 8 0
mcl16k 16384 2 0 0 1 0 1 1 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 130 0 0 17 0 17 17 0 8 0
mcl2k 2048 41 0 0 6 0 6 6 0 8 0
mextrefs 64 40 0 0 1 0 1 1 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 266 0 0 17 0 17 17 0 8 0
bufpl 272 2607 0 105 167 0 167 167 0 8 0
anonpl 32 7608 0 0 62 0 62 62 0 247 0
amapchunkpl 152 17818 0 17444 37 5 32 37 0 158 12
amappl16 200 2232 0 2203 17 6 11 15 0 8 8
amappl15 192 7 0 7 1 1 0 1 0 8 0
amappl14 184 557 0 554 1 0 1 1 0 8 0
amappl13 176 146 0 135 1 0 1 1 0 8 0
amappl12 168 1111 0 1082 2 0 2 2 0 8 0
amappl11 160 7 0 7 2 2 0 1 0 8 0
amappl10 152 62 0 52 1 0 1 1 0 8 0
amappl9 144 286 0 286 1 1 0 1 0 8 0
amappl8 136 217 0 215 1 0 1 1 0 8 0
amappl7 128 167 0 154 1 0 1 1 0 8 0
amappl6 120 286 0 282 1 0 1 1 0 8 0
amappl5 112 99 0 91 1 0 1 1 0 8 0
amappl4 104 304 0 288 1 0 1 1 0 8 0
amappl3 96 2990 0 2916 4 1 3 3 0 8 0
amappl2 88 1011 0 938 3 0 3 3 0 8 0
amappl1 80 13543 0 12974 16 0 16 16 0 8 1
amappl 88 5161 0 5029 5 0 5 5 0 92 0
uvmvnodes 80 104 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 128 253 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 17 0 0 1 0 1 1 0 8 0
uaddrrnd 24 813 0 780 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 813 0 780 1 0 1 1 0 8 0
vmmpekpl 168 8782 0 8729 3 0 3 3 0 8 0
vmmpepl 168 62053 0 60269 102 2 100 101 0 357 10
vmsppl 488 812 0 780 7 1 6 6 0 8 0
rwobjpl 80 20435 0 19474 27 1 26 26 0 8 2
pdppl 4096 1633 0 1560 125 42 83 99 0 8 10
pvpl 32 15518 0 0 126 1 125 125 0 265 0
pmappl 256 812 0 780 4 1 3 3 0 8 0
extentpl 40 46 0 28 1 0 1 1 0 8 0
phpool 112 486 0 55 13 0 13 13 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
ufsdirhash_lookup(fffff08067ed1e28,ffff80002a214c02,f6,fffff08067ed1f0c,ffff80002a322750,0) at ufsdirhash_lookup+0x53d sys/ufs/ufs/ufs_dirhash.c:391
ufs_lookup() at ufs_lookup+0xf76 sys/ufs/ufs/ufs_lookup.c:214
VOP_LOOKUP(fffff0807a0701d8,ffff80002a322bc8,ffff80002a322bf8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80002a322b98) at vfs_lookup+0x9e3 sys/kern/vfs_lookup.c:585
namei(ffff80002a322b98) at namei+0x7c1 sys/kern/vfs_lookup.c:250
vn_open(ffff80002a322b98,2,0) at vn_open+0x178 sys/kern/vfs_vnops.c:146
doopenat(ffff8000333967e8,ffffff9c,200000000440,1,0,0,e895f68dc90512d8) at doopenat+0x35b sys/kern/vfs_syscalls.c:1163
sys_open(ffff8000333967e8,ffff80002a322e50,ffff80002a322da0) at sys_open+0x59 sys/kern/vfs_syscalls.c:1065
syscall(ffff80002a322e50) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a322e50) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:791
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x12108482d90, count: -10
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
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
end of kernel
end trace frame: 0x7b3fa481fe90, count: 12
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
end of kernel
end trace frame: 0x7b3fa481fe90, count: -3