uvm_fault(0xfffffd8064c4b8f0, 0x38, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at VOP_BWRITE+0x34: movq 0x38(%rax),%r14
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 34325 8900 0 0x2 0 0 syz-executor.5
458471 69782 0 0x2 0 1 syz-executor.6
VOP_BWRITE(fffffd8065413040) at VOP_BWRITE+0x34 sys/kern/vfs_vops.c:637
ufs_mkdir(ffff800031f0be80) at ufs_mkdir+0x52c sys/ufs/ufs/ufs_vnops.c:1175
VOP_MKDIR(fffffd8074a166d8,ffff800031f0bfe0,ffff800031f0c010,ffff800031f0bf10) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388
domkdirat(ffff80002a21ad38,ffffff9c,7a2a4477f200,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3069
syscall(ffff800031f0c190) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline]
syscall(ffff800031f0c190) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7a2a4477f270, 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{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: uvm_fault(0xfffffd8064c4b8f0, 0x38, 0, 1) -> e
ddb{0}> trace
VOP_BWRITE(fffffd8065413040) at VOP_BWRITE+0x34 sys/kern/vfs_vops.c:637
ufs_mkdir(ffff800031f0be80) at ufs_mkdir+0x52c sys/ufs/ufs/ufs_vnops.c:1175
VOP_MKDIR(fffffd8074a166d8,ffff800031f0bfe0,ffff800031f0c010,ffff800031f0bf10) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388
domkdirat(ffff80002a21ad38,ffffff9c,7a2a4477f200,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3069
syscall(ffff800031f0c190) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline]
syscall(ffff800031f0c190) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7a2a4477f270, count: -6
ddb{0}> show registers
rdi 0xfffffd8065413040
rsi 0
rbp 0xffff800031f0bce0
rbx 0x2
rdx 0
rcx 0xffff80002a21ad38
rax 0
r8 0x101010101010101
r9 0
r10 0xffff80002a267d90
r11 0xb8b5135d52244374
r12 0xfffffd806b2c4bb8
r13 0xcabc __ALIGN_SIZE+0xbabc
r14 0xfffffd8065413040
r15 0xfffffd806b2c4338
rip 0xffffffff8233c9c4 VOP_BWRITE+0x34
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff800031f0bcb0
ss 0x10
VOP_BWRITE+0x34: movq 0x38(%rax),%r14
ddb{0}> show proc
PROC (syz-executor.5) tid=34325 pid=8900 tcnt=1 stat=onproc
flags process=2<EXEC> proc=0
runpri=17, usrpri=83, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0
forw=0xffffffffffffffff, list=0xffff80002a2192a8,0xffff80002a20a570
process=0xffff8000ffff1f28 user=0xffff800031f07000, vmspace=0xfffffd8064c4b8f0
estcpu=36, cpticks=0, pctcpu=0.1, user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
80114 56174 69782 0 2 0 syz-executor.6
80114 296209 69782 0 2 0x4000000 syz-executor.6
14879 110540 44568 0 2 0 syz-executor.1
14879 243079 44568 0 3 0x4000080 netcon syz-executor.1
93944 168215 53973 0 2 0 syz-executor.4
93944 460019 53973 0 3 0x4000080 fsleep syz-executor.4
42670 258358 80823 0 2 0 syz-executor.3
42670 180702 80823 0 2 0x4000000 syz-executor.3
8703 321191 2883 0 2 0 syz-executor.0
8703 299557 2883 0 3 0x4000080 fsleep syz-executor.0
8703 260777 2883 0 3 0x4000080 fsleep syz-executor.0
33688 167521 0 0 3 0x14280 nfsidl nfsio
65645 486365 0 0 3 0x14280 nfsidl nfsio
49409 472373 0 0 3 0x14280 nfsidl nfsio
63059 458659 0 0 3 0x14280 nfsidl nfsio
45686 511796 0 0 3 0x14280 nfsidl nfsio
91150 419243 0 0 3 0x14280 nfsidl nfsio
96327 157019 0 0 3 0x14280 nfsidl nfsio
86891 172716 0 0 3 0x14280 nfsidl nfsio
9005 420106 0 0 3 0x14280 nfsidl nfsio
15924 110493 0 0 3 0x14280 nfsidl nfsio
14590 329702 0 0 3 0x14280 nfsidl nfsio
53192 312705 0 0 3 0x14280 nfsidl nfsio
12476 24528 0 0 3 0x14280 nfsidl nfsio
98623 102333 0 0 3 0x14280 nfsidl nfsio
26281 246025 0 0 3 0x14280 nfsidl nfsio
63889 110170 0 0 3 0x14280 nfsidl nfsio
93819 354434 0 0 3 0x14280 nfsidl nfsio
34711 93355 0 0 3 0x14280 nfsidl nfsio
3210 426624 0 0 3 0x14280 nfsidl nfsio
60125 71509 0 0 3 0x14280 nfsidl nfsio
2883 517999 19059 0 3 0x82 nanoslp syz-executor.0
53973 126597 19059 0 3 0x82 nanoslp syz-executor.4
13352 26769 1 0 3 0x80 fsleep syz-executor.4
13352 459274 1 0 3 0x4000080 kqread syz-executor.4
* 8900 34325 19059 0 7 0x2 syz-executor.5
44568 122488 19059 0 3 0x82 nanoslp syz-executor.1
66871 2978 19059 0 2 0x2 syz-executor.2
80823 432891 19059 0 3 0x82 nanoslp syz-executor.3
61698 61225 1 0 3 0x100083 ttyin getty
93234 105515 0 0 3 0x14200 bored sosplice
87595 480225 19059 0 2 0x2 syz-executor.7
69782 458471 19059 0 7 0x2 syz-executor.6
19059 169728 31930 0 3 0x2000082 thrsleep syz-fuzzer
19059 96525 31930 0 3 0x6000082 nanoslp syz-fuzzer
19059 119685 31930 0 3 0x6000082 thrsleep syz-fuzzer
19059 140146 31930 0 3 0x6000082 wait syz-fuzzer
19059 224129 31930 0 3 0x6000082 thrsleep syz-fuzzer
19059 110226 31930 0 3 0x6000082 thrsleep syz-fuzzer
19059 35343 31930 0 3 0x6000082 kqread syz-fuzzer
19059 298943 31930 0 3 0x6000082 wait syz-fuzzer
19059 236403 31930 0 3 0x6000082 wait syz-fuzzer
19059 61540 31930 0 3 0x6000082 wait syz-fuzzer
19059 358761 31930 0 3 0x6000082 thrsleep syz-fuzzer
19059 17264 31930 0 3 0x6000082 wait syz-fuzzer
19059 501652 31930 0 3 0x6000082 wait syz-fuzzer
19059 216657 31930 0 3 0x6000082 wait syz-fuzzer
19059 49175 31930 0 3 0x6000082 wait syz-fuzzer
19059 515449 31930 0 3 0x6000082 thrsleep syz-fuzzer
31930 491273 59386 0 3 0x10008a sigsusp ksh
59386 333699 23986 0 3 0x9a kqread sshd
23986 403619 1 0 3 0x88 kqread sshd
10119 260980 46731 74 3 0x1100092 bpf pflogd
46731 318641 1 0 3 0x80 netio pflogd
68610 451908 76314 73 3 0x1100090 kqread syslogd
76314 256473 1 0 3 0x100082 netio syslogd
72650 505876 1 0 3 0x100080 kqread resolvd
53128 221798 16163 77 3 0x100092 kqread dhcpleased
4205 319557 16163 77 3 0x100092 kqread dhcpleased
16163 461118 1 0 3 0x80 kqread dhcpleased
77037 386013 0 0 3 0x14200 bored smr
82943 265739 0 0 2 0x14200 zerothread
29028 102228 0 0 3 0x14200 aiodoned aiodoned
60187 238729 0 0 3 0x14200 syncer update
61644 152850 0 0 3 0x14200 cleaner cleaner
41934 116463 0 0 3 0x14200 reaper reaper
65144 11516 0 0 3 0x14200 pgdaemon pagedaemon
90805 512828 0 0 3 0x14200 bored viomb
18220 428919 0 0 3 0x40014200 acpi0 acpi0
52937 167686 0 0 3 0x40014200 idle1
71077 204428 0 0 3 0x14200 bored softnet3
18468 413309 0 0 3 0x14200 bored softnet2
5142 508053 0 0 3 0x14200 bored softnet1
72410 427809 0 0 3 0x14200 bored softnet0
30320 254057 0 0 3 0x14200 bored systqmp
5431 324562 0 0 3 0x14200 bored systq
47723 361839 0 0 3 0x14200 tmoslp softclockmp
67142 320722 0 0 3 0x40014200 tmoslp softclock
57661 14198 0 0 3 0x40014200 idle0
1 521040 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 8900 (syz-executor.5) thread 0xffff80002a21ad38 (34325)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82dc1350)
#0 witness_lock+0x447
#1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
#2 mi_switch+0x46f sys/kern/sched_bsd.c:470
#3 sleep_finish+0x19b sys/kern/kern_synch.c:414
#4 biowait+0x91 sys/kern/vfs_bio.c:1254
#5 bwrite+0x21c sys/kern/vfs_bio.c:766
#6 ffs_update+0x28b sys/ufs/ffs/ffs_inode.c:111
#7 ufs_mkdir+0x517 sys/ufs/ufs/ufs_vnops.c:1175
#8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388
#9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3069
#10 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline]
#10 syscall+0x533 sys/arch/amd64/amd64/trap.c:577
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806b2c43d0)
#0 witness_lock+0x447
#1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309
#2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4 ufs_ihashins+0x46 sys/ufs/ufs/ufs_ihash.c:140
#5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1230
#6 ffs_inode_alloc+0x1c5 sys/ufs/ffs/ffs_alloc.c:393
#7 ufs_mkdir+0xfb sys/ufs/ufs/ufs_vnops.c:1127
#8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388
#9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3069
#10 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline]
#10 syscall+0x533 sys/arch/amd64/amd64/trap.c:577
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806b2c4c50)
#0 witness_lock+0x447
#1 rw_enter+0x3c8 sys/kern/kern_rwlock.c:309
#2 rrw_enter+0x8c sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5 vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418
#6 namei+0x55a sys/kern/vfs_lookup.c:250
#7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3054
#8 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline]
#8 syscall+0x533 sys/arch/amd64/amd64/trap.c:577
#9 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10196 6550K 6997K 166960K 16080 0
pcb 15 16K 18K 166960K 217 0
rtable 228 7K 7K 166960K 688 0
pf 34 9K 10K 166960K 96 0
ifaddr 45 15K 15K 166960K 103 0
ifgroup 59 2K 2K 166960K 144 0
sysctl 2 0K 0K 166960K 2 0
counters 66 36K 36K 166960K 116 0
ioctlops 0 0K 4K 166960K 1586 0
iov 0 0K 16K 166960K 131 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1417 89K 89K 166960K 2756 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 31 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 166 0
dirhash 12 2K 2K 166960K 15 0
ACPI 1697 195K 286K 166960K 12548 0
file desc 16 57K 89K 166960K 2607 0
sigio 0 0K 0K 166960K 137 0
proc 69 91K 115K 166960K 800 0
subproc 117 7K 7K 166960K 208 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 165 0
in_multi 88 6K 7K 166960K 216 0
ether_multi 1 0K 0K 166960K 1 0
mrt 1 0K 0K 166960K 3 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 67 307K 307K 166960K 67 0
exec 0 0K 1K 166960K 756 0
pfkey data 0 0K 0K 166960K 35 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 382 224K 241K 166960K 28019 0
UVM aobj 131 4K 4K 166960K 131 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 1K 166960K 198 0
NDP 13 0K 1K 166960K 70 0
temp 78 6772K 6851K 166960K 23355 0
kqueue 13 20K 24K 166960K 221 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 24 0 0 1 0 1 1 0 8 0
rtpcb 120 226 0 223 4 3 1 4 0 8 0
rtentry 112 224 0 120 4 0 4 4 0 8 0
unpcb 144 2523 0 2506 21 20 1 6 0 8 0
syncache 336 12 0 12 5 5 0 1 0 8 0
tcpqe 32 102 0 102 3 3 0 1 0 8 0
tcpcb 808 511 0 503 14 12 2 8 0 8 0
arp 120 42 0 24 1 0 1 1 0 8 0
inpcb 392 1938 0 1927 46 37 9 15 0 8 7
nd6 136 49 0 28 1 0 1 1 0 8 0
pkpcb 40 10 0 10 3 2 1 1 0 8 1
kcovpl 48 16 0 7 1 0 1 1 0 8 0
ppxss 1168 9 0 9 2 2 0 1 0 8 0
pffrag 232 37 0 37 1 1 0 1 0 482 0
pffrnode 88 37 0 37 1 1 0 1 0 8 0
pffrent 40 80 0 80 1 1 0 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
pfstitem 24 108 0 99 1 0 1 1 0 8 0
pfstkey 128 108 0 99 2 0 2 2 0 8 0
pfstate 376 108 0 99 6 3 3 6 0 8 0
pfrule 1344 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 256 842 0 421 32 5 27 30 0 8 0
art_table 32 843 0 421 4 0 4 4 0 8 0
art_node 16 223 0 134 1 0 1 1 0 8 0
semapl 112 164 0 154 1 0 1 1 0 8 0
shmpl 112 128 0 0 4 0 4 4 0 8 0
dirhash 1024 19 0 2 3 0 3 3 0 8 0
dino2pl 256 4630 0 3177 92 0 92 92 0 8 0
ffsino 272 4630 0 3177 98 0 98 98 0 8 0
nchpl 144 8256 0 6603 64 0 64 64 0 8 0
uvmvnodes 80 5880 0 0 120 0 120 120 0 8 0
vnodes 216 5880 0 0 327 0 327 327 0 8 0
vnodes: pool(0xffffffff82dd0b38:vnodes): page inconsistency: page 0x0; at page head addr 0xfffffd80715f0f90 (p 0xfffffd80715f0000)
namei 1024 26619 0 26618 2 1 1 2 0 8 0
percpumem 16 72 0 25 1 0 1 1 0 8 0
vcpupl 2048 46 0 1 6 0 6 6 0 8 0
vmpool 696 49 0 4 5 0 5 5 0 8 0
kstatmem 264 76 0 50 2 0 2 2 0 8 0
scxspl 216 24731 0 24731 13 10 3 8 1 8 3
plimitpl 152 254 0 235 1 0 1 1 0 8 0
sigapl 424 2935 0 2867 8 0 8 8 0 8 0
futexpl 64 20664 0 20660 1 0 1 1 0 8 0
knotepl 120 134 0 0 4 0 4 4 0 8 0
kqueuepl 216 725 0 715 16 13 3 6 0 8 2
pipepl 320 353 0 324 8 5 3 8 0 8 0
fdescpl 496 2895 0 2866 7 2 5 5 0 8 0
filepl 152 15911 0 15640 34 19 15 18 0 8 4
lockfpl 104 523 0 520 2 1 1 2 0 8 0
lockfspl 48 237 0 234 1 0 1 1 0 8 0
sessionpl 144 33 0 15 1 0 1 1 0 8 0
pgrppl 48 174 0 156 1 0 1 1 0 8 0
ucredpl 104 1741 0 1729 1 0 1 1 0 8 0
zombiepl 144 2867 0 2867 1 0 1 1 0 8 1
processpl 1136 2935 0 2867 6 0 6 6 0 8 0
procpl 680 7405 0 7315 10 1 9 9 0 8 0
srpgc 96 12 0 12 3 3 0 1 0 8 0
sosppl 168 29 0 29 6 6 0 1 0 8 0
sockpl 584 4700 0 4669 60 50 10 17 0 8 7
mcl64k 65536 11 0 0 2 0 2 2 0 8 0
mcl16k 16384 9 0 0 2 0 2 2 0 8 0
mcl12k 12288 24 0 0 2 0 2 2 0 8 0
mcl9k 9216 10 0 0 1 0 1 1 0 8 0
mcl8k 8192 12 0 0 2 0 2 2 0 8 0
mcl4k 4096 21 0 0 3 0 3 3 0 8 0
mcl2k2 2112 5 0 0 1 0 1 1 0 8 0
mcl2k 2048 258 0 0 33 0 33 33 0 8 0
mtagpl 96 200 0 0 4 0 4 4 0 8 0
mbufpl 256 572 0 0 29 0 29 29 0 8 0
bufpl 280 7865 0 1547 452 0 452 452 0 8 0
anonpl 24 414878 0 399445 102 5 97 97 0 186 0
amapchunkpl 152 90006 0 89087 53 13 40 48 0 158 0
amappl16 200 8937 0 8444 27 1 26 26 0 8 0
amappl15 192 47 0 45 2 1 1 1 0 8 0
amappl14 184 194 0 180 2 1 1 2 0 8 0
amappl13 176 57 0 57 2 2 0 1 0 8 0
amappl12 168 3719 0 3687 3 1 2 2 0 8 0
amappl11 160 79 0 64 1 0 1 1 0 8 0
amappl10 152 42 0 30 2 1 1 1 0 8 0
amappl9 144 210 0 209 2 1 1 1 0 8 0
amappl8 136 316 0 242 3 0 3 3 0 8 0
amappl7 128 205 0 176 3 1 2 3 0 8 0
amappl6 120 385 0 374 1 0 1 1 0 8 0
amappl5 112 189 0 177 1 0 1 1 0 8 0
amappl4 104 547 0 521 2 1 1 2 0 8 0
amappl3 96 17469 0 17373 3 0 3 3 0 8 0
amappl2 88 3446 0 3367 3 1 2 3 0 8 0
amappl1 80 19265 0 18700 23 10 13 23 0 8 0
amappl 88 27349 0 27093 7 0 7 7 0 92 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 72 130 0 0 3 0 3 3 0 8 0
uaddrrnd 24 2944 0 2870 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 2944 0 2870 1 0 1 1 0 8 0
vmmpekpl 168 26755 0 26684 4 0 4 4 0 8 0
vmmpepl 168 193860 0 191366 182 67 115 145 0 357 1
vmsppl 448 2943 0 2870 11 2 9 9 0 8 0
rwobjpl 56 58575 0 50915 110 2 108 108 0 8 0
pdppl 4096 5895 0 5785 299 183 116 117 0 8 6
pvpl 32 42173 0 0 341 0 341 341 0 265 0
pmappl 248 2943 0 2870 6 1 5 5 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 709 0 263 13 0 13 13 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
VOP_BWRITE(fffffd8065413040) at VOP_BWRITE+0x34 sys/kern/vfs_vops.c:637
ufs_mkdir(ffff800031f0be80) at ufs_mkdir+0x52c sys/ufs/ufs/ufs_vnops.c:1175
VOP_MKDIR(fffffd8074a166d8,ffff800031f0bfe0,ffff800031f0c010,ffff800031f0bf10) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388
domkdirat(ffff80002a21ad38,ffffff9c,7a2a4477f200,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3069
syscall(ffff800031f0c190) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline]
syscall(ffff800031f0c190) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7a2a4477f270, count: -6
ddb{0}> machine ddbcpu 1