uvm_fault(0xffffffff839b9bc0, 0xffff8000291f20b0, 0, 1) -> d
kernel: page fault trap, code=0
Stopped at ffs2_balloc+0xa0a: movq 0(%rcx,%rax,8),%r14
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*134302 3257 0 0x2 0x1 0 syz-executor
ffs2_balloc(fffffd807e850300,89fcd,78,fffffd8007bfd618,1,ffff80002a7fda98) at ffs2_balloc+0xa0a sys/ufs/ffs/ffs_balloc.c:614
ffs_write(ffff80002a7fdb20) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345
VOP_WRITE(fffffd806c701370,ffff80002a7fdbd0,3,fffffd8007bfd618) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245
ktrwriteraw(ffff80002a7b82a8,fffffd806c701370,fffffd8007bfd618,ffff80002a7fdca0,ffff80002a7fdc80) at ktrwriteraw+0x19b sys/kern/kern_ktrace.c:691
ktrsyscall(ffff80002a7b82a8,6e,30,ffff80002a7fde20) at ktrsyscall+0x332 ktrwrite sys/kern/kern_ktrace.c:-1 [inline]
ktrsyscall(ffff80002a7b82a8,6e,30,ffff80002a7fde20) at ktrsyscall+0x332 sys/kern/kern_ktrace.c:183
syscall(ffff80002a7fde20) at syscall+0x2bc mi_syscall sys/sys/syscall_mi.h:154 [inline]
syscall(ffff80002a7fde20) at syscall+0x2bc sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x71f481bf0b50, count: 8
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>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
*cpu0: uvm_fault(0xffffffff839b9bc0, 0xffff8000291f20b0, 0, 1) -> d
ddb> trace
ffs2_balloc(fffffd807e850300,89fcd,78,fffffd8007bfd618,1,ffff80002a7fda98) at ffs2_balloc+0xa0a sys/ufs/ffs/ffs_balloc.c:614
ffs_write(ffff80002a7fdb20) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345
VOP_WRITE(fffffd806c701370,ffff80002a7fdbd0,3,fffffd8007bfd618) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245
ktrwriteraw(ffff80002a7b82a8,fffffd806c701370,fffffd8007bfd618,ffff80002a7fdca0,ffff80002a7fdc80) at ktrwriteraw+0x19b sys/kern/kern_ktrace.c:691
ktrsyscall(ffff80002a7b82a8,6e,30,ffff80002a7fde20) at ktrsyscall+0x332 ktrwrite sys/kern/kern_ktrace.c:-1 [inline]
ktrsyscall(ffff80002a7b82a8,6e,30,ffff80002a7fde20) at ktrsyscall+0x332 sys/kern/kern_ktrace.c:183
syscall(ffff80002a7fde20) at syscall+0x2bc mi_syscall sys/sys/syscall_mi.h:154 [inline]
syscall(ffff80002a7fde20) at syscall+0x2bc sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x71f481bf0b50, count: -7
ddb> show registers
rdi 0
rsi 0
rbp 0xffff80002a7fda40
rbx 0xfffffd807e850300
rdx 0
rcx 0xffff8000291f2000
rax 0x16
r8 0xffffffffffffffff
r9 0xffff80002a7fda98
r10 0xec3a14992f078d59
r11 0xc4b97f56886fd48a
r12 0x1
r13 0xffff800000b3f800
r14 0xffff80002a7fd8e0
r15 0xfffffd805f2fe5a0
rip 0xffffffff817c2eda ffs2_balloc+0xa0a
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80002a7fd8d0
ss 0x10
ffs2_balloc+0xa0a: movq 0(%rcx,%rax,8),%r14
ddb> show proc
PROC (syz-executor) tid=134302 pid=3257 tcnt=1 stat=onproc
flags process=2<EXEC> proc=1<INKTR>
runpri=82, usrpri=82, slppri=24, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002a7b9a00,0xffff80002a7b9778
process=0xffff80002a7dc910 user=0xffff80002a7f8000, vmspace=0xfffffd807eb812e0
estcpu=32, cpticks=23, pctcpu=0.0, user=4, sys=19, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
49938 77896 1404 0 2 0 syz-executor
49938 482440 1404 0 2 0x4000000 syz-executor
80544 502923 88774 0 3 0x80 nanoslp syz-executor
80544 172233 88774 0 3 0x4000080 bell syz-executor
81237 441059 75470 60929 3 0x90 nanoslp syz-executor
81237 437471 75470 60929 3 0x4000090 piperd syz-executor
81237 519571 75470 60929 3 0x4000090 fsleep syz-executor
81237 258820 75470 60929 3 0x4000090 fsleep syz-executor
79852 88504 53008 0 3 0x80 nanoslp syz-executor
79852 350665 53008 0 3 0x4000080 sbwait syz-executor
79852 335034 53008 0 3 0x4000080 fsleep syz-executor
53008 451549 3257 0 3 0x82 nanoslp syz-executor
22105 159138 0 0 3 0x14280 nfsidl nfsio
26779 380298 0 0 3 0x14280 nfsidl nfsio
96168 462574 0 0 3 0x14280 nfsidl nfsio
17523 486495 0 0 3 0x14280 nfsidl nfsio
46734 375956 0 0 3 0x14280 nfsidl nfsio
53684 221064 0 0 3 0x14280 nfsidl nfsio
31186 12170 0 0 3 0x14280 nfsidl nfsio
77291 356136 0 0 3 0x14280 nfsidl nfsio
14946 165400 0 0 3 0x14280 nfsidl nfsio
7959 404082 0 0 3 0x14280 nfsidl nfsio
50265 353861 0 0 3 0x14280 nfsidl nfsio
66408 154444 0 0 3 0x14280 nfsidl nfsio
20392 30721 0 0 3 0x14280 nfsidl nfsio
49808 277542 0 0 3 0x14280 nfsidl nfsio
12034 396981 0 0 3 0x14280 nfsidl nfsio
57134 207125 0 0 3 0x14280 nfsidl nfsio
71516 69698 0 0 3 0x14280 nfsidl nfsio
52475 172880 0 0 3 0x14280 nfsidl nfsio
85264 203673 0 0 3 0x14280 nfsidl nfsio
44566 609 0 0 3 0x14280 nfsidl nfsio
20459 187039 1 0 3 0x100083 ttyin getty
1404 99599 3257 0 3 0x82 nanoslp syz-executor
38689 406962 3257 0 3 0x82 piperd syz-executor
83203 191434 3257 0 3 0x82 nanoslp syz-executor
88774 367338 3257 0 3 0x82 nanoslp syz-executor
75470 392641 3257 0 3 0x82 nanoslp syz-executor
48492 138701 3257 0 3 0x82 nanoslp syz-executor
8607 209122 3257 0 3 0x82 piperd syz-executor
* 3257 134302 75890 0 7 0x3 syz-executor
75890 287592 76651 0 3 0x10008a sigsusp ksh
76651 203746 64538 0 3 0x98 kqread sshd-session
64538 225697 29033 0 3 0x92 kqread sshd-session
29033 482858 1 0 3 0x88 kqread sshd
16900 245648 23268 73 3 0x1100090 kqread syslogd
23268 393439 1 0 3 0x100082 sbwait syslogd
11162 359360 1 0 3 0x100080 kqread resolvd
84282 362318 12523 77 3 0x100092 kqread dhcpleased
41676 323474 12523 77 3 0x100092 kqread dhcpleased
12523 83055 1 0 3 0x80 kqread dhcpleased
85544 380596 0 0 3 0x14200 bored smr
58379 203672 0 0 2 0x14200 zerothread
70479 56726 0 0 3 0x14200 aiodoned aiodoned
98706 20403 0 0 3 0x14200 syncer update
50601 55383 0 0 3 0x14200 cleaner cleaner
36908 323765 0 0 3 0x14200 reaper reaper
43395 273143 0 0 3 0x14200 pgdaemon pagedaemon
66549 16114 0 0 3 0x14200 bored viomb
84191 277740 0 0 3 0x40014200 acpi0 acpi0
30868 235768 0 0 3 0x14200 bored softnet0
84909 70456 0 0 3 0x14200 bored systqmp
5560 295107 0 0 3 0x14200 bored systq
15566 115961 0 0 3 0x40014200 tmoslp softclock
75910 202144 0 0 3 0x40014200 idle0
1 338566 0 0 3 0x80082 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10235 11121K 11514K 166960K 12898 0
pcb 18 16K 17K 166960K 326 0
rtable 211 9K 9K 166960K 590 0
pf 29 12K 16K 166960K 113 0
ifaddr 37 6K 8K 166960K 96 0
ifgroup 46 2K 2K 166960K 136 0
sysctl 3 1K 9K 166960K 11 0
counters 32 17K 18K 166960K 73 0
ioctlops 0 0K 4K 166960K 314 0
iov 1 1K 28K 166960K 112 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1365 86K 87K 166960K 2228 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 15 0
VM map 2 1K 1K 166960K 2 0
sem 19 5K 6K 166960K 46 0
dirhash 12 2K 2K 166960K 21 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 16 57K 97K 166960K 1079 0
sigio 1 0K 0K 166960K 19 0
proc 64 67K 108K 166960K 683 0
subproc 72 4K 4K 166960K 100 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 2 0K 0K 166960K 124 0
in_multi 83 6K 7K 166960K 183 0
ether_multi 1 0K 0K 166960K 18 0
mrt 1 0K 0K 166960K 12 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 409 1818K 1818K 166960K 409 0
exec 0 0K 1K 166960K 468 0
fusefs mount 1 32K 32K 166960K 1 0
pfkey data 0 0K 0K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 226 151K 176K 166960K 11008 0
UVM aobj 61 9K 11K 166960K 65 0
pinsyscall 37 74K 96K 166960K 2238 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 54 0
NDP 12 0K 2K 166960K 63 0
temp 62 8667K 8923K 166960K 38568 0
kqueue 15 20K 28K 166960K 190 0
SYN cache 2 16K 16K 166960K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 182 0 179 3 0 3 3 0 8 2
rtentry 136 175 0 92 4 0 4 4 0 8 0
unpcb 144 1120 0 1102 7 0 7 7 0 8 6
syncache 336 6 0 6 1 0 1 1 0 8 1
tcpqe 32 3 0 3 1 0 1 1 0 8 1
tcpcb 736 339 0 266 7 0 7 7 0 8 0
arp 96 27 0 10 1 0 1 1 0 8 0
ipq 40 6 0 0 1 0 1 1 0 8 0
ipqe 40 7 0 1 1 0 1 1 0 8 0
inpcb 328 1162 0 1083 10 0 10 10 0 8 3
ip6q 72 6 0 3 1 0 1 1 0 8 0
ip6af 40 12 0 7 1 0 1 1 0 8 0
nd6 112 38 0 18 1 0 1 1 0 8 0
pkpcb 40 5 0 5 1 0 1 1 0 8 1
kcovpl 48 11 0 3 1 0 1 1 0 8 0
ppxss 1072 29 0 29 1 0 1 1 0 8 1
pppxif 1384 4 0 4 1 0 1 1 0 8 1
pfrktable 1344 2 0 2 1 0 1 1 0 8 1
pftag 88 2 0 0 1 0 1 1 0 8 0
pfstitem 24 2 0 0 1 0 1 1 0 8 0
pfstkey 128 2 0 0 1 0 1 1 0 8 0
pfstate 384 1 0 0 1 0 1 1 0 8 0
pfrule 1344 6 0 6 1 0 1 1 0 8 1
rttmr 136 2 0 2 1 0 1 1 0 8 1
art_heap8 4096 3 0 0 3 0 3 3 0 8 0
art_heap4 256 799 0 438 31 0 31 31 0 8 6
art_table 40 802 0 438 5 0 5 5 0 8 0
art_node 32 172 0 98 1 0 1 1 0 8 0
sysvmsgpl 40 12 0 9 1 0 1 1 0 8 0
semupl 112 1 0 1 1 0 1 1 0 8 1
semapl 112 37 0 20 1 0 1 1 0 8 0
shmpl 112 58 0 3 2 0 2 2 0 8 0
dirhash 1024 23 0 6 3 0 3 3 0 8 0
dino2pl 256 3347 0 1845 95 0 95 95 0 8 0
ffsino 256 3347 0 1845 95 0 95 95 0 8 0
nchpl 144 4846 0 3143 64 0 64 64 0 8 0
rtmask 32 6 0 6 1 0 1 1 0 8 1
vnodes 216 3910 0 0 218 0 218 218 0 8 0
namei 1024 16938 0 16938 2 0 2 2 0 8 2
vcpupl 3904 4 0 1 1 0 1 1 0 8 0
vmpool 800 4 0 1 1 0 1 1 0 8 0
kstatmem 264 80 0 60 2 0 2 2 0 8 0
scsiplug 72 3 0 3 1 0 1 1 0 8 1
scxspl 216 20014 0 20013 8 0 8 8 1 8 7
plimitpl 152 309 0 292 1 0 1 1 0 8 0
sigapl 424 1403 0 1342 8 0 8 8 0 8 0
knotepl 120 34948 0 34900 16 4 12 16 0 8 7
kqueuepl 184 360 0 350 3 0 3 3 0 8 2
pipepl 304 178 0 148 3 0 3 3 0 8 0
fdescpl 448 1348 0 1320 5 0 5 5 0 8 1
filepl 120 9166 0 8871 17 1 16 17 0 8 6
lockfpl 104 499 0 497 2 0 2 2 0 8 1
lockfspl 48 141 0 139 1 0 1 1 0 8 0
sessionpl 144 29 0 21 1 0 1 1 0 8 0
pgrppl 48 50 0 34 1 0 1 1 0 8 0
ucredpl 104 1418 0 1404 1 0 1 1 0 8 0
zombiepl 144 1344 0 1342 1 0 1 1 0 8 0
processpl 1152 1403 0 1342 5 0 5 5 0 8 0
procpl 664 2801 0 2733 8 0 8 8 0 8 1
sosppl 176 4 0 4 1 0 1 1 0 8 1
sockpl 552 2493 0 2393 22 11 11 22 0 8 3
mcl64k 65536 221 0 219 1 0 1 1 0 8 0
mcl16k 16384 1 0 1 1 0 1 1 0 8 1
mcl9k 9216 2 0 2 1 0 1 1 0 8 1
mcl8k 8192 10 0 10 1 0 1 1 0 8 1
mcl4k 4096 3660 0 3598 14 0 14 14 0 8 6
mcl2k 2048 1866 0 1857 9 0 9 9 0 8 7
mtagpl 96 54 0 24 1 0 1 1 0 8 0
mbufpl 256 15553 0 15349 19 0 19 19 0 8 2
bufpl 280 10687 0 4466 445 0 445 445 0 8 0
anonpl 24 204584 0 199418 64 0 64 64 0 187 19
amapchunkpl 152 38765 0 38297 39 0 39 39 0 158 17
amappl16 200 3698 0 3554 35 21 14 25 0 8 2
amappl15 192 5 0 5 1 0 1 1 0 8 1
amappl14 184 6 0 6 1 0 1 1 0 8 1
amappl13 176 437 0 436 1 0 1 1 0 8 0
amappl12 168 1711 0 1674 2 0 2 2 0 8 0
amappl11 160 50 0 49 1 0 1 1 0 8 0
amappl10 152 62 0 52 1 0 1 1 0 8 0
amappl9 144 258 0 258 1 0 1 1 0 8 1
amappl8 136 18 0 17 1 0 1 1 0 8 0
amappl7 128 85 0 84 1 0 1 1 0 8 0
amappl6 120 298 0 286 1 0 1 1 0 8 0
amappl5 112 72 0 64 1 0 1 1 0 8 0
amappl4 104 467 0 444 1 0 1 1 0 8 0
amappl3 96 7206 0 7106 3 0 3 3 0 8 0
amappl2 88 581 0 524 2 0 2 2 0 8 0
amappl1 80 13743 0 13207 13 0 13 13 0 8 0
amappl 88 10067 0 9910 5 0 5 5 0 92 0
uvmvnodes 80 120 0 0 3 0 3 3 0 8 0
dma4096 4096 3 0 3 1 0 1 1 0 8 1
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma256 256 6 0 6 1 0 1 1 0 8 1
dma128 128 253 0 253 1 0 1 1 0 8 1
dma64 64 6 0 6 1 0 1 1 0 8 1
dma32 32 7 0 7 1 0 1 1 0 8 1
dma16 16 20 0 19 1 0 1 1 0 8 0
aobjpl 72 64 0 4 2 0 2 2 0 8 0
uaddrrnd 24 1348 0 1320 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1348 0 1320 1 0 1 1 0 8 0
vmmpekpl 168 11884 0 11848 2 0 2 2 0 8 0
vmmpepl 168 90199 0 88344 101 0 101 101 0 357 11
vmsppl 368 1347 0 1320 4 0 4 4 0 8 1
rwobjpl 40 24903 0 23767 15 0 15 15 0 8 1
pdppl 4096 2711 0 2645 109 37 72 83 0 8 6
pvpl 32 577997 0 566992 137 0 137 137 0 265 45
pmappl 216 1351 0 1321 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 403 0 37 11 0 11 11 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
ffs2_balloc(fffffd807e850300,89fcd,78,fffffd8007bfd618,1,ffff80002a7fda98) at ffs2_balloc+0xa0a sys/ufs/ffs/ffs_balloc.c:614
ffs_write(ffff80002a7fdb20) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345
VOP_WRITE(fffffd806c701370,ffff80002a7fdbd0,3,fffffd8007bfd618) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245
ktrwriteraw(ffff80002a7b82a8,fffffd806c701370,fffffd8007bfd618,ffff80002a7fdca0,ffff80002a7fdc80) at ktrwriteraw+0x19b sys/kern/kern_ktrace.c:691
ktrsyscall(ffff80002a7b82a8,6e,30,ffff80002a7fde20) at ktrsyscall+0x332 ktrwrite sys/kern/kern_ktrace.c:-1 [inline]
ktrsyscall(ffff80002a7b82a8,6e,30,ffff80002a7fde20) at ktrsyscall+0x332 sys/kern/kern_ktrace.c:183
syscall(ffff80002a7fde20) at syscall+0x2bc mi_syscall sys/sys/syscall_mi.h:154 [inline]
syscall(ffff80002a7fde20) at syscall+0x2bc sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x71f481bf0b50, count: -7
ddb> machine ddbcpu 1
No such command
ddb> trace
ffs2_balloc(fffffd807e850300,89fcd,78,fffffd8007bfd618,1,ffff80002a7fda98) at ffs2_balloc+0xa0a sys/ufs/ffs/ffs_balloc.c:614
ffs_write(ffff80002a7fdb20) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345
VOP_WRITE(fffffd806c701370,ffff80002a7fdbd0,3,fffffd8007bfd618) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245
ktrwriteraw(ffff80002a7b82a8,fffffd806c701370,fffffd8007bfd618,ffff80002a7fdca0,ffff80002a7fdc80) at ktrwriteraw+0x19b sys/kern/kern_ktrace.c:691
ktrsyscall(ffff80002a7b82a8,6e,30,ffff80002a7fde20) at ktrsyscall+0x332 ktrwrite sys/kern/kern_ktrace.c:-1 [inline]
ktrsyscall(ffff80002a7b82a8,6e,30,ffff80002a7fde20) at ktrsyscall+0x332 sys/kern/kern_ktrace.c:183
syscall(ffff80002a7fde20) at syscall+0x2bc mi_syscall sys/sys/syscall_mi.h:154 [inline]
syscall(ffff80002a7fde20) at syscall+0x2bc sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x71f481bf0b50, count: -7