uvm_fault: softclock (6)
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syzbot
May 19, 2026, 4:08:21 PM (19 hours ago) May 19
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 3fe334830a75 sync
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1401002e580000
kernel config: https://syzkaller.appspot.com/x/.config?x=1bc15e68cd2a49e5
dashboard link: https://syzkaller.appspot.com/bug?extid=da9c5223d70f4e23edb2
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/53ecb66cbc44/disk-3fe33483.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/ada21bd63dd9/bsd-3fe33483.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/babfb3c32573/kernel-3fe33483.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+da9c52...@syzkaller.appspotmail.com
uvm_fault(0xfffffd8072a58e68, 0x8, 0, 2) -> e
kernel: page fault trap, code=2
Stopped at softclock+0xe7: movq %rcx,0x8(%rax)
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*208479 22862 0 0 0x4000000 0 syz-executor
softclock(0) at softclock+0xe7 sys/kern/kern_timeout.c:784
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
buf_get(0,0,ffd000) at buf_get+0x5de sys/kern/vfs_bio.c:1170
geteblk(ffd000) at geteblk+0x3c sys/kern/vfs_bio.c:-1
writedisklabel(d02,ffffffff8111d460,ffff800000039000) at writedisklabel+0x4b sys/arch/amd64/amd64/disksubr.c:133
sdioctl(d01,84946467,ffff8000015bd000,3,ffff8000338ca2b8) at sdioctl+0x959 sys/scsi/sd.c:919
VOP_IOCTL(fffffd8068c926e0,84946467,ffff8000015bd000,3,fffffd8007ffd548,ffff8000338ca2b8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806a5fb350,84946467,ffff8000015bd000,ffff8000338ca2b8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff8000338ca2b8,ffff80003c909cd0,ffff80003c909c20) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80003c909cd0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c909cd0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x370a7f1aef0, count: 2
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(0xfffffd8072a58e68, 0x8, 0, 2) -> e
ddb> trace
softclock(0) at softclock+0xe7 sys/kern/kern_timeout.c:784
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
buf_get(0,0,ffd000) at buf_get+0x5de sys/kern/vfs_bio.c:1170
geteblk(ffd000) at geteblk+0x3c sys/kern/vfs_bio.c:-1
writedisklabel(d02,ffffffff8111d460,ffff800000039000) at writedisklabel+0x4b sys/arch/amd64/amd64/disksubr.c:133
sdioctl(d01,84946467,ffff8000015bd000,3,ffff8000338ca2b8) at sdioctl+0x959 sys/scsi/sd.c:919
VOP_IOCTL(fffffd8068c926e0,84946467,ffff8000015bd000,3,fffffd8007ffd548,ffff8000338ca2b8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806a5fb350,84946467,ffff8000015bd000,ffff8000338ca2b8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff8000338ca2b8,ffff80003c909cd0,ffff80003c909c20) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80003c909cd0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c909cd0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x370a7f1aef0, count: -13
ddb> show registers
rdi 0xffffffff
rsi 0xd
rbp 0xffff80003c909570
rbx 0x1
rdx 0xffff8000015e5dc0
rcx 0xffffffff839facb0 timeout_todo
rax 0
r8 0xffff80002ecb3ce8
r9 0x21
r10 0xbc566252879f80b6
r11 0x36db93be989fe534
r12 0xffffffff
r13 0xffffffff83a5f6f0 rdrand_tmo
r14 0
r15 0xffff80002a767d30
rip 0xffffffff81e72427 softclock+0xe7
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80003c909530
ss 0x10
softclock+0xe7: movq %rcx,0x8(%rax)
ddb> show proc
PROC (syz-executor) tid=208479 pid=22862 tcnt=3 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=32, usrpri=77, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff8000338ca7e8,0xffff80002d8b0a88
process=0xffff8000ffffa898 user=0xffff80003c904000, vmspace=0xfffffd8072a58e68
estcpu=27, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
2487 453915 0 0 2 0 syz-executor
2487 79381 0 0 3 0x4000080 kqread syz-executor
22862 340291 0 0 2 0 syz-executor
*22862 208479 0 0 7 0x4000000 syz-executor
22862 218284 0 0 3 0x4000080 fsleep syz-executor
53880 300701 57952 0 2 0 syz-executor
53880 265940 57952 0 3 0x4000080 netcon syz-executor
81350 182066 37656 0 2 0 syz-executor
81350 160949 37656 0 3 0x4000080 semwait syz-executor
22288 310857 0 0 2 0 syz-executor
22288 212155 0 0 3 0x4000080 tunread syz-executor
96136 517578 12544 0 2 0 syz-executor
96136 315499 12544 0 3 0x4000080 fsleep syz-executor
5966 265435 19257 0 2 0xc80 syz-executor
5966 151704 19257 0 2 0x4000c80 syz-executor
5966 462667 19257 0 3 0x4000080 fsleep syz-executor
19257 184326 0 0 2 0xc82 syz-executor
12544 113615 0 0 3 0x82 nanoslp syz-executor
30037 13723 1 0 3 0x100083 ttyin getty
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11039 12108K 12460K 166960K 12846 0
pcb 17 12K 12K 166960K 103 0
rtable 212 7K 7K 166960K 541 0
pf 36 14K 19K 166960K 127 0
ifaddr 39 6K 7K 166960K 68 0
ifgroup 55 2K 2K 166960K 84 0
sysctl 4 1K 9K 166960K 10 0
counters 34 17K 17K 166960K 43 0
ioctlops 1 2K 4K 166960K 243 0
iov 0 0K 8K 166960K 20 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1357 85K 85K 166960K 2127 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 7 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 26 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 18 65K 85K 166960K 651 0
sigio 0 0K 0K 166960K 4 0
proc 29 49K 83K 166960K 692 0
subproc 72 4K 4K 166960K 108 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 54 0
in_multi 85 6K 7K 166960K 171 0
ether_multi 1 0K 0K 166960K 8 0
mrt 0 0K 0K 166960K 20 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 73 334K 334K 166960K 73 0
exec 0 0K 1K 166960K 464 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 198 133K 163K 166960K 7028 0
UVM aobj 4 2K 2K 166960K 4 0
pinsyscall 34 68K 90K 166960K 1840 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 11 0
NDP 14 0K 2K 166960K 46 0
temp 48 9108K 9172K 166960K 18172 0
kqueue 14 22K 27K 166960K 106 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 64 0 62 1 0 1 1 0 8 0
rtentry 136 165 0 75 4 0 4 4 0 8 0
unpcb 144 441 0 427 6 0 6 6 0 8 5
syncache 336 4 0 4 1 1 0 1 0 8 0
tcpcb 736 178 0 173 4 0 4 4 0 8 3
arp 96 26 0 10 1 0 1 1 0 8 0
inpcb 328 525 0 515 7 0 7 7 0 8 5
nd6 112 38 0 16 1 0 1 1 0 8 0
pkpcb 40 1 0 1 1 1 0 1 0 8 0
kcovpl 48 12 0 4 1 0 1 1 0 8 0
ppxss 1072 3 0 3 1 1 0 1 0 8 0
pfstscr 40 3 0 0 1 0 1 1 0 8 0
pffrag 232 3 0 0 1 0 1 1 0 482 0
pffrnode 88 3 0 0 1 0 1 1 0 8 0
pffrent 40 3 0 0 1 0 1 1 0 8 0
pfrktable 1344 1 0 1 1 1 0 1 0 8 0
pfsrclim 320 1 0 1 1 1 0 1 0 8 0
pfstlim 224 1 0 1 1 0 1 1 0 8 1
pfanchor 1288 2 0 0 1 0 1 1 0 8 0
pfstitem 24 5 0 0 1 0 1 1 0 8 0
pfstkey 128 6 0 1 1 0 1 1 0 8 0
pfstate 384 4 0 1 1 0 1 1 0 8 0
pfrule 1360 7 0 7 3 2 1 1 0 8 1
rttmr 136 1 0 1 1 1 0 1 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 708 0 310 31 5 26 29 0 8 1
art_table 40 710 0 310 5 0 5 5 0 8 0
art_node 32 163 0 83 1 0 1 1 0 8 0
sysvmsgpl 40 8 0 6 1 0 1 1 0 8 0
semapl 64 21 0 11 1 0 1 1 0 8 0
shmpl 112 1 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dirhash: pool(0xffffffff839c7df8:dirhash): free list modified: page 0xffff80002a778000; item ordinal 0; addr 0xffff80002a778000 (p 0xfffffd806ea84000); offset 0x0=0x0
pool(dirhash): free list modified: page 0xffff80002a778000; item ordinal 0; addr 0xffff80002a778000 (p 0xfffffd806ea84000); offset 0x0=0x0
dirhash: pool(0xffffffff839c7df8:dirhash): page inconsistency: page 0xffff80002a778000; item ordinal 1; addr 0x857031c68ace2797
dino2pl 256 2544 0 1078 92 0 92 92 0 8 0
ffsino 256 2544 0 1078 92 0 92 92 0 8 0
nchpl 144 3427 0 1716 64 0 64 64 0 8 0
vnodes 216 3120 0 0 174 0 174 174 0 8 0
namei 1024 11550 0 11550 2 1 1 2 0 8 1
acpiwqpl 32 1 0 1 1 0 1 1 1 8 1
kstatmem 264 41 0 16 2 0 2 2 0 8 0
scsiplug 72 1 0 1 1 1 0 1 0 8 0
scxspl 216 16713 0 16713 10 9 1 8 1 8 1
plimitpl 152 155 0 139 1 0 1 1 0 8 0
sigapl 424 934 0 894 6 1 5 6 0 8 0
knotepl 120 30674 0 30617 40 25 15 16 0 8 11
kqueuepl 184 131 0 121 1 0 1 1 0 8 0
pipepl 304 155 0 127 3 0 3 3 0 8 0
fdescpl 448 921 0 894 4 0 4 4 0 8 0
filepl 120 5316 0 5096 15 2 13 13 0 8 4
lockfpl 104 293 0 291 2 1 1 2 0 8 0
lockfspl 48 140 0 138 1 0 1 1 0 8 0
sessionpl 144 104 0 97 1 0 1 1 0 8 0
pgrppl 48 120 0 105 1 0 1 1 0 8 0
ucredpl 104 939 0 929 1 0 1 1 0 8 0
zombiepl 144 945 0 944 1 0 1 1 0 8 0
processpl 1152 934 0 894 4 0 4 4 0 8 0
processpl: pool(0xffffffff8399e840:processpl): page inconsistency: page 0x0; at page head addr 0xffff80002a747f90 (p 0xffff80002a744000)
procpl 664 1612 0 1563 5 0 5 5 0 8 0
procpl: pool(0xffffffff8399e688:procpl): page inconsistency: page 0x0; at page head addr 0xffff80002a6edf90 (p 0xffff80002a6ec000)
procpl: pool(0xffffffff8399e688:procpl): page inconsistency: page 0x0; at page head addr 0xffff80002a767f90 (p 0xffff80002a766000)
sosppl 176 3 0 3 2 1 1 1 0 8 1
sockpl 552 1048 0 1022 13 1 12 12 0 8 9
mcl64k 65536 31 0 31 3 2 1 1 0 8 1
mcl16k 16384 9 0 9 1 1 0 1 0 8 0
mcl12k 12288 4 0 4 2 2 0 1 0 8 0
mcl9k128 9344 1 0 1 1 1 0 1 0 8 0
mcl8k 8192 13 0 13 3 2 1 1 0 8 1
mcl4k 4096 3190 0 3132 17 8 9 15 0 8 0
mcl2k2 2112 1 0 1 1 0 1 1 0 8 1
mcl2k 2048 683 0 682 4 1 3 3 0 8 2
mtagpl 96 9 0 4 1 0 1 1 0 8 0
mbufpl 256 10914 0 10761 75 1 74 74 0 8 59
bufpl 280 6298 0 103 443 0 443 443 0 8 0
anonpl 24 162213 0 159025 89 14 75 75 0 186 31
amapchunkpl 152 22955 0 22510 40 14 26 34 0 158 8
amappl16 200 3403 0 3355 33 17 16 26 0 8 8
amappl15 192 5 0 5 1 1 0 1 0 8 0
amappl14 184 465 0 465 3 2 1 1 0 8 1
amappl13 176 156 0 147 1 0 1 1 0 8 0
amappl12 168 1172 0 1146 2 0 2 2 0 8 0
amappl11 160 93 0 93 1 1 0 1 0 8 0
amappl10 152 59 0 51 1 0 1 1 0 8 0
amappl9 144 257 0 257 1 1 0 1 0 8 0
amappl8 136 113 0 113 3 2 1 1 0 8 1
amappl7 128 152 0 143 1 0 1 1 0 8 0
amappl6 120 202 0 201 1 0 1 1 0 8 0
amappl5 112 88 0 82 1 0 1 1 0 8 0
amappl4 104 266 0 254 1 0 1 1 0 8 0
amappl3 96 4506 0 4403 3 0 3 3 0 8 0
amappl2 88 549 0 501 2 0 2 2 0 8 0
amappl1 80 11350 0 10866 12 0 12 12 0 8 0
amappl 88 6182 0 6035 4 0 4 4 0 92 0
uvmvnodes 80 130 0 0 3 0 3 3 0 8 0
dma16384 16384 1 0 1 1 0 1 1 0 8 1
dma4096 4096 2 0 2 2 2 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 3 0 0 1 0 1 1 0 8 0
uaddrrnd 24 921 0 894 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 921 0 894 1 0 1 1 0 8 0
vmmpekpl 168 8308 0 8252 3 0 3 3 0 8 0
vmmpepl 168 64881 0 63217 99 6 93 93 0 357 16
vmsppl 368 920 0 894 4 1 3 4 0 8 0
rwobjpl 40 19986 0 19093 15 1 14 14 0 8 0
pdppl 4096 1848 0 1788 100 38 62 76 0 8 2
pvpl 32 418198 0 409181 162 21 141 141 0 265 39
pmappl 216 920 0 894 2 0 2 2 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 446 0 66 11 0 11 11 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
softclock(0) at softclock+0xe7 sys/kern/kern_timeout.c:784
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
buf_get(0,0,ffd000) at buf_get+0x5de sys/kern/vfs_bio.c:1170
geteblk(ffd000) at geteblk+0x3c sys/kern/vfs_bio.c:-1
writedisklabel(d02,ffffffff8111d460,ffff800000039000) at writedisklabel+0x4b sys/arch/amd64/amd64/disksubr.c:133
sdioctl(d01,84946467,ffff8000015bd000,3,ffff8000338ca2b8) at sdioctl+0x959 sys/scsi/sd.c:919
VOP_IOCTL(fffffd8068c926e0,84946467,ffff8000015bd000,3,fffffd8007ffd548,ffff8000338ca2b8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806a5fb350,84946467,ffff8000015bd000,ffff8000338ca2b8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff8000338ca2b8,ffff80003c909cd0,ffff80003c909c20) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80003c909cd0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c909cd0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x370a7f1aef0, count: -13
ddb> machine ddbcpu 1
No such command
ddb> trace
softclock(0) at softclock+0xe7 sys/kern/kern_timeout.c:784
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
buf_get(0,0,ffd000) at buf_get+0x5de sys/kern/vfs_bio.c:1170
geteblk(ffd000) at geteblk+0x3c sys/kern/vfs_bio.c:-1
writedisklabel(d02,ffffffff8111d460,ffff800000039000) at writedisklabel+0x4b sys/arch/amd64/amd64/disksubr.c:133
sdioctl(d01,84946467,ffff8000015bd000,3,ffff8000338ca2b8) at sdioctl+0x959 sys/scsi/sd.c:919
VOP_IOCTL(fffffd8068c926e0,84946467,ffff8000015bd000,3,fffffd8007ffd548,ffff8000338ca2b8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806a5fb350,84946467,ffff8000015bd000,ffff8000338ca2b8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff8000338ca2b8,ffff80003c909cd0,ffff80003c909c20) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80003c909cd0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c909cd0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x370a7f1aef0, count: -13
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
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If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: 3fe334830a75 sync
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1401002e580000
kernel config: https://syzkaller.appspot.com/x/.config?x=1bc15e68cd2a49e5
dashboard link: https://syzkaller.appspot.com/bug?extid=da9c5223d70f4e23edb2
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/53ecb66cbc44/disk-3fe33483.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/ada21bd63dd9/bsd-3fe33483.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/babfb3c32573/kernel-3fe33483.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+da9c52...@syzkaller.appspotmail.com
uvm_fault(0xfffffd8072a58e68, 0x8, 0, 2) -> e
kernel: page fault trap, code=2
Stopped at softclock+0xe7: movq %rcx,0x8(%rax)
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*208479 22862 0 0 0x4000000 0 syz-executor
softclock(0) at softclock+0xe7 sys/kern/kern_timeout.c:784
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
buf_get(0,0,ffd000) at buf_get+0x5de sys/kern/vfs_bio.c:1170
geteblk(ffd000) at geteblk+0x3c sys/kern/vfs_bio.c:-1
writedisklabel(d02,ffffffff8111d460,ffff800000039000) at writedisklabel+0x4b sys/arch/amd64/amd64/disksubr.c:133
sdioctl(d01,84946467,ffff8000015bd000,3,ffff8000338ca2b8) at sdioctl+0x959 sys/scsi/sd.c:919
VOP_IOCTL(fffffd8068c926e0,84946467,ffff8000015bd000,3,fffffd8007ffd548,ffff8000338ca2b8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806a5fb350,84946467,ffff8000015bd000,ffff8000338ca2b8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff8000338ca2b8,ffff80003c909cd0,ffff80003c909c20) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80003c909cd0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c909cd0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x370a7f1aef0, count: 2
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(0xfffffd8072a58e68, 0x8, 0, 2) -> e
ddb> trace
softclock(0) at softclock+0xe7 sys/kern/kern_timeout.c:784
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
buf_get(0,0,ffd000) at buf_get+0x5de sys/kern/vfs_bio.c:1170
geteblk(ffd000) at geteblk+0x3c sys/kern/vfs_bio.c:-1
writedisklabel(d02,ffffffff8111d460,ffff800000039000) at writedisklabel+0x4b sys/arch/amd64/amd64/disksubr.c:133
sdioctl(d01,84946467,ffff8000015bd000,3,ffff8000338ca2b8) at sdioctl+0x959 sys/scsi/sd.c:919
VOP_IOCTL(fffffd8068c926e0,84946467,ffff8000015bd000,3,fffffd8007ffd548,ffff8000338ca2b8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806a5fb350,84946467,ffff8000015bd000,ffff8000338ca2b8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff8000338ca2b8,ffff80003c909cd0,ffff80003c909c20) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80003c909cd0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c909cd0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x370a7f1aef0, count: -13
ddb> show registers
rdi 0xffffffff
rsi 0xd
rbp 0xffff80003c909570
rbx 0x1
rdx 0xffff8000015e5dc0
rcx 0xffffffff839facb0 timeout_todo
rax 0
r8 0xffff80002ecb3ce8
r9 0x21
r10 0xbc566252879f80b6
r11 0x36db93be989fe534
r12 0xffffffff
r13 0xffffffff83a5f6f0 rdrand_tmo
r14 0
r15 0xffff80002a767d30
rip 0xffffffff81e72427 softclock+0xe7
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80003c909530
ss 0x10
softclock+0xe7: movq %rcx,0x8(%rax)
ddb> show proc
PROC (syz-executor) tid=208479 pid=22862 tcnt=3 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=32, usrpri=77, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff8000338ca7e8,0xffff80002d8b0a88
process=0xffff8000ffffa898 user=0xffff80003c904000, vmspace=0xfffffd8072a58e68
estcpu=27, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
2487 453915 0 0 2 0 syz-executor
2487 79381 0 0 3 0x4000080 kqread syz-executor
22862 340291 0 0 2 0 syz-executor
*22862 208479 0 0 7 0x4000000 syz-executor
22862 218284 0 0 3 0x4000080 fsleep syz-executor
53880 300701 57952 0 2 0 syz-executor
53880 265940 57952 0 3 0x4000080 netcon syz-executor
81350 182066 37656 0 2 0 syz-executor
81350 160949 37656 0 3 0x4000080 semwait syz-executor
22288 310857 0 0 2 0 syz-executor
22288 212155 0 0 3 0x4000080 tunread syz-executor
96136 517578 12544 0 2 0 syz-executor
96136 315499 12544 0 3 0x4000080 fsleep syz-executor
5966 265435 19257 0 2 0xc80 syz-executor
5966 151704 19257 0 2 0x4000c80 syz-executor
5966 462667 19257 0 3 0x4000080 fsleep syz-executor
19257 184326 0 0 2 0xc82 syz-executor
12544 113615 0 0 3 0x82 nanoslp syz-executor
30037 13723 1 0 3 0x100083 ttyin getty
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11039 12108K 12460K 166960K 12846 0
pcb 17 12K 12K 166960K 103 0
rtable 212 7K 7K 166960K 541 0
pf 36 14K 19K 166960K 127 0
ifaddr 39 6K 7K 166960K 68 0
ifgroup 55 2K 2K 166960K 84 0
sysctl 4 1K 9K 166960K 10 0
counters 34 17K 17K 166960K 43 0
ioctlops 1 2K 4K 166960K 243 0
iov 0 0K 8K 166960K 20 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1357 85K 85K 166960K 2127 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 7 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 26 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 18 65K 85K 166960K 651 0
sigio 0 0K 0K 166960K 4 0
proc 29 49K 83K 166960K 692 0
subproc 72 4K 4K 166960K 108 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 54 0
in_multi 85 6K 7K 166960K 171 0
ether_multi 1 0K 0K 166960K 8 0
mrt 0 0K 0K 166960K 20 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 73 334K 334K 166960K 73 0
exec 0 0K 1K 166960K 464 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 198 133K 163K 166960K 7028 0
UVM aobj 4 2K 2K 166960K 4 0
pinsyscall 34 68K 90K 166960K 1840 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 11 0
NDP 14 0K 2K 166960K 46 0
temp 48 9108K 9172K 166960K 18172 0
kqueue 14 22K 27K 166960K 106 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 64 0 62 1 0 1 1 0 8 0
rtentry 136 165 0 75 4 0 4 4 0 8 0
unpcb 144 441 0 427 6 0 6 6 0 8 5
syncache 336 4 0 4 1 1 0 1 0 8 0
tcpcb 736 178 0 173 4 0 4 4 0 8 3
arp 96 26 0 10 1 0 1 1 0 8 0
inpcb 328 525 0 515 7 0 7 7 0 8 5
nd6 112 38 0 16 1 0 1 1 0 8 0
pkpcb 40 1 0 1 1 1 0 1 0 8 0
kcovpl 48 12 0 4 1 0 1 1 0 8 0
ppxss 1072 3 0 3 1 1 0 1 0 8 0
pfstscr 40 3 0 0 1 0 1 1 0 8 0
pffrag 232 3 0 0 1 0 1 1 0 482 0
pffrnode 88 3 0 0 1 0 1 1 0 8 0
pffrent 40 3 0 0 1 0 1 1 0 8 0
pfrktable 1344 1 0 1 1 1 0 1 0 8 0
pfsrclim 320 1 0 1 1 1 0 1 0 8 0
pfstlim 224 1 0 1 1 0 1 1 0 8 1
pfanchor 1288 2 0 0 1 0 1 1 0 8 0
pfstitem 24 5 0 0 1 0 1 1 0 8 0
pfstkey 128 6 0 1 1 0 1 1 0 8 0
pfstate 384 4 0 1 1 0 1 1 0 8 0
pfrule 1360 7 0 7 3 2 1 1 0 8 1
rttmr 136 1 0 1 1 1 0 1 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 708 0 310 31 5 26 29 0 8 1
art_table 40 710 0 310 5 0 5 5 0 8 0
art_node 32 163 0 83 1 0 1 1 0 8 0
sysvmsgpl 40 8 0 6 1 0 1 1 0 8 0
semapl 64 21 0 11 1 0 1 1 0 8 0
shmpl 112 1 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dirhash: pool(0xffffffff839c7df8:dirhash): free list modified: page 0xffff80002a778000; item ordinal 0; addr 0xffff80002a778000 (p 0xfffffd806ea84000); offset 0x0=0x0
pool(dirhash): free list modified: page 0xffff80002a778000; item ordinal 0; addr 0xffff80002a778000 (p 0xfffffd806ea84000); offset 0x0=0x0
dirhash: pool(0xffffffff839c7df8:dirhash): page inconsistency: page 0xffff80002a778000; item ordinal 1; addr 0x857031c68ace2797
dino2pl 256 2544 0 1078 92 0 92 92 0 8 0
ffsino 256 2544 0 1078 92 0 92 92 0 8 0
nchpl 144 3427 0 1716 64 0 64 64 0 8 0
vnodes 216 3120 0 0 174 0 174 174 0 8 0
namei 1024 11550 0 11550 2 1 1 2 0 8 1
acpiwqpl 32 1 0 1 1 0 1 1 1 8 1
kstatmem 264 41 0 16 2 0 2 2 0 8 0
scsiplug 72 1 0 1 1 1 0 1 0 8 0
scxspl 216 16713 0 16713 10 9 1 8 1 8 1
plimitpl 152 155 0 139 1 0 1 1 0 8 0
sigapl 424 934 0 894 6 1 5 6 0 8 0
knotepl 120 30674 0 30617 40 25 15 16 0 8 11
kqueuepl 184 131 0 121 1 0 1 1 0 8 0
pipepl 304 155 0 127 3 0 3 3 0 8 0
fdescpl 448 921 0 894 4 0 4 4 0 8 0
filepl 120 5316 0 5096 15 2 13 13 0 8 4
lockfpl 104 293 0 291 2 1 1 2 0 8 0
lockfspl 48 140 0 138 1 0 1 1 0 8 0
sessionpl 144 104 0 97 1 0 1 1 0 8 0
pgrppl 48 120 0 105 1 0 1 1 0 8 0
ucredpl 104 939 0 929 1 0 1 1 0 8 0
zombiepl 144 945 0 944 1 0 1 1 0 8 0
processpl 1152 934 0 894 4 0 4 4 0 8 0
processpl: pool(0xffffffff8399e840:processpl): page inconsistency: page 0x0; at page head addr 0xffff80002a747f90 (p 0xffff80002a744000)
procpl 664 1612 0 1563 5 0 5 5 0 8 0
procpl: pool(0xffffffff8399e688:procpl): page inconsistency: page 0x0; at page head addr 0xffff80002a6edf90 (p 0xffff80002a6ec000)
procpl: pool(0xffffffff8399e688:procpl): page inconsistency: page 0x0; at page head addr 0xffff80002a767f90 (p 0xffff80002a766000)
sosppl 176 3 0 3 2 1 1 1 0 8 1
sockpl 552 1048 0 1022 13 1 12 12 0 8 9
mcl64k 65536 31 0 31 3 2 1 1 0 8 1
mcl16k 16384 9 0 9 1 1 0 1 0 8 0
mcl12k 12288 4 0 4 2 2 0 1 0 8 0
mcl9k128 9344 1 0 1 1 1 0 1 0 8 0
mcl8k 8192 13 0 13 3 2 1 1 0 8 1
mcl4k 4096 3190 0 3132 17 8 9 15 0 8 0
mcl2k2 2112 1 0 1 1 0 1 1 0 8 1
mcl2k 2048 683 0 682 4 1 3 3 0 8 2
mtagpl 96 9 0 4 1 0 1 1 0 8 0
mbufpl 256 10914 0 10761 75 1 74 74 0 8 59
bufpl 280 6298 0 103 443 0 443 443 0 8 0
anonpl 24 162213 0 159025 89 14 75 75 0 186 31
amapchunkpl 152 22955 0 22510 40 14 26 34 0 158 8
amappl16 200 3403 0 3355 33 17 16 26 0 8 8
amappl15 192 5 0 5 1 1 0 1 0 8 0
amappl14 184 465 0 465 3 2 1 1 0 8 1
amappl13 176 156 0 147 1 0 1 1 0 8 0
amappl12 168 1172 0 1146 2 0 2 2 0 8 0
amappl11 160 93 0 93 1 1 0 1 0 8 0
amappl10 152 59 0 51 1 0 1 1 0 8 0
amappl9 144 257 0 257 1 1 0 1 0 8 0
amappl8 136 113 0 113 3 2 1 1 0 8 1
amappl7 128 152 0 143 1 0 1 1 0 8 0
amappl6 120 202 0 201 1 0 1 1 0 8 0
amappl5 112 88 0 82 1 0 1 1 0 8 0
amappl4 104 266 0 254 1 0 1 1 0 8 0
amappl3 96 4506 0 4403 3 0 3 3 0 8 0
amappl2 88 549 0 501 2 0 2 2 0 8 0
amappl1 80 11350 0 10866 12 0 12 12 0 8 0
amappl 88 6182 0 6035 4 0 4 4 0 92 0
uvmvnodes 80 130 0 0 3 0 3 3 0 8 0
dma16384 16384 1 0 1 1 0 1 1 0 8 1
dma4096 4096 2 0 2 2 2 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 3 0 0 1 0 1 1 0 8 0
uaddrrnd 24 921 0 894 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 921 0 894 1 0 1 1 0 8 0
vmmpekpl 168 8308 0 8252 3 0 3 3 0 8 0
vmmpepl 168 64881 0 63217 99 6 93 93 0 357 16
vmsppl 368 920 0 894 4 1 3 4 0 8 0
rwobjpl 40 19986 0 19093 15 1 14 14 0 8 0
pdppl 4096 1848 0 1788 100 38 62 76 0 8 2
pvpl 32 418198 0 409181 162 21 141 141 0 265 39
pmappl 216 920 0 894 2 0 2 2 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 446 0 66 11 0 11 11 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
softclock(0) at softclock+0xe7 sys/kern/kern_timeout.c:784
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
buf_get(0,0,ffd000) at buf_get+0x5de sys/kern/vfs_bio.c:1170
geteblk(ffd000) at geteblk+0x3c sys/kern/vfs_bio.c:-1
writedisklabel(d02,ffffffff8111d460,ffff800000039000) at writedisklabel+0x4b sys/arch/amd64/amd64/disksubr.c:133
sdioctl(d01,84946467,ffff8000015bd000,3,ffff8000338ca2b8) at sdioctl+0x959 sys/scsi/sd.c:919
VOP_IOCTL(fffffd8068c926e0,84946467,ffff8000015bd000,3,fffffd8007ffd548,ffff8000338ca2b8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806a5fb350,84946467,ffff8000015bd000,ffff8000338ca2b8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff8000338ca2b8,ffff80003c909cd0,ffff80003c909c20) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80003c909cd0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c909cd0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x370a7f1aef0, count: -13
ddb> machine ddbcpu 1
No such command
ddb> trace
softclock(0) at softclock+0xe7 sys/kern/kern_timeout.c:784
softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87
dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
buf_get(0,0,ffd000) at buf_get+0x5de sys/kern/vfs_bio.c:1170
geteblk(ffd000) at geteblk+0x3c sys/kern/vfs_bio.c:-1
writedisklabel(d02,ffffffff8111d460,ffff800000039000) at writedisklabel+0x4b sys/arch/amd64/amd64/disksubr.c:133
sdioctl(d01,84946467,ffff8000015bd000,3,ffff8000338ca2b8) at sdioctl+0x959 sys/scsi/sd.c:919
VOP_IOCTL(fffffd8068c926e0,84946467,ffff8000015bd000,3,fffffd8007ffd548,ffff8000338ca2b8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806a5fb350,84946467,ffff8000015bd000,ffff8000338ca2b8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff8000338ca2b8,ffff80003c909cd0,ffff80003c909c20) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80003c909cd0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c909cd0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x370a7f1aef0, count: -13
---
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