kernel:NUM pca
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syzbot
Jun 11, 2026, 3:31:30 AM (yesterday) Jun 11
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 46422b23c8d1 Make list-keys only use a message if -1 is gi..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=105d38ae580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=6b07ab6ba60c7b0f1ae3
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/46d412ed82bc/disk-46422b23.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/5273c28e1fe8/bsd-46422b23.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/cbf1eafaf649/kernel-46422b23.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6b07ab...@syzkaller.appspotmail.com
WuvmA_faNIlGt:( SPL fO700Oe8R4D ON SYSC,L0, 8) 65791 072 Xkernel:0 pca
e Stopped at savectx+0xae: movl $0,%gs:0x688
TID PID UID PRFLAGS PFLAGS CPU COMMAND
482760 28236 0 0 0x4000000 1 syz-executor
*457376 36299 0 0 0x4000000 0 syz-executor
savectx() at savectx+0xae
end of kernel
end trace frame: 0x7b40ba44340, count: 14
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
*cpu1: uvm_fault(0xfffff7006e834b80, 0x98, 0, 1) -> e
ddb{0}> trace
savectx() at savectx+0xae
end of kernel
end trace frame: 0x7b40ba44340, count: -1
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff800037baa8d0
rbx 0
rdx 0xffff8000015f7dc0
rcx 0xffff8000fffe7cb0
rax 0x3a
r8 0xffff800037baa800
r9 0
r10 0xfc8beccb81a1d2fd
r11 0xae62341de9f1ba4d
r12 0
r13 0
r14 0xffff8000fffe7cb0
r15 0
rip 0xffffffff826303ee savectx+0xae
cs 0x8
rflags 0x46
rsp 0xffff800037baa850
ss 0x10
savectx+0xae: movl $0,%gs:0x688
ddb{0}> show proc
PROC (syz-executor) tid=457376 pid=36299 tcnt=2 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=32, usrpri=50, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff8000fffe74e8,0xffff8000fffe6568
process=0xffff8000fffe04f8 user=0xffff800037ba5000, vmspace=0xfffff7006c606208
estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
72125 71282 66801 0 2 0 syz-executor
72125 468925 66801 0 3 0x4000080 fsleep syz-executor
28236 510067 85688 0 2 0 syz-executor
28236 482760 85688 0 7 0x4000000 syz-executor
36299 284940 78143 0 2 0 syz-executor
*36299 457376 78143 0 7 0x4000000 syz-executor
77289 398087 37955 0 3 0x80 nanoslp syz-executor
77289 279965 37955 0 3 0x4000080 fifor syz-executor
77289 217079 37955 0 3 0x4000080 fsleep syz-executor
96956 311528 20538 0 3 0x80 nanoslp syz-executor
96956 205070 20538 0 3 0x4000080 bell syz-executor
96956 489155 20538 0 3 0x4000080 fsleep syz-executor
50746 273723 31224 0 3 0x80 nanoslp syz-executor
50746 39728 31224 0 3 0x4000080 ttyin syz-executor
50746 62650 31224 0 3 0x4000080 fsleep syz-executor
50746 80070 31224 0 3 0x4000080 fsleep syz-executor
6481 66610 9495 0 3 0x2 biowait syz-executor
35028 327977 9495 0 3 0x82 wait syz-executor
78143 495256 9495 0 3 0x82 nanoslp syz-executor
66801 217209 9495 0 3 0x82 nanoslp syz-executor
37955 40668 9495 0 3 0x82 nanoslp syz-executor
31224 9545 9495 0 3 0x82 nanoslp syz-executor
20538 5033 9495 0 3 0x82 nanoslp syz-executor
85688 5487 9495 0 3 0x82 nanoslp syz-executor
9495 438351 1 0 3 0x82 kqread syz-executor
1584 109497 1 0 3 0x1000008a kqread sshd
67133 103363 74791 74 3 0x1100092 bpf pflogd
74791 195938 1 0 3 0x80 sbwait pflogd
42566 64014 78436 73 3 0x1100090 kqread syslogd
78436 404079 1 0 3 0x100082 sbwait syslogd
23874 346851 1 0 3 0x100080 kqread resolvd
36561 132090 84804 77 3 0x100092 kqread dhcpleased
36991 506158 84804 77 3 0x100092 kqread dhcpleased
84804 107130 1 0 3 0x80 kqread dhcpleased
39060 494549 0 0 3 0x14200 pause smr
71369 211894 0 0 2 0x14200 zerothread
34590 165951 0 0 3 0x14200 aiodoned aiodoned
81510 196470 0 0 3 0x14200 syncer update
62128 507641 0 0 3 0x14200 cleaner cleaner
97990 291886 0 0 3 0x14200 reaper reaper
82726 102069 0 0 3 0x14200 pgdaemon pagedaemon
55622 179859 0 0 3 0x14200 bored viomb
5744 467769 0 0 3 0x40014200 acpi0 acpi0
6741 429937 0 0 3 0x40014200 idle1
23383 163647 0 0 3 0x14200 bored softnet1
60189 235556 0 0 3 0x14200 bored softnet0
78790 149227 0 0 3 0x14200 bored systqmp
51947 183073 0 0 3 0x14200 bored systq
45083 420605 0 0 3 0x14200 tmoslp softclockmp
68715 471508 0 0 3 0x40014200 tmoslp softclock
92333 245007 0 0 3 0x40014200 idle0
1 501308 0 0 3 0x82 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex &sched_lock r = 0 (0xffffffff83a64b50)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487
#2 futex_wake+0x245 futex_list_wakeup sys/kern/sys_futex.c:345 [inline]
#2 futex_wake+0x245 sys/kern/sys_futex.c:482
#3 sys_futex+0x1d9 sys/kern/sys_futex.c:158
#4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#5 Xsyscall+0x128
Process 28236 (syz-executor) thread 0xffff8000fffe7250 (482760)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83b19140)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline]
#1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783
#2 Xsyscall+0x128
Process 36299 (syz-executor) thread 0xffff8000fffe74e8 (284940)
exclusive rwlock futexlk r = 0 (0xffffffff83a21268)
#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 futex_wake+0xbc sys/kern/sys_futex.c:467
#3 sys_futex+0x1d9 sys/kern/sys_futex.c:158
#4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#5 Xsyscall+0x128
Process 6481 (syz-executor) thread 0xffff800033396800 (66610)
exclusive rrwlock inode r = 0 (0xfffff7006ee1c118)
#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 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline]
#4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159
#5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232
#6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393
#7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112
#8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394
#9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3062
#10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffff7006ee1ca58)
#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+0x7c5 sys/kern/vfs_lookup.c:250
#7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3047
#8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#9 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11088 12232K 12544K 166960K 12980 0
pcb 17 14K 16K 166960K 174 0
rtable 223 9K 9K 166960K 474 0
pf 37 18K 81K 166960K 144 0
ifaddr 41 7K 8K 166960K 69 0
ifgroup 55 2K 2K 166960K 92 0
sysctl 4 1K 9K 166960K 8 0
counters 70 37K 37K 166960K 106 0
ioctlops 0 0K 4K 166960K 1560 0
iov 0 0K 16K 166960K 14 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1316 83K 84K 166960K 1726 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 9K 166960K 15 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 1K 166960K 44 0
dirhash 12 2K 2K 166960K 18 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 17 61K 89K 166960K 531 0
sigio 0 0K 0K 166960K 5 0
proc 63 99K 164K 166960K 627 0
subproc 72 4K 4K 166960K 81 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 37 0
in_multi 91 6K 7K 166960K 129 0
ether_multi 1 0K 0K 166960K 2 0
mrt 1 0K 0K 166960K 22 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 85 387K 387K 166960K 85 0
exec 0 0K 1K 166960K 453 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 221 138K 164K 166960K 6813 0
UVM aobj 19 2K 2K 166960K 20 0
pinsyscall 35 70K 103K 166960K 1768 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 26 0
NDP 14 0K 2K 166960K 44 0
temp 56 9118K 9180K 166960K 22949 0
kqueue 11 16K 34K 166960K 99 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 26 0 0 1 0 1 1 0 8 0
rtpcb 120 68 0 63 1 0 1 1 0 8 0
rtentry 176 138 0 46 6 0 6 6 0 8 0
unpcb 144 347 0 331 4 0 4 4 0 8 3
syncache 336 6 0 6 1 0 1 1 0 8 1
tcpcb 736 88 0 85 1 0 1 1 0 8 0
arp 136 22 0 5 1 0 1 1 0 8 0
inpcb 328 423 0 417 7 2 5 7 0 8 3
nd6 152 30 0 7 1 0 1 1 0 8 0
pkpcb 40 1 0 1 1 0 1 1 0 8 1
kcovpl 48 9 0 1 1 0 1 1 0 8 0
mppekey 1024 2 0 2 1 1 0 1 0 8 0
ppxss 1192 14 0 14 1 0 1 1 0 8 1
pppxif 1576 2 0 2 1 1 0 1 0 8 0
pfstscr 40 5 0 3 1 0 1 1 0 8 0
pffrag 232 2 0 0 1 0 1 1 0 482 0
pffrnode 88 2 0 0 1 0 1 1 0 8 0
pffrent 40 3 0 1 1 0 1 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
pfanchor 1288 13 0 9 1 0 1 1 0 8 0
pftag 88 3 0 0 1 0 1 1 0 8 0
pfqueue 320 1 0 0 1 0 1 1 0 8 0
pfstitem 24 50 0 2 1 0 1 1 0 8 0
pfstkey 128 51 0 3 2 0 2 2 0 8 0
pfstate 448 48 0 2 6 0 6 6 0 8 0
pfrule 1360 28 0 23 2 1 1 2 0 8 0
rttmr 136 3 0 3 1 0 1 1 0 8 1
art_heap8 4096 3 0 0 3 0 3 3 0 8 0
art_heap4 256 666 0 255 31 1 30 31 0 8 3
art_table 40 669 0 255 5 0 5 5 0 8 0
art_node 32 138 0 55 1 0 1 1 0 8 0
sysvmsgpl 40 11 0 3 1 0 1 1 0 8 0
semupl 112 2 0 2 1 1 0 1 0 8 0
semapl 72 36 0 26 1 0 1 1 0 8 0
shmpl 112 17 0 1 1 0 1 1 0 8 0
dirhash 1024 21 0 4 3 0 3 3 0 8 0
dino2pl 256 2287 0 827 93 0 93 93 0 8 0
ffsino 296 2287 0 827 114 0 114 114 0 8 0
nchpl 144 2990 0 1282 64 0 64 64 0 8 0
rtmask 32 2 0 2 1 0 1 1 0 8 1
vnodes 216 2610 0 0 145 0 145 145 0 8 0
namei 1024 9692 0 9691 2 1 1 2 0 8 0
percpumem 16 68 0 18 1 0 1 1 0 8 0
kstatmem 264 55 0 28 3 0 3 3 0 8 1
scsiplug 72 2 0 2 1 0 1 1 0 8 1
scxspl 216 12315 0 12314 10 2 8 8 1 8 7
plimitpl 152 78 0 63 1 0 1 1 0 8 0
sigapl 424 880 0 836 8 0 8 8 0 8 2
knotepl 120 312 0 0 10 0 10 10 0 8 0
kqueuepl 224 127 0 120 2 0 2 2 0 8 1
pipepl 344 158 0 131 3 0 3 3 0 8 0
fdescpl 528 844 0 817 3 0 3 3 0 8 0
filepl 160 4191 0 3978 14 0 14 14 0 8 3
lockfpl 104 236 0 234 1 0 1 1 0 8 0
lockfspl 48 105 0 103 1 0 1 1 0 8 0
sessionpl 144 38 0 30 1 0 1 1 0 8 0
pgrppl 48 51 0 35 1 0 1 1 0 8 0
ucredpl 104 459 0 446 1 0 1 1 0 8 0
zombiepl 144 838 0 836 1 0 1 1 0 8 0
processpl 1232 880 0 836 6 0 6 6 0 8 1
procpl 664 1564 0 1510 8 0 8 8 0 8 2
sockpl 752 853 0 826 11 0 11 11 0 8 7
mcl64k 65536 3 0 0 1 0 1 1 0 8 0
mcl16k 16384 2 0 0 1 0 1 1 0 8 0
mcl9k128 9344 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 124 0 0 16 0 16 16 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 32 0 0 4 0 4 4 0 8 0
mtagpl 96 6 0 0 1 0 1 1 0 8 0
mbufpl 256 260 0 0 17 0 17 17 0 8 0
bufpl 272 4368 0 107 285 0 285 285 0 8 0
anonpl 32 7501 0 0 61 0 61 61 0 246 0
amapchunkpl 152 20632 0 20156 28 0 28 28 0 158 7
amappl16 200 2615 0 2585 14 1 13 14 0 8 8
amappl15 192 6 0 6 1 1 0 1 0 8 0
amappl14 184 497 0 497 1 0 1 1 0 8 1
amappl13 176 157 0 148 1 0 1 1 0 8 0
amappl12 168 1109 0 1083 2 0 2 2 0 8 0
amappl11 160 3 0 3 1 1 0 1 0 8 0
amappl10 152 63 0 49 1 0 1 1 0 8 0
amappl9 144 323 0 323 1 1 0 1 0 8 0
amappl8 136 145 0 142 1 0 1 1 0 8 0
amappl7 128 155 0 144 1 0 1 1 0 8 0
amappl6 120 173 0 172 1 0 1 1 0 8 0
amappl5 112 123 0 114 1 0 1 1 0 8 0
amappl4 104 344 0 323 1 0 1 1 0 8 0
amappl3 96 4164 0 4052 5 1 4 4 0 8 0
amappl2 88 597 0 546 2 0 2 2 0 8 0
amappl1 80 13015 0 12603 16 0 16 16 0 8 5
amappl 88 5961 0 5801 5 0 5 5 0 92 1
uvmvnodes 80 115 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 19 0 1 1 0 1 1 0 8 0
uaddrrnd 24 844 0 817 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 844 0 817 1 0 1 1 0 8 0
vmmpekpl 168 9061 0 9024 2 0 2 2 0 8 0
vmmpepl 168 63118 0 61532 96 0 96 96 0 357 14
vmsppl 488 843 0 817 5 0 5 5 0 8 1
rwobjpl 80 20635 0 19718 27 1 26 27 0 8 1
pdppl 4096 1695 0 1634 107 40 67 83 0 8 6
pvpl 32 14392 0 0 117 0 117 117 0 265 0
pmappl 256 843 0 817 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 581 0 46 16 0 16 16 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
savectx() at savectx+0xae
end of kernel
end trace frame: 0x7b40ba44340, count: -1
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
x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:682
acpitimer_delay(1) at acpitimer_delay+0x57 acpitimer_read sys/dev/acpi/acpitimer.c:141 [inline]
acpitimer_delay(1) at acpitimer_delay+0x57 sys/dev/acpi/acpitimer.c:120
comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1274
cnputc(20) at cnputc+0x67 sys/dev/cons.c:218
db_putchar(66) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline]
db_putchar(66) at db_putchar+0x126 sys/ddb/db_output.c:153
kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1
db_printf(ffffffff834ac313) at db_printf+0x9b sys/kern/subr_prf.c:-1
db_ktrap(6,0,ffff800037bb0940) at db_ktrap+0x1b6 db_printtrap sys/arch/amd64/amd64/db_interface.c:103 [inline]
db_ktrap(6,0,ffff800037bb0940) at db_ktrap+0x1b6 sys/arch/amd64/amd64/db_interface.c:128
kerntrap(ffff800037bb0940) at kerntrap+0x243 sys/arch/amd64/amd64/trap.c:519
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dovutimens(ffff8000fffe7250,fffff700749c3cb0,ffff800037bb0b20) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2690
end trace frame: 0xffff800037bb0b90, count: 0
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
x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:682
acpitimer_delay(1) at acpitimer_delay+0x57 acpitimer_read sys/dev/acpi/acpitimer.c:141 [inline]
acpitimer_delay(1) at acpitimer_delay+0x57 sys/dev/acpi/acpitimer.c:120
comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1274
cnputc(20) at cnputc+0x67 sys/dev/cons.c:218
db_putchar(66) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline]
db_putchar(66) at db_putchar+0x126 sys/ddb/db_output.c:153
kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1
db_printf(ffffffff834ac313) at db_printf+0x9b sys/kern/subr_prf.c:-1
db_ktrap(6,0,ffff800037bb0940) at db_ktrap+0x1b6 db_printtrap sys/arch/amd64/amd64/db_interface.c:103 [inline]
db_ktrap(6,0,ffff800037bb0940) at db_ktrap+0x1b6 sys/arch/amd64/amd64/db_interface.c:128
kerntrap(ffff800037bb0940) at kerntrap+0x243 sys/arch/amd64/amd64/trap.c:519
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dovutimens(ffff8000fffe7250,fffff700749c3cb0,ffff800037bb0b20) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2690
sys_futimes(ffff8000fffe7250,ffff800037bb0c70,ffff800037bb0bc0) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2732
syscall(ffff800037bb0c70) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800037bb0c70) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x54016ac58e0, count: -17
ddb{1}>
---
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syzbot found the following issue on:
HEAD commit: 46422b23c8d1 Make list-keys only use a message if -1 is gi..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=105d38ae580000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=6b07ab6ba60c7b0f1ae3
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/46d412ed82bc/disk-46422b23.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/5273c28e1fe8/bsd-46422b23.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/cbf1eafaf649/kernel-46422b23.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+6b07ab...@syzkaller.appspotmail.com
WuvmA_faNIlGt:( SPL fO700Oe8R4D ON SYSC,L0, 8) 65791 072 Xkernel:0 pca
e Stopped at savectx+0xae: movl $0,%gs:0x688
TID PID UID PRFLAGS PFLAGS CPU COMMAND
482760 28236 0 0 0x4000000 1 syz-executor
*457376 36299 0 0 0x4000000 0 syz-executor
savectx() at savectx+0xae
end of kernel
end trace frame: 0x7b40ba44340, count: 14
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
*cpu1: uvm_fault(0xfffff7006e834b80, 0x98, 0, 1) -> e
ddb{0}> trace
savectx() at savectx+0xae
end of kernel
end trace frame: 0x7b40ba44340, count: -1
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff800037baa8d0
rbx 0
rdx 0xffff8000015f7dc0
rcx 0xffff8000fffe7cb0
rax 0x3a
r8 0xffff800037baa800
r9 0
r10 0xfc8beccb81a1d2fd
r11 0xae62341de9f1ba4d
r12 0
r13 0
r14 0xffff8000fffe7cb0
r15 0
rip 0xffffffff826303ee savectx+0xae
cs 0x8
rflags 0x46
rsp 0xffff800037baa850
ss 0x10
savectx+0xae: movl $0,%gs:0x688
ddb{0}> show proc
PROC (syz-executor) tid=457376 pid=36299 tcnt=2 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=32, usrpri=50, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff8000fffe74e8,0xffff8000fffe6568
process=0xffff8000fffe04f8 user=0xffff800037ba5000, vmspace=0xfffff7006c606208
estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
72125 71282 66801 0 2 0 syz-executor
72125 468925 66801 0 3 0x4000080 fsleep syz-executor
28236 510067 85688 0 2 0 syz-executor
28236 482760 85688 0 7 0x4000000 syz-executor
36299 284940 78143 0 2 0 syz-executor
*36299 457376 78143 0 7 0x4000000 syz-executor
77289 398087 37955 0 3 0x80 nanoslp syz-executor
77289 279965 37955 0 3 0x4000080 fifor syz-executor
77289 217079 37955 0 3 0x4000080 fsleep syz-executor
96956 311528 20538 0 3 0x80 nanoslp syz-executor
96956 205070 20538 0 3 0x4000080 bell syz-executor
96956 489155 20538 0 3 0x4000080 fsleep syz-executor
50746 273723 31224 0 3 0x80 nanoslp syz-executor
50746 39728 31224 0 3 0x4000080 ttyin syz-executor
50746 62650 31224 0 3 0x4000080 fsleep syz-executor
50746 80070 31224 0 3 0x4000080 fsleep syz-executor
6481 66610 9495 0 3 0x2 biowait syz-executor
35028 327977 9495 0 3 0x82 wait syz-executor
78143 495256 9495 0 3 0x82 nanoslp syz-executor
66801 217209 9495 0 3 0x82 nanoslp syz-executor
37955 40668 9495 0 3 0x82 nanoslp syz-executor
31224 9545 9495 0 3 0x82 nanoslp syz-executor
20538 5033 9495 0 3 0x82 nanoslp syz-executor
85688 5487 9495 0 3 0x82 nanoslp syz-executor
9495 438351 1 0 3 0x82 kqread syz-executor
1584 109497 1 0 3 0x1000008a kqread sshd
67133 103363 74791 74 3 0x1100092 bpf pflogd
74791 195938 1 0 3 0x80 sbwait pflogd
42566 64014 78436 73 3 0x1100090 kqread syslogd
78436 404079 1 0 3 0x100082 sbwait syslogd
23874 346851 1 0 3 0x100080 kqread resolvd
36561 132090 84804 77 3 0x100092 kqread dhcpleased
36991 506158 84804 77 3 0x100092 kqread dhcpleased
84804 107130 1 0 3 0x80 kqread dhcpleased
39060 494549 0 0 3 0x14200 pause smr
71369 211894 0 0 2 0x14200 zerothread
34590 165951 0 0 3 0x14200 aiodoned aiodoned
81510 196470 0 0 3 0x14200 syncer update
62128 507641 0 0 3 0x14200 cleaner cleaner
97990 291886 0 0 3 0x14200 reaper reaper
82726 102069 0 0 3 0x14200 pgdaemon pagedaemon
55622 179859 0 0 3 0x14200 bored viomb
5744 467769 0 0 3 0x40014200 acpi0 acpi0
6741 429937 0 0 3 0x40014200 idle1
23383 163647 0 0 3 0x14200 bored softnet1
60189 235556 0 0 3 0x14200 bored softnet0
78790 149227 0 0 3 0x14200 bored systqmp
51947 183073 0 0 3 0x14200 bored systq
45083 420605 0 0 3 0x14200 tmoslp softclockmp
68715 471508 0 0 3 0x40014200 tmoslp softclock
92333 245007 0 0 3 0x40014200 idle0
1 501308 0 0 3 0x82 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex &sched_lock r = 0 (0xffffffff83a64b50)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487
#2 futex_wake+0x245 futex_list_wakeup sys/kern/sys_futex.c:345 [inline]
#2 futex_wake+0x245 sys/kern/sys_futex.c:482
#3 sys_futex+0x1d9 sys/kern/sys_futex.c:158
#4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#5 Xsyscall+0x128
Process 28236 (syz-executor) thread 0xffff8000fffe7250 (482760)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83b19140)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline]
#1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783
#2 Xsyscall+0x128
Process 36299 (syz-executor) thread 0xffff8000fffe74e8 (284940)
exclusive rwlock futexlk r = 0 (0xffffffff83a21268)
#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 futex_wake+0xbc sys/kern/sys_futex.c:467
#3 sys_futex+0x1d9 sys/kern/sys_futex.c:158
#4 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#4 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#5 Xsyscall+0x128
Process 6481 (syz-executor) thread 0xffff800033396800 (66610)
exclusive rrwlock inode r = 0 (0xfffff7006ee1c118)
#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 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline]
#4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159
#5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232
#6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393
#7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112
#8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394
#9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3062
#10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffff7006ee1ca58)
#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+0x7c5 sys/kern/vfs_lookup.c:250
#7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3047
#8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#9 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11088 12232K 12544K 166960K 12980 0
pcb 17 14K 16K 166960K 174 0
rtable 223 9K 9K 166960K 474 0
pf 37 18K 81K 166960K 144 0
ifaddr 41 7K 8K 166960K 69 0
ifgroup 55 2K 2K 166960K 92 0
sysctl 4 1K 9K 166960K 8 0
counters 70 37K 37K 166960K 106 0
ioctlops 0 0K 4K 166960K 1560 0
iov 0 0K 16K 166960K 14 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1316 83K 84K 166960K 1726 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 9K 166960K 15 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 1K 166960K 44 0
dirhash 12 2K 2K 166960K 18 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 17 61K 89K 166960K 531 0
sigio 0 0K 0K 166960K 5 0
proc 63 99K 164K 166960K 627 0
subproc 72 4K 4K 166960K 81 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 37 0
in_multi 91 6K 7K 166960K 129 0
ether_multi 1 0K 0K 166960K 2 0
mrt 1 0K 0K 166960K 22 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 85 387K 387K 166960K 85 0
exec 0 0K 1K 166960K 453 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 221 138K 164K 166960K 6813 0
UVM aobj 19 2K 2K 166960K 20 0
pinsyscall 35 70K 103K 166960K 1768 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 26 0
NDP 14 0K 2K 166960K 44 0
temp 56 9118K 9180K 166960K 22949 0
kqueue 11 16K 34K 166960K 99 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 26 0 0 1 0 1 1 0 8 0
rtpcb 120 68 0 63 1 0 1 1 0 8 0
rtentry 176 138 0 46 6 0 6 6 0 8 0
unpcb 144 347 0 331 4 0 4 4 0 8 3
syncache 336 6 0 6 1 0 1 1 0 8 1
tcpcb 736 88 0 85 1 0 1 1 0 8 0
arp 136 22 0 5 1 0 1 1 0 8 0
inpcb 328 423 0 417 7 2 5 7 0 8 3
nd6 152 30 0 7 1 0 1 1 0 8 0
pkpcb 40 1 0 1 1 0 1 1 0 8 1
kcovpl 48 9 0 1 1 0 1 1 0 8 0
mppekey 1024 2 0 2 1 1 0 1 0 8 0
ppxss 1192 14 0 14 1 0 1 1 0 8 1
pppxif 1576 2 0 2 1 1 0 1 0 8 0
pfstscr 40 5 0 3 1 0 1 1 0 8 0
pffrag 232 2 0 0 1 0 1 1 0 482 0
pffrnode 88 2 0 0 1 0 1 1 0 8 0
pffrent 40 3 0 1 1 0 1 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
pfanchor 1288 13 0 9 1 0 1 1 0 8 0
pftag 88 3 0 0 1 0 1 1 0 8 0
pfqueue 320 1 0 0 1 0 1 1 0 8 0
pfstitem 24 50 0 2 1 0 1 1 0 8 0
pfstkey 128 51 0 3 2 0 2 2 0 8 0
pfstate 448 48 0 2 6 0 6 6 0 8 0
pfrule 1360 28 0 23 2 1 1 2 0 8 0
rttmr 136 3 0 3 1 0 1 1 0 8 1
art_heap8 4096 3 0 0 3 0 3 3 0 8 0
art_heap4 256 666 0 255 31 1 30 31 0 8 3
art_table 40 669 0 255 5 0 5 5 0 8 0
art_node 32 138 0 55 1 0 1 1 0 8 0
sysvmsgpl 40 11 0 3 1 0 1 1 0 8 0
semupl 112 2 0 2 1 1 0 1 0 8 0
semapl 72 36 0 26 1 0 1 1 0 8 0
shmpl 112 17 0 1 1 0 1 1 0 8 0
dirhash 1024 21 0 4 3 0 3 3 0 8 0
dino2pl 256 2287 0 827 93 0 93 93 0 8 0
ffsino 296 2287 0 827 114 0 114 114 0 8 0
nchpl 144 2990 0 1282 64 0 64 64 0 8 0
rtmask 32 2 0 2 1 0 1 1 0 8 1
vnodes 216 2610 0 0 145 0 145 145 0 8 0
namei 1024 9692 0 9691 2 1 1 2 0 8 0
percpumem 16 68 0 18 1 0 1 1 0 8 0
kstatmem 264 55 0 28 3 0 3 3 0 8 1
scsiplug 72 2 0 2 1 0 1 1 0 8 1
scxspl 216 12315 0 12314 10 2 8 8 1 8 7
plimitpl 152 78 0 63 1 0 1 1 0 8 0
sigapl 424 880 0 836 8 0 8 8 0 8 2
knotepl 120 312 0 0 10 0 10 10 0 8 0
kqueuepl 224 127 0 120 2 0 2 2 0 8 1
pipepl 344 158 0 131 3 0 3 3 0 8 0
fdescpl 528 844 0 817 3 0 3 3 0 8 0
filepl 160 4191 0 3978 14 0 14 14 0 8 3
lockfpl 104 236 0 234 1 0 1 1 0 8 0
lockfspl 48 105 0 103 1 0 1 1 0 8 0
sessionpl 144 38 0 30 1 0 1 1 0 8 0
pgrppl 48 51 0 35 1 0 1 1 0 8 0
ucredpl 104 459 0 446 1 0 1 1 0 8 0
zombiepl 144 838 0 836 1 0 1 1 0 8 0
processpl 1232 880 0 836 6 0 6 6 0 8 1
procpl 664 1564 0 1510 8 0 8 8 0 8 2
sockpl 752 853 0 826 11 0 11 11 0 8 7
mcl64k 65536 3 0 0 1 0 1 1 0 8 0
mcl16k 16384 2 0 0 1 0 1 1 0 8 0
mcl9k128 9344 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 124 0 0 16 0 16 16 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 32 0 0 4 0 4 4 0 8 0
mtagpl 96 6 0 0 1 0 1 1 0 8 0
mbufpl 256 260 0 0 17 0 17 17 0 8 0
bufpl 272 4368 0 107 285 0 285 285 0 8 0
anonpl 32 7501 0 0 61 0 61 61 0 246 0
amapchunkpl 152 20632 0 20156 28 0 28 28 0 158 7
amappl16 200 2615 0 2585 14 1 13 14 0 8 8
amappl15 192 6 0 6 1 1 0 1 0 8 0
amappl14 184 497 0 497 1 0 1 1 0 8 1
amappl13 176 157 0 148 1 0 1 1 0 8 0
amappl12 168 1109 0 1083 2 0 2 2 0 8 0
amappl11 160 3 0 3 1 1 0 1 0 8 0
amappl10 152 63 0 49 1 0 1 1 0 8 0
amappl9 144 323 0 323 1 1 0 1 0 8 0
amappl8 136 145 0 142 1 0 1 1 0 8 0
amappl7 128 155 0 144 1 0 1 1 0 8 0
amappl6 120 173 0 172 1 0 1 1 0 8 0
amappl5 112 123 0 114 1 0 1 1 0 8 0
amappl4 104 344 0 323 1 0 1 1 0 8 0
amappl3 96 4164 0 4052 5 1 4 4 0 8 0
amappl2 88 597 0 546 2 0 2 2 0 8 0
amappl1 80 13015 0 12603 16 0 16 16 0 8 5
amappl 88 5961 0 5801 5 0 5 5 0 92 1
uvmvnodes 80 115 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 19 0 1 1 0 1 1 0 8 0
uaddrrnd 24 844 0 817 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 844 0 817 1 0 1 1 0 8 0
vmmpekpl 168 9061 0 9024 2 0 2 2 0 8 0
vmmpepl 168 63118 0 61532 96 0 96 96 0 357 14
vmsppl 488 843 0 817 5 0 5 5 0 8 1
rwobjpl 80 20635 0 19718 27 1 26 27 0 8 1
pdppl 4096 1695 0 1634 107 40 67 83 0 8 6
pvpl 32 14392 0 0 117 0 117 117 0 265 0
pmappl 256 843 0 817 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 581 0 46 16 0 16 16 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
savectx() at savectx+0xae
end of kernel
end trace frame: 0x7b40ba44340, count: -1
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
x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:682
acpitimer_delay(1) at acpitimer_delay+0x57 acpitimer_read sys/dev/acpi/acpitimer.c:141 [inline]
acpitimer_delay(1) at acpitimer_delay+0x57 sys/dev/acpi/acpitimer.c:120
comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1274
cnputc(20) at cnputc+0x67 sys/dev/cons.c:218
db_putchar(66) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline]
db_putchar(66) at db_putchar+0x126 sys/ddb/db_output.c:153
kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1
db_printf(ffffffff834ac313) at db_printf+0x9b sys/kern/subr_prf.c:-1
db_ktrap(6,0,ffff800037bb0940) at db_ktrap+0x1b6 db_printtrap sys/arch/amd64/amd64/db_interface.c:103 [inline]
db_ktrap(6,0,ffff800037bb0940) at db_ktrap+0x1b6 sys/arch/amd64/amd64/db_interface.c:128
kerntrap(ffff800037bb0940) at kerntrap+0x243 sys/arch/amd64/amd64/trap.c:519
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dovutimens(ffff8000fffe7250,fffff700749c3cb0,ffff800037bb0b20) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2690
end trace frame: 0xffff800037bb0b90, count: 0
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
x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:682
acpitimer_delay(1) at acpitimer_delay+0x57 acpitimer_read sys/dev/acpi/acpitimer.c:141 [inline]
acpitimer_delay(1) at acpitimer_delay+0x57 sys/dev/acpi/acpitimer.c:120
comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1274
cnputc(20) at cnputc+0x67 sys/dev/cons.c:218
db_putchar(66) at db_putchar+0x126 db_force_whitespace sys/ddb/db_output.c:102 [inline]
db_putchar(66) at db_putchar+0x126 sys/ddb/db_output.c:153
kprintf() at kprintf+0x29c5 sys/kern/subr_prf.c:-1
db_printf(ffffffff834ac313) at db_printf+0x9b sys/kern/subr_prf.c:-1
db_ktrap(6,0,ffff800037bb0940) at db_ktrap+0x1b6 db_printtrap sys/arch/amd64/amd64/db_interface.c:103 [inline]
db_ktrap(6,0,ffff800037bb0940) at db_ktrap+0x1b6 sys/arch/amd64/amd64/db_interface.c:128
kerntrap(ffff800037bb0940) at kerntrap+0x243 sys/arch/amd64/amd64/trap.c:519
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dovutimens(ffff8000fffe7250,fffff700749c3cb0,ffff800037bb0b20) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2690
sys_futimes(ffff8000fffe7250,ffff800037bb0c70,ffff800037bb0bc0) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2732
syscall(ffff800037bb0c70) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800037bb0c70) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x54016ac58e0, count: -17
ddb{1}>
---
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