uvm_fault(0xfffffd806c63d5d0, 0x98, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff827885d8 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff80003c3fad70
gsbase 0xffff80002999dff0 kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff827885d8
Starting stack trace...
panic(ffffffff834ed534) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff80003c3facc0) at kerntrap+0x30b
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dovutimens(ffff80003679e558,fffffd8061e00528,ffff80003c3faea0) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2690
sys_futimes(ffff80003679e558,ffff80003c3faff0,ffff80003c3faf40) at sys_futimes+0x208 sys/kern/vfs_syscalls.c:2732
syscall(ffff80003c3faff0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c3faff0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xff93e3eeb0, count: 250
End of stack trace.
WARNING: SPL NOT LOWERED ON SYSCALL 83 858154752 EXIT 0 4
Stopped at savectx+0xae: movl $0,%gs:0x688
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*516826 31318 0 0 0 1 syz-executor
47096 92144 0 0 0 0 syz-executor
savectx() at savectx+0xae
end of kernel
end trace frame: 0x761d346e1970, 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{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: uvm_fault(0xfffffd806c63d5d0, 0x98, 0, 1) -> e
ddb{1}> trace
savectx() at savectx+0xae
end of kernel
end trace frame: 0x761d346e1970, count: -1
ddb{1}> show registers
rdi 0
rsi 0
rbp 0xffff80003c4715a0
rbx 0
rdx 0
rcx 0xffff8000fffeea78
rax 0x3a
r8 0xffff80003c4714d0
r9 0x1
r10 0x4685ab369341e3ba
r11 0x34f90645f048bdad
r12 0
r13 0
r14 0xffff8000fffeea78
r15 0
rip 0xffffffff82a403ee savectx+0xae
cs 0x8
rflags 0x46
rsp 0xffff80003c471520
ss 0x10
savectx+0xae: movl $0,%gs:0x688
ddb{1}> show proc
PROC (syz-executor) tid=516826 pid=31318 tcnt=2 stat=onproc
flags process=0 proc=0
runpri=81, usrpri=82, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff8000fffefca0,0xffff80003679f790
process=0xffff80003c46a1d8 user=0xffff80003c46c000, vmspace=0xfffffd806a5773f8
estcpu=32, cpticks=104, pctcpu=0.86, user=1, sys=103, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*31318 516826 25836 0 7 0 syz-executor
31318 225614 25836 0 3 0x4000080 fsleep syz-executor
95516 196180 57040 0 2 0x2 ifconfig
57040 523701 30184 0 3 0x10008a sigsusp sh
66925 428775 85382 0 2 0 syz-executor
66925 395170 85382 0 3 0x4000000 sbar syz-executor
92144 47096 82518 0 7 0 syz-executor
92144 380354 82518 0 3 0x4000000 biowait syz-executor
57460 110710 33257 60928 2 0x10 syz-executor
57460 394958 33257 60928 2 0x4000010 syz-executor
24759 122454 72179 0 2 0 syz-executor
24759 13846 72179 0 3 0x4000080 fsleep syz-executor
24759 24968 72179 0 3 0x4000080 fsleep syz-executor
47069 430652 45259 0 2 0 syz-executor
47069 92299 45259 0 3 0x4000080 fsleep syz-executor
47069 28383 45259 0 3 0x4000080 fsleep syz-executor
47069 270698 45259 0 3 0x4000080 fsleep syz-executor
30184 185629 68802 0 3 0x82 wait syz-executor
50632 424141 0 0 3 0x14280 nfsidl nfsio
1437 57270 0 0 3 0x14280 nfsidl nfsio
54855 359990 0 0 3 0x14280 nfsidl nfsio
19388 58869 0 0 3 0x14280 nfsidl nfsio
55873 277707 0 0 3 0x14280 nfsidl nfsio
28440 177724 0 0 3 0x14280 nfsidl nfsio
18320 110660 0 0 3 0x14280 nfsidl nfsio
98867 41987 0 0 3 0x14280 nfsidl nfsio
54275 117009 0 0 3 0x14280 nfsidl nfsio
5639 335256 0 0 3 0x14280 nfsidl nfsio
86568 40428 0 0 3 0x14280 nfsidl nfsio
9110 199359 0 0 3 0x14280 nfsidl nfsio
81172 26474 0 0 3 0x14280 nfsidl nfsio
20082 314370 0 0 3 0x14280 nfsidl nfsio
42413 443639 0 0 3 0x14280 nfsidl nfsio
76304 104469 0 0 3 0x14280 nfsidl nfsio
32009 27356 0 0 3 0x14280 nfsidl nfsio
93176 345829 0 0 3 0x14280 nfsidl nfsio
30261 288238 0 0 3 0x14280 nfsidl nfsio
61939 311432 0 0 3 0x14280 nfsidl nfsio
33257 290741 68802 0 2 0xc82 syz-executor
11142 20742 68802 0 2 0x2 syz-executor
72179 176045 68802 0 2 0xc82 syz-executor
25836 19810 68802 0 2 0xc82 syz-executor
45259 34720 68802 0 2 0xc82 syz-executor
82518 66916 68802 0 2 0xc82 syz-executor
85382 300317 68802 0 2 0xc82 syz-executor
68802 284474 50727 0 3 0x82 kqread syz-executor
50727 241608 64093 0 3 0x10008a sigsusp ksh
64093 58760 84509 0 3 0x98 kqread sshd-session
84509 96616 98048 0 3 0x92 kqread sshd-session
72460 428598 1 0 3 0x100083 ttyopn getty
98048 514744 1 0 3 0x88 kqread sshd
21007 503186 95413 74 3 0x1100092 bpf pflogd
95413 445771 1 0 3 0x80 sbwait pflogd
1005 221420 45999 73 3 0x1100090 kqread syslogd
45999 401981 1 0 3 0x100082 sbwait syslogd
41751 369808 1 0 3 0x100080 kqread resolvd
64851 90327 66891 77 3 0x100092 kqread dhcpleased
43364 457364 66891 77 3 0x100092 kqread dhcpleased
66891 210557 1 0 3 0x80 kqread dhcpleased
60788 170945 0 0 3 0x14200 bored smr
65462 461649 0 0 2 0x14200 zerothread
10260 431953 0 0 3 0x14200 aiodoned aiodoned
54675 199542 0 0 3 0x14200 syncer update
62393 343131 0 0 3 0x14200 cleaner cleaner
6151 427231 0 0 3 0x14200 reaper reaper
92883 51176 0 0 3 0x14200 pgdaemon pagedaemon
74004 269217 0 0 3 0x14200 bored viomb
40031 390801 0 0 3 0x40014200 acpi0 acpi0
49089 112655 0 0 3 0x40014200 idle1
83060 245049 0 0 3 0x14200 bored softnet1
71052 359666 0 0 3 0x14200 netlock softnet0
75667 440499 0 0 2 0x40014200 systqmp
45069 25035 0 0 3 0x14200 bored systq
94426 49987 0 0 3 0x14200 tmoslp softclockmp
40519 182364 0 0 3 0x40014200 tmoslp softclock
41323 318495 0 0 3 0x40014200 idle0
1 58229 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 66925 (syz-executor) thread 0xffff80003679e558 (395170)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a3e580)
#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 92144 (syz-executor) thread 0xffff800038bb1cb8 (380354)
exclusive rrwlock inode r = 0 (0xfffffd806e643580)
#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_makeinode+0xcd sys/ufs/ufs/ufs_vnops.c:1759
#8 ufs_create+0x4e sys/ufs/ufs/ufs_vnops.c:147
#9 VOP_CREATE+0xfe sys/kern/vfs_vops.c:103
#10 vn_open+0x50d sys/kern/vfs_vnops.c:118
#11 doopenat+0x35b sys/kern/vfs_syscalls.c:1162
#12 sys_open+0x59 sys/kern/vfs_syscalls.c:1064
#13 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#13 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806e458b80)
#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 vn_open+0x22e sys/kern/vfs_vnops.c:109
#8 doopenat+0x35b sys/kern/vfs_syscalls.c:1162
#9 sys_open+0x59 sys/kern/vfs_syscalls.c:1064
#10 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#11 Xsyscall+0x128
Process 11142 (syz-executor) thread 0xffff8000fffef240 (20742)
exclusive rrwlock inode r = 0 (0xfffffd8069f99b30)
#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 vget+0x2a2 sys/kern/vfs_subr.c:686
#6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203
#8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x963 sys/kern/vfs_lookup.c:580
#11 namei+0x7c5 sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1806
#13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806d1c7e98)
#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 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1806
#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{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11062 12094K 12344K 166960K 12752 0
pcb 17 13K 13K 166960K 103 0
rtable 187 8K 9K 166960K 646 0
pf 39 18K 25K 166960K 136 0
ifaddr 35 5K 7K 166960K 94 0
ifgroup 51 2K 2K 166960K 119 0
sysctl 4 1K 9K 166960K 11 0
counters 72 37K 37K 166960K 124 0
ioctlops 0 0K 4K 166960K 1578 0
iov 0 0K 16K 166960K 57 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1411 89K 89K 166960K 1935 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 8 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 33 0
dirhash 12 2K 2K 166960K 15 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 18 65K 93K 166960K 677 0
sigio 0 0K 0K 166960K 2 0
proc 81 147K 196K 166960K 827 0
subproc 72 4K 4K 166960K 144 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 29 0
in_multi 62 4K 7K 166960K 194 0
ether_multi 1 0K 0K 166960K 2 0
mrt 0 0K 0K 166960K 18 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 533 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 239 153K 165K 166960K 7689 0
UVM aobj 12 2K 2K 166960K 13 0
pinsyscall 43 86K 108K 166960K 2066 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 18 0
NDP 13 0K 2K 166960K 63 0
temp 44 9120K 9179K 166960K 19967 0
kqueue 14 22K 32K 166960K 108 0
SYN cache 2 16K 16K 166960K 2 0
ddb{1}> 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 70 0 67 1 0 1 1 0 8 0
rtentry 176 205 0 130 6 1 5 6 0 8 0
unpcb 144 346 0 325 5 4 1 4 0 8 0
syncache 336 10 0 10 1 1 0 1 0 8 0
tcpcb 736 262 0 257 7 6 1 7 0 8 0
arp 136 34 0 22 1 0 1 1 0 8 0
inpcb 328 763 0 753 11 4 7 7 0 8 6
nd6 152 50 0 37 2 1 1 2 0 8 0
pkpcb 40 4 0 4 1 0 1 1 0 8 1
kcovpl 48 16 0 8 1 0 1 1 0 8 0
ppxss 1192 16 0 13 2 1 1 1 0 8 0
pppxif 1576 1 0 1 1 0 1 1 0 8 1
pfstscr 40 2 0 2 2 1 1 1 0 8 1
pffrag 232 7 0 1 1 0 1 1 0 482 0
pffrnode 88 7 0 1 1 0 1 1 0 8 0
pffrent 40 14 0 8 1 0 1 1 0 8 0
pfosfp 40 1428 0 1428 5 4 1 5 0 8 1
pfosfpen 112 1428 0 1428 21 4 17 21 0 8 17
pfrktable 1344 4 0 1 1 0 1 1 0 8 0
pfanchor 1288 12 0 1 1 0 1 1 0 8 0
pftag 88 1 0 0 1 0 1 1 0 8 0
pfstitem 24 51 0 12 1 0 1 1 0 8 0
pfstkey 128 53 0 14 2 0 2 2 0 8 0
pfstate 448 52 0 14 6 0 6 6 0 8 0
pfrule 1360 26 0 19 2 1 1 2 0 8 0
rttmr 136 3 0 3 2 1 1 1 0 8 1
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 880 0 541 29 3 26 29 0 8 3
art_table 40 881 0 541 5 0 5 5 0 8 1
art_node 32 205 0 136 1 0 1 1 0 8 0
sysvmsgpl 40 2 0 1 2 1 1 1 0 8 0
semupl 112 4 0 4 1 0 1 1 0 8 1
semapl 72 30 0 20 1 0 1 1 0 8 0
shmpl 112 10 0 1 1 0 1 1 0 8 0
dirhash 1024 19 0 2 3 0 3 3 0 8 0
dino2pl 256 2313 0 839 93 0 93 93 0 8 0
ffsino 296 2313 0 839 114 0 114 114 0 8 0
nchpl 144 3153 0 1427 64 0 64 64 0 8 0
rtmask 32 4 0 3 2 1 1 1 0 8 0
vnodes 216 2879 0 0 160 0 160 160 0 8 0
namei 1024 11577 0 11576 1 0 1 1 0 8 0
percpumem 16 77 0 26 1 0 1 1 0 8 0
pfiaddrpl 120 1 0 0 1 0 1 1 0 8 0
kstatmem 264 67 0 40 3 1 2 3 0 8 0
scxspl 216 12718 0 12717 11 9 2 8 1 8 1
plimitpl 152 108 0 91 1 0 1 1 0 8 0
sigapl 424 1007 0 939 9 1 8 8 0 8 0
knotepl 120 313 0 0 10 0 10 10 0 8 0
kqueuepl 224 151 0 140 2 0 2 2 0 8 1
pipepl 344 180 0 153 3 0 3 3 0 8 0
fdescpl 528 971 0 939 3 0 3 3 0 8 0
filepl 160 5020 0 4794 19 7 12 19 0 8 2
lockfpl 104 445 0 441 2 1 1 2 0 8 0
lockfspl 48 169 0 165 1 0 1 1 0 8 0
sessionpl 144 87 0 78 1 0 1 1 0 8 0
pgrppl 48 108 0 91 1 0 1 1 0 8 0
ucredpl 104 528 0 513 1 0 1 1 0 8 0
zombiepl 144 939 0 939 1 0 1 1 0 8 1
processpl 1232 1007 0 939 6 0 6 6 0 8 0
procpl 664 1749 0 1672 8 0 8 8 0 8 1
sosppl 176 4 0 4 2 1 1 1 0 8 1
sockpl 752 1255 0 1221 20 9 11 17 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 1 0 0 1 0 1 1 0 8 0
mcl4k 4096 115 0 0 15 0 15 15 0 8 0
mcl2k 2048 28 0 0 4 0 4 4 0 8 0
mtagpl 96 4 0 0 1 0 1 1 0 8 0
mbufpl 256 278 0 0 18 0 18 18 0 8 0
bufpl 280 4302 0 105 300 0 300 300 0 8 0
anonpl 32 7671 0 0 62 0 62 62 0 246 0
amapchunkpl 152 23604 0 23119 28 0 28 28 0 158 8
amappl16 200 2970 0 2935 21 10 11 15 0 8 8
amappl15 192 9 0 9 1 1 0 1 0 8 0
amappl14 184 535 0 533 1 0 1 1 0 8 0
amappl13 176 177 0 165 1 0 1 1 0 8 0
amappl12 168 1260 0 1229 2 0 2 2 0 8 0
amappl11 160 3 0 3 1 1 0 1 0 8 0
amappl10 152 64 0 50 1 0 1 1 0 8 0
amappl9 144 327 0 327 1 1 0 1 0 8 0
amappl8 136 134 0 131 1 0 1 1 0 8 0
amappl7 128 164 0 151 1 0 1 1 0 8 0
amappl6 120 235 0 231 1 0 1 1 0 8 0
amappl5 112 103 0 92 1 0 1 1 0 8 0
amappl4 104 326 0 305 1 0 1 1 0 8 0
amappl3 96 4693 0 4578 4 0 4 4 0 8 0
amappl2 88 619 0 555 2 0 2 2 0 8 0
amappl1 80 13319 0 12707 16 2 14 15 0 8 1
amappl 88 6744 0 6578 5 0 5 5 0 92 0
uvmvnodes 80 118 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 12 0 1 1 0 1 1 0 8 0
uaddrrnd 24 971 0 939 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 971 0 939 1 0 1 1 0 8 0
vmmpekpl 168 9425 0 9384 3 0 3 3 0 8 0
vmmpepl 168 69995 0 68063 100 1 99 99 0 357 12
vmsppl 488 970 0 939 6 1 5 5 0 8 0
rwobjpl 80 21945 0 20850 30 2 28 28 0 8 2
pdppl 4096 1949 0 1878 113 40 73 85 0 8 2
pvpl 32 15004 0 0 122 1 121 121 0 265 0
pmappl 256 970 0 939 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 302 0 53 8 0 8 8 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff83994ff0) 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
__mp_lock(ffffffff83a3dd80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a3dd80) at __mp_lock+0x192 sys/kern/kern_lock.c:173
softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862
Xsofttty() at Xsofttty+0x27
__mp_lock(ffffffff83a3dd80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a3dd80) at __mp_lock+0x192 sys/kern/kern_lock.c:173
intr_handler(ffff80002a2f63a0,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__mp_lock(ffffffff83a3dd80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a3dd80) at __mp_lock+0x192 sys/kern/kern_lock.c:173
softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
end of kernel
end trace frame: 0x77dc61098220, count: 1
ddb{0}> trace
x86_ipi_db(ffffffff83994ff0) 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
__mp_lock(ffffffff83a3dd80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a3dd80) at __mp_lock+0x192 sys/kern/kern_lock.c:173
softintr_dispatch(2) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(2) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862
Xsofttty() at Xsofttty+0x27
__mp_lock(ffffffff83a3dd80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a3dd80) at __mp_lock+0x192 sys/kern/kern_lock.c:173
intr_handler(ffff80002a2f63a0,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__mp_lock(ffffffff83a3dd80) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a3dd80) at __mp_lock+0x192 sys/kern/kern_lock.c:173
softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
end of kernel
end trace frame: 0x77dc61098220, count: -14
ddb{0}> machine ddbcpu 1
Stopped at savectx+0xae: movl $0,%gs:0x688
savectx() at savectx+0xae
end of kernel
end trace frame: 0x761d346e1970, count: 14
ddb{1}> trace
savectx() at savectx+0xae
end of kernel
end trace frame: 0x761d346e1970, count: -1