panic: missing alias
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
270574 35649 0 0 0 0 syz-executor
*297089 96194 0 0x2 0 1 syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff833e0ea3) at panic+0x1e5 sys/kern/subr_prf.c:198
vgonel(fffffd8066a3b6e0,ffff8000fffefca0) at vgonel+0x663
vrecycle(fffffd8066a3b6e0,ffff8000fffefca0) at vrecycle+0x7c sys/kern/vfs_subr.c:1136
ufs_inactive(ffff80002a340860) at ufs_inactive+0x35c sys/ufs/ufs/ufs_inode.c:107
VOP_INACTIVE(fffffd8066a3b6e0,ffff8000fffefca0) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498
vput(fffffd8066a3b6e0) at vput+0xe5 sys/kern/vfs_subr.c:789
VOP_REMOVE(fffffd805d113d98,fffffd8066a3b6e0,ffff80002a3409c8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336
dounlinkat(ffff8000fffefca0,ffffff9c,7dcb19613bf0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923
syscall(ffff80002a340b40) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a340b40) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7dcb196140a0, count: 4
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}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: missing alias
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff833e0ea3) at panic+0x1e5 sys/kern/subr_prf.c:198
vgonel(fffffd8066a3b6e0,ffff8000fffefca0) at vgonel+0x663
vrecycle(fffffd8066a3b6e0,ffff8000fffefca0) at vrecycle+0x7c sys/kern/vfs_subr.c:1136
ufs_inactive(ffff80002a340860) at ufs_inactive+0x35c sys/ufs/ufs/ufs_inode.c:107
VOP_INACTIVE(fffffd8066a3b6e0,ffff8000fffefca0) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498
vput(fffffd8066a3b6e0) at vput+0xe5 sys/kern/vfs_subr.c:789
VOP_REMOVE(fffffd805d113d98,fffffd8066a3b6e0,ffff80002a3409c8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336
dounlinkat(ffff8000fffefca0,ffffff9c,7dcb19613bf0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923
syscall(ffff80002a340b40) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a340b40) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7dcb196140a0, count: -11
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff80002a340690
rbx 0xffff8000299bee07
rdx 0
rcx 0xffff8000fffefca0
rax 0xffff8000299bdff0
r8 0x101010101010101
r9 0x8080808080808080
r10 0xc7dd2b5f0667f188
r11 0x3c047b5976ad26a5
r12 0xffff8000299bec08
r13 0
r14 0
r15 0x1
rip 0xffffffff82a44f75 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80002a340680
ss 0
db_enter+0x25: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor) tid=297089 pid=96194 tcnt=1 stat=onproc
flags process=2<EXEC> proc=0
runpri=17, usrpri=50, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff8000ffffd4c8,0xffff8000fffef780
process=0xffff8000ffff4e78 user=0xffff80002a33b000, vmspace=0xfffffd800b063d58
estcpu=36, cpticks=133, pctcpu=0.83, user=0, sys=132, intr=1
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
31760 92333 13958 0 2 0 syz-executor
67472 103406 89984 0 2 0 syz-executor
67472 269490 89984 0 3 0x4000080 fsleep syz-executor
48904 314974 41737 0 2 0 syz-executor
48904 105803 41737 0 3 0x4000080 fsleep syz-executor
35649 270574 63276 0 7 0 syz-executor
35649 40150 63276 0 3 0x4000080 fsleep syz-executor
35649 198603 63276 0 2 0x4000000 syz-executor
19510 70079 60529 0 2 0 syz-executor
19510 56843 60529 0 3 0x4000080 ttyout syz-executor
19510 475226 60529 0 2 0x4000000 syz-executor
84459 245667 34713 0 2 0 syz-executor
84459 105533 34713 0 3 0x4000080 fifor syz-executor
84459 86423 34713 0 3 0x4000080 fsleep syz-executor
84459 389434 34713 0 3 0x4000080 fsleep syz-executor
19539 159966 51634 0 3 0x3000 suspend syz-executor
19539 238828 51634 0 3 0x4081000 biowait syz-executor
19539 428427 51634 0 3 0x4081000 inode syz-executor
19539 320402 51634 0 3 0x4081000 inode syz-executor
19539 454191 51634 0 3 0x4081000 inode syz-executor
55860 222776 0 0 3 0x14200 acct acct
34713 136589 71925 0 3 0x82 nanoslp syz-executor
60529 364064 71925 0 3 0x82 nanoslp syz-executor
41737 130675 71925 0 3 0x82 nanoslp syz-executor
*96194 297089 71925 0 7 0x2 syz-executor
63276 85139 71925 0 3 0x82 nanoslp syz-executor
89984 216869 71925 0 3 0x82 nanoslp syz-executor
13958 288981 71925 0 3 0x82 nanoslp syz-executor
51634 274693 71925 0 3 0x82 nanoslp syz-executor
71925 267964 33788 0 3 0x82 kqread syz-executor
33788 105492 10268 0 3 0x10008a sigsusp ksh
10268 323402 41973 0 3 0x98 kqread sshd-session
41973 414024 43550 0 3 0x92 kqread sshd-session
24504 136922 1 0 3 0x100083 ttyin getty
43550 131770 1 0 3 0x88 kqread sshd
48639 84633 34632 74 3 0x1100092 bpf pflogd
34632 201476 1 0 3 0x80 sbwait pflogd
97896 291922 86808 73 3 0x1100090 kqread syslogd
86808 298307 1 0 3 0x100082 sbwait syslogd
14460 38827 1 0 3 0x100080 kqread resolvd
39211 368345 5646 77 3 0x100092 kqread dhcpleased
49256 30056 5646 77 3 0x100092 kqread dhcpleased
5646 360113 1 0 3 0x80 kqread dhcpleased
24164 413322 0 0 3 0x14200 bored smr
17119 521722 0 0 2 0x14200 zerothread
1302 382279 0 0 3 0x14200 aiodoned aiodoned
43786 371215 0 0 3 0x14200 syncer update
28889 78678 0 0 3 0x14200 cleaner cleaner
65245 106152 0 0 3 0x14200 reaper reaper
64324 255599 0 0 3 0x14200 pgdaemon pagedaemon
58174 51788 0 0 3 0x14200 bored viomb
87863 63354 0 0 3 0x40014200 acpi0 acpi0
65522 455012 0 0 3 0x40014200 idle1
36828 381971 0 0 3 0x14200 bored softnet1
29059 186718 0 0 3 0x14200 bored softnet0
43726 387215 0 0 3 0x14200 bored systqmp
9347 41064 0 0 3 0x14200 bored systq
70044 195084 0 0 3 0x14200 tmoslp softclockmp
46413 510811 0 0 3 0x40014200 tmoslp softclock
89309 400464 0 0 3 0x40014200 idle0
1 188525 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 35649 (syz-executor) thread 0xffff800030fada10 (198603)
exclusive rwlock vmmaplk r = 0 (0xfffffd806f40fc78)
#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_read+0x3e8 sys/kern/kern_rwlock.c:413
#2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880
#3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693
#4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627
#5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
#6 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
#7 recall_trap+0x8
Process 19539 (syz-executor) thread 0xffff8000fffee548 (238828)
exclusive rrwlock inode r = 0 (0xfffffd8064568690)
#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 ufs_link+0x83 sys/ufs/ufs/ufs_vnops.c:619
#6 VOP_LINK+0xf5 sys/kern/vfs_vops.c:355
#7 dolinkat+0x30c sys/kern/vfs_syscalls.c:1779
#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
exclusive rrwlock inode r = 0 (0xfffffd8064568318)
#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+0x11c sys/kern/vfs_lookup.c:-1
#6 namei+0x7ca sys/kern/vfs_lookup.c:250
#7 dolinkat+0x1aa sys/kern/vfs_syscalls.c:1758
#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
Process 96194 (syz-executor) thread 0xffff8000fffefca0 (297089)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83987840)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1
#2 sleep_finish+0x2d8 sys/kern/kern_synch.c:369
#3 getblk+0x197 sys/kern/vfs_bio.c:1013
#4 bread+0x45 bio_doread sys/kern/vfs_bio.c:418 [inline]
#4 bread+0x45 sys/kern/vfs_bio.c:463
#5 ffs_update+0x198 sys/ufs/ffs/ffs_inode.c:91
#6 ufs_reclaim+0x10f sys/ufs/ufs/ufs_inode.c:137
#7 ffs_reclaim+0x43 sys/ufs/ffs/ffs_vnops.c:519
#8 VOP_RECLAIM+0x77 sys/kern/vfs_vops.c:512
#9 vclean+0x322 sys/kern/vfs_subr.c:1095
#10 vgonel+0xb0 sys/kern/vfs_subr.c:1185
#11 vrecycle+0x7c sys/kern/vfs_subr.c:1136
#12 ufs_inactive+0x35c sys/ufs/ufs/ufs_inode.c:107
#13 VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498
#14 vput+0xe5 sys/kern/vfs_subr.c:789
#15 VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336
#16 dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923
#17 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#17 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#18 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8064568c58)
#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 cache_lookup+0x351 sys/kern/vfs_cache.c:222
#7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160
#8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#9 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567
#10 namei+0x7ca sys/kern/vfs_lookup.c:250
#11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887
#12 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#12 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#13 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11063 12106K 12275K 166960K 12388 0
pcb 17 14K 16K 166960K 128 0
rtable 232 8K 8K 166960K 395 0
pf 35 17K 18K 166960K 52 0
ifaddr 42 7K 7K 166960K 48 0
ifgroup 55 2K 2K 166960K 61 0
sysctl 3 1K 9K 166960K 9 0
counters 70 37K 37K 166960K 82 0
ioctlops 0 0K 4K 166960K 1590 0
iov 0 0K 12K 166960K 5 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1297 82K 82K 166960K 1598 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 5 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 16 0
dirhash 12 2K 2K 166960K 18 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 17 61K 106K 166960K 353 0
sigio 0 0K 0K 166960K 1 0
proc 72 115K 147K 166960K 574 0
subproc 72 4K 4K 166960K 72 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 41 0
in_multi 96 7K 7K 166960K 104 0
ether_multi 1 0K 0K 166960K 2 0
mrt 0 0K 0K 166960K 21 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 61 281K 281K 166960K 61 0
exec 0 0K 1K 166960K 394 0
fusefs mount 1 32K 32K 166960K 1 0
pfkey data 0 0K 0K 166960K 2 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 233 167K 178K 166960K 5080 0
UVM aobj 7 2K 2K 166960K 7 0
pinsyscall 42 84K 102K 166960K 1483 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 12 0
NDP 12 0K 2K 166960K 31 0
temp 45 9071K 9138K 166960K 17986 0
kqueue 13 20K 29K 166960K 61 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 56 0 53 1 0 1 1 0 8 0
rtentry 176 119 0 17 6 0 6 6 0 8 0
unpcb 144 231 0 209 4 0 4 4 0 8 2
syncache 336 5 0 5 2 1 1 1 0 8 1
tcpcb 736 201 0 197 7 0 7 7 0 8 6
arp 136 20 0 1 1 0 1 1 0 8 0
inpcb 328 483 0 474 10 1 9 9 0 8 8
nd6 152 26 0 0 1 0 1 1 0 8 0
pkpcb 40 3 0 3 1 0 1 1 0 8 1
kcovpl 48 8 0 0 1 0 1 1 0 8 0
ppxss 1192 6 0 6 2 1 1 1 0 8 1
pffrag 232 3 0 2 1 0 1 1 0 482 0
pffrnode 88 3 0 2 1 0 1 1 0 8 0
pffrent 40 5 0 4 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
pfstitem 24 34 0 1 1 0 1 1 0 8 0
pfstkey 128 34 0 1 2 0 2 2 0 8 0
pfstate 448 34 0 1 4 0 4 4 0 8 0
pfrule 1360 21 0 16 2 1 1 2 0 8 0
rttmr 136 2 0 2 1 0 1 1 0 8 1
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 493 0 74 29 0 29 29 0 8 1
art_table 40 494 0 74 5 0 5 5 0 8 0
art_node 32 119 0 27 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 14 0 4 1 0 1 1 0 8 0
shmpl 112 4 0 0 1 0 1 1 0 8 0
dirhash 1024 21 0 4 3 0 3 3 0 8 0
dino2pl 256 2016 0 545 93 0 93 93 0 8 0
ffsino 296 2016 0 545 114 0 114 114 0 8 0
nchpl 144 2521 0 818 64 0 64 64 0 8 0
rtmask 32 3 0 3 1 0 1 1 0 8 1
vnodes 216 2190 0 0 122 0 122 122 0 8 0
namei 1024 8010 0 8004 4 2 2 2 0 8 1
percpumem 16 56 0 6 1 0 1 1 0 8 0
kstatmem 264 32 0 6 2 0 2 2 0 8 0
scsiplug 72 1 0 1 1 0 1 1 0 8 1
scxspl 216 10901 0 10900 4 3 1 3 1 8 0
plimitpl 152 64 0 46 1 0 1 1 0 8 0
sigapl 424 659 0 611 7 1 6 7 0 8 0
knotepl 120 549 0 0 17 0 17 17 0 8 0
kqueuepl 224 134 0 125 5 0 5 5 0 8 4
pipepl 344 139 0 112 3 0 3 3 0 8 0
fdescpl 528 642 0 611 3 0 3 3 0 8 0
filepl 160 3528 0 3301 14 0 14 14 0 8 2
lockfpl 104 81 0 78 1 0 1 1 0 8 0
lockfspl 48 39 0 36 1 0 1 1 0 8 0
sessionpl 144 27 0 18 1 0 1 1 0 8 0
pgrppl 48 37 0 20 1 0 1 1 0 8 0
ucredpl 104 596 0 582 1 0 1 1 0 8 0
zombiepl 144 708 0 707 2 1 1 1 0 8 0
processpl 1232 659 0 611 5 0 5 5 0 8 0
procpl 664 1067 0 1004 6 0 6 6 0 8 0
sockpl 752 778 0 744 13 2 11 13 0 8 6
mcl64k 65536 6 0 0 1 0 1 1 0 8 0
mcl16k 16384 5 0 0 1 0 1 1 0 8 0
mcl8k 8192 3 0 0 1 0 1 1 0 8 0
mcl4k 4096 127 0 0 16 0 16 16 0 8 0
mcl2k 2048 73 0 0 10 0 10 10 0 8 0
mtagpl 96 5 0 0 1 0 1 1 0 8 0
mbufpl 256 285 0 0 18 0 18 18 0 8 0
bufpl 280 5853 0 105 411 0 411 411 0 8 0
anonpl 32 7593 0 0 62 0 62 62 0 246 0
amapchunkpl 152 27535 0 27060 40 3 37 37 0 158 11
amappl16 200 2914 0 2648 27 12 15 15 0 8 0
amappl15 192 3 0 3 1 1 0 1 0 8 0
amappl14 184 434 0 433 1 0 1 1 0 8 0
amappl13 176 150 0 138 1 0 1 1 0 8 0
amappl12 168 928 0 899 2 0 2 2 0 8 0
amappl11 160 7 0 7 1 1 0 1 0 8 0
amappl10 152 69 0 53 1 0 1 1 0 8 0
amappl9 144 283 0 283 1 1 0 1 0 8 0
amappl8 136 100 0 98 1 0 1 1 0 8 0
amappl7 128 144 0 131 1 0 1 1 0 8 0
amappl6 120 174 0 173 1 0 1 1 0 8 0
amappl5 112 90 0 79 1 0 1 1 0 8 0
amappl4 104 324 0 303 1 0 1 1 0 8 0
amappl3 96 2912 0 2805 4 0 4 4 0 8 0
amappl2 88 516 0 454 2 0 2 2 0 8 0
amappl1 80 10243 0 9637 15 2 13 15 0 8 0
amappl 88 4337 0 4177 5 0 5 5 0 92 0
uvmvnodes 80 107 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 6 0 0 1 0 1 1 0 8 0
uaddrrnd 24 642 0 611 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 642 0 611 1 0 1 1 0 8 0
vmmpekpl 168 6988 0 6954 3 0 3 3 0 8 1
vmmpepl 168 49218 0 47045 99 1 98 98 0 357 1
vmsppl 488 641 0 611 5 1 4 5 0 8 0
rwobjpl 80 17003 0 15720 27 0 27 27 0 8 0
pdppl 4096 1291 0 1222 101 30 71 83 0 8 2
pvpl 32 14067 0 0 114 0 114 114 0 265 0
pmappl 256 641 0 611 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 299 0 36 8 0 8 8 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff838abff0) 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(ffffffff83987040) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83987040) at __mp_lock+0x192 sys/kern/kern_lock.c:173
intr_handler(ffff8000333bd540,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
end of kernel
end trace frame: 0x7ac9147d0e60, count: 9
ddb{0}> trace
x86_ipi_db(ffffffff838abff0) 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(ffffffff83987040) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83987040) at __mp_lock+0x192 sys/kern/kern_lock.c:173
intr_handler(ffff8000333bd540,ffff8000002a3480) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
end of kernel
end trace frame: 0x7ac9147d0e60, count: -6
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x25: addq $0x8,%rsp
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff833e0ea3) at panic+0x1e5 sys/kern/subr_prf.c:198
vgonel(fffffd8066a3b6e0,ffff8000fffefca0) at vgonel+0x663
vrecycle(fffffd8066a3b6e0,ffff8000fffefca0) at vrecycle+0x7c sys/kern/vfs_subr.c:1136
ufs_inactive(ffff80002a340860) at ufs_inactive+0x35c sys/ufs/ufs/ufs_inode.c:107
VOP_INACTIVE(fffffd8066a3b6e0,ffff8000fffefca0) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498
vput(fffffd8066a3b6e0) at vput+0xe5 sys/kern/vfs_subr.c:789
VOP_REMOVE(fffffd805d113d98,fffffd8066a3b6e0,ffff80002a3409c8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336
dounlinkat(ffff8000fffefca0,ffffff9c,7dcb19613bf0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923
syscall(ffff80002a340b40) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a340b40) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7dcb196140a0, count: 4
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff833e0ea3) at panic+0x1e5 sys/kern/subr_prf.c:198
vgonel(fffffd8066a3b6e0,ffff8000fffefca0) at vgonel+0x663
vrecycle(fffffd8066a3b6e0,ffff8000fffefca0) at vrecycle+0x7c sys/kern/vfs_subr.c:1136
ufs_inactive(ffff80002a340860) at ufs_inactive+0x35c sys/ufs/ufs/ufs_inode.c:107
VOP_INACTIVE(fffffd8066a3b6e0,ffff8000fffefca0) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498
vput(fffffd8066a3b6e0) at vput+0xe5 sys/kern/vfs_subr.c:789
VOP_REMOVE(fffffd805d113d98,fffffd8066a3b6e0,ffff80002a3409c8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336
dounlinkat(ffff8000fffefca0,ffffff9c,7dcb19613bf0,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923
syscall(ffff80002a340b40) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a340b40) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7dcb196140a0, count: -11