panic: vpoapn_igc:e kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_fork.c", line 678
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*237802 16640 32767 0x10 0 1 syz-executor.1
254066 82458 32767 0x10 0x4000000 0 syz-executor.0
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8259fa58) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff82613588,ffffffff825db93f,2a6,ffffffff825d06bf) at __assert+0x25 sys/kern/subr_prf.c:161
proc_trampoline_mp() at proc_trampoline_mp+0x131
end trace frame: 0x0, count: 11
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
*cpu0: vop_generic_badop
cpu1: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_fork.c", line 678
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8259fa58) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff82613588,ffffffff825db93f,2a6,ffffffff825d06bf) at __assert+0x25 sys/kern/subr_prf.c:161
proc_trampoline_mp() at proc_trampoline_mp+0x131
end trace frame: 0x0, count: -4
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff80002e39ff20
rbx 0xffff800020cd9c5f
rdx 0
rcx 0
rax 0xffff80002348b268
r8 0x101010101010101
r9 0x8080808080808080
r10 0x4258776180bf55f
r11 0x85a5bb80f396418c
r12 0xffff800020cd9a60
r13 0
r14 0xffffffff82925a60 cpu_info_full_primary+0x2a60
r15 0x1
rip 0xffffffff821e5418 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80002e39ff10
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.1) pid=237802 stat=onproc
flags process=10<SUGID> proc=0
pri=81, usrpri=81, nice=20
forw=0xffffffffffffffff, list=0xffff80002348b508,0xffffffff82a1a490
process=0xffff8000fffe8440 user=0xffff80002e39b000, vmspace=0xfffffd806c7505d0
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
*16640 237802 82451 32767 7 0x10 syz-executor.1
82458 365858 95918 32767 2 0x10 syz-executor.0
82458 254066 95918 32767 7 0x4000010 syz-executor.0
84765 462970 35169 32767 2 0x10 syz-executor.5
84765 126831 35169 32767 2 0x4000010 syz-executor.5
75300 378536 11716 32767 2 0x10 syz-executor.7
75300 216141 11716 32767 3 0x4000090 netcon syz-executor.7
75300 479757 11716 32767 3 0x4000090 fsleep syz-executor.7
11716 38890 35891 32767 3 0x90 nanoslp syz-executor.7
35891 361435 97485 0 3 0x82 wait syz-executor.7
82451 413840 68398 32767 2 0x10 syz-executor.1
68398 23007 97485 0 3 0x82 wait syz-executor.1
83444 384242 0 0 3 0x14200 bored sosplice
81001 419567 27501 32767 3 0x90 nanoslp syz-executor.6
27501 169790 97485 0 3 0x82 wait syz-executor.6
80287 178442 19185 32767 3 0x10 biowait syz-executor.4
19185 242752 97485 0 3 0x82 wait syz-executor.4
35169 108259 23213 32767 3 0x90 nanoslp syz-executor.5
23213 105726 97485 0 3 0x82 wait syz-executor.5
83651 382424 90272 32767 2 0x10 syz-executor.3
83266 41091 82090 32767 3 0x10 biowait syz-executor.2
82090 391103 97485 0 3 0x82 wait syz-executor.2
90272 274592 97485 0 3 0x82 wait syz-executor.3
95918 81328 96714 32767 3 0x90 nanoslp syz-executor.0
96714 177330 97485 0 3 0x82 wait syz-executor.0
97485 222653 53476 0 3 0x82 thrsleep syz-fuzzer
97485 425117 53476 0 3 0x4000082 nanoslp syz-fuzzer
97485 109153 53476 0 3 0x4000082 thrsleep syz-fuzzer
97485 461617 53476 0 3 0x4000082 thrsleep syz-fuzzer
97485 313543 53476 0 3 0x4000082 thrsleep syz-fuzzer
97485 343126 53476 0 3 0x4000082 kqread syz-fuzzer
97485 203667 53476 0 3 0x4000082 nanoslp syz-fuzzer
97485 332602 53476 0 3 0x4000082 thrsleep syz-fuzzer
97485 214078 53476 0 3 0x4000082 thrsleep syz-fuzzer
53476 155985 35379 0 3 0x10008a sigsusp ksh
35379 60363 29821 0 3 0x9a kqread sshd
98314 270631 1 0 3 0x100083 ttyin getty
29821 192765 1 0 3 0x88 kqread sshd
55257 246493 65947 73 3 0x1100090 kqread syslogd
65947 513918 1 0 3 0x100082 netio syslogd
6339 51001 1 0 3 0x100080 kqread resolvd
19359 152612 58539 77 3 0x100092 kqread dhcpleased
90900 327264 58539 77 3 0x100092 kqread dhcpleased
58539 518740 1 0 3 0x80 kqread dhcpleased
83670 185747 0 0 3 0x14200 bored smr
86994 134458 0 0 2 0x14200 zerothread
93217 356355 0 0 3 0x14200 aiodoned aiodoned
76653 217795 0 0 3 0x14200 syncer update
81501 175758 0 0 3 0x14200 cleaner cleaner
90069 336427 0 0 3 0x14200 reaper reaper
11514 260493 0 0 3 0x14200 pgdaemon pagedaemon
71348 140953 0 0 3 0x14200 bored viomb
24460 507352 0 0 3 0x40014200 acpi0 acpi0
58181 328998 0 0 3 0x40014200 idle1
42566 157927 0 0 3 0x14200 bored softnet
77921 156167 0 0 3 0x14200 bored softnet
69003 235245 0 0 3 0x14200 bored softnet
88401 332825 0 0 3 0x14200 bored softnet
60687 221072 0 0 3 0x14200 bored systqmp
57765 312703 0 0 3 0x14200 bored systq
56281 143655 0 0 3 0x40014200 bored softclock
72817 173234 0 0 3 0x40014200 idle0
1 500471 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 82458 (syz-executor.0) thread 0xffff80002348a008 (254066)
exclusive rrwlock inode r = 0 (0xfffffd8068d961a8)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:579
#5 vget+0x1d3 sys/kern/vfs_subr.c:678
#6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318
#8 ufs_lookup+0x122c sys/ufs/ufs/ufs_lookup.c:582
#9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561
#11 namei+0x36a sys/kern/vfs_lookup.c:245
#12 dofaccessat+0x158 sys/kern/vfs_syscalls.c:2013
#13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#14 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82b79c40)
#0 witness_lock+0x44d
#1 syscall+0x3ef mi_syscall sys/sys/syscall_mi.h:93 [inline]
#1 syscall+0x3ef sys/arch/amd64/amd64/trap.c:585
#2 Xsyscall+0x128
Process 80287 (syz-executor.4) thread 0xffff80002348ad28 (178442)
exclusive rrwlock inode r = 0 (0xfffffd80674cf0a8)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140
#5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347
#6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394
#7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162
#8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404
#9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3116
#10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd80640c7810)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:579
#5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413
#6 namei+0x36a sys/kern/vfs_lookup.c:245
#7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3101
#8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#9 Xsyscall+0x128
Process 83651 (syz-executor.3) thread 0xffff80002348aa88 (382424)
exclusive rrwlock inode r = 0 (0xfffffd8068d96c48)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:579
#5 vget+0x1d3 sys/kern/vfs_subr.c:678
#6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1318
#8 ufs_lookup+0x13ba sys/ufs/ufs/ufs_lookup.c:487
#9 VOP_LOOKUP+0x58 sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:561
#11 namei+0x36a sys/kern/vfs_lookup.c:245
#12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1852
#13 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#13 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806c8234d8)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:579
#5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413
#6 namei+0x36a sys/kern/vfs_lookup.c:245
#7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1852
#8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#9 Xsyscall+0x128
Process 83266 (syz-executor.2) thread 0xffff80002348b7a8 (41091)
exclusive rrwlock inode r = 0 (0xfffffd80674cf708)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140
#5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347
#6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394
#7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162
#8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404
#9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3116
#10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806c823098)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:579
#5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413
#6 namei+0x36a sys/kern/vfs_lookup.c:245
#7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3101
#8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585
#9 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10194 6410K 6420K 78643K 11303 0
pcb 13 16K 18K 78643K 19 0
rtable 234 6K 6K 78643K 844 0
ifaddr 81 17K 17K 78643K 125 0
sysctl 1 1K 1K 78643K 1 0
counters 56 35K 35K 78643K 68 0
ioctlops 0 0K 2K 78643K 120 0
iov 0 0K 16K 78643K 697 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1270 79K 79K 78643K 2207 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 31 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 816 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 22 81K 121K 78643K 3603 0
sigio 0 0K 0K 78643K 67 0
proc 56 78K 127K 78643K 872 0
subproc 104 6K 6K 78643K 182 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 9084 0
in_multi 99 6K 6K 78643K 185 0
ether_multi 1 0K 0K 78643K 3 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 163 731K 731K 78643K 163 0
exec 0 0K 2K 78643K 1666 0
tdb 3 0K 0K 78643K 3 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 7 26K 26K 78643K 7 0
UVM amap 244 84K 97K 78643K 23175 0
UVM aobj 131 4K 4K 78643K 131 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 71 0
NDP 11 0K 2K 78643K 45 0
temp 124 4734K 4798K 78643K 11623 0
kqueue 13 20K 26K 78643K 366 0
SYN cache 2 16K 16K 78643K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 22 0 0 1 0 1 1 0 8 0
rtpcb 120 355 0 352 6 5 1 3 0 8 0
rtentry 112 182 0 72 4 0 4 4 0 8 0
unpcb 136 2198 0 2183 21 18 3 5 0 8 2
syncache 296 42 0 42 8 7 1 1 0 8 1
tcpqe 32 88 0 88 4 3 1 1 0 8 1
tcpcb 736 3377 0 3350 76 67 9 21 0 8 4
arp 120 31 0 13 1 0 1 1 0 8 0
inpcb 312 4970 0 4955 53 43 10 17 0 8 8
ip6q 72 2 0 2 1 1 0 1 0 8 0
ip6af 40 6 0 6 1 1 0 1 0 8 0
nd6 48 46 0 22 1 0 1 1 0 8 0
kcovpl 48 14 0 6 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 759 0 303 31 2 29 30 0 8 0
art_table 32 760 0 303 4 0 4 4 0 8 0
art_node 16 181 0 81 1 0 1 1 0 8 0
sysvmsgpl 40 24 0 5 1 0 1 1 0 8 0
semupl 112 2 0 2 1 1 0 1 0 8 0
semapl 112 809 0 799 1 0 1 1 0 8 0
shmpl 112 128 0 0 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 6310 0 4868 91 0 91 91 0 8 0
ffsino 272 6310 0 4868 97 0 97 97 0 8 0
nchpl 144 11431 0 9790 63 0 63 63 0 8 0
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
vnodes 224 5926 0 0 349 0 349 349 0 8 0
namei 1024 41182 0 41179 3 2 1 2 0 8 0
percpumem 16 46 0 6 1 0 1 1 0 8 0
kstatmem 264 34 0 12 2 0 2 2 0 8 0
scxspl 216 30401 0 30399 20 18 2 8 0 8 1
plimitpl 152 618 0 596 1 0 1 1 0 8 0
sigapl 424 3869 0 3817 7 0 7 7 0 8 0
futexpl 64 35071 0 35070 1 0 1 1 0 8 0
knotepl 120 346 0 0 10 0 10 10 0 8 0
kqueuepl 216 1003 0 994 17 12 5 5 0 8 4
pipepl 336 1035 0 1007 36 28 8 13 0 8 5
fdescpl 496 3851 0 3818 7 2 5 6 0 8 0
filepl 152 27663 0 27422 49 34 15 19 0 8 5
lockfpl 104 568 0 566 2 1 1 2 0 8 0
lockfspl 48 199 0 197 1 0 1 1 0 8 0
sessionpl 144 29 0 13 1 0 1 1 0 8 0
pgrppl 48 317 0 301 1 0 1 1 0 8 0
ucredpl 96 5092 0 5074 1 0 1 1 0 8 0
zombiepl 144 3818 0 3817 1 0 1 1 0 8 0
processpl 1064 3869 0 3817 5 1 4 5 0 8 0
procpl 672 10747 0 10683 8 1 7 8 0 8 0
sosppl 168 68 0 68 8 7 1 1 0 8 1
sockpl 480 7592 0 7559 114 101 13 29 0 8 8
mcl64k 65536 22 0 0 3 0 3 3 0 8 0
mcl16k 16384 16 0 0 2 0 2 2 0 8 0
mcl12k 12288 17 0 0 2 0 2 2 0 8 0
mcl9k 9216 21 0 0 2 0 2 2 0 8 0
mcl8k 8192 18 0 0 3 1 2 3 0 8 0
mcl4k 4096 13 0 0 2 0 2 2 0 8 0
mcl2k2 2112 8 0 0 1 0 1 1 0 8 0
mcl2k 2048 176 0 0 18 2 16 18 0 8 1
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 492 0 0 31 0 31 31 0 8 0
bufpl 288 8665 0 2335 453 0 453 453 0 8 0
anonpl 24 785751 0 773566 145 53 92 104 0 186 3
amapchunkpl 152 66954 0 66364 64 33 31 37 0 158 5
amappl16 200 12447 0 12085 84 58 26 33 0 8 6
amappl15 192 3 0 3 2 2 0 1 0 8 0
amappl14 184 12 0 10 1 0 1 1 0 8 0
amappl13 176 883 0 875 1 0 1 1 0 8 0
amappl12 168 501 0 492 1 0 1 1 0 8 0
amappl11 160 89 0 73 1 0 1 1 0 8 0
amappl10 152 1205 0 1196 1 0 1 1 0 8 0
amappl9 144 551 0 546 1 0 1 1 0 8 0
amappl8 136 1694 0 1628 3 0 3 3 0 8 0
amappl7 128 1156 0 1141 1 0 1 1 0 8 0
amappl6 120 274 0 259 2 1 1 2 0 8 0
amappl5 112 4422 0 4402 1 0 1 1 0 8 0
amappl4 104 976 0 953 2 1 1 2 0 8 0
amappl3 96 11978 0 11925 2 0 2 2 0 8 0
amappl2 88 5094 0 5025 3 1 2 3 0 8 0
amappl1 80 92877 0 92232 21 5 16 19 0 8 0
amappl 88 22472 0 22309 5 0 5 5 0 92 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 72 130 0 0 3 0 3 3 0 8 0
uaddrrnd 24 3851 0 3818 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 3851 0 3818 1 0 1 1 0 8 0
vmmpekpl 168 34128 0 34074 3 0 3 3 0 8 0
vmmpepl 168 380770 0 378288 174 42 132 137 0 357 9
vmsppl 368 3850 0 3818 4 0 4 4 0 8 0
rwobjpl 56 102136 0 94774 107 0 107 107 0 8 0
pdppl 4096 7709 0 7636 177 96 81 93 0 8 8
pvpl 32 1542595 0 1525510 280 114 166 240 0 265 10
pmappl 248 3850 0 3818 4 1 3 3 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 1087 0 243 25 0 25 25 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffffffff82924ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x54 kd_curproc sys/dev/kcov.c:578 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x54 sys/dev/kcov.c:148
__mp_lock(ffffffff82b79a38) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b79a38) at __mp_lock+0x133 sys/kern/kern_lock.c:147
intr_handler(ffff800021234130,ffff80000004bd00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f
Xspllower() at Xspllower+0x19
cnputc(65) at cnputc+0x4b sys/dev/cons.c:239
db_putchar(65) at db_putchar+0x3fc sys/ddb/db_output.c:155
kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1068
db_printf(ffffffff826190ef) at db_printf+0x85 sys/kern/subr_prf.c:502
panic(ffffffff82591691) at panic+0xd7 sys/kern/subr_prf.c:220
vop_generic_badop(ffff800021234550) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133
end trace frame: 0xffff8000212345b0, count: 0
ddb{0}> trace
x86_ipi_db(ffffffff82924ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x54 kd_curproc sys/dev/kcov.c:578 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x54 sys/dev/kcov.c:148
__mp_lock(ffffffff82b79a38) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b79a38) at __mp_lock+0x133 sys/kern/kern_lock.c:147
intr_handler(ffff800021234130,ffff80000004bd00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f
Xspllower() at Xspllower+0x19
cnputc(65) at cnputc+0x4b sys/dev/cons.c:239
db_putchar(65) at db_putchar+0x3fc sys/ddb/db_output.c:155
kprintf() at kprintf+0x20ec sys/kern/subr_prf.c:1068
db_printf(ffffffff826190ef) at db_printf+0x85 sys/kern/subr_prf.c:502
panic(ffffffff82591691) at panic+0xd7 sys/kern/subr_prf.c:220
vop_generic_badop(ffff800021234550) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133
VOP_READLINK(fffffd8069696e00,ffff8000212345c0,fffffd807f7d7720) at VOP_READLINK+0xb6 sys/kern/vfs_vops.c:476
namei(ffff800021234668) at namei+0x48a sys/kern/vfs_lookup.c:290
dofaccessat(ffff80002348a008,6,20000100,2,0) at dofaccessat+0x158 sys/kern/vfs_syscalls.c:2013
syscall(ffff800021234870) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021234870) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x39e61dfe290, count: -19
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x18: addq $0x8,%rsp
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8259fa58) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff82613588,ffffffff825db93f,2a6,ffffffff825d06bf) at __assert+0x25 sys/kern/subr_prf.c:161
proc_trampoline_mp() at proc_trampoline_mp+0x131
end trace frame: 0x0, count: 11
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8259fa58) at panic+0x177 sys/kern/subr_prf.c:202
__assert(ffffffff82613588,ffffffff825db93f,2a6,ffffffff825d06bf) at __assert+0x25 sys/kern/subr_prf.c:161
proc_trampoline_mp() at proc_trampoline_mp+0x131
end trace frame: 0x0, count: -4