uvm_fault(0xfffffd806d11e1c8, 0x8, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at fifo_write+0x6e: movq 0x8(%rax),%r15
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*520303 83730 32767 0x10 0x4000000 0K syz-executor
355253 83730 32767 0x10 0x4000000 1 syz-executor
fifo_write(ffff800036fb37b0) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281
VOP_WRITE(fffffd8056518880,ffff800036fb3848,8,fffffd807f7d32d8) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245
vn_rdwr(1,fffffd8056518880,ffff800029fe7800,fc,0,1,f270d2358658ed,ffff800036fb3970,fffffd8056518880,78) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324
ufs_symlink(ffff800036fb3970) at ufs_symlink+0x1ee sys/ufs/ufs/ufs_vnops.c:1309
VOP_SYMLINK(fffffd806b3d1a78,ffff800036fb3af0,ffff800036fb3b20,ffff800036fb3a20,ffff800029fe7800) at VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432
dosymlinkat(ffff8000337959b0,20000500,3,20000c80) at dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806
syscall(ffff800036fb3ca0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff800036fb3ca0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x179cb739610, count: 7
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
*cpu0: uvm_fault(0xfffffd806d11e1c8, 0x8, 0, 1) -> e
ddb{0}> trace
fifo_write(ffff800036fb37b0) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281
VOP_WRITE(fffffd8056518880,ffff800036fb3848,8,fffffd807f7d32d8) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245
vn_rdwr(1,fffffd8056518880,ffff800029fe7800,fc,0,1,f270d2358658ed,ffff800036fb3970,fffffd8056518880,78) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324
ufs_symlink(ffff800036fb3970) at ufs_symlink+0x1ee sys/ufs/ufs/ufs_vnops.c:1309
VOP_SYMLINK(fffffd806b3d1a78,ffff800036fb3af0,ffff800036fb3b20,ffff800036fb3a20,ffff800029fe7800) at VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432
dosymlinkat(ffff8000337959b0,20000500,3,20000c80) at dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806
syscall(ffff800036fb3ca0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff800036fb3ca0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x179cb739610, count: -8
ddb{0}> show registers
rdi 0xfffffd8056518880
rsi 0x1
rbp 0xffff800036fb37a0
rbx 0xfffffd8056518880
rdx 0
rcx 0xffff8000337959b0
rax 0
r8 0
r9 0x1
r10 0xffffffff8341fff0 cpu_info_full_primary+0x1ff0
r11 0xe513b9765a9dc447
r12 0x4000 __ALIGN_SIZE+0x3000
r13 0xffff800036fb3848
r14 0xffff800036fb37b0
r15 0x1
rip 0xffffffff81c0e32e fifo_write+0x6e
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff800036fb3770
ss 0
fifo_write+0x6e: movq 0x8(%rax),%r15
ddb{0}> show proc
PROC (syz-executor) tid=520303 pid=83730 tcnt=4 stat=onproc
flags process=10<SUGID> proc=4000000<THREAD>
runpri=17, usrpri=83, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff800033793c40,0xffff800033794808
process=0xffff8000370556a8 user=0xffff800036fae000, vmspace=0xfffffd806d11e1c8
estcpu=33, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
71148 220733 55234 32767 2 0x10 syz-executor
71148 129856 55234 32767 3 0x4000090 kqread syz-executor
83730 503255 77451 32767 2 0x10 syz-executor
*83730 520303 77451 32767 7 0x4000010 syz-executor
83730 335488 77451 32767 2 0x4000010 syz-executor
83730 355253 77451 32767 7 0x4000010 syz-executor
45250 444937 58851 32767 2 0x10 syz-executor
45250 206851 58851 32767 3 0x4000090 fsleep syz-executor
45250 136547 58851 32767 3 0x4000090 fsleep syz-executor
49199 138577 13166 32767 2 0x10 syz-executor
49199 497452 13166 32767 3 0x4000090 netacc syz-executor
42893 69674 31925 32767 2 0x10 syz-executor
42893 62052 31925 32767 3 0x4000090 fsleep syz-executor
42893 290159 31925 32767 3 0x4000090 fsleep syz-executor
55234 362363 30839 32767 2 0x490 syz-executor
30839 479741 40034 0 3 0x82 wait syz-executor
54353 424200 21394 32767 3 0x90 wait syz-executor
21394 381237 40034 0 3 0x82 wait syz-executor
13166 21761 96277 32767 3 0x90 nanoslp syz-executor
96277 238034 40034 0 3 0x82 wait syz-executor
31925 244741 17408 32767 3 0x90 nanoslp syz-executor
17408 9347 40034 0 3 0x82 wait syz-executor
77451 406980 34778 32767 3 0x90 nanoslp syz-executor
52796 213324 27746 32767 2 0x490 syz-executor
58851 198261 70346 32767 3 0x90 nanoslp syz-executor
96380 25525 17148 32767 2 0x10 syz-executor
27746 274334 40034 0 3 0x82 wait syz-executor
70346 315604 40034 0 3 0x82 wait syz-executor
34778 492274 40034 0 3 0x82 wait syz-executor
17148 332233 40034 0 3 0x82 wait syz-executor
12537 369414 0 0 3 0x14200 bored sosplice
40034 234394 30760 0 3 0x82 kqread syz-executor
30760 148953 76503 0 3 0x10008a sigsusp ksh
76503 144089 78725 0 3 0x98 kqread sshd-session
78725 503768 60871 0 3 0x92 kqread sshd-session
6227 493529 1 0 3 0x100083 ttyin getty
60871 78173 1 0 3 0x88 kqread sshd
52010 188640 57780 73 3 0x1100090 kqread syslogd
57780 448974 1 0 3 0x100082 sbwait syslogd
48493 496724 1 0 3 0x100080 kqread resolvd
48625 296520 13317 77 3 0x100092 kqread dhcpleased
65867 331627 13317 77 3 0x100092 kqread dhcpleased
13317 380860 1 0 3 0x80 kqread dhcpleased
48852 206159 0 0 3 0x14200 bored smr
58900 491167 0 0 2 0x14200 zerothread
81427 123054 0 0 3 0x14200 aiodoned aiodoned
91615 307029 0 0 3 0x14200 syncer update
46662 508365 0 0 3 0x14200 cleaner cleaner
9618 179569 0 0 3 0x14200 reaper reaper
32491 209065 0 0 3 0x14200 pgdaemon pagedaemon
29733 408045 0 0 3 0x14200 bored viomb
91061 115738 0 0 3 0x40014200 acpi0 acpi0
1729 77105 0 0 3 0x40014200 idle1
88809 289673 0 0 3 0x14200 bored softnet3
28220 61590 0 0 3 0x14200 bored softnet2
13244 133534 0 0 3 0x14200 bored softnet1
25537 259802 0 0 3 0x14200 bored softnet0
36409 53540 0 0 3 0x14200 bored systqmp
65268 321958 0 0 3 0x14200 bored systq
47886 433369 0 0 2 0x14200 softclockmp
52160 328367 0 0 2 0x40014200 softclock
58375 257712 0 0 3 0x40014200 idle0
1 201345 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 83730 (syz-executor) thread 0xffff8000337959b0 (520303)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83501b20)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 __mp_acquire_count+0x58
#2 mi_switch+0x658 sys/kern/sched_bsd.c:460
#3 sleep_finish+0x219 sys/kern/kern_synch.c:416
#4 biowait+0xc1 sys/kern/vfs_bio.c:1254
#5 bwrite+0x2e2 sys/kern/vfs_bio.c:766
#6 VOP_BWRITE+0x60 sys/kern/vfs_vops.c:646
#7 ufs_direnter+0x7d1 sys/ufs/ufs/ufs_lookup.c:833
#8 ufs_makeinode+0x51e sys/ufs/ufs/ufs_vnops.c:1764
#9 ufs_symlink+0x54 sys/ufs/ufs/ufs_vnops.c:1293
#10 VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432
#11 dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806
#12 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#12 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#13 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806c1c63d0)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5 vget+0x2bd sys/kern/vfs_subr.c:676
#6 ufs_ihashget+0x171 sys/ufs/ufs/ufs_ihash.c:95
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201
#8 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393
#9 ufs_makeinode+0xcb sys/ufs/ufs/ufs_vnops.c:1728
#10 ufs_symlink+0x54 sys/ufs/ufs/ufs_vnops.c:1293
#11 VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432
#12 dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806
#13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#14 Xsyscall+0x128
Process 96380 (syz-executor) thread 0xffff800033795218 (25525)
exclusive rrwlock inode r = 0 (0xfffffd806c1c61b0)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5 vget+0x2bd sys/kern/vfs_subr.c:676
#6 ufs_ihashget+0x171 sys/ufs/ufs/ufs_ihash.c:95
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1201
#8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566
#11 namei+0x7aa sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852
#13 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#13 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd804d33e4d8)
#0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1 rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464
#3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564
#5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418
#6 namei+0x7aa sys/kern/vfs_lookup.c:250
#7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1852
#8 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#8 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#9 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10215 10029K 10036K 166960K 12306 0
pcb 17 22K 24K 166960K 25 0
rtable 246 7K 7K 166960K 11268 0
pf 31 16K 16K 166960K 718 0
ifaddr 42 11K 11K 166960K 1390 0
ifgroup 50 2K 2K 166960K 1411 0
sysctl 4 1K 3K 166960K 8 0
counters 64 36K 36K 166960K 738 0
ioctlops 0 0K 2K 166960K 578 0
iov 0 0K 20K 166960K 481 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1468 92K 92K 166960K 8191 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 9K 166960K 130 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 1K 166960K 323 0
dirhash 15 2K 3K 166960K 171 0
ACPI 1697 195K 286K 166960K 12548 0
file desc 25 93K 157K 166960K 10927 0
sigio 0 0K 0K 166960K 151 0
proc 56 78K 176K 166960K 10486 0
subproc 104 6K 13K 166960K 5824 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 1 0K 0K 166960K 1826 0
in_multi 99 7K 7K 166960K 4032 0
ether_multi 1 0K 0K 166960K 34 0
mrt 1 0K 0K 166960K 1 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 241 1076K 1076K 166960K 241 0
exec 0 0K 1K 166960K 5583 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 274 75K 132K 166960K 80338 0
UVM aobj 131 5K 7K 166960K 140 0
pinsyscall 46 92K 126K 166960K 20680 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 432 0
NDP 11 0K 2K 166960K 1027 0
temp 75 6824K 6904K 166960K 86872 0
kqueue 14 22K 34K 166960K 1014 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 24 0 0 1 0 1 1 0 8 0
rtpcb 120 1614 0 1611 12 11 1 5 0 8 0
rtentry 112 3844 0 3728 13 9 4 4 0 8 0
unpcb 144 6393 0 6242 66 60 6 8 0 8 0
syncache 336 69 0 69 26 25 1 1 0 8 1
tcpqe 32 41 0 41 16 15 1 1 0 8 1
tcpcb 808 4731 0 4719 114 110 4 17 0 8 2
arp 120 686 0 668 1 0 1 1 0 8 0
ipq 40 44 0 38 3 2 1 1 0 8 0
ipqe 40 446 0 440 3 2 1 1 0 8 0
inpcb 336 12158 0 12141 170 160 10 18 0 8 8
nd6 136 1091 0 1061 4 2 2 2 0 8 0
kcovpl 48 448 0 440 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 15611 0 15125 195 164 31 32 0 8 0
art_table 32 15612 0 15125 6 2 4 5 0 8 0
art_node 16 3843 0 3737 1 0 1 1 0 8 0
sysvmsgpl 40 17 0 8 1 0 1 1 0 8 0
semapl 112 320 0 310 1 0 1 1 0 8 0
shmpl 112 137 0 9 4 0 4 4 0 8 0
dirhash 1024 130 0 107 7 3 4 4 0 8 1
dino2pl 256 10735 0 8289 157 3 154 154 0 8 0
ffsino 272 10735 0 8289 164 0 164 164 0 8 0
nchpl 144 18403 0 16029 89 0 89 89 0 8 0
uvmvnodes 80 9593 0 0 196 0 196 196 0 8 0
vnodes 216 9593 0 0 533 0 533 533 0 8 0
namei 1024 97730 0 97729 49 48 1 2 0 8 0
percpumem 16 383 0 337 1 0 1 1 0 8 0
kstatmem 264 696 0 674 2 0 2 2 0 8 0
scxspl 216 189912 0 189912 51 48 3 8 1 8 3
plimitpl 152 2498 0 2473 2 0 2 2 0 8 0
sigapl 424 10341 0 10285 21 13 8 9 0 8 0
futexpl 64 80623 0 80619 29 28 1 1 0 8 0
knotepl 120 1179 0 0 17 0 17 17 0 8 0
kqueuepl 216 2316 0 2306 33 30 3 5 0 8 2
pipepl 320 2345 0 2318 30 26 4 8 0 8 0
fdescpl 496 10322 0 10285 24 18 6 7 0 8 0
filepl 152 58982 0 58600 79 61 18 19 0 8 3
lockfpl 104 1934 0 1932 1 0 1 1 0 8 0
lockfspl 48 603 0 601 1 0 1 1 0 8 0
sessionpl 144 376 0 360 1 0 1 1 0 8 0
pgrppl 48 1097 0 1073 1 0 1 1 0 8 0
ucredpl 104 10074 0 10055 1 0 1 1 0 8 0
zombiepl 144 10287 0 10285 1 0 1 1 0 8 0
processpl 1160 10341 0 10285 6 0 6 6 0 8 0
procpl 648 19385 0 19320 14 7 7 7 0 8 0
srpgc 96 25 0 25 9 9 0 1 0 8 0
sosppl 168 94 0 94 27 26 1 1 0 8 1
sockpl 664 20329 0 20158 235 220 15 22 0 8 0
mcl64k 65536 18 0 0 3 0 3 3 0 8 0
mcl16k 16384 2 0 0 1 0 1 1 0 8 0
mcl12k 12288 3 0 0 1 0 1 1 0 8 0
mcl9k 9216 3 0 0 1 0 1 1 0 8 0
mcl8k 8192 9 0 0 2 0 2 2 0 8 0
mcl4k 4096 5 0 0 1 0 1 1 0 8 0
mcl2k2 2112 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 507 0 0 29 8 21 29 0 8 0
mtagpl 96 4 0 0 1 0 1 1 0 8 0
mbufpl 256 3321 0 0 177 1 176 177 0 8 0
bufpl 280 19527 0 9934 686 0 686 686 0 8 0
anonpl 24 1431415 0 1423719 289 181 108 113 0 185 32
amapchunkpl 152 264204 0 263457 132 97 35 49 0 158 3
amappl16 200 26790 0 26644 293 271 22 42 0 8 5
amappl15 192 17 0 17 3 3 0 1 0 8 0
amappl14 184 821 0 811 1 0 1 1 0 8 0
amappl13 176 35 0 35 3 3 0 1 0 8 0
amappl12 168 16356 0 16319 14 11 3 3 0 8 0
amappl11 160 49 0 39 1 0 1 1 0 8 0
amappl10 152 24 0 23 1 0 1 1 0 8 0
amappl9 144 137 0 137 1 1 0 1 0 8 0
amappl8 136 23 0 20 1 0 1 1 0 8 0
amappl7 128 806 0 795 1 0 1 1 0 8 0
amappl6 120 3492 0 3490 1 0 1 1 0 8 0
amappl5 112 1494 0 1484 1 0 1 1 0 8 0
amappl4 104 1394 0 1376 1 0 1 1 0 8 0
amappl3 96 43788 0 43671 6 2 4 4 0 8 0
amappl2 88 11425 0 11342 3 0 3 3 0 8 0
amappl1 80 65648 0 65093 23 8 15 15 0 8 0
amappl 88 76986 0 76767 8 2 6 6 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 72 139 0 9 3 0 3 3 0 8 0
uaddrrnd 24 10322 0 10285 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 10322 0 10285 1 0 1 1 0 8 0
vmmpekpl 168 90651 0 90604 5 1 4 4 0 8 0
vmmpepl 168 639810 0 637610 291 170 121 126 0 357 14
vmsppl 440 10321 0 10285 10 5 5 6 0 8 0
rwobjpl 56 179104 0 168357 183 26 157 161 0 8 0
pdppl 4096 20651 0 20570 1108 1023 85 113 0 8 4
pvpl 32 46851 0 0 374 0 374 374 0 265 0
pmappl 248 10321 0 10285 14 11 3 4 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 2207 0 1547 20 0 20 20 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
fifo_write(ffff800036fb37b0) at fifo_write+0x6e sys/miscfs/fifofs/fifo_vnops.c:281
VOP_WRITE(fffffd8056518880,ffff800036fb3848,8,fffffd807f7d32d8) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245
vn_rdwr(1,fffffd8056518880,ffff800029fe7800,fc,0,1,f270d2358658ed,ffff800036fb3970,fffffd8056518880,78) at vn_rdwr+0x12d sys/kern/vfs_vnops.c:324
ufs_symlink(ffff800036fb3970) at ufs_symlink+0x1ee sys/ufs/ufs/ufs_vnops.c:1309
VOP_SYMLINK(fffffd806b3d1a78,ffff800036fb3af0,ffff800036fb3b20,ffff800036fb3a20,ffff800029fe7800) at VOP_SYMLINK+0x11a sys/kern/vfs_vops.c:432
dosymlinkat(ffff8000337959b0,20000500,3,20000c80) at dosymlinkat+0x1dd sys/kern/vfs_syscalls.c:1806
syscall(ffff800036fb3ca0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff800036fb3ca0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x179cb739610, count: -8
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393
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(ffffffff83501918) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline]
__mp_lock(ffffffff83501918) at __mp_lock+0x192 sys/kern/kern_lock.c:144
end trace frame: 0x0, count: 11
ddb{1}> trace
x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393
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(ffffffff83501918) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline]
__mp_lock(ffffffff83501918) at __mp_lock+0x192 sys/kern/kern_lock.c:144
end trace frame: 0x0, count: -4