uvm_fault(0xfffffd807125b018, 0x20, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at lf_advlock+0x233: movq 0(%r14),%r12
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 77282 37802 32767 0x10 0x4000000 0 syz-executor
40265 48956 32767 0x10 0 1 syz-executor
lf_advlock(20,0,fffffd8079583d90,7,ffff80002bee9300,40) at lf_advlock+0x233 sys/kern/vfs_lockf.c:261
VOP_ADVLOCK(fffffd805d1dc000,fffffd8079583d90,7,ffff80002bee9300,40) at VOP_ADVLOCK+0x87 sys/kern/vfs_vops.c:618
sys_fcntl(ffff80003339d1d8,ffff80002bee9460,ffff80002bee93b0) at sys_fcntl+0x1140 sys/kern/kern_descrip.c:622
syscall(ffff80002bee9460) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002bee9460) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x729530c3bf0, count: 10
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(0xfffffd807125b018, 0x20, 0, 1) -> e
ddb{0}> trace
lf_advlock(20,0,fffffd8079583d90,7,ffff80002bee9300,40) at lf_advlock+0x233 sys/kern/vfs_lockf.c:261
VOP_ADVLOCK(fffffd805d1dc000,fffffd8079583d90,7,ffff80002bee9300,40) at VOP_ADVLOCK+0x87 sys/kern/vfs_vops.c:618
sys_fcntl(ffff80003339d1d8,ffff80002bee9460,ffff80002bee93b0) at sys_fcntl+0x1140 sys/kern/kern_descrip.c:622
syscall(ffff80002bee9460) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002bee9460) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x729530c3bf0, count: -5
ddb{0}> show registers
rdi 0
rsi 0
rbp 0xffff80002bee9210
rbx 0
rdx 0
rcx 0xffff80003339d1d8
rax 0xd
r8 0xffff80002bee9300
r9 0x40
r10 0x6890a1466a848ec0
r11 0x15725eb70eb97835
r12 0
r13 0x7
r14 0x20
r15 0xffffffffffffffff
rip 0xffffffff8109c7d3 lf_advlock+0x233
cs 0x8
rflags 0x10246 __ALIGN_SIZE+0xf246
rsp 0xffff80002bee9180
ss 0x10
lf_advlock+0x233: movq 0(%r14),%r12
ddb{0}> show proc
PROC (syz-executor) tid=77282 pid=37802 tcnt=3 stat=onproc
flags process=10<SUGID> proc=4000000<THREAD>
runpri=32, usrpri=80, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002a0b6810,0xffff80002a0b6310
process=0xffff80002a0a56b8 user=0xffff80002bee4000, vmspace=0xfffffd807125b018
estcpu=30, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
47645 126428 84457 32767 2 0x10 syz-executor
47645 151255 84457 32767 3 0x4000090 sbwait syz-executor
81620 302872 40682 32767 2 0x10 syz-executor
81620 407253 40682 32767 3 0x4000090 fsleep syz-executor
7416 452731 55072 32767 2 0x10 syz-executor
7416 70665 55072 32767 3 0x4000090 ttyin syz-executor
7416 512891 55072 32767 2 0x4000010 syz-executor
37802 214072 55427 32767 2 0x10 syz-executor
37802 158285 55427 32767 2 0x4000010 syz-executor
*37802 77282 55427 32767 7 0x4000010 syz-executor
55072 205240 14739 32767 3 0x90 nanoslp syz-executor
14739 74492 15848 0 3 0x82 wait syz-executor
55427 58043 37452 32767 2 0x490 syz-executor
37452 349761 15848 0 3 0x82 wait syz-executor
40682 330017 45198 32767 3 0x90 nanoslp syz-executor
45198 140640 15848 0 3 0x82 wait syz-executor
48956 40265 88421 32767 7 0x10 syz-executor
88421 201854 15848 0 3 0x82 wait syz-executor
48768 507416 14893 32767 2 0x490 syz-executor
14893 175831 15848 0 3 0x82 wait syz-executor
84457 25424 98116 32767 2 0x490 syz-executor
98116 105570 15848 0 3 0x82 wait syz-executor
46694 214667 44201 32767 2 0x490 syz-executor
44201 227205 15848 0 3 0x82 wait syz-executor
89954 225672 56738 32767 2 0x490 syz-executor
56738 154604 15848 0 3 0x82 wait syz-executor
52101 188314 85909 0 3 0x82 netio sshd-session
76243 189751 8529 0 3 0x100082 sbwait ndp
8529 58712 88270 0 3 0x10008a sigsusp sh
88270 51778 1 0 3 0x80 wait syz-executor
17140 308069 0 0 3 0x14200 bored sosplice
15848 471304 46277 0 3 0x82 kqread syz-executor
46277 134614 11557 0 3 0x10008a sigsusp ksh
11557 43312 93547 0 3 0x98 kqread sshd-session
93547 386929 85909 0 3 0x92 kqread sshd-session
44999 382913 1 0 3 0x100083 ttyin getty
85909 297758 1 0 3 0x88 kqread sshd
46551 111130 55462 73 3 0x1100090 kqread syslogd
55462 330917 1 0 3 0x100082 sbwait syslogd
74520 185956 1 0 3 0x100080 kqread resolvd
46158 400166 63994 77 3 0x100092 kqread dhcpleased
38734 485495 63994 77 3 0x100092 kqread dhcpleased
63994 51743 1 0 3 0x80 kqread dhcpleased
75197 118776 0 0 3 0x14200 bored smr
7992 234718 0 0 2 0x14200 zerothread
45746 220294 0 0 3 0x14200 aiodoned aiodoned
23420 98204 0 0 2 0x14600 update
69805 435557 0 0 3 0x14200 cleaner cleaner
42131 504593 0 0 3 0x14200 reaper reaper
32771 21767 0 0 3 0x14200 pgdaemon pagedaemon
98201 429349 0 0 3 0x14200 bored viomb
41488 358083 0 0 3 0x40014200 acpi0 acpi0
24111 150883 0 0 3 0x40014200 idle1
43130 485522 0 0 3 0x14200 bored softnet3
58704 195482 0 0 3 0x14200 bored softnet2
73090 506891 0 0 3 0x14200 bored softnet1
97357 349521 0 0 3 0x14200 bored softnet0
50307 384542 0 0 3 0x14200 bored systqmp
45073 509609 0 0 3 0x14200 bored systq
93904 92371 0 0 2 0x14200 softclockmp
49877 143678 0 0 2 0x40014200 softclock
50819 123773 0 0 3 0x40014200 idle0
1 422857 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 37802 (syz-executor) thread 0xffff80002a0b6810 (158285)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8353cd50)
#0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5bb sys/kern/subr_witness.c:1155
#1 vn_closefile+0x41 sys/kern/vfs_vnops.c:602
#2 fdrop+0x126 sys/kern/kern_descrip.c:1274
#3 closef+0x192 sys/kern/kern_descrip.c:1258
#4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
#5 Xsyscall+0x128
Process 37802 (syz-executor) thread 0xffff80003339d1d8 (77282)
exclusive rwlock lockflk r = 0 (0xffffffff83406380)
#0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5bb sys/kern/subr_witness.c:1155
#1 lf_advlock+0x22a sys/kern/vfs_lockf.c:261
#2 VOP_ADVLOCK+0x87 sys/kern/vfs_vops.c:618
#3 sys_fcntl+0x1140 sys/kern/kern_descrip.c:622
#4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
#5 Xsyscall+0x128
Process 48956 (syz-executor) thread 0xffff80002a0b6588 (40265)
exclusive rrwlock inode r = 0 (0xfffffd807a8f3b38)
#0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5bb sys/kern/subr_witness.c:1155
#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+0x192 sys/ufs/ufs/ufs_ihash.c:98
#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 (0xfffffd805ad054e8)
#0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5bb sys/kern/subr_witness.c:1155
#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 10218 11052K 11059K 166960K 12621 0
pcb 17 18K 20K 166960K 23 0
rtable 240 6K 7K 166960K 14275 0
pf 31 16K 16K 166960K 927 0
ifaddr 42 11K 11K 166960K 1814 0
ifgroup 50 2K 2K 166960K 1828 0
sysctl 4 1K 3K 166960K 41 0
counters 64 36K 36K 166960K 946 0
ioctlops 0 0K 2K 166960K 652 0
iov 0 0K 28K 166960K 829 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1470 92K 92K 166960K 9348 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 9K 166960K 151 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 441 0
dirhash 18 3K 4K 166960K 189 0
ACPI 1690 195K 286K 166960K 12418 0
file desc 28 105K 177K 166960K 13957 0
sigio 0 0K 0K 166960K 249 0
proc 58 79K 176K 166960K 13623 0
subproc 117 7K 13K 166960K 6929 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 2082 0
in_multi 99 7K 7K 166960K 5281 0
ether_multi 1 0K 0K 166960K 46 0
mrt 1 0K 0K 166960K 3 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 247 1102K 1102K 166960K 247 0
exec 0 0K 1K 166960K 7631 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 294 84K 159K 166960K 102695 0
UVM aobj 131 7K 7K 166960K 139 0
pinsyscall 52 104K 140K 166960K 26827 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 1K 166960K 694 0
NDP 11 0K 2K 166960K 1346 0
temp 79 6824K 6906K 166960K 105604 0
kqueue 13 20K 36K 166960K 1407 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 1823 0 1818 7 6 1 3 0 8 0
rtentry 112 5061 0 4948 16 12 4 4 0 8 0
unpcb 144 6901 0 6884 38 36 2 6 0 8 1
syncache 336 183 0 183 40 39 1 1 0 8 1
tcpqe 32 65 0 65 19 18 1 1 0 8 1
tcpcb 808 5548 0 5513 121 110 11 15 0 8 7
arp 120 902 0 884 1 0 1 1 0 8 0
ipq 40 50 0 45 4 3 1 1 0 8 0
ipqe 40 828 0 823 4 3 1 1 0 8 0
inpcb 336 14183 0 14146 157 143 14 18 0 8 8
nd6 136 1451 0 1424 2 0 2 2 0 8 0
kcovpl 48 533 0 524 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 20560 0 20082 237 205 32 32 0 8 0
art_table 32 20561 0 20082 8 3 5 5 0 8 0
art_node 16 5060 0 4957 1 0 1 1 0 8 0
sysvmsgpl 40 13 0 6 1 0 1 1 0 8 0
semapl 112 438 0 428 1 0 1 1 0 8 0
shmpl 112 136 0 8 4 0 4 4 0 8 0
dirhash 1024 142 0 117 11 7 4 4 0 8 0
dino2pl 256 12831 0 10104 173 1 172 172 0 8 0
ffsino 272 12831 0 10104 184 1 183 183 0 8 0
nchpl 144 22386 0 19809 96 0 96 96 0 8 0
uvmvnodes 80 9902 0 0 203 0 203 203 0 8 0
vnodes 216 9902 0 0 551 0 551 551 0 8 0
namei 1024 123460 0 123460 59 58 1 3 0 8 1
percpumem 16 487 0 441 1 0 1 1 0 8 0
kstatmem 264 904 0 882 2 0 2 2 0 8 0
scxspl 216 243883 0 243883 58 55 3 8 1 8 3
plimitpl 152 3065 0 3039 2 0 2 2 0 8 0
sigapl 424 13269 0 13209 21 13 8 9 0 8 0
futexpl 64 100697 0 100696 35 34 1 1 0 8 0
knotepl 120 1677 0 0 26 1 25 25 0 8 0
kqueuepl 216 2676 0 2667 23 21 2 5 0 8 1
pipepl 320 3120 0 3089 28 19 9 9 0 8 4
fdescpl 496 13250 0 13209 20 13 7 8 0 8 0
filepl 152 72557 0 72283 73 56 17 20 0 8 4
lockfpl 104 2356 0 2354 2 1 1 2 0 8 0
lockfspl 48 706 0 704 1 0 1 1 0 8 0
sessionpl 144 551 0 533 1 0 1 1 0 8 0
pgrppl 48 1239 0 1213 1 0 1 1 0 8 0
ucredpl 104 12114 0 12095 1 0 1 1 0 8 0
zombiepl 144 13212 0 13209 1 0 1 1 0 8 0
processpl 1160 13269 0 13209 8 2 6 6 0 8 0
procpl 648 24616 0 24550 16 9 7 7 0 8 0
srpgc 96 24 0 24 12 12 0 1 0 8 0
sosppl 168 83 0 83 23 22 1 1 0 8 1
sockpl 664 23179 0 23119 181 166 15 21 0 8 8
mcl64k 65536 20 0 0 3 0 3 3 0 8 0
mcl16k 16384 5 0 0 1 0 1 1 0 8 0
mcl12k 12288 2 0 0 1 0 1 1 0 8 0
mcl9k 9216 2 0 0 1 0 1 1 0 8 0
mcl8k 8192 23 0 0 3 1 2 3 0 8 0
mcl4k 4096 292 0 0 19 7 12 19 0 8 0
mcl2k2 2112 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 291 0 0 9 3 6 6 0 8 0
mtagpl 96 6 0 0 1 0 1 1 0 8 0
mbufpl 256 2131 0 0 80 0 80 80 0 8 0
bufpl 280 24415 0 14478 711 0 711 711 0 8 0
anonpl 24 1750371 0 1743381 314 222 92 120 0 185 19
amapchunkpl 152 325656 0 324873 154 119 35 51 0 158 0
amappl16 200 29593 0 29521 293 276 17 29 0 8 8
amappl15 192 20 0 20 4 4 0 1 0 8 0
amappl14 184 1179 0 1167 1 0 1 1 0 8 0
amappl13 176 25 0 25 9 9 0 1 0 8 0
amappl12 168 21041 0 20999 16 13 3 3 0 8 0
amappl11 160 47 0 37 1 0 1 1 0 8 0
amappl10 152 26 0 26 1 1 0 1 0 8 0
amappl9 144 157 0 156 2 1 1 1 0 8 0
amappl8 136 40 0 38 1 0 1 1 0 8 0
amappl7 128 1072 0 1059 1 0 1 1 0 8 0
amappl6 120 4564 0 4561 1 0 1 1 0 8 0
amappl5 112 1977 0 1967 1 0 1 1 0 8 0
amappl4 104 1977 0 1959 1 0 1 1 0 8 0
amappl3 96 63040 0 62893 5 0 5 5 0 8 0
amappl2 88 7889 0 7815 7 4 3 3 0 8 0
amappl1 80 97751 0 97107 31 12 19 19 0 8 0
amappl 88 98105 0 97874 9 3 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 72 138 0 8 3 0 3 3 0 8 0
uaddrrnd 24 13250 0 13209 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 13250 0 13209 1 0 1 1 0 8 0
vmmpekpl 168 116898 0 116838 9 5 4 5 0 8 0
vmmpepl 168 843725 0 841412 317 194 123 129 0 357 11
vmsppl 440 13249 0 13209 14 8 6 7 0 8 0
rwobjpl 56 233716 0 222602 190 27 163 164 0 8 1
pdppl 4096 26507 0 26418 1428 1337 91 123 0 8 2
pvpl 32 50993 0 0 402 0 402 402 0 265 0
pmappl 248 13249 0 13209 15 11 4 4 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 2529 0 1914 18 0 18 18 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
lf_advlock(20,0,fffffd8079583d90,7,ffff80002bee9300,40) at lf_advlock+0x233 sys/kern/vfs_lockf.c:261
VOP_ADVLOCK(fffffd805d1dc000,fffffd8079583d90,7,ffff80002bee9300,40) at VOP_ADVLOCK+0x87 sys/kern/vfs_vops.c:618
sys_fcntl(ffff80003339d1d8,ffff80002bee9460,ffff80002bee93b0) at sys_fcntl+0x1140 sys/kern/kern_descrip.c:622
syscall(ffff80002bee9460) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002bee9460) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x729530c3bf0, count: -5
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(ffffffff8353cb48) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline]
__mp_lock(ffffffff8353cb48) at __mp_lock+0x192 sys/kern/kern_lock.c:144
__mp_acquire_count(ffffffff8353cb48,1) at __mp_acquire_count+0x58
mi_switch() at mi_switch+0x658 sys/kern/sched_bsd.c:460
sleep_finish(0,1) at sleep_finish+0x219 sys/kern/kern_synch.c:416
biowait(fffffd806c34e488) at biowait+0xc1 sys/kern/vfs_bio.c:1254
bwrite(fffffd806c34e488) at bwrite+0x2e2 sys/kern/vfs_bio.c:766
ffs_update(fffffd807a8f3aa0,1) at ffs_update+0x34c sys/ufs/ffs/ffs_inode.c:111
ffs_truncate(fffffd807a8f3aa0,0,4,fffffd807f7d31a0) at ffs_truncate+0xcb6
ufs_rmdir(ffff80003338fc48) at ufs_rmdir+0x374 sys/ufs/ufs/ufs_vnops.c:1265
VOP_RMDIR(fffffd80517f7eb0,fffffd8079650cf0,ffff80003338fd28) at VOP_RMDIR+0x19a sys/kern/vfs_vops.c:413
dounlinkat(ffff80002a0b6588,ffffff9c,742f087bc960,8) at dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1885
end trace frame: 0xffff80003338fe90, count: 0
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(ffffffff8353cb48) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline]
__mp_lock(ffffffff8353cb48) at __mp_lock+0x192 sys/kern/kern_lock.c:144
__mp_acquire_count(ffffffff8353cb48,1) at __mp_acquire_count+0x58
mi_switch() at mi_switch+0x658 sys/kern/sched_bsd.c:460
sleep_finish(0,1) at sleep_finish+0x219 sys/kern/kern_synch.c:416
biowait(fffffd806c34e488) at biowait+0xc1 sys/kern/vfs_bio.c:1254
bwrite(fffffd806c34e488) at bwrite+0x2e2 sys/kern/vfs_bio.c:766
ffs_update(fffffd807a8f3aa0,1) at ffs_update+0x34c sys/ufs/ffs/ffs_inode.c:111
ffs_truncate(fffffd807a8f3aa0,0,4,fffffd807f7d31a0) at ffs_truncate+0xcb6
ufs_rmdir(ffff80003338fc48) at ufs_rmdir+0x374 sys/ufs/ufs/ufs_vnops.c:1265
VOP_RMDIR(fffffd80517f7eb0,fffffd8079650cf0,ffff80003338fd28) at VOP_RMDIR+0x19a sys/kern/vfs_vops.c:413
dounlinkat(ffff80002a0b6588,ffffff9c,742f087bc960,8) at dounlinkat+0x2e0 sys/kern/vfs_syscalls.c:1885
syscall(ffff80003338fea0) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80003338fea0) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x742f087bc950, count: -16