witness: lock order reversal:
1st 0xfffffd807efff5d8 vmmaplk (&map->lock)
2nd 0xfffffd806bae24e8 inode (&ip->i_lock)
lock order "&ip->i_lock"(rrwlock) -> "&map->lock"(rwlock) first seen at:
#0 witness_checkorder+0x65e witness_lock_order_add sys/kern/subr_witness.c:2463 [inline]
#0 witness_checkorder+0x65e sys/kern/subr_witness.c:880
#1 rw_enter_read+0x66 sys/kern/kern_rwlock.c:111
#2 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1438
#3 uvm_fault+0x7e sys/uvm/uvm_fault.c:526
#4 pageflttrap+0x254 sys/arch/amd64/amd64/trap.c:219
#5 kerntrap+0xf1 sys/arch/amd64/amd64/trap.c:301
#6 alltraps_kern_meltdown+0x7b
#7 copyout+0x53
#8 ffs_read+0x3e2 sys/ufs/ffs/ffs_vnops.c:258
#9 VOP_READ+0xbf sys/kern/vfs_vops.c:247
#10 vn_rdwr+0x10b
#11 vmcmd_map_readvn+0xda sys/kern/exec_subr.c:246
#12 exec_process_vmcmds+0xb2 sys/kern/exec_subr.c:143
#13 sys_execve+0x9ff sys/kern/kern_exec.c:461
#14 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#14 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:567
#15 Xsyscall+0x128
lock order "&map->lock"(rwlock) -> "&ip->i_lock"(rrwlock) first seen at:
#0 witness_checkorder+0x65e witness_lock_order_add sys/kern/subr_witness.c:2463 [inline]
#0 witness_checkorder+0x65e sys/kern/subr_witness.c:880
#1 rw_enter+0xd4
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462
#3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603
#4 vn_lock+0x6c sys/kern/vfs_vnops.c:575
#5 uvn_io+0x2b5 sys/uvm/uvm_vnode.c:1196
#6 uvn_get+0x226 sys/uvm/uvm_vnode.c:1056
#7 uvm_fault+0x1197 sys/uvm/uvm_fault.c:1016
#8 uvm_fault_wire+0x63 sys/uvm/uvm_fault.c:1285
#9 uvm_map_pageable_wire+0x30d sys/uvm/uvm_map.c:2367
#10 sys_mlockall+0x6a sys/uvm/uvm_mmap.c:828
#11 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#11 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:567
#12 Xsyscall+0x128
Stopped at db_enter+0x18: addq $0x8,%rsp
ddb{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
the kernel did not panic
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
witness_checkorder(fffffd806bae24e8,9,0) at witness_checkorder+0xf5a witness_debugger sys/kern/subr_witness.c:2490 [inline]
witness_checkorder(fffffd806bae24e8,9,0) at witness_checkorder+0xf5a sys/kern/subr_witness.c:1087
rw_enter(fffffd806bae24d8,81) at rw_enter+0xd4
rrw_enter(fffffd806bae24d8,81) at rrw_enter+0x88 sys/kern/kern_rwlock.c:462
VOP_LOCK(fffffd806ba4a360,81) at VOP_LOCK+0x4b sys/kern/vfs_vops.c:603
vn_lock(fffffd806ba4a360,81) at vn_lock+0x6c sys/kern/vfs_vnops.c:575
uvn_io(fffffd80773e5878,ffff8000234f6448,1,2,0) at uvn_io+0x2b5 sys/uvm/uvm_vnode.c:1196
uvn_get(fffffd80773e5878,12000,ffff8000234f66a0,ffff8000234f663c,0,3) at uvn_get+0x226 sys/uvm/uvm_vnode.c:1056
uvm_fault(fffffd807efff5c0,1b32532000,2,3) at uvm_fault+0x1197 sys/uvm/uvm_fault.c:1016
uvm_fault_wire(fffffd807efff5c0,1b32520000,1b33520000,3) at uvm_fault_wire+0x63 sys/uvm/uvm_fault.c:1285
uvm_map_pageable_wire(fffffd807efff5c0,fffffd80514e8c28,0,39b,ffffffff81071de0,0) at uvm_map_pageable_wire+0x30d sys/uvm/uvm_map.c:2367
sys_mlockall(ffff8000ffffb3d8,ffff8000234f6878,ffff8000234f68c0) at sys_mlockall+0x6a sys/uvm/uvm_mmap.c:828
syscall(ffff8000234f6940) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000234f6940) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:567
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x75f1fde6870, count: -14
ddb{0}> show registers
rdi 0x3
rsi 0x40000 acpi_pdirpa+0x2be68
rbp 0xffff8000234f60a0
rbx 0x3
rdx 0xffff800000af1f00
rcx 0x3
rax 0x3ffff acpi_pdirpa+0x2be67
r8 0xffffffff817c2c03 witness_checkorder+0xf33
r9 0x5
r10 0x65ab251cc98c995d
r11 0xe30cda2168c25c03
r12 0xffffffff82869e40 w_lodata+0x54430
r13 0
r14 0xffffffff828562b0 w_lodata+0x408a0
r15 0xfffffd8002c8a480
rip 0xffffffff81878348 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff8000234f6090
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.1) pid=329609 stat=onproc
flags process=10<SUGID> proc=4000000<THREAD>
pri=32, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffffaee8,0xffffffff82888be0
process=0xffff80002124db90 user=0xffff8000234f1000, vmspace=0xfffffd807efff5c0
estcpu=36, cpticks=7, pctcpu=0.0
user=0, sys=7, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
78301 518963 50307 32767 2 0x10 syz-executor.1
*78301 329609 50307 32767 7 0x4000010 syz-executor.1
59199 73561 0 0 3 0x14200 bored sosplice
50307 133239 8809 32767 2 0x490 syz-executor.1
86206 266676 82032 32767 7 0x10 syz-executor.0
8809 175465 60584 0 3 0x82 wait syz-executor.1
82032 386698 60584 0 3 0x82 wait syz-executor.0
60584 197507 26158 0 3 0x82 thrsleep syz-fuzzer
60584 220338 26158 0 2 0x4000482 syz-fuzzer
60584 286869 26158 0 3 0x4000082 kqread syz-fuzzer
60584 199385 26158 0 3 0x4000082 thrsleep syz-fuzzer
60584 259398 26158 0 3 0x4000082 thrsleep syz-fuzzer
60584 421631 26158 0 3 0x4000082 thrsleep syz-fuzzer
60584 375968 26158 0 2 0x4000482 syz-fuzzer
60584 176075 26158 0 3 0x4000082 thrsleep syz-fuzzer
26158 116194 52251 0 3 0x10008a pause ksh
52251 430457 1987 0 3 0x92 select sshd
4235 324402 1 0 3 0x100083 ttyin getty
1987 369221 1 0 3 0x80 select sshd
37976 504880 68582 73 3 0x100090 kqread syslogd
68582 210428 1 0 3 0x100082 netio syslogd
9492 99639 1 77 3 0x100090 poll dhclient
24937 408115 1 0 3 0x80 poll dhclient
16289 13128 0 0 3 0x14200 bored smr
83009 263010 0 0 2 0x14200 zerothread
6358 424135 0 0 3 0x14200 aiodoned aiodoned
41486 115978 0 0 3 0x14200 syncer update
89204 139469 0 0 3 0x14200 cleaner cleaner
73460 195424 0 0 3 0x14200 reaper reaper
86003 462967 0 0 3 0x14200 pgdaemon pagedaemon
96996 426369 0 0 3 0x14200 bored crynlk
74565 39957 0 0 3 0x14200 bored crypto
93963 270324 0 0 3 0x40014200 acpi0 acpi0
36064 136223 0 0 3 0x40014200 idle1
2777 496083 0 0 3 0x14200 bored softnet
25615 166033 0 0 3 0x14200 bored systqmp
83486 420022 0 0 3 0x14200 bored systq
25093 158536 0 0 3 0x40014200 bored softclock
87961 134843 0 0 3 0x40014200 idle0
1 422471 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 78301 (syz-executor.1) thread 0xffff8000ffffb3d8 (329609)
shared rwlock vmmaplk r = 0 (0xfffffd807efff5d8)
#0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164
#1 rw_enter+0x446 sys/kern/kern_rwlock.c:311
#2 vm_map_lock_ln+0xda sys/uvm/uvm_map.c:5452
#3 uvm_map_pageable_all+0x56 sys/uvm/uvm_map.c:2576
#4 sys_mlockall+0x6a sys/uvm/uvm_mmap.c:828
#5 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#5 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:567
#6 Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82889918)
#0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164
#1 syscall+0x3fd mi_syscall sys/sys/syscall_mi.h:93 [inline]
#1 syscall+0x3fd sys/arch/amd64/amd64/trap.c:567
#2 Xsyscall+0x128
Process 86206 (syz-executor.0) thread 0xffff8000fffff3d0 (266676)
exclusive rrwlock inode r = 0 (0xfffffd805b39d918)
#0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164
#1 rw_enter+0x446 sys/kern/kern_rwlock.c:311
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462
#3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140
#4 ffs_vget+0x135 sys/ufs/ffs/ffs_vfsops.c:1350
#5 ffs_inode_alloc+0x1e1 sys/ufs/ffs/ffs_alloc.c:394
#6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162
#7 VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450
#8 domkdirat+0x121 sys/kern/vfs_syscalls.c:3064
#9 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#9 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:567
#10 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806bae25f8)
#0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4b0 sys/kern/subr_witness.c:1164
#1 rw_enter+0x446 sys/kern/kern_rwlock.c:311
#2 rrw_enter+0x88 sys/kern/kern_rwlock.c:462
#3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:603
#4 vn_lock+0x6c sys/kern/vfs_vnops.c:575
#5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419
#6 namei+0x5f7 sys/kern/vfs_lookup.c:249
#7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3049
#8 syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline]
#8 syscall+0x4a1 sys/arch/amd64/amd64/trap.c:567
#9 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9466 6331K 6331K 78643K 10558 0
pcb 13 8K 8K 78643K 13 0
rtable 105 3K 3K 78643K 656 0
ifaddr 39 10K 10K 78643K 39 0
counters 43 33K 33K 78643K 43 0
ioctlops 0 0K 2K 78643K 97 0
iov 0 0K 16K 78643K 53 0
mount 1 1K 1K 78643K 1 0
vnodes 1216 76K 76K 78643K 1228 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 16 0
VM map 2 1K 1K 78643K 2 0
sem 12 1K 1K 78643K 16 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1824 197K 290K 78643K 13058 0
file desc 7 21K 33K 78643K 56011 0
sigio 0 0K 0K 78643K 90 0
proc 48 50K 83K 78643K 451 0
subproc 34 2K 2K 78643K 34 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 5085 0
in_multi 33 2K 2K 78643K 44 0
ether_multi 1 0K 0K 78643K 5 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 49 228K 228K 78643K 49 0
exec 0 0K 2K 78643K 716 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 585 70K 70K 78643K 116022 0
UVM aobj 131 4K 4K 78643K 133 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 15 0
NDP 5 0K 0K 78643K 9 0
temp 102 3965K 4057K 78643K 113863 0
kqueue 3 4K 9K 78643K 510 0
SYN cache 2 16K 16K 78643K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 6 0 0 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 96 536 0 534 1 0 1 1 0 8 0
rtentry 112 45 0 1 2 0 2 2 0 8 0
unpcb 120 3415 0 3405 1 0 1 1 0 8 0
syncache 272 5 0 5 2 2 0 1 0 8 0
sackhl 24 1 0 1 1 1 0 1 0 8 0
tcpqe 32 254 0 254 1 1 0 1 0 8 0
tcpcb 592 306 0 298 8 7 1 6 0 8 0
inpcb 296 2529 0 2522 10 8 2 2 0 8 1
ip6q 72 1 0 1 1 1 0 1 0 8 0
ip6af 40 2 0 2 1 1 0 1 0 8 0
nd6 48 6 0 0 1 0 1 1 0 8 0
kcovpl 48 2 0 0 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 189 0 0 12 0 12 12 0 8 0
art_table 32 190 0 0 2 0 2 2 0 8 0
art_node 16 44 0 4 1 0 1 1 0 8 0
semupl 112 7 0 7 1 1 0 1 0 8 0
semapl 112 10 0 0 1 0 1 1 0 8 0
shmpl 112 130 0 2 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 57636 0 56240 88 0 88 88 0 8 0
ffsino 272 57636 0 56240 94 0 94 94 0 8 0
nchpl 144 116964 0 115368 60 0 60 60 0 8 0
uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0
vnodes 208 5926 0 0 312 0 312 312 0 8 0
namei 1024 239197 0 239196 5 4 1 1 0 8 0
percpumem 16 32 0 0 1 0 1 1 0 8 0
scxspl 192 342351 0 342351 10 9 1 7 0 8 1
plimitpl 152 52 0 42 1 0 1 1 0 8 0
sigapl 424 56199 0 56167 4 0 4 4 0 8 0
futexpl 56 219472 0 219472 4 3 1 1 0 8 1
knotepl 112 572 0 552 1 0 1 1 0 8 0
kqueuepl 152 53244 0 53242 1 0 1 1 0 8 0
pipepl 304 1300 0 1289 16 15 1 2 0 8 0
fdescpl 496 56183 0 56167 3 0 3 3 0 8 0
filepl 152 127538 0 127439 15 10 5 5 0 8 1
lockfpl 104 271 0 270 1 0 1 1 0 8 0
lockfspl 48 124 0 123 1 0 1 1 0 8 0
sessionpl 120 17 0 7 1 0 1 1 0 8 0
pgrppl 48 195 0 185 1 0 1 1 0 8 0
ucredpl 96 474 0 465 1 0 1 1 0 8 0
zombiepl 144 56167 0 56167 3 2 1 1 0 8 1
processpl 1008 56199 0 56167 7 2 5 5 0 8 0
procpl 632 112599 0 112559 4 0 4 4 0 8 0
sosppl 144 7 0 7 2 2 0 1 0 8 0
sockpl 400 8201 0 8182 15 12 3 4 0 8 0
mcl64k 65536 17 0 0 3 0 3 3 0 8 0
mcl16k 16384 2 0 0 1 0 1 1 0 8 0
mcl12k 12288 17 0 0 2 0 2 2 0 8 0
mcl9k 9216 17 0 0 2 0 2 2 0 8 0
mcl8k 8192 17 0 0 3 0 3 3 0 8 0
mcl4k 4096 17 0 0 3 0 3 3 0 8 0
mcl2k2 2112 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 522 0 0 48 25 23 48 0 8 1
mtagpl 96 1 0 0 1 0 1 1 0 8 0
mbufpl 256 1186 0 0 29 1 28 29 0 8 0
bufpl 280 59504 0 53256 447 0 447 447 0 8 0
anonpl 16 3289113 0 3181264 445 11 434 434 0 124 0
amapchunkpl 152 174870 0 170786 164 6 158 158 0 158 0
amappl16 192 128245 0 125566 139 4 135 135 0 8 1
amappl15 184 2 0 1 2 1 1 1 0 8 0
amappl14 176 27869 0 27862 1 0 1 1 0 8 0
amappl13 168 278 0 277 1 0 1 1 0 8 0
amappl12 160 8 0 4 1 0 1 1 0 8 0
amappl11 152 46 0 37 1 0 1 1 0 8 0
amappl10 144 10 0 6 1 0 1 1 0 8 0
amappl9 136 368 0 366 1 0 1 1 0 8 0
amappl8 128 175 0 117 2 0 2 2 0 8 0
amappl7 120 217 0 208 1 0 1 1 0 8 0
amappl6 112 59 0 50 1 0 1 1 0 8 0
amappl5 104 28507 0 28488 1 0 1 1 0 8 0
amappl4 96 28090 0 28066 1 0 1 1 0 8 0
amappl3 88 466 0 457 1 0 1 1 0 8 0
amappl2 80 405995 0 405923 2 0 2 2 0 8 0
amappl1 72 1622942 0 1622448 24 14 10 18 0 8 0
amappl 80 113294 0 112777 11 0 11 11 0 84 0
dma4096 4096 1 0 1 1 1 0 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 64 132 0 2 3 0 3 3 0 8 0
uaddrrnd 24 56183 0 56167 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 56183 0 56167 1 0 1 1 0 8 0
vmmpekpl 168 195473 0 195442 2 0 2 2 0 8 0
vmmpepl 168 7083576 0 7079121 307 106 201 251 0 357 5
vmsppl 368 56182 0 56167 2 0 2 2 0 8 0
pdppl 4096 112373 0 112334 6 0 6 6 0 8 0
pvpl 32 13036086 0 12925031 959 63 896 896 0 265 0
pmappl 232 56182 0 56167 2 1 1 2 0 8 0
extentpl 40 53 0 36 1 0 1 1 0 8 0
phpool 112 317 0 46 9 0 9 9 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
witness_checkorder(fffffd806bae24e8,9,0) at witness_checkorder+0xf5a witness_debugger sys/kern/subr_witness.c:2490 [inline]
witness_checkorder(fffffd806bae24e8,9,0) at witness_checkorder+0xf5a sys/kern/subr_witness.c:1087
rw_enter(fffffd806bae24d8,81) at rw_enter+0xd4
rrw_enter(fffffd806bae24d8,81) at rrw_enter+0x88 sys/kern/kern_rwlock.c:462
VOP_LOCK(fffffd806ba4a360,81) at VOP_LOCK+0x4b sys/kern/vfs_vops.c:603
vn_lock(fffffd806ba4a360,81) at vn_lock+0x6c sys/kern/vfs_vnops.c:575
uvn_io(fffffd80773e5878,ffff8000234f6448,1,2,0) at uvn_io+0x2b5 sys/uvm/uvm_vnode.c:1196
uvn_get(fffffd80773e5878,12000,ffff8000234f66a0,ffff8000234f663c,0,3) at uvn_get+0x226 sys/uvm/uvm_vnode.c:1056
uvm_fault(fffffd807efff5c0,1b32532000,2,3) at uvm_fault+0x1197 sys/uvm/uvm_fault.c:1016
uvm_fault_wire(fffffd807efff5c0,1b32520000,1b33520000,3) at uvm_fault_wire+0x63 sys/uvm/uvm_fault.c:1285
uvm_map_pageable_wire(fffffd807efff5c0,fffffd80514e8c28,0,39b,ffffffff81071de0,0) at uvm_map_pageable_wire+0x30d sys/uvm/uvm_map.c:2367
sys_mlockall(ffff8000ffffb3d8,ffff8000234f6878,ffff8000234f68c0) at sys_mlockall+0x6a sys/uvm/uvm_mmap.c:828
syscall(ffff8000234f6940) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000234f6940) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:567
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x75f1fde6870, count: -14
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
ddb{1}> trace
x86_ipi_db(ffff800020d80ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352
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+0x37 kd_curproc sys/dev/kcov.c:569 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x37 sys/dev/kcov.c:143
__mp_lock(ffffffff82889710) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82889710) at __mp_lock+0x133 sys/kern/kern_lock.c:147
__mp_acquire_count(ffffffff82889710,1) at __mp_acquire_count+0x4c sys/kern/kern_lock.c:227
mi_switch() at mi_switch+0x390 sys/kern/sched_bsd.c:435
sleep_finish(ffff8000212e8680,1) at sleep_finish+0x111 sys/kern/kern_synch.c:418
sleep_finish_all(ffff8000212e8680,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline]
sleep_finish_all(ffff8000212e8680,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393
tsleep(fffffd805bac5028,11,ffffffff824306ec,0) at tsleep+0x1c2 sys/kern/kern_synch.c:155
biowait(fffffd805bac5028) at biowait+0x91 sys/kern/vfs_bio.c:1271
bwrite(fffffd805bac5028) at bwrite+0x213 sys/kern/vfs_bio.c:772
ffs_update(fffffd806bae2560,1) at ffs_update+0x2c2 sys/ufs/ffs/ffs_inode.c:113
ufs_mkdir(ffff8000212e89c0) at ufs_mkdir+0x433 sys/ufs/ufs/ufs_vnops.c:1197
VOP_MKDIR(fffffd806ba4a430,ffff8000212e8b20,ffff8000212e8b70,ffff8000212e8a50) at VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450
domkdirat(ffff8000fffff3d0,ffffff9c,7f7ffffdb1a0,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3064
syscall(ffff8000212e8cf0) at syscall+0x4a1 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff8000212e8cf0) at syscall+0x4a1 sys/arch/amd64/amd64/trap.c:567
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffdb210, count: -18