ppanic: kernel diagnostic assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/setuid/kernel/sys/uvm/uvm_map.c", line 2539
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
418139 79242 32767 0x10 0 0 syz-executor.0
*393388 31216 0 0x14000 0x200 1 reaper
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff825b348f) at panic+0x177 sys/kern/subr_prf.c:198
__assert(ffffffff8262b17a,ffffffff82657db2,9eb,ffffffff825e88cb) at __assert+0x25 sys/kern/subr_prf.c:157
uvm_map_teardown(fffffd8066632018) at uvm_map_teardown+0x308 sys/uvm/uvm_map.c:2541
uvmspace_free(fffffd8066632018) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3513
reaper(ffff8000212337a8) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: 9
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/uvm/uvm_map.c", line 2539
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff825b348f) at panic+0x177 sys/kern/subr_prf.c:198
__assert(ffffffff8262b17a,ffffffff82657db2,9eb,ffffffff825e88cb) at __assert+0x25 sys/kern/subr_prf.c:157
uvm_map_teardown(fffffd8066632018) at uvm_map_teardown+0x308 sys/uvm/uvm_map.c:2541
uvmspace_free(fffffd8066632018) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3513
reaper(ffff8000212337a8) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: -6
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff8000212399b0
rbx 0xffff800020dd9b8f
rdx 0
rcx 0
rax 0xffff8000212337a8
r8 0x101010101010101
r9 0x8080808080808080
r10 0x507a3234d4331e78
r11 0x5cebb1a3ecb80df3
r12 0xffff800020dd9990
r13 0
r14 0xffffffff829c0990 cpu_info_full_primary+0x2990
r15 0x1
rip 0xffffffff81faf658 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff8000212399a0
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (reaper) pid=393388 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
pri=4, usrpri=54, nice=20
forw=0xffffffffffffffff, list=0xffff800021233a48,0xffff800021232d38
process=0xffff8000ffffd4c8 user=0xffff800021234000, vmspace=0xffffffff82baa7f0
estcpu=4, cpticks=21, pctcpu=1.0
user=0, sys=2, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
72163 84705 72148 32767 2 0x10 syz-executor.3
52783 306716 57988 32767 2 0x10 syz-executor.7
88984 483356 50503 32767 2 0x10 syz-executor.4
16119 162779 30469 32767 2 0x10 syz-executor.5
16119 493583 30469 32767 3 0x4000090 fsleep syz-executor.5
96829 297001 40258 32767 3 0x90 nanoslp syz-executor.2
40258 133412 92175 0 3 0x82 wait syz-executor.2
15076 237322 68695 32767 2 0x10 syz-executor.6
68695 115687 92175 0 3 0x82 wait syz-executor.6
58512 98954 0 0 3 0x14200 bored sosplice
50503 162181 54401 32767 3 0x90 nanoslp syz-executor.4
54401 69412 92175 0 3 0x82 wait syz-executor.4
57988 57384 48075 32767 3 0x90 nanoslp syz-executor.7
30469 331070 74517 32767 3 0x90 nanoslp syz-executor.5
48075 330064 92175 0 3 0x82 wait syz-executor.7
72148 9054 94477 32767 3 0x90 nanoslp syz-executor.3
74517 369087 92175 0 3 0x82 wait syz-executor.5
94477 406576 92175 0 3 0x82 wait syz-executor.3
58975 77464 25422 32767 3 0x10 biowait syz-executor.1
25422 66591 92175 0 3 0x82 wait syz-executor.1
79242 418139 79936 32767 7 0x10 syz-executor.0
79936 379451 92175 0 3 0x82 wait syz-executor.0
92175 224167 47699 0 3 0x82 thrsleep syz-fuzzer
92175 438776 47699 0 3 0x4000082 nanoslp syz-fuzzer
92175 83066 47699 0 3 0x4000082 thrsleep syz-fuzzer
92175 110246 47699 0 3 0x4000082 thrsleep syz-fuzzer
92175 382626 47699 0 3 0x4000082 wait syz-fuzzer
92175 474543 47699 0 3 0x4000082 thrsleep syz-fuzzer
92175 440892 47699 0 3 0x4000082 wait syz-fuzzer
92175 248953 47699 0 3 0x4000082 wait syz-fuzzer
92175 402134 47699 0 3 0x4000082 thrsleep syz-fuzzer
92175 270733 47699 0 3 0x4000082 wait syz-fuzzer
92175 53298 47699 0 3 0x4000082 wait syz-fuzzer
92175 130746 47699 0 3 0x4000082 wait syz-fuzzer
92175 70984 47699 0 3 0x4000082 wait syz-fuzzer
92175 105456 47699 0 3 0x4000082 wait syz-fuzzer
92175 308708 47699 0 3 0x4000082 kqread syz-fuzzer
47699 419327 67759 0 3 0x10008a sigsusp ksh
67759 288613 48018 0 3 0x9a kqread sshd
55694 404115 1 0 3 0x100083 ttyin getty
48018 382888 1 0 3 0x88 kqread sshd
98261 56182 66243 73 3 0x1100090 kqread syslogd
66243 238175 1 0 3 0x100082 netio syslogd
84882 445708 1 0 3 0x100080 kqread resolvd
66215 103310 27194 77 3 0x100092 kqread dhcpleased
83062 297103 27194 77 3 0x100092 kqread dhcpleased
27194 322434 1 0 3 0x80 kqread dhcpleased
61596 244097 0 0 3 0x14200 bored smr
95320 101815 0 0 2 0x14200 zerothread
76894 366295 0 0 3 0x14200 aiodoned aiodoned
58129 41586 0 0 3 0x14200 syncer update
80399 26809 0 0 3 0x14200 cleaner cleaner
*31216 393388 0 0 7 0x14200 reaper
43386 399290 0 0 3 0x14200 pgdaemon pagedaemon
18825 306677 0 0 3 0x14200 bored viomb
43398 127244 0 0 3 0x40014200 acpi0 acpi0
2280 494957 0 0 3 0x40014200 idle1
26319 394797 0 0 3 0x14200 bored softnet
91995 358411 0 0 3 0x14200 bored softnet
47161 177754 0 0 3 0x14200 bored softnet
28757 221 0 0 3 0x14200 bored softnet
51218 114027 0 0 3 0x14200 bored systqmp
94418 90126 0 0 3 0x14200 bored systq
84918 262862 0 0 3 0x40014200 bored softclock
42220 379110 0 0 3 0x40014200 idle0
1 386530 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
CPU 1:
exclusive sched_lock &sched_lock r = 1 (0xffffffff82a10170)
#0 witness_lock+0x44d
#1 wakeup_n+0x37
#2 sched_idle+0x232 sys/kern/kern_sched.c:163
#3 proc_trampoline+0x1c
Process 15076 (syz-executor.6) thread 0xffff800022d83ce8 (237322)
exclusive rrwlock inode r = 0 (0xfffffd8069155a30)
#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:518
#4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140
#5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1353
#6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394
#7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1150
#8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388
#9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3112
#10 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#10 syscall+0x438 sys/arch/amd64/amd64/trap.c:599
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8066b1b4e8)
#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:518
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:412
#6 namei+0x36a sys/kern/vfs_lookup.c:244
#7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3097
#8 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#8 syscall+0x438 sys/arch/amd64/amd64/trap.c:599
#9 Xsyscall+0x128
Process 58975 (syz-executor.1) thread 0xffff8000ffff5500 (77464)
exclusive rrwlock inode r = 0 (0xfffffd8069155e70)
#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:518
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5 vget+0x1fc sys/kern/vfs_subr.c:676
#6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1324
#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:560
#11 namei+0x36a sys/kern/vfs_lookup.c:244
#12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848
#13 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#13 syscall+0x438 sys/arch/amd64/amd64/trap.c:599
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd80689d9808)
#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:518
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:412
#6 namei+0x36a sys/kern/vfs_lookup.c:244
#7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1848
#8 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#8 syscall+0x438 sys/arch/amd64/amd64/trap.c:599
#9 Xsyscall+0x128
Process 79242 (syz-executor.0) thread 0xffff8000ffff4540 (418139)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82a10958)
#0 witness_lock+0x44d
#1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227
#2 mi_switch+0x3bb sys/kern/sched_bsd.c:415
#3 sleep_finish+0x180 sys/kern/kern_synch.c:417
#4 tsleep+0x12c sys/kern/kern_synch.c:155
#5 biowait+0x91 sys/kern/vfs_bio.c:1268
#6 bwrite+0x21b sys/kern/vfs_bio.c:769
#7 ffs_update+0x27d sys/ufs/ffs/ffs_inode.c:113
#8 ufs_mkdir+0x662 sys/ufs/ufs/ufs_vnops.c:1220
#9 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388
#10 domkdirat+0x121 sys/kern/vfs_syscalls.c:3112
#11 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#11 syscall+0x438 sys/arch/amd64/amd64/trap.c:599
#12 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd8066b1bd68)
#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:518
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5 vget+0x1fc sys/kern/vfs_subr.c:676
#6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119
#7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1324
#8 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394
#9 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1150
#10 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388
#11 domkdirat+0x121 sys/kern/vfs_syscalls.c:3112
#12 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#12 syscall+0x438 sys/arch/amd64/amd64/trap.c:599
#13 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806be40e78)
#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:518
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:412
#6 namei+0x36a sys/kern/vfs_lookup.c:244
#7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3097
#8 syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#8 syscall+0x438 sys/arch/amd64/amd64/trap.c:599
#9 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10194 6409K 6420K 78643K 11296 0
pcb 13 10K 12K 78643K 15 0
rtable 236 6K 6K 78643K 603 0
ifaddr 82 16K 16K 78643K 112 0
counters 60 35K 35K 78643K 68 0
ioctlops 0 0K 2K 78643K 42 0
iov 0 0K 12K 78643K 160 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1271 79K 79K 78643K 1363 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 11 0
VM map 2 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 157 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 22 81K 121K 78643K 1019 0
proc 56 78K 127K 78643K 607 0
subproc 104 6K 6K 78643K 156 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 36 0
in_multi 99 6K 7K 78643K 158 0
ether_multi 1 0K 0K 78643K 4 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 73 334K 334K 78643K 73 0
exec 0 0K 1K 78643K 488 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 8 62K 64K 78643K 10 0
UVM amap 277 84K 85K 78643K 8050 0
UVM aobj 83 3K 3K 78643K 83 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 18 0
NDP 11 0K 2K 78643K 39 0
temp 123 4698K 4762K 78643K 6294 0
kqueue 12 18K 24K 78643K 100 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 62 0 59 1 0 1 1 0 8 0
rtentry 112 157 0 46 4 0 4 4 0 8 0
unpcb 144 869 0 856 9 6 3 6 0 8 2
syncache 296 15 0 15 2 2 0 1 0 8 0
tcpqe 32 83 0 83 2 2 0 1 0 8 0
tcpcb 776 601 0 594 10 8 2 10 0 8 0
arp 120 26 0 8 1 0 1 1 0 8 0
inpcb 368 812 0 803 10 8 2 10 0 8 0
nd6 48 38 0 13 1 0 1 1 0 8 0
kcovpl 48 12 0 4 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 632 0 178 29 0 29 29 0 8 0
art_table 32 633 0 178 4 0 4 4 0 8 0
art_node 16 156 0 55 1 0 1 1 0 8 0
semapl 112 155 0 145 1 0 1 1 0 8 0
shmpl 112 80 0 0 3 0 3 3 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 2435 0 1003 90 0 90 90 0 8 0
ffsino 272 2435 0 1003 96 0 96 96 0 8 0
nchpl 144 3802 0 2173 63 0 63 63 0 8 0
uvmvnodes 80 2600 0 0 54 0 54 54 0 8 0
vnodes 216 2600 0 0 145 0 145 145 0 8 0
namei 1024 12423 0 12421 2 1 1 2 0 8 0
percpumem 16 46 0 4 1 0 1 1 0 8 0
kstatmem 264 30 0 8 2 0 2 2 0 8 0
scxspl 216 11586 0 11585 9 8 1 8 0 8 0
plimitpl 152 264 0 241 4 2 2 2 0 8 1
sigapl 424 1292 0 1240 7 0 7 7 0 8 0
futexpl 64 6614 0 6613 1 0 1 1 0 8 0
knotepl 120 177 0 0 6 1 5 6 0 8 0
kqueuepl 216 269 0 261 5 4 1 5 0 8 0
pipepl 320 344 0 316 6 3 3 6 0 8 0
fdescpl 496 1274 0 1241 7 1 6 6 0 8 0
filepl 152 6406 0 6172 18 6 12 16 0 8 2
lockfpl 104 62 0 60 1 0 1 1 0 8 0
lockfspl 48 27 0 25 1 0 1 1 0 8 0
sessionpl 144 27 0 11 1 0 1 1 0 8 0
pgrppl 48 126 0 110 1 0 1 1 0 8 0
ucredpl 104 603 0 585 1 0 1 1 0 8 0
zombiepl 144 1241 0 1240 1 0 1 1 0 8 0
processpl 1064 1292 0 1240 5 1 4 5 0 8 0
procpl 672 2738 0 2671 9 1 8 8 0 8 1
sosppl 168 19 0 19 3 3 0 1 0 8 0
sockpl 488 1754 0 1729 36 24 12 24 0 8 8
mcl64k 65536 6 0 0 1 0 1 1 0 8 0
mcl16k 16384 7 0 0 1 0 1 1 0 8 0
mcl12k 12288 8 0 0 1 0 1 1 0 8 0
mcl9k 9216 3 0 0 1 0 1 1 0 8 0
mcl8k 8192 13 0 0 2 0 2 2 0 8 0
mcl4k 4096 8 0 0 1 0 1 1 0 8 0
mcl2k2 2112 2 0 0 1 0 1 1 0 8 0
mcl2k 2048 367 0 0 45 0 45 45 0 8 0
mtagpl 96 2 0 0 1 0 1 1 0 8 0
mbufpl 256 472 0 0 27 0 27 27 0 8 0
bufpl 288 4925 0 126 343 0 343 343 0 8 0
anonpl 24 285826 0 273448 108 6 102 102 0 186 7
amapchunkpl 152 22494 0 21786 32 1 31 31 0 158 0
amappl16 200 4135 0 3828 31 0 31 31 0 8 14
amappl15 192 4 0 4 1 1 0 1 0 8 0
amappl14 184 140 0 128 1 0 1 1 0 8 0
amappl13 176 3 0 3 1 1 0 1 0 8 0
amappl12 168 433 0 432 1 0 1 1 0 8 0
amappl11 160 43 0 33 1 0 1 1 0 8 0
amappl10 152 56 0 43 1 0 1 1 0 8 0
amappl9 144 948 0 947 1 0 1 1 0 8 0
amappl8 136 186 0 132 2 0 2 2 0 8 0
amappl7 128 62 0 45 1 0 1 1 0 8 0
amappl6 120 298 0 283 2 1 1 2 0 8 0
amappl5 112 106 0 96 1 0 1 1 0 8 0
amappl4 104 505 0 481 1 0 1 1 0 8 0
amappl3 96 3070 0 3016 2 0 2 2 0 8 0
amappl2 88 1641 0 1568 3 1 2 3 0 8 0
amappl1 80 30111 0 29397 22 5 17 21 0 8 0
amappl 88 7727 0 7527 6 0 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 82 0 0 2 0 2 2 0 8 0
uaddrrnd 24 1274 0 1240 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1274 0 1240 1 0 1 1 0 8 0
vmmpekpl 168 14648 0 14580 4 0 4 4 0 8 0
vmmpepl 168 122657 0 120125 155 19 136 140 0 357 15
vmsppl 368 1273 0 1240 4 0 4 4 0 8 0
rwobjpl 56 36496 0 32440 63 1 62 62 0 8 0
pdppl 4096 2555 0 2480 143 62 81 93 0 8 6
pvpl 32 615144 0 596857 254 40 214 254 0 265 39
pmappl 248 1273 0 1240 4 1 3 3 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 801 0 73 21 0 21 21 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffffffff829bfff0) 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+0x21 kd_curproc sys/dev/kcov.c:577 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x21 sys/dev/kcov.c:148
__mp_lock(ffffffff82a10750) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82a10750) at __mp_lock+0x133 sys/kern/kern_lock.c:147
intr_handler(ffff80002131c2b0,ffff80000006ba00) 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(70) at cnputc+0x4b sys/dev/cons.c:218
db_putchar(70) at db_putchar+0x3fc sys/ddb/db_output.c:155
kprintf() at kprintf+0x6ac sys/kern/subr_prf.c:724
db_printf(ffffffff8262d69c) at db_printf+0x85 sys/kern/subr_prf.c:498
panic(ffffffff825a8718) at panic+0xd7 sys/kern/subr_prf.c:216
vop_generic_badop(ffff80002131c6d8) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133
end trace frame: 0xffff80002131c720, count: 0
ddb{0}> trace
x86_ipi_db(ffffffff829bfff0) 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+0x21 kd_curproc sys/dev/kcov.c:577 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x21 sys/dev/kcov.c:148
__mp_lock(ffffffff82a10750) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82a10750) at __mp_lock+0x133 sys/kern/kern_lock.c:147
intr_handler(ffff80002131c2b0,ffff80000006ba00) 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(70) at cnputc+0x4b sys/dev/cons.c:218
db_putchar(70) at db_putchar+0x3fc sys/ddb/db_output.c:155
kprintf() at kprintf+0x6ac sys/kern/subr_prf.c:724
db_printf(ffffffff8262d69c) at db_printf+0x85 sys/kern/subr_prf.c:498
panic(ffffffff825a8718) at panic+0xd7 sys/kern/subr_prf.c:216
vop_generic_badop(ffff80002131c6d8) at vop_generic_badop+0x1b sys/kern/vfs_default.c:133
VOP_STRATEGY(fffffd80754935f0,fffffd807b238240) at VOP_STRATEGY+0x9b sys/kern/vfs_vops.c:628
bwrite(fffffd807b238240) at bwrite+0x1f0 sys/kern/vfs_bio.c:760
VOP_BWRITE(fffffd807b238240) at VOP_BWRITE+0x4a sys/kern/vfs_vops.c:640
ufs_mkdir(ffff80002131c970) at ufs_mkdir+0x6b4 sys/ufs/ufs/ufs_vnops.c:1236
VOP_MKDIR(fffffd807129c520,ffff80002131cad0,ffff80002131cb00,ffff80002131ca00) at VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388
domkdirat(ffff8000ffff4540,ffffff9c,7f7ffffe8690,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3112
syscall(ffff80002131cc80) at syscall+0x438 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff80002131cc80) at syscall+0x438 sys/arch/amd64/amd64/trap.c:599
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffe8700, count: -22
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(ffffffff825b348f) at panic+0x177 sys/kern/subr_prf.c:198
__assert(ffffffff8262b17a,ffffffff82657db2,9eb,ffffffff825e88cb) at __assert+0x25 sys/kern/subr_prf.c:157
uvm_map_teardown(fffffd8066632018) at uvm_map_teardown+0x308 sys/uvm/uvm_map.c:2541
uvmspace_free(fffffd8066632018) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3513
reaper(ffff8000212337a8) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: 9
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff825b348f) at panic+0x177 sys/kern/subr_prf.c:198
__assert(ffffffff8262b17a,ffffffff82657db2,9eb,ffffffff825e88cb) at __assert+0x25 sys/kern/subr_prf.c:157
uvm_map_teardown(fffffd8066632018) at uvm_map_teardown+0x308 sys/uvm/uvm_map.c:2541
uvmspace_free(fffffd8066632018) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3513
reaper(ffff8000212337a8) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: -6