protection_fault: witness_checkorder

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: ab19a69ebe1d update libfido2 to 1.11.0, taking in just ove..
git tree: openbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1180dd57080000
kernel config: https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link: https://syzkaller.appspot.com/bug?extid=8a8a5c17abe6a3f3f106

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+8a8a5c...@syzkaller.appspotmail.com

����kernel: protection fault trap, code=0
Stopped at witness_checkorder+0x4f5: movl 0x10(%r14),%ecx
ddb{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
the kernel did not panic
ddb{1}> trace
witness_checkorder(fffffd806d58d400,9,0) at witness_checkorder+0x4f5 witness_lock_order_check sys/kern/subr_witness.c:2434 [inline]
witness_checkorder(fffffd806d58d400,9,0) at witness_checkorder+0x4f5 sys/kern/subr_witness.c:885
rw_enter(fffffd806d58d3f0,1) at rw_enter+0xd1 sys/kern/kern_rwlock.c:250
rwsleep(fffffd806d58d530,fffffd806d58d3f0,118,ffffffff82616c93,0) at rwsleep+0x100 sys/kern/kern_synch.c:314
sosend(fffffd806d58d3e8,0,ffff80002478a118,0,0,0) at sosend+0x76e sys/kern/uipc_socket.c:614
fifo_write(ffff80002478a060) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281
VOP_WRITE(fffffd806c789e98,ffff80002478a118,3,fffffd807f7d7340) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245
ktrwriteraw(ffff80002127d508,fffffd806c789e98,fffffd807f7d7340,ffff80002478a1e0,ffff80002478a1c0) at ktrwriteraw+0x15f sys/kern/kern_ktrace.c:660
ktrgenio(ffff80002127d508,18,0,ffff800000d15350,c) at ktrgenio+0x292 ktrwrite2 sys/kern/kern_ktrace.c:624 [inline]
ktrgenio(ffff80002127d508,18,0,ffff800000d15350,c) at ktrgenio+0x292 sys/kern/kern_ktrace.c:259
dofilereadv(ffff80002127d508,18,ffff80002478a358,0,ffff80002478a440) at dofilereadv+0x2e3 sys/kern/sys_generic.c:263
sys_read(ffff80002127d508,ffff80002478a3f0,ffff80002478a440) at sys_read+0x83 sys/kern/sys_generic.c:167
syscall(ffff80002478a4c0) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff80002478a4c0) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x2fb515740, count: -12
ddb{1}> show registers
rdi 0xffffffff
rsi 0xffffffff
rbp 0xffff800024789dd0
rbx 0xffffffff
rdx 0
rcx 0xc
rax 0xfffffd8002fb0000
r8 0xffffffff81f63300 uvm_map_inentry_pc
r9 0x1
r10 0x3160b35817dd43f1
r11 0x893bce4804bbb1f8
r12 0xfffffd8002f88300
r13 0xfffffd806d58d400
r14 0xdeafbeaddeafbead
r15 0xffffffff82adcc30 w_locklistdata+0x42820
rip 0xffffffff81974615 witness_checkorder+0x4f5
cs 0x8
rflags 0x10216 __ALIGN_SIZE+0xf216
rsp 0xffff800024789d20
ss 0x10
witness_checkorder+0x4f5: movl 0x10(%r14),%ecx
ddb{1}> show proc
PROC (syz-fuzzer) pid=205089 stat=onproc
flags process=2<EXEC> proc=4000001<INKTR,THREAD>
pri=24, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff80002127ca88,0xffff80002127cfd8
process=0xffff8000ffff71f0 user=0xffff800024785000, vmspace=0xfffffd806f281738
estcpu=1, cpticks=5, pctcpu=0.6
user=0, sys=0, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
77844 358874 62268 0 3 0x80 nanoslp syz-executor.3
77844 126543 62268 0 2 0x4000081 syz-executor.3
44629 3779 15731 -1 3 0x90 nanoslp syz-executor.5
44629 477068 15731 -1 3 0x4000090 fsleep syz-executor.5
44629 475224 15731 -1 3 0x4000090 fsleep syz-executor.5
44629 337249 15731 -1 3 0x4000090 fsleep syz-executor.5
52563 73219 54968 0 2 0x83 syz-executor.1
19257 519978 54968 0 3 0x82 nanoslp syz-executor.6
36588 234280 0 0 3 0x14200 acct acct
15731 217252 54968 0 3 0x82 nanoslp syz-executor.5
61938 80424 54968 0 3 0x82 piperd syz-executor.0
56402 84180 54968 0 2 0x83 syz-executor.4
62268 466732 54968 0 3 0x82 nanoslp syz-executor.3
59830 37832 0 0 3 0x14280 nfsidl nfsio
17399 318650 0 0 3 0x14280 nfsidl nfsio
56388 24497 0 0 3 0x14280 nfsidl nfsio
22611 436260 0 0 3 0x14280 nfsidl nfsio
89121 61183 0 0 3 0x14280 nfsidl nfsio
98943 74739 0 0 3 0x14280 nfsidl nfsio
23436 520709 0 0 3 0x14280 nfsidl nfsio
83196 307802 0 0 3 0x14280 nfsidl nfsio
40638 323391 0 0 3 0x14280 nfsidl nfsio
13315 8105 0 0 3 0x14280 nfsidl nfsio
61311 333643 0 0 3 0x14280 nfsidl nfsio
60065 18827 0 0 3 0x14280 nfsidl nfsio
35456 42203 0 0 3 0x14280 nfsidl nfsio
64331 387097 0 0 3 0x14280 nfsidl nfsio
73506 487844 0 0 3 0x14280 nfsidl nfsio
79609 27000 0 0 3 0x14280 nfsidl nfsio
29589 78340 0 0 3 0x14280 nfsidl nfsio
50079 351706 0 0 3 0x14280 nfsidl nfsio
70090 268288 0 0 3 0x14280 nfsidl nfsio
46122 7000 0 0 3 0x14280 nfsidl nfsio
13682 265477 1 0 3 0x100083 ttyin getty
35726 251849 54968 0 3 0x82 piperd syz-executor.2
97098 189359 0 0 3 0x14200 bored sosplice
54968 278269 52688 0 3 0x82 thrsleep syz-fuzzer
54968 252966 52688 0 3 0x4000082 nanoslp syz-fuzzer
54968 27142 52688 0 3 0x4000082 thrsleep syz-fuzzer
54968 58873 52688 0 3 0x4000082 wait syz-fuzzer
54968 109390 52688 0 2 0x4000002 syz-fuzzer
54968 24034 52688 0 3 0x4000082 wait syz-fuzzer
54968 390782 52688 0 3 0x4000082 thrsleep syz-fuzzer
54968 212280 52688 0 3 0x4000082 thrsleep syz-fuzzer
54968 502383 52688 0 3 0x4000082 wait syz-fuzzer
*54968 205089 52688 0 7 0x4000003 syz-fuzzer
54968 503072 52688 0 3 0x4000082 thrsleep syz-fuzzer
54968 337869 52688 0 2 0x4000083 syz-fuzzer
54968 310001 52688 0 3 0x4000082 wait syz-fuzzer
54968 343092 52688 0 3 0x4000082 wait syz-fuzzer
54968 103583 52688 0 3 0x4000082 wait syz-fuzzer
54968 296150 52688 0 3 0x4000082 wait syz-fuzzer
52688 253197 18360 0 3 0x10008a sigsusp ksh
18360 303197 22397 0 3 0x9a kqread sshd
22397 490187 1 0 3 0x88 kqread sshd
49262 325413 62526 74 3 0x1100092 bpf pflogd
62526 201278 1 0 3 0x80 netio pflogd
91134 242654 54448 73 3 0x1100010 ffs_fsync syslogd
54448 168930 1 0 3 0x100082 netio syslogd
65399 36679 1 0 3 0x100080 kqread resolvd
38192 15866 11411 77 3 0x100092 kqread dhcpleased
24498 2317 11411 77 3 0x100092 kqread dhcpleased
11411 481907 1 0 3 0x80 kqread dhcpleased
80568 75118 0 0 3 0x14200 bored smr
16125 149004 0 0 2 0x14200 zerothread
34750 254683 0 0 3 0x14200 aiodoned aiodoned
72286 125253 0 0 3 0x14200 syncer update
66213 466056 0 0 3 0x14200 cleaner cleaner
1218 386473 0 0 7 0x14200 reaper
97919 485743 0 0 3 0x14200 pgdaemon pagedaemon
89059 372890 0 0 3 0x14200 bored viomb
40266 213902 0 0 3 0x40014200 acpi0 acpi0
67505 79465 0 0 3 0x40014200 idle1
9494 168796 0 0 3 0x14200 bored softnet
74281 382360 0 0 3 0x14200 bored softnet
43608 384084 0 0 3 0x14200 bored softnet
88751 323402 0 0 3 0x14200 bored softnet
50723 520443 0 0 3 0x14200 bored systqmp
99131 468215 0 0 3 0x14200 bored systq
67093 42980 0 0 3 0x40014200 bored softclock
33186 229977 0 0 3 0x40014200 idle0
1 2103 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
CPU 0:
exclusive sched_lock &sched_lock r = 0 (0xffffffff82a31cf0)
#0 witness_lock+0x44d
#1 wakeup_n+0x37
#2 uvm_pmr_freepageq+0x292 sys/uvm/uvm_pmemrange.c:1352
#3 amap_wipeout+0x1ff sys/uvm/uvm_amap.c:523
#4 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1351
#5 uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2541
#6 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436
#7 reaper+0x19a sys/kern/kern_exit.c:448
#8 proc_trampoline+0x1c
exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff82b9f2a8)
#0 witness_lock+0x44d
#1 mtx_enter_try+0x100
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 uvm_pmr_freepageq+0xcc sys/uvm/uvm_pmemrange.c:1333
#4 amap_wipeout+0x1ff sys/uvm/uvm_amap.c:523
#5 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1351
#6 uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2541
#7 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436
#8 reaper+0x19a sys/kern/kern_exit.c:448
#9 proc_trampoline+0x1c
Process 54968 (syz-fuzzer) thread 0xffff80002127d508 (205089)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82b6b108)
#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 rwsleep+0xd5 sys/kern/kern_synch.c:311
#5 sosend+0x76e sys/kern/uipc_socket.c:614
#6 fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281
#7 VOP_WRITE+0xbf sys/kern/vfs_vops.c:245
#8 ktrwriteraw+0x15f sys/kern/kern_ktrace.c:660
#9 ktrgenio+0x292 ktrwrite2 sys/kern/kern_ktrace.c:624 [inline]
#9 ktrgenio+0x292 sys/kern/kern_ktrace.c:259
#10 dofilereadv+0x2e3 sys/kern/sys_generic.c:263
#11 sys_read+0x83 sys/kern/sys_generic.c:167
#12 syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#12 syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
#13 Xsyscall+0x128
Process 91134 (syslogd) thread 0xffff800021279cf0 (242654)
exclusive rrwlock inode r = 0 (0xfffffd806e7d24e0)
#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 sys_fsync+0xf5 sys/kern/vfs_syscalls.c:2935
#6 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#6 syscall+0x435 sys/arch/amd64/amd64/trap.c:585
#7 Xsyscall+0x128
Process 1218 (reaper) thread 0xffff800021233508 (386473)
exclusive rwlock amaplk r = 0 (0xfffffd8067a32d70)
#0 witness_lock+0x44d
#1 amap_unref+0x2b sys/uvm/uvm_amap.c:1363
#2 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1351
#3 uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2541
#4 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436
#5 reaper+0x19a sys/kern/kern_exit.c:448
#6 proc_trampoline+0x1c
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10225 6563K 7002K 78643K 16792 0
pcb 13 14K 16K 78643K 656 0
rtable 177 15K 21K 78643K 994 0
ifaddr 88 17K 20K 78643K 427 0
sysctl 2 0K 0K 78643K 2 0
counters 54 35K 35K 78643K 144 0
ioctlops 0 0K 4K 78643K 2954 0
iov 0 0K 32K 78643K 777 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1398 87K 88K 78643K 3286 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 45 0
VM map 2 1K 1K 78643K 2 0
sem 12 1K 1K 78643K 366 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 11 37K 85K 78643K 3865 0
sigio 0 0K 0K 78643K 64 0
proc 71 103K 140K 78643K 1073 0
subproc 91 5K 6K 78643K 273 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 216 0
in_multi 64 4K 6K 78643K 314 0
ether_multi 1 0K 0K 78643K 12 0
mrt 1 0K 0K 78643K 8 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 211 943K 943K 78643K 211 0
exec 0 0K 2K 78643K 1555 0
pfkey data 0 0K 1K 78643K 5 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 62K 78643K 8 0
UVM amap 312 305K 314K 78643K 24686 0
UVM aobj 131 4K 4K 78643K 134 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 123 0
NDP 14 0K 2K 78643K 100 0
temp 145 4722K 5746K 78643K 44384 0
kqueue 12 18K 26K 78643K 298 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 120 440 0 437 10 5 5 5 0 8 4
rtentry 112 285 0 213 4 0 4 4 0 8 0
unpcb 144 2403 0 2386 32 23 9 10 0 8 8
syncache 296 33 0 33 7 6 1 1 0 8 1
tcpqe 32 551 0 551 5 5 0 2 0 8 0
tcpcb 768 5783 0 5743 140 130 10 29 0 8 5
arp 120 46 0 33 1 0 1 1 0 8 0
inpcb 368 8013 0 8004 75 65 10 19 0 8 8
nd6 48 67 0 52 1 0 1 1 0 8 0
pkpcb 40 21 0 21 3 3 0 1 0 8 0
kcovpl 48 21 0 14 1 0 1 1 0 8 0
ppxss 1256 24 0 24 6 5 1 1 0 8 1
pfstscr 40 77 0 77 4 4 0 1 0 8 0
pffrag 232 44 0 40 3 2 1 1 0 482 0
pffrnode 88 44 0 40 3 2 1 1 0 8 0
pffrent 40 94 0 90 3 2 1 1 0 8 0
pfosfp 40 1431 0 1007 5 0 5 5 0 8 0
pfosfpen 112 1431 0 716 21 0 21 21 0 8 0
pfrktable 1344 63 0 63 2 2 0 2 0 8 0
pfanchor 1280 290 0 57 20 0 20 20 0 8 0
pftag 88 7 0 5 1 0 1 1 0 8 0
pfstitem 24 50 0 48 1 0 1 1 0 8 0
pfstkey 120 204 0 202 1 0 1 1 0 8 0
pfstate 336 127 0 125 3 2 1 3 0 8 0
pfrule 1360 175 0 174 4 3 1 3 0 8 0
rttmr 136 2 0 2 1 1 0 1 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 1296 0 983 37 12 25 30 0 8 2
art_table 32 1298 0 983 4 0 4 4 0 8 0
art_node 16 284 0 222 1 0 1 1 0 8 0
sysvmsgpl 40 5 0 0 1 0 1 1 0 8 0
semupl 112 3 0 3 1 1 0 1 0 8 0
semapl 112 364 0 354 1 0 1 1 0 8 0
shmpl 112 131 0 3 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 6597 0 5153 91 0 91 91 0 8 0
ffsino 272 6597 0 5153 97 0 97 97 0 8 0
nchpl 144 11677 0 10036 63 0 63 63 0 8 0
rtmask 32 3 0 3 1 0 1 1 0 8 1
uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0
vnodes 216 5926 0 0 330 0 330 330 0 8 0
namei 1024 41843 0 41843 3 2 1 2 0 8 1
percpumem 16 84 0 45 1 0 1 1 0 8 0
vcpupl 2048 79 0 0 10 0 10 10 0 8 0
vmpool 568 83 0 4 6 0 6 6 0 8 0
pfiaddrpl 120 25 0 25 1 1 0 1 0 8 0
kstatmem 264 110 0 82 3 0 3 3 0 8 0
scxspl 216 31855 0 31854 13 12 1 8 0 8 0
plimitpl 152 508 0 494 1 0 1 1 0 8 0
sigapl 424 4166 0 4102 10 2 8 8 0 8 0
futexpl 64 33579 0 33576 1 0 1 1 0 8 0
knotepl 120 482 0 0 13 0 13 13 0 8 0
kqueuepl 216 707 0 699 13 8 5 5 0 8 4
pipepl 320 835 0 810 24 18 6 8 0 8 3
fdescpl 496 4127 0 4103 6 2 4 5 0 8 0
filepl 152 29191 0 28971 57 39 18 19 0 8 8
lockfpl 104 1121 0 1119 4 2 2 2 0 8 1
lockfspl 48 372 0 370 1 0 1 1 0 8 0
sessionpl 144 39 0 23 1 0 1 1 0 8 0
pgrppl 48 56 0 40 1 0 1 1 0 8 0
ucredpl 104 3833 0 3820 1 0 1 1 0 8 0
zombiepl 144 4103 0 4102 3 2 1 1 0 8 0
processpl 1064 4166 0 4102 5 0 5 5 0 8 0
procpl 672 11316 0 11233 15 6 9 10 0 8 0
srpgc 96 30 0 30 6 5 1 1 0 8 1
sosppl 168 27 0 27 6 5 1 1 0 8 1
sockpl 488 10877 0 10848 182 157 25 35 0 8 20
mcl64k 65536 12 0 0 2 0 2 2 0 8 0
mcl16k 16384 13 0 0 2 0 2 2 0 8 0
mcl12k 12288 19 0 0 2 0 2 2 0 8 0
mcl9k 9216 6 0 0 1 0 1 1 0 8 0
mcl8k 8192 49 0 0 6 2 4 6 0 8 0
mcl4k 4096 17 0 0 3 0 3 3 0 8 0
mcl2k2 2112 7 0 0 1 0 1 1 0 8 0
mcl2k 2048 518 0 0 64 0 64 64 0 8 0
mtagpl 96 348 0 0 6 0 6 6 0 8 0
mbufpl 256 925 0 0 56 1 55 55 0 8 0
bufpl 288 8975 0 2640 453 0 453 453 0 8 0
anonpl 24 817031 0 802533 152 33 119 135 0 186 0
amapchunkpl 152 69548 0 68858 46 13 33 37 0 158 0
amappl16 200 11404 0 10840 69 32 37 43 0 8 5
amappl15 192 658 0 651 1 0 1 1 0 8 0
amappl14 184 155 0 152 1 0 1 1 0 8 0
amappl13 176 1153 0 1150 1 0 1 1 0 8 0
amappl12 168 828 0 822 1 0 1 1 0 8 0
amappl11 160 379 0 360 1 0 1 1 0 8 0
amappl10 152 372 0 366 1 0 1 1 0 8 0
amappl9 144 545 0 540 1 0 1 1 0 8 0
amappl8 136 1456 0 1382 3 0 3 3 0 8 0
amappl7 128 795 0 771 1 0 1 1 0 8 0
amappl6 120 338 0 325 2 1 1 2 0 8 0
amappl5 112 3371 0 3351 1 0 1 1 0 8 0
amappl4 104 1780 0 1753 2 1 1 2 0 8 0
amappl3 96 12730 0 12680 3 1 2 2 0 8 0
amappl2 88 2030 0 1989 3 2 1 2 0 8 0
amappl1 80 103977 0 103369 24 8 16 20 0 8 0
amappl 88 23882 0 23696 7 2 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 72 133 0 3 3 0 3 3 0 8 0
uaddrrnd 24 4210 0 4107 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 4210 0 4107 1 0 1 1 0 8 0
vmmpekpl 168 36395 0 36315 4 0 4 4 0 8 0
vmmpepl 168 409068 0 406459 183 45 138 147 0 357 0
vmsppl 368 4209 0 4106 12 2 10 10 0 8 0
rwobjpl 56 107450 0 99797 120 8 112 112 0 8 0
pdppl 4096 8427 0 8291 374 226 148 148 0 8 12
pvpl 32 1644296 0 1625770 309 117 192 259 0 265 0
pmappl 248 4209 0 4106 8 1 7 7 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 1306 0 322 29 0 29 29 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
ddb{0}> trace
x86_ipi_db(ffffffff82940ff0) 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_cmp4(3ef7c1,3ef7c1) at __sanitizer_cov_trace_cmp4+0x2a kd_curproc sys/dev/kcov.c:577 [inline]
__sanitizer_cov_trace_cmp4(3ef7c1,3ef7c1) at __sanitizer_cov_trace_cmp4+0x2a sys/dev/kcov.c:201
__mp_lock(ffffffff82a31ae8) at __mp_lock+0x62 __mp_lock_held sys/kern/kern_lock.c:236 [inline]
__mp_lock(ffffffff82a31ae8) at __mp_lock+0x62 sys/kern/kern_lock.c:137
wakeup_n(ffffffff82b9f100,ffffffff) at wakeup_n+0xc5 wakeup_proc sys/kern/kern_synch.c:478 [inline]
wakeup_n(ffffffff82b9f100,ffffffff) at wakeup_n+0xc5 sys/kern/kern_synch.c:551
uvm_pmr_freepageq(ffff8000212395c8) at uvm_pmr_freepageq+0x292 sys/uvm/uvm_pmemrange.c:1352
amap_wipeout(fffffd8068afa1a0) at amap_wipeout+0x1ff sys/uvm/uvm_amap.c:523
uvm_unmap_detach(ffff800021239690,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1351
uvm_map_teardown(fffffd807effd2e0) at uvm_map_teardown+0x262 sys/uvm/uvm_map.c:2541
uvmspace_free(fffffd807effd2e0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3436
reaper(ffff800021233508) at reaper+0x19a sys/kern/kern_exit.c:448
end trace frame: 0x0, count: -12
ddb{0}> machine ddbcpu 1
Stopped at witness_checkorder+0x4f5: movl 0x10(%r14),%ecx
ddb{1}> trace
witness_checkorder(fffffd806d58d400,9,0) at witness_checkorder+0x4f5 witness_lock_order_check sys/kern/subr_witness.c:2434 [inline]
witness_checkorder(fffffd806d58d400,9,0) at witness_checkorder+0x4f5 sys/kern/subr_witness.c:885
rw_enter(fffffd806d58d3f0,1) at rw_enter+0xd1 sys/kern/kern_rwlock.c:250
rwsleep(fffffd806d58d530,fffffd806d58d3f0,118,ffffffff82616c93,0) at rwsleep+0x100 sys/kern/kern_synch.c:314
sosend(fffffd806d58d3e8,0,ffff80002478a118,0,0,0) at sosend+0x76e sys/kern/uipc_socket.c:614
fifo_write(ffff80002478a060) at fifo_write+0x7c sys/miscfs/fifofs/fifo_vnops.c:281
VOP_WRITE(fffffd806c789e98,ffff80002478a118,3,fffffd807f7d7340) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245
ktrwriteraw(ffff80002127d508,fffffd806c789e98,fffffd807f7d7340,ffff80002478a1e0,ffff80002478a1c0) at ktrwriteraw+0x15f sys/kern/kern_ktrace.c:660
ktrgenio(ffff80002127d508,18,0,ffff800000d15350,c) at ktrgenio+0x292 ktrwrite2 sys/kern/kern_ktrace.c:624 [inline]
ktrgenio(ffff80002127d508,18,0,ffff800000d15350,c) at ktrgenio+0x292 sys/kern/kern_ktrace.c:259
dofilereadv(ffff80002127d508,18,ffff80002478a358,0,ffff80002478a440) at dofilereadv+0x2e3 sys/kern/sys_generic.c:263
sys_read(ffff80002127d508,ffff80002478a3f0,ffff80002478a440) at sys_read+0x83 sys/kern/sys_generic.c:167
syscall(ffff80002478a4c0) at syscall+0x4c3 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff80002478a4c0) at syscall+0x4c3 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x2fb515740, count: -12


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Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.