panic: acquiring blockable sleep lock with spinlock or critical section held (rwlock) solock
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff823e5094) at panic+0x15e sys/kern/subr_prf.c:218
witness_checkorder(fffffd806e7ae990,9,0) at witness_checkorder+0x1188 sys/kern/subr_witness.c:833
rw_enter_write(fffffd806e7ae980) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
solock(fffffd806e7ae978) at solock+0x97 sys/kern/uipc_socket2.c:299
rtm_senddesync_timer(fffffd806e7ae978) at rtm_senddesync_timer+0x1a sys/net/rtsock.c:454
timeout_run(fffffd806f5eacc0) at timeout_run+0xcc sys/kern/kern_timeout.c:674
softclock_process_tick_timeout(fffffd806f5eacc0,0) at softclock_process_tick_timeout+0x196 sys/kern/kern_timeout.c:721
softclock(0) at softclock+0x11a sys/kern/kern_timeout.c:752
softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x1f
acpicpu_idle() at acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206
sched_idle(ffffffff826ceff0) at sched_idle+0x417 sys/kern/kern_sched.c:178
end trace frame: 0x0, count: 2
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
acquiring blockable sleep lock with spinlock or critical section held (rwlock) solock
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff823e5094) at panic+0x15e sys/kern/subr_prf.c:218
witness_checkorder(fffffd806e7ae990,9,0) at witness_checkorder+0x1188 sys/kern/subr_witness.c:833
rw_enter_write(fffffd806e7ae980) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
solock(fffffd806e7ae978) at solock+0x97 sys/kern/uipc_socket2.c:299
rtm_senddesync_timer(fffffd806e7ae978) at rtm_senddesync_timer+0x1a sys/net/rtsock.c:454
timeout_run(fffffd806f5eacc0) at timeout_run+0xcc sys/kern/kern_timeout.c:674
softclock_process_tick_timeout(fffffd806f5eacc0,0) at softclock_process_tick_timeout+0x196 sys/kern/kern_timeout.c:721
softclock(0) at softclock+0x11a sys/kern/kern_timeout.c:752
softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x1f
acpicpu_idle() at acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206
sched_idle(ffffffff826ceff0) at sched_idle+0x417 sys/kern/kern_sched.c:178
end trace frame: 0x0, count: -13
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff80002116f2b0
rbx 0xffff80002116f2c0
rdx 0x8b
rcx 0x2
rax 0x1
r8 0xffffffff81c643c5 kprintf+0x145
r9 0x1
r10 0x5cc7123f99afadc3
r11 0xe311def80f1586d1
r12 0x3000000008
r13 0xffff80002116f360
r14 0x100
r15 0x1
rip 0xffffffff81bca908 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80002116f2a0
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{0}> show proc
PROC (idle0) pid=168646 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=40000200<SYSTEM,CPUPEG>
pri=0, usrpri=50, nice=20
forw=0xf481e9a34b046c3c, list=0xffff800021168540,0xffff8000211682b0
process=0xffff8000fffff2a0 user=0xffff80002116a000, vmspace=0xffffffff82914f58
estcpu=0, cpticks=3328, pctcpu=0.0
user=0, sys=0, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
97063 346355 83246 0 3 0x82 msgwait syz-executor3018
83246 188003 56641 0 3 0x10008a sigsusp ksh
56641 309159 44396 0 3 0x92 select sshd
65423 281098 1 0 3 0x100083 ttyin getty
44396 100409 1 0 3 0x80 select sshd
97543 23055 14389 73 3 0x100090 kqread syslogd
14389 4984 1 0 3 0x100082 netio syslogd
94015 37359 1 77 3 0x100090 poll dhclient
52022 128125 1 0 3 0x80 poll dhclient
79434 310923 0 0 3 0x14200 bored smr
78056 149471 0 0 3 0x14200 pgzero zerothread
47499 69030 0 0 3 0x14200 aiodoned aiodoned
34147 9873 0 0 3 0x14200 syncer update
44082 72676 0 0 3 0x14200 cleaner cleaner
66860 234816 0 0 3 0x14200 reaper reaper
58815 72721 0 0 3 0x14200 pgdaemon pagedaemon
17078 193614 0 0 3 0x14200 bored crynlk
5467 348031 0 0 3 0x14200 bored crypto
81361 356728 0 0 3 0x14200 bored viomb
63496 214254 0 0 3 0x40014200 acpi0 acpi0
38275 60738 0 0 7 0x40014200 idle1
72094 351429 0 0 3 0x14200 bored softnet
42911 1261 0 0 3 0x14200 bored systqmp
18340 210093 0 0 3 0x14200 bored systq
87168 133344 0 0 3 0x40014200 bored softclock
*60102 168646 0 0 7 0x40014200 idle0
1 289109 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
CPU 0:
shared mutex timeout r = 0 (0xffffffff82721dc8)
#0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182
#1 timeout_run+0xb7 sys/kern/kern_timeout.c:670
#2 softclock_process_tick_timeout+0x196 sys/kern/kern_timeout.c:721
#3 softclock+0x11a sys/kern/kern_timeout.c:752
#4 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
#5 Xsoftclock+0x1f
#6 acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206
#7 sched_idle+0x417 sys/kern/kern_sched.c:178
#8 proc_trampoline+0x1c
Process 60102 (idle0) thread 0xffff800021168000 (168646)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8290dfb0)
#0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182
#1 softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:90
#2 Xsoftclock+0x1f
#3 acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206
#4 sched_idle+0x417 sys/kern/kern_sched.c:178
#5 proc_trampoline+0x1c
shared mutex timeout r = 0 (0xffffffff82721dc8)
#0 witness_lock+0x4b0 stacktrace_save sys/sys/stacktrace.h:36 [inline]
#0 witness_lock+0x4b0 sys/kern/subr_witness.c:1182
#1 timeout_run+0xb7 sys/kern/kern_timeout.c:670
#2 softclock_process_tick_timeout+0x196 sys/kern/kern_timeout.c:721
#3 softclock+0x11a sys/kern/kern_timeout.c:752
#4 softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
#5 Xsoftclock+0x1f
#6 acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206
#7 sched_idle+0x417 sys/kern/kern_sched.c:178
#8 proc_trampoline+0x1c
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9469 6344K 6345K 78643K 10559 0
pcb 13 8K 8K 78643K 13 0
rtable 61 2K 2K 78643K 113 0
ifaddr 24 7K 7K 78643K 24 0
counters 40 33K 33K 78643K 40 0
ioctlops 0 0K 2K 78643K 13 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 1 0
vnodes 1182 74K 74K 78643K 1187 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 1K 78643K 2 0
VM map 2 1K 1K 78643K 2 0
sem 2 0K 0K 78643K 2 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12598 0
file desc 1 0K 0K 78643K 1 0
proc 47 50K 58K 78643K 274 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 11 0K 0K 78643K 11 0
ether_multi 1 0K 0K 78643K 1 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 19 95K 95K 78643K 19 0
exec 0 0K 2K 78643K 259 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 56 2K 4K 78643K 1167 0
UVM aobj 3 2K 2K 78643K 3 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
NDP 3 0K 0K 78643K 3 0
temp 19 3965K 4029K 78643K 1436 0
kqueue 2 2K 2K 78643K 2 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
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 120 16 0 13 1 0 1 1 0 8 0
rtentry 112 23 0 1 1 0 1 1 0 8 0
unpcb 120 27 0 19 1 0 1 1 0 8 0
syncache 296 5 0 5 2 1 1 1 0 8 1
tcpcb 736 8 0 5 1 0 1 1 0 8 0
arp 64 2 0 0 1 0 1 1 0 8 0
inpcb 304 21 0 16 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 95 0 0 6 0 6 6 0 8 0
art_table 32 96 0 0 1 0 1 1 0 8 0
art_node 16 22 0 2 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1391 0 15 86 0 86 86 0 8 0
ffsino 272 1391 0 15 92 0 92 92 0 8 0
nchpl 144 1567 0 31 57 0 57 57 0 8 0
uvmvnodes 72 1400 0 0 26 0 26 26 0 8 0
vnodes 224 1400 0 0 83 0 83 83 0 8 0
namei 1024 3486 0 3486 2 1 1 1 0 8 1
percpumem 16 31 0 0 1 0 1 1 0 8 0
scxspl 216 3346 0 3346 2 1 1 2 0 8 1
plimitpl 152 13 0 8 1 0 1 1 0 8 0
sigapl 424 192 0 165 4 0 4 4 0 8 0
knotepl 112 5 0 0 1 0 1 1 0 8 0
kqueuepl 168 1 0 0 1 0 1 1 0 8 0
pipepl 336 57 0 53 2 1 1 1 0 8 0
fdescpl 496 176 0 165 2 0 2 2 0 8 0
filepl 152 822 0 779 2 0 2 2 0 8 0
lockfpl 104 5 0 4 1 0 1 1 0 8 0
lockfspl 48 3 0 2 1 0 1 1 0 8 0
sessionpl 144 17 0 9 1 0 1 1 0 8 0
pgrppl 48 17 0 9 1 0 1 1 0 8 0
ucredpl 96 57 0 50 1 0 1 1 0 8 0
zombiepl 144 165 0 165 2 1 1 1 0 8 1
processpl 1080 192 0 165 3 1 2 3 0 8 0
procpl 672 192 0 165 3 0 3 3 0 8 0
sockpl 480 64 0 48 4 1 3 3 0 8 0
mcl4k 4096 3 0 0 1 0 1 1 0 8 0
mcl2k 2048 80 0 0 10 0 10 10 0 8 0
mtagpl 96 1 0 0 1 0 1 1 0 8 0
mbufpl 256 106 0 0 7 0 7 7 0 8 0
bufpl 280 1922 0 80 132 0 132 132 0 8 0
anonpl 24 25328 0 23667 13 2 11 12 0 186 0
amapchunkpl 152 2244 0 2146 5 0 5 5 0 158 0
amappl16 200 25 0 24 2 1 1 1 0 8 0
amappl15 192 44 0 38 1 0 1 1 0 8 0
amappl13 176 12 0 11 2 1 1 1 0 8 0
amappl12 168 22 0 19 1 0 1 1 0 8 0
amappl11 160 42 0 35 1 0 1 1 0 8 0
amappl10 152 8 0 5 1 0 1 1 0 8 0
amappl9 144 232 0 232 2 1 1 1 0 8 1
amappl8 136 203 0 201 1 0 1 1 0 8 0
amappl7 128 30 0 27 1 0 1 1 0 8 0
amappl6 120 74 0 65 1 0 1 1 0 8 0
amappl5 112 130 0 123 1 0 1 1 0 8 0
amappl4 104 406 0 386 1 0 1 1 0 8 0
amappl3 96 37 0 32 1 0 1 1 0 8 0
amappl2 88 306 0 269 1 0 1 1 0 8 0
amappl1 80 5895 0 5576 9 1 8 8 0 8 0
amappl 88 995 0 952 2 0 2 2 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 64 2 0 0 1 0 1 1 0 8 0
uaddrrnd 24 176 0 165 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 176 0 165 1 0 1 1 0 8 0
vmmpekpl 168 5148 0 5134 1 0 1 1 0 8 0
vmmpepl 168 17427 0 16741 41 7 34 35 0 357 3
vmsppl 368 175 0 165 2 0 2 2 0 8 0
rwobjpl 56 5428 0 4993 8 1 7 7 0 8 0
pdppl 4096 359 0 330 45 16 29 35 0 8 0
pvpl 32 85266 0 82022 35 5 30 30 0 265 2
pmappl 232 175 0 165 1 0 1 1 0 8 0
extentpl 40 58 0 40 1 0 1 1 0 8 0
phpool 112 261 0 20 8 0 8 8 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
panic(ffffffff823e5094) at panic+0x15e sys/kern/subr_prf.c:218
witness_checkorder(fffffd806e7ae990,9,0) at witness_checkorder+0x1188 sys/kern/subr_witness.c:833
rw_enter_write(fffffd806e7ae980) at rw_enter_write+0x5b sys/kern/kern_rwlock.c:128
solock(fffffd806e7ae978) at solock+0x97 sys/kern/uipc_socket2.c:299
rtm_senddesync_timer(fffffd806e7ae978) at rtm_senddesync_timer+0x1a sys/net/rtsock.c:454
timeout_run(fffffd806f5eacc0) at timeout_run+0xcc sys/kern/kern_timeout.c:674
softclock_process_tick_timeout(fffffd806f5eacc0,0) at softclock_process_tick_timeout+0x196 sys/kern/kern_timeout.c:721
softclock(0) at softclock+0x11a sys/kern/kern_timeout.c:752
softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x1f
acpicpu_idle() at acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206
sched_idle(ffffffff826ceff0) at sched_idle+0x417 sys/kern/kern_sched.c:178
end trace frame: 0x0, count: -13
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffff800020d58ff0) 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
acpicpu_idle() at acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800020d58ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178
end trace frame: 0x0, count: 10
ddb{1}> trace
x86_ipi_db(ffff800020d58ff0) 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
acpicpu_idle() at acpicpu_idle+0x2eb sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800020d58ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178
end trace frame: 0x0, count: -5
ddb{1}>