panic: assertwaitok: non-zero mutex count: 1
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*245025 41632 0 0x2 0 0 syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830425c6) at panic+0x1cf sys/kern/subr_prf.c:198
assertwaitok() at assertwaitok+0x16f sys/kern/subr_xxx.c:163
mi_switch() at mi_switch+0x2b6 sys/kern/sched_bsd.c:412
yield() at yield+0x61 sys/kern/sched_bsd.c:320
pool_get(ffffffff834dae78,1) at pool_get+0x1e9 sys/kern/subr_pool.c:589
uvm_mapent_alloc(ffffffff835b1338,1323) at uvm_mapent_alloc+0x3aa
uvm_map(ffffffff835b1338,ffff80002a53fa30,6000,0,ffffffffffffffff,0,f5eb41124920cfd) at uvm_map+0x3b7
km_alloc(6000,ffffffff83247690,ffffffff8328d508,ffffffff8328d580) at km_alloc+0x20d sys/uvm/uvm_km.c:748
fork1(ffff80002a4b0f40,1,ffffffff8239fb20,0,ffff80002a53fb80,0) at fork1+0x30b sys/kern/kern_fork.c:393
syscall(ffff80002a53fc30) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7145d6c1c030, count: 3
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>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
*cpu0: assertwaitok: non-zero mutex count: 1
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830425c6) at panic+0x1cf sys/kern/subr_prf.c:198
assertwaitok() at assertwaitok+0x16f sys/kern/subr_xxx.c:163
mi_switch() at mi_switch+0x2b6 sys/kern/sched_bsd.c:412
yield() at yield+0x61 sys/kern/sched_bsd.c:320
pool_get(ffffffff834dae78,1) at pool_get+0x1e9 sys/kern/subr_pool.c:589
uvm_mapent_alloc(ffffffff835b1338,1323) at uvm_mapent_alloc+0x3aa
uvm_map(ffffffff835b1338,ffff80002a53fa30,6000,0,ffffffffffffffff,0,f5eb41124920cfd) at uvm_map+0x3b7
km_alloc(6000,ffffffff83247690,ffffffff8328d508,ffffffff8328d580) at km_alloc+0x20d sys/uvm/uvm_km.c:748
fork1(ffff80002a4b0f40,1,ffffffff8239fb20,0,ffff80002a53fb80,0) at fork1+0x30b sys/kern/kern_fork.c:393
syscall(ffff80002a53fc30) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7145d6c1c030, count: -12
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80002a53f6e0
rbx 0
rdx 0
rcx 0
rax 0xffff80002a4b0f40
r8 0x101010101010101
r9 0x8080808080808080
r10 0xeea0485228565c15
r11 0x185bd21b54c6979b
r12 0
r13 0
r14 0
r15 0x1
rip 0xffffffff81e36145 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80002a53f6d0
ss 0
db_enter+0x25: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor) tid=245025 pid=41632 tcnt=1 stat=onproc
flags process=2<EXEC> proc=0
runpri=50, usrpri=86, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002a4b0520,0xffff80002a4b0cc8
process=0xffff8000ffffa698 user=0xffff80002a53a000, vmspace=0xfffffd806fc82b08
estcpu=36, cpticks=1, pctcpu=0.4, user=3, sys=14, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
83661 312098 95991 60929 3 0x10 vmmaplk syz-executor
83661 401061 95991 60929 3 0x4000010 vmmaplk syz-executor
83661 282180 95991 60929 2 0x4000010 syz-executor
96464 435747 42450 0 3 0x80 fsleep syz-executor
96464 301910 42450 0 2 0x4000000 syz-executor
18641 234640 86519 0 3 0x80 fsleep syz-executor
18641 424477 86519 0 3 0x4000080 kqpoll syz-executor
13546 369538 9358 0 3 0x80 fsleep syz-executor
13546 71972 9358 0 3 0x4000080 fsleep syz-executor
13546 146016 9358 0 3 0x4000080 kqsel syz-executor
13546 344307 9358 0 3 0x4000080 fsleep syz-executor
42450 226563 74141 0 3 0x82 nanoslp syz-executor
80244 487561 74141 0 2 0x2 syz-executor
9358 358837 74141 0 3 0x82 nanoslp syz-executor
42149 457349 0 0 3 0x14200 bored sosplice
77038 388650 74141 0 3 0x82 nanoslp syz-executor
86519 204784 74141 0 3 0x82 nanoslp syz-executor
*41632 245025 74141 0 7 0x2 syz-executor
95991 452202 74141 0 3 0x82 nanoslp syz-executor
2071 201922 74141 0 3 0x82 wait syz-executor
74141 170518 95204 0 2 0x2 syz-executor
95204 469615 92601 0 3 0x10008a sigsusp ksh
92601 509185 94512 0 3 0x98 kqread sshd-session
94512 42605 1 0 3 0x92 kqread sshd-session
3425 193117 1 0 3 0x100083 ttyin getty
6537 439388 80481 73 3 0x1100090 kqread syslogd
80481 507564 1 0 3 0x100082 sbwait syslogd
9516 107726 1 0 3 0x100080 kqread resolvd
24135 214467 57199 77 3 0x100092 kqread dhcpleased
72104 465791 57199 77 3 0x100092 kqread dhcpleased
57199 152667 1 0 3 0x80 kqread dhcpleased
49331 408801 0 0 3 0x14200 bored smr
40667 337740 0 0 2 0x14200 zerothread
92022 470844 0 0 3 0x14200 aiodoned aiodoned
56823 354312 0 0 3 0x14200 syncer update
29640 287594 0 0 3 0x14200 cleaner cleaner
5412 520680 0 0 3 0x14200 reaper reaper
39578 474890 0 0 3 0x14200 pgdaemon pagedaemon
55435 152285 0 0 3 0x14200 bored viomb
56273 450455 0 0 3 0x40014200 acpi0 acpi0
53940 174241 0 0 3 0x14200 bored softnet3
20352 155365 0 0 3 0x14200 bored softnet2
65860 28212 0 0 3 0x14200 bored softnet1
75830 166606 0 0 3 0x14200 bored softnet0
82538 315132 0 0 3 0x14200 bored systqmp
96852 420208 0 0 3 0x14200 bored systq
52654 381651 0 0 3 0x40014200 tmoslp softclock
86060 263219 0 0 3 0x40014200 idle0
1 375056 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10196 11121K 11510K 166960K 13796 0
pcb 17 20K 22K 166960K 539 0
rtable 191 7K 8K 166960K 675 0
pf 36 14K 22K 166960K 131 0
ifaddr 35 6K 7K 166960K 94 0
ifgroup 52 2K 2K 166960K 148 0
sysctl 3 0K 0K 166960K 3 0
counters 29 17K 17K 166960K 57 0
ioctlops 0 0K 4K 166960K 286 0
iov 0 0K 24K 166960K 169 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1456 92K 92K 166960K 2740 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 2K 6K 166960K 34 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 122 0
dirhash 12 2K 3K 166960K 48 0
ACPI 1690 195K 286K 166960K 12468 0
file desc 16 57K 97K 166960K 1484 0
sigio 0 0K 0K 166960K 19 0
proc 60 59K 124K 166960K 702 0
subproc 104 6K 6K 166960K 160 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 416 0
in_multi 80 6K 7K 166960K 203 0
ether_multi 1 0K 0K 166960K 6 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 145 652K 652K 166960K 145 0
exec 0 0K 1K 166960K 641 0
fusefs mount 1 32K 32K 166960K 1 0
pfkey data 0 0K 0K 166960K 3 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 204 71K 88K 166960K 15209 0
UVM aobj 112 3K 3K 166960K 113 0
pinsyscall 35 70K 96K 166960K 2596 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 81 0
NDP 10 0K 2K 166960K 65 0
temp 76 6821K 6891K 166960K 48530 0
kqueue 12 18K 30K 166960K 259 0
SYN cache 2 16K 16K 166960K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 130 0 127 1 0 1 1 0 8 0
rtentry 112 188 0 105 4 0 4 4 0 8 0
unpcb 144 1333 0 1318 19 16 3 6 0 8 2
syncache 336 6 0 6 3 2 1 1 0 8 1
tcpqe 32 1 0 1 1 1 0 1 0 8 0
tcpcb 808 555 0 547 25 23 2 8 0 8 1
arp 88 32 0 16 1 0 1 1 0 8 0
ipq 40 6 0 3 1 0 1 1 0 8 0
ipqe 40 95 0 92 1 0 1 1 0 8 0
inpcb 336 2437 0 2420 56 51 5 13 0 8 3
nd6 104 42 0 22 1 0 1 1 0 8 0
pkpcb 40 6 0 6 4 3 1 1 0 8 1
kcovpl 48 12 0 4 1 0 1 1 0 8 0
ppxss 1072 13 0 13 5 4 1 1 0 8 1
pfstscr 40 1 0 1 1 1 0 1 0 8 0
pfanchor 1288 1 0 0 1 0 1 1 0 8 0
pftag 88 3 0 0 1 0 1 1 0 8 0
pfstitem 24 4 0 0 1 0 1 1 0 8 0
pfstkey 128 7 0 3 2 1 1 1 0 8 0
pfstate 344 4 0 2 2 1 1 1 0 8 0
pfrule 1344 15 0 14 3 2 1 1 0 8 0
art_heap8 4096 3 0 0 3 0 3 3 0 8 0
art_heap4 256 836 0 498 33 7 26 31 0 8 1
art_table 32 839 0 498 4 0 4 4 0 8 0
art_node 16 184 0 112 1 0 1 1 0 8 0
sysvmsgpl 40 14 0 13 1 0 1 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 118 0 108 1 0 1 1 0 8 0
shmpl 112 110 0 1 4 0 4 4 0 8 0
dirhash 1024 41 0 24 3 0 3 3 0 8 0
dino2pl 256 4017 0 2523 95 0 95 95 0 8 0
ffsino 240 4017 0 2523 89 0 89 89 0 8 0
nchpl 144 6072 0 5552 63 32 31 63 0 8 8
uvmvnodes 80 5031 0 0 103 0 103 103 0 8 0
vnodes 216 5031 0 0 280 0 280 280 0 8 0
namei 1024 21981 0 21980 3 2 1 2 0 8 0
kstatmem 264 76 0 56 2 0 2 2 0 8 0
scsiplug 72 10 0 10 5 4 1 1 0 8 1
scxspl 216 17656 0 17656 13 11 2 8 1 8 2
plimitpl 152 525 0 509 1 0 1 1 0 8 0
sigapl 424 1778 0 1734 9 2 7 8 0 8 0
futexpl 64 21954 0 21949 1 0 1 1 0 8 0
knotepl 120 61657 0 61612 71 60 11 16 0 8 8
kqueuepl 184 393 0 383 1 0 1 1 0 8 0
pipepl 288 249 0 222 5 0 5 5 0 8 2
fdescpl 432 1735 0 1708 5 1 4 5 0 8 0
filepl 120 12575 0 12335 26 15 11 14 0 8 0
lockfpl 104 382 0 380 1 0 1 1 0 8 0
lockfspl 48 160 0 158 1 0 1 1 0 8 0
sessionpl 144 26 0 19 1 0 1 1 0 8 0
pgrppl 48 54 0 39 1 0 1 1 0 8 0
ucredpl 104 2129 0 2117 1 0 1 1 0 8 0
zombiepl 144 2203 0 2201 4 3 1 1 0 8 0
processpl 1096 1778 0 1734 5 1 4 5 0 8 0
procpl 648 3887 0 3836 11 4 7 8 0 8 0
sosppl 168 8 0 8 5 4 1 1 0 8 1
sockpl 504 3963 0 3930 122 109 13 29 0 8 8
mcl64k 65536 19 0 19 6 5 1 1 0 8 1
mcl16k 16384 4 0 4 2 2 0 1 0 8 0
mcl8k 8192 17 0 17 5 5 0 1 0 8 0
mcl4k 4096 4363 0 4314 16 9 7 14 0 8 0
mcl2k 2048 1802 0 1798 6 4 2 2 0 8 1
mtagpl 96 37 0 14 1 0 1 1 0 8 0
mbufpl 256 19966 0 19783 37 20 17 20 0 8 3
bufpl 280 6967 0 720 447 0 447 447 0 8 0
anonpl 24 271781 0 268803 92 48 44 47 0 187 17
amapchunkpl 152 51079 0 50639 68 44 24 36 0 158 4
amappl16 200 6496 0 6469 53 42 11 15 0 8 8
amappl15 192 5 0 5 1 1 0 1 0 8 0
amappl14 184 115 0 106 1 0 1 1 0 8 0
amappl13 176 54 0 53 1 0 1 1 0 8 0
amappl12 168 2409 0 2381 3 1 2 3 0 8 0
amappl11 160 49 0 39 1 0 1 1 0 8 0
amappl10 152 9 0 9 1 1 0 1 0 8 0
amappl9 144 145 0 145 1 1 0 1 0 8 0
amappl8 136 36 0 35 1 0 1 1 0 8 0
amappl7 128 103 0 94 1 0 1 1 0 8 0
amappl6 120 196 0 195 1 0 1 1 0 8 0
amappl5 112 146 0 137 1 0 1 1 0 8 0
amappl4 104 292 0 282 1 0 1 1 0 8 0
amappl3 96 9341 0 9257 3 0 3 3 0 8 0
amappl2 88 2019 0 1949 2 0 2 2 0 8 0
amappl1 80 11562 0 11123 12 0 12 12 0 8 1
amappl 88 14741 0 14586 5 0 5 5 0 92 0
dma32768 32768 1 0 1 1 1 0 1 0 8 0
dma16384 16384 1 0 1 1 1 0 1 0 8 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 8 0 8 2 2 0 1 0 8 0
dma128 128 258 0 258 4 3 1 1 0 8 1
dma64 64 9 0 9 3 2 1 1 0 8 1
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 72 112 0 1 3 0 3 3 0 8 0
uaddrrnd 24 1735 0 1708 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1735 0 1708 1 0 1 1 0 8 0
vmmpekpl 168 14055 0 14007 4 1 3 3 0 8 0
vmmpepl 168 110332 0 108777 108 25 83 90 0 357 7
vmsppl 352 1734 0 1708 4 1 3 4 0 8 0
rwobjpl 24 35978 0 30097 36 0 36 36 0 8 0
pdppl 4096 3477 0 3416 119 54 65 83 0 8 4
pvpl 32 729616 0 721687 163 58 105 116 0 265 21
pmappl 216 1734 0 1708 3 0 3 3 0 8 0
extentpl 40 55 0 38 1 0 1 1 0 8 0
phpool 112 634 0 298 11 0 11 11 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830425c6) at panic+0x1cf sys/kern/subr_prf.c:198
assertwaitok() at assertwaitok+0x16f sys/kern/subr_xxx.c:163
mi_switch() at mi_switch+0x2b6 sys/kern/sched_bsd.c:412
yield() at yield+0x61 sys/kern/sched_bsd.c:320
pool_get(ffffffff834dae78,1) at pool_get+0x1e9 sys/kern/subr_pool.c:589
uvm_mapent_alloc(ffffffff835b1338,1323) at uvm_mapent_alloc+0x3aa
uvm_map(ffffffff835b1338,ffff80002a53fa30,6000,0,ffffffffffffffff,0,f5eb41124920cfd) at uvm_map+0x3b7
km_alloc(6000,ffffffff83247690,ffffffff8328d508,ffffffff8328d580) at km_alloc+0x20d sys/uvm/uvm_km.c:748
fork1(ffff80002a4b0f40,1,ffffffff8239fb20,0,ffff80002a53fb80,0) at fork1+0x30b sys/kern/kern_fork.c:393
syscall(ffff80002a53fc30) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7145d6c1c030, count: -12
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830425c6) at panic+0x1cf sys/kern/subr_prf.c:198
assertwaitok() at assertwaitok+0x16f sys/kern/subr_xxx.c:163
mi_switch() at mi_switch+0x2b6 sys/kern/sched_bsd.c:412
yield() at yield+0x61 sys/kern/sched_bsd.c:320
pool_get(ffffffff834dae78,1) at pool_get+0x1e9 sys/kern/subr_pool.c:589
uvm_mapent_alloc(ffffffff835b1338,1323) at uvm_mapent_alloc+0x3aa
uvm_map(ffffffff835b1338,ffff80002a53fa30,6000,0,ffffffffffffffff,0,f5eb41124920cfd) at uvm_map+0x3b7
km_alloc(6000,ffffffff83247690,ffffffff8328d508,ffffffff8328d580) at km_alloc+0x20d sys/uvm/uvm_km.c:748
fork1(ffff80002a4b0f40,1,ffffffff8239fb20,0,ffff80002a53fb80,0) at fork1+0x30b sys/kern/kern_fork.c:393
syscall(ffff80002a53fc30) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7145d6c1c030, count: -12