panic: pool_p_free: tcpqe free list modified: page 0xfffffd80589f1000; item addr 0xfffffd80589f1000; offset 0x0=0x0
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
* 60664 980 0 0x14000 0x200 0 systqmp
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff8222bfea) at panic+0x15c sys/kern/subr_prf.c:207
pool_p_free(ffffffff82590db0,fffffd80589f1f90) at pool_p_free+0x1de sys/kern/subr_pool.c:983
pool_gc_pages(0) at pool_gc_pages+0x225 sys/kern/subr_pool.c:1578
taskq_thread(ffffffff824dcb70) at taskq_thread+0x52 sys/kern/kern_task.c:370
end trace frame: 0x0, count: 10
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
pool_p_free: tcpqe free list modified: page 0xfffffd80589f1000; item addr 0xfffffd80589f1000; offset 0x0=0x0
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff8222bfea) at panic+0x15c sys/kern/subr_prf.c:207
pool_p_free(ffffffff82590db0,fffffd80589f1f90) at pool_p_free+0x1de sys/kern/subr_pool.c:983
pool_gc_pages(0) at pool_gc_pages+0x225 sys/kern/subr_pool.c:1578
taskq_thread(ffffffff824dcb70) at taskq_thread+0x52 sys/kern/kern_task.c:370
end trace frame: 0x0, count: -5
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80001d702050
rbx 0xffff80001d702100
rdx 0x2
rcx 0
rax 0
r8 0xffff80001d702010
r9 0x1
r10 0
r11 0x7484b4470b8fa881
r12 0x3000000008
r13 0xffff80001d702060
r14 0x100
r15 0x1
rip 0xffffffff81152a98 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff80001d702040
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (systqmp) pid=60664 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
pri=32, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff80001d6e25f0,0xffff80001d6e1c40
process=0xffff8000ffffeac8 user=0xffff80001d6fd000, vmspace=0xffffffff825a0508
estcpu=0, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
44525 114452 17767 0 2 0 syz-executor.0
44525 236796 17767 0 3 0x4000080 fsleep syz-executor.0
26690 8936 43788 0 2 0 syz-executor.1
26690 15347 43788 0 2 0x4000000 syz-executor.1
60714 255777 0 0 3 0x14200 bored sosplice
17767 429880 67357 0 3 0x82 nanosleep syz-executor.0
43788 498961 67357 0 2 0x482 syz-executor.1
67357 6087 1930 0 3 0x82 thrsleep syz-fuzzer
67357 49750 1930 0 3 0x4000082 thrsleep syz-fuzzer
67357 267627 1930 0 3 0x4000082 thrsleep syz-fuzzer
67357 394898 1930 0 3 0x4000082 thrsleep syz-fuzzer
67357 394404 1930 0 3 0x4000082 thrsleep syz-fuzzer
67357 300269 1930 0 3 0x4000082 kqread syz-fuzzer
67357 34105 1930 0 3 0x4000082 thrsleep syz-fuzzer
1930 412655 15206 0 3 0x10008a pause ksh
15206 510207 45840 0 3 0x92 select sshd
32938 466824 1 0 3 0x100083 ttyin getty
45840 102905 1 0 3 0x80 select sshd
63084 99802 88225 73 3 0x100090 kqread syslogd
88225 202301 1 0 3 0x100082 netio syslogd
62838 83850 1 77 3 0x100090 poll dhclient
76432 72724 1 0 3 0x80 poll dhclient
27505 399436 0 0 3 0x14200 bored smr
73799 296048 0 0 2 0x14200 zerothread
9951 384849 0 0 3 0x14200 aiodoned aiodoned
85783 480279 0 0 3 0x14200 syncer update
77660 24505 0 0 3 0x14200 cleaner cleaner
77772 91485 0 0 3 0x14200 reaper reaper
46441 203883 0 0 3 0x14200 pgdaemon pagedaemon
35860 353128 0 0 3 0x14200 bored crynlk
61895 312640 0 0 3 0x14200 bored crypto
98652 332342 0 0 3 0x40014200 acpi0 acpi0
25874 465697 0 0 3 0x14200 bored softnet
* 980 60664 0 0 7 0x14200 systqmp
78703 425527 0 0 3 0x14200 bored systq
37640 349275 0 0 3 0x40014200 bored softclock
76483 450373 0 0 3 0x40014200 idle0
1 342458 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 9470 6332K 6775K 78643K 10653 0
pcb 13 8K 8K 78643K 41 0
rtable 105 3K 3K 78643K 205 0
ifaddr 53 11K 11K 78643K 63 0
counters 22 16K 16K 78643K 23 0
ioctlops 0 0K 2K 78643K 21 0
iov 0 0K 32K 78643K 6 0
mount 1 1K 1K 78643K 1 0
vnodes 1217 77K 77K 78643K 1248 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 5 0
VM map 2 0K 0K 78643K 2 0
sem 10 0K 0K 78643K 11 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1794 195K 288K 78643K 12646 0
file desc 6 17K 25K 78643K 94 0
proc 48 38K 54K 78643K 364 0
subproc 32 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 6 0
in_multi 33 2K 2K 78643K 39 0
ether_multi 1 0K 0K 78643K 3 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 43 201K 201K 78643K 43 0
exec 0 0K 1K 78643K 193 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 94 37K 37K 78643K 1079 0
UVM aobj 10 4K 4K 78643K 10 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 22 0
NDP 8 0K 0K 78643K 13 0
temp 74 3028K 3107K 78643K 6915 0
kqueue 3 4K 10K 78643K 12 0
SYN cache 2 16K 16K 78643K 2 0
ddb> 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
rtpcb 80 25 0 23 1 0 1 1 0 8 0
rtentry 112 45 0 1 2 0 2 2 0 8 0
unpcb 120 47 0 39 1 0 1 1 0 8 0
syncache 264 4 0 4 1 1 0 1 0 8 0
tcpqe 32 102 0 102 1 1 0 1 0 8 0
tcpcb 544 40 0 36 1 0 1 1 0 8 0
ipq 40 1 0 1 1 0 1 1 0 8 1
ipqe 40 3 0 3 1 0 1 1 0 8 1
inpcb 280 112 0 105 2 0 2 2 0 8 1
nd6 48 6 0 0 1 0 1 1 0 8 0
pkpcb 40 1 0 1 1 0 1 1 0 8 1
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 1 0 1 1 0 1 1 0 8 1
semapl 112 9 0 1 1 0 1 1 0 8 0
shmpl 112 8 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 1502 0 103 46 0 46 46 0 8 0
ffsino 240 1502 0 103 83 0 83 83 0 8 0
nchpl 144 1807 0 196 60 0 60 60 0 8 0
uvmvnodes 72 1562 0 0 29 0 29 29 0 8 0
vnodes 208 1562 0 0 83 0 83 83 0 8 0
namei 1024 4518 0 4518 1 0 1 1 0 8 1
vcpupl 1984 2 0 0 1 0 1 1 0 8 0
vmpool 528 2 0 0 1 0 1 1 0 8 0
scxspl 192 5355 0 5355 1 0 1 1 0 8 1
plimitpl 152 23 0 16 1 0 1 1 0 8 0
sigapl 424 281 0 251 4 0 4 4 0 8 0
futexpl 56 1501 0 1500 1 0 1 1 0 8 0
knotepl 112 65 0 46 1 0 1 1 0 8 0
kqueuepl 144 116 0 113 1 0 1 1 0 8 0
pipelkpl 16 77 0 67 1 0 1 1 0 8 0
pipepl 120 154 0 135 1 0 1 1 0 8 0
fdescpl 432 266 0 251 2 0 2 2 0 8 0
filepl 120 1467 0 1370 4 0 4 4 0 8 1
lockfpl 104 25 0 24 1 0 1 1 0 8 0
lockfspl 48 9 0 8 1 0 1 1 0 8 0
sessionpl 112 17 0 7 1 0 1 1 0 8 0
pgrppl 48 19 0 9 1 0 1 1 0 8 0
ucredpl 96 117 0 110 1 0 1 1 0 8 0
zombiepl 144 251 0 251 1 0 1 1 0 8 1
processpl 920 281 0 251 4 0 4 4 0 8 0
procpl 624 367 0 329 4 0 4 4 0 8 1
sosppl 128 3 0 3 1 0 1 1 0 8 1
sockpl 400 185 0 168 3 0 3 3 0 8 1
mcl64k 65536 9 0 9 1 0 1 1 0 8 1
mcl8k 8192 2 0 2 1 0 1 1 0 8 1
mcl4k 4096 13 0 13 2 1 1 1 0 8 1
mcl2k2 2112 1 0 1 1 0 1 1 0 8 1
mcl2k 2048 62176 0 62131 18 4 14 14 0 8 7
mtagpl 80 4 0 2 2 1 1 1 0 8 0
mbufpl 256 98693 0 98612 12 3 9 9 0 8 0
bufpl 280 4104 0 161 282 0 282 282 0 8 0
anonpl 16 44807 0 30625 75 1 74 74 0 107 17
amapchunkpl 152 1430 0 1295 9 0 9 9 0 158 2
amappl16 192 1363 0 577 48 1 47 48 0 8 7
amappl15 184 1 0 0 1 0 1 1 0 8 0
amappl14 176 2 0 1 2 1 1 1 0 8 0
amappl13 168 84 0 79 1 0 1 1 0 8 0
amappl12 160 11 0 10 1 0 1 1 0 8 0
amappl11 152 64 0 51 1 0 1 1 0 8 0
amappl10 144 23 0 19 1 0 1 1 0 8 0
amappl9 136 377 0 374 1 0 1 1 0 8 0
amappl8 128 260 0 249 1 0 1 1 0 8 0
amappl7 120 107 0 96 1 0 1 1 0 8 0
amappl6 112 21 0 19 1 0 1 1 0 8 0
amappl5 104 184 0 173 1 0 1 1 0 8 0
amappl4 96 500 0 466 2 1 1 2 0 8 0
amappl3 88 132 0 124 1 0 1 1 0 8 0
amappl2 80 1328 0 1256 3 1 2 3 0 8 0
amappl1 72 14425 0 14001 26 13 13 20 0 8 4
amappl 80 633 0 589 1 0 1 1 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 9 0 0 1 0 1 1 0 8 0
uaddrrnd 24 268 0 251 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 268 0 251 1 0 1 1 0 8 0
vmmpekpl 168 5882 0 5855 2 0 2 2 0 8 0
vmmpepl 168 39086 0 37148 131 4 127 127 0 357 42
vmsppl 272 267 0 251 2 0 2 2 0 8 0
pdppl 4096 542 0 504 6 0 6 6 0 8 1
pvpl 32 139936 0 122720 172 0 172 172 0 265 33
pmappl 200 267 0 251 1 0 1 1 0 8 0
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 152 0 10 5 0 5 5 0 8 0