panic: pool_cache_paitniemc:_ mkageirnce_lc hdeicagkn:o msbtuicfp al sscpeurt iforne e" !l_ikset rnmeoldi_floieckd_:h eiltde(m) "addr 0xfffffd8066083f00+16 0x0!=0xbf1d09a7cdf25cbc
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
405765 38804 0 0 0 0 syz-executor.0
* 39477 56873 0 0x12 0 1 sshd
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:207
pool_cache_get(ffffffff8268a180) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1789 [inline]
pool_cache_get(ffffffff8268a180) at pool_cache_get+0x323 sys/kern/subr_pool.c:1892
pool_get() at pool_get+0x91 sys/kern/subr_pool.c:572
m_copym(fffffd806214f100,16c,580,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline]
m_copym(fffffd806214f100,16c,580,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667
tcp_output(ffff800000a82000) at tcp_output+0x151c sys/netinet/tcp_output.c:673
tcp_usrreq(fffffd806e97aa88,9,fffffd806d651600,0,0,ffff800020ac1be8) at tcp_usrreq+0xa45
sosend(fffffd806e97aa88,0,ffff800020a89d78,0,0,80) at sosend+0x645 sys/kern/uipc_socket.c:524
dofilewritev(ffff800020ac1be8,4,ffff800020a89d78,0,ffff800020a89e60) at dofilewritev+0x1b7 sys/kern/sys_generic.c:364
sys_write(ffff800020ac1be8,ffff800020a89e10,ffff800020a89e60) at sys_write+0x83 sys/kern/sys_generic.c:284
syscall(ffff800020a89ee0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020a89ee0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff2400, 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{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd8066083f00+16 0x0!=0xbf1d09a7cdf25cbc
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:207
pool_cache_get(ffffffff8268a180) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1789 [inline]
pool_cache_get(ffffffff8268a180) at pool_cache_get+0x323 sys/kern/subr_pool.c:1892
pool_get() at pool_get+0x91 sys/kern/subr_pool.c:572
m_copym(fffffd806214f100,16c,580,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline]
m_copym(fffffd806214f100,16c,580,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667
tcp_output(ffff800000a82000) at tcp_output+0x151c sys/netinet/tcp_output.c:673
tcp_usrreq(fffffd806e97aa88,9,fffffd806d651600,0,0,ffff800020ac1be8) at tcp_usrreq+0xa45
sosend(fffffd806e97aa88,0,ffff800020a89d78,0,0,80) at sosend+0x645 sys/kern/uipc_socket.c:524
dofilewritev(ffff800020ac1be8,4,ffff800020a89d78,0,ffff800020a89e60) at dofilewritev+0x1b7 sys/kern/sys_generic.c:364
sys_write(ffff800020ac1be8,ffff800020a89e10,ffff800020a89e60) at sys_write+0x83 sys/kern/sys_generic.c:284
syscall(ffff800020a89ee0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
syscall(ffff800020a89ee0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff2400, count: -12
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff800020a89720
rbx 0xffff800020a897d0
rdx 0xffff800020ac1be8
rcx 0
rax 0
r8 0xffffffff81a61d1f kprintf+0x16f
r9 0x1
r10 0x25
r11 0x4e29e11d00492136
r12 0x3000000008
r13 0xffff800020a89730
r14 0x100
r15 0x1
rip 0xffffffff8157cc78 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800020a89710
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (sshd) pid=39477 stat=onproc
flags process=12<EXEC,SUGID> proc=0
pri=50, usrpri=50, nice=20
forw=0xffffffffffffffff, list=0xffff800020ac07a8,0xffff800020ac0530
process=0xffff800020ac3238 user=0xffff800020a84000, vmspace=0xfffffd806e7be458
estcpu=0, cpticks=2, pctcpu=0.1
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
38804 405765 9051 0 7 0 syz-executor.0
9051 379283 71479 0 2 0x2 syz-executor.0
62770 259024 71479 0 2 0x2 syz-executor.1
26448 6126 0 0 3 0x14200 bored sosplice
71479 430545 79398 0 3 0x82 thrsleep syz-fuzzer
71479 127265 79398 0 3 0x4000082 nanosleep syz-fuzzer
71479 225910 79398 0 3 0x4000082 thrsleep syz-fuzzer
71479 38705 79398 0 3 0x4000082 thrsleep syz-fuzzer
71479 459138 79398 0 3 0x4000082 thrsleep syz-fuzzer
71479 292685 79398 0 3 0x4000082 thrsleep syz-fuzzer
71479 279565 79398 0 3 0x4000082 kqread syz-fuzzer
71479 44579 79398 0 3 0x4000082 thrsleep syz-fuzzer
71479 298982 79398 0 3 0x4000082 thrsleep syz-fuzzer
71479 341095 79398 0 3 0x4000082 thrsleep syz-fuzzer
79398 375224 56873 0 3 0x10008a pause ksh
*56873 39477 33291 0 7 0x12 sshd
32094 48478 1 0 3 0x100083 ttyin getty
33291 509414 1 0 3 0x80 select sshd
40040 11040 37080 74 3 0x100092 bpf pflogd
37080 485504 1 0 3 0x80 netio pflogd
74674 328411 12231 73 3 0x100090 kqread syslogd
12231 132236 1 0 3 0x100082 netio syslogd
59977 226919 1 77 3 0x100090 poll dhclient
78096 20173 1 0 3 0x80 poll dhclient
24233 453373 0 0 2 0x14200 zerothread
37045 257269 0 0 3 0x14200 aiodoned aiodoned
83969 178998 0 0 3 0x14200 syncer update
24287 188158 0 0 3 0x14200 cleaner cleaner
3731 415825 0 0 3 0x14200 reaper reaper
79095 366181 0 0 3 0x14200 pgdaemon pagedaemon
14760 81575 0 0 3 0x14200 bored crynlk
32277 107270 0 0 3 0x14200 bored crypto
20084 224903 0 0 3 0x40014200 acpi0 acpi0
19044 3389 0 0 3 0x40014200 idle1
59087 809 0 0 3 0x14200 bored softnet
29475 363104 0 0 3 0x14200 bored systqmp
6706 233083 0 0 3 0x14200 bored systq
66148 29994 0 0 3 0x40014200 bored softclock
61864 141099 0 0 3 0x40014200 idle0
9439 302745 0 0 3 0x14200 bored smr
1 281602 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 9051 (syz-executor.0) thread 0xffff800020a8a7b0 (379283)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82687c48)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline]
#1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555
#2 Xsyscall+0x128
Process 56873 (sshd) thread 0xffff800020ac1be8 (39477)
exclusive rwlock netlock r = 0 (0xffffffff8249b598)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 solock+0x5a sys/kern/uipc_socket2.c:282
#2 sosend+0x51b sys/kern/uipc_socket.c:512
#3 dofilewritev+0x1b7 sys/kern/sys_generic.c:364
#4 sys_write+0x83 sys/kern/sys_generic.c:284
#5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
#5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
#6 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 9545 6622K 6918K 78643K 11440 0
pcb 13 8K 9K 78643K 297 0
rtable 111 4K 4K 78643K 366 0
ifaddr 74 14K 14K 78643K 141 0
counters 39 33K 33K 78643K 39 0
ioctlops 0 0K 4K 78643K 1493 0
iov 0 0K 16K 78643K 80 0
mount 1 1K 1K 78643K 1 0
vnodes 1220 77K 77K 78643K 1541 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 6 0
VM map 5 2K 2K 78643K 5 0
sem 12 1K 1K 78643K 93 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 196K 290K 78643K 12766 0
file desc 5 13K 25K 78643K 377 0
sigio 0 0K 0K 78643K 6 0
proc 60 63K 83K 78643K 574 0
subproc 32 2K 2K 78643K 68 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 190 0
in_multi 58 3K 3K 78643K 89 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 60 265K 265K 78643K 60 0
exec 0 0K 1K 78643K 258 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 126 55K 56K 78643K 2291 0
UVM aobj 16 2K 2K 78643K 20 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 158 0
NDP 13 0K 0K 78643K 31 0
temp 141 3579K 3655K 78643K 21482 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
arp 64 10 0 4 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 96 49 0 47 1 0 1 1 0 8 0
rtentry 112 69 0 25 2 0 2 2 0 8 0
unpcb 120 272 0 261 1 0 1 1 0 8 0
syncache 280 6 0 6 3 3 0 1 0 8 0
tcpqe 32 252 0 252 3 3 0 1 0 8 0
tcpcb 640 352 0 348 3 1 2 2 0 8 1
ipq 40 1 0 1 1 1 0 1 0 8 0
ipqe 40 2 0 2 1 1 0 1 0 8 0
inpcb 280 1060 0 1053 2 0 2 2 0 8 1
nd6 48 9 0 5 1 0 1 1 0 8 0
pkpcb 40 2 0 2 1 1 0 1 0 8 0
ppxss 1128 6 0 6 1 0 1 1 0 8 1
pffrag 232 11 0 11 1 1 0 1 0 482 0
pffrnode 88 11 0 11 1 1 0 1 0 8 0
pffrent 40 327 0 327 1 1 0 1 0 8 0
pfosfp 40 846 0 423 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfstitem 24 45 0 7 1 0 1 1 0 8 0
pfstkey 112 45 0 7 2 0 2 2 0 8 0
pfstate 328 45 0 7 4 0 4 4 0 8 0
pfrule 1360 21 0 16 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 330 0 114 17 3 14 14 0 8 0
art_table 32 331 0 114 2 0 2 2 0 8 0
art_node 16 68 0 28 1 0 1 1 0 8 0
sysvmsgpl 40 28 0 16 1 0 1 1 0 8 0
semupl 112 3 0 3 1 1 0 1 0 8 0
semapl 112 91 0 81 1 0 1 1 0 8 0
shmpl 112 18 0 4 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 1942 0 537 46 0 46 46 0 8 0
ffsino 272 1942 0 537 95 0 95 95 0 8 0
nchpl 144 2689 0 1084 61 0 61 61 0 8 0
uvmvnodes 72 2237 0 0 41 0 41 41 0 8 0
vnodes 208 2237 0 0 118 0 118 118 0 8 0
namei 1024 7929 0 7929 1 0 1 1 0 8 1
percpumem 16 30 0 0 1 0 1 1 0 8 0
vcpupl 1984 3 0 0 1 0 1 1 0 8 0
vmpool 552 3 0 0 1 0 1 1 0 8 0
scsiplug 64 1 0 1 1 0 1 1 0 8 1
scxspl 208 8246 0 8246 8 6 2 6 0 8 2
plimitpl 152 45 0 37 1 0 1 1 0 8 0
sigapl 432 569 0 554 3 1 2 3 0 8 0
futexpl 56 8427 0 8427 1 0 1 1 0 8 1
knotepl 112 132 0 113 1 0 1 1 0 8 0
kqueuepl 104 126 0 124 1 0 1 1 0 8 0
pipepl 160 616 0 597 2 0 2 2 0 8 1
fdescpl 488 570 0 554 3 0 3 3 0 8 0
filepl 152 4671 0 4571 7 1 6 6 0 8 2
lockfpl 104 176 0 175 1 0 1 1 0 8 0
lockfspl 48 43 0 42 1 0 1 1 0 8 0
sessionpl 128 20 0 9 1 0 1 1 0 8 0
pgrppl 48 25 0 14 1 0 1 1 0 8 0
ucredpl 96 316 0 307 1 0 1 1 0 8 0
zombiepl 144 554 0 554 1 0 1 1 0 8 1
processpl 928 586 0 554 5 0 5 5 0 8 0
procpl 648 1400 0 1359 5 0 5 5 0 8 1
srpgc 80 2 0 2 1 1 0 1 0 8 0
sosppl 144 6 0 6 1 1 0 1 0 8 0
sockpl 384 1393 0 1373 7 2 5 5 0 8 2
mcl64k 65536 6 0 0 1 0 1 1 0 8 0
mcl16k 16384 2 0 0 1 0 1 1 0 8 0
mcl12k 12288 4 0 0 1 0 1 1 0 8 0
mcl9k 9216 2 0 0 1 0 1 1 0 8 0
mcl8k 8192 6 0 0 1 0 1 1 0 8 0
mcl4k 4096 7 0 0 1 0 1 1 0 8 0
mcl2k2 2112 4 0 0 1 0 1 1 0 8 0
mcl2k 2048 166 0 0 20 0 20 20 0 8 0
mtagpl 80 15 0 0 1 0 1 1 0 8 0
mbufpl 256 257 0 0 15 0 15 15 0 8 0
bufpl 280 7067 0 1312 412 0 412 412 0 8 0
anonpl 16 83360 0 66481 92 2 90 90 0 124 7
amapchunkpl 152 3824 0 3681 14 7 7 12 0 158 0
amappl16 192 3148 0 2043 72 8 64 68 0 8 8
amappl14 176 69 0 63 1 0 1 1 0 8 0
amappl13 168 48 0 47 1 0 1 1 0 8 0
amappl12 160 15 0 11 1 0 1 1 0 8 0
amappl11 152 212 0 196 1 0 1 1 0 8 0
amappl10 144 15 0 8 1 0 1 1 0 8 0
amappl9 136 746 0 741 1 0 1 1 0 8 0
amappl8 128 315 0 282 2 0 2 2 0 8 0
amappl7 120 48 0 42 1 0 1 1 0 8 0
amappl6 112 212 0 202 1 0 1 1 0 8 0
amappl5 104 157 0 140 1 0 1 1 0 8 0
amappl4 96 873 0 843 2 1 1 2 0 8 0
amappl3 88 123 0 116 1 0 1 1 0 8 0
amappl2 80 3480 0 3417 3 1 2 3 0 8 0
amappl1 72 22653 0 22235 26 16 10 20 0 8 0
amappl 80 1697 0 1647 2 0 2 2 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 19 0 4 1 0 1 1 0 8 0
uaddrrnd 24 573 0 554 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 573 0 554 1 0 1 1 0 8 0
vmmpekpl 168 9234 0 9199 2 0 2 2 0 8 0
vmmpepl 168 79961 0 77735 164 21 143 143 0 357 39
vmsppl 368 569 0 554 2 0 2 2 0 8 0
pdppl 4096 1153 0 1111 6 0 6 6 0 8 0
pvpl 32 251959 0 232187 211 2 209 209 0 265 17
pmappl 232 572 0 554 3 1 2 2 0 8 0
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 168 0 6 5 0 5 5 0 8 0