login: panic: pool_cache_piatneicm:_m akgericne_cl hedcika:g nmbosutficp la csspeur tfiroeen "li!_stk ernmoeld_ilfiocedk:_h ieltde(m )a"ddr 0xfffffd806d350200+16 0x0!=0xa0b1b44da062bc75
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
79415 6519 0 0 0x4000000 0 syz-executor.0
*324390 9681 0 0 0x4000000 1 syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821c307b) at panic+0x15c sys/kern/subr_prf.c:207
pool_cache_get(ffffffff8265bda8) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1789 [inline]
pool_cache_get(ffffffff8265bda8) at pool_cache_get+0x323 sys/kern/subr_pool.c:1892
pool_get(ffffffff8265bda8,2) at pool_get+0x91 sys/kern/subr_pool.c:572
m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283
ip_fragment(fffffd806f205b00,ffff8000001732a8,5b4) at ip_fragment+0x13a sys/netinet/ip_output.c:682
ip_output(fffffd806f205b00,0,fffffd806f675700,20,0,fffffd806f675690) at ip_output+0xfc1 sys/netinet/ip_output.c:501
rip_output(fffffd806f205b00,fffffd807eadc198,ffff800021581618,ffff800022d94000) at rip_output+0x252 sys/netinet/raw_ip.c:289
rip_usrreq(fffffd807eadc198,9,fffffd806f205b00,0,0,ffff800020adf8d0) at rip_usrreq+0x46a sys/netinet/raw_ip.c:538
sosend(fffffd807eadc198,0,ffff800021581780,0,0,80) at sosend+0x645 sys/kern/uipc_socket.c:524
sendit(ffff800020adf8d0,7,ffff800021581860,0,ffff800021581940) at sendit+0x52b sys/kern/uipc_syscalls.c:662
sys_sendto(ffff800020adf8d0,ffff8000215818f8,ffff800021581940) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:527
syscall(ffff8000215819c0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
syscall(ffff8000215819c0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xb93970a4c50, count: 1
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 0xfffffd806d350200+16 0x0!=0xa0b1b44da062bc75
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff821c307b) at panic+0x15c sys/kern/subr_prf.c:207
pool_cache_get(ffffffff8265bda8) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1789 [inline]
pool_cache_get(ffffffff8265bda8) at pool_cache_get+0x323 sys/kern/subr_pool.c:1892
pool_get(ffffffff8265bda8,2) at pool_get+0x91 sys/kern/subr_pool.c:572
m_gethdr(2,2) at m_gethdr+0x4c sys/kern/uipc_mbuf.c:283
ip_fragment(fffffd806f205b00,ffff8000001732a8,5b4) at ip_fragment+0x13a sys/netinet/ip_output.c:682
ip_output(fffffd806f205b00,0,fffffd806f675700,20,0,fffffd806f675690) at ip_output+0xfc1 sys/netinet/ip_output.c:501
rip_output(fffffd806f205b00,fffffd807eadc198,ffff800021581618,ffff800022d94000) at rip_output+0x252 sys/netinet/raw_ip.c:289
rip_usrreq(fffffd807eadc198,9,fffffd806f205b00,0,0,ffff800020adf8d0) at rip_usrreq+0x46a sys/netinet/raw_ip.c:538
sosend(fffffd807eadc198,0,ffff800021581780,0,0,80) at sosend+0x645 sys/kern/uipc_socket.c:524
sendit(ffff800020adf8d0,7,ffff800021581860,0,ffff800021581940) at sendit+0x52b sys/kern/uipc_syscalls.c:662
sys_sendto(ffff800020adf8d0,ffff8000215818f8,ffff800021581940) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:527
syscall(ffff8000215819c0) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline]
syscall(ffff8000215819c0) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xb93970a4c50, count: -14
ddb{1}> show registers
rdi 0xffffffff814b5e47 db_enter+0x17
rsi 0x8c1e __ALIGN_SIZE+0x7c1e
rbp 0xffff8000215811a0
rbx 0xffff800021581250
rdx 0x8c1f __ALIGN_SIZE+0x7c1f
rcx 0xffff800022d94000
rax 0xffff800022d94000
r8 0xffffffff81f7d7af kprintf+0x16f
r9 0x1
r10 0x25
r11 0x32426def9129db15
r12 0x3000000008
r13 0xffff8000215811b0
r14 0x100
r15 0x1
rip 0xffffffff814b5e48 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800021581190
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.1) pid=324390 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=86, usrpri=86, nice=20
forw=0xffffffffffffffff, list=0xffff800020adeef0,0xffff800020adfb58
process=0xffff800020aec000 user=0xffff80002157c000, vmspace=0xfffffd807f007000
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
6519 485200 27625 0 2 0 syz-executor.0
6519 79415 27625 0 7 0x4000000 syz-executor.0
9681 222440 10940 0 2 0 syz-executor.1
* 9681 324390 10940 0 7 0x4000000 syz-executor.1
10940 176910 45118 0 2 0x482 syz-executor.1
1696 324478 0 0 3 0x14200 bored sosplice
27625 411167 45118 0 3 0x82 nanosleep syz-executor.0
45118 396361 97936 0 3 0x82 thrsleep syz-fuzzer
45118 227670 97936 0 3 0x4000082 nanosleep syz-fuzzer
45118 69874 97936 0 3 0x4000082 thrsleep syz-fuzzer
45118 415985 97936 0 3 0x4000082 thrsleep syz-fuzzer
45118 204573 97936 0 3 0x4000082 thrsleep syz-fuzzer
45118 185231 97936 0 3 0x4000082 thrsleep syz-fuzzer
45118 456555 97936 0 3 0x4000082 kqread syz-fuzzer
45118 63708 97936 0 3 0x4000082 thrsleep syz-fuzzer
45118 214849 97936 0 2 0x4000482 syz-fuzzer
45118 320117 97936 0 3 0x4000082 thrsleep syz-fuzzer
97936 331944 10218 0 3 0x10008a pause ksh
10218 467175 83554 0 3 0x92 select sshd
62332 129683 1 0 3 0x100083 ttyin getty
83554 29714 1 0 3 0x80 select sshd
48809 389594 78873 74 3 0x100092 bpf pflogd
78873 467589 1 0 3 0x80 netio pflogd
85141 205007 57401 73 3 0x100090 kqread syslogd
57401 394492 1 0 3 0x100082 netio syslogd
88488 50803 1 77 3 0x100090 poll dhclient
59549 195531 1 0 3 0x80 poll dhclient
45887 369757 0 0 2 0x14200 zerothread
18744 313309 0 0 3 0x14200 aiodoned aiodoned
93229 198747 0 0 3 0x14200 syncer update
13103 59762 0 0 3 0x14200 cleaner cleaner
54311 486866 0 0 3 0x14200 reaper reaper
3146 273405 0 0 3 0x14200 pgdaemon pagedaemon
96798 105260 0 0 3 0x14200 bored crynlk
8738 256027 0 0 3 0x14200 bored crypto
36440 507073 0 0 3 0x40014200 acpi0 acpi0
40248 266509 0 0 3 0x40014200 idle1
91085 82183 0 0 3 0x14200 bored softnet
16280 445347 0 0 3 0x14200 bored systqmp
63777 461504 0 0 3 0x14200 bored systq
92006 168480 0 0 3 0x40014200 bored softclock
86298 355382 0 0 3 0x40014200 idle0
66456 490307 0 0 3 0x14200 bored smr
1 150225 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
Process 6519 (syz-executor.0) thread 0xffff800020adfb48 (485200)
shared rwlock vmmaplk r = 0 (0xfffffd807f007468)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1448
#2 uvm_fault+0xd85 sys/uvm/uvm_fault.c:524
#3 pageflttrap+0x20b sys/arch/amd64/amd64/trap.c:199
#4 usertrap+0x21a sys/arch/amd64/amd64/trap.c:369
#5 recall_trap+0x8
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8264b740)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1163
#1 pageflttrap+0x6f sys/arch/amd64/amd64/trap.c:162
#2 usertrap+0x21a sys/arch/amd64/amd64/trap.c:369
#3 recall_trap+0x8
Process 9681 (syz-executor.1) thread 0xffff800020adf8d0 (324390)
exclusive rwlock netlock r = 0 (0xffffffff8244e7e8)
#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 sendit+0x52b sys/kern/uipc_syscalls.c:662
#4 sys_sendto+0x80 sys/kern/uipc_syscalls.c:527
#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 9521 6604K 7386K 78643K 11355 0
pcb 13 8K 8K 78643K 59 0
rtable 108 4K 4K 78643K 323 0
ifaddr 63 13K 13K 78643K 95 0
counters 39 33K 33K 78643K 39 0
ioctlops 0 0K 4K 78643K 1476 0
iov 0 0K 16K 78643K 34 0
mount 1 1K 1K 78643K 1 0
vnodes 1226 77K 77K 78643K 1423 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 1K 1K 78643K 2 0
sem 12 0K 0K 78643K 58 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1809 196K 290K 78643K 12766 0
file desc 6 17K 25K 78643K 178 0
sigio 0 0K 0K 78643K 4 0
proc 60 63K 95K 78643K 491 0
subproc 32 2K 2K 78643K 51 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 8 0
in_multi 40 2K 2K 78643K 53 0
ether_multi 1 0K 0K 78643K 2 0
mrt 0 0K 0K 78643K 5 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 36 159K 159K 78643K 36 0
exec 0 0K 1K 78643K 234 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 120 22K 31K 78643K 1560 0
UVM aobj 29 2K 2K 78643K 29 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 38 0
NDP 10 0K 0K 78643K 20 0
temp 103 3012K 3079K 78643K 5529 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 12 0 6 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtpcb 80 30 0 27 1 0 1 1 0 8 0
rtentry 112 69 0 25 2 0 2 2 0 8 0
unpcb 120 275 0 264 1 0 1 1 0 8 0
syncache 264 5 0 5 2 2 0 1 0 8 0
tcpqe 32 157 0 157 1 1 0 1 0 8 0
tcpcb 544 97 0 93 1 0 1 1 0 8 0
inpcb 280 255 0 247 2 1 1 2 0 8 0
rttmr 72 2 0 2 2 1 1 1 0 8 1
nd6 48 6 0 2 1 0 1 1 0 8 0
ppxss 1128 3 0 3 2 1 1 1 0 8 1
pffrag 232 2 0 2 1 1 0 1 0 482 0
pffrnode 88 2 0 2 1 1 0 1 0 8 0
pffrent 40 8 0 8 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 31 0 0 1 0 1 1 0 8 0
pfstkey 112 31 0 0 1 0 1 1 0 8 0
pfstate 328 31 0 0 3 0 3 3 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 256 278 0 63 15 0 15 15 0 8 1
art_table 32 279 0 63 2 0 2 2 0 8 0
art_node 16 68 0 28 1 0 1 1 0 8 0
sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0
semupl 112 2 0 2 1 1 0 1 0 8 0
semapl 112 54 0 44 1 0 1 1 0 8 0
shmpl 112 27 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 1609 0 201 46 0 46 46 0 8 0
ffsino 272 1609 0 201 95 0 95 95 0 8 0
nchpl 144 2039 0 433 61 0 61 61 0 8 1
uvmvnodes 72 1840 0 0 34 0 34 34 0 8 0
vnodes 208 1840 0 0 97 0 97 97 0 8 0
namei 1024 5709 0 5709 1 0 1 1 0 8 1
percpumem 16 30 0 0 1 0 1 1 0 8 0
scxspl 192 5846 0 5846 8 1 7 7 0 8 7
plimitpl 152 28 0 20 1 0 1 1 0 8 0
sigapl 432 374 0 358 3 1 2 3 0 8 0
futexpl 56 3587 0 3587 1 0 1 1 0 8 1
knotepl 112 214 0 195 1 0 1 1 0 8 0
kqueuepl 104 144 0 142 1 0 1 1 0 8 0
pipepl 160 414 0 395 2 0 2 2 0 8 1
fdescpl 488 375 0 358 3 0 3 3 0 8 0
filepl 152 2819 0 2716 6 0 6 6 0 8 2
lockfpl 104 64 0 63 1 0 1 1 0 8 0
lockfspl 48 23 0 22 1 0 1 1 0 8 0
sessionpl 112 19 0 8 1 0 1 1 0 8 0
pgrppl 48 19 0 8 1 0 1 1 0 8 0
ucredpl 96 105 0 96 1 0 1 1 0 8 0
zombiepl 144 358 0 358 1 0 1 1 0 8 1
processpl 896 391 0 358 4 0 4 4 0 8 0
procpl 632 728 0 684 5 0 5 5 0 8 0
srpgc 64 2 0 2 1 0 1 1 0 8 1
sosppl 128 4 0 4 1 0 1 1 0 8 1
sockpl 384 568 0 546 4 0 4 4 0 8 1
mcl64k 65536 2 0 0 1 0 1 1 0 8 0
mcl16k 16384 2 0 0 1 0 1 1 0 8 0
mcl12k 12288 3 0 0 1 0 1 1 0 8 0
mcl9k 9216 4 0 0 1 0 1 1 0 8 0
mcl8k 8192 5 0 0 1 0 1 1 0 8 0
mcl4k 4096 8 0 0 1 0 1 1 0 8 0
mcl2k 2048 175 0 0 21 0 21 21 0 8 0
mtagpl 80 13 0 0 1 0 1 1 0 8 0
mbufpl 256 173 0 0 11 0 11 11 0 8 0
bufpl 280 6585 0 1340 375 0 375 375 0 8 0
anonpl 16 61296 0 42769 92 2 90 91 0 125 12
amapchunkpl 152 2236 0 2060 12 0 12 12 0 158 4
amappl16 192 1953 0 909 61 1 60 61 0 8 7
amappl15 184 60 0 57 1 0 1 1 0 8 0
amappl14 176 102 0 98 1 0 1 1 0 8 0
amappl13 168 33 0 31 2 1 1 1 0 8 0
amappl12 160 39 0 36 2 1 1 1 0 8 0
amappl11 152 60 0 44 1 0 1 1 0 8 0
amappl10 144 20 0 14 1 0 1 1 0 8 0
amappl9 136 623 0 618 1 0 1 1 0 8 0
amappl8 128 137 0 111 1 0 1 1 0 8 0
amappl7 120 114 0 100 1 0 1 1 0 8 0
amappl6 112 59 0 52 1 0 1 1 0 8 0
amappl5 104 167 0 154 1 0 1 1 0 8 0
amappl4 96 568 0 536 1 0 1 1 0 8 0
amappl3 88 289 0 278 1 0 1 1 0 8 0
amappl2 80 2021 0 1938 3 1 2 3 0 8 0
amappl1 72 18424 0 17961 26 16 10 21 0 8 1
amappl 80 1004 0 953 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 28 0 0 1 0 1 1 0 8 0
uaddrrnd 24 375 0 358 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 375 0 358 1 0 1 1 0 8 0
vmmpekpl 168 7239 0 7208 2 0 2 2 0 8 0
vmmpepl 168 54860 0 52520 142 3 139 139 0 357 37
vmsppl 368 374 0 358 2 0 2 2 0 8 0
pdppl 4096 757 0 716 6 0 6 6 0 8 0
pvpl 32 184630 0 162841 211 1 210 211 0 265 28
pmappl 232 374 0 358 2 1 1 2 0 8 0
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 164 0 3 5 0 5 5 0 8 0