panic: pool_do_put: mbufpl: double pool_put: 0xfffffd80345d0000
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() at panic+0x15c sys/kern/subr_prf.c:207
pool_do_put(ffffffff8256d040,fffffd80345d0000) at pool_do_put+0x31f pr_find_pagehead sys/kern/subr_pool.c:311 [inline]
pool_do_put(ffffffff8256d040,fffffd80345d0000) at pool_do_put+0x31f sys/kern/subr_pool.c:839
pool_put(ffffffff8256d040,fffffd80345d0000) at pool_put+0x4b sys/kern/subr_pool.c:802
m_free(fffffd80345d0000) at m_free+0x119 sys/kern/uipc_mbuf.c:459
ml_purge(ffff800014946178) at ml_purge+0x50 m_freem sys/kern/uipc_mbuf.c:538 [inline]
ml_purge(ffff800014946178) at ml_purge+0x50 sys/kern/uipc_mbuf.c:1628
ifq_purge(ffff800000a69a88) at ifq_purge+0x97 sys/net/ifq.c:423
tapclose(5d00,7,2000,ffff8000ffff8290) at tapclose+0xed tun_dev_close sys/net/if_tun.c:454 [inline]
tapclose(5d00,7,2000,ffff8000ffff8290) at tapclose+0xed sys/net/if_tun.c:433
spec_close(ffff800014946290) at spec_close+0x311 sys/kern/spec_vnops.c:555
VOP_CLOSE(fffffd803a689680,7,fffffd803f7c69c0,ffff8000ffff8290) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175
vn_closefile(fffffd802d5fd448,ffff8000ffff8290) at vn_closefile+0xd3 vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffffd802d5fd448,ffff8000ffff8290) at vn_closefile+0xd3 sys/kern/vfs_vnops.c:610
fdrop(fffffd802d5fd448,ffff8000ffff8290) at fdrop+0xc2 sys/kern/kern_descrip.c:1273
closef(fffffd802d5fd448,ffff8000ffff8290) at closef+0x118 sys/kern/kern_descrip.c:1257
fdfree(ffff8000ffff8290) at fdfree+0x100 sys/kern/kern_descrip.c:1189
end trace frame: 0xffff8000149464e0, count: 0
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_do_put: mbufpl: double pool_put: 0xfffffd80345d0000
ddb> 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_do_put(ffffffff8256d040,fffffd80345d0000) at pool_do_put+0x31f pr_find_pagehead sys/kern/subr_pool.c:311 [inline]
pool_do_put(ffffffff8256d040,fffffd80345d0000) at pool_do_put+0x31f sys/kern/subr_pool.c:839
pool_put(ffffffff8256d040,fffffd80345d0000) at pool_put+0x4b sys/kern/subr_pool.c:802
m_free(fffffd80345d0000) at m_free+0x119 sys/kern/uipc_mbuf.c:459
ml_purge(ffff800014946178) at ml_purge+0x50 m_freem sys/kern/uipc_mbuf.c:538 [inline]
ml_purge(ffff800014946178) at ml_purge+0x50 sys/kern/uipc_mbuf.c:1628
ifq_purge(ffff800000a69a88) at ifq_purge+0x97 sys/net/ifq.c:423
tapclose(5d00,7,2000,ffff8000ffff8290) at tapclose+0xed tun_dev_close sys/net/if_tun.c:454 [inline]
tapclose(5d00,7,2000,ffff8000ffff8290) at tapclose+0xed sys/net/if_tun.c:433
spec_close(ffff800014946290) at spec_close+0x311 sys/kern/spec_vnops.c:555
VOP_CLOSE(fffffd803a689680,7,fffffd803f7c69c0,ffff8000ffff8290) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175
vn_closefile(fffffd802d5fd448,ffff8000ffff8290) at vn_closefile+0xd3 vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffffd802d5fd448,ffff8000ffff8290) at vn_closefile+0xd3 sys/kern/vfs_vnops.c:610
fdrop(fffffd802d5fd448,ffff8000ffff8290) at fdrop+0xc2 sys/kern/kern_descrip.c:1273
closef(fffffd802d5fd448,ffff8000ffff8290) at closef+0x118 sys/kern/kern_descrip.c:1257
fdfree(ffff8000ffff8290) at fdfree+0x100 sys/kern/kern_descrip.c:1189
exit1(ffff8000ffff8290,19,1) at exit1+0x32f sys/kern/kern_exit.c:196
postsig(ffff8000ffff8290,19) at postsig+0x4a6 sigexit sys/kern/kern_sig.c:1499 [inline]
postsig(ffff8000ffff8290,19) at postsig+0x4a6 sys/kern/kern_sig.c:1431
userret(ffff8000ffff8290) at userret+0x159 sys/kern/kern_sig.c:1889
syscall(ffff800014946710) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:115 [inline]
syscall(ffff800014946710) at syscall+0x42e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffbd9e0, count: -19
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff800014945f20
rbx 0xffff800014945fd0
rdx 0x2
rcx 0
rax 0
r8 0xffff800014945ee0
r9 0x1
r10 0
r11 0xd28a1a68e3274691
r12 0x3000000008
r13 0xffff800014945f30
r14 0x100
r15 0x1
rip 0xffffffff81790a28 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800014945f10
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.0) pid=489386 stat=onproc
flags process=a<EXEC,EXITING> proc=2000<WEXIT>
pri=17, usrpri=78, nice=20
forw=0xffffffffffffffff, list=0xffff8000ffff8518,0xffff8000ffff27c0
process=0xffff8000148a2700 user=0xffff800014941000, vmspace=0xfffffd803f012330
estcpu=28, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
78478 414392 41470 0 3 0x80 nanosleep syz-executor.1
78478 508081 41470 0 3 0x4000080 fsleep syz-executor.1
78478 366830 41470 0 3 0x4000080 fsleep syz-executor.1
10637 470337 1 0 3 0x100083 ttyin getty
71666 500376 0 0 3 0x14200 bored sosplice
41470 158961 22075 0 3 0x82 nanosleep syz-executor.1
22075 212949 81425 0 3 0x82 thrsleep syz-fuzzer
22075 462058 81425 0 3 0x4000082 thrsleep syz-fuzzer
22075 441704 81425 0 2 0x4000082 syz-fuzzer
22075 357477 81425 0 3 0x4000082 thrsleep syz-fuzzer
22075 187977 81425 0 3 0x4000082 thrsleep syz-fuzzer
22075 501216 81425 0 3 0x4000082 thrsleep syz-fuzzer
22075 393413 81425 0 3 0x4000082 thrsleep syz-fuzzer
22075 188188 81425 0 3 0x4000082 thrsleep syz-fuzzer
81425 341975 77219 0 3 0x10008a pause ksh
77219 58173 96014 0 3 0x92 select sshd
96014 33192 1 0 3 0x80 select sshd
40435 317789 7219 73 2 0x100010 syslogd
7219 52671 1 0 3 0x100082 netio syslogd
97337 398796 1 77 3 0x100090 poll dhclient
97687 7141 1 0 3 0x80 poll dhclient
76172 58598 0 0 2 0x14200 zerothread
48822 231007 0 0 3 0x14200 aiodoned aiodoned
65015 371373 0 0 3 0x14200 syncer update
85779 259849 0 0 3 0x14200 cleaner cleaner
60135 462362 0 0 3 0x14200 reaper reaper
71757 497725 0 0 3 0x14200 pgdaemon pagedaemon
73111 432427 0 0 3 0x14200 bored crynlk
32804 498961 0 0 3 0x14200 bored crypto
32800 369254 0 0 3 0x40014200 acpi0 acpi0
43162 81439 0 0 2 0x14200 softnet
46138 444186 0 0 3 0x14200 bored systqmp
29222 268218 0 0 3 0x14200 bored systq
38573 154740 0 0 3 0x40014200 bored softclock
18570 66551 0 0 3 0x40014200 idle0
20855 344836 0 0 3 0x14200 bored smr
1 54485 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 9507 6349K 6792K 78643K 11218 0
pcb 13 8K 8K 78643K 74 0
rtable 86 3K 4K 78643K 307 0
ifaddr 71 14K 16K 78643K 126 0
counters 19 16K 16K 78643K 19 0
ioctlops 0 0K 2K 78643K 25 0
iov 0 0K 16K 78643K 58 0
mount 1 1K 1K 78643K 1 0
vnodes 1242 78K 78K 78643K 1485 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 39 0
VM map 8 2K 2K 78643K 8 0
sem 12 0K 0K 78643K 93 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1794 195K 288K 78643K 12646 0
file desc 5 13K 25K 78643K 389 0
sigio 0 0K 0K 78643K 12 0
proc 49 38K 54K 78643K 402 0
subproc 23 1K 2K 78643K 50 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 53 0
in_multi 68 3K 3K 78643K 101 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 60 265K 265K 78643K 60 0
exec 0 0K 1K 78643K 229 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 118 70K 72K 78643K 1795 0
UVM aobj 112 3K 3K 78643K 120 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 54 0
NDP 12 0K 0K 78643K 27 0
temp 133 3558K 3627K 78643K 5900 0
kqueue 0 0K 0K 78643K 1 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 7 0 4 1 0 1 1 0 8 0
rtpcb 96 43 0 41 1 0 1 1 0 8 0
rtentry 112 60 0 27 2 0 2 2 0 8 0
unpcb 120 197 0 189 1 0 1 1 0 8 0
syncache 280 6 0 6 3 3 0 1 0 8 0
tcpqe 32 265 0 265 2 2 0 1 0 8 0
tcpcb 640 115 0 111 3 1 2 2 0 8 1
ipq 40 8 0 8 1 1 0 1 0 8 0
ipqe 40 106 0 106 1 1 0 1 0 8 0
inpcb 280 417 0 410 4 2 2 3 0 8 1
nd6 48 7 0 5 1 0 1 1 0 8 0
pkpcb 40 2 0 2 1 1 0 1 0 8 0
ppxss 1128 4 0 4 2 2 0 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 291 0 118 16 2 14 15 0 8 1
art_table 32 292 0 118 2 0 2 2 0 8 0
art_node 16 59 0 29 1 0 1 1 0 8 0
sysvmsgpl 40 37 0 24 1 0 1 1 0 8 0
semupl 112 3 0 3 1 1 0 1 0 8 0
semapl 112 89 0 79 1 0 1 1 0 8 0
shmpl 112 118 0 8 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 1968 0 569 46 0 46 46 0 8 0
ffsino 240 1968 0 569 83 0 83 83 0 8 0
nchpl 144 2855 0 1234 61 0 61 61 0 8 0
uvmvnodes 72 2188 0 0 40 0 40 40 0 8 0
vnodes 208 2188 0 0 116 0 116 116 0 8 0
namei 1024 8470 0 8470 1 0 1 1 0 8 1
vcpupl 1984 6 0 0 1 0 1 1 0 8 0
vmpool 520 6 0 0 1 0 1 1 0 8 0
scsiplug 64 1 0 1 1 1 0 1 0 8 0
scxspl 208 7332 0 7332 8 7 1 7 0 8 1
plimitpl 152 154 0 147 1 0 1 1 0 8 0
sigapl 432 561 0 548 2 0 2 2 0 8 0
futexpl 56 10545 0 10543 1 0 1 1 0 8 0
knotepl 112 240 0 221 1 0 1 1 0 8 0
kqueuepl 104 256 0 254 1 0 1 1 0 8 0
pipepl 128 660 0 642 3 2 1 2 0 8 0
fdescpl 424 562 0 548 2 0 2 2 0 8 0
filepl 120 4913 0 4828 7 3 4 6 0 8 0
lockfpl 104 88 0 87 1 0 1 1 0 8 0
lockfspl 48 33 0 32 1 0 1 1 0 8 0
sessionpl 128 19 0 9 1 0 1 1 0 8 0
pgrppl 48 19 0 9 1 0 1 1 0 8 0
ucredpl 96 908 0 901 1 0 1 1 0 8 0
zombiepl 144 549 0 548 1 0 1 1 0 8 0
processpl 896 577 0 548 4 0 4 4 0 8 0
procpl 648 1067 0 1029 4 0 4 4 0 8 0
sosppl 144 2 0 2 1 1 0 1 0 8 0
sockpl 384 668 0 651 7 4 3 6 0 8 1
mcl64k 65536 44 0 44 4 4 0 3 0 8 0
mcl16k 16384 8 0 8 2 1 1 1 0 8 1
mcl12k 12288 13 0 13 3 2 1 1 0 8 1
mcl9k 9216 8 0 8 2 2 0 1 0 8 0
mcl8k 8192 22 0 22 2 1 1 1 0 8 1
mcl4k 4096 49 0 49 2 1 1 1 0 8 1
mcl2k2 2112 2 0 2 1 1 0 1 0 8 0
mcl2k 2048 69809 0 69779 18 13 5 15 0 8 0
mtagpl 80 16 0 15 2 1 1 1 0 8 0
mbufpl 256 113879 0 113830 26 14 12 22 0 8 4
pool(mbufpl): free list modified: page 0xfffffd80345d0000; item ordinal 9; addr 0xfffffd80345d0000 (p 0xfffffd803a271000); offset 0xc=0xdea4beef
bufpl 280 7465 0 2301 370 0 370 370 0 8 0
anonpl 16 80243 0 59767 103 5 98 98 0 62 14
amapchunkpl 152 2921 0 2773 13 3 10 11 0 158 1
amappl16 192 3345 0 2193 68 3 65 68 0 8 7
amappl15 184 166 0 164 1 0 1 1 0 8 0
amappl14 176 235 0 230 1 0 1 1 0 8 0
amappl13 168 1 0 0 1 0 1 1 0 8 0
amappl12 160 9 0 6 1 0 1 1 0 8 0
amappl11 152 48 0 36 1 0 1 1 0 8 0
amappl10 144 7 0 7 1 1 0 1 0 8 0
amappl9 136 558 0 555 1 0 1 1 0 8 0
amappl8 128 162 0 134 2 0 2 2 0 8 0
amappl7 120 42 0 38 1 0 1 1 0 8 0
amappl6 112 60 0 49 1 0 1 1 0 8 0
amappl5 104 142 0 129 1 0 1 1 0 8 0
amappl4 96 792 0 765 1 0 1 1 0 8 0
amappl3 88 125 0 120 1 0 1 1 0 8 0
amappl2 80 3902 0 3834 3 1 2 3 0 8 0
amappl1 72 19343 0 18931 26 16 10 20 0 8 0
amappl 80 1307 0 1261 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 64 119 0 8 2 0 2 2 0 8 0
uaddrrnd 24 568 0 548 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 568 0 548 1 0 1 1 0 8 0
vmmpekpl 168 8390 0 8364 2 0 2 2 0 8 0
vmmpepl 168 73213 0 70984 182 39 143 175 0 357 43
vmsppl 272 561 0 548 2 1 1 2 0 8 0
pdppl 4096 1142 0 1102 7 1 6 6 0 8 0
pvpl 32 223894 0 200349 231 4 227 227 0 265 37
pmappl 200 567 0 548 2 0 2 2 0 8 0
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 169 0 40 5 0 5 5 0 8 0