panic: pool_do_get: art_table free list modified: page 0xfffffd8067d10000; item addr 0xfffffd8067d10010; offset 0x0=0x0 != 0x7fe238986de7cf58
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*165075 70024 0 0 0x4000000 0 syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff822252cd) at panic+0x15c sys/kern/subr_prf.c:207
pool_do_get(ffffffff825581b0,a,ffff800021481008) at pool_do_get+0x42a sys/kern/subr_pool.c:738
pool_get(ffffffff825581b0,a) at pool_get+0xb5 sys/kern/subr_pool.c:581
art_table_get(ffff80000007da40,fffffd80565ee8e8,1a) at art_table_get+0xac sys/net/art.c:708
art_insert(ffff80000007da40,fffffd805e372990,ffff80000002d824,20) at art_insert+0x155 sys/net/art.c:387
rtable_insert(0,ffff80000002d820,0,ffff8000009f19a0,1,fffffd8056acebd8) at rtable_insert+0x2b4 sys/net/rtable.c:554
rtrequest(1,ffff800021481328,1,ffff8000214813f0,0) at rtrequest+0x8be sys/net/route.c:941
rt_ifa_add(ffff800000a10a00,240404,ffff800000a10a58,0) at rt_ifa_add+0x25c sys/net/route.c:1130
rt_ifa_addlocal(ffff800000a10a00) at rt_ifa_addlocal+0x149 sys/net/route.c:1237
in_ifinit(ffff800000a46800,ffff800000a10a00,ffff800000a10a58,0) at in_ifinit+0x1cf sys/netinet/in.c:688
in_ioctl_change_ifaddr(8040691a,ffff800021481730,ffff800000a46800,1) at in_ioctl_change_ifaddr+0x68c sys/netinet/in.c:519
in_ioctl(8040691a,ffff800021481730,ffff800000a46800,1) at in_ioctl+0x2fb sys/netinet/in.c:246
ifioctl(fffffd805da86e18,8040691a,ffff800021481730,ffff80001d36dc48) at ifioctl+0xe60 sys/net/if.c:2290
end trace frame: 0xffff800021481830, 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_get: art_table free list modified: page 0xfffffd8067d10000; item addr 0xfffffd8067d10010; offset 0x0=0x0 != 0x7fe238986de7cf58
ddb> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic(ffffffff822252cd) at panic+0x15c sys/kern/subr_prf.c:207
pool_do_get(ffffffff825581b0,a,ffff800021481008) at pool_do_get+0x42a sys/kern/subr_pool.c:738
pool_get(ffffffff825581b0,a) at pool_get+0xb5 sys/kern/subr_pool.c:581
art_table_get(ffff80000007da40,fffffd80565ee8e8,1a) at art_table_get+0xac sys/net/art.c:708
art_insert(ffff80000007da40,fffffd805e372990,ffff80000002d824,20) at art_insert+0x155 sys/net/art.c:387
rtable_insert(0,ffff80000002d820,0,ffff8000009f19a0,1,fffffd8056acebd8) at rtable_insert+0x2b4 sys/net/rtable.c:554
rtrequest(1,ffff800021481328,1,ffff8000214813f0,0) at rtrequest+0x8be sys/net/route.c:941
rt_ifa_add(ffff800000a10a00,240404,ffff800000a10a58,0) at rt_ifa_add+0x25c sys/net/route.c:1130
rt_ifa_addlocal(ffff800000a10a00) at rt_ifa_addlocal+0x149 sys/net/route.c:1237
in_ifinit(ffff800000a46800,ffff800000a10a00,ffff800000a10a58,0) at in_ifinit+0x1cf sys/netinet/in.c:688
in_ioctl_change_ifaddr(8040691a,ffff800021481730,ffff800000a46800,1) at in_ioctl_change_ifaddr+0x68c sys/netinet/in.c:519
in_ioctl(8040691a,ffff800021481730,ffff800000a46800,1) at in_ioctl+0x2fb sys/netinet/in.c:246
ifioctl(fffffd805da86e18,8040691a,ffff800021481730,ffff80001d36dc48) at ifioctl+0xe60 sys/net/if.c:2290
sys_ioctl(ffff80001d36dc48,ffff800021481848,ffff800021481890) at sys_ioctl+0x4a1
syscall(ffff800021481910) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x8d62d1a59b0, count: -17
ddb> show registers
rdi 0xffffffff81008d67 db_enter+0x17
rsi 0x691b __ALIGN_SIZE+0x591b
rbp 0xffff800021480e70
rbx 0xffff800021480f20
rdx 0x691c __ALIGN_SIZE+0x591c
rcx 0xffff80001e42d000
rax 0xffff80001e42d000
r8 0xffff800021480e30
r9 0x1
r10 0xffff8000009f2c80
r11 0xa3ddce0f4a09972
r12 0x3000000008
r13 0xffff800021480e80
r14 0x100
r15 0x1
rip 0xffffffff81008d68 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800021480e60
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.1) pid=165075 stat=onproc
flags process=0 proc=4000000<THREAD>
pri=32, usrpri=52, nice=20
forw=0xffffffffffffffff, list=0xffff80001d36d288,0xffffffff82550f40
process=0xffff8000ffffbc10 user=0xffff80002147c000, vmspace=0xfffffd8069d87ab0
estcpu=36, cpticks=1, pctcpu=0.0
user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
70024 11712 60214 0 2 0 syz-executor.1
*70024 165075 60214 0 7 0x4000000 syz-executor.1
60214 62550 467 0 3 0x82 nanosleep syz-executor.1
90934 208174 467 0 3 0x82 nanosleep syz-executor.0
91559 210023 0 0 3 0x14200 bored sosplice
467 281007 70271 0 3 0x82 thrsleep syz-fuzzer
467 437974 70271 0 3 0x4000082 thrsleep syz-fuzzer
467 294140 70271 0 3 0x4000082 thrsleep syz-fuzzer
467 477918 70271 0 3 0x4000082 thrsleep syz-fuzzer
467 122143 70271 0 3 0x4000082 thrsleep syz-fuzzer
467 66187 70271 0 3 0x4000082 thrsleep syz-fuzzer
467 310891 70271 0 3 0x4000082 thrsleep syz-fuzzer
467 70777 70271 0 3 0x4000082 kqread syz-fuzzer
70271 493337 56497 0 3 0x10008a pause ksh
56497 517589 29526 0 3 0x92 select sshd
12056 296221 1 0 3 0x100083 ttyin getty
29526 480908 1 0 3 0x80 select sshd
99846 354443 89167 73 3 0x100090 kqread syslogd
89167 231188 1 0 3 0x100082 netio syslogd
43071 317812 1 77 2 0x100090 dhclient
40955 57285 1 0 3 0x80 poll dhclient
95891 221931 0 0 2 0x14200 zerothread
39389 365947 0 0 3 0x14200 aiodoned aiodoned
89259 112990 0 0 3 0x14200 syncer update
53402 74610 0 0 3 0x14200 cleaner cleaner
1875 166015 0 0 3 0x14200 reaper reaper
43992 115241 0 0 3 0x14200 pgdaemon pagedaemon
54445 393306 0 0 3 0x14200 bored crynlk
7729 377482 0 0 3 0x14200 bored crypto
39597 419395 0 0 3 0x40014200 acpi0 acpi0
35302 18140 0 0 3 0x14200 bored softnet
28465 455159 0 0 2 0x14200 systqmp
14498 324282 0 0 3 0x14200 bored systq
26453 19437 0 0 3 0x40014200 bored softclock
2125 23660 0 0 3 0x40014200 idle0
70318 270749 0 0 3 0x14200 bored smr
1 103301 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 9530 6371K 6920K 78643K 12174 0
pcb 13 8K 8K 78643K 220 0
rtable 97 3K 4K 78643K 562 0
ifaddr 90 17K 17K 78643K 232 0
counters 21 16K 16K 78643K 46 0
ioctlops 0 0K 2K 78643K 49 0
iov 0 0K 24K 78643K 199 0
mount 1 1K 1K 78643K 1 0
vnodes 1225 77K 77K 78643K 1799 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 5K 78643K 19 0
VM map 2 0K 0K 78643K 2 0
sem 12 0K 0K 78643K 437 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1794 195K 288K 78643K 12646 0
file desc 5 13K 25K 78643K 842 0
sigio 0 0K 0K 78643K 10 0
proc 50 38K 54K 78643K 521 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 119 0
in_multi 65 3K 3K 78643K 215 0
ether_multi 1 0K 0K 78643K 33 0
mrt 0 0K 0K 78643K 3 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 61 281K 281K 78643K 61 0
exec 0 0K 1K 78643K 326 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 121 70K 72K 78643K 3060 0
UVM aobj 50 2K 2K 78643K 58 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 162 0
NDP 15 0K 0K 78643K 54 0
temp 142 3018K 3098K 78643K 37669 0
kqueue 3 4K 14K 78643K 79 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 12 0 7 1 0 1 1 0 8 0
rtpcb 80 87 0 85 1 0 1 1 0 8 0
rtentry 112 112 0 74 2 0 2 2 0 8 0
unpcb 120 657 0 648 1 0 1 1 0 8 0
syncache 264 6 0 6 3 3 0 1 0 8 0
tcpqe 32 44 0 44 2 2 0 1 0 8 0
tcpcb 544 432 0 427 3 1 2 2 0 8 1
ipq 40 9 0 9 2 2 0 1 0 8 0
ipqe 40 151 0 151 2 2 0 1 0 8 0
inpcb 280 1200 0 1192 6 3 3 3 0 8 2
nd6 48 18 0 17 1 0 1 1 0 8 0
pkpcb 40 4 0 4 2 2 0 1 0 8 0
swfcl 56 2 0 0 1 0 1 1 0 8 0
ppxss 1128 5 0 5 2 2 0 1 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 537 0 360 18 5 13 16 0 8 0
art_table 32 539 0 360 3 0 3 3 0 8 0
art_table: pool(0xffffffff825581b0:art_table): free list modified: page 0xfffffd8067d10000; item ordinal 0; addr 0xfffffd8067d10010 (p 0xfffffd8067d10000); offset 0x0=0x0
art_table: pool(0xffffffff825581b0:art_table): page inconsistency: page 0xfffffd8067d10000; item ordinal 1; addr 0xffffa09609b747ee
art_node 16 111 0 73 1 0 1 1 0 8 0
sysvmsgpl 40 14 0 14 1 1 0 1 0 8 0
semupl 112 1 0 1 1 1 0 1 0 8 0
semapl 112 435 0 425 1 0 1 1 0 8 0
shmpl 112 56 0 8 2 0 2 2 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 2870 0 1470 46 0 46 46 0 8 0
ffsino 240 2870 0 1470 83 0 83 83 0 8 0
nchpl 144 4460 0 2858 60 0 60 60 0 8 0
uvmvnodes 72 3308 0 0 61 0 61 61 0 8 0
vnodes 208 3308 0 0 175 0 175 175 0 8 0
namei 1024 13931 0 13931 2 1 1 1 0 8 1
vcpupl 1984 7 0 2 1 0 1 1 0 8 0
vmpool 528 9 0 4 1 0 1 1 0 8 0
scxspl 192 14980 0 14980 1 0 1 1 0 8 1
plimitpl 152 98 0 91 1 0 1 1 0 8 0
sigapl 432 1007 0 994 2 0 2 2 0 8 0
futexpl 56 29884 0 29884 2 1 1 1 0 8 1
knotepl 112 181 0 162 1 0 1 1 0 8 0
kqueuepl 104 931 0 929 1 0 1 1 0 8 0
pipelkpl 16 638 0 628 1 0 1 1 0 8 0
pipepl 120 1276 0 1257 5 4 1 3 0 8 0
fdescpl 432 1008 0 994 2 0 2 2 0 8 0
filepl 120 9805 0 9709 16 11 5 8 0 8 2
lockfpl 104 308 0 306 1 0 1 1 0 8 0
lockfspl 48 110 0 108 1 0 1 1 0 8 0
sessionpl 112 19 0 9 1 0 1 1 0 8 0
pgrppl 48 25 0 15 1 0 1 1 0 8 0
ucredpl 96 966 0 958 1 0 1 1 0 8 0
zombiepl 144 994 0 993 1 0 1 1 0 8 0
processpl 896 1023 0 993 4 0 4 4 0 8 0
procpl 624 2035 0 1997 4 0 4 4 0 8 0
sosppl 128 11 0 11 2 2 0 1 0 8 0
sockpl 400 1960 0 1941 9 4 5 6 0 8 2
mcl64k 65536 91 0 91 2 1 1 1 0 8 1
mcl16k 16384 18 0 18 2 2 0 1 0 8 0
mcl12k 12288 27 0 27 2 1 1 1 0 8 1
mcl9k 9216 19 0 19 2 2 0 1 0 8 0
mcl8k 8192 38 0 38 2 1 1 1 0 8 1
mcl4k 4096 84 0 84 3 2 1 1 0 8 1
mcl2k2 2112 9 0 9 3 3 0 1 0 8 0
mcl2k 2048 66758 0 66714 18 12 6 14 0 8 0
mtagpl 80 85 0 23 3 1 2 2 0 8 0
mbufpl 256 113441 0 113177 40 20 20 31 0 8 0
bufpl 280 7418 0 2010 387 0 387 387 0 8 0
anonpl 16 121584 0 104998 105 21 84 84 0 107 15
amapchunkpl 152 5822 0 5693 32 24 8 20 0 158 0
amappl16 192 6103 0 5182 81 22 59 59 0 8 12
amappl15 184 54 0 50 1 0 1 1 0 8 0
amappl14 176 181 0 178 1 0 1 1 0 8 0
amappl13 168 58 0 58 1 1 0 1 0 8 0
amappl12 160 9 0 8 1 0 1 1 0 8 0
amappl11 152 55 0 44 1 0 1 1 0 8 0
amappl10 144 17 0 15 1 0 1 1 0 8 0
amappl9 136 838 0 832 1 0 1 1 0 8 0
amappl8 128 395 0 368 1 0 1 1 0 8 0
amappl7 120 102 0 91 1 0 1 1 0 8 0
amappl6 112 65 0 57 1 0 1 1 0 8 0
amappl5 104 170 0 159 1 0 1 1 0 8 0
amappl4 96 1251 0 1222 1 0 1 1 0 8 0
amappl3 88 292 0 284 1 0 1 1 0 8 0
amappl2 80 7252 0 7183 3 1 2 3 0 8 0
amappl1 72 27525 0 27099 25 15 10 20 0 8 0
amappl 80 2315 0 2271 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 57 0 8 1 0 1 1 0 8 0
uaddrrnd 24 1017 0 998 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1017 0 998 1 0 1 1 0 8 0
vmmpekpl 168 11224 0 11194 2 0 2 2 0 8 0
vmmpepl 168 127294 0 125270 157 57 100 147 0 357 6
vmsppl 272 1016 0 998 3 1 2 2 0 8 0
pdppl 4096 2040 0 2001 7 1 6 6 0 8 0
pvpl 32 342550 0 322893 230 32 198 200 0 265 37
pmappl 200 1016 0 998 4 2 2 2 0 8 1
extentpl 40 46 0 29 1 0 1 1 0 8 0
phpool 112 203 0 53 5 0 5 5 0 8 0