panic: kernel diagnostic assertion "(p->pfik_flagrefs == 0) || (p->pfik_flagrefs == 1)" failed: file "/syzkaller/managers/main/kernel/sys/net/pf_if.c", line 907
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*250768 83534 0 0 0x4000000 0 syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83419d82) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff834577f4,ffffffff8343bb5c,38b,ffffffff833c7c71) at __assert+0x29 sys/kern/subr_prf.c:-1
pfi_clear_flags(ffff80003a121ad0,0) at pfi_clear_flags+0x41d sys/net/pf_if.c:893
pfioctl(14900,c028445a,ffff80003a121ad0,3,ffff8000398ee2c0) at pfioctl+0xf6a sys/net/pf_ioctl.c:3910
VOP_IOCTL(fffffd806b084ea0,c028445a,ffff80003a121ad0,3,fffffd8007ffd820,ffff8000398ee2c0) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd807a9b7a60,c028445a,ffff80003a121ad0,ffff8000398ee2c0) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff8000398ee2c0,ffff80003a121ca0,ffff80003a121bf0) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80003a121ca0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003a121ca0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x925c7cd3c10, count: 5
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
*cpu0: kernel diagnostic assertion "(p->pfik_flagrefs == 0) || (p->pfik_flagrefs == 1)" failed: file "/syzkaller/managers/main/kernel/sys/net/pf_if.c", line 907
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83419d82) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff834577f4,ffffffff8343bb5c,38b,ffffffff833c7c71) at __assert+0x29 sys/kern/subr_prf.c:-1
pfi_clear_flags(ffff80003a121ad0,0) at pfi_clear_flags+0x41d sys/net/pf_if.c:893
pfioctl(14900,c028445a,ffff80003a121ad0,3,ffff8000398ee2c0) at pfioctl+0xf6a sys/net/pf_ioctl.c:3910
VOP_IOCTL(fffffd806b084ea0,c028445a,ffff80003a121ad0,3,fffffd8007ffd820,ffff8000398ee2c0) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd807a9b7a60,c028445a,ffff80003a121ad0,ffff8000398ee2c0) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff8000398ee2c0,ffff80003a121ca0,ffff80003a121bf0) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80003a121ca0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003a121ca0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x925c7cd3c10, count: -10
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80003a121680
rbx 0xffff80000040ba00
rdx 0xffff8000015d7a00
rcx 0
rax 0xffff8000398ee2c0
r8 0x101010101010101
r9 0x8080808080808080
r10 0xf0babed6fb5ae825
r11 0x4c1d68fbb0a86ce2
r12 0
r13 0x2
r14 0
r15 0x1
rip 0xffffffff82d72bf5 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80003a121670
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor) tid=250768 pid=83534 tcnt=2 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=32, usrpri=50, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff8000398efa18,0xffff80002a7e1a30
process=0xffff80002f0bd698 user=0xffff80003a11c000, vmspace=0xfffffd806cb0c5d0
estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
86160 518712 39949 0 2 0 syz-executor
86160 96669 39949 0 3 0x4000080 ttyin syz-executor
83534 163447 86526 0 2 0 syz-executor
*83534 250768 86526 0 7 0x4000000 syz-executor
6881 408785 64926 0 2 0 syz-executor
6881 15677 64926 0 2 0x4000000 syz-executor
13478 435430 48859 0 3 0x80 nanoslp syz-executor
13478 21071 48859 0 3 0x4000080 kqread syz-executor
13478 97318 48859 0 3 0x4000080 fsleep syz-executor
56401 276094 31039 0 2 0 syz-executor
56401 226657 31039 0 2 0x4000000 syz-executor
56401 156984 31039 0 3 0x4000080 fsleep syz-executor
79986 424927 78537 60929 3 0x90 nanoslp syz-executor
79986 511931 78537 60929 3 0x4000090 pipewr syz-executor
79986 50630 78537 60929 3 0x4000090 fsleep syz-executor
98556 69911 77942 0 3 0x90 nanoslp syz-executor
98556 159053 77942 0 3 0x4000090 kqpoll syz-executor
98556 163395 77942 0 3 0x4000090 fsleep syz-executor
31039 68510 35659 0 3 0x82 nanoslp syz-executor
49771 499746 0 0 3 0x14200 acct acct
39949 465537 35659 0 2 0xc82 syz-executor
10481 432162 35659 0 2 0x2 syz-executor
48859 461769 35659 0 3 0x82 nanoslp syz-executor
86526 342663 35659 0 2 0xc82 syz-executor
78537 6839 35659 0 3 0x82 nanoslp syz-executor
77942 59266 35659 0 3 0x82 nanoslp syz-executor
64926 307751 35659 0 3 0x82 nanoslp syz-executor
35659 45559 7996 0 3 0x82 kqread syz-executor
7996 28068 18880 0 3 0x10008a sigsusp ksh
18880 8471 59102 0 3 0x98 kqread sshd-session
59102 452956 5511 0 3 0x92 kqread sshd-session
37886 519462 1 0 3 0x100083 ttyin getty
5511 228643 1 0 3 0x88 kqread sshd
50650 495333 62067 73 3 0x1100090 kqread syslogd
62067 321186 1 0 3 0x100082 sbwait syslogd
41205 234109 1 0 3 0x100080 kqread resolvd
35090 326518 55236 77 3 0x100092 kqread dhcpleased
198 144732 55236 77 3 0x100092 kqread dhcpleased
55236 28643 1 0 3 0x80 kqread dhcpleased
68376 155875 0 0 3 0x14200 bored smr
29141 459730 0 0 2 0x14200 zerothread
39960 69544 0 0 3 0x14200 aiodoned aiodoned
64226 8578 0 0 3 0x14200 syncer update
65025 259174 0 0 3 0x14200 cleaner cleaner
37713 170087 0 0 3 0x14200 reaper reaper
16626 450173 0 0 3 0x14200 pgdaemon pagedaemon
39799 142488 0 0 3 0x14200 bored viomb
31028 115639 0 0 3 0x40014200 acpi0 acpi0
79049 301137 0 0 3 0x14200 bored softnet0
44378 224174 0 0 3 0x14200 bored systqmp
47453 108567 0 0 3 0x14200 bored systq
67451 401774 0 0 3 0x40014200 tmoslp softclock
47322 314007 0 0 3 0x40014200 idle0
1 456574 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 11057 12171K 12516K 166960K 12754 0
pcb 17 14K 20K 166960K 338 0
rtable 185 10K 11K 166960K 518 0
pf 31 13K 93K 166960K 304 0
ifaddr 30 5K 7K 166960K 72 0
ifgroup 38 1K 2K 166960K 100 0
sysctl 4 1K 9K 166960K 12 0
counters 30 17K 18K 166960K 58 0
ioctlops 0 0K 4K 166960K 193 0
iov 0 0K 16K 166960K 32 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1357 85K 86K 166960K 2203 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 14 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 1K 166960K 122 0
dirhash 12 2K 2K 166960K 24 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 17 61K 240K 166960K 831 0
sigio 0 0K 0K 166960K 14 0
proc 63 67K 75K 166960K 601 0
subproc 72 4K 4K 166960K 90 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 2 0K 0K 166960K 110 0
in_multi 62 4K 7K 166960K 142 0
ether_multi 1 0K 0K 166960K 5 0
mrt 2 0K 0K 166960K 22 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 235 1049K 1049K 166960K 235 0
exec 0 0K 1K 166960K 451 0
fusefs mount 1 32K 32K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 225 143K 165K 166960K 8937 0
UVM aobj 34 4K 4K 166960K 37 0
pinsyscall 38 76K 94K 166960K 1961 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 58 0
NDP 8 0K 1K 166960K 48 0
temp 59 9071K 9196K 166960K 36003 0
kqueue 15 24K 30K 166960K 125 0
SYN cache 2 16K 16K 166960K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 83 0 80 1 0 1 1 0 8 0
rtentry 136 142 0 76 4 0 4 4 0 8 0
unpcb 144 428 0 409 4 0 4 4 0 8 3
syncache 336 9 0 9 2 1 1 1 0 8 1
tcpcb 736 214 0 209 7 0 7 7 0 8 6
arp 96 24 0 10 1 0 1 1 0 8 0
ipq 40 1 0 0 1 0 1 1 0 8 0
ipqe 40 2 0 1 1 0 1 1 0 8 0
inpcb 328 847 0 838 18 9 9 18 0 8 8
nd6 112 31 0 18 1 0 1 1 0 8 0
pkpcb 40 5 0 5 1 0 1 1 0 8 1
kcovpl 48 10 0 2 1 0 1 1 0 8 0
ppxss 1072 19 0 19 1 0 1 1 0 8 1
pppxif 1416 1 0 1 1 0 1 1 0 8 1
pfstscr 40 8 0 6 1 0 1 1 0 8 0
pffrag 232 10 0 4 2 1 1 1 0 482 0
pffrnode 88 9 0 3 2 1 1 1 0 8 0
pffrent 40 80 0 74 2 1 1 1 0 8 0
pfrktable 1344 9 0 4 2 1 1 1 0 8 0
pfanchor 1288 47 0 1 4 0 4 4 0 8 0
pftag 88 2 0 2 2 1 1 1 0 8 1
pfstitem 24 6 0 0 1 0 1 1 0 8 0
pfstkey 128 12 0 6 1 0 1 1 0 8 0
pfstate 384 6 0 3 1 0 1 1 0 8 0
pfrule 1360 14 0 13 2 1 1 1 0 8 0
art_heap8 4096 2 0 0 2 0 2 2 0 8 0
art_heap4 256 589 0 285 29 0 29 29 0 8 6
art_table 40 591 0 285 5 0 5 5 0 8 0
art_node 32 140 0 81 1 0 1 1 0 8 0
sysvmsgpl 40 6 0 4 1 0 1 1 0 8 0
semapl 112 83 0 73 1 0 1 1 0 8 0
shmpl 112 34 0 3 1 0 1 1 0 8 0
dirhash 1024 25 0 8 3 0 3 3 0 8 0
dino2pl 256 2853 0 1394 92 0 92 92 0 8 0
ffsino 256 2854 0 1394 92 0 92 92 0 8 0
nchpl 144 3976 0 2279 64 0 64 64 0 8 0
rtmask 32 6 0 6 1 0 1 1 0 8 1
vnodes 216 3446 0 0 192 0 192 192 0 8 0
namei 1024 13531 0 13529 2 1 1 2 0 8 0
pfiaddrpl 120 2 0 0 1 0 1 1 0 8 0
kstatmem 264 57 0 40 2 0 2 2 0 8 0
scsiplug 72 2 0 2 2 1 1 1 0 8 1
scxspl 216 12137 0 12137 9 7 2 8 1 8 2
plimitpl 152 180 0 163 1 0 1 1 0 8 0
sigapl 424 1107 0 1064 7 1 6 6 0 8 1
knotepl 120 28014 0 27960 30 15 15 17 0 8 13
kqueuepl 184 290 0 278 4 0 4 4 0 8 3
pipepl 304 197 0 169 5 0 5 5 0 8 2
fdescpl 448 1093 0 1064 5 1 4 5 0 8 0
filepl 120 6937 0 6714 14 1 13 13 0 8 5
lockfpl 104 366 0 363 2 0 2 2 0 8 1
lockfspl 48 163 0 160 1 0 1 1 0 8 0
sessionpl 144 55 0 46 1 0 1 1 0 8 0
pgrppl 48 74 0 57 1 0 1 1 0 8 0
ucredpl 104 1328 0 1312 1 0 1 1 0 8 0
zombiepl 144 1064 0 1064 1 0 1 1 0 8 1
processpl 1152 1107 0 1064 4 0 4 4 0 8 0
procpl 664 2064 0 2010 7 1 6 6 0 8 0
sockpl 552 1460 0 1429 17 6 11 16 0 8 8
mcl64k 65536 137 0 135 2 1 1 1 0 8 0
mcl16k 16384 1 0 1 1 1 0 1 0 8 0
mcl8k 8192 7 0 7 2 1 1 1 0 8 1
mcl4k 4096 3469 0 3419 16 7 9 14 0 8 2
mcl2k 2048 649 0 647 4 0 4 4 0 8 3
mtagpl 96 16 0 10 1 0 1 1 0 8 0
mbufpl 256 12448 0 12201 19 1 18 18 0 8 2
bufpl 280 4624 0 105 323 0 323 323 0 8 0
anonpl 24 173668 0 170388 54 9 45 45 0 187 19
amapchunkpl 152 29734 0 29255 48 15 33 35 0 158 13
amappl16 200 2903 0 2871 18 6 12 15 0 8 8
amappl15 192 20 0 20 1 1 0 1 0 8 0
amappl14 184 430 0 429 1 0 1 1 0 8 0
amappl13 176 119 0 109 1 0 1 1 0 8 0
amappl12 168 1338 0 1310 2 0 2 2 0 8 0
amappl11 160 8 0 8 1 1 0 1 0 8 0
amappl10 152 80 0 70 1 0 1 1 0 8 0
amappl9 144 267 0 266 2 1 1 1 0 8 0
amappl8 136 124 0 122 1 0 1 1 0 8 0
amappl7 128 148 0 136 1 0 1 1 0 8 0
amappl6 120 179 0 177 1 0 1 1 0 8 0
amappl5 112 97 0 88 1 0 1 1 0 8 0
amappl4 104 271 0 255 1 0 1 1 0 8 0
amappl3 96 5762 0 5651 5 1 4 4 0 8 0
amappl2 88 534 0 479 2 0 2 2 0 8 0
amappl1 80 12339 0 11785 16 1 15 15 0 8 3
amappl 88 8081 0 7918 5 0 5 5 0 92 0
uvmvnodes 80 121 0 0 3 0 3 3 0 8 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 255 0 255 2 1 1 1 0 8 1
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 20 0 19 1 0 1 1 0 8 0
aobjpl 72 36 0 3 1 0 1 1 0 8 0
uaddrrnd 24 1093 0 1064 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 1093 0 1064 1 0 1 1 0 8 0
vmmpekpl 168 9962 0 9920 3 0 3 3 0 8 0
vmmpepl 168 74424 0 72631 93 2 91 91 0 357 10
vmsppl 368 1092 0 1064 4 1 3 4 0 8 0
rwobjpl 40 21571 0 20560 13 0 13 13 0 8 2
pdppl 4096 2192 0 2128 104 38 66 80 0 8 2
pvpl 32 483073 0 474061 145 20 125 125 0 265 38
pmappl 216 1092 0 1064 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 391 0 56 10 0 10 10 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83419d82) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff834577f4,ffffffff8343bb5c,38b,ffffffff833c7c71) at __assert+0x29 sys/kern/subr_prf.c:-1
pfi_clear_flags(ffff80003a121ad0,0) at pfi_clear_flags+0x41d sys/net/pf_if.c:893
pfioctl(14900,c028445a,ffff80003a121ad0,3,ffff8000398ee2c0) at pfioctl+0xf6a sys/net/pf_ioctl.c:3910
VOP_IOCTL(fffffd806b084ea0,c028445a,ffff80003a121ad0,3,fffffd8007ffd820,ffff8000398ee2c0) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd807a9b7a60,c028445a,ffff80003a121ad0,ffff8000398ee2c0) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff8000398ee2c0,ffff80003a121ca0,ffff80003a121bf0) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80003a121ca0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003a121ca0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x925c7cd3c10, count: -10
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83419d82) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff834577f4,ffffffff8343bb5c,38b,ffffffff833c7c71) at __assert+0x29 sys/kern/subr_prf.c:-1
pfi_clear_flags(ffff80003a121ad0,0) at pfi_clear_flags+0x41d sys/net/pf_if.c:893
pfioctl(14900,c028445a,ffff80003a121ad0,3,ffff8000398ee2c0) at pfioctl+0xf6a sys/net/pf_ioctl.c:3910
VOP_IOCTL(fffffd806b084ea0,c028445a,ffff80003a121ad0,3,fffffd8007ffd820,ffff8000398ee2c0) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd807a9b7a60,c028445a,ffff80003a121ad0,ffff8000398ee2c0) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff8000398ee2c0,ffff80003a121ca0,ffff80003a121bf0) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff80003a121ca0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003a121ca0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x925c7cd3c10, count: -10