panic: kernel diagnostic assertion "gkif != NULL" failed: file "/syzkaller/managers/main/kernel/sys/net/pf_if.c", line 943
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834915ef) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff834d0712,ffffffff834b7006,3af,ffffffff8342ede4) at __assert+0x29 sys/kern/subr_prf.c:-1
pfi_xcommit() at pfi_xcommit+0x29d
pfi_group_delmember(ffff8000002a1880) at pfi_group_delmember+0x63 sys/net/pf_if.c:402
if_delgroup(ffff8000015e4000,ffff8000002a1880) at if_delgroup+0x186 sys/net/if.c:3150
if_detach(ffff8000015e4000) at if_detach+0x36b sys/net/if.c:1317
pppacclose(100637d,2,2000,ffff80002a797248) at pppacclose+0x118 sys/net/if_pppx.c:1329
spec_close(ffff80002a84d530) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffff3006ccd0bd8,2,fffff30007ffd1a0,ffff80002a797248) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156
vn_closefile(fffff3006d469ae0,ffff80002a797248) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffff3006d469ae0,ffff80002a797248) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621
fdrop(fffff3006d469ae0,ffff80002a797248) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(fffff3006d469ae0,ffff80002a797248) at closef+0x190 sys/kern/kern_descrip.c:1265
fdfree(ffff80002a797248) at fdfree+0x115 sys/kern/kern_descrip.c:1196
end trace frame: 0xffff80002a84d790, 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
*cpu0: kernel diagnostic assertion "gkif != NULL" failed: file "/syzkaller/managers/main/kernel/sys/net/pf_if.c", line 943
ddb> show kasan
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834915ef) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff834d0712,ffffffff834b7006,3af,ffffffff8342ede4) at __assert+0x29 sys/kern/subr_prf.c:-1
pfi_xcommit() at pfi_xcommit+0x29d
pfi_group_delmember(ffff8000002a1880) at pfi_group_delmember+0x63 sys/net/pf_if.c:402
if_delgroup(ffff8000015e4000,ffff8000002a1880) at if_delgroup+0x186 sys/net/if.c:3150
if_detach(ffff8000015e4000) at if_detach+0x36b sys/net/if.c:1317
pppacclose(100637d,2,2000,ffff80002a797248) at pppacclose+0x118 sys/net/if_pppx.c:1329
spec_close(ffff80002a84d530) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffff3006ccd0bd8,2,fffff30007ffd1a0,ffff80002a797248) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156
vn_closefile(fffff3006d469ae0,ffff80002a797248) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffff3006d469ae0,ffff80002a797248) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621
fdrop(fffff3006d469ae0,ffff80002a797248) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(fffff3006d469ae0,ffff80002a797248) at closef+0x190 sys/kern/kern_descrip.c:1265
fdfree(ffff80002a797248) at fdfree+0x115 sys/kern/kern_descrip.c:1196
exit1(ffff80002a797248,0,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
sys_exit(ffff80002a797248,ffff80002a84d890,ffff80002a84d7e0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a84d890) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a84d890) at syscall+0x962 sys/arch/amd64/amd64/trap.c:791
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x76334d359360, count: -18
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80002a84d290
rbx 0xffff8000002a18b0
rdx 0
rcx 0
rax 0xffff80002a797248
r8 0x101010101010101
r9 0x8080808080808080
r10 0x657aee124a2511b3
r11 0x45230daed095f02c
r12 0
r13 0xffff8000016083e0
r14 0
r15 0x1
rip 0xffffffff82ffcad5 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80002a84d280
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor) tid=150771 pid=88229 tcnt=0 stat=onproc
flags process=1008<EXITING,SINGLEEXIT> proc=2000<WEXIT>
runpri=32, usrpri=77, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0xffff80002a797248 scnt=-1 ecnt=1
forw=0xffffffffffffffff, list=0xffff80002a761a00,0xffff80002a796fc0
process=0xffff8000380ded68 user=0xffff80002a848000, vmspace=0xfffff3006d145b98
estcpu=27, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND
60813 235844 61916 0 3 0x2 0 clonelk ifconfig
96659 385206 69314 0 3 0x2 0 clonelk ifconfig
16979 496491 26436 0 3 0x2 0 clonelk ifconfig
69314 494719 50643 0 3 0x100002 0x88 sigsusp sh
26436 40562 62741 0 3 0x100002 0x88 sigsusp sh
61916 4435 1826 0 3 0x100002 0x88 sigsusp sh
62741 463051 4006 0 3 0x2 0x80 wait syz-executor
50643 264201 4006 0 3 0x2 0x80 wait syz-executor
1826 435779 4006 0 3 0x2 0x80 wait syz-executor
37888 479071 4006 0 3 0x2 0x80 piperd syz-executor
78068 353316 4006 0 3 0x2 0x80 piperd syz-executor
71198 22888 4006 0 3 0x2 0x80 nanoslp syz-executor
4006 380700 71303 0 3 0x2 0x80 wait syz-executor
71303 330295 61931 0 3 0x100002 0x88 sigsusp ksh
61931 361580 66483 0 3 0x10 0x88 kqread sshd-session
66483 173689 27645 0 3 0x12 0x80 kqread sshd-session
56328 479211 1 0 3 0x100003 0x80 ttyin getty
27645 97223 1 0 3 0 0x88 kqread sshd
31951 483722 72641 73 3 0x1100010 0x80 kqread syslogd
72641 144439 1 0 3 0x100002 0x80 sbwait syslogd
22606 423436 1 0 3 0x100000 0x80 kqread resolvd
61703 350360 64092 77 3 0x100012 0x80 kqread dhcpleased
7009 90009 64092 77 3 0x100012 0x80 kqread dhcpleased
64092 151429 1 0 3 0 0x80 kqread dhcpleased
15200 7448 0 0 3 0x14000 0x200 bored smr
77509 283096 0 0 2 0x14000 0x200 zerothread
34656 106319 0 0 3 0x14000 0x200 aiodoned aiodoned
8948 30447 0 0 3 0x14000 0x200 syncer update
63732 322774 0 0 3 0x14000 0x200 cleaner cleaner
46200 435685 0 0 3 0x14000 0x200 reaper reaper
82828 199 0 0 3 0x14000 0x200 pgdaemon pagedaemon
41150 451598 0 0 3 0x14000 0x200 bored viomb
60343 217422 0 0 3 0x14000 0x40000200 acpi0 acpi0
39663 365906 0 0 3 0x14000 0x200 bored softnet0
55514 191824 0 0 3 0x14000 0x200 smrbar systqmp
33890 420786 0 0 3 0x14000 0x200 bored systq
51156 327260 0 0 3 0x14000 0x40000200 tmoslp softclock
11924 310894 0 0 3 0x14000 0x40000200 idle0
1 74119 0 0 3 0x2 0x80 wait init
0 0 -1 0 3 0x10000 0x200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11024 12098K 12359K 166960K 12324 0
pcb 17 14K 16K 166960K 114 0
rtable 183 7K 11K 166960K 1398 0
pf 26 12K 652K 166960K 136 0
ifaddr 32 5K 8K 166960K 183 0
ifgroup 39 1K 2K 166960K 186 0
sysctl 1 1K 9K 166960K 5 0
counters 32 17K 18K 166960K 71 0
ioctlops 0 0K 4K 166960K 85 0
iov 0 0K 20K 166960K 4 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1334 84K 84K 166960K 2057 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 4 0
VM map 2 1K 1K 166960K 2 0
sem 10 0K 0K 166960K 12 0
dirhash 24 4K 4K 166960K 24 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 17 61K 89K 166960K 772 0
proc 80 83K 100K 166960K 1450 0
subproc 72 4K 4K 166960K 396 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 4 0
in_multi 70 4K 6K 166960K 466 0
ether_multi 1 0K 0K 166960K 1 0
mrt 0 0K 0K 166960K 15 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 67 307K 307K 166960K 67 0
exec 0 0K 1K 166960K 813 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 188 161K 167K 166960K 7108 0
UVM aobj 5 2K 2K 166960K 5 0
pinsyscall 38 76K 93K 166960K 2742 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 7 0
NDP 13 0K 2K 166960K 128 0
temp 34 9110K 9130K 166960K 7919 0
kqueue 13 20K 22K 166960K 36 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 120 139 0 136 2 0 2 2 0 8 1
rtentry 136 475 0 397 4 0 4 4 0 8 0
unpcb 144 305 0 290 4 0 4 4 0 8 3
syncache 336 7 0 7 1 0 1 1 0 8 1
tcpcb 736 69 0 65 4 0 4 4 0 8 3
arp 96 84 0 72 1 0 1 1 0 8 0
inpcb 328 430 0 419 12 3 9 12 0 8 8
nd6 112 123 0 108 1 0 1 1 0 8 0
kcovpl 48 44 0 36 1 0 1 1 0 8 0
ppxss 1072 5 0 3 1 0 1 1 0 8 0
pfstscr 40 2 0 2 1 0 1 1 0 8 1
pffrag 232 3 0 1 1 0 1 1 0 482 0
pffrnode 88 3 0 1 1 0 1 1 0 8 0
pffrent 40 5 0 3 1 0 1 1 0 8 0
pfrktable 1344 15 0 15 1 0 1 1 0 8 1
pfanchor 1288 3 0 3 1 0 1 1 0 8 1
pfstkey 128 3 0 3 1 0 1 1 0 8 1
pfstate 384 2 0 2 1 0 1 1 0 8 1
pfrule 1360 2 0 2 1 0 1 1 0 8 1
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 1951 0 1599 32 1 31 32 0 8 4
art_table 40 1952 0 1599 6 0 6 6 0 8 1
art_node 32 475 0 402 1 0 1 1 0 8 0
sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1
semapl 72 10 0 2 1 0 1 1 0 8 0
shmpl 120 2 0 0 1 0 1 1 0 8 0
dirhash 1024 25 0 0 4 0 4 4 0 8 0
dino2pl 256 1881 0 315 99 0 99 99 0 8 0
ffsino 256 1881 0 315 99 0 99 99 0 8 0
nchpl 144 2225 0 388 69 0 69 69 0 8 0
rtmask 32 2 0 2 1 0 1 1 0 8 1
vnodes 216 2611 0 0 146 0 146 146 0 8 0
namei 1024 13425 0 13425 2 0 2 2 0 8 2
pfiaddrpl 120 5 0 5 1 0 1 1 0 8 1
kstatmem 264 93 0 74 2 0 2 2 0 8 0
scsiplug 72 1 0 1 1 0 1 1 0 8 1
scxspl 216 12829 0 12829 8 0 8 8 1 8 8
plimitpl 152 178 0 162 1 0 1 1 0 8 0
sigapl 424 995 0 953 6 0 6 6 0 8 1
knotepl 120 5048 0 5001 9 0 9 9 0 8 7
kqueuepl 184 48 0 39 1 0 1 1 0 8 0
pipepl 304 299 0 272 8 0 8 8 0 8 5
fdescpl 448 982 0 953 5 0 5 5 0 8 1
filepl 120 4406 0 4203 11 0 11 11 0 8 3
lockfpl 104 57 0 55 1 0 1 1 0 8 0
lockfspl 48 25 0 23 1 0 1 1 0 8 0
sessionpl 144 62 0 54 1 0 1 1 0 8 0
pgrppl 48 106 0 90 1 0 1 1 0 8 0
ucredpl 104 216 0 205 1 0 1 1 0 8 0
zombiepl 144 956 0 953 1 0 1 1 0 8 0
processpl 1160 995 0 953 4 0 4 4 0 8 0
procpl 664 1333 0 1291 6 0 6 6 0 8 2
sosppl 176 2 0 2 1 0 1 1 0 8 1
sockpl 552 881 0 852 12 2 10 12 0 8 7
mcl64k 65536 4 0 3 1 0 1 1 0 8 0
mcl8k 8192 4 0 4 1 0 1 1 0 8 1
mcl4k 4096 2603 0 2547 13 0 13 13 0 8 5
mcl2k 2048 817 0 816 1 0 1 1 0 8 0
mextrefs 64 147 0 147 1 0 1 1 0 8 1
mtagpl 96 4 0 4 1 0 1 1 0 8 1
mbufpl 256 8018 0 7917 11 0 11 11 0 8 1
bufpl 272 6952 0 736 415 0 415 415 0 8 0
anonpl 24 142395 0 139441 68 0 68 68 0 187 37
amapchunkpl 152 19693 0 19359 33 0 33 33 0 158 18
amappl16 200 2435 0 2423 31 4 27 27 0 8 24
amappl15 192 5 0 5 1 0 1 1 0 8 1
amappl14 184 811 0 807 1 0 1 1 0 8 0
amappl13 176 180 0 170 1 0 1 1 0 8 0
amappl12 168 1352 0 1327 2 0 2 2 0 8 0
amappl11 160 7 0 7 1 0 1 1 0 8 1
amappl10 152 55 0 45 1 0 1 1 0 8 0
amappl9 144 304 0 304 1 0 1 1 0 8 1
amappl8 136 235 0 231 1 0 1 1 0 8 0
amappl7 128 208 0 197 1 0 1 1 0 8 0
amappl6 120 485 0 477 1 0 1 1 0 8 0
amappl5 112 106 0 98 1 0 1 1 0 8 0
amappl4 104 357 0 342 1 0 1 1 0 8 0
amappl3 96 3488 0 3421 3 0 3 3 0 8 0
amappl2 88 965 0 897 2 0 2 2 0 8 0
amappl1 80 14909 0 14361 13 0 13 13 0 8 1
amappl 88 5842 0 5720 5 0 5 5 0 92 1
uvmvnodes 80 101 0 0 3 0 3 3 0 8 0
dma4096 4096 1 0 1 1 0 1 1 0 8 1
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma256 256 6 0 6 1 0 1 1 0 8 1
dma128 128 254 0 254 1 0 1 1 0 8 1
dma64 64 6 0 6 1 0 1 1 0 8 1
dma32 32 7 0 7 1 0 1 1 0 8 1
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 72 4 0 0 1 0 1 1 0 8 0
uaddrrnd 24 982 0 953 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 982 0 953 1 0 1 1 0 8 0
vmmpekpl 168 9664 0 9633 3 0 3 3 0 8 0
vmmpepl 168 72471 0 70916 94 0 94 94 0 357 18
vmsppl 368 981 0 953 4 0 4 4 0 8 1
rwobjpl 40 23563 0 22635 15 0 15 15 0 8 2
pdppl 4096 1971 0 1906 125 56 69 79 0 8 4
pvpl 32 384390 0 376865 131 0 131 131 0 265 55
pmappl 216 981 0 953 2 0 2 2 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 822 0 57 22 0 22 22 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(ffffffff834915ef) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff834d0712,ffffffff834b7006,3af,ffffffff8342ede4) at __assert+0x29 sys/kern/subr_prf.c:-1
pfi_xcommit() at pfi_xcommit+0x29d
pfi_group_delmember(ffff8000002a1880) at pfi_group_delmember+0x63 sys/net/pf_if.c:402
if_delgroup(ffff8000015e4000,ffff8000002a1880) at if_delgroup+0x186 sys/net/if.c:3150
if_detach(ffff8000015e4000) at if_detach+0x36b sys/net/if.c:1317
pppacclose(100637d,2,2000,ffff80002a797248) at pppacclose+0x118 sys/net/if_pppx.c:1329
spec_close(ffff80002a84d530) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffff3006ccd0bd8,2,fffff30007ffd1a0,ffff80002a797248) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156
vn_closefile(fffff3006d469ae0,ffff80002a797248) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffff3006d469ae0,ffff80002a797248) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621
fdrop(fffff3006d469ae0,ffff80002a797248) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(fffff3006d469ae0,ffff80002a797248) at closef+0x190 sys/kern/kern_descrip.c:1265
fdfree(ffff80002a797248) at fdfree+0x115 sys/kern/kern_descrip.c:1196
exit1(ffff80002a797248,0,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
sys_exit(ffff80002a797248,ffff80002a84d890,ffff80002a84d7e0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a84d890) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a84d890) at syscall+0x962 sys/arch/amd64/amd64/trap.c:791
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x76334d359360, count: -18
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834915ef) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff834d0712,ffffffff834b7006,3af,ffffffff8342ede4) at __assert+0x29 sys/kern/subr_prf.c:-1
pfi_xcommit() at pfi_xcommit+0x29d
pfi_group_delmember(ffff8000002a1880) at pfi_group_delmember+0x63 sys/net/pf_if.c:402
if_delgroup(ffff8000015e4000,ffff8000002a1880) at if_delgroup+0x186 sys/net/if.c:3150
if_detach(ffff8000015e4000) at if_detach+0x36b sys/net/if.c:1317
pppacclose(100637d,2,2000,ffff80002a797248) at pppacclose+0x118 sys/net/if_pppx.c:1329
spec_close(ffff80002a84d530) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffff3006ccd0bd8,2,fffff30007ffd1a0,ffff80002a797248) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156
vn_closefile(fffff3006d469ae0,ffff80002a797248) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(fffff3006d469ae0,ffff80002a797248) at vn_closefile+0x11d sys/kern/vfs_vnops.c:621
fdrop(fffff3006d469ae0,ffff80002a797248) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(fffff3006d469ae0,ffff80002a797248) at closef+0x190 sys/kern/kern_descrip.c:1265
fdfree(ffff80002a797248) at fdfree+0x115 sys/kern/kern_descrip.c:1196
exit1(ffff80002a797248,0,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
sys_exit(ffff80002a797248,ffff80002a84d890,ffff80002a84d7e0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a84d890) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80002a84d890) at syscall+0x962 sys/arch/amd64/amd64/trap.c:791
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x76334d359360, count: -18