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
*215350  45307      0           0  0x4000000    0  syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83414b52) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff83456460,ffffffff83441e18,38b,ffffffff833ce478) at __assert+0x29 sys/kern/subr_prf.c:-1
pfi_clear_flags(ffff8000334c6e60,0) at pfi_clear_flags+0x41d sys/net/pf_if.c:893
pfioctl(24900,c028445a,ffff8000334c6e60,3,ffff80002a78cd10) at pfioctl+0xf6a sys/net/pf_ioctl.c:3910
VOP_IOCTL(fffffd806e867610,c028445a,ffff8000334c6e60,3,fffffd8007ffd8f0,ffff80002a78cd10) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264
vn_ioctl(fffffd806ca42e20,c028445a,ffff8000334c6e60,ffff80002a78cd10) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537
sys_ioctl(ffff80002a78cd10,ffff8000334c7030,ffff8000334c6f80) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1
syscall(ffff8000334c7030) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff8000334c7030) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xbaeec550e20, 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>