panic: kernel diagnostic assertion "(p->pfik_flagrefs == 0) || (p->pfik_flagrefs == 1)" failed: file "/syzkaller/managers/multicore/kernel/sys/net/pf_if.c", line 907
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
 420549  13315      0           0          0    1  syz-executor
*271244  60390      0           0  0x4000000    0K syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834c0d1e) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff834fb57a,ffffffff83554ea9,38b,ffffffff83471a09) at __assert+0x29 sys/kern/subr_prf.c:-1
pfi_clear_flags(ffff80003c485600,0) at pfi_clear_flags+0x41d sys/net/pf_if.c:893
pfioctl(14900,c028445a,ffff80003c485600,3,ffff80003c43a030) at pfioctl+0xf6a sys/net/pf_ioctl.c:3910
VOP_IOCTL(fffff8805d7826f8,c028445a,ffff80003c485600,3,fffff880097fd270,ffff80003c43a030) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
vn_ioctl(fffff88069816cb8,c028445a,ffff80003c485600,ffff80003c43a030) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
sys_ioctl(ffff80003c43a030,ffff80003c4857e0,ffff80003c485730) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff80003c4857e0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c4857e0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x547058ffa60, count: 5
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