panic: kernel diagnostic assertion "bpfilter_lookup(unit) == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/net/bpf.c", line 379
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*506009  68835      0           0  0x4000000    0K syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff8344df15) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff8348d70f,ffffffff8349aa24,17b,ffffffff834a4b02) at __assert+0x29 sys/kern/subr_prf.c:-1
bpfopen(11700,1,2000,ffff800039fc87f0) at bpfopen+0x2bd bpfilter_lookup sys/net/bpf.c:1832 [inline]
bpfopen(11700,1,2000,ffff800039fc87f0) at bpfopen+0x2bd sys/net/bpf.c:379
spec_open_clone(ffff80003c404e28) at spec_open_clone+0x277 sys/kern/spec_vnops.c:722
spec_open(ffff80003c404e28) at spec_open+0x319 sys/kern/spec_vnops.c:148
VOP_OPEN(fffffd806ea30ce8,1,fffffd80097fd3a8,ffff800039fc87f0) at VOP_OPEN+0x8b sys/kern/vfs_vops.c:138
vn_open(ffff80003c405078,201,0) at vn_open+0x7a5 sys/kern/vfs_vnops.c:183
doopenat(ffff800039fc87f0,ffffff9c,200000000440,200,0,0,fc7d3cd3206de058) at doopenat+0x35b sys/kern/vfs_syscalls.c:1155
sys_openat(ffff800039fc87f0,ffff80003c405330,ffff80003c405280) at sys_openat+0x58 sys/kern/vfs_syscalls.c:1094
syscall(ffff80003c405330) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c405330) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x66e1d2b3c90, count: 3
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