syzbot

panic: trap type 4, code=0, pc=ffffffff81b2a7d0
Starting stack trace...
panic(ffffffff8331446b) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff80002a491e20) at kerntrap+0x29b sys/arch/amd64/amd64/trap.c:327
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
bpfdetach(ffff80000140a000) at bpfdetach+0x70 sys/net/bpf.c:1769
if_detach(ffff80000140a000) at if_detach+0x153 sys/net/if.c:1194
tun_clone_destroy(ffff80000140a000) at tun_clone_destroy+0x2d6 sys/net/if_tun.c:346

if_clone_destroy(ffff80002a4920e0) at if_clone_destroy+0x1d7 sys/net/if.c:1383
ifioctl(ffff800001482018,80206979,ffff80002a4920e0,ffff8000ffff4028) at ifioctl+0x5c5
sys_ioctl(ffff8000ffff4028,ffff80002a4922c0,ffff80002a492210) at sys_ioctl+0x5c3
syscall(ffff80002a4922c0) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a4922c0) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x5d30c685d80, count: 246
End of stack trace.