r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000000)='/sys/kernel/kexec_crash_loaded', 0x0, 0x0)
r1 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
sendfile(r1, r0, 0x0, 0x4)