r0 = openat$procfs(0xffffffffffffff9c, &(0x7f0000000140)='/proc/locks\x00', 0x0, 0x0)
r1 = syz_init_net_socket$802154_dgram(0x24, 0x2, 0x0)
sendfile(r1, r0, 0x0, 0x5)