r0 = creat(&(0x7f00000003c0)='./file0\x00', 0x0) r1 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000000)='net/ip_tables_matches\x00') lseek(0xffffffffffffffff, 0x0, 0x0) sendfile(r0, r1, 0x0, 0x4)