// https://syzkaller.appspot.com/bug?id=2d2bbce43f98c7bcd3dc505bc9094baa8289c8b8 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #ifndef __NR_ioctl #define __NR_ioctl 29 #endif #ifndef __NR_mmap #define __NR_mmap 222 #endif #ifndef __NR_sendmsg #define __NR_sendmsg 211 #endif #ifndef __NR_socket #define __NR_socket 198 #endif #define BITMASK(bf_off, bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type, htobe, addr, val, bf_off, bf_len) \ *(type*)(addr) = \ htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | \ (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) uint64_t r[3] = {0xffffffffffffffff, 0x0, 0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); const char* reason; (void)reason; intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } // socket$inet arguments: [ // domain: const = 0x10 (8 bytes) // type: socket_type = 0x3 (8 bytes) // proto: int32 = 0x0 (4 bytes) // ] // returns sock_in res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=SOCK_RAW*/ 3ul, /*proto=*/0); if (res != -1) r[0] = res; // ioctl$sock_SIOCGIFINDEX arguments: [ // fd: sock (resource) // cmd: const = 0x8933 (4 bytes) // arg: ptr[out, ifreq_dev_t[devnames, ifindex]] { // ifreq_dev_t[devnames, ifindex] { // ifr_ifrn: buffer: {62 6f 6e 64 30 00 00 00 00 00 00 00 00 00 00 00} // (length 0x10) elem: ifindex (resource) pad = 0x0 (20 bytes) // } // } // ] memcpy((void*)0x20000300, "bond0\000\000\000\000\000\000\000\000\000\000\000", 16); res = syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x8933, /*arg=*/0x20000300ul); if (res != -1) r[1] = *(uint32_t*)0x20000310; // socket$netlink arguments: [ // domain: const = 0x10 (8 bytes) // type: const = 0x3 (8 bytes) // proto: netlink_proto = 0x0 (4 bytes) // ] // returns sock_netlink res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0); if (res != -1) r[2] = res; // sendmsg$nl_route_sched arguments: [ // fd: sock_nl_route (resource) // msg: ptr[in, msghdr_netlink[netlink_msg_route_sched]] { // msghdr_netlink[netlink_msg_route_sched] { // addr: nil // addrlen: len = 0x0 (4 bytes) // pad = 0x0 (4 bytes) // vec: ptr[in, iovec[in, netlink_msg_route_sched]] { // iovec[in, netlink_msg_route_sched] { // addr: ptr[in, netlink_msg_route_sched] { // union netlink_msg_route_sched { // newqdisc: netlink_msg_t[const[RTM_NEWQDISC, int16], // tcmsg[AF_UNSPEC], rtm_tca_policy] { // len: len = 0x9c (4 bytes) // type: const = 0x24 (2 bytes) // flags: netlink_msg_flags = 0xf0b (2 bytes) // seq: int32 = 0x70bd2b (4 bytes) // pid: int32 = 0x0 (4 bytes) // payload: tcmsg[AF_UNSPEC] { // family: const = 0x0 (1 bytes) // tcm__pad1: const = 0x0 (1 bytes) // tcm__pad2: const = 0x12 (2 bytes) // ifindex: ifindex (resource) // tcm_handle: tcm_handle { // minor: tcm_handle_offsets = 0x0 (2 bytes) // major: tcm_handle_offsets = 0x0 (2 bytes) // } // tcm_parent: tcm_handle { // minor: tcm_handle_offsets = 0xffff (2 bytes) // major: tcm_handle_offsets = 0xffff (2 bytes) // } // tcm_info: tcm_handle { // minor: tcm_handle_offsets = 0x2 (2 bytes) // major: tcm_handle_offsets = 0x9 (2 bytes) // } // } // attrs: array[rtm_tca_policy] { // union rtm_tca_policy { // qdisc_kind_options: union qdisc_kind_options { // q_taprio: tca_kind_options_t["taprio", // array[taprio_policy]] { // TCA_KIND: nlattr_t[const[TCA_KIND, int16], // string["taprio"]] { // nla_len: offsetof = 0xb (2 bytes) // nla_type: const = 0x1 (2 bytes) // payload: buffer: {74 61 70 72 69 6f 00} (length // 0x7) size: buffer: {} (length 0x0) pad = 0x0 (1 // bytes) // } // TCA_OPTIONS: nlattr_t[const[TCA_OPTIONS, int16], // array[taprio_policy]] { // nla_len: offsetof = 0x6c (2 bytes) // nla_type: const = 0x2 (2 bytes) // payload: array[taprio_policy] { // union taprio_policy { // TCA_TAPRIO_ATTR_PRIOMAP: // nlattr_t[const[TCA_TAPRIO_ATTR_PRIOMAP, // int16], tc_mqprio_qopt] { // nla_len: offsetof = 0x56 (2 bytes) // nla_type: const = 0x1 (2 bytes) // payload: tc_mqprio_qopt { // num_tc: int8 = 0x2 (1 bytes) // prio_tc_map: array[int8] { // int8 = 0x0 (1 bytes) // int8 = 0x0 (1 bytes) // int8 = 0x0 (1 bytes) // int8 = 0x0 (1 bytes) // int8 = 0x0 (1 bytes) // int8 = 0x0 (1 bytes) // int8 = 0x0 (1 bytes) // int8 = 0x0 (1 bytes) // int8 = 0x0 (1 bytes) // int8 = 0x0 (1 bytes) // int8 = 0x1 (1 bytes) // int8 = 0x0 (1 bytes) // int8 = 0x0 (1 bytes) // int8 = 0x0 (1 bytes) // int8 = 0x0 (1 bytes) // int8 = 0x0 (1 bytes) // } // hw: int8 = 0x0 (1 bytes) // count: array[int16] { // int16 = 0x5 (2 bytes) // int16 = 0x4 (2 bytes) // int16 = 0x2 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x1 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x9 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x3 (2 bytes) // } // offset: array[int16] { // int16 = 0x0 (2 bytes) // int16 = 0x8 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x1 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x3 (2 bytes) // int16 = 0x0 (2 bytes) // int16 = 0x8001 (2 bytes) // } // } // size: buffer: {} (length 0x0) // pad = 0x0 (2 bytes) // } // } // union taprio_policy { // TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST: // nlattr_tt[const[TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST, // int16:14], 0, 1, // array[nlnest[TCA_TAPRIO_SCHED_ENTRY, // array[entry_policy$taprio]]]] { // nla_len: offsetof = 0x8 (2 bytes) // nla_type: const = 0x2 (1 bytes) // NLA_F_NET_BYTEORDER: const = 0x0 (0 bytes) // NLA_F_NESTED: const = 0x1 (1 bytes) // payload: // array[nlattr_tt[const[TCA_TAPRIO_SCHED_ENTRY, // int16:14], 0, 1, // array[entry_policy$taprio]]] { // nlattr_tt[const[TCA_TAPRIO_SCHED_ENTRY, // int16:14], 0, 1, // array[entry_policy$taprio]] { // nla_len: offsetof = 0x4 (2 bytes) // nla_type: const = 0x1 (1 bytes) // NLA_F_NET_BYTEORDER: const = 0x0 (0 // bytes) NLA_F_NESTED: const = 0x1 (1 // bytes) payload: // array[entry_policy$taprio] { // } // size: buffer: {} (length 0x0) // } // } // size: buffer: {} (length 0x0) // } // } // union taprio_policy { // TCA_TAPRIO_ATTR_SCHED_CLOCKID: // nlattr_t[const[TCA_TAPRIO_ATTR_SCHED_CLOCKID, // int16], int32] { // nla_len: offsetof = 0x8 (2 bytes) // nla_type: const = 0x5 (2 bytes) // payload: int32 = 0x7 (4 bytes) // size: buffer: {} (length 0x0) // } // } // } // size: buffer: {} (length 0x0) // } // } // } // } // } // } // } // } // len: len = 0x9c (8 bytes) // } // } // vlen: const = 0x1 (8 bytes) // ctrl: const = 0x0 (8 bytes) // ctrllen: const = 0x0 (8 bytes) // f: send_flags = 0x0 (4 bytes) // pad = 0x0 (4 bytes) // } // } // f: send_flags = 0x0 (8 bytes) // ] *(uint64_t*)0x200007c0 = 0; *(uint32_t*)0x200007c8 = 0; *(uint64_t*)0x200007d0 = 0x20000780; *(uint64_t*)0x20000780 = 0x20000840; *(uint32_t*)0x20000840 = 0x9c; *(uint16_t*)0x20000844 = 0x24; *(uint16_t*)0x20000846 = 0xf0b; *(uint32_t*)0x20000848 = 0x70bd2b; *(uint32_t*)0x2000084c = 0; *(uint8_t*)0x20000850 = 0; *(uint8_t*)0x20000851 = 0; *(uint16_t*)0x20000852 = 0x12; *(uint32_t*)0x20000854 = r[1]; *(uint16_t*)0x20000858 = 0; *(uint16_t*)0x2000085a = 0; *(uint16_t*)0x2000085c = -1; *(uint16_t*)0x2000085e = -1; *(uint16_t*)0x20000860 = 2; *(uint16_t*)0x20000862 = 9; *(uint16_t*)0x20000864 = 0xb; *(uint16_t*)0x20000866 = 1; memcpy((void*)0x20000868, "taprio\000", 7); *(uint16_t*)0x20000870 = 0x6c; *(uint16_t*)0x20000872 = 2; *(uint16_t*)0x20000874 = 0x56; *(uint16_t*)0x20000876 = 1; *(uint8_t*)0x20000878 = 2; *(uint8_t*)0x20000879 = 0; *(uint8_t*)0x2000087a = 0; *(uint8_t*)0x2000087b = 0; *(uint8_t*)0x2000087c = 0; *(uint8_t*)0x2000087d = 0; *(uint8_t*)0x2000087e = 0; *(uint8_t*)0x2000087f = 0; *(uint8_t*)0x20000880 = 0; *(uint8_t*)0x20000881 = 0; *(uint8_t*)0x20000882 = 0; *(uint8_t*)0x20000883 = 1; *(uint8_t*)0x20000884 = 0; *(uint8_t*)0x20000885 = 0; *(uint8_t*)0x20000886 = 0; *(uint8_t*)0x20000887 = 0; *(uint8_t*)0x20000888 = 0; *(uint8_t*)0x20000889 = 0; *(uint16_t*)0x2000088a = 5; *(uint16_t*)0x2000088c = 4; *(uint16_t*)0x2000088e = 2; *(uint16_t*)0x20000890 = 0; *(uint16_t*)0x20000892 = 1; *(uint16_t*)0x20000894 = 0; *(uint16_t*)0x20000896 = 9; *(uint16_t*)0x20000898 = 0; *(uint16_t*)0x2000089a = 0; *(uint16_t*)0x2000089c = 0; *(uint16_t*)0x2000089e = 0; *(uint16_t*)0x200008a0 = 0; *(uint16_t*)0x200008a2 = 0; *(uint16_t*)0x200008a4 = 0; *(uint16_t*)0x200008a6 = 0; *(uint16_t*)0x200008a8 = 3; *(uint16_t*)0x200008aa = 0; *(uint16_t*)0x200008ac = 8; *(uint16_t*)0x200008ae = 0; *(uint16_t*)0x200008b0 = 0; *(uint16_t*)0x200008b2 = 0; *(uint16_t*)0x200008b4 = 0; *(uint16_t*)0x200008b6 = 0; *(uint16_t*)0x200008b8 = 0; *(uint16_t*)0x200008ba = 1; *(uint16_t*)0x200008bc = 0; *(uint16_t*)0x200008be = 0; *(uint16_t*)0x200008c0 = 0; *(uint16_t*)0x200008c2 = 0; *(uint16_t*)0x200008c4 = 3; *(uint16_t*)0x200008c6 = 0; *(uint16_t*)0x200008c8 = 0x8001; *(uint16_t*)0x200008cc = 8; STORE_BY_BITMASK(uint16_t, , 0x200008ce, 2, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x200008cf, 0, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x200008cf, 1, 7, 1); *(uint16_t*)0x200008d0 = 4; STORE_BY_BITMASK(uint16_t, , 0x200008d2, 1, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x200008d3, 0, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x200008d3, 1, 7, 1); *(uint16_t*)0x200008d4 = 8; *(uint16_t*)0x200008d6 = 5; *(uint32_t*)0x200008d8 = 7; *(uint64_t*)0x20000788 = 0x9c; *(uint64_t*)0x200007d8 = 1; *(uint64_t*)0x200007e0 = 0; *(uint64_t*)0x200007e8 = 0; *(uint32_t*)0x200007f0 = 0; syscall(__NR_sendmsg, /*fd=*/r[2], /*msg=*/0x200007c0ul, /*f=*/0ul); return 0; }