// https://syzkaller.appspot.com/bug?id=6a597ae542930a0c05e5d5d717cf6fcf3d66fd54 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #ifndef __NR_close #define __NR_close 57 #endif #ifndef __NR_ioctl #define __NR_ioctl 29 #endif #ifndef __NR_mmap #define __NR_mmap 222 #endif #ifndef __NR_openat #define __NR_openat 56 #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[8] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0}; 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)) { } // openat$tun arguments: [ // fd: const = 0xffffffffffffff9c (8 bytes) // file: ptr[in, buffer] { // buffer: {2f 64 65 76 2f 6e 65 74 2f 74 75 6e 00} (length 0xd) // } // flags: open_flags = 0x0 (4 bytes) // mode: const = 0x0 (2 bytes) // ] // returns fd_tun memcpy((void*)0x20000240, "/dev/net/tun\000", 13); res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x20000240ul, /*flags=*/0, /*mode=*/0); if (res != -1) r[0] = res; // ioctl$TUNSETIFF arguments: [ // fd: fd_tun (resource) // cmd: const = 0x400454ca (4 bytes) // arg: ptr[in, ifreq_dev_t[devnames, flags[tun_setiff_flags, int16]]] { // ifreq_dev_t[devnames, flags[tun_setiff_flags, int16]] { // ifr_ifrn: buffer: {73 79 7a 6b 61 6c 6c 65 72 30 00 00 00 00 00 00} // (length 0x10) elem: tun_setiff_flags = 0x7101 (2 bytes) pad = 0x0 // (22 bytes) // } // } // ] memcpy((void*)0x20000040, "syzkaller0\000\000\000\000\000\000", 16); *(uint16_t*)0x20000050 = 0x7101; syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x400454ca, /*arg=*/0x20000040ul); // socket$unix arguments: [ // domain: const = 0x1 (8 bytes) // type: unix_socket_type = 0x1 (8 bytes) // proto: const = 0x0 (4 bytes) // ] // returns sock_unix res = syscall(__NR_socket, /*domain=*/1ul, /*type=SOCK_STREAM*/ 1ul, /*proto=*/0); if (res != -1) r[1] = res; // socket$kcm arguments: [ // domain: const = 0x11 (8 bytes) // type: kcm_socket_type = 0x3 (8 bytes) // proto: const = 0x0 (4 bytes) // ] // returns sock_kcm res = syscall(__NR_socket, /*domain=*/0x11ul, /*type=SOCK_DGRAM|0x1*/ 3ul, /*proto=*/0); if (res != -1) r[2] = res; // socket arguments: [ // domain: socket_domain = 0x400000000010 (8 bytes) // type: socket_type = 0x3 (8 bytes) // proto: int32 = 0x0 (4 bytes) // ] // returns sock res = syscall(__NR_socket, /*domain=AF_NETLINK|0x400000000000*/ 0x400000000010ul, /*type=SOCK_RAW*/ 3ul, /*proto=*/0); if (res != -1) r[3] = res; // socket$unix arguments: [ // domain: const = 0x1 (8 bytes) // type: unix_socket_type = 0x1 (8 bytes) // proto: const = 0x0 (4 bytes) // ] // returns sock_unix res = syscall(__NR_socket, /*domain=*/1ul, /*type=SOCK_STREAM*/ 1ul, /*proto=*/0); if (res != -1) r[4] = res; // ioctl$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: {73 79 7a 6b 61 6c 6c 65 72 30 00 00 00 00 00 00} // (length 0x10) elem: ifindex (resource) pad = 0x0 (20 bytes) // } // } // ] memcpy((void*)0x20000100, "syzkaller0\000\000\000\000\000\000", 16); res = syscall(__NR_ioctl, /*fd=*/r[4], /*cmd=*/0x8933, /*arg=*/0x20000100ul); if (res != -1) r[5] = *(uint32_t*)0x20000110; // 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 = 0x48 (4 bytes) // type: const = 0x24 (2 bytes) // flags: netlink_msg_flags = 0x4ee4e6a52ff56541 (2 bytes) // seq: int32 = 0x70bd2a (4 bytes) // pid: int32 = 0xfffffffd (4 bytes) // payload: tcmsg[AF_UNSPEC] { // family: const = 0x0 (1 bytes) // tcm__pad1: const = 0x0 (1 bytes) // tcm__pad2: const = 0x0 (2 bytes) // ifindex: ifindex (resource) // tcm_handle: tcm_handle { // minor: tcm_handle_offsets = 0x0 (2 bytes) // major: tcm_handle_offsets = 0x1 (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 = 0xffe0 (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_htb: tca_kind_options_t["htb", array[htb_policy]] // { // TCA_KIND: nlattr_t[const[TCA_KIND, int16], // string["htb"]] { // nla_len: offsetof = 0x8 (2 bytes) // nla_type: const = 0x1 (2 bytes) // payload: buffer: {68 74 62 00} (length 0x4) // size: buffer: {} (length 0x0) // } // TCA_OPTIONS: nlattr_t[const[TCA_OPTIONS, int16], // array[htb_policy]] { // nla_len: offsetof = 0x1c (2 bytes) // nla_type: const = 0x2 (2 bytes) // payload: array[htb_policy] { // union htb_policy { // TCA_HTB_INIT: nlattr_t[const[TCA_HTB_INIT, // int16], tc_htb_glob] { // nla_len: offsetof = 0x18 (2 bytes) // nla_type: const = 0x2 (2 bytes) // payload: tc_htb_glob { // version: const = 0x3 (4 bytes) // rate2quantum: int32 = 0xb (4 bytes) // defcls: int32 = 0xfffffffc (4 bytes) // debug: const = 0x0 (4 bytes) // direct_pkts: const = 0x0 (4 bytes) // } // size: buffer: {} (length 0x0) // } // } // } // size: buffer: {} (length 0x0) // } // } // } // } // } // } // } // } // len: len = 0x48 (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*)0x200012c0 = 0; *(uint32_t*)0x200012c8 = 0; *(uint64_t*)0x200012d0 = 0x20000000; *(uint64_t*)0x20000000 = 0x20000500; *(uint32_t*)0x20000500 = 0x48; *(uint16_t*)0x20000504 = 0x24; *(uint16_t*)0x20000506 = 0x6541; *(uint32_t*)0x20000508 = 0x70bd2a; *(uint32_t*)0x2000050c = 0xfffffffd; *(uint8_t*)0x20000510 = 0; *(uint8_t*)0x20000511 = 0; *(uint16_t*)0x20000512 = 0; *(uint32_t*)0x20000514 = r[5]; *(uint16_t*)0x20000518 = 0; *(uint16_t*)0x2000051a = 1; *(uint16_t*)0x2000051c = -1; *(uint16_t*)0x2000051e = -1; *(uint16_t*)0x20000520 = 0xffe0; *(uint16_t*)0x20000522 = 9; *(uint16_t*)0x20000524 = 8; *(uint16_t*)0x20000526 = 1; memcpy((void*)0x20000528, "htb\000", 4); *(uint16_t*)0x2000052c = 0x1c; *(uint16_t*)0x2000052e = 2; *(uint16_t*)0x20000530 = 0x18; *(uint16_t*)0x20000532 = 2; *(uint32_t*)0x20000534 = 3; *(uint32_t*)0x20000538 = 0xb; *(uint32_t*)0x2000053c = 0xfffffffc; *(uint32_t*)0x20000540 = 0; *(uint32_t*)0x20000544 = 0; *(uint64_t*)0x20000008 = 0x48; *(uint64_t*)0x200012d8 = 1; *(uint64_t*)0x200012e0 = 0; *(uint64_t*)0x200012e8 = 0; *(uint32_t*)0x200012f0 = 0; syscall(__NR_sendmsg, /*fd=*/r[3], /*msg=*/0x200012c0ul, /*f=*/0ul); // 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 { // newtfilter: netlink_msg_t[const[RTM_NEWTFILTER, int16], // tcmsg[AF_UNSPEC], filter_policy] { // len: len = 0x5c (4 bytes) // type: const = 0x2c (2 bytes) // flags: netlink_msg_flags = 0xf3f (2 bytes) // seq: int32 = 0x30bd29 (4 bytes) // pid: int32 = 0x25dfdbfd (4 bytes) // payload: tcmsg[AF_UNSPEC] { // family: const = 0x0 (1 bytes) // tcm__pad1: const = 0x0 (1 bytes) // tcm__pad2: const = 0x0 (2 bytes) // ifindex: ifindex (resource) // tcm_handle: tcm_handle { // minor: tcm_handle_offsets = 0xb (2 bytes) // major: tcm_handle_offsets = 0x2 (2 bytes) // } // tcm_parent: tcm_handle { // minor: tcm_handle_offsets = 0x0 (2 bytes) // major: tcm_handle_offsets = 0x0 (2 bytes) // } // tcm_info: tcm_handle { // minor: tcm_handle_offsets = 0x7 (2 bytes) // major: tcm_handle_offsets = 0xfff1 (2 bytes) // } // } // attrs: array[filter_policy] { // union filter_policy { // filter_kind_options: union filter_kind_options { // f_basic: tca_kind_options_t["basic", // array[basic_policy]] { // TCA_KIND: nlattr_t[const[TCA_KIND, int16], // string["basic"]] { // nla_len: offsetof = 0xa (2 bytes) // nla_type: const = 0x1 (2 bytes) // payload: buffer: {62 61 73 69 63 00} (length // 0x6) size: buffer: {} (length 0x0) pad = 0x0 (2 // bytes) // } // TCA_OPTIONS: nlattr_t[const[TCA_OPTIONS, int16], // array[basic_policy]] { // nla_len: offsetof = 0x2c (2 bytes) // nla_type: const = 0x2 (2 bytes) // payload: array[basic_policy] { // union basic_policy { // TCA_BASIC_EMATCHES: // nlattr_tt[const[TCA_BASIC_EMATCHES, // int16:14], 0, 1, array[em_policy]] { // nla_len: offsetof = 0x28 (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[em_policy] { // union em_policy { // TCA_EMATCH_TREE_HDR: // nlattr_t[const[TCA_EMATCH_TREE_HDR, // int16], tcf_ematch_tree_hdr] { // nla_len: offsetof = 0x8 (2 bytes) // nla_type: const = 0x1 (2 bytes) // payload: tcf_ematch_tree_hdr { // nmatches: int16 = 0x1 (2 bytes) // progid: const = 0x0 (2 bytes) // } // size: buffer: {} (length 0x0) // } // } // union em_policy { // TCA_EMATCH_TREE_LIST: // nlattr_tt[const[TCA_EMATCH_TREE_LIST, // int16:14], 0, 1, // array[tca_ematch_tree_list]] { // nla_len: offsetof = 0x1c (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[tca_ematch_tree_list] { // union tca_ematch_tree_list { // TCF_EM_CMP: // nlattr_tt[int16:14[1:3], 0, 0, // tcf_ematch_hdr_t[TCF_EM_CMP, // tcf_em_cmp]] { // nla_len: offsetof = 0x18 (2 // bytes) nla_type: int16 = 0x1 // (1 bytes) NLA_F_NET_BYTEORDER: // const = 0x0 (0 bytes) // NLA_F_NESTED: const = 0x0 (1 // bytes) payload: // tcf_ematch_hdr_t[TCF_EM_CMP, // tcf_em_cmp] { // header: // tcf_ematch_hdr[TCF_EM_CMP] { // matchid: int16 = 0x3 (2 // bytes) kind: const = 0x1 // (2 bytes) flags: int16 = // 0x5 (2 bytes) pad: const = // 0x0 (2 bytes) // } // payload: tcf_em_cmp { // val: int32 = 0x3 (4 bytes) // mask: int32 = 0x7f (4 // bytes) off: int16 = 0x800 // (2 bytes) align: // tcf_em_aligns = 0x7 (0 // bytes) flags: int8 = 0x4 // (1 bytes) layer: // tcf_layers = 0x2 (0 bytes) // opnd: tcf_em_opnds = 0x1 // (1 bytes) // } // } // size: buffer: {} (length 0x0) // } // } // } // size: buffer: {} (length 0x0) // } // } // } // size: buffer: {} (length 0x0) // } // } // } // size: buffer: {} (length 0x0) // } // } // } // } // } // } // } // } // len: len = 0x5c (8 bytes) // } // } // vlen: const = 0x1 (8 bytes) // ctrl: const = 0x0 (8 bytes) // ctrllen: const = 0x0 (8 bytes) // f: send_flags = 0x20041090 (4 bytes) // pad = 0x0 (4 bytes) // } // } // f: send_flags = 0x8000 (8 bytes) // ] *(uint64_t*)0x200001c0 = 0; *(uint32_t*)0x200001c8 = 0; *(uint64_t*)0x200001d0 = 0x20000300; *(uint64_t*)0x20000300 = 0x20000580; *(uint32_t*)0x20000580 = 0x5c; *(uint16_t*)0x20000584 = 0x2c; *(uint16_t*)0x20000586 = 0xf3f; *(uint32_t*)0x20000588 = 0x30bd29; *(uint32_t*)0x2000058c = 0x25dfdbfd; *(uint8_t*)0x20000590 = 0; *(uint8_t*)0x20000591 = 0; *(uint16_t*)0x20000592 = 0; *(uint32_t*)0x20000594 = r[5]; *(uint16_t*)0x20000598 = 0xb; *(uint16_t*)0x2000059a = 2; *(uint16_t*)0x2000059c = 0; *(uint16_t*)0x2000059e = 0; *(uint16_t*)0x200005a0 = 7; *(uint16_t*)0x200005a2 = 0xfff1; *(uint16_t*)0x200005a4 = 0xa; *(uint16_t*)0x200005a6 = 1; memcpy((void*)0x200005a8, "basic\000", 6); *(uint16_t*)0x200005b0 = 0x2c; *(uint16_t*)0x200005b2 = 2; *(uint16_t*)0x200005b4 = 0x28; STORE_BY_BITMASK(uint16_t, , 0x200005b6, 2, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x200005b7, 0, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x200005b7, 1, 7, 1); *(uint16_t*)0x200005b8 = 8; *(uint16_t*)0x200005ba = 1; *(uint16_t*)0x200005bc = 1; *(uint16_t*)0x200005be = 0; *(uint16_t*)0x200005c0 = 0x1c; STORE_BY_BITMASK(uint16_t, , 0x200005c2, 2, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x200005c3, 0, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x200005c3, 1, 7, 1); *(uint16_t*)0x200005c4 = 0x18; STORE_BY_BITMASK(uint16_t, , 0x200005c6, 1, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x200005c7, 0, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x200005c7, 0, 7, 1); *(uint16_t*)0x200005c8 = 3; *(uint16_t*)0x200005ca = 1; *(uint16_t*)0x200005cc = 5; *(uint16_t*)0x200005ce = 0; *(uint32_t*)0x200005d0 = 3; *(uint32_t*)0x200005d4 = 0x7f; *(uint16_t*)0x200005d8 = 0x800; STORE_BY_BITMASK(uint8_t, , 0x200005da, 7, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x200005da, 4, 4, 4); STORE_BY_BITMASK(uint8_t, , 0x200005db, 2, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x200005db, 1, 4, 4); *(uint64_t*)0x20000308 = 0x5c; *(uint64_t*)0x200001d8 = 1; *(uint64_t*)0x200001e0 = 0; *(uint64_t*)0x200001e8 = 0; *(uint32_t*)0x200001f0 = 0x20041090; syscall(__NR_sendmsg, /*fd=*/r[3], /*msg=*/0x200001c0ul, /*f=MSG_MORE*/ 0x8000ul); // openat$tun arguments: [ // fd: const = 0xffffffffffffff9c (8 bytes) // file: ptr[in, buffer] { // buffer: {2f 64 65 76 2f 6e 65 74 2f 74 75 6e 00} (length 0xd) // } // flags: open_flags = 0x0 (4 bytes) // mode: const = 0x0 (2 bytes) // ] // returns fd_tun memcpy((void*)0x20000400, "/dev/net/tun\000", 13); res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x20000400ul, /*flags=*/0, /*mode=*/0); if (res != -1) r[6] = res; // close arguments: [ // fd: fd (resource) // ] syscall(__NR_close, /*fd=*/r[6]); // socket$nl_generic arguments: [ // domain: const = 0x10 (8 bytes) // type: const = 0x3 (8 bytes) // proto: const = 0x10 (4 bytes) // ] // returns sock_nl_generic syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0x10); // ioctl$SIOCSIFHWADDR arguments: [ // fd: fd_tun (resource) // cmd: const = 0x8914 (4 bytes) // arg: ptr[in, ifreq_dev_t[devnames, mac_addr]] { // ifreq_dev_t[devnames, mac_addr] { // ifr_ifrn: buffer: {73 79 7a 6b 61 6c 6c 65 72 30 00 00 00 00 00 00} // (length 0x10) elem: union mac_addr { // multicast: buffer: {bb bb bb bb bb bb} (length 0x6) // } // pad = 0x0 (18 bytes) // } // } // ] memcpy((void*)0x20002280, "syzkaller0\000\000\000\000\000\000", 16); memset((void*)0x20002290, 187, 6); syscall(__NR_ioctl, /*fd=*/r[6], /*cmd=*/0x8914, /*arg=*/0x20002280ul); // ioctl$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: {73 79 7a 6b 61 6c 6c 65 72 30 00 00 00 00 00 00} // (length 0x10) elem: ifindex (resource) pad = 0x0 (20 bytes) // } // } // ] memcpy((void*)0x20000100, "syzkaller0\000\000\000\000\000\000", 16); res = syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0x8933, /*arg=*/0x20000100ul); if (res != -1) r[7] = *(uint32_t*)0x20000110; // sendmsg$kcm arguments: [ // fd: sock_kcm (resource) // msg: ptr[in, send_msghdr] { // send_msghdr { // msg_name: ptr[in, sockaddr_storage] { // union sockaddr_storage { // xdp: sockaddr_xdp { // sxdp_family: const = 0x2c (2 bytes) // sxdp_flags: sxdp_flags = 0x7 (2 bytes) // sxdp_ifindex: ifindex (resource) // sxdp_queue_id: int32 = 0x3e (4 bytes) // sxdp_shared_umem_fd: const = 0x0 (4 bytes) // } // } // } // msg_namelen: len = 0x80 (4 bytes) // pad = 0x0 (4 bytes) // msg_iov: ptr[in, array[iovec[in, array[int8]]]] { // array[iovec[in, array[int8]]] { // iovec[in, array[int8]] { // addr: ptr[in, buffer] { // buffer: {72} (length 0x1) // } // len: len = 0x1 (8 bytes) // } // } // } // msg_iovlen: len = 0x1 (8 bytes) // msg_control: nil // msg_controllen: bytesize = 0x0 (8 bytes) // msg_flags: const = 0x0 (4 bytes) // pad = 0x0 (4 bytes) // } // } // f: send_flags = 0x4 (8 bytes) // ] *(uint64_t*)0x200000c0 = 0x20000380; *(uint16_t*)0x20000380 = 0x2c; *(uint16_t*)0x20000382 = 7; *(uint32_t*)0x20000384 = r[7]; *(uint32_t*)0x20000388 = 0x3e; *(uint32_t*)0x2000038c = 0; *(uint32_t*)0x200000c8 = 0x80; *(uint64_t*)0x200000d0 = 0x20000780; *(uint64_t*)0x20000780 = 0x20000140; memset((void*)0x20000140, 114, 1); *(uint64_t*)0x20000788 = 1; *(uint64_t*)0x200000d8 = 1; *(uint64_t*)0x200000e0 = 0; *(uint64_t*)0x200000e8 = 0; *(uint32_t*)0x200000f0 = 0; syscall(__NR_sendmsg, /*fd=*/r[2], /*msg=*/0x200000c0ul, /*f=MSG_DONTROUTE*/ 4ul); return 0; }