// https://syzkaller.appspot.com/bug?id=08acfb3ecee71b9442e8275dde26607f2ad7c6a1 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*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=*/0x200001000000ul, /*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$pppl2tp arguments: [ // domain: const = 0x18 (8 bytes) // type: const = 0x1 (8 bytes) // proto: const = 0x1 (4 bytes) // ] // returns sock_pppl2tp res = syscall(__NR_socket, /*domain=*/0x18ul, /*type=*/1ul, /*proto=*/1); if (res != -1) r[0] = res; // socket$inet6_udp arguments: [ // domain: const = 0xa (8 bytes) // type: const = 0x2 (8 bytes) // proto: const = 0x0 (4 bytes) // ] // returns sock_udp6 res = syscall(__NR_socket, /*domain=*/0xaul, /*type=*/2ul, /*proto=*/0); if (res != -1) r[1] = res; // connect$pppl2tp arguments: [ // fd: sock_pppl2tp (resource) // addr: ptr[in, sockaddr_pppl2tp] { // union sockaddr_pppl2tp { // pppol2tpv3: sockaddr_pppl2tp_t[pppol2tpv3_addr] { // sa_family: const = 0x18 (2 bytes) // sa_protocol: const = 0x1 (4 bytes) // addr: pppol2tp_addr_t[int32] { // pid: const = 0x3 (4 bytes) // fd: sock (resource) // addr: sockaddr_in { // family: const = 0x2 (2 bytes) // port: int16be = 0x4e23 (2 bytes) // addr: union ipv4_addr { // broadcast: const = 0xffffffff (4 bytes) // } // pad = 0x0 (8 bytes) // } // s_tunnel: int32 = 0x2 (4 bytes) // s_session: int32 = 0x0 (4 bytes) // d_tunnel: int32 = 0x4 (4 bytes) // d_session: int32 = 0x0 (4 bytes) // } // } // } // } // addrlen: len = 0x2e (8 bytes) // ] *(uint16_t*)0x200000000740 = 0x18; *(uint32_t*)0x200000000742 = 1; *(uint32_t*)0x200000000746 = 3; *(uint32_t*)0x20000000074a = r[1]; *(uint16_t*)0x20000000074e = 2; *(uint16_t*)0x200000000750 = htobe16(0x4e23); *(uint32_t*)0x200000000752 = htobe32(-1); *(uint32_t*)0x20000000075e = 2; *(uint32_t*)0x200000000762 = 0; *(uint32_t*)0x200000000766 = 4; *(uint32_t*)0x20000000076a = 0; syscall(__NR_connect, /*fd=*/r[0], /*addr=*/0x200000000740ul, /*addrlen=*/0x2eul); // ioctl$PPPIOCGFLAGS arguments: [ // fd: sock_pppox (resource) // cmd: const = 0x8004745a (4 bytes) // arg: nil // ] syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x8004745a, /*arg=*/0ul); return 0; }