// https://syzkaller.appspot.com/bug?id=6e96f5bd56bfecdaa0bfeaf2695a25cc80bfbd9a // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } #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[2] = {0xffffffffffffffff, 0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x32ul, -1, 0); use_temporary_dir(); intptr_t res = 0; res = syscall(__NR_socket, 0x10ul, 3ul, 0xcul); if (res != -1) r[0] = res; *(uint64_t*)0x20000300 = 0; *(uint32_t*)0x20000308 = 0; *(uint64_t*)0x20000310 = 0x20000000; *(uint64_t*)0x20000000 = 0x20000040; *(uint32_t*)0x20000040 = 0x54; *(uint8_t*)0x20000044 = 2; *(uint8_t*)0x20000045 = 6; *(uint16_t*)0x20000046 = 1; *(uint32_t*)0x20000048 = 0; *(uint32_t*)0x2000004c = 0; *(uint8_t*)0x20000050 = 7; *(uint8_t*)0x20000051 = 0; *(uint16_t*)0x20000052 = htobe16(0); *(uint16_t*)0x20000054 = 0xd; *(uint16_t*)0x20000056 = 3; memcpy((void*)0x20000058, "hash:net\000", 9); *(uint16_t*)0x20000064 = 9; *(uint16_t*)0x20000066 = 2; memcpy((void*)0x20000068, "syz2\000", 5); *(uint16_t*)0x20000070 = 0xc; STORE_BY_BITMASK(uint16_t, , 0x20000072, 7, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x20000073, 0, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x20000073, 1, 7, 1); *(uint16_t*)0x20000074 = 8; STORE_BY_BITMASK(uint16_t, , 0x20000076, 8, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x20000077, 1, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x20000077, 0, 7, 1); *(uint32_t*)0x20000078 = htobe32(0x3b); *(uint16_t*)0x2000007c = 5; *(uint16_t*)0x2000007e = 1; *(uint8_t*)0x20000080 = 7; *(uint16_t*)0x20000084 = 5; *(uint16_t*)0x20000086 = 4; *(uint8_t*)0x20000088 = 0; *(uint16_t*)0x2000008c = 5; *(uint16_t*)0x2000008e = 5; *(uint8_t*)0x20000090 = 2; *(uint64_t*)0x20000008 = 0x54; *(uint64_t*)0x20000318 = 1; *(uint64_t*)0x20000320 = 0; *(uint64_t*)0x20000328 = 0; *(uint32_t*)0x20000330 = 0x20000040; syscall(__NR_sendmsg, r[0], 0x20000300ul, 0ul); res = syscall(__NR_socket, 0x10ul, 3ul, 0xcul); if (res != -1) r[1] = res; *(uint64_t*)0x20000d00 = 0; *(uint32_t*)0x20000d08 = 0; *(uint64_t*)0x20000d10 = 0x20000cc0; *(uint64_t*)0x20000cc0 = 0x20000080; *(uint32_t*)0x20000080 = 0x44; *(uint8_t*)0x20000084 = 9; *(uint8_t*)0x20000085 = 6; *(uint16_t*)0x20000086 = 0x801; *(uint32_t*)0x20000088 = 0; *(uint32_t*)0x2000008c = 0; *(uint8_t*)0x20000090 = 0; *(uint8_t*)0x20000091 = 0; *(uint16_t*)0x20000092 = htobe16(0); *(uint16_t*)0x20000094 = 5; *(uint16_t*)0x20000096 = 1; *(uint8_t*)0x20000098 = 7; *(uint16_t*)0x2000009c = 0x1c; STORE_BY_BITMASK(uint16_t, , 0x2000009e, 7, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x2000009f, 0, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x2000009f, 1, 7, 1); *(uint16_t*)0x200000a0 = 0xc; STORE_BY_BITMASK(uint16_t, , 0x200000a2, 2, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x200000a3, 0, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x200000a3, 1, 7, 1); *(uint16_t*)0x200000a4 = 8; STORE_BY_BITMASK(uint16_t, , 0x200000a6, 1, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x200000a7, 1, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x200000a7, 0, 7, 1); *(uint32_t*)0x200000a8 = htobe32(0xc6); *(uint16_t*)0x200000ac = 0xc; STORE_BY_BITMASK(uint16_t, , 0x200000ae, 1, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x200000af, 0, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x200000af, 1, 7, 1); *(uint16_t*)0x200000b0 = 8; STORE_BY_BITMASK(uint16_t, , 0x200000b2, 1, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x200000b3, 1, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x200000b3, 0, 7, 1); *(uint32_t*)0x200000b4 = htobe32(0xe0000001); *(uint16_t*)0x200000b8 = 9; *(uint16_t*)0x200000ba = 2; memcpy((void*)0x200000bc, "syz2\000", 5); *(uint64_t*)0x20000cc8 = 0x44; *(uint64_t*)0x20000d18 = 1; *(uint64_t*)0x20000d20 = 0; *(uint64_t*)0x20000d28 = 0; *(uint32_t*)0x20000d30 = 0; syscall(__NR_sendmsg, r[1], 0x20000d00ul, 0ul); return 0; }