| // KASAN: stack-out-of-bounds Read in xfrm_state_find (4) |
| // https://syzkaller.appspot.com/bug?id=d77a8bffdcb19176ebd494435f933a70ea36aaf4 |
| // status:fixed |
| // autogenerated by syzkaller (http://github.com/google/syzkaller) |
| |
| #define _GNU_SOURCE |
| #include <endian.h> |
| #include <stdint.h> |
| #include <string.h> |
| #include <sys/syscall.h> |
| #include <unistd.h> |
| |
| #define BITMASK_LEN(type, bf_len) (type)((1ull << (bf_len)) - 1) |
| |
| #define BITMASK_LEN_OFF(type, bf_off, bf_len) \ |
| (type)(BITMASK_LEN(type, (bf_len)) << (bf_off)) |
| |
| #define STORE_BY_BITMASK(type, addr, val, bf_off, bf_len) \ |
| if ((bf_off) == 0 && (bf_len) == 0) { \ |
| *(type*)(addr) = (type)(val); \ |
| } else { \ |
| type new_val = *(type*)(addr); \ |
| new_val &= ~BITMASK_LEN_OFF(type, (bf_off), (bf_len)); \ |
| new_val |= ((type)(val)&BITMASK_LEN(type, (bf_len))) << (bf_off); \ |
| *(type*)(addr) = new_val; \ |
| } |
| |
| struct csum_inet { |
| uint32_t acc; |
| }; |
| |
| static void csum_inet_init(struct csum_inet* csum) |
| { |
| csum->acc = 0; |
| } |
| |
| static void csum_inet_update(struct csum_inet* csum, const uint8_t* data, |
| size_t length) |
| { |
| if (length == 0) |
| return; |
| |
| size_t i; |
| for (i = 0; i < length - 1; i += 2) |
| csum->acc += *(uint16_t*)&data[i]; |
| |
| if (length & 1) |
| csum->acc += (uint16_t)data[length - 1]; |
| |
| while (csum->acc > 0xffff) |
| csum->acc = (csum->acc & 0xffff) + (csum->acc >> 16); |
| } |
| |
| static uint16_t csum_inet_digest(struct csum_inet* csum) |
| { |
| return ~csum->acc; |
| } |
| |
| uint64_t r[1] = {0xffffffffffffffff}; |
| void loop() |
| { |
| long res; |
| res = syscall(__NR_socket, 0xa, 0x2100000000000002, 0); |
| if (res != -1) |
| r[0] = res; |
| *(uint16_t*)0x20000000 = 0xa; |
| *(uint16_t*)0x20000002 = htobe16(0x4e22); |
| *(uint32_t*)0x20000004 = 0; |
| *(uint8_t*)0x20000008 = 0; |
| *(uint8_t*)0x20000009 = 0; |
| *(uint8_t*)0x2000000a = 0; |
| *(uint8_t*)0x2000000b = 0; |
| *(uint8_t*)0x2000000c = 0; |
| *(uint8_t*)0x2000000d = 0; |
| *(uint8_t*)0x2000000e = 0; |
| *(uint8_t*)0x2000000f = 0; |
| *(uint8_t*)0x20000010 = 0; |
| *(uint8_t*)0x20000011 = 0; |
| *(uint8_t*)0x20000012 = -1; |
| *(uint8_t*)0x20000013 = -1; |
| *(uint32_t*)0x20000014 = htobe32(0x7f000001); |
| *(uint32_t*)0x20000018 = 0; |
| syscall(__NR_connect, r[0], 0x20000000, 0x1c); |
| *(uint8_t*)0x20000080 = 0xfe; |
| *(uint8_t*)0x20000081 = 0x80; |
| *(uint8_t*)0x20000082 = 0; |
| *(uint8_t*)0x20000083 = 0; |
| *(uint8_t*)0x20000084 = 0; |
| *(uint8_t*)0x20000085 = 0; |
| *(uint8_t*)0x20000086 = 0; |
| *(uint8_t*)0x20000087 = 0; |
| *(uint8_t*)0x20000088 = 0; |
| *(uint8_t*)0x20000089 = 0; |
| *(uint8_t*)0x2000008a = 0; |
| *(uint8_t*)0x2000008b = 0; |
| *(uint8_t*)0x2000008c = 0; |
| *(uint8_t*)0x2000008d = 0; |
| *(uint8_t*)0x2000008e = 0; |
| *(uint8_t*)0x2000008f = 0xbb; |
| *(uint64_t*)0x20000090 = htobe64(0); |
| *(uint64_t*)0x20000098 = htobe64(1); |
| *(uint16_t*)0x200000a0 = htobe16(0x4e20); |
| *(uint16_t*)0x200000a2 = htobe16(0); |
| *(uint16_t*)0x200000a4 = htobe16(0x4e20); |
| *(uint16_t*)0x200000a6 = htobe16(0); |
| *(uint16_t*)0x200000a8 = 2; |
| *(uint8_t*)0x200000aa = 0; |
| *(uint8_t*)0x200000ab = 0; |
| *(uint8_t*)0x200000ac = 0; |
| *(uint32_t*)0x200000b0 = 0; |
| *(uint32_t*)0x200000b4 = 0; |
| *(uint64_t*)0x200000b8 = 0; |
| *(uint64_t*)0x200000c0 = 0; |
| *(uint64_t*)0x200000c8 = 2; |
| *(uint64_t*)0x200000d0 = 0; |
| *(uint64_t*)0x200000d8 = 0x100000000; |
| *(uint64_t*)0x200000e0 = 0; |
| *(uint64_t*)0x200000e8 = 0; |
| *(uint64_t*)0x200000f0 = 0; |
| *(uint64_t*)0x200000f8 = 0; |
| *(uint64_t*)0x20000100 = 0; |
| *(uint64_t*)0x20000108 = 0; |
| *(uint64_t*)0x20000110 = 0; |
| *(uint32_t*)0x20000118 = 0; |
| *(uint32_t*)0x2000011c = 0; |
| *(uint8_t*)0x20000120 = 1; |
| *(uint8_t*)0x20000121 = 0; |
| *(uint8_t*)0x20000122 = 0; |
| *(uint8_t*)0x20000123 = 0; |
| *(uint8_t*)0x20000128 = 0xac; |
| *(uint8_t*)0x20000129 = 0x14; |
| *(uint8_t*)0x2000012a = 0x14; |
| *(uint8_t*)0x2000012b = 0; |
| *(uint32_t*)0x20000138 = htobe32(0); |
| *(uint8_t*)0x2000013c = 0x2b; |
| *(uint16_t*)0x20000140 = 0xa; |
| *(uint32_t*)0x20000144 = htobe32(0xe0000001); |
| *(uint32_t*)0x20000154 = 0; |
| *(uint8_t*)0x20000158 = -1; |
| *(uint8_t*)0x20000159 = 0; |
| *(uint8_t*)0x2000015a = 1; |
| *(uint32_t*)0x2000015c = 0; |
| *(uint32_t*)0x20000160 = 0; |
| *(uint32_t*)0x20000164 = 0; |
| syscall(__NR_setsockopt, r[0], 0x29, 0x23, 0x20000080, 0xe8); |
| *(uint64_t*)0x20000580 = 0; |
| *(uint32_t*)0x20000588 = 0; |
| *(uint64_t*)0x20000590 = 0x200026c0; |
| *(uint64_t*)0x20000598 = 0; |
| *(uint64_t*)0x200005a0 = 0x20002780; |
| *(uint64_t*)0x200005a8 = 0; |
| *(uint32_t*)0x200005b0 = 0; |
| syscall(__NR_sendmsg, r[0], 0x20000580, 0); |
| *(uint8_t*)0x20000040 = 0xaa; |
| *(uint8_t*)0x20000041 = 0xaa; |
| *(uint8_t*)0x20000042 = 0xaa; |
| *(uint8_t*)0x20000043 = 0xaa; |
| *(uint8_t*)0x20000044 = 0xaa; |
| *(uint8_t*)0x20000045 = 0x19; |
| *(uint8_t*)0x20000046 = 0; |
| *(uint8_t*)0x20000047 = 0; |
| *(uint8_t*)0x20000048 = 0; |
| *(uint8_t*)0x20000049 = 0; |
| *(uint8_t*)0x2000004a = 0; |
| *(uint8_t*)0x2000004b = 0; |
| *(uint16_t*)0x2000004c = htobe16(0x800); |
| STORE_BY_BITMASK(uint8_t, 0x2000004e, 5, 0, 4); |
| STORE_BY_BITMASK(uint8_t, 0x2000004e, 4, 4, 4); |
| STORE_BY_BITMASK(uint8_t, 0x2000004f, 0, 0, 2); |
| STORE_BY_BITMASK(uint8_t, 0x2000004f, 0, 2, 6); |
| *(uint16_t*)0x20000050 = htobe16(0x1c); |
| *(uint16_t*)0x20000052 = htobe16(0); |
| *(uint16_t*)0x20000054 = htobe16(-1); |
| *(uint8_t*)0x20000056 = 0; |
| *(uint8_t*)0x20000057 = 0x89; |
| *(uint16_t*)0x20000058 = 0; |
| *(uint8_t*)0x2000005a = 0xac; |
| *(uint8_t*)0x2000005b = 0x14; |
| *(uint8_t*)0x2000005c = 0x14; |
| *(uint8_t*)0x2000005d = 0; |
| *(uint8_t*)0x2000005e = 0xac; |
| *(uint8_t*)0x2000005f = 0x14; |
| *(uint8_t*)0x20000060 = 0x14; |
| *(uint8_t*)0x20000061 = 0xbb; |
| *(uint16_t*)0x20000062 = htobe16(0x4e20); |
| *(uint16_t*)0x20000064 = htobe16(0x4e20); |
| *(uint16_t*)0x20000066 = htobe16(8); |
| *(uint16_t*)0x20000068 = 0; |
| *(uint32_t*)0x20000000 = 0; |
| *(uint32_t*)0x20000004 = 2; |
| *(uint32_t*)0x20000008 = 0; |
| *(uint32_t*)0x2000000c = 0; |
| *(uint32_t*)0x20000010 = 0x80; |
| *(uint32_t*)0x20000014 = 0; |
| struct csum_inet csum_1; |
| csum_inet_init(&csum_1); |
| csum_inet_update(&csum_1, (const uint8_t*)0x2000005a, 4); |
| csum_inet_update(&csum_1, (const uint8_t*)0x2000005e, 4); |
| uint16_t csum_1_chunk_2 = 0x1100; |
| csum_inet_update(&csum_1, (const uint8_t*)&csum_1_chunk_2, 2); |
| uint16_t csum_1_chunk_3 = 0x800; |
| csum_inet_update(&csum_1, (const uint8_t*)&csum_1_chunk_3, 2); |
| csum_inet_update(&csum_1, (const uint8_t*)0x20000062, 8); |
| *(uint16_t*)0x20000068 = csum_inet_digest(&csum_1); |
| struct csum_inet csum_2; |
| csum_inet_init(&csum_2); |
| csum_inet_update(&csum_2, (const uint8_t*)0x2000004e, 20); |
| *(uint16_t*)0x20000058 = csum_inet_digest(&csum_2); |
| } |
| |
| int main() |
| { |
| syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); |
| loop(); |
| return 0; |
| } |
