| // KASAN: slab-out-of-bounds Read in ip6_xmit |
| // https://syzkaller.appspot.com/bug?id=a0962e4e2b48e01fc8079a3a1b3759d54925e547 |
| // status:open |
| // 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[2] = {0xffffffffffffffff, 0xffffffffffffffff}; |
| void loop() |
| { |
| long res; |
| res = syscall(__NR_socket, 0xa, 2, 0); |
| if (res != -1) |
| r[0] = res; |
| *(uint16_t*)0x20000000 = 0xa; |
| *(uint16_t*)0x20000002 = htobe16(0x4e20); |
| *(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 = 5; |
| syscall(__NR_connect, r[0], 0x20000000, 0x1c); |
| *(uint16_t*)0x200000c0 = 0xa; |
| *(uint16_t*)0x200000c2 = htobe16(0x4e22); |
| *(uint32_t*)0x200000c4 = 0xdba; |
| *(uint8_t*)0x200000c8 = -1; |
| *(uint8_t*)0x200000c9 = 1; |
| *(uint8_t*)0x200000ca = 0; |
| *(uint8_t*)0x200000cb = 0; |
| *(uint8_t*)0x200000cc = 0; |
| *(uint8_t*)0x200000cd = 0; |
| *(uint8_t*)0x200000ce = 0; |
| *(uint8_t*)0x200000cf = 0; |
| *(uint8_t*)0x200000d0 = 0; |
| *(uint8_t*)0x200000d1 = 0; |
| *(uint8_t*)0x200000d2 = 0; |
| *(uint8_t*)0x200000d3 = 0; |
| *(uint8_t*)0x200000d4 = 0; |
| *(uint8_t*)0x200000d5 = 0; |
| *(uint8_t*)0x200000d6 = 0; |
| *(uint8_t*)0x200000d7 = 1; |
| *(uint32_t*)0x200000d8 = 9; |
| syscall(__NR_connect, r[0], 0x200000c0, 0x1c); |
| res = syscall(__NR_socket, 0x18, 1, 1); |
| if (res != -1) |
| r[1] = res; |
| *(uint16_t*)0x205fafd2 = 0x18; |
| *(uint32_t*)0x205fafd4 = 1; |
| *(uint32_t*)0x205fafd8 = 0; |
| *(uint32_t*)0x205fafdc = r[0]; |
| *(uint16_t*)0x205fafe0 = 2; |
| *(uint16_t*)0x205fafe2 = htobe16(0x4e21); |
| *(uint32_t*)0x205fafe4 = htobe32(0xe0000002); |
| *(uint8_t*)0x205fafe8 = 0; |
| *(uint8_t*)0x205fafe9 = 0; |
| *(uint8_t*)0x205fafea = 0; |
| *(uint8_t*)0x205fafeb = 0; |
| *(uint8_t*)0x205fafec = 0; |
| *(uint8_t*)0x205fafed = 0; |
| *(uint8_t*)0x205fafee = 0; |
| *(uint8_t*)0x205fafef = 0; |
| *(uint32_t*)0x205faff0 = 4; |
| *(uint32_t*)0x205faff4 = 0; |
| *(uint32_t*)0x205faff8 = 2; |
| *(uint32_t*)0x205faffc = 0; |
| syscall(__NR_connect, r[1], 0x205fafd2, 0x2e); |
| *(uint64_t*)0x2037ffc8 = 0x20041000; |
| *(uint16_t*)0x20041000 = 0x10; |
| *(uint16_t*)0x20041002 = 0; |
| *(uint32_t*)0x20041004 = 0; |
| *(uint32_t*)0x20041008 = 2; |
| *(uint32_t*)0x2037ffd0 = 0xc; |
| *(uint64_t*)0x2037ffd8 = 0x20e6c000; |
| *(uint64_t*)0x20e6c000 = 0x20e6cff0; |
| *(uint32_t*)0x20e6cff0 = 0x10; |
| *(uint16_t*)0x20e6cff4 = 0x14; |
| *(uint16_t*)0x20e6cff6 = 0x200; |
| *(uint32_t*)0x20e6cff8 = 0; |
| *(uint32_t*)0x20e6cffc = 3; |
| *(uint64_t*)0x20e6c008 = 0x10; |
| *(uint64_t*)0x2037ffe0 = 1; |
| *(uint64_t*)0x2037ffe8 = 0; |
| *(uint64_t*)0x2037fff0 = 0; |
| *(uint32_t*)0x2037fff8 = 0x8800; |
| syscall(__NR_sendmsg, r[1], 0x2037ffc8, 0x81); |
| *(uint8_t*)0x20000000 = 1; |
| *(uint8_t*)0x20000001 = 0x80; |
| *(uint8_t*)0x20000002 = 0xc2; |
| *(uint8_t*)0x20000003 = 0; |
| *(uint8_t*)0x20000004 = 0; |
| *(uint8_t*)0x20000005 = 0; |
| *(uint8_t*)0x20000006 = 0xaa; |
| *(uint8_t*)0x20000007 = 0xaa; |
| *(uint8_t*)0x20000008 = 0xaa; |
| *(uint8_t*)0x20000009 = 0xaa; |
| *(uint8_t*)0x2000000a = 0; |
| *(uint8_t*)0x2000000b = 0; |
| *(uint16_t*)0x2000000c = htobe16(0x800); |
| STORE_BY_BITMASK(uint8_t, 0x2000000e, 5, 0, 4); |
| STORE_BY_BITMASK(uint8_t, 0x2000000e, 4, 4, 4); |
| STORE_BY_BITMASK(uint8_t, 0x2000000f, 0, 0, 2); |
| STORE_BY_BITMASK(uint8_t, 0x2000000f, 0, 2, 6); |
| *(uint16_t*)0x20000010 = htobe16(0x24); |
| *(uint16_t*)0x20000012 = htobe16(0); |
| *(uint16_t*)0x20000014 = htobe16(0); |
| *(uint8_t*)0x20000016 = 0; |
| *(uint8_t*)0x20000017 = 0x2f; |
| *(uint16_t*)0x20000018 = 0; |
| *(uint8_t*)0x2000001a = 0xac; |
| *(uint8_t*)0x2000001b = 0x14; |
| *(uint8_t*)0x2000001c = -1; |
| *(uint8_t*)0x2000001d = 0xaa; |
| *(uint32_t*)0x2000001e = htobe32(-1); |
| STORE_BY_BITMASK(uint16_t, 0x20000022, 0, 0, 1); |
| STORE_BY_BITMASK(uint16_t, 0x20000022, 0, 1, 1); |
| STORE_BY_BITMASK(uint16_t, 0x20000022, 1, 2, 1); |
| STORE_BY_BITMASK(uint16_t, 0x20000022, 0, 3, 1); |
| STORE_BY_BITMASK(uint16_t, 0x20000022, 0xb, 4, 4); |
| STORE_BY_BITMASK(uint16_t, 0x20000022, 0, 8, 1); |
| STORE_BY_BITMASK(uint16_t, 0x20000022, 3, 9, 4); |
| STORE_BY_BITMASK(uint16_t, 0x20000022, 8, 13, 3); |
| *(uint16_t*)0x20000024 = htobe16(0x880b); |
| *(uint16_t*)0x20000026 = htobe16(0); |
| *(uint16_t*)0x20000028 = htobe16(0); |
| STORE_BY_BITMASK(uint16_t, 0x2000002a, 0, 0, 1); |
| STORE_BY_BITMASK(uint16_t, 0x2000002a, 0, 1, 1); |
| STORE_BY_BITMASK(uint16_t, 0x2000002a, 0, 2, 1); |
| STORE_BY_BITMASK(uint16_t, 0x2000002a, 0, 3, 1); |
| STORE_BY_BITMASK(uint16_t, 0x2000002a, 0, 4, 9); |
| STORE_BY_BITMASK(uint16_t, 0x2000002a, 0, 13, 3); |
| *(uint16_t*)0x2000002c = htobe16(0x800); |
| STORE_BY_BITMASK(uint16_t, 0x2000002e, 0, 0, 1); |
| STORE_BY_BITMASK(uint16_t, 0x2000002e, 0, 1, 1); |
| STORE_BY_BITMASK(uint16_t, 0x2000002e, 0, 2, 1); |
| STORE_BY_BITMASK(uint16_t, 0x2000002e, 0, 3, 1); |
| STORE_BY_BITMASK(uint16_t, 0x2000002e, 0, 4, 9); |
| STORE_BY_BITMASK(uint16_t, 0x2000002e, 0, 13, 3); |
| *(uint16_t*)0x20000030 = htobe16(0x86dd); |
| *(uint16_t*)0x20000032 = 0; |
| *(uint16_t*)0x20000034 = htobe16(0); |
| *(uint32_t*)0x20000036 = htobe32(0); |
| STORE_BY_BITMASK(uint8_t, 0x2000003a, 0, 0, 4); |
| STORE_BY_BITMASK(uint8_t, 0x2000003a, 0, 4, 4); |
| *(uint8_t*)0x2000003b = 0; |
| STORE_BY_BITMASK(uint8_t, 0x2000003c, 0, 0, 2); |
| STORE_BY_BITMASK(uint8_t, 0x2000003c, 0, 2, 1); |
| STORE_BY_BITMASK(uint8_t, 0x2000003c, 0, 3, 2); |
| STORE_BY_BITMASK(uint8_t, 0x2000003c, 0, 5, 3); |
| *(uint8_t*)0x2000003d = 0; |
| *(uint32_t*)0x2000003e = 0; |
| *(uint32_t*)0x20000042 = htobe32(0); |
| *(uint16_t*)0x20000046 = 0; |
| *(uint16_t*)0x20000048 = htobe16(0); |
| *(uint32_t*)0x2000004a = htobe32(0); |
| STORE_BY_BITMASK(uint8_t, 0x2000004e, 0, 0, 4); |
| STORE_BY_BITMASK(uint8_t, 0x2000004e, 0, 4, 4); |
| *(uint8_t*)0x2000004f = 0; |
| STORE_BY_BITMASK(uint8_t, 0x20000050, 0, 0, 2); |
| STORE_BY_BITMASK(uint8_t, 0x20000050, 0, 2, 1); |
| STORE_BY_BITMASK(uint8_t, 0x20000050, 0, 3, 2); |
| STORE_BY_BITMASK(uint8_t, 0x20000050, 0, 5, 3); |
| *(uint8_t*)0x20000051 = 0; |
| *(uint32_t*)0x20000052 = 0; |
| *(uint32_t*)0x20000056 = htobe32(0); |
| *(uint16_t*)0x2000005a = htobe16(0); |
| STORE_BY_BITMASK(uint8_t, 0x2000005c, 0, 0, 2); |
| STORE_BY_BITMASK(uint8_t, 0x2000005c, 0, 2, 5); |
| STORE_BY_BITMASK(uint8_t, 0x2000005c, 0, 7, 1); |
| STORE_BY_BITMASK(uint8_t, 0x2000005d, 0, 0, 1); |
| STORE_BY_BITMASK(uint8_t, 0x2000005d, 0, 1, 2); |
| STORE_BY_BITMASK(uint8_t, 0x2000005d, 0, 3, 1); |
| STORE_BY_BITMASK(uint8_t, 0x2000005d, 0, 4, 1); |
| *(uint16_t*)0x2000005e = 0; |
| *(uint16_t*)0x20000060 = htobe16(0); |
| *(uint32_t*)0x20000062 = htobe32(0); |
| struct csum_inet csum_1; |
| csum_inet_init(&csum_1); |
| csum_inet_update(&csum_1, (const uint8_t*)0x2000000e, 20); |
| *(uint16_t*)0x20000018 = csum_inet_digest(&csum_1); |
| } |
| |
| int main() |
| { |
| syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); |
| loop(); |
| return 0; |
| } |
