// https://syzkaller.appspot.com/bug?id=39a4157cb5958eedff56613c31d1b86dc424d4ff // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #ifndef __NR_bpf #define __NR_bpf 321 #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[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-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=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); intptr_t res = 0; *(uint32_t*)0x200009c0 = 0x12; *(uint32_t*)0x200009c4 = 1; *(uint32_t*)0x200009c8 = 8; *(uint32_t*)0x200009cc = 0xc; *(uint32_t*)0x200009d0 = 0; *(uint32_t*)0x200009d4 = -1; *(uint32_t*)0x200009d8 = 0; memset((void*)0x200009dc, 0, 16); *(uint32_t*)0x200009ec = 0; *(uint32_t*)0x200009f0 = -1; *(uint32_t*)0x200009f4 = 0; *(uint32_t*)0x200009f8 = 0; *(uint32_t*)0x200009fc = 0; *(uint64_t*)0x20000a00 = 0; res = syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x200009c0ul, /*size=*/0x48ul); if (res != -1) r[0] = res; *(uint32_t*)0x200000c0 = 0x11; *(uint32_t*)0x200000c4 = 0xd; *(uint64_t*)0x200000c8 = 0x20000280; memcpy((void*)0x20000280, "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x85" "\x00\x00\x00\x23\x00\x00\x00\x18\x11\x00\x00", 28); *(uint32_t*)0x2000029c = r[0]; memcpy((void*)0x200002a0, "\x00\x00\x00\x00\x00\x00\x00\x00\xb7\x08\x00\x00\x00\x00\x00\x00\x7b" "\x8a\xf8\xff\x00\x00\x00\x00\xbf\xa2\x00\x00\x00\x00\x00\x00\x07\x02" "\x00\x00\xf8\xff\xff\xff\xb7\x03\x00\x00\x08\x00\x00\x00\xb7\x04\x00" "\x00\x00\x00\x00\x00\x85\x00\x00\x00\x03\x00\x00\x00\x95", 65); *(uint64_t*)0x200000d0 = 0x20000040; memcpy((void*)0x20000040, "GPL\000", 4); *(uint32_t*)0x200000d8 = 0; *(uint32_t*)0x200000dc = 0; *(uint64_t*)0x200000e0 = 0; *(uint32_t*)0x200000e8 = 0; *(uint32_t*)0x200000ec = 0; memset((void*)0x200000f0, 0, 16); *(uint32_t*)0x20000100 = 0; *(uint32_t*)0x20000104 = 0; *(uint32_t*)0x20000108 = -1; *(uint32_t*)0x2000010c = 0; *(uint64_t*)0x20000110 = 0; *(uint32_t*)0x20000118 = 0; *(uint32_t*)0x2000011c = 0; *(uint64_t*)0x20000120 = 0; *(uint32_t*)0x20000128 = 0; *(uint32_t*)0x2000012c = 0; *(uint32_t*)0x20000130 = 0; *(uint32_t*)0x20000134 = 0; *(uint64_t*)0x20000138 = 0; *(uint64_t*)0x20000140 = 0; *(uint32_t*)0x20000148 = 0; *(uint32_t*)0x2000014c = 0; res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000c0ul, /*size=*/0x90ul); if (res != -1) r[1] = res; *(uint64_t*)0x200001c0 = 0x20000180; memcpy((void*)0x20000180, "kfree\000", 6); *(uint32_t*)0x200001c8 = r[1]; syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0x200001c0ul, /*size=*/0x10ul); *(uint32_t*)0x20000040 = 2; *(uint32_t*)0x20000044 = 0x80; *(uint8_t*)0x20000048 = 0xfd; *(uint8_t*)0x20000049 = 1; *(uint8_t*)0x2000004a = 0; *(uint8_t*)0x2000004b = 0; *(uint32_t*)0x2000004c = 0; *(uint64_t*)0x20000050 = 0; *(uint64_t*)0x20000058 = 0; *(uint64_t*)0x20000060 = 0; STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 0, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 1, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 2, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 3, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 4, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 5, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 6, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 7, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 8, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 9, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 10, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 11, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 12, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 13, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 14, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 15, 2); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 17, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 18, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 19, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 20, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 21, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 22, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 23, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 24, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 25, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 26, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 27, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 28, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 29, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 30, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 31, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 32, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 33, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 34, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 35, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 36, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 37, 1); STORE_BY_BITMASK(uint64_t, , 0x20000068, 0, 38, 26); *(uint32_t*)0x20000070 = 0; *(uint32_t*)0x20000074 = 0; *(uint64_t*)0x20000078 = 0; *(uint64_t*)0x20000080 = 0; *(uint64_t*)0x20000088 = 0; *(uint64_t*)0x20000090 = 0; *(uint32_t*)0x20000098 = 0; *(uint32_t*)0x2000009c = 0; *(uint64_t*)0x200000a0 = 0; *(uint32_t*)0x200000a8 = 0; *(uint16_t*)0x200000ac = 0; *(uint16_t*)0x200000ae = 0; *(uint32_t*)0x200000b0 = 0; *(uint32_t*)0x200000b4 = 0; *(uint64_t*)0x200000b8 = 0; syscall(__NR_perf_event_open, /*attr=*/0x20000040ul, /*pid=*/0, /*cpu=*/0ul, /*group=*/-1, /*flags=*/0ul); res = syscall(__NR_socketpair, /*domain=AF_UNIX*/ 1ul, /*type=SOCK_STREAM*/ 1ul, /*proto=*/0, /*fds=*/0x20000000ul); if (res != -1) r[2] = *(uint32_t*)0x20000004; *(uint32_t*)0x200000c0 = 0x12; *(uint32_t*)0x200000c4 = 2; *(uint32_t*)0x200000c8 = 4; *(uint32_t*)0x200000cc = 2; *(uint32_t*)0x200000d0 = 0; *(uint32_t*)0x200000d4 = -1; *(uint32_t*)0x200000d8 = 0; memset((void*)0x200000dc, 0, 16); *(uint32_t*)0x200000ec = 0; *(uint32_t*)0x200000f0 = -1; *(uint32_t*)0x200000f4 = 0; *(uint32_t*)0x200000f8 = 0; *(uint32_t*)0x200000fc = 0; *(uint64_t*)0x20000100 = 0; res = syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x200000c0ul, /*size=*/0x48ul); if (res != -1) r[3] = res; *(uint32_t*)0x20000600 = r[3]; *(uint64_t*)0x20000608 = 0x20000580; *(uint32_t*)0x20000580 = 2; *(uint64_t*)0x20000610 = 0x200005c0; *(uint32_t*)0x200005c0 = r[2]; *(uint64_t*)0x20000618 = 0; syscall(__NR_bpf, /*cmd=*/2ul, /*arg=*/0x20000600ul, /*size=*/0x20ul); *(uint32_t*)0x20000080 = r[3]; *(uint64_t*)0x20000088 = 0x20000040; *(uint64_t*)0x20000090 = 0; *(uint64_t*)0x20000098 = 0; syscall(__NR_bpf, /*cmd=*/3ul, /*arg=*/0x20000080ul, /*size=*/0x20ul); return 0; }