// https://syzkaller.appspot.com/bug?id=2668718853a3764ffe6976db2451c75e34780d67 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #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; \ } int main(void) { syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); memcpy((void*)0x20000180, "./file0", 8); syscall(__NR_mkdir, 0x20000180, 0); *(uint32_t*)0x2000a000 = 5; *(uint32_t*)0x2000a004 = 0x70; *(uint8_t*)0x2000a008 = 0; *(uint8_t*)0x2000a009 = 0; *(uint8_t*)0x2000a00a = 0; *(uint8_t*)0x2000a00b = 0; *(uint32_t*)0x2000a00c = 0; *(uint64_t*)0x2000a010 = 0; *(uint64_t*)0x2000a018 = 0; *(uint64_t*)0x2000a020 = 0; STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 0, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 1, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 2, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 3, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 4, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 5, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 5, 6, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 7, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 8, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 9, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 10, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 11, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 12, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 13, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 14, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 15, 2); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 17, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 18, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 19, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 20, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 21, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 22, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 23, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 24, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 25, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 26, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 27, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 28, 1); STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 29, 35); *(uint32_t*)0x2000a030 = 0; *(uint32_t*)0x2000a034 = 1; *(uint64_t*)0x2000a038 = 0; *(uint64_t*)0x2000a040 = 0; *(uint64_t*)0x2000a048 = 0xa000003fe; *(uint64_t*)0x2000a050 = 0; *(uint32_t*)0x2000a058 = 0xfffffffc; *(uint32_t*)0x2000a05c = 0; *(uint64_t*)0x2000a060 = 0; *(uint32_t*)0x2000a068 = 0; *(uint16_t*)0x2000a06c = 0; *(uint16_t*)0x2000a06e = 0; syscall(__NR_perf_event_open, 0x2000a000, 0, 0, -1, 0); memcpy((void*)0x20343ff8, "./file0", 8); memcpy((void*)0x2015bffc, "nfs", 4); syscall(__NR_mount, 0x20000080, 0x20343ff8, 0x2015bffc, 0, 0x2000a000); return 0; }