// https://syzkaller.appspot.com/bug?id=95b97b9a7a3c065d463930b72f9f678429eae50f // autogenerated by syzkaller (http://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include static uintptr_t syz_open_dev(uintptr_t a0, uintptr_t a1, uintptr_t a2) { if (a0 == 0xc || a0 == 0xb) { char buf[128]; sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1, (uint8_t)a2); return open(buf, O_RDWR, 0); } else { char buf[1024]; char* hash; strncpy(buf, (char*)a0, sizeof(buf)); buf[sizeof(buf) - 1] = 0; while ((hash = strchr(buf, '#'))) { *hash = '0' + (char)(a1 % 10); a1 /= 10; } return open(buf, a2, 0); } } long r[15]; void loop() { memset(r, -1, sizeof(r)); r[0] = syscall(__NR_mmap, 0x20000000ul, 0x2000ul, 0x3ul, 0x32ul, 0xfffffffffffffffful, 0x0ul); memcpy((void*)0x20001000, "\x2f\x64\x65\x76\x2f\x73\x67\x23\x00", 9); r[2] = syz_open_dev(0x20001000ul, 0x0ul, 0x2ul); *(uint64_t*)0x20001fdc = (uint64_t)0x0; *(uint64_t*)0x20001fe4 = (uint64_t)0x0; *(uint16_t*)0x20001fec = (uint16_t)0x3; *(uint16_t*)0x20001fee = (uint16_t)0x4; *(uint32_t*)0x20001ff0 = (uint32_t)0x9; *(uint64_t*)0x20001ff4 = (uint64_t)0x0; *(uint64_t*)0x20001ffc = (uint64_t)0x2710; *(uint16_t*)0x20002004 = (uint16_t)0x7; *(uint16_t*)0x20002006 = (uint16_t)0x7; *(uint32_t*)0x20002008 = (uint32_t)0x8; r[13] = syscall(__NR_write, r[2], 0x20001fdcul, 0x30ul); r[14] = syscall(__NR_read, r[2], 0x20000000ul, 0x0ul); } int main() { loop(); return 0; }