// https://syzkaller.appspot.com/bug?id=4522c4fb3896c243a66d4bda935f828e80899c2c // autogenerated by syzkaller (http://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #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); } } #ifndef __NR_write #define __NR_write 4 #endif #ifndef __NR_readv #define __NR_readv 145 #endif #ifndef __NR_mmap #define __NR_mmap 192 #endif #undef __NR_mmap #define __NR_mmap __NR_mmap2 long r[1]; void loop() { memset(r, -1, sizeof(r)); syscall(__NR_mmap, 0x20000000, 0xfff000, 3, 0x32, -1, 0); memcpy((void*)0x2002a000, "/dev/sg#", 9); r[0] = syz_open_dev(0x2002a000, 0, 0x142); memcpy((void*)0x20016f2f, "\xae\x68\xb4\x1f\xaf\x67\x33\xc7\x68\xd9\xc7\x7d\x27\x4a\xb3\xd6\x7d" "\xba\xa0\x10\x44\xc0\xd2\x66\x18\x82\x9a\x68\xb0\x1b\x6e\x8d\xec\xa9" "\x3b\x15\x9d\x00\xb4\x42\x48\x6f\x36\x2b\x69\x6d\x4a\x1d\x3b\x24\x76" "\x08\x8d\xbc\xbf\xae\x2b\x59\x28\x39\x71\x77\x5e\x7b\xfe\x1a\x71\x83" "\xbd\xb4\x45\x2a\x9c\xc9\x51\x85\x13\x48\x92\x51\x16\x42\x2e\x2c\x04" "\xeb\x79\xb4", 88); syscall(__NR_write, r[0], 0x20016f2f, 0x58); *(uint32_t*)0x205f2f80 = 0x200c1000; *(uint32_t*)0x205f2f84 = 0xcc; *(uint32_t*)0x205f2f88 = 0x200cef63; *(uint32_t*)0x205f2f8c = 0; *(uint32_t*)0x205f2f90 = 0x20111000; *(uint32_t*)0x205f2f94 = 0; *(uint32_t*)0x205f2f98 = 0x20a43fcf; *(uint32_t*)0x205f2f9c = 0; *(uint32_t*)0x205f2fa0 = 0x20654000; *(uint32_t*)0x205f2fa4 = 0; *(uint32_t*)0x205f2fa8 = 0x201b0fc8; *(uint32_t*)0x205f2fac = 0; *(uint32_t*)0x205f2fb0 = 0x206e2f6c; *(uint32_t*)0x205f2fb4 = 0; *(uint32_t*)0x205f2fb8 = 0x20327fe7; *(uint32_t*)0x205f2fbc = 0; syscall(__NR_readv, r[0], 0x205f2f80, 8); } int main() { loop(); return 0; }