// https://syzkaller.appspot.com/bug?id=a652ddf168ffc4273a60f6321077e72a156966e8 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul); syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul); syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul); intptr_t res = 0; memcpy((void*)0x20000280, "./file0\000", 8); syscall(__NR_mkdir, 0x20000280ul, 0ul); res = syscall(__NR_pipe2, 0x200001c0ul, 0ul); if (res != -1) { r[0] = *(uint32_t*)0x200001c0; r[1] = *(uint32_t*)0x200001c4; } memcpy((void*)0x20000340, "\x15\x00\x00\x00\x65\xff\xff\x01\x80\x00\x00\x08\x00\x39\x50\x32\x30" "\x30\x30\x2e\x4c", 21); syscall(__NR_write, r[1], 0x20000340ul, 0x15ul); res = syscall(__NR_dup, r[1]); if (res != -1) r[2] = res; *(uint32_t*)0x20000100 = 0x18; *(uint32_t*)0x20000104 = 0; *(uint64_t*)0x20000108 = 0; *(uint64_t*)0x20000110 = 0; syscall(__NR_write, r[2], 0x20000100ul, 0x18ul); *(uint32_t*)0x200000c0 = 0x14c; *(uint32_t*)0x200000c4 = 5; *(uint64_t*)0x200000c8 = 0; *(uint64_t*)0x200000d0 = 0; *(uint64_t*)0x200000d8 = 0; *(uint64_t*)0x200000e0 = 0; *(uint32_t*)0x200000e8 = 0; *(uint32_t*)0x200000ec = 0; syscall(__NR_write, r[2], 0x200000c0ul, 0x137ul); memcpy((void*)0x20000000, "./file0\000", 8); memcpy((void*)0x20000140, "9p\000", 3); memcpy((void*)0x20000580, "trans=fd,rfdno=", 15); sprintf((char*)0x2000058f, "0x%016llx", (long long)r[0]); memcpy((void*)0x200005a1, ",wfdno=", 7); sprintf((char*)0x200005a8, "0x%016llx", (long long)r[1]); syscall(__NR_mount, 0ul, 0x20000000ul, 0x20000140ul, 0ul, 0x20000580ul); memcpy((void*)0x20000080, "./file0\000", 8); memcpy((void*)0x20000180, "trusted.overlay.upper\000", 22); syscall(__NR_setxattr, 0x20000080ul, 0x20000180ul, 0x20000440ul, 0x44ul, 1ul); return 0; }