// https://syzkaller.appspot.com/bug?id=316246e7e8747a8a70f92afa68413f3b8fd186e3 // 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 280 #endif #ifndef __NR_dup #define __NR_dup 23 #endif #ifndef __NR_mkdirat #define __NR_mkdirat 34 #endif #ifndef __NR_mmap #define __NR_mmap 222 #endif #ifndef __NR_mount #define __NR_mount 40 #endif #ifndef __NR_pipe2 #define __NR_pipe2 59 #endif #ifndef __NR_write #define __NR_write 64 #endif uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-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=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); const char* reason; (void)reason; intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } res = syscall(__NR_pipe2, /*pipefd=*/0x20000240ul, /*flags=*/0ul); if (res != -1) { r[0] = *(uint32_t*)0x20000240; r[1] = *(uint32_t*)0x20000244; } memcpy((void*)0x20000080, "\x15\x00\x00\x00\x65\xff\xff\x09\x7b\x00\x00\x08\x00\x39\x50\x32\x30" "\x30\x30\x2e\x4c", 21); syscall(__NR_write, /*fd=*/r[1], /*data=*/0x20000080ul, /*size=*/0x15ul); res = syscall(__NR_dup, /*oldfd=*/r[1]); if (res != -1) r[2] = res; *(uint32_t*)0x20000140 = 1; *(uint32_t*)0x20000144 = 0xe; *(uint64_t*)0x20000148 = 0x20000780; *(uint64_t*)0x20000150 = 0; *(uint32_t*)0x20000158 = 0; *(uint32_t*)0x2000015c = 0; *(uint64_t*)0x20000160 = 0; *(uint32_t*)0x20000168 = 0; *(uint32_t*)0x2000016c = 0; memset((void*)0x20000170, 0, 16); *(uint32_t*)0x20000180 = 0; *(uint32_t*)0x20000184 = 0; *(uint32_t*)0x20000188 = -1; *(uint32_t*)0x2000018c = 8; *(uint64_t*)0x20000190 = 0; *(uint32_t*)0x20000198 = 0; *(uint32_t*)0x2000019c = 0x10; *(uint64_t*)0x200001a0 = 0; *(uint32_t*)0x200001a8 = 0; *(uint32_t*)0x200001ac = 0; *(uint32_t*)0x200001b0 = -1; *(uint32_t*)0x200001b4 = 0; *(uint64_t*)0x200001b8 = 0; *(uint64_t*)0x200001c0 = 0; *(uint32_t*)0x200001c8 = 0x10; *(uint32_t*)0x200001cc = 0; *(uint32_t*)0x200001d0 = 0; syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x20000140ul, /*size=*/0x94ul); *(uint32_t*)0x20000100 = 0x18; *(uint32_t*)0x20000104 = 0; *(uint64_t*)0x20000108 = 0; *(uint64_t*)0x20000110 = 0; syscall(__NR_write, /*fd=*/r[2], /*arg=*/0x20000100ul, /*len=*/0x18ul); memcpy((void*)0x20000300, "\xb0\x00\x00\x00\x00\x00\x00\x00\x16\x59\xec\x08\x89\x41\x94\x29\xaa" "\x5d\xb9\x72\x88\xb0\xf8\xa8\x7e\xa8\xe6\x6d\x9a\x8b", 30); syscall(__NR_write, /*fd=*/r[2], /*arg=*/0x20000300ul, /*len=*/0xb0ul); memset((void*)0x20000140, 16, 1); syscall(__NR_write, /*fd=*/r[2], /*arg=*/0x20000140ul, /*len=*/0x10ul); memcpy((void*)0x20000000, "./file0\000", 8); syscall(__NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x20000000ul, /*mode=*/0ul); memcpy((void*)0x200003c0, "./file0\000", 8); memcpy((void*)0x20000b80, "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[2]); memcpy((void*)0x200005ba, ",posixacl", 9); syscall(__NR_mount, /*src=*/0ul, /*dst=*/0x200003c0ul, /*type=*/0x20000b80ul, /*flags=*/0ul, /*opts=*/0x20000580ul); return 0; }