// https://syzkaller.appspot.com/bug?id=b7640dae2467568f05425b289a1f004faa2dc292 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #ifndef __NR_execveat #define __NR_execveat 322 #endif uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-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=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); intptr_t res = 0; memcpy((void*)0x200015c0, "/dev/vhost-vsock\000", 17); res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x200015c0ul, /*flags=*/2ul, /*mode=*/0ul); if (res != -1) r[0] = res; syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0xaf01, /*arg=*/0ul); memcpy((void*)0x20000100, "./file1\000", 8); res = syscall( __NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000100ul, /*flags=O_CREAT|O_RDWR*/ 0x42ul, /*mode=S_IXOTH|S_IWOTH|S_IROTH|S_IXGRP|S_IWGRP|S_IRGRP|S_IXUSR|S_IWUSR|0x100*/ 0x1fful); if (res != -1) r[1] = res; *(uint8_t*)0x20000400 = 0x7f; *(uint8_t*)0x20000401 = 0x45; *(uint8_t*)0x20000402 = 0x4c; *(uint8_t*)0x20000403 = 0x46; *(uint8_t*)0x20000404 = 0xfc; *(uint8_t*)0x20000405 = 0; *(uint8_t*)0x20000406 = 0; *(uint8_t*)0x20000407 = 0; *(uint64_t*)0x20000408 = 0; *(uint16_t*)0x20000410 = 3; *(uint16_t*)0x20000412 = 0x3e; *(uint32_t*)0x20000414 = 0; *(uint64_t*)0x20000418 = 0; *(uint64_t*)0x20000420 = 0x40; *(uint64_t*)0x20000428 = 0; *(uint32_t*)0x20000430 = 0; *(uint16_t*)0x20000434 = 0; *(uint16_t*)0x20000436 = 0x38; *(uint16_t*)0x20000438 = 1; *(uint16_t*)0x2000043a = 0; *(uint16_t*)0x2000043c = 0; *(uint16_t*)0x2000043e = 0; *(uint32_t*)0x20000440 = 0; *(uint32_t*)0x20000444 = 0; *(uint64_t*)0x20000448 = 0; *(uint64_t*)0x20000450 = 0; *(uint64_t*)0x20000458 = 0; *(uint64_t*)0x20000460 = 0; *(uint64_t*)0x20000468 = 0; *(uint64_t*)0x20000470 = 0; syscall(__NR_write, /*fd=*/r[1], /*data=*/0x20000400ul, /*len=*/0x78ul); syscall(__NR_close, /*fd=*/r[1]); memcpy((void*)0x20000140, "./file1\000", 8); syscall(__NR_execveat, /*dirfd=*/0xffffff9c, /*file=*/0x20000140ul, /*argv=*/0ul, /*envp=*/0ul, /*flags=*/0ul); return 0; }