// https://syzkaller.appspot.com/bug?id=45251caf911e74c2d20cbd4b39091fdead9d54fd // autogenerated by syzkaller (http://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include __attribute__((noreturn)) static void doexit(int status) { volatile unsigned i; syscall(__NR_exit_group, status); for (i = 0;; i++) { } } #include #include #include #include #include #include #include const int kFailStatus = 67; const int kRetryStatus = 69; static void fail(const char* msg, ...) { int e = errno; va_list args; va_start(args, msg); vfprintf(stderr, msg, args); va_end(args); fprintf(stderr, " (errno %d)\n", e); doexit((e == ENOMEM || e == EAGAIN) ? kRetryStatus : kFailStatus); } static void use_temporary_dir() { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) fail("failed to mkdtemp"); if (chmod(tmpdir, 0777)) fail("failed to chmod"); if (chdir(tmpdir)) fail("failed to chdir"); } uint64_t r[1] = {0xffffffffffffffff}; void loop() { long res = 0; res = syscall(__NR_socket, 0x10, 0x200000000002, 0xc); if (res != -1) r[0] = res; memcpy((void*)0x20000080, "\x1f\x00\x00\x00\x00\x07\xfd\x02\x01\x0c\x00\xf6\x00\x00\xff\x00\x81" "\x09\xf8\x00\x09\x00\x01\x80\x06\xe5\x44\xec\x00\x00\x00\xa8\x22\x5e" "\x78\xb1\xae\x55\x32\xe4\x8a\x50\xbb\xb7\xd5\x6d\x06\x93\x83\x52\xc9" "\xd2\xd8\x5e\x72\xdb\x94\x9e\xf5\x1d\x4f\x31\xa0\x76\xcc\x46\xc0\x35" "\x81\x1b\x3e\x74\x92\xcb\x8e\x58\xb3\xb5\x57\x79\xf7\x10\xef\xa2\x3a" "\x8a\x55\xb2\x4b\xf4\x2a\x0e\xd4\xa0\x60\x73\x75\xfa\xd0\x3e\x96\x0e" "\x38\x99\xb6\x1f\x00\x40\xf9\xfa\xbb\x48\x59\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00", 123); syscall(__NR_write, r[0], 0x20000080, 0x7b); } int main() { syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); use_temporary_dir(); loop(); return 0; }