text: /* SPDX-License-Identifier: MIT */
  // https://syzkaller.appspot.com/bug?id=1f2ecd7a23dba87e5ca3505ec44514a462cfe8c0
  // autogenerated by syzkaller (https://github.com/google/syzkaller)
  
  #include <errno.h>
  #include <fcntl.h>
  #include <stdarg.h>
  #include <stdbool.h>
  #include <stdint.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <sys/socket.h>
  #include <sys/types.h>
  #include <sys/mman.h>
  #include <unistd.h>
  
  #include "liburing.h"
  #include "../src/syscall.h"
  
  static bool write_file(const char* file, const char* what, ...)
  {
    char buf[1024];
    va_list args;
    va_start(args, what);
    vsnprintf(buf, sizeof(buf), what, args);
    va_end(args);
    buf[sizeof(buf) - 1] = 0;
    int len = strlen(buf);
    int fd = open(file, O_WRONLY | O_CLOEXEC);
    if (fd == -1)
      return false;
    if (write(fd, buf, len) != len) {
      int err = errno;
      close(fd);
      errno = err;
      return false;
    }
    close(fd);
    return true;
  }
  
  static int inject_fault(int nth)
  {
    int fd;
    fd = open("/proc/thread-self/fail-nth", O_RDWR);
    if (fd == -1)
      exit(1);
    char buf[16];
    sprintf(buf, "%d", nth + 1);
    if (write(fd, buf, strlen(buf)) != (ssize_t)strlen(buf))
      exit(1);
    return fd;
  }
  
  static int setup_fault()
  {
    static struct {
      const char* file;
      const char* val;
      bool fatal;
    } files[] = {
        {"/sys/kernel/debug/failslab/ignore-gfp-wait", "N", true},
        {"/sys/kernel/debug/failslab/verbose", "0", false},
        {"/sys/kernel/debug/fail_futex/ignore-private", "N", false},
        {"/sys/kernel/debug/fail_page_alloc/verbose", "0", false},
        {"/sys/kernel/debug/fail_page_alloc/ignore-gfp-highmem", "N", false},
        {"/sys/kernel/debug/fail_page_alloc/ignore-gfp-wait", "N", false},
        {"/sys/kernel/debug/fail_page_alloc/min-order", "0", false},
    };
    unsigned i;
    for (i = 0; i < sizeof(files) / sizeof(files[0]); i++) {
      if (!write_file(files[i].file, files[i].val)) {
        if (files[i].fatal)
  	return 1;
      }
    }
    return 0;
  }
  
  #ifndef __NR_io_uring_register
  #define __NR_io_uring_register 427
  #endif
  #ifndef __NR_io_uring_setup
  #define __NR_io_uring_setup 425
  #endif
  
  uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};
  
  int main(int argc, char *argv[])
  {
    if (argc > 1)
      return 0;
    mmap((void *) 0x20000000ul, 0x1000000ul, 3ul, 0x32ul, -1, 0);
    if (setup_fault()) {
      printf("Test needs failslab/fail_futex/fail_page_alloc enabled, skipped\n");
      return 0;
    }
    intptr_t res = 0;
    *(uint32_t*)0x20000000 = 0;
    *(uint32_t*)0x20000004 = 0;
    *(uint32_t*)0x20000008 = 0;
    *(uint32_t*)0x2000000c = 0;
    *(uint32_t*)0x20000010 = 0;
    *(uint32_t*)0x20000014 = 0;
    *(uint32_t*)0x20000018 = 0;
    *(uint32_t*)0x2000001c = 0;
    *(uint32_t*)0x20000020 = 0;
    *(uint32_t*)0x20000024 = 0;
    *(uint32_t*)0x20000028 = 0;
    *(uint32_t*)0x2000002c = 0;
    *(uint32_t*)0x20000030 = 0;
    *(uint32_t*)0x20000034 = 0;
    *(uint32_t*)0x20000038 = 0;
    *(uint32_t*)0x2000003c = 0;
    *(uint32_t*)0x20000040 = 0;
    *(uint32_t*)0x20000044 = 0;
    *(uint64_t*)0x20000048 = 0;
    *(uint32_t*)0x20000050 = 0;
    *(uint32_t*)0x20000054 = 0;
    *(uint32_t*)0x20000058 = 0;
    *(uint32_t*)0x2000005c = 0;
    *(uint32_t*)0x20000060 = 0;
    *(uint32_t*)0x20000064 = 0;
    *(uint32_t*)0x20000068 = 0;
    *(uint32_t*)0x2000006c = 0;
    *(uint64_t*)0x20000070 = 0;
    res = __sys_io_uring_setup(0x6a6, (struct io_uring_params *) 0x20000000ul);
    if (res != -1)
      r[0] = res;
    res = socket(0x11ul, 2ul, 0x300ul);
    if (res != -1)
      r[1] = res;
    *(uint32_t*)0x20000080 = r[1];
    inject_fault(1);
    __sys_io_uring_register(r[0], 2ul, (const void *) 0x20000080ul, 1ul);
    return 0;
  }
  