syzkaller-repros/linux/377386a07fe7dab185179260c8854ec248856cfb.c

// possible deadlock in flush_work
// https://syzkaller.appspot.com/bug?id=377386a07fe7dab185179260c8854ec248856cfb
// status:invalid
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <stdint.h>
#include <string.h>
#include <sys/syscall.h>
#include <unistd.h>

static void test();

void loop()
{
  while (1) {
    test();
  }
}

long r[4];
void test()
{
  memset(r, -1, sizeof(r));
  r[0] = syscall(__NR_mmap, 0x20000000ul, 0xfff000ul, 0x3ul, 0x32ul,
                 0xfffffffffffffffful, 0x0ul);
  memcpy((void*)0x20aeaff7, "\x2f\x64\x65\x76\x2f\x6b\x76\x6d\x00", 9);
  r[2] = syscall(__NR_openat, 0xffffffffffffff9cul, 0x20aeaff7ul, 0x0ul,
                 0x0ul);
  r[3] = syscall(__NR_ioctl, r[2], 0xae01ul, 0x0ul);
}

int main()
{
  int i;
  for (i = 0; i < 8; i++) {
    if (fork() == 0) {
      loop();
      return 0;
    }
  }
  sleep(1000000);
  return 0;
}