syzkaller-repros/linux/9c557bdc7328e1ab4f0325699da821c22e47ab93.c

// INFO: task hung
// https://syzkaller.appspot.com/bug?id=9c557bdc7328e1ab4f0325699da821c22e47ab93
// status:fixed
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#ifndef __NR_bpf
#define __NR_bpf 321
#endif

#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[29];
void test()
{
  memset(r, -1, sizeof(r));
  r[0] = syscall(__NR_mmap, 0x20000000ul, 0xef8000ul, 0x3ul, 0x32ul,
                 0xfffffffffffffffful, 0x0ul);
  *(uint32_t*)0x20b4cfd0 = (uint32_t)0x1;
  *(uint32_t*)0x20b4cfd4 = (uint32_t)0x2;
  *(uint64_t*)0x20b4cfd8 = (uint64_t)0x20ef3000;
  *(uint64_t*)0x20b4cfe0 = (uint64_t)0x20b4d000;
  *(uint32_t*)0x20b4cfe8 = (uint32_t)0x1;
  *(uint32_t*)0x20b4cfec = (uint32_t)0x80;
  *(uint64_t*)0x20b4cff0 = (uint64_t)0x2000a000;
  *(uint32_t*)0x20b4cff8 = (uint32_t)0x0;
  *(uint8_t*)0x20ef3000 = (uint8_t)0x8db7;
  *(uint8_t*)0x20ef3001 = (uint8_t)0x0;
  *(uint16_t*)0x20ef3002 = (uint16_t)0x0;
  *(uint32_t*)0x20ef3004 = (uint32_t)0x0;
  *(uint8_t*)0x20ef3008 = (uint8_t)0xd395;
  *(uint8_t*)0x20ef3009 = (uint8_t)0x0;
  *(uint16_t*)0x20ef300a = (uint16_t)0x0;
  *(uint32_t*)0x20ef300c = (uint32_t)0x0;
  memcpy((void*)0x20b4d000, "\x73\x79\x73\x65\x4f\x00", 6);
  r[18] = syscall(__NR_bpf, 0x5ul, 0x20b4cfd0ul, 0x30ul);
  r[19] = syscall(__NR_socket, 0x29ul, 0x5ul, 0x0ul);
  *(uint32_t*)0x20ef4000 = r[19];
  *(uint32_t*)0x20ef4004 = r[18];
  r[22] = syscall(__NR_ioctl, r[19], 0x89e0ul, 0x20ef4000ul);
  *(uint32_t*)0x20ef6ffc = r[19];
  r[24] = syscall(__NR_ioctl, r[19], 0x89e2ul, 0x20ef6ffcul);
  if (r[24] != -1)
    r[25] = *(uint32_t*)0x20ef6ffc;
  memcpy((void*)0x206d4fed, "\x2e\x6c\x9b\x1f\x66\x9d\x5e\xf3\xf5\xd3"
                            "\x67\xd6\x8f\x23\x5d\x02\x1b\x35\x73",
         19);
  r[27] = syscall(__NR_sendto, r[25], 0x206d4fedul, 0x13ul, 0x4080ul,
                  0x20000000ul, 0x0ul);
  r[28] = syscall(__NR_close, r[19]);
}

int main()
{
  loop();
  return 0;
}