// https://syzkaller.appspot.com/bug?id=6dcd14a729df98f989c7b76d254226ae67084efd
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE
#include <endian.h>
#include <fcntl.h>
#include <linux/futex.h>
#include <pthread.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <unistd.h>

static uintptr_t syz_open_dev(uintptr_t a0, uintptr_t a1, uintptr_t a2)
{
  if (a0 == 0xc || a0 == 0xb) {
    char buf[128];
    sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1,
            (uint8_t)a2);
    return open(buf, O_RDWR, 0);
  } else {
    char buf[1024];
    char* hash;
    strncpy(buf, (char*)a0, sizeof(buf));
    buf[sizeof(buf) - 1] = 0;
    while ((hash = strchr(buf, '#'))) {
      *hash = '0' + (char)(a1 % 10);
      a1 /= 10;
    }
    return open(buf, a2, 0);
  }
}

static void test();

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

struct thread_t {
  int created, running, call;
  pthread_t th;
};

static struct thread_t threads[16];
static void execute_call(int call);
static int running;
static int collide;

static void* thr(void* arg)
{
  struct thread_t* th = (struct thread_t*)arg;
  for (;;) {
    while (!__atomic_load_n(&th->running, __ATOMIC_ACQUIRE))
      syscall(SYS_futex, &th->running, FUTEX_WAIT, 0, 0);
    execute_call(th->call);
    __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
    __atomic_store_n(&th->running, 0, __ATOMIC_RELEASE);
    syscall(SYS_futex, &th->running, FUTEX_WAKE);
  }
  return 0;
}

static void execute(int num_calls)
{
  int call, thread;
  running = 0;
  for (call = 0; call < num_calls; call++) {
    for (thread = 0; thread < sizeof(threads) / sizeof(threads[0]); thread++) {
      struct thread_t* th = &threads[thread];
      if (!th->created) {
        th->created = 1;
        pthread_attr_t attr;
        pthread_attr_init(&attr);
        pthread_attr_setstacksize(&attr, 128 << 10);
        pthread_create(&th->th, &attr, thr, th);
      }
      if (!__atomic_load_n(&th->running, __ATOMIC_ACQUIRE)) {
        th->call = call;
        __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
        __atomic_store_n(&th->running, 1, __ATOMIC_RELEASE);
        syscall(SYS_futex, &th->running, FUTEX_WAKE);
        if (collide && call % 2)
          break;
        struct timespec ts;
        ts.tv_sec = 0;
        ts.tv_nsec = 20 * 1000 * 1000;
        syscall(SYS_futex, &th->running, FUTEX_WAIT, 1, &ts);
        if (running)
          usleep((call == num_calls - 1) ? 10000 : 1000);
        break;
      }
    }
  }
}

#ifndef __NR_fcntl
#define __NR_fcntl 55
#endif
#ifndef __NR_execve
#define __NR_execve 11
#endif
#ifndef __NR_readv
#define __NR_readv 145
#endif
#ifndef __NR_mmap
#define __NR_mmap 192
#endif
#ifndef __NR_ioctl
#define __NR_ioctl 54
#endif
#undef __NR_mmap
#define __NR_mmap __NR_mmap2

long r[3];
void execute_call(int call)
{
  switch (call) {
  case 0:
    syscall(__NR_mmap, 0x20000000, 0xfff000, 3, 0x32, -1, 0);
    break;
  case 1:
    memcpy((void*)0x20dd5000, "/dev/snd/seq", 13);
    r[0] = syz_open_dev(0x20dd5000, 0, 0x400);
    break;
  case 2:
    *(uint8_t*)0x206bffb0 = 0;
    *(uint8_t*)0x206bffb1 = 5;
    *(uint8_t*)0x206bffb2 = 0xe;
    *(uint8_t*)0x206bffb3 = 0;
    *(uint32_t*)0x206bffb4 = 0;
    *(uint32_t*)0x206bffb8 = 3;
    *(uint8_t*)0x206bffbc = 1;
    *(uint8_t*)0x206bffbd = 0;
    *(uint8_t*)0x206bffbe = 0;
    *(uint8_t*)0x206bffbf = 0;
    *(uint8_t*)0x206bffc0 = 0;
    *(uint8_t*)0x206bffc1 = 0;
    *(uint8_t*)0x206bffc2 = 0;
    *(uint8_t*)0x206bffc3 = 0;
    *(uint8_t*)0x206bffc4 = 0;
    *(uint8_t*)0x206bffc5 = 0;
    *(uint8_t*)0x206bffc6 = 0;
    *(uint8_t*)0x206bffc7 = 0;
    *(uint8_t*)0x206bffc8 = 0;
    *(uint8_t*)0x206bffc9 = 0;
    *(uint8_t*)0x206bffca = 0;
    *(uint8_t*)0x206bffcb = 0;
    *(uint8_t*)0x206bffcc = 0;
    *(uint8_t*)0x206bffcd = 0;
    *(uint8_t*)0x206bffce = 0;
    *(uint8_t*)0x206bffcf = 0;
    *(uint8_t*)0x206bffd0 = 0;
    *(uint8_t*)0x206bffd1 = 0;
    *(uint8_t*)0x206bffd2 = 0;
    *(uint8_t*)0x206bffd3 = 0;
    *(uint8_t*)0x206bffd4 = 0;
    *(uint8_t*)0x206bffd5 = 0;
    *(uint8_t*)0x206bffd6 = 0;
    *(uint8_t*)0x206bffd7 = 0;
    *(uint8_t*)0x206bffd8 = 0;
    *(uint8_t*)0x206bffd9 = 0;
    *(uint8_t*)0x206bffda = 0;
    *(uint8_t*)0x206bffdb = 0;
    *(uint8_t*)0x206bffdc = 0;
    *(uint8_t*)0x206bffdd = 0;
    *(uint8_t*)0x206bffde = 0;
    *(uint8_t*)0x206bffdf = 0;
    *(uint8_t*)0x206bffe0 = 0;
    *(uint8_t*)0x206bffe1 = 0;
    *(uint8_t*)0x206bffe2 = 0;
    *(uint8_t*)0x206bffe3 = 0;
    *(uint8_t*)0x206bffe4 = 0;
    *(uint8_t*)0x206bffe5 = 0;
    *(uint8_t*)0x206bffe6 = 0;
    *(uint8_t*)0x206bffe7 = 0;
    *(uint8_t*)0x206bffe8 = 0;
    *(uint8_t*)0x206bffe9 = 0;
    *(uint8_t*)0x206bffea = 0;
    *(uint8_t*)0x206bffeb = 0;
    *(uint8_t*)0x206bffec = 0;
    *(uint8_t*)0x206bffed = 0;
    *(uint8_t*)0x206bffee = 0;
    *(uint8_t*)0x206bffef = 0;
    *(uint8_t*)0x206bfff0 = 0;
    *(uint8_t*)0x206bfff1 = 0;
    *(uint8_t*)0x206bfff2 = 0;
    *(uint8_t*)0x206bfff3 = 0;
    *(uint8_t*)0x206bfff4 = 0;
    *(uint8_t*)0x206bfff5 = 0;
    *(uint8_t*)0x206bfff6 = 0;
    *(uint8_t*)0x206bfff7 = 0;
    *(uint8_t*)0x206bfff8 = 0;
    *(uint8_t*)0x206bfff9 = 0;
    *(uint8_t*)0x206bfffa = 0;
    *(uint8_t*)0x206bfffb = 0;
    *(uint8_t*)0x206bfffc = 0;
    *(uint8_t*)0x206bfffd = 0;
    *(uint8_t*)0x206bfffe = 0;
    *(uint8_t*)0x206bffff = 0;
    syscall(__NR_ioctl, r[0], 0x40505330, 0x206bffb0);
    break;
  case 3:
    r[1] = syscall(__NR_fcntl, r[0], 9);
    break;
  case 4:
    syscall(__NR_fcntl, r[0], 8, r[1]);
    break;
  case 5:
    memcpy((void*)0x20844ff8, "./file0", 8);
    *(uint32_t*)0x20966ff8 = 0x20aa4000;
    memcpy((void*)0x20aa4000, "md5sumcgroupselfvboxnet0)),keyring", 35);
    *(uint32_t*)0x20a83000 = 0x20981ff6;
    *(uint32_t*)0x20a83004 = 0x20777000;
    *(uint32_t*)0x20a83008 = 0x2078a000;
    *(uint32_t*)0x20a8300c = 0x20299ffe;
    *(uint32_t*)0x20a83010 = 0x202b9fff;
    *(uint32_t*)0x20a83014 = 0x200d2000;
    *(uint32_t*)0x20a83018 = 0x2044bfff;
    *(uint32_t*)0x20a8301c = 0x2096c000;
    memcpy((void*)0x20981ff6, "%'", 3);
    memcpy((void*)0x20777000, "vboxnet0%", 10);
    memcpy((void*)0x2078a000, "])em1em1vmnet1md5sumsecurity]#vboxnet1nodev",
           44);
    memcpy((void*)0x20299ffe, "@", 2);
    memcpy((void*)0x202b9fff, "", 1);
    memcpy((void*)0x200d2000, "]", 2);
    memcpy((void*)0x2044bfff, "", 1);
    memcpy((void*)0x2096c000, "", 1);
    syscall(__NR_execve, 0x20844ff8, 0x20966ff8, 0x20a83000);
    break;
  case 6:
    memcpy((void*)0x20005000, "/dev/sg#", 9);
    r[2] = syz_open_dev(0x20005000, 0, 0x101000);
    break;
  case 7:
    *(uint32_t*)0x20ff4fe0 = 0x20163f7e;
    *(uint32_t*)0x20ff4fe4 = 0;
    *(uint32_t*)0x20ff4fe8 = 0x201e9000;
    *(uint32_t*)0x20ff4fec = 0x3f;
    syscall(__NR_readv, r[2], 0x20ff4fe0, 2);
    break;
  case 8:
    syscall(__NR_ioctl, r[2], 0x2285, 0x20007000);
    break;
  }
}

void test()
{
  memset(r, -1, sizeof(r));
  execute(9);
  collide = 1;
  execute(9);
}

int main()
{
  for (;;) {
    loop();
  }
}