// https://syzkaller.appspot.com/bug?id=556e390bf27cfe4ab863fa16072c21c1a0d19227
// 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;
      }
    }
  }
}

uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffff};
void execute_call(int call)
{
  long res;
  switch (call) {
  case 0:
    memcpy((void*)0x20000080, "/dev/vcsa#", 11);
    res = syz_open_dev(0x20000080, 4, 0x200);
    if (res != -1)
      r[0] = res;
    break;
  case 1:
    *(uint16_t*)0x20000140 = 0xa;
    *(uint16_t*)0x20000142 = htobe16(0x4e22);
    *(uint32_t*)0x20000144 = 4;
    *(uint8_t*)0x20000148 = 0xfe;
    *(uint8_t*)0x20000149 = 0x80;
    *(uint8_t*)0x2000014a = 0;
    *(uint8_t*)0x2000014b = 0;
    *(uint8_t*)0x2000014c = 0;
    *(uint8_t*)0x2000014d = 0;
    *(uint8_t*)0x2000014e = 0;
    *(uint8_t*)0x2000014f = 0;
    *(uint8_t*)0x20000150 = 0;
    *(uint8_t*)0x20000151 = 0;
    *(uint8_t*)0x20000152 = 0;
    *(uint8_t*)0x20000153 = 0;
    *(uint8_t*)0x20000154 = 0;
    *(uint8_t*)0x20000155 = 0;
    *(uint8_t*)0x20000156 = 0;
    *(uint8_t*)0x20000157 = 0xaa;
    *(uint32_t*)0x20000158 = 3;
    *(uint16_t*)0x2000015c = 2;
    *(uint16_t*)0x2000015e = htobe16(0x4e23);
    *(uint32_t*)0x20000160 = htobe32(0);
    *(uint8_t*)0x20000164 = 0;
    *(uint8_t*)0x20000165 = 0;
    *(uint8_t*)0x20000166 = 0;
    *(uint8_t*)0x20000167 = 0;
    *(uint8_t*)0x20000168 = 0;
    *(uint8_t*)0x20000169 = 0;
    *(uint8_t*)0x2000016a = 0;
    *(uint8_t*)0x2000016b = 0;
    *(uint16_t*)0x2000016c = 2;
    *(uint16_t*)0x2000016e = htobe16(0x4e20);
    *(uint8_t*)0x20000170 = 0xac;
    *(uint8_t*)0x20000171 = 0x14;
    *(uint8_t*)0x20000172 = 0x14;
    *(uint8_t*)0x20000173 = 0xaa;
    *(uint8_t*)0x20000174 = 0;
    *(uint8_t*)0x20000175 = 0;
    *(uint8_t*)0x20000176 = 0;
    *(uint8_t*)0x20000177 = 0;
    *(uint8_t*)0x20000178 = 0;
    *(uint8_t*)0x20000179 = 0;
    *(uint8_t*)0x2000017a = 0;
    *(uint8_t*)0x2000017b = 0;
    *(uint16_t*)0x2000017c = 2;
    *(uint16_t*)0x2000017e = htobe16(0x4e23);
    *(uint32_t*)0x20000180 = htobe32(-1);
    *(uint8_t*)0x20000184 = 0;
    *(uint8_t*)0x20000185 = 0;
    *(uint8_t*)0x20000186 = 0;
    *(uint8_t*)0x20000187 = 0;
    *(uint8_t*)0x20000188 = 0;
    *(uint8_t*)0x20000189 = 0;
    *(uint8_t*)0x2000018a = 0;
    *(uint8_t*)0x2000018b = 0;
    *(uint16_t*)0x2000018c = 2;
    *(uint16_t*)0x2000018e = htobe16(0x4e23);
    *(uint8_t*)0x20000190 = 0xac;
    *(uint8_t*)0x20000191 = 0x14;
    *(uint8_t*)0x20000192 = 0x14;
    *(uint8_t*)0x20000193 = 0x13;
    *(uint8_t*)0x20000194 = 0;
    *(uint8_t*)0x20000195 = 0;
    *(uint8_t*)0x20000196 = 0;
    *(uint8_t*)0x20000197 = 0;
    *(uint8_t*)0x20000198 = 0;
    *(uint8_t*)0x20000199 = 0;
    *(uint8_t*)0x2000019a = 0;
    *(uint8_t*)0x2000019b = 0;
    *(uint16_t*)0x2000019c = 2;
    *(uint16_t*)0x2000019e = htobe16(0x4e22);
    *(uint8_t*)0x200001a0 = 0xac;
    *(uint8_t*)0x200001a1 = 0x14;
    *(uint8_t*)0x200001a2 = 0x14;
    *(uint8_t*)0x200001a3 = 0xbb;
    *(uint8_t*)0x200001a4 = 0;
    *(uint8_t*)0x200001a5 = 0;
    *(uint8_t*)0x200001a6 = 0;
    *(uint8_t*)0x200001a7 = 0;
    *(uint8_t*)0x200001a8 = 0;
    *(uint8_t*)0x200001a9 = 0;
    *(uint8_t*)0x200001aa = 0;
    *(uint8_t*)0x200001ab = 0;
    *(uint16_t*)0x200001ac = 2;
    *(uint16_t*)0x200001ae = htobe16(0x4e23);
    *(uint32_t*)0x200001b0 = htobe32(0);
    *(uint8_t*)0x200001b4 = 0;
    *(uint8_t*)0x200001b5 = 0;
    *(uint8_t*)0x200001b6 = 0;
    *(uint8_t*)0x200001b7 = 0;
    *(uint8_t*)0x200001b8 = 0;
    *(uint8_t*)0x200001b9 = 0;
    *(uint8_t*)0x200001ba = 0;
    *(uint8_t*)0x200001bb = 0;
    *(uint16_t*)0x200001bc = 0xa;
    *(uint16_t*)0x200001be = htobe16(0x4e24);
    *(uint32_t*)0x200001c0 = 0x3f;
    *(uint8_t*)0x200001c4 = 0xfe;
    *(uint8_t*)0x200001c5 = 0x80;
    *(uint8_t*)0x200001c6 = 0;
    *(uint8_t*)0x200001c7 = 0;
    *(uint8_t*)0x200001c8 = 0;
    *(uint8_t*)0x200001c9 = 0;
    *(uint8_t*)0x200001ca = 0;
    *(uint8_t*)0x200001cb = 0;
    *(uint8_t*)0x200001cc = 0;
    *(uint8_t*)0x200001cd = 0;
    *(uint8_t*)0x200001ce = 0;
    *(uint8_t*)0x200001cf = 0;
    *(uint8_t*)0x200001d0 = 0;
    *(uint8_t*)0x200001d1 = 0;
    *(uint8_t*)0x200001d2 = 0;
    *(uint8_t*)0x200001d3 = 0xbb;
    *(uint32_t*)0x200001d4 = 0x8e;
    *(uint16_t*)0x200001d8 = 0xa;
    *(uint16_t*)0x200001da = htobe16(0x4e20);
    *(uint32_t*)0x200001dc = 1;
    *(uint8_t*)0x200001e0 = 0xfe;
    *(uint8_t*)0x200001e1 = 0x80;
    *(uint8_t*)0x200001e2 = 0;
    *(uint8_t*)0x200001e3 = 0;
    *(uint8_t*)0x200001e4 = 0;
    *(uint8_t*)0x200001e5 = 0;
    *(uint8_t*)0x200001e6 = 0;
    *(uint8_t*)0x200001e7 = 0;
    *(uint8_t*)0x200001e8 = 0;
    *(uint8_t*)0x200001e9 = 0;
    *(uint8_t*)0x200001ea = 0;
    *(uint8_t*)0x200001eb = 0;
    *(uint8_t*)0x200001ec = 0;
    *(uint8_t*)0x200001ed = 0;
    *(uint8_t*)0x200001ee = 0;
    *(uint8_t*)0x200001ef = 0xf;
    *(uint32_t*)0x200001f0 = 6;
    *(uint16_t*)0x200001f4 = 0xa;
    *(uint16_t*)0x200001f6 = htobe16(0x4e21);
    *(uint32_t*)0x200001f8 = 0xa6;
    *(uint8_t*)0x200001fc = 0xfe;
    *(uint8_t*)0x200001fd = 0x80;
    *(uint8_t*)0x200001fe = 0;
    *(uint8_t*)0x200001ff = 0;
    *(uint8_t*)0x20000200 = 0;
    *(uint8_t*)0x20000201 = 0;
    *(uint8_t*)0x20000202 = 0;
    *(uint8_t*)0x20000203 = 0;
    *(uint8_t*)0x20000204 = 0;
    *(uint8_t*)0x20000205 = 0;
    *(uint8_t*)0x20000206 = 0;
    *(uint8_t*)0x20000207 = 0;
    *(uint8_t*)0x20000208 = 0;
    *(uint8_t*)0x20000209 = 0;
    *(uint8_t*)0x2000020a = 0;
    *(uint8_t*)0x2000020b = 0xbb;
    *(uint32_t*)0x2000020c = 5;
    syscall(__NR_setsockopt, r[0], 0x84, 0x65, 0x20000140, 0xd0);
    break;
  case 2:
    memcpy((void*)0x20000100, "/dev/infiniband/rdma_cm", 24);
    res = syscall(__NR_openat, 0xffffffffffffff9c, 0x20000100, 2, 0);
    if (res != -1)
      r[1] = res;
    break;
  case 3:
    *(uint32_t*)0x20004140 = 0;
    *(uint16_t*)0x20004144 = 0x18;
    *(uint16_t*)0x20004146 = 0xfa00;
    *(uint64_t*)0x20004148 = 0;
    *(uint64_t*)0x20004150 = 0x20004100;
    *(uint16_t*)0x20004158 = 0x13f;
    *(uint8_t*)0x2000415a = 0;
    *(uint8_t*)0x2000415b = 0;
    *(uint8_t*)0x2000415c = 0;
    *(uint8_t*)0x2000415d = 0;
    *(uint8_t*)0x2000415e = 0;
    *(uint8_t*)0x2000415f = 0;
    res = syscall(__NR_write, r[1], 0x20004140, 0x20);
    if (res != -1)
      r[2] = *(uint32_t*)0x20004100;
    break;
  case 4:
    *(uint32_t*)0x20000040 = 1;
    *(uint16_t*)0x20000044 = 0x10;
    *(uint16_t*)0x20000046 = 0xfa00;
    *(uint64_t*)0x20000048 = 0x20000000;
    *(uint32_t*)0x20000050 = r[2];
    *(uint32_t*)0x20000054 = 0;
    syscall(__NR_write, r[1], 0x20000040, 0x18);
    break;
  }
}

void test()
{
  execute(5);
  collide = 1;
  execute(5);
}

int main()
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  for (;;) {
    loop();
  }
}