// https://syzkaller.appspot.com/bug?id=c654957ab36e38d089347cc6bf235e86de8354cd
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <errno.h>
#include <pthread.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mount.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>

#include <linux/futex.h>

#ifndef __NR_accept
#define __NR_accept 202
#endif
#ifndef __NR_bind
#define __NR_bind 200
#endif
#ifndef __NR_connect
#define __NR_connect 203
#endif
#ifndef __NR_listen
#define __NR_listen 201
#endif
#ifndef __NR_mmap
#define __NR_mmap 222
#endif
#ifndef __NR_readv
#define __NR_readv 65
#endif
#ifndef __NR_recvmsg
#define __NR_recvmsg 212
#endif
#ifndef __NR_sendmsg
#define __NR_sendmsg 211
#endif
#ifndef __NR_setsockopt
#define __NR_setsockopt 208
#endif
#ifndef __NR_socket
#define __NR_socket 198
#endif

static void sleep_ms(uint64_t ms)
{
  usleep(ms * 1000);
}

static uint64_t current_time_ms(void)
{
  struct timespec ts;
  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    exit(1);
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

static void thread_start(void* (*fn)(void*), void* arg)
{
  pthread_t th;
  pthread_attr_t attr;
  pthread_attr_init(&attr);
  pthread_attr_setstacksize(&attr, 128 << 10);
  int i = 0;
  for (; i < 100; i++) {
    if (pthread_create(&th, &attr, fn, arg) == 0) {
      pthread_attr_destroy(&attr);
      return;
    }
    if (errno == EAGAIN) {
      usleep(50);
      continue;
    }
    break;
  }
  exit(1);
}

typedef struct {
  int state;
} event_t;

static void event_init(event_t* ev)
{
  ev->state = 0;
}

static void event_reset(event_t* ev)
{
  ev->state = 0;
}

static void event_set(event_t* ev)
{
  if (ev->state)
    exit(1);
  __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE);
  syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1000000);
}

static void event_wait(event_t* ev)
{
  while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0);
}

static int event_isset(event_t* ev)
{
  return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE);
}

static int event_timedwait(event_t* ev, uint64_t timeout)
{
  uint64_t start = current_time_ms();
  uint64_t now = start;
  for (;;) {
    uint64_t remain = timeout - (now - start);
    struct timespec ts;
    ts.tv_sec = remain / 1000;
    ts.tv_nsec = (remain % 1000) * 1000 * 1000;
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts);
    if (__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
      return 1;
    now = current_time_ms();
    if (now - start > timeout)
      return 0;
  }
}

struct thread_t {
  int created, call;
  event_t ready, done;
};

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

static void* thr(void* arg)
{
  struct thread_t* th = (struct thread_t*)arg;
  for (;;) {
    event_wait(&th->ready);
    event_reset(&th->ready);
    execute_call(th->call);
    __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
    event_set(&th->done);
  }
  return 0;
}

static void loop(void)
{
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  int i, call, thread;
  for (call = 0; call < 13; call++) {
    for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0]));
         thread++) {
      struct thread_t* th = &threads[thread];
      if (!th->created) {
        th->created = 1;
        event_init(&th->ready);
        event_init(&th->done);
        event_set(&th->done);
        thread_start(thr, th);
      }
      if (!event_isset(&th->done))
        continue;
      event_reset(&th->done);
      th->call = call;
      __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
      event_set(&th->ready);
      event_timedwait(&th->done, 50);
      break;
    }
  }
  for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
    sleep_ms(1);
}

uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    //  socket$inet_tcp arguments: [
    //    domain: const = 0x2 (8 bytes)
    //    type: const = 0x1 (8 bytes)
    //    proto: const = 0x0 (4 bytes)
    //  ]
    //  returns sock_tcp
    res = syscall(__NR_socket, /*domain=*/2ul, /*type=*/1ul, /*proto=*/0);
    if (res != -1)
      r[0] = res;
    break;
  case 1:
    //  bind$inet arguments: [
    //    fd: sock_in (resource)
    //    addr: ptr[in, sockaddr_in] {
    //      sockaddr_in {
    //        family: const = 0x2 (2 bytes)
    //        port: int16be = 0x4e20 (2 bytes)
    //        addr: union ipv4_addr {
    //          loopback: const = 0x7f000001 (4 bytes)
    //        }
    //        pad = 0x0 (8 bytes)
    //      }
    //    }
    //    addrlen: len = 0x10 (8 bytes)
    //  ]
    *(uint16_t*)0x20000200 = 2;
    *(uint16_t*)0x20000202 = htobe16(0x4e20);
    *(uint32_t*)0x20000204 = htobe32(0x7f000001);
    syscall(__NR_bind, /*fd=*/r[0], /*addr=*/0x20000200ul, /*addrlen=*/0x10ul);
    break;
  case 2:
    //  listen arguments: [
    //    fd: sock (resource)
    //    backlog: int32 = 0x5 (4 bytes)
    //  ]
    syscall(__NR_listen, /*fd=*/r[0], /*backlog=*/5);
    break;
  case 3:
    //  socket$inet_tcp arguments: [
    //    domain: const = 0x2 (8 bytes)
    //    type: const = 0x1 (8 bytes)
    //    proto: const = 0x0 (4 bytes)
    //  ]
    //  returns sock_tcp
    res = syscall(__NR_socket, /*domain=*/2ul, /*type=*/1ul, /*proto=*/0);
    if (res != -1)
      r[1] = res;
    break;
  case 4:
    //  connect$inet arguments: [
    //    fd: sock_in (resource)
    //    addr: ptr[in, sockaddr_in] {
    //      sockaddr_in {
    //        family: const = 0x2 (2 bytes)
    //        port: int16be = 0x4e20 (2 bytes)
    //        addr: union ipv4_addr {
    //          loopback: const = 0x7f000001 (4 bytes)
    //        }
    //        pad = 0x0 (8 bytes)
    //      }
    //    }
    //    addrlen: len = 0x10 (8 bytes)
    //  ]
    *(uint16_t*)0x20000200 = 2;
    *(uint16_t*)0x20000202 = htobe16(0x4e20);
    *(uint32_t*)0x20000204 = htobe32(0x7f000001);
    syscall(__NR_connect, /*fd=*/r[1], /*addr=*/0x20000200ul,
            /*addrlen=*/0x10ul);
    break;
  case 5:
    //  accept$inet arguments: [
    //    fd: sock_in (resource)
    //    peer: nil
    //    peerlen: nil
    //  ]
    //  returns sock_in
    res = syscall(__NR_accept, /*fd=*/r[0], /*peer=*/0ul, /*peerlen=*/0ul);
    if (res != -1)
      r[2] = res;
    break;
  case 6:
    //  setsockopt$inet_tcp_TCP_ULP arguments: [
    //    fd: sock_tcp (resource)
    //    level: const = 0x6 (4 bytes)
    //    optname: const = 0x1f (4 bytes)
    //    optval: ptr[in, buffer] {
    //      buffer: {74 6c 73} (length 0x3)
    //    }
    //    optlen: len = 0x4 (8 bytes)
    //  ]
    memcpy((void*)0x20000000, "tls", 3);
    syscall(__NR_setsockopt, /*fd=*/r[2], /*level=*/6, /*optname=*/0x1f,
            /*optval=*/0x20000000ul, /*optlen=*/4ul);
    break;
  case 7:
    //  readv arguments: [
    //    fd: fd (resource)
    //    vec: ptr[in, array[iovec[out, array[int8]]]] {
    //      array[iovec[out, array[int8]]] {
    //        iovec[out, array[int8]] {
    //          addr: ptr[out, buffer] {
    //            buffer: (DirOut)
    //          }
    //          len: len = 0x69 (8 bytes)
    //        }
    //      }
    //    }
    //    vlen: len = 0x1 (8 bytes)
    //  ]
    *(uint64_t*)0x20000680 = 0x200003c0;
    *(uint64_t*)0x20000688 = 0x69;
    syscall(__NR_readv, /*fd=*/r[2], /*vec=*/0x20000680ul, /*vlen=*/1ul);
    break;
  case 8:
    //  setsockopt$inet_tcp_TLS_RX arguments: [
    //    fd: sock_tcp (resource)
    //    level: const = 0x11a (4 bytes)
    //    optname: const = 0x2 (4 bytes)
    //    optval: ptr[in, tls_crypto_info_u] {
    //      union tls_crypto_info_u {
    //        gcm_128: tls12_crypto_info_aes_gcm_128 {
    //          info: tls_crypto_info[TLS_CIPHER_AES_GCM_128] {
    //            version: tls_crypto_version = 0x303 (2 bytes)
    //            cipher_type: const = 0x33 (2 bytes)
    //          }
    //          iv: buffer: {00 00 00 00 00 00 00 00} (length 0x8)
    //          key: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00}
    //          (length 0x10) salt: buffer: {00 00 00 00} (length 0x4) rec_seq:
    //          buffer: {00 00 00 00 00 00 00 00} (length 0x8)
    //        }
    //      }
    //    }
    //    optlen: len = 0x28 (8 bytes)
    //  ]
    *(uint16_t*)0x20000080 = 0x303;
    *(uint16_t*)0x20000082 = 0x33;
    memset((void*)0x20000084, 0, 8);
    memset((void*)0x2000008c, 0, 16);
    memset((void*)0x2000009c, 0, 4);
    memset((void*)0x200000a0, 0, 8);
    syscall(__NR_setsockopt, /*fd=*/r[2], /*level=*/0x11a, /*optname=*/2,
            /*optval=*/0x20000080ul, /*optlen=*/0x28ul);
    break;
  case 9:
    //  setsockopt$inet_tcp_TCP_ULP arguments: [
    //    fd: sock_tcp (resource)
    //    level: const = 0x6 (4 bytes)
    //    optname: const = 0x1f (4 bytes)
    //    optval: ptr[in, buffer] {
    //      buffer: {74 6c 73} (length 0x3)
    //    }
    //    optlen: len = 0x4 (8 bytes)
    //  ]
    memcpy((void*)0x20000040, "tls", 3);
    syscall(__NR_setsockopt, /*fd=*/r[1], /*level=*/6, /*optname=*/0x1f,
            /*optval=*/0x20000040ul, /*optlen=*/4ul);
    break;
  case 10:
    //  setsockopt$inet_tcp_TLS_TX arguments: [
    //    fd: sock_tcp (resource)
    //    level: const = 0x11a (4 bytes)
    //    optname: const = 0x1 (4 bytes)
    //    optval: ptr[in, tls_crypto_info_u] {
    //      union tls_crypto_info_u {
    //        gcm_128: tls12_crypto_info_aes_gcm_128 {
    //          info: tls_crypto_info[TLS_CIPHER_AES_GCM_128] {
    //            version: tls_crypto_version = 0x303 (2 bytes)
    //            cipher_type: const = 0x33 (2 bytes)
    //          }
    //          iv: buffer: {00 00 00 00 00 00 00 00} (length 0x8)
    //          key: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00}
    //          (length 0x10) salt: buffer: {00 00 00 00} (length 0x4) rec_seq:
    //          buffer: {00 00 00 00 00 00 00 00} (length 0x8)
    //        }
    //      }
    //    }
    //    optlen: len = 0x28 (8 bytes)
    //  ]
    *(uint16_t*)0x200000c0 = 0x303;
    *(uint16_t*)0x200000c2 = 0x33;
    memset((void*)0x200000c4, 0, 8);
    memset((void*)0x200000cc, 0, 16);
    memset((void*)0x200000dc, 0, 4);
    memset((void*)0x200000e0, 0, 8);
    syscall(__NR_setsockopt, /*fd=*/r[1], /*level=*/0x11a, /*optname=*/1,
            /*optval=*/0x200000c0ul, /*optlen=*/0x28ul);
    break;
  case 11:
    //  sendmsg arguments: [
    //    fd: sock (resource)
    //    msg: ptr[in, send_msghdr] {
    //      send_msghdr {
    //        msg_name: nil
    //        msg_namelen: len = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //        msg_iov: ptr[in, array[iovec[in, array[int8]]]] {
    //          array[iovec[in, array[int8]]] {
    //            iovec[in, array[int8]] {
    //              addr: ptr[in, buffer] {
    //                buffer: {01} (length 0x1)
    //              }
    //              len: len = 0x1 (8 bytes)
    //            }
    //          }
    //        }
    //        msg_iovlen: len = 0x1 (8 bytes)
    //        msg_control: ptr[inout, array[ANYUNION]] {
    //          array[ANYUNION] {
    //            union ANYUNION {
    //              ANYBLOB: buffer: {18 00 00 00 00 00 00 00 1a 01 00 00 01}
    //              (length 0xd)
    //            }
    //          }
    //        }
    //        msg_controllen: bytesize = 0x18 (8 bytes)
    //        msg_flags: const = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //      }
    //    }
    //    f: send_flags = 0x0 (8 bytes)
    //  ]
    *(uint64_t*)0x20000180 = 0;
    *(uint32_t*)0x20000188 = 0;
    *(uint64_t*)0x20000190 = 0x20000100;
    *(uint64_t*)0x20000100 = 0x20000140;
    memset((void*)0x20000140, 1, 1);
    *(uint64_t*)0x20000108 = 1;
    *(uint64_t*)0x20000198 = 1;
    *(uint64_t*)0x200001a0 = 0x20000440;
    memcpy((void*)0x20000440,
           "\x18\x00\x00\x00\x00\x00\x00\x00\x1a\x01\x00\x00\x01", 13);
    *(uint64_t*)0x200001a8 = 0x18;
    *(uint32_t*)0x200001b0 = 0;
    syscall(__NR_sendmsg, /*fd=*/r[1], /*msg=*/0x20000180ul, /*f=*/0ul);
    break;
  case 12:
    //  recvmsg arguments: [
    //    fd: sock (resource)
    //    msg: ptr[inout, recv_msghdr] {
    //      recv_msghdr {
    //        msg_name: nil
    //        msg_namelen: len = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //        msg_iov: ptr[in, array[iovec[out, array[int8]]]] {
    //          array[iovec[out, array[int8]]] {
    //            iovec[out, array[int8]] {
    //              addr: ptr[out, buffer] {
    //                buffer: (DirOut)
    //              }
    //              len: len = 0x53 (8 bytes)
    //            }
    //          }
    //        }
    //        msg_iovlen: len = 0x1 (8 bytes)
    //        msg_control: nil
    //        msg_controllen: bytesize = 0x0 (8 bytes)
    //        msg_flags: const = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //      }
    //    }
    //    f: recv_flags = 0x2 (8 bytes)
    //  ]
    *(uint64_t*)0x20000280 = 0;
    *(uint32_t*)0x20000288 = 0;
    *(uint64_t*)0x20000290 = 0x200006c0;
    *(uint64_t*)0x200006c0 = 0x20000540;
    *(uint64_t*)0x200006c8 = 0x53;
    *(uint64_t*)0x20000298 = 1;
    *(uint64_t*)0x200002a0 = 0;
    *(uint64_t*)0x200002a8 = 0;
    *(uint32_t*)0x200002b0 = 0;
    syscall(__NR_recvmsg, /*fd=*/r[2], /*msg=*/0x20000280ul, /*f=MSG_PEEK*/ 2ul,
            0);
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  loop();
  return 0;
}