// https://syzkaller.appspot.com/bug?id=dbcb39beb96c35c5b1f579ec77a4c121d60d21a0
// 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/syscall.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>

#include <linux/futex.h>

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 < 6; 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[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    //  socket$alg arguments: [
    //    domain: const = 0x26 (8 bytes)
    //    type: const = 0x5 (8 bytes)
    //    proto: const = 0x0 (4 bytes)
    //  ]
    //  returns sock_alg
    res = syscall(__NR_socket, /*domain=*/0x26ul, /*type=*/5ul, /*proto=*/0);
    if (res != -1)
      r[0] = res;
    break;
  case 1:
    //  bind$alg arguments: [
    //    fd: sock_alg (resource)
    //    addr: ptr[in, sockaddr_alg] {
    //      sockaddr_alg {
    //        family: const = 0x26 (2 bytes)
    //        type: buffer: {73 6b 63 69 70 68 65 72 00 00 00 00 00 00} (length
    //        0xe) feat: af_alg_type = 0x0 (4 bytes) mask: af_alg_type = 0x0 (4
    //        bytes) name: buffer: {63 62 63 2d 73 65 72 70 65 6e 74 2d 61 76 78
    //        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    //        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    //        00 00 00 00 00} (length 0x40)
    //      }
    //    }
    //    addrlen: len = 0x58 (8 bytes)
    //  ]
    *(uint16_t*)0x200000000000 = 0x26;
    memcpy((void*)0x200000000002, "skcipher\000\000\000\000\000\000", 14);
    *(uint32_t*)0x200000000010 = 0;
    *(uint32_t*)0x200000000014 = 0;
    memcpy(
        (void*)0x200000000018,
        "cbc-serpent-"
        "avx\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
        "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
        "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000",
        64);
    syscall(__NR_bind, /*fd=*/r[0], /*addr=*/0x200000000000ul,
            /*addrlen=*/0x58ul);
    break;
  case 2:
    //  setsockopt$ALG_SET_KEY arguments: [
    //    fd: sock_alg (resource)
    //    level: const = 0x117 (4 bytes)
    //    opt: const = 0x1 (4 bytes)
    //    key: nil
    //    keylen: len = 0x0 (8 bytes)
    //  ]
    syscall(__NR_setsockopt, /*fd=*/r[0], /*level=*/0x117, /*opt=*/1,
            /*key=*/0ul, /*keylen=*/0ul);
    break;
  case 3:
    //  accept4 arguments: [
    //    fd: sock (resource)
    //    peer: nil
    //    peerlen: nil
    //    flags: accept_flags = 0x0 (8 bytes)
    //  ]
    //  returns sock
    res = syscall(__NR_accept4, /*fd=*/r[0], /*peer=*/0ul, /*peerlen=*/0ul,
                  /*flags=*/0ul);
    if (res != -1)
      r[1] = res;
    break;
  case 4:
    //  recvmsg$qrtr arguments: [
    //    fd: sock_qrtr (resource)
    //    msg: ptr[inout, recv_msghdr_qrtr] {
    //      recv_msghdr_qrtr {
    //        addr: nil
    //        addrlen: len = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //        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 = 0x1000 (8 bytes)
    //            }
    //          }
    //        }
    //        vlen: len = 0x1 (8 bytes)
    //        ctrl: nil
    //        ctrllen: bytesize = 0x0 (8 bytes)
    //        f: recv_flags = 0x12023 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //      }
    //    }
    //    msglen: len = 0x1c (8 bytes)
    //    f: recv_flags = 0x40002022 (8 bytes)
    //  ]
    *(uint64_t*)0x200000000480 = 0;
    *(uint32_t*)0x200000000488 = 0;
    *(uint64_t*)0x200000000490 = 0x200000000880;
    *(uint64_t*)0x200000000880 = 0x200000000980;
    *(uint64_t*)0x200000000888 = 0x1000;
    *(uint64_t*)0x200000000498 = 1;
    *(uint64_t*)0x2000000004a0 = 0;
    *(uint64_t*)0x2000000004a8 = 0;
    *(uint32_t*)0x2000000004b0 = 0x12023;
    syscall(
        __NR_recvmsg, /*fd=*/r[1], /*msg=*/0x200000000480ul, /*msglen=*/0x1cul,
        /*f=MSG_TRUNC|MSG_PEEK|MSG_ERRQUEUE|MSG_CMSG_CLOEXEC*/ 0x40002022ul);
    break;
  case 5:
    //  sendmsg$nl_route_sched_retired arguments: [
    //    fd: sock_nl_route (resource)
    //    msg: ptr[in, msghdr_netlink[netlink_msg_route_sched_retired]] {
    //      msghdr_netlink[netlink_msg_route_sched_retired] {
    //        addr: nil
    //        addrlen: len = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //        vec: ptr[in, iovec[in, netlink_msg_route_sched_retired]] {
    //          iovec[in, netlink_msg_route_sched_retired] {
    //            addr: ptr[in, netlink_msg_route_sched_retired] {
    //              union netlink_msg_route_sched_retired {
    //                newqdisc: netlink_msg_t[const[RTM_NEWQDISC, int16],
    //                tcmsg[AF_UNSPEC], rtm_tca_policy_retired] {
    //                  len: len = 0x0 (4 bytes)
    //                  type: const = 0x24 (2 bytes)
    //                  flags: netlink_msg_flags = 0x0 (2 bytes)
    //                  seq: int32 = 0x0 (4 bytes)
    //                  pid: int32 = 0x0 (4 bytes)
    //                  payload: tcmsg[AF_UNSPEC] {
    //                    family: const = 0x0 (1 bytes)
    //                    tcm__pad1: const = 0x0 (1 bytes)
    //                    tcm__pad2: const = 0x0 (2 bytes)
    //                    ifindex: ifindex (resource)
    //                    tcm_handle: tcm_handle {
    //                      minor: tcm_handle_offsets = 0x0 (2 bytes)
    //                      major: tcm_handle_offsets = 0x0 (2 bytes)
    //                    }
    //                    tcm_parent: tcm_handle {
    //                      minor: tcm_handle_offsets = 0x0 (2 bytes)
    //                      major: tcm_handle_offsets = 0x0 (2 bytes)
    //                    }
    //                    tcm_info: tcm_handle {
    //                      minor: tcm_handle_offsets = 0x0 (2 bytes)
    //                      major: tcm_handle_offsets = 0x0 (2 bytes)
    //                    }
    //                  }
    //                  attrs: array[rtm_tca_policy_retired] {
    //                  }
    //                }
    //              }
    //            }
    //            len: len = 0xe078 (8 bytes)
    //          }
    //        }
    //        vlen: const = 0x1 (8 bytes)
    //        ctrl: const = 0x0 (8 bytes)
    //        ctrllen: const = 0x0 (8 bytes)
    //        f: send_flags = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //      }
    //    }
    //    f: send_flags = 0x0 (8 bytes)
    //  ]
    *(uint64_t*)0x2000000002c0 = 0;
    *(uint32_t*)0x2000000002c8 = 0;
    *(uint64_t*)0x2000000002d0 = 0x200000000280;
    *(uint64_t*)0x200000000280 = 0x200000012100;
    *(uint32_t*)0x200000012100 = 0;
    *(uint16_t*)0x200000012104 = 0x24;
    *(uint16_t*)0x200000012106 = 0;
    *(uint32_t*)0x200000012108 = 0;
    *(uint32_t*)0x20000001210c = 0;
    *(uint8_t*)0x200000012110 = 0;
    *(uint8_t*)0x200000012111 = 0;
    *(uint16_t*)0x200000012112 = 0;
    *(uint32_t*)0x200000012114 = 0;
    *(uint16_t*)0x200000012118 = 0;
    *(uint16_t*)0x20000001211a = 0;
    *(uint16_t*)0x20000001211c = 0;
    *(uint16_t*)0x20000001211e = 0;
    *(uint16_t*)0x200000012120 = 0;
    *(uint16_t*)0x200000012122 = 0;
    *(uint64_t*)0x200000000288 = 0xe078;
    *(uint64_t*)0x2000000002d8 = 1;
    *(uint64_t*)0x2000000002e0 = 0;
    *(uint64_t*)0x2000000002e8 = 0;
    *(uint32_t*)0x2000000002f0 = 0;
    syscall(__NR_sendmsg, /*fd=*/r[1], /*msg=*/0x2000000002c0ul, /*f=*/0ul);
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
          /*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=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  loop();
  return 0;
}