// https://syzkaller.appspot.com/bug?id=91f5af26ff952be125114ade4cb7c629014c8372
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/prctl.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.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 bool write_file(const char* file, const char* what, ...)
{
  char buf[1024];
  va_list args;
  va_start(args, what);
  vsnprintf(buf, sizeof(buf), what, args);
  va_end(args);
  buf[sizeof(buf) - 1] = 0;
  int len = strlen(buf);
  int fd = open(file, O_WRONLY | O_CLOEXEC);
  if (fd == -1)
    return false;
  if (write(fd, buf, len) != len) {
    int err = errno;
    close(fd);
    errno = err;
    return false;
  }
  close(fd);
  return true;
}

static void kill_and_wait(int pid, int* status)
{
  kill(-pid, SIGKILL);
  kill(pid, SIGKILL);
  for (int i = 0; i < 100; i++) {
    if (waitpid(-1, status, WNOHANG | __WALL) == pid)
      return;
    usleep(1000);
  }
  DIR* dir = opendir("/sys/fs/fuse/connections");
  if (dir) {
    for (;;) {
      struct dirent* ent = readdir(dir);
      if (!ent)
        break;
      if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0)
        continue;
      char abort[300];
      snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort",
               ent->d_name);
      int fd = open(abort, O_WRONLY);
      if (fd == -1) {
        continue;
      }
      if (write(fd, abort, 1) < 0) {
      }
      close(fd);
    }
    closedir(dir);
  } else {
  }
  while (waitpid(-1, status, __WALL) != pid) {
  }
}

static void setup_test()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  write_file("/proc/self/oom_score_adj", "1000");
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter = 0;
  for (;; iter++) {
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      setup_test();
      execute_one();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      sleep_ms(10);
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/6);
  if (res != -1)
    r[0] = res;
  *(uint64_t*)0x200035c0 = 0;
  *(uint32_t*)0x200035c8 = 0;
  *(uint64_t*)0x200035d0 = 0x20003580;
  *(uint64_t*)0x20003580 = 0x20000000;
  *(uint32_t*)0x20000000 = 0x15c;
  *(uint16_t*)0x20000004 = 0x10;
  *(uint16_t*)0x20000006 = 1;
  *(uint32_t*)0x20000008 = 0;
  *(uint32_t*)0x2000000c = 0;
  *(uint32_t*)0x20000010 = htobe32(0);
  *(uint8_t*)0x20000020 = 0xfe;
  *(uint8_t*)0x20000021 = 0x80;
  memset((void*)0x20000022, 0, 13);
  *(uint8_t*)0x2000002f = 0xbb;
  *(uint16_t*)0x20000030 = htobe16(0);
  *(uint16_t*)0x20000032 = htobe16(0);
  *(uint16_t*)0x20000034 = htobe16(0);
  *(uint16_t*)0x20000036 = htobe16(0);
  *(uint16_t*)0x20000038 = 0;
  *(uint8_t*)0x2000003a = 0;
  *(uint8_t*)0x2000003b = 0x80;
  *(uint8_t*)0x2000003c = 0;
  *(uint32_t*)0x20000040 = 0;
  *(uint32_t*)0x20000044 = 0;
  *(uint8_t*)0x20000048 = 0xac;
  *(uint8_t*)0x20000049 = 0x14;
  *(uint8_t*)0x2000004a = 0x14;
  *(uint8_t*)0x2000004b = 0;
  *(uint32_t*)0x20000058 = htobe32(0);
  *(uint8_t*)0x2000005c = 0x6c;
  *(uint64_t*)0x20000060 = htobe64(0);
  *(uint64_t*)0x20000068 = htobe64(1);
  *(uint64_t*)0x20000070 = 0;
  *(uint64_t*)0x20000078 = 0;
  *(uint64_t*)0x20000080 = 0;
  *(uint64_t*)0x20000088 = 0;
  *(uint64_t*)0x20000090 = 0;
  *(uint64_t*)0x20000098 = 0;
  *(uint64_t*)0x200000a0 = 0;
  *(uint64_t*)0x200000a8 = 0;
  *(uint64_t*)0x200000b0 = 0;
  *(uint64_t*)0x200000b8 = 0;
  *(uint64_t*)0x200000c0 = 0;
  *(uint64_t*)0x200000c8 = 0;
  *(uint32_t*)0x200000d0 = 0;
  *(uint32_t*)0x200000d4 = 0;
  *(uint32_t*)0x200000d8 = 0;
  *(uint32_t*)0x200000dc = 0;
  *(uint32_t*)0x200000e0 = 0;
  *(uint16_t*)0x200000e4 = 2;
  *(uint8_t*)0x200000e6 = 0;
  *(uint8_t*)0x200000e7 = 0;
  *(uint8_t*)0x200000e8 = 0;
  *(uint16_t*)0x200000f0 = 0x48;
  *(uint16_t*)0x200000f2 = 3;
  memcpy((void*)0x200000f4,
         "deflate\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"
         "\000\000\000\000\000\000\000\000",
         64);
  *(uint32_t*)0x20000134 = 0;
  *(uint16_t*)0x20000138 = 0x24;
  *(uint16_t*)0x2000013a = 9;
  *(uint64_t*)0x2000013c = 0xff;
  *(uint64_t*)0x20000144 = 2;
  *(uint64_t*)0x2000014c = 0x80;
  *(uint64_t*)0x20000154 = 5;
  *(uint64_t*)0x20003588 = 0x15c;
  *(uint64_t*)0x200035d8 = 1;
  *(uint64_t*)0x200035e0 = 0;
  *(uint64_t*)0x200035e8 = 0;
  *(uint32_t*)0x200035f0 = 0;
  syscall(__NR_sendmsg, /*fd=*/r[0], /*msg=*/0x200035c0ul, /*f=*/0ul);
  res = syscall(__NR_socket, /*domain=*/0xaul, /*type=SOCK_RAW*/ 3ul,
                /*proto=*/0x88);
  if (res != -1)
    r[1] = res;
  *(uint8_t*)0x20000280 = 0xac;
  *(uint8_t*)0x20000281 = 0x14;
  *(uint8_t*)0x20000282 = 0x14;
  *(uint8_t*)0x20000283 = 0xaa;
  *(uint32_t*)0x20000290 = htobe32(0);
  *(uint16_t*)0x200002a0 = htobe16(0);
  *(uint16_t*)0x200002a2 = htobe16(0);
  *(uint16_t*)0x200002a4 = htobe16(0);
  *(uint16_t*)0x200002a6 = htobe16(0);
  *(uint16_t*)0x200002a8 = 2;
  *(uint8_t*)0x200002aa = 0;
  *(uint8_t*)0x200002ab = 0;
  *(uint8_t*)0x200002ac = 0;
  *(uint32_t*)0x200002b0 = 0;
  *(uint32_t*)0x200002b4 = 0;
  *(uint64_t*)0x200002b8 = 0;
  *(uint64_t*)0x200002c0 = 0;
  *(uint64_t*)0x200002c8 = 0;
  *(uint64_t*)0x200002d0 = 0;
  *(uint64_t*)0x200002d8 = 0;
  *(uint64_t*)0x200002e0 = 0;
  *(uint64_t*)0x200002e8 = 0;
  *(uint64_t*)0x200002f0 = 0;
  *(uint64_t*)0x200002f8 = 0;
  *(uint64_t*)0x20000300 = 0;
  *(uint64_t*)0x20000308 = 0;
  *(uint64_t*)0x20000310 = 0;
  *(uint32_t*)0x20000318 = 0;
  *(uint32_t*)0x2000031c = 0;
  *(uint8_t*)0x20000320 = 1;
  *(uint8_t*)0x20000321 = 0;
  *(uint8_t*)0x20000322 = 0;
  *(uint8_t*)0x20000323 = 0;
  *(uint32_t*)0x20000328 = htobe32(0);
  *(uint32_t*)0x20000338 = htobe32(0);
  *(uint8_t*)0x2000033c = 0x6c;
  *(uint16_t*)0x20000340 = 0;
  *(uint64_t*)0x20000344 = htobe64(0);
  *(uint64_t*)0x2000034c = htobe64(1);
  *(uint32_t*)0x20000354 = 0;
  *(uint8_t*)0x20000358 = 0;
  *(uint8_t*)0x20000359 = 0;
  *(uint8_t*)0x2000035a = 0;
  *(uint32_t*)0x2000035c = 0;
  *(uint32_t*)0x20000360 = 0;
  *(uint32_t*)0x20000364 = 0;
  syscall(__NR_setsockopt, /*fd=*/r[1], /*level=*/0x29, /*optname=*/0x23,
          /*optval=*/0x20000280ul, /*optlen=*/0xe8ul);
  *(uint16_t*)0x20000000 = 0xa;
  *(uint16_t*)0x20000002 = htobe16(0);
  *(uint32_t*)0x20000004 = htobe32(0);
  memset((void*)0x20000008, 0, 10);
  memset((void*)0x20000012, 255, 2);
  *(uint8_t*)0x20000014 = 0xac;
  *(uint8_t*)0x20000015 = 0x14;
  *(uint8_t*)0x20000016 = 0x14;
  *(uint8_t*)0x20000017 = 0;
  *(uint32_t*)0x20000018 = 0;
  syscall(__NR_connect, /*fd=*/r[1], /*addr=*/0x20000000ul, /*addrlen=*/0x1cul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  const char* reason;
  (void)reason;
  loop();
  return 0;
}