// https://syzkaller.appspot.com/bug?id=779a64ccaefd969d5d9bc72a7c4fe39598d53884
// 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;
}

#define BITMASK(bf_off, bf_len) (((1ull << (bf_len)) - 1) << (bf_off))
#define STORE_BY_BITMASK(type, htobe, addr, val, bf_off, bf_len)               \
  *(type*)(addr) =                                                             \
      htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) |           \
            (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len))))

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 (;;) {
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      sleep_ms(1);
      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;
  res = syscall(__NR_socket, 2ul, 3ul, 1);
  if (res != -1)
    r[0] = res;
  memcpy((void*)0x200005c0,
         "filter\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",
         32);
  *(uint32_t*)0x200005e0 = 0xe;
  *(uint32_t*)0x200005e4 = 4;
  *(uint32_t*)0x200005e8 = 0x2b8;
  *(uint32_t*)0x200005ec = 0;
  *(uint32_t*)0x200005f0 = 0x168;
  *(uint32_t*)0x200005f4 = 0x98;
  *(uint32_t*)0x200005f8 = 0x98;
  *(uint32_t*)0x200005fc = 0x1c0;
  *(uint32_t*)0x20000600 = 0x310;
  *(uint32_t*)0x20000604 = 0x220;
  *(uint32_t*)0x20000608 = 0x220;
  *(uint32_t*)0x2000060c = 0x220;
  *(uint32_t*)0x20000610 = 0x310;
  *(uint32_t*)0x20000614 = 4;
  *(uint64_t*)0x20000618 = 0;
  memset((void*)0x20000620, 0, 84);
  *(uint32_t*)0x20000674 = 0;
  *(uint16_t*)0x20000678 = 0x70;
  *(uint16_t*)0x2000067a = 0x98;
  *(uint32_t*)0x2000067c = 0;
  *(uint64_t*)0x20000680 = 0;
  *(uint64_t*)0x20000688 = 0;
  *(uint16_t*)0x20000690 = 0x28;
  memcpy((void*)0x20000692,
         "REJECT\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000",
         29);
  *(uint8_t*)0x200006af = 0;
  *(uint32_t*)0x200006b0 = 0;
  *(uint32_t*)0x200006b8 = htobe32(0x7f000001);
  *(uint32_t*)0x200006bc = htobe32(0x7f000001);
  *(uint32_t*)0x200006c0 = htobe32(0);
  *(uint32_t*)0x200006c4 = htobe32(0);
  memcpy((void*)0x200006c8, "veth1_to_bridge\000", 16);
  memcpy((void*)0x200006d8, "ip6gre0\000\000\000\000\000\000\000\000\000", 16);
  *(uint8_t*)0x200006e8 = 0;
  *(uint8_t*)0x200006f8 = 0;
  *(uint16_t*)0x20000708 = 0;
  *(uint8_t*)0x2000070a = 0;
  *(uint8_t*)0x2000070b = 0;
  *(uint32_t*)0x2000070c = 0;
  *(uint16_t*)0x20000710 = 0xa8;
  *(uint16_t*)0x20000712 = 0xd0;
  *(uint32_t*)0x20000714 = 0;
  *(uint64_t*)0x20000718 = 0;
  *(uint64_t*)0x20000720 = 0;
  *(uint16_t*)0x20000728 = 0x38;
  memcpy((void*)0x2000072a,
         "statistic\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000",
         29);
  *(uint8_t*)0x20000747 = 0;
  *(uint16_t*)0x20000748 = 0;
  *(uint16_t*)0x2000074a = 0;
  *(uint32_t*)0x2000074c = 0;
  *(uint32_t*)0x20000750 = 0;
  *(uint32_t*)0x20000754 = 0;
  *(uint64_t*)0x20000758 = 0;
  *(uint16_t*)0x20000760 = 0x28;
  memcpy((void*)0x20000762,
         "REJECT\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000",
         29);
  *(uint8_t*)0x2000077f = 0;
  *(uint32_t*)0x20000780 = 0;
  memset((void*)0x20000788, 0, 84);
  *(uint32_t*)0x200007dc = 0;
  *(uint16_t*)0x200007e0 = 0x70;
  *(uint16_t*)0x200007e2 = 0xb8;
  *(uint32_t*)0x200007e4 = 0;
  *(uint64_t*)0x200007e8 = 0;
  *(uint64_t*)0x200007f0 = 0;
  *(uint16_t*)0x200007f8 = 0x48;
  memcpy((void*)0x200007fa,
         "TEE\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",
         29);
  *(uint8_t*)0x20000817 = 1;
  *(uint8_t*)0x20000818 = 0xac;
  *(uint8_t*)0x20000819 = 0x14;
  *(uint8_t*)0x2000081a = 0x14;
  *(uint8_t*)0x2000081b = 0xbb;
  memcpy((void*)0x20000828, "wlan0\000\000\000\000\000\000\000\000\000\000\000",
         16);
  *(uint64_t*)0x20000838 = 0;
  memset((void*)0x20000840, 0, 84);
  *(uint32_t*)0x20000894 = 0;
  *(uint16_t*)0x20000898 = 0x70;
  *(uint16_t*)0x2000089a = 0x98;
  *(uint32_t*)0x2000089c = 0;
  *(uint64_t*)0x200008a0 = 0;
  *(uint64_t*)0x200008a8 = 0;
  *(uint16_t*)0x200008b0 = 0x28;
  memset((void*)0x200008b2, 0, 29);
  *(uint8_t*)0x200008cf = 0;
  *(uint32_t*)0x200008d0 = 0xfffffffe;
  syscall(__NR_setsockopt, r[0], 0, 0x40, 0x200005c0ul, 0x318ul);
  syscall(__NR_unshare, 0x60000000ul);
  res = syscall(__NR_socket, 0x10ul, 3ul, 0xc);
  if (res != -1)
    r[1] = res;
  *(uint64_t*)0x20000440 = 0;
  *(uint32_t*)0x20000448 = 0;
  *(uint64_t*)0x20000450 = 0x20000400;
  *(uint64_t*)0x20000400 = 0x20000300;
  *(uint32_t*)0x20000300 = 0x30;
  *(uint8_t*)0x20000304 = 0;
  *(uint8_t*)0x20000305 = 0xb;
  *(uint16_t*)0x20000306 = 0x201;
  *(uint32_t*)0x20000308 = 0;
  *(uint32_t*)0x2000030c = 0;
  *(uint8_t*)0x20000310 = 3;
  *(uint8_t*)0x20000311 = 0;
  *(uint16_t*)0x20000312 = htobe16(0);
  *(uint16_t*)0x20000314 = 0xc;
  *(uint16_t*)0x20000316 = 1;
  memcpy((void*)0x20000318, "&[%$\v@+\000", 8);
  *(uint16_t*)0x20000320 = 8;
  STORE_BY_BITMASK(uint16_t, , 0x20000322, 3, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x20000323, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x20000323, 0, 7, 1);
  *(uint32_t*)0x20000324 = htobe32(0);
  *(uint16_t*)0x20000328 = 8;
  STORE_BY_BITMASK(uint16_t, , 0x2000032a, 2, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x2000032b, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x2000032b, 0, 7, 1);
  *(uint32_t*)0x2000032c = htobe32(0);
  *(uint64_t*)0x20000408 = 0x30;
  *(uint64_t*)0x20000458 = 1;
  *(uint64_t*)0x20000460 = 0;
  *(uint64_t*)0x20000468 = 0;
  *(uint32_t*)0x20000470 = 0;
  syscall(__NR_sendmsg, r[1], 0x20000440ul, 0ul);
}
int main(void)
{
  syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  loop();
  return 0;
}