// 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, 0xaul, 1ul, 0);
  if (res != -1)
    r[0] = res;
  memcpy((void*)0x20000140,
         "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*)0x20000160 = 0xe;
  *(uint32_t*)0x20000164 = 4;
  *(uint32_t*)0x20000168 = 0x4d0;
  *(uint32_t*)0x2000016c = 0xd0;
  *(uint32_t*)0x20000170 = 0x1e0;
  *(uint32_t*)0x20000174 = 0xf0;
  *(uint32_t*)0x20000178 = 0;
  *(uint32_t*)0x2000017c = 0xd0;
  *(uint32_t*)0x20000180 = 0x2c0;
  *(uint32_t*)0x20000184 = 0x400;
  *(uint32_t*)0x20000188 = 0x400;
  *(uint32_t*)0x2000018c = 0x400;
  *(uint32_t*)0x20000190 = 0x2c0;
  *(uint32_t*)0x20000194 = 4;
  *(uint64_t*)0x20000198 = 0;
  memset((void*)0x200001a0, 0, 136);
  *(uint32_t*)0x20000228 = 0;
  *(uint16_t*)0x2000022c = 0xa8;
  *(uint16_t*)0x2000022e = 0xf0;
  *(uint32_t*)0x20000230 = 0;
  *(uint64_t*)0x20000238 = 0;
  *(uint64_t*)0x20000240 = 0;
  *(uint16_t*)0x20000248 = 0x48;
  memcpy((void*)0x2000024a,
         "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*)0x20000267 = 1;
  *(uint32_t*)0x20000268 = htobe32(0xe0000002);
  memcpy((void*)0x20000278, "bridge_slave_0\000\000", 16);
  *(uint64_t*)0x20000288 = 0;
  *(uint8_t*)0x20000290 = 0xfe;
  *(uint8_t*)0x20000291 = 0x80;
  memset((void*)0x20000292, 0, 13);
  *(uint8_t*)0x2000029f = 0xbb;
  memset((void*)0x200002a0, 0, 10);
  memset((void*)0x200002aa, 255, 2);
  *(uint8_t*)0x200002ac = 0xac;
  *(uint8_t*)0x200002ad = 0x14;
  *(uint8_t*)0x200002ae = 0x14;
  *(uint8_t*)0x200002af = 0xbb;
  *(uint32_t*)0x200002b0 = htobe32(0);
  *(uint32_t*)0x200002b4 = htobe32(0);
  *(uint32_t*)0x200002b8 = htobe32(0);
  *(uint32_t*)0x200002bc = htobe32(0);
  *(uint32_t*)0x200002c0 = htobe32(0);
  *(uint32_t*)0x200002c4 = htobe32(0);
  *(uint32_t*)0x200002c8 = htobe32(0);
  *(uint32_t*)0x200002cc = htobe32(0);
  memcpy((void*)0x200002d0, "wlan0\000\000\000\000\000\000\000\000\000\000\000",
         16);
  memcpy((void*)0x200002e0, "veth1_virt_wifi\000", 16);
  *(uint8_t*)0x200002f0 = 0;
  *(uint8_t*)0x20000300 = 0;
  *(uint16_t*)0x20000310 = 0;
  *(uint8_t*)0x20000312 = 0;
  *(uint8_t*)0x20000313 = 0;
  *(uint8_t*)0x20000314 = 0;
  *(uint32_t*)0x20000318 = 0;
  *(uint16_t*)0x2000031c = 0xa8;
  *(uint16_t*)0x2000031e = 0xf0;
  *(uint32_t*)0x20000320 = 0;
  *(uint64_t*)0x20000328 = 0;
  *(uint64_t*)0x20000330 = 0;
  *(uint16_t*)0x20000338 = 0x48;
  memcpy((void*)0x2000033a,
         "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*)0x20000357 = 1;
  *(uint8_t*)0x20000358 = 0xfe;
  *(uint8_t*)0x20000359 = 0x80;
  memset((void*)0x2000035a, 0, 13);
  *(uint8_t*)0x20000367 = 0xaa;
  memcpy((void*)0x20000368, "vlan1\000\000\000\000\000\000\000\000\000\000\000",
         16);
  *(uint64_t*)0x20000378 = 0;
  memset((void*)0x20000380, 0, 136);
  *(uint32_t*)0x20000408 = 0;
  *(uint16_t*)0x2000040c = 0x1f8;
  *(uint16_t*)0x2000040e = 0x220;
  *(uint32_t*)0x20000410 = 0;
  *(uint64_t*)0x20000418 = 0;
  *(uint64_t*)0x20000420 = 0;
  *(uint16_t*)0x20000428 = 0x150;
  memcpy((void*)0x2000042a,
         "hashlimit\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000",
         29);
  *(uint8_t*)0x20000447 = 2;
  memcpy((void*)0x20000448,
         "caif0\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\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\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\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\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000\000\000\000",
         255);
  *(uint64_t*)0x20000548 = 5;
  *(uint64_t*)0x20000550 = 0;
  *(uint32_t*)0x20000558 = 0x2b;
  *(uint32_t*)0x2000055c = 0;
  *(uint32_t*)0x20000560 = 0;
  *(uint32_t*)0x20000564 = 0xfffffffd;
  *(uint32_t*)0x20000568 = 2;
  *(uint8_t*)0x2000056c = 0;
  *(uint8_t*)0x2000056d = 0;
  *(uint64_t*)0x20000570 = 0;
  *(uint16_t*)0x20000578 = 0x28;
  memcpy((void*)0x2000057a,
         "MARK\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*)0x20000597 = 2;
  *(uint32_t*)0x20000598 = 0;
  *(uint32_t*)0x2000059c = 0;
  memset((void*)0x200005a0, 0, 136);
  *(uint32_t*)0x20000628 = 0;
  *(uint16_t*)0x2000062c = 0xa8;
  *(uint16_t*)0x2000062e = 0xd0;
  *(uint32_t*)0x20000630 = 0;
  *(uint64_t*)0x20000638 = 0;
  *(uint64_t*)0x20000640 = 0;
  *(uint16_t*)0x20000648 = 0x28;
  memset((void*)0x2000064a, 0, 29);
  *(uint8_t*)0x20000667 = 0;
  *(uint32_t*)0x20000668 = 0xfffffffe;
  syscall(__NR_setsockopt, r[0], 0x29, 0x40, 0x20000140ul, 0x530ul);
  syscall(__NR_unshare, 0x6c060000ul);
  res = syscall(__NR_socket, 0x10ul, 3ul, 0xc);
  if (res != -1)
    r[1] = res;
  *(uint64_t*)0x20000340 = 0;
  *(uint32_t*)0x20000348 = 0;
  *(uint64_t*)0x20000350 = 0x20000300;
  *(uint64_t*)0x20000300 = 0x20000240;
  *(uint32_t*)0x20000240 = 0x3c;
  *(uint8_t*)0x20000244 = 0;
  *(uint8_t*)0x20000245 = 0xb;
  *(uint16_t*)0x20000246 = 3;
  *(uint32_t*)0x20000248 = 0;
  *(uint32_t*)0x2000024c = 0;
  *(uint8_t*)0x20000250 = 0xa;
  *(uint8_t*)0x20000251 = 0;
  *(uint16_t*)0x20000252 = htobe16(2);
  *(uint16_t*)0x20000254 = 8;
  STORE_BY_BITMASK(uint16_t, , 0x20000256, 3, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x20000257, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x20000257, 0, 7, 1);
  *(uint32_t*)0x20000258 = htobe32(0);
  *(uint16_t*)0x2000025c = 8;
  STORE_BY_BITMASK(uint16_t, , 0x2000025e, 3, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x2000025f, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x2000025f, 0, 7, 1);
  *(uint32_t*)0x20000260 = htobe32(0);
  *(uint16_t*)0x20000264 = 8;
  STORE_BY_BITMASK(uint16_t, , 0x20000266, 2, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x20000267, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x20000267, 0, 7, 1);
  *(uint32_t*)0x20000268 = htobe32(3);
  *(uint16_t*)0x2000026c = 8;
  *(uint16_t*)0x2000026e = 1;
  memcpy((void*)0x20000270, "+\\:\000", 4);
  *(uint16_t*)0x20000274 = 8;
  STORE_BY_BITMASK(uint16_t, , 0x20000276, 3, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x20000277, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x20000277, 0, 7, 1);
  *(uint32_t*)0x20000278 = htobe32(1);
  *(uint64_t*)0x20000308 = 0x3c;
  *(uint64_t*)0x20000358 = 1;
  *(uint64_t*)0x20000360 = 0;
  *(uint64_t*)0x20000368 = 0;
  *(uint32_t*)0x20000370 = 0x4810;
  syscall(__NR_sendmsg, r[1], 0x20000340ul, 0x4008880ul);
}
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;
}