// https://syzkaller.appspot.com/bug?id=00fadf9a6326e13098672b601d57f644cae380e9
// 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[3] = {0xffffffffffffffff, 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*)0x200000c0,
         "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*)0x200000e0 = 0xe;
  *(uint32_t*)0x200000e4 = 4;
  *(uint32_t*)0x200000e8 = 0x400;
  *(uint32_t*)0x200000ec = 0xd0;
  *(uint32_t*)0x200000f0 = 0x1f8;
  *(uint32_t*)0x200000f4 = 0x1f8;
  *(uint32_t*)0x200000f8 = 0;
  *(uint32_t*)0x200000fc = 0xd0;
  *(uint32_t*)0x20000100 = 0x2c0;
  *(uint32_t*)0x20000104 = 0x330;
  *(uint32_t*)0x20000108 = 0x330;
  *(uint32_t*)0x2000010c = 0x330;
  *(uint32_t*)0x20000110 = 0x2c0;
  *(uint32_t*)0x20000114 = 4;
  *(uint64_t*)0x20000118 = 0;
  memset((void*)0x20000120, 0, 136);
  *(uint32_t*)0x200001a8 = 0;
  *(uint16_t*)0x200001ac = 0xa8;
  *(uint16_t*)0x200001ae = 0x108;
  *(uint32_t*)0x200001b0 = 0;
  *(uint64_t*)0x200001b8 = 0;
  *(uint64_t*)0x200001c0 = 0;
  *(uint16_t*)0x200001c8 = 0x60;
  memcpy((void*)0x200001ca,
         "HMARK\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*)0x200001e7 = 0;
  *(uint32_t*)0x200001e8 = htobe32(-1);
  *(uint32_t*)0x200001f8 = htobe32(0);
  *(uint32_t*)0x200001fc = htobe32(0);
  *(uint32_t*)0x20000200 = htobe32(0);
  *(uint32_t*)0x20000204 = htobe32(0);
  *(uint16_t*)0x20000208 = htobe16(0);
  *(uint16_t*)0x2000020a = htobe16(0);
  *(uint16_t*)0x2000020c = htobe16(0);
  *(uint16_t*)0x2000020e = htobe16(0);
  *(uint32_t*)0x20000210 = 0;
  *(uint16_t*)0x20000214 = 0;
  *(uint32_t*)0x20000218 = 0;
  *(uint32_t*)0x2000021c = 4;
  *(uint32_t*)0x20000220 = 0;
  *(uint8_t*)0x20000228 = 0xfe;
  *(uint8_t*)0x20000229 = 0x88;
  memset((void*)0x2000022a, 0, 12);
  *(uint8_t*)0x20000236 = 0;
  *(uint8_t*)0x20000237 = 1;
  *(uint8_t*)0x20000238 = -1;
  *(uint8_t*)0x20000239 = 2;
  memset((void*)0x2000023a, 0, 13);
  *(uint8_t*)0x20000247 = 1;
  *(uint32_t*)0x20000248 = htobe32(0);
  *(uint32_t*)0x2000024c = htobe32(0);
  *(uint32_t*)0x20000250 = htobe32(0);
  *(uint32_t*)0x20000254 = htobe32(0);
  *(uint32_t*)0x20000258 = htobe32(0);
  *(uint32_t*)0x2000025c = htobe32(0);
  *(uint32_t*)0x20000260 = htobe32(0);
  *(uint32_t*)0x20000264 = htobe32(0);
  memcpy((void*)0x20000268, "vlan0\000\000\000\000\000\000\000\000\000\000\000",
         16);
  memcpy((void*)0x20000278, "vlan1\000\000\000\000\000\000\000\000\000\000\000",
         16);
  *(uint8_t*)0x20000288 = 0;
  *(uint8_t*)0x20000298 = 0;
  *(uint16_t*)0x200002a8 = 0;
  *(uint8_t*)0x200002aa = 0;
  *(uint8_t*)0x200002ab = 0;
  *(uint8_t*)0x200002ac = 0;
  *(uint32_t*)0x200002b0 = 0;
  *(uint16_t*)0x200002b4 = 0xa8;
  *(uint16_t*)0x200002b6 = 0xf0;
  *(uint32_t*)0x200002b8 = 0;
  *(uint64_t*)0x200002c0 = 0;
  *(uint64_t*)0x200002c8 = 0;
  *(uint16_t*)0x200002d0 = 0x48;
  memcpy((void*)0x200002d2,
         "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*)0x200002ef = 1;
  *(uint8_t*)0x200002f0 = -1;
  *(uint8_t*)0x200002f1 = 2;
  memset((void*)0x200002f2, 0, 13);
  *(uint8_t*)0x200002ff = 1;
  memcpy((void*)0x20000300, "netdevsim0\000\000\000\000\000\000", 16);
  *(uint64_t*)0x20000310 = 0;
  *(uint64_t*)0x20000318 = htobe64(0);
  *(uint64_t*)0x20000320 = htobe64(1);
  *(uint8_t*)0x20000328 = 0xfe;
  *(uint8_t*)0x20000329 = 0x80;
  memset((void*)0x2000032a, 0, 13);
  *(uint8_t*)0x20000337 = 0;
  *(uint32_t*)0x20000338 = htobe32(0);
  *(uint32_t*)0x2000033c = htobe32(0);
  *(uint32_t*)0x20000340 = htobe32(0);
  *(uint32_t*)0x20000344 = htobe32(0);
  *(uint32_t*)0x20000348 = htobe32(0);
  *(uint32_t*)0x2000034c = htobe32(0);
  *(uint32_t*)0x20000350 = htobe32(0);
  *(uint32_t*)0x20000354 = htobe32(0);
  memcpy((void*)0x20000358, "vlan1\000\000\000\000\000\000\000\000\000\000\000",
         16);
  memcpy((void*)0x20000368, "ipvlan0\000\000\000\000\000\000\000\000\000", 16);
  *(uint8_t*)0x20000378 = 0;
  *(uint8_t*)0x20000388 = 0;
  *(uint16_t*)0x20000398 = 0;
  *(uint8_t*)0x2000039a = 0;
  *(uint8_t*)0x2000039b = 0;
  *(uint8_t*)0x2000039c = 0;
  *(uint32_t*)0x200003a0 = 0;
  *(uint16_t*)0x200003a4 = 0x110;
  *(uint16_t*)0x200003a6 = 0x138;
  *(uint32_t*)0x200003a8 = 0;
  *(uint64_t*)0x200003b0 = 0;
  *(uint64_t*)0x200003b8 = 0;
  *(uint16_t*)0x200003c0 = 0x68;
  memcpy((void*)0x200003c2,
         "iprange\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*)0x200003df = 1;
  *(uint8_t*)0x200003e0 = 0xfe;
  *(uint8_t*)0x200003e1 = 0x80;
  memset((void*)0x200003e2, 0, 13);
  *(uint8_t*)0x200003ef = 0xaa;
  *(uint8_t*)0x200003f0 = 0xfe;
  *(uint8_t*)0x200003f1 = 0x80;
  memset((void*)0x200003f2, 0, 13);
  *(uint8_t*)0x200003ff = 0xbb;
  *(uint8_t*)0x20000400 = 0xfe;
  *(uint8_t*)0x20000401 = 0x80;
  memset((void*)0x20000402, 0, 13);
  *(uint8_t*)0x2000040f = 0;
  *(uint64_t*)0x20000410 = htobe64(0);
  *(uint64_t*)0x20000418 = htobe64(1);
  *(uint8_t*)0x20000420 = 2;
  *(uint16_t*)0x20000428 = 0x28;
  memcpy((void*)0x2000042a,
         "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*)0x20000447 = 0;
  *(uint32_t*)0x20000448 = 0;
  memset((void*)0x20000450, 0, 136);
  *(uint32_t*)0x200004d8 = 0;
  *(uint16_t*)0x200004dc = 0xa8;
  *(uint16_t*)0x200004de = 0xd0;
  *(uint32_t*)0x200004e0 = 0;
  *(uint64_t*)0x200004e8 = 0;
  *(uint64_t*)0x200004f0 = 0;
  *(uint16_t*)0x200004f8 = 0x28;
  memset((void*)0x200004fa, 0, 29);
  *(uint8_t*)0x20000517 = 0;
  *(uint32_t*)0x20000518 = 0xfffffffe;
  syscall(__NR_setsockopt, r[0], 0x29, 0x40, 0x200000c0ul, 0x460ul);
  res = syscall(__NR_socket, 0x23ul, 5ul, 2);
  if (res != -1)
    r[1] = res;
  *(uint32_t*)0x20000040 = 1;
  syscall(__NR_setsockopt, r[1], 0x113, 1, 0x20000040ul, 4ul);
  res = syscall(__NR_socket, 0x10ul, 3ul, 0xc);
  if (res != -1)
    r[2] = res;
  *(uint64_t*)0x20000440 = 0;
  *(uint32_t*)0x20000448 = 0;
  *(uint64_t*)0x20000450 = 0x20000400;
  *(uint64_t*)0x20000400 = 0x20000380;
  *(uint32_t*)0x20000380 = 0x2c;
  *(uint8_t*)0x20000384 = 0;
  *(uint8_t*)0x20000385 = 0xb;
  *(uint16_t*)0x20000386 = 0x101;
  *(uint32_t*)0x20000388 = 0;
  *(uint32_t*)0x2000038c = 0;
  *(uint8_t*)0x20000390 = 0xa;
  *(uint8_t*)0x20000391 = 0;
  *(uint16_t*)0x20000392 = htobe16(0);
  *(uint16_t*)0x20000394 = 8;
  *(uint16_t*)0x20000396 = 1;
  memcpy((void*)0x20000398, "udp\000", 4);
  *(uint16_t*)0x2000039c = 8;
  STORE_BY_BITMASK(uint16_t, , 0x2000039e, 2, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x2000039f, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x2000039f, 0, 7, 1);
  *(uint32_t*)0x200003a0 = htobe32(0);
  *(uint16_t*)0x200003a4 = 8;
  STORE_BY_BITMASK(uint16_t, , 0x200003a6, 3, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200003a7, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200003a7, 0, 7, 1);
  *(uint32_t*)0x200003a8 = htobe32(0);
  *(uint64_t*)0x20000408 = 0x2c;
  *(uint64_t*)0x20000458 = 1;
  *(uint64_t*)0x20000460 = 0;
  *(uint64_t*)0x20000468 = 0;
  *(uint32_t*)0x20000470 = 0;
  syscall(__NR_sendmsg, r[2], 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;
}