// https://syzkaller.appspot.com/bug?id=4cc2fb55688d9531f6302893f47f046b3e317ed5
// 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>

#ifndef __NR_bpf
#define __NR_bpf 321
#endif

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[6] = {0xffffffffffffffff, 0xffffffffffffffff, 0x0,
                 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0);
  if (res != -1)
    r[0] = res;
  res = syscall(__NR_socket, /*domain=*/0xaul, /*type=*/2ul, /*proto=*/0);
  if (res != -1)
    r[1] = res;
  memcpy((void*)0x20000040,
         "lo\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 16);
  res = syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0x8933, /*arg=*/0x20000040ul);
  if (res != -1)
    r[2] = *(uint32_t*)0x20000050;
  *(uint64_t*)0x200012c0 = 0;
  *(uint32_t*)0x200012c8 = 0;
  *(uint64_t*)0x200012d0 = 0x20000000;
  *(uint64_t*)0x20000000 = 0x20000280;
  *(uint32_t*)0x20000280 = 0x74;
  *(uint16_t*)0x20000284 = 0x24;
  *(uint16_t*)0x20000286 = 0x6541;
  *(uint32_t*)0x20000288 = 0;
  *(uint32_t*)0x2000028c = 0;
  *(uint8_t*)0x20000290 = 0;
  *(uint8_t*)0x20000291 = 0;
  *(uint16_t*)0x20000292 = 0;
  *(uint32_t*)0x20000294 = r[2];
  *(uint16_t*)0x20000298 = 0;
  *(uint16_t*)0x2000029a = 0;
  *(uint16_t*)0x2000029c = -1;
  *(uint16_t*)0x2000029e = -1;
  *(uint16_t*)0x200002a0 = 0;
  *(uint16_t*)0x200002a2 = 0;
  *(uint16_t*)0x200002a4 = 0xa;
  *(uint16_t*)0x200002a6 = 1;
  memcpy((void*)0x200002a8, "netem\000", 6);
  *(uint16_t*)0x200002b0 = 0x44;
  *(uint16_t*)0x200002b2 = 2;
  *(uint32_t*)0x200002b4 = 0;
  *(uint32_t*)0x200002b8 = 0x200000;
  *(uint32_t*)0x200002bc = 0;
  *(uint32_t*)0x200002c0 = 0;
  *(uint32_t*)0x200002c4 = 0xfffffffd;
  *(uint32_t*)0x200002c8 = 0;
  *(uint16_t*)0x200002cc = 0x1c;
  STORE_BY_BITMASK(uint16_t, , 0x200002ce, 5, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200002cf, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200002cf, 1, 7, 1);
  *(uint16_t*)0x200002d0 = 0x18;
  *(uint16_t*)0x200002d2 = 1;
  *(uint32_t*)0x200002d4 = 0x7fffffff;
  *(uint32_t*)0x200002d8 = 0;
  *(uint32_t*)0x200002dc = 0xfffffffd;
  *(uint32_t*)0x200002e0 = 0;
  *(uint32_t*)0x200002e4 = 0;
  *(uint16_t*)0x200002e8 = 0xc;
  *(uint16_t*)0x200002ea = 0xa;
  *(uint64_t*)0x200002ec = 6;
  *(uint64_t*)0x20000008 = 0x74;
  *(uint64_t*)0x200012d8 = 1;
  *(uint64_t*)0x200012e0 = 0;
  *(uint64_t*)0x200012e8 = 0;
  *(uint32_t*)0x200012f0 = 0;
  syscall(__NR_sendmsg, /*fd=*/r[0], /*msg=*/0x200012c0ul, /*f=*/0ul);
  res = syscall(__NR_socket, /*domain=*/2ul, /*type=*/1ul, /*proto=*/0);
  if (res != -1)
    r[3] = res;
  *(uint16_t*)0x20000000 = 2;
  *(uint16_t*)0x20000002 = htobe16(0x4e20);
  *(uint32_t*)0x20000004 = htobe32(0xe0000001);
  syscall(__NR_bind, /*fd=*/r[3], /*addr=*/0x20000000ul, /*addrlen=*/0x10ul);
  *(uint16_t*)0x200018c0 = 2;
  *(uint16_t*)0x200018c2 = htobe16(0x4e20);
  *(uint32_t*)0x200018c4 = htobe32(0);
  syscall(__NR_sendto, /*fd=*/r[3], /*buf=*/0ul, /*len=*/0ul,
          /*f=MSG_FASTOPEN|MSG_EOR|MSG_DONTROUTE|0x20000*/ 0x20020084ul,
          /*addr=*/0x200018c0ul, /*addrlen=*/0x10ul);
  *(uint32_t*)0x2000e000 = 0xe;
  *(uint32_t*)0x2000e004 = 4;
  *(uint64_t*)0x2000e008 = 0x20000b80;
  memcpy(
      (void*)0x20000b80,
      "\xb4\x05\x00\x00\x20\x00\x80\x00\x61\x10\x60\x00\x00\x00\x00\x00\xc6\x00"
      "\x00\x00\x00\x00\x00\x02\x95\x00\x00\x00\x00\x00\x00\x00\x9f\x33\xef\x60"
      "\x91\x6e\x6e\x89\x3f\x1e\xeb\x0b\xe2\x56\x6c\xd0\x72\x30\x43\xc4\x7c\x89"
      "\x6c\xe0\xbc\xe6\x6a\x24\x5a\xd9\x9b\x81\x7f\xd9\x8c\xd8\x24\x49\x89\x49"
      "\x71\x4f\xfa\xac\x8a\x6f\x77\xef\x26\xdc\xca\x55\x82\x05\x4d\x54\xd5\x3c"
      "\xd2\xb6\xdb\x71\x4e\x4b\x94\xbd\xae\x21\x4f\xa6\x8a\x05\x57\xeb\x2c\x5c"
      "\xa6\x83\xa4\xb6\xfc\x89\x39\x8f\x2b\x90\x00\xf2\x24\x89\x10\x60\x01\x7c"
      "\xfa\x6f\xa2\x6f\xa7\xa3\x47\x01\x00\x8c\x61\x89\x7d\x4a\x61\x48\xa1\xc1"
      "\x14\x28\x60\x7c\x40\xde\x60\xbe\xac\x67\x1e\x8e\x8f\xde\xcb\x03\x58\x8a"
      "\xa6\x23\xfa\x71\xf8\x71\xab\x5c\x2f\xf8\x8a\xfc\x60\x02\x08\x4e\x5b\x52"
      "\x71\x08\x00\xe8\x35\xcf\x0d\x78\xe4\x5f\x70\x98\x38\x26\xfb\x85\x79\xc1"
      "\xfb\x01\xd2\xc5\x55\x3d\x2c\xcb\x5f\xc5\xb5\x1f\xe6\xb1\x74\xbe\xd9\x90"
      "\x7d\xcf\xf4\x14\xed\x55\xb0\xc2\x0c\xdb\xe7\x00\x9a\x6f\xe7\xcc\x78\x76"
      "\x2f\x1d\x4d\xcd\xbc\xa6\x49\x20\xdb\x9a\x50\xf8\x6c\x21\x63\x2f\xd3\x0b"
      "\xf0\x51\x21\x43\x8b\xb7\x4e\x46\x70\xab\x5d\xfe\x44\x7a\x4b\xd3\x44\xe0"
      "\xbd\x74\xff\x05\xd3\x7e\xf6\x8e\x3b\x9d\xb8\x63\xc7\x58\xff\xff\xff\xff"
      "\xb4\x26\xe1\x23\x0b\xc1\xcd\x4c\x02\xc4\xc2\xe6\xd1\x7d\xc5\xc2\xed\xf3"
      "\x32\xa6\x2f\x5f\xe6\x8f\xbb\xbb\xfc\xfd\x78\xa9\xf3\xfd\xc1\xf5\x0c\x44"
      "\x5e\x3f\x30\xe7\x03\xcf\x05\xb9\x0f\xbf\x94\x0e\x66\x52\xd3\x77\x47\x4e"
      "\xd5\xf8\x16\xf6\x6a\xc3\x02\x74\x60\xae\x99\x1e\x7f\x83\x4d\xd7\xa7\xfc"
      "\x2a\x70\x03\xd1\xa6\xcf\x54\x78\x53\x35\x84\x96\x1c\x32\x9f\xcf\x4f\xed"
      "\x5c\x94\x55\x64\x0d\xcd\x28\x27\x3d\xc9\x75\x3c\xc9\x79\x11\x3f\x29\x15"
      "\xa3\x03\x9c\x3c\xa6\x0e\xc5\x3b\xb1\x13\x0c\x2d\x27\xfe\xd7\xd6\x7c\x44"
      "\x0e\x23\xd1\x30\xe5\x1e\xea\x1e\x08\x5b\xeb\xab\xe7\x05\x9d\xe9\xcb\xfc"
      "\x51\x17\x7c\xce\x5e\xf2\x65\xc9\x2b\x79\x57\xa3\x34\xff\x7b\xe2\xca\x86"
      "\x7f\xd9\x42\x86\xe0\x16\xfe\xbf\xdb\x58\x27\xef\xc7\xa6\xef\xb0\x1d\x66"
      "\xa3\x96\xf8\x4c\x1c\xa7\x5d\xaa\x4e\xad\x09\x96\x94\xed\x03\xd4\x49\xb1"
      "\x85\xcc\x83\x6b\xab\x1a\x41\xa6\x1b\xd6\xf0\x3a\x54\xfa\xfc\xee\x55\x4b"
      "\xbb\x52\xad\xf8\xf1\xd7\xed\xe9\xf9\xa7\x11\x25\x6f\xb4\x5e\x6c\x3d\x12"
      "\xff\x56\x0e\xe6\x9d\x68\x73\x3d\x52\x2d\x9b\xbe\xcf\x52\x39\x6f\x15\x97"
      "\x63\x81\xc2\x70\x15\x40\x37\x78\x13\x98\x08\x14\x2b\x48\xce\xd1\x45\xca"
      "\x8a\x6d\xa5\xf3\x22\xd4\x13\xd0\x9c\xc3\x8b\x83\x2f\xa0\x5d\xd3\xc7\x99"
      "\x04\x25\x88\xf9\xee\xa6\xf4\x43\xba\xa7\x59\x25\x7a\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\xbe\xd1\xda\xd2\x28\xe1\x1f\x80\xcf\xea\x58\x48\xe4\x36"
      "\xac\xf6\xe8\x9d\xfa\xe0\xb3\xd9\x5b\x91\x1a\xf1\x81\x8e\x00\x81\x50\x48"
      "\x11\xa5\xf3\xc5\xd1\xce\xd3\xe5\x92\x22\x4f\x1d\x2c\xa3\xbd\xb2\xcc\x89"
      "\x00\x16\x05\xdb\x69\x87\x89\x9e\xb9\x9f\x94\x26\x54\x01\xa9\x5f\xf0\xa5"
      "\xa2\x66\x43\x8f\x1d\xb4\x61\xb7\xeb\xed\xd4\x19\xbc\x03\x8f\x7d\x36\xbd"
      "\x2b\xd4\xb3\xf9\x2c\xd1\x46\x9b\x63\xb1\xce\x45\x6a\x96\x15\x2d\x35\x3a"
      "\x8a\xb6\x5f\x8b\xae\x52\x1d\xb7\x3f\xf0\x0b\x5d\x5c\xac\x7a\x43\x9a\xb4"
      "\x0d\x97\xe5\x7f\x23\xe7\x03\xfd\x63\x95\x93\x0b\x9c\x34\x85\xab\x18\x1a"
      "\x83\xed\x56\x8c\xad\xe4\x31\x11\x53\x0e\xc5\x84\xcf\xb4\x8e\x0c\xc5\xd6"
      "\x3e\x28\x07\xb2\xe9\x85\x25\xa8\x4f\x9a\xc5\x9c\xf7\x4f\x3b\xa2\x79\xe2"
      "\x28\xe2\xa0\xdc\x8d\xa8\x01\x7c\xba\x39\x96\x54\x10\x08\x78\x5a\xb8\xf0"
      "\x41\xf0\xa8\xd1\x39\x9d\x88\xa3\xa5\x87\x65\xe5\xa0\x14\x9b\x9d\x0e\xa5"
      "\x4b\x32\x36\x75\x14\x97\x83\xec\x05\x7e\xc6\xd6\xe8\xe6\x00\xb9\xec\xed"
      "\x07\xdd\xcc\x56\xb7\x7d\x8e\xa0\x82\x23",
      838);
  *(uint64_t*)0x2000e010 = 0x20003ff6;
  memcpy((void*)0x20003ff6, "GPL\000", 4);
  *(uint32_t*)0x2000e018 = 4;
  *(uint32_t*)0x2000e01c = 0xfd90;
  *(uint64_t*)0x2000e020 = 0x2000cf3d;
  *(uint32_t*)0x2000e028 = 0;
  *(uint32_t*)0x2000e02c = 0;
  memset((void*)0x2000e030, 0, 16);
  *(uint32_t*)0x2000e040 = 0;
  *(uint32_t*)0x2000e044 = 0;
  *(uint32_t*)0x2000e048 = -1;
  *(uint32_t*)0x2000e04c = 8;
  *(uint64_t*)0x2000e050 = 0x20000000;
  *(uint32_t*)0x20000000 = 0;
  *(uint32_t*)0x20000004 = 0;
  *(uint32_t*)0x2000e058 = 0x366;
  *(uint32_t*)0x2000e05c = 0x10;
  *(uint64_t*)0x2000e060 = 0x20000000;
  *(uint32_t*)0x20000000 = 0;
  *(uint32_t*)0x20000004 = 0;
  *(uint32_t*)0x20000008 = 0;
  *(uint32_t*)0x2000000c = 0;
  *(uint32_t*)0x2000e068 = 0x1dd;
  *(uint32_t*)0x2000e06c = 0;
  *(uint32_t*)0x2000e070 = -1;
  *(uint32_t*)0x2000e074 = 0;
  *(uint64_t*)0x2000e078 = 0;
  *(uint64_t*)0x2000e080 = 0;
  *(uint32_t*)0x2000e088 = 0x10;
  *(uint32_t*)0x2000e08c = 0;
  res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x2000e000ul, /*size=*/0x48ul);
  if (res != -1)
    r[4] = res;
  *(uint32_t*)0x20000200 = 0xf;
  *(uint32_t*)0x20000204 = 4;
  *(uint32_t*)0x20000208 = 4;
  *(uint32_t*)0x2000020c = 0x12;
  *(uint32_t*)0x20000210 = 0;
  *(uint32_t*)0x20000214 = -1;
  *(uint32_t*)0x20000218 = 0;
  memset((void*)0x2000021c, 0, 16);
  *(uint32_t*)0x2000022c = 0;
  *(uint32_t*)0x20000230 = -1;
  *(uint32_t*)0x20000234 = 0;
  *(uint32_t*)0x20000238 = 0;
  *(uint32_t*)0x2000023c = 0;
  *(uint64_t*)0x20000240 = 0;
  res = syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x20000200ul, /*size=*/0x48ul);
  if (res != -1)
    r[5] = res;
  *(uint32_t*)0x20000080 = r[5];
  *(uint32_t*)0x20000084 = r[4];
  *(uint32_t*)0x20000088 = 5;
  *(uint32_t*)0x2000008c = 0;
  *(uint32_t*)0x20000090 = 0;
  *(uint32_t*)0x20000094 = -1;
  *(uint64_t*)0x20000098 = 0;
  syscall(__NR_bpf, /*cmd=*/8ul, /*arg=*/0x20000080ul, /*size=*/0x10ul);
  *(uint32_t*)0x20000100 = r[5];
  *(uint64_t*)0x20000108 = 0x20000340;
  *(uint64_t*)0x20000110 = 0x20000040;
  *(uint32_t*)0x20000040 = r[3];
  *(uint64_t*)0x20000118 = 0;
  syscall(__NR_bpf, /*cmd=*/2ul, /*arg=*/0x20000100ul, /*size=*/0x20ul);
  memset((void*)0x200000c0, 43, 1);
  syscall(__NR_sendto, /*fd=*/r[3], /*buf=*/0x200000c0ul,
          /*len=*/0xffffffffffffff60ul,
          /*f=MSG_OOB|MSG_NOSIGNAL|MSG_MORE|MSG_DONTROUTE|0x3400*/ 0xf405ul,
          /*addr=*/0ul, /*addrlen=*/0xf06ul);
  *(uint64_t*)0x20000340 = 0x20003000;
  *(uint32_t*)0x20000348 = 0x2000;
  *(uint64_t*)0x20000358 = 0;
  *(uint32_t*)0x20000360 = 0xfffffc44;
  *(uint32_t*)0x20000364 = 0;
  *(uint64_t*)0x20000368 = 0;
  *(uint64_t*)0x20000370 = 0;
  *(uint32_t*)0x2000037c = 0;
  *(uint32_t*)0x20000380 = 0x40;
  syscall(__NR_getsockopt, /*fd=*/r[3], /*level=*/6, /*optname=*/0x23,
          /*optval=*/0x20000340ul, /*optlen=*/0x20000380ul);
}
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);
  loop();
  return 0;
}