// https://syzkaller.appspot.com/bug?id=d54834fc30378de92b867296890ae6f12d12fbab
// 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 280
#endif
#ifndef __NR_close
#define __NR_close 57
#endif
#ifndef __NR_listen
#define __NR_listen 201
#endif
#ifndef __NR_mmap
#define __NR_mmap 222
#endif
#ifndef __NR_openat
#define __NR_openat 56
#endif
#ifndef __NR_sendmmsg
#define __NR_sendmmsg 269
#endif
#ifndef __NR_sendmsg
#define __NR_sendmsg 211
#endif
#ifndef __NR_socket
#define __NR_socket 198
#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;
}

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 < 15000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

uint64_t r[5] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  memcpy((void*)0x200003c0, "cpuacct.stat\000", 13);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200003c0ul,
                /*flags=*/0x26e1ul, /*mode=*/0ul);
  if (res != -1)
    r[0] = res;
  syscall(__NR_close, /*fd=*/r[0]);
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0xc);
  if (res != -1)
    r[1] = res;
  syscall(__NR_close, /*fd=*/r[1]);
  res = syscall(__NR_socket, /*domain=*/0xaul, /*type=*/1ul, /*proto=*/0);
  if (res != -1)
    r[2] = res;
  syscall(__NR_listen, /*fd=*/r[2], /*backlog=*/0);
  *(uint32_t*)0x20000680 = 0x10;
  *(uint32_t*)0x20000684 = 4;
  *(uint64_t*)0x20000688 = 0x20000380;
  memcpy((void*)0x20000380,
         "\x18\x02\x00\x00\x00\xc4\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x85"
         "\x00\x00\x00\x3e\x00\x00\x00\x95",
         25);
  *(uint64_t*)0x20000690 = 0x200000c0;
  memcpy((void*)0x200000c0, "GPL\000", 4);
  *(uint32_t*)0x20000698 = 0;
  *(uint32_t*)0x2000069c = 0;
  *(uint64_t*)0x200006a0 = 0;
  *(uint32_t*)0x200006a8 = 0;
  *(uint32_t*)0x200006ac = 0;
  memset((void*)0x200006b0, 0, 16);
  *(uint32_t*)0x200006c0 = 0;
  *(uint32_t*)0x200006c4 = 0;
  *(uint32_t*)0x200006c8 = -1;
  *(uint32_t*)0x200006cc = 8;
  *(uint64_t*)0x200006d0 = 0;
  *(uint32_t*)0x200006d8 = 0;
  *(uint32_t*)0x200006dc = 0x10;
  *(uint64_t*)0x200006e0 = 0;
  *(uint32_t*)0x200006e8 = 0;
  *(uint32_t*)0x200006ec = 0;
  *(uint32_t*)0x200006f0 = 0;
  *(uint32_t*)0x200006f4 = 0;
  *(uint64_t*)0x200006f8 = 0;
  *(uint64_t*)0x20000700 = 0;
  *(uint32_t*)0x20000708 = 0x10;
  *(uint32_t*)0x2000070c = 0;
  res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x20000680ul, /*size=*/0x90ul);
  if (res != -1)
    r[3] = res;
  *(uint32_t*)0x200023c0 = 0x12;
  *(uint32_t*)0x200023c4 = 4;
  *(uint32_t*)0x200023c8 = 8;
  *(uint32_t*)0x200023cc = 0xb;
  *(uint32_t*)0x200023d0 = 0;
  *(uint32_t*)0x200023d4 = -1;
  *(uint32_t*)0x200023d8 = 0;
  memset((void*)0x200023dc, 0, 16);
  *(uint32_t*)0x200023ec = 0;
  *(uint32_t*)0x200023f0 = -1;
  *(uint32_t*)0x200023f4 = 0;
  *(uint32_t*)0x200023f8 = 0;
  *(uint32_t*)0x200023fc = 0;
  *(uint64_t*)0x20002400 = 0;
  res = syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x200023c0ul, /*size=*/0x48ul);
  if (res != -1)
    r[4] = res;
  *(uint32_t*)0x200001c0 = r[4];
  *(uint32_t*)0x200001c4 = r[3];
  *(uint32_t*)0x200001c8 = 7;
  *(uint32_t*)0x200001cc = 0;
  *(uint32_t*)0x200001d0 = 0;
  *(uint32_t*)0x200001d4 = -1;
  *(uint64_t*)0x200001d8 = 0;
  syscall(__NR_bpf, /*cmd=*/8ul, /*arg=*/0x200001c0ul, /*size=*/0x10ul);
  *(uint32_t*)0x20000500 = r[4];
  *(uint64_t*)0x20000508 = 0x20000240;
  *(uint64_t*)0x20000510 = 0x200004c0;
  *(uint32_t*)0x200004c0 = r[2];
  *(uint64_t*)0x20000518 = 0;
  syscall(__NR_bpf, /*cmd=*/2ul, /*arg=*/0x20000500ul, /*size=*/0x20ul);
  *(uint64_t*)0x20002f40 = 0;
  *(uint32_t*)0x20002f48 = 0;
  *(uint64_t*)0x20002f50 = 0x20000bc0;
  *(uint64_t*)0x20000bc0 = 0x20000140;
  memcpy((void*)0x20000140,
         "\xe4\x3d\x04\xfd\x21\x70\xbd\x50\x12\x5f\xfa\x6d\x1e\x17\x9f\x98\x98"
         "\x4b\x2c\x72\xca\x3b\xff\xd4\x87\x1a\x11\x29\x72\x96\x3a\x9b\x52\x49"
         "\x58\xb6\x3a\x16\x19\x12\x2a\xcc\x32\xa1\xe1\xc8\x1a\x85",
         48);
  *(uint64_t*)0x20000bc8 = 0x30;
  *(uint64_t*)0x20000bd0 = 0x20000480;
  memcpy((void*)0x20000480,
         "\x14\x9d\x04\x4c\x07\xe5\x78\xf4\x8f\x6e\x7f\xb6\x51\x72\xa6\x1b\x03"
         "\x16\xe2\x0d\x92\xe7\x1c\x83\x4e\x31\xde\x43\x35\xc6",
         30);
  *(uint64_t*)0x20000bd8 = 0x1e;
  *(uint64_t*)0x20002f58 = 2;
  *(uint64_t*)0x20002f60 = 0;
  *(uint64_t*)0x20002f68 = 0;
  *(uint32_t*)0x20002f70 = 0;
  *(uint32_t*)0x20002f78 = 0;
  *(uint64_t*)0x20002f80 = 0;
  *(uint32_t*)0x20002f88 = 0;
  *(uint64_t*)0x20002f90 = 0x20000e00;
  *(uint64_t*)0x20000e00 = 0x20001140;
  memcpy(
      (void*)0x20001140,
      "\x2c\xd3\x0c\x74\x45\x9f\xd7\xf3\x86\x80\x40\xd8\x41\xd7\x6b\x18\x1f\xd9"
      "\x30\x7a\xb6\x16\x0b\xd1\x99\xa5\x0b\x64\xe0\x9d\x2a\x59\x50\xfd\x97\xde"
      "\x7c\xca\x2e\x06\xd1\x4a\x95\x36\x2b\x04\x71\x5a\x1e\x66\x68\x84\xf0\x0b"
      "\x75\x4f\xad\x3a\xd2\x9f\x43\x66\x14\x8e\x82\x25\xd6\xb5\x1c\x6e\xeb\x37"
      "\x07\xe5\xc2\xc0\x9b\x86\x6c\x08\x71\x2a\xb9\x6b\x3b\xfb\x9e\xca\x39\x05"
      "\x27\xd3\xbd\x24\xb8\xac\x8f\xbe\xfb\x06\x46\x22\x0d\xda\x67\xb5\x0f\xef"
      "\xa2\x86\x62\xfe\xf7\x69\x96\x2f\x3c\x93\xb3\x83\x9b\xb0\x4a\x79\xed\x46"
      "\x42\x6b\xc4\xa3\x84\x98\x06\xa1\xe8\xfb\x00\x38\x99\x7c\x40\x88\xa2\x7c"
      "\xaf\x95\x3c\xe6\xc5\x25\x07\xd3\x07\xe8\xb7\x8d\x70\xc3\xfe\xb2\xc0\xb6"
      "\xbb\xac\x1a\x34\x6a\x68\x9f\x03\x3d\xe5\x70\xe0\x1b\xcf\xa2\x3a\xe9\x0b"
      "\x29\x4f\x25\x4f\x86\x71\xce\x0d\x68\x32\xa3\xfc\xbf\x48\xfa\x96\x18\xbf"
      "\x49\xed\xec\x47\xba\x1e\x07\x25\xe5\xd8\xad\x32\xa7\x46\xe0\x5e\xad\x48"
      "\x2c\x38\xb3\x4d\x52\xef\xff\x08\x58\x93\x24\x71\xf0\xbe\x04\xf6\x72\x22"
      "\xec\xa8\xdb\xea\x65\xc4\x1e\xff\x6e\xa0\xb0\xeb\x0b\xd4\x5f\xa2\xe8\xdd"
      "\xb2\xfc\x5d\xd1\x79\x04\x23\x8a\x58\x64\xe8\x02\x25\xa6\xe6\xe6\x72\x12"
      "\xc9\xf8\xcc\x44\x50\x25\xd9\xda\x9a\x7f\x26\xf2\xb0\x3a\x8b\x46\x96\xe0"
      "\x93\xa6\x58\x1a\x06\xfc\x65\x06\xe9\x8d\x90\x0a\xcb\xb2\x0a\x4e\xf7\xf3"
      "\x75\x1a\xc7\x2b\x3c\x91\x68\xee\xa2\x21\xed\x96\xbd\x13\x65\xe9\x73\xae"
      "\x45\xf5\xb7\xc1\xd8\x92\x23\xd9\x99\xbe\xda\x3d\x2b\x4f\xe3\x8a\x2e\x37"
      "\x13\x36\xaf\xa0\x1c\xb7\x81\x12\xfd\xf7\x99\x78\x03\xd0\xf7\x3d\xab\xb2"
      "\x40\x76\xed\xb1\x63\x15\xeb\xf5\xa9\x01\x71\x31\x4e\x8f\xcd\xfe\xc7\x4b"
      "\x46\xc8\x3f\xa3\x48\x1e\x0c\x57\x5e\x78\xba\xc1\x58\xac\x4f\x4e\x36\x82"
      "\x33\xf5\xda\x9b\x11\xc9\xdf\x11\xc6\xf2\xa1\x2b\xde\x17\x59\xd9\x3d\x6c"
      "\xfe\x3a\x43\x5d\x16\x06\x39\x05\xf0\xe1\x87\xde\x92\xe7\x14\xb5\x92",
      431);
  *(uint64_t*)0x20000e08 = 0x1af;
  *(uint64_t*)0x20002f98 = 1;
  *(uint64_t*)0x20002fa0 = 0;
  *(uint64_t*)0x20002fa8 = 0;
  *(uint32_t*)0x20002fb0 = 0;
  *(uint32_t*)0x20002fb8 = 0;
  syscall(__NR_sendmmsg, /*fd=*/r[1], /*mmsg=*/0x20002f40ul, /*vlen=*/2ul,
          /*f=*/0ul);
  *(uint64_t*)0x20001100 = 0;
  *(uint32_t*)0x20001108 = 0;
  *(uint64_t*)0x20001110 = 0x200010c0;
  *(uint64_t*)0x200010c0 = 0x20000740;
  *(uint32_t*)0x20000740 = 0x14;
  *(uint16_t*)0x20000744 = 0x15;
  *(uint16_t*)0x20000746 = 0;
  *(uint32_t*)0x20000748 = 0;
  *(uint32_t*)0x2000074c = 0;
  *(uint8_t*)0x20000750 = 0x25;
  *(uint8_t*)0x20000751 = 0;
  *(uint64_t*)0x200010c8 = 0x14;
  *(uint64_t*)0x20001118 = 1;
  *(uint64_t*)0x20001120 = 0;
  *(uint64_t*)0x20001128 = 0;
  *(uint32_t*)0x20001130 = 0;
  syscall(__NR_sendmsg, /*fd=*/r[1], /*msg=*/0x20001100ul,
          /*f=MSG_ZEROCOPY|MSG_OOB|MSG_DONTWAIT|MSG_CONFIRM*/ 0x4000841ul);
  *(uint64_t*)0x20000240 = 0;
  *(uint32_t*)0x20000248 = 0;
  *(uint64_t*)0x20000250 = 0x20000080;
  *(uint64_t*)0x20000080 = 0x200001c0;
  *(uint64_t*)0x20000088 = 0x33fe0;
  *(uint64_t*)0x20000258 = 1;
  *(uint64_t*)0x20000260 = 0;
  *(uint64_t*)0x20000268 = 0;
  *(uint32_t*)0x20000270 = 0;
  syscall(__NR_sendmsg, /*fd=*/r[0], /*msg=*/0x20000240ul, /*f=*/0ul);
}
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;
}