// https://syzkaller.appspot.com/bug?id=0b210638616bb68109e9642158d4c0072770ae1c
// 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/mount.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_mmap
#define __NR_mmap 222
#endif
#ifndef __NR_setns
#define __NR_setns 268
#endif
#ifndef __NR_setsockopt
#define __NR_setsockopt 208
#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 < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  setns arguments: [
  //    fd: fd_namespace (resource)
  //    type: ns_type = 0x0 (8 bytes)
  //  ]
  syscall(__NR_setns, /*fd=*/0xc9, /*type=*/0ul);
  //  socket$inet_icmp_raw arguments: [
  //    domain: const = 0x2 (8 bytes)
  //    type: const = 0x3 (8 bytes)
  //    proto: const = 0x1 (4 bytes)
  //  ]
  //  returns sock_icmp
  res = syscall(__NR_socket, /*domain=*/2ul, /*type=*/3ul, /*proto=*/1);
  if (res != -1)
    r[0] = res;
  //  setsockopt$IPT_SO_SET_REPLACE arguments: [
  //    fd: sock_in (resource)
  //    level: const = 0x0 (4 bytes)
  //    opt: const = 0x40 (4 bytes)
  //    val: ptr[in, ipt_replace] {
  //      union ipt_replace {
  //        raw: ipt_replace_t["raw", 2, 3, IPT_RAW_VALID_HOOKS,
  //        ipt_raw_matches, ipt_raw_targets, ipt_hook, ipt_unused, ipt_unused,
  //        ipt_hook, ipt_unused, ipt_hook, ipt_unused, ipt_unused, ipt_hook,
  //        ipt_unused] {
  //          name: buffer: {72 61 77 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00} (length 0x20)
  //          valid_hooks: const = 0x9 (4 bytes)
  //          num_entries: const = 0x3 (4 bytes)
  //          size: bytesize = 0x220 (4 bytes)
  //          hook_pre_routing: const = 0x0 (4 bytes)
  //          hook_local_in: const = 0xffffffff (4 bytes)
  //          hook_forward: const = 0xffffffff (4 bytes)
  //          hook_local_out: const = 0x188 (4 bytes)
  //          hook_post_routing: const = 0xffffffff (4 bytes)
  //          underflow_pre_routing: const = 0xf0 (4 bytes)
  //          underflow_local_in: const = 0xffffffff (4 bytes)
  //          underflow_forward: const = 0xffffffff (4 bytes)
  //          underflow_local_out: const = 0x188 (4 bytes)
  //          underflow_post_routing: const = 0xffffffff (4 bytes)
  //          num_counters: const = 0x3 (4 bytes)
  //          counters: nil
  //          entries: ipt_replace_entries[2, ipt_raw_matches, ipt_raw_targets]
  //          {
  //            entries: array[ipt_entry[ipt_raw_matches, ipt_raw_targets]] {
  //              ipt_entry[ipt_raw_matches, ipt_raw_targets] {
  //                matches: ipt_entry_matches[ipt_raw_matches] {
  //                  ip: union ipt_ip_or_uncond {
  //                    uncond: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00
  //                    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //                    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //                    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //                    00 00 00 00 00 00 00 00 00 00 00 00 00 00} (length 0x54)
  //                  }
  //                  nfcache: const = 0x0 (4 bytes)
  //                  target_offset: len = 0xc8 (2 bytes)
  //                  next_offset: len = 0xf0 (2 bytes)
  //                  comefrom: const = 0x0 (4 bytes)
  //                  counters: xt_counters {
  //                    pcnt: const = 0x0 (8 bytes)
  //                    bcnt: const = 0x0 (8 bytes)
  //                  }
  //                  matches: array[ipt_raw_matches] {
  //                    union ipt_raw_matches {
  //                      common: union ipt_matches {
  //                        inet: union xt_inet_matches {
  //                          hashlimit1: xt_entry_match_t["hashlimit",
  //                          xt_hashlimit_mtinfo1, 1] {
  //                            header: xt_entry_match["hashlimit", 1] {
  //                              match_size: len = 0x58 (2 bytes)
  //                              name: buffer: {68 61 73 68 6c 69 6d 69 74 00
  //                              00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //                              00 00 00 00} (length 0x1d) revision: const =
  //                              0x1 (1 bytes)
  //                            }
  //                            data: xt_hashlimit_mtinfo1 {
  //                              name: buffer: {6c 6f 00 00 00 00 00 00 00 00
  //                              00 00 00 00 00 00} (length 0x10) cfg:
  //                              hashlimit_cfg1 {
  //                                mode: xt_hashlimit_modes = 0x0 (4 bytes)
  //                                avg: int32 = 0x3e8 (4 bytes)
  //                                burst: int32 = 0x5 (4 bytes)
  //                                size: int32 = 0x8 (4 bytes)
  //                                max: int32 = 0x40 (4 bytes)
  //                                gc_interval: int32 = 0x3e8 (4 bytes)
  //                                expire: int32 = 0x3e8 (4 bytes)
  //                                srcmask: xt_hashlimit_mask = 0x0 (1 bytes)
  //                                dstmask: xt_hashlimit_mask = 0x0 (1 bytes)
  //                                pad = 0x0 (2 bytes)
  //                              }
  //                              hinfo: align64[intptr] {
  //                                v: intptr = 0x0 (8 bytes)
  //                              }
  //                            }
  //                          }
  //                        }
  //                      }
  //                    }
  //                  }
  //                }
  //                target: union ipt_raw_targets {
  //                  common: union ipt_targets {
  //                    unspec: union xt_unspec_targets {
  //                      STANDARD: xt_target_t["", flags[nf_verdicts, int32],
  //                      0] {
  //                        target_size: len = 0x28 (2 bytes)
  //                        name: buffer: {00 00 00 00 00 00 00 00 00 00 00 00
  //                        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00}
  //                        (length 0x1d) revision: const = 0x0 (1 bytes) data:
  //                        nf_verdicts = 0xffffffffffffffff (4 bytes) pad = 0x0
  //                        (4 bytes)
  //                      }
  //                    }
  //                  }
  //                }
  //              }
  //              ipt_entry[ipt_raw_matches, ipt_raw_targets] {
  //                matches: ipt_entry_matches[ipt_raw_matches] {
  //                  ip: union ipt_ip_or_uncond {
  //                    uncond: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00
  //                    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //                    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //                    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //                    00 00 00 00 00 00 00 00 00 00 00 00 00 00} (length 0x54)
  //                  }
  //                  nfcache: const = 0x0 (4 bytes)
  //                  target_offset: len = 0x70 (2 bytes)
  //                  next_offset: len = 0x98 (2 bytes)
  //                  comefrom: const = 0x0 (4 bytes)
  //                  counters: xt_counters {
  //                    pcnt: const = 0x0 (8 bytes)
  //                    bcnt: const = 0x0 (8 bytes)
  //                  }
  //                  matches: array[ipt_raw_matches] {
  //                  }
  //                }
  //                target: union ipt_raw_targets {
  //                  common: union ipt_targets {
  //                    unspec: union xt_unspec_targets {
  //                      STANDARD: xt_target_t["", flags[nf_verdicts, int32],
  //                      0] {
  //                        target_size: len = 0x28 (2 bytes)
  //                        name: buffer: {00 00 00 00 00 00 00 00 00 00 00 00
  //                        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00}
  //                        (length 0x1d) revision: const = 0x0 (1 bytes) data:
  //                        nf_verdicts = 0xffffffffffffffff (4 bytes) pad = 0x0
  //                        (4 bytes)
  //                      }
  //                    }
  //                  }
  //                }
  //              }
  //            }
  //            underflow: ipt_entry_underflow {
  //              matches: ipt_entry_underflow_matches {
  //                ip: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //                00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //                00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //                00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //                00 00 00 00 00 00 00 00} (length 0x54) nfcache: const = 0x0
  //                (4 bytes) target_offset: len = 0x70 (2 bytes) next_offset:
  //                len = 0x98 (2 bytes) comefrom: const = 0x0 (4 bytes)
  //                counters: xt_counters {
  //                  pcnt: const = 0x0 (8 bytes)
  //                  bcnt: const = 0x0 (8 bytes)
  //                }
  //              }
  //              target: xt_target_t["", const[NF_ACCEPT_VERDICT, int32], 0] {
  //                target_size: len = 0x28 (2 bytes)
  //                name: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //                00 00 00 00 00 00 00 00 00 00 00 00 00 00} (length 0x1d)
  //                revision: const = 0x0 (1 bytes)
  //                data: const = 0xffffffffffffffff (4 bytes)
  //                pad = 0x0 (4 bytes)
  //              }
  //            }
  //          }
  //        }
  //      }
  //    }
  //    len: len = 0x280 (8 bytes)
  //  ]
  memcpy((void*)0x20000d40,
         "raw\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",
         32);
  *(uint32_t*)0x20000d60 = 9;
  *(uint32_t*)0x20000d64 = 3;
  *(uint32_t*)0x20000d68 = 0x220;
  *(uint32_t*)0x20000d6c = 0;
  *(uint32_t*)0x20000d70 = -1;
  *(uint32_t*)0x20000d74 = -1;
  *(uint32_t*)0x20000d78 = 0x188;
  *(uint32_t*)0x20000d7c = -1;
  *(uint32_t*)0x20000d80 = 0xf0;
  *(uint32_t*)0x20000d84 = -1;
  *(uint32_t*)0x20000d88 = -1;
  *(uint32_t*)0x20000d8c = 0x188;
  *(uint32_t*)0x20000d90 = -1;
  *(uint32_t*)0x20000d94 = 3;
  *(uint64_t*)0x20000d98 = 0;
  memset((void*)0x20000da0, 0, 84);
  *(uint32_t*)0x20000df4 = 0;
  *(uint16_t*)0x20000df8 = 0xc8;
  *(uint16_t*)0x20000dfa = 0xf0;
  *(uint32_t*)0x20000dfc = 0;
  *(uint64_t*)0x20000e00 = 0;
  *(uint64_t*)0x20000e08 = 0;
  *(uint16_t*)0x20000e10 = 0x58;
  memcpy((void*)0x20000e12,
         "hashlimit\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000",
         29);
  *(uint8_t*)0x20000e2f = 1;
  memcpy((void*)0x20000e30,
         "lo\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 16);
  *(uint32_t*)0x20000e40 = 0;
  *(uint32_t*)0x20000e44 = 0x3e8;
  *(uint32_t*)0x20000e48 = 5;
  *(uint32_t*)0x20000e4c = 8;
  *(uint32_t*)0x20000e50 = 0x40;
  *(uint32_t*)0x20000e54 = 0x3e8;
  *(uint32_t*)0x20000e58 = 0x3e8;
  *(uint8_t*)0x20000e5c = 0;
  *(uint8_t*)0x20000e5d = 0;
  *(uint64_t*)0x20000e60 = 0;
  *(uint16_t*)0x20000e68 = 0x28;
  memset((void*)0x20000e6a, 0, 29);
  *(uint8_t*)0x20000e87 = 0;
  *(uint32_t*)0x20000e88 = -1;
  memset((void*)0x20000e90, 0, 84);
  *(uint32_t*)0x20000ee4 = 0;
  *(uint16_t*)0x20000ee8 = 0x70;
  *(uint16_t*)0x20000eea = 0x98;
  *(uint32_t*)0x20000eec = 0;
  *(uint64_t*)0x20000ef0 = 0;
  *(uint64_t*)0x20000ef8 = 0;
  *(uint16_t*)0x20000f00 = 0x28;
  memset((void*)0x20000f02, 0, 29);
  *(uint8_t*)0x20000f1f = 0;
  *(uint32_t*)0x20000f20 = -1;
  memset((void*)0x20000f28, 0, 84);
  *(uint32_t*)0x20000f7c = 0;
  *(uint16_t*)0x20000f80 = 0x70;
  *(uint16_t*)0x20000f82 = 0x98;
  *(uint32_t*)0x20000f84 = 0;
  *(uint64_t*)0x20000f88 = 0;
  *(uint64_t*)0x20000f90 = 0;
  *(uint16_t*)0x20000f98 = 0x28;
  memset((void*)0x20000f9a, 0, 29);
  *(uint8_t*)0x20000fb7 = 0;
  *(uint32_t*)0x20000fb8 = -1;
  syscall(__NR_setsockopt, /*fd=*/r[0], /*level=*/0, /*opt=*/0x40,
          /*val=*/0x20000d40ul, /*len=*/0x280ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  loop();
  return 0;
}