// https://syzkaller.appspot.com/bug?id=6c4808432951aa7d31bee502a76de49469524572
// 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_ioctl
#define __NR_ioctl 29
#endif
#ifndef __NR_mmap
#define __NR_mmap 222
#endif
#ifndef __NR_sendmsg
#define __NR_sendmsg 211
#endif
#ifndef __NR_sendto
#define __NR_sendto 206
#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[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)) {
  }
  //  socket$nl_route arguments: [
  //    domain: const = 0x10 (8 bytes)
  //    type: const = 0x3 (8 bytes)
  //    proto: const = 0x0 (4 bytes)
  //  ]
  //  returns sock_nl_route
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0);
  if (res != -1)
    r[0] = res;
  //  socket$inet6_udp arguments: [
  //    domain: const = 0xa (8 bytes)
  //    type: const = 0x2 (8 bytes)
  //    proto: const = 0x0 (4 bytes)
  //  ]
  //  returns sock_udp6
  res = syscall(__NR_socket, /*domain=*/0xaul, /*type=*/2ul, /*proto=*/0);
  if (res != -1)
    r[1] = res;
  //  ioctl$sock_SIOCGIFINDEX arguments: [
  //    fd: sock (resource)
  //    cmd: const = 0x8933 (4 bytes)
  //    arg: ptr[out, ifreq_dev_t[devnames, ifindex]] {
  //      ifreq_dev_t[devnames, ifindex] {
  //        ifr_ifrn: buffer: {6c 6f 00 00 00 00 00 00 00 00 00 00 00 00 00 00}
  //        (length 0x10) elem: ifindex (resource) pad = 0x0 (20 bytes)
  //      }
  //    }
  //  ]
  memcpy((void*)0x20000040,
         "lo\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 16);
  res = syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0x8933, /*arg=*/0x20000040ul);
  if (res != -1)
    r[2] = *(uint32_t*)0x20000050;
  //  sendmsg$nl_route arguments: [
  //    fd: sock_nl_route (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_route]] {
  //      msghdr_netlink[netlink_msg_route] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_route]] {
  //          iovec[in, netlink_msg_route] {
  //            addr: ptr[inout, array[ANYUNION]] {
  //              array[ANYUNION] {
  //                union ANYUNION {
  //                  ANYBLOB: buffer: {40 00 00 00 68 00 01 00 00 00 00 00 00
  //                  00 00 00 0a 00 00 00 00 00 00 00 06 00 07 00 02 00 00 00
  //                  18 00 08 80 14 00 01 00 00 00 00 00 00 00 00 00 00 00 04
  //                  00 00 00 00 00 08 00 05 00} (length 0x3c)
  //                }
  //                union ANYUNION {
  //                  ANYRES32: ANYRES32 (resource)
  //                }
  //              }
  //            }
  //            len: len = 0x40 (8 bytes)
  //          }
  //        }
  //        vlen: const = 0x1 (8 bytes)
  //        ctrl: const = 0x0 (8 bytes)
  //        ctrllen: const = 0x0 (8 bytes)
  //        f: send_flags = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x0 (8 bytes)
  //  ]
  *(uint64_t*)0x20000380 = 0;
  *(uint32_t*)0x20000388 = 0;
  *(uint64_t*)0x20000390 = 0x20000240;
  *(uint64_t*)0x20000240 = 0x20000480;
  memcpy((void*)0x20000480,
         "\x40\x00\x00\x00\x68\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0a"
         "\x00\x00\x00\x00\x00\x00\x00\x06\x00\x07\x00\x02\x00\x00\x00\x18\x00"
         "\x08\x80\x14\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04"
         "\x00\x00\x00\x00\x00\x08\x00\x05\x00",
         60);
  *(uint32_t*)0x200004bc = r[2];
  *(uint64_t*)0x20000248 = 0x40;
  *(uint64_t*)0x20000398 = 1;
  *(uint64_t*)0x200003a0 = 0;
  *(uint64_t*)0x200003a8 = 0;
  *(uint32_t*)0x200003b0 = 0;
  syscall(__NR_sendmsg, /*fd=*/r[0], /*msg=*/0x20000380ul, /*f=*/0ul);
  //  socket$nl_route arguments: [
  //    domain: const = 0x10 (8 bytes)
  //    type: const = 0x3 (8 bytes)
  //    proto: const = 0x0 (4 bytes)
  //  ]
  //  returns sock_nl_route
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0);
  if (res != -1)
    r[3] = res;
  //  sendmsg$nl_route arguments: [
  //    fd: sock_nl_route (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_route]] {
  //      msghdr_netlink[netlink_msg_route] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_route]] {
  //          iovec[in, netlink_msg_route] {
  //            addr: ptr[in, netlink_msg_route] {
  //              union netlink_msg_route {
  //                ipv4_newroute: netlink_msg_t[const[RTM_NEWROUTE, int16],
  //                rtmsg[AF_INET], rtm_ipv4_policy] {
  //                  len: len = 0x24 (4 bytes)
  //                  type: const = 0x18 (2 bytes)
  //                  flags: netlink_msg_flags = 0x35f32a6dfa748ddd (2 bytes)
  //                  seq: int32 = 0x0 (4 bytes)
  //                  pid: int32 = 0x0 (4 bytes)
  //                  payload: rtmsg[AF_INET] {
  //                    rtm_family: const = 0x2 (1 bytes)
  //                    rtm_dst_len: rtm_addr_len = 0x0 (1 bytes)
  //                    rtmsrcdst_len: rtm_addr_len = 0x10 (1 bytes)
  //                    rtm_tos: int8 = 0x0 (1 bytes)
  //                    rtm_table: rt_table_types = 0xfe (1 bytes)
  //                    rtm_protocol: rtm_protocol = 0x4 (1 bytes)
  //                    rtm_scope: rt_scope_t = 0x0 (1 bytes)
  //                    rtm_type: rtm_type = 0x1 (1 bytes)
  //                    rtm_flags: rtm_flags = 0x20000000 (4 bytes)
  //                  }
  //                  attrs: array[rtm_ipv4_policy] {
  //                    union rtm_ipv4_policy {
  //                      RTA_NH_ID: nlattr_t[const[RTA_NH_ID, int16], int32] {
  //                        nla_len: offsetof = 0x8 (2 bytes)
  //                        nla_type: const = 0x1e (2 bytes)
  //                        payload: int32 = 0x2 (4 bytes)
  //                        size: buffer: {} (length 0x0)
  //                      }
  //                    }
  //                  }
  //                }
  //              }
  //            }
  //            len: len = 0x24 (8 bytes)
  //          }
  //        }
  //        vlen: const = 0x1 (8 bytes)
  //        ctrl: const = 0x0 (8 bytes)
  //        ctrllen: const = 0x0 (8 bytes)
  //        f: send_flags = 0x4a044 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x4010 (8 bytes)
  //  ]
  *(uint64_t*)0x20000180 = 0;
  *(uint32_t*)0x20000188 = 0;
  *(uint64_t*)0x20000190 = 0x20000780;
  *(uint64_t*)0x20000780 = 0x20000000;
  *(uint32_t*)0x20000000 = 0x24;
  *(uint16_t*)0x20000004 = 0x18;
  *(uint16_t*)0x20000006 = 0x8ddd;
  *(uint32_t*)0x20000008 = 0;
  *(uint32_t*)0x2000000c = 0;
  *(uint8_t*)0x20000010 = 2;
  *(uint8_t*)0x20000011 = 0;
  *(uint8_t*)0x20000012 = 0x10;
  *(uint8_t*)0x20000013 = 0;
  *(uint8_t*)0x20000014 = 0xfe;
  *(uint8_t*)0x20000015 = 4;
  *(uint8_t*)0x20000016 = 0;
  *(uint8_t*)0x20000017 = 1;
  *(uint32_t*)0x20000018 = 0x20000000;
  *(uint16_t*)0x2000001c = 8;
  *(uint16_t*)0x2000001e = 0x1e;
  *(uint32_t*)0x20000020 = 2;
  *(uint64_t*)0x20000788 = 0x24;
  *(uint64_t*)0x20000198 = 1;
  *(uint64_t*)0x200001a0 = 0;
  *(uint64_t*)0x200001a8 = 0;
  *(uint32_t*)0x200001b0 = 0x4a044;
  syscall(__NR_sendmsg, /*fd=*/r[3], /*msg=*/0x20000180ul,
          /*f=MSG_PROBE|MSG_NOSIGNAL*/ 0x4010ul);
  //  socket$inet_sctp arguments: [
  //    domain: const = 0x2 (8 bytes)
  //    type: sctp_socket_type = 0x5 (8 bytes)
  //    proto: const = 0x84 (4 bytes)
  //  ]
  //  returns sock_sctp
  res = syscall(__NR_socket, /*domain=*/2ul, /*type=SOCK_SEQPACKET*/ 5ul,
                /*proto=*/0x84);
  if (res != -1)
    r[4] = res;
  //  sendto$inet arguments: [
  //    fd: sock_in (resource)
  //    buf: ptr[in, buffer] {
  //      buffer: {cb} (length 0x1)
  //    }
  //    len: len = 0x1 (8 bytes)
  //    f: send_flags = 0x0 (8 bytes)
  //    addr: ptr[in, sockaddr_in] {
  //      sockaddr_in {
  //        family: const = 0x2 (2 bytes)
  //        port: int16be = 0x0 (2 bytes)
  //        addr: union ipv4_addr {
  //          private: int32be = 0xa010102 (4 bytes)
  //        }
  //        pad = 0x0 (8 bytes)
  //      }
  //    }
  //    addrlen: len = 0x10 (8 bytes)
  //  ]
  memset((void*)0x200000c0, 203, 1);
  *(uint16_t*)0x20000100 = 2;
  *(uint16_t*)0x20000102 = htobe16(0);
  *(uint32_t*)0x20000104 = htobe32(0xa010102);
  syscall(__NR_sendto, /*fd=*/r[4], /*buf=*/0x200000c0ul, /*len=*/1ul,
          /*f=*/0ul, /*addr=*/0x20000100ul, /*addrlen=*/0x10ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-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=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  loop();
  return 0;
}