// https://syzkaller.appspot.com/bug?id=e741c818a5fef5622785c93f62391e1e88c00624
// 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;
}

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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  socket$netlink arguments: [
  //    domain: const = 0x10 (8 bytes)
  //    type: const = 0x3 (8 bytes)
  //    proto: netlink_proto = 0x0 (4 bytes)
  //  ]
  //  returns sock_netlink
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0);
  if (res != -1)
    r[0] = res;
  //  socket arguments: [
  //    domain: socket_domain = 0x10 (8 bytes)
  //    type: socket_type = 0x803 (8 bytes)
  //    proto: int32 = 0x0 (4 bytes)
  //  ]
  //  returns sock
  res = syscall(__NR_socket, /*domain=AF_NETLINK*/ 0x10ul,
                /*type=SOCK_NONBLOCK|SOCK_RAW*/ 0x803ul, /*proto=*/0);
  if (res != -1)
    r[1] = res;
  //  getsockname$packet arguments: [
  //    fd: sock_packet (resource)
  //    addr: ptr[out, sockaddr_ll] {
  //      sockaddr_ll {
  //        sll_family: const = 0x11 (2 bytes)
  //        sll_protocol: packet_protocols = 0x0 (2 bytes)
  //        sll_ifindex: ifindex (resource)
  //        sll_hatype: const = 0x1 (2 bytes)
  //        sll_pkttype: int8 = 0x0 (1 bytes)
  //        sll_halen: const = 0x6 (1 bytes)
  //        sll_addr: union mac_addr {
  //          broadcast: buffer: (DirOut)
  //        }
  //        pad: buffer: (DirOut)
  //      }
  //    }
  //    addrlen: ptr[inout, len] {
  //      len = 0x14 (4 bytes)
  //    }
  //  ]
  *(uint32_t*)0x200000000080 = 0x14;
  res = syscall(__NR_getsockname, /*fd=*/r[1], /*addr=*/0x200000000600ul,
                /*addrlen=*/0x200000000080ul);
  if (res != -1)
    r[2] = *(uint32_t*)0x200000000604;
  //  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: {3c 00 00 00 10 00 85 06 00 00 20 00 fe
  //                  61 22 33 ca 00 08 00} (length 0x14)
  //                }
  //                union ANYUNION {
  //                  ANYRES32: ANYRES32 (resource)
  //                }
  //                union ANYUNION {
  //                  ANYBLOB: buffer: {23 77 f2 9e 25 21 55 b2 1c 00 12 00 0c
  //                  00 01 00 62 6f 6e 64 00 00 00 00 0c 00 02 00 08 00 01 00
  //                  01 34 e7 30 70 75 a7 cc 6d 2d ba 6e 4d ce 25 f1 89 68 dd
  //                  3d 6f 77 19 9c d0 6d 7a 4c fc dc 99 dc fd 5e c3 f3 e3 d9
  //                  8b e8 a8 ba c2 dc c4 14 b5 8d da 48 b3 ea 35 41 1d 5b 11
  //                  2c 26 f3 1b 35 29 82 f5 5b e4 46 b3 dd 47 e4 35 95 42 52
  //                  21 38 28 ba 98 a1 bc 36 32 78 f8 bd 13 ad 74 6b b8 ed ad
  //                  61 91 62 f5 d1 89 2e 9f a4 2e 4f e2 b6 0f 5f e2 bb 96 3f
  //                  08 d6 69 68 20 ad e9 cf f2 b2 de b9 1c e5 65 71 68 a9 0d
  //                  c5 23 0e 33 b8 c2 6c d9 25 c3 13 66 a2 ae 33 9f 12 ba 89
  //                  66 be 14 39 ce c6 35 b0 8c 0a 97 49 0b 13 3a 5b 73 60 b5
  //                  93 47 83 3f c9 5a 7b f3 dc 9b c6 47 41 de 1a 6e 83 c9 bd
  //                  fd fd 0b aa be c9 81 09 9b b3 db d6 4a 7e 79 79 cf b7 93
  //                  5a ff bc da 49 19 0b 7e c9 bc 1e 89 d6 cc ed ec 20 f9 1b
  //                  57 1e 6f c0 49 ba 82 82 1b 26 ca 4f 85 f4 b0 3f 70 b1 76
  //                  b4 3d e9 15 be c7 6e 40 5b ce 49 a4 b4 6e c7 45 b5 1f 36
  //                  28 29 16 b7 7d 7f 91 3a 6a fd 68 13 df 2c} (length 0x138)
  //                }
  //              }
  //            }
  //            len: len = 0x3c (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*)0x200000000040 = 0;
  *(uint32_t*)0x200000000048 = 0;
  *(uint64_t*)0x200000000050 = 0x200000000000;
  *(uint64_t*)0x200000000000 = 0x200000000340;
  memcpy((void*)0x200000000340,
         "\x3c\x00\x00\x00\x10\x00\x85\x06\x00\x00\x20\x00\xfe\x61\x22\x33\xca"
         "\x00\x08\x00",
         20);
  *(uint32_t*)0x200000000354 = r[2];
  memcpy(
      (void*)0x200000000358,
      "\x23\x77\xf2\x9e\x25\x21\x55\xb2\x1c\x00\x12\x00\x0c\x00\x01\x00\x62\x6f"
      "\x6e\x64\x00\x00\x00\x00\x0c\x00\x02\x00\x08\x00\x01\x00\x01\x34\xe7\x30"
      "\x70\x75\xa7\xcc\x6d\x2d\xba\x6e\x4d\xce\x25\xf1\x89\x68\xdd\x3d\x6f\x77"
      "\x19\x9c\xd0\x6d\x7a\x4c\xfc\xdc\x99\xdc\xfd\x5e\xc3\xf3\xe3\xd9\x8b\xe8"
      "\xa8\xba\xc2\xdc\xc4\x14\xb5\x8d\xda\x48\xb3\xea\x35\x41\x1d\x5b\x11\x2c"
      "\x26\xf3\x1b\x35\x29\x82\xf5\x5b\xe4\x46\xb3\xdd\x47\xe4\x35\x95\x42\x52"
      "\x21\x38\x28\xba\x98\xa1\xbc\x36\x32\x78\xf8\xbd\x13\xad\x74\x6b\xb8\xed"
      "\xad\x61\x91\x62\xf5\xd1\x89\x2e\x9f\xa4\x2e\x4f\xe2\xb6\x0f\x5f\xe2\xbb"
      "\x96\x3f\x08\xd6\x69\x68\x20\xad\xe9\xcf\xf2\xb2\xde\xb9\x1c\xe5\x65\x71"
      "\x68\xa9\x0d\xc5\x23\x0e\x33\xb8\xc2\x6c\xd9\x25\xc3\x13\x66\xa2\xae\x33"
      "\x9f\x12\xba\x89\x66\xbe\x14\x39\xce\xc6\x35\xb0\x8c\x0a\x97\x49\x0b\x13"
      "\x3a\x5b\x73\x60\xb5\x93\x47\x83\x3f\xc9\x5a\x7b\xf3\xdc\x9b\xc6\x47\x41"
      "\xde\x1a\x6e\x83\xc9\xbd\xfd\xfd\x0b\xaa\xbe\xc9\x81\x09\x9b\xb3\xdb\xd6"
      "\x4a\x7e\x79\x79\xcf\xb7\x93\x5a\xff\xbc\xda\x49\x19\x0b\x7e\xc9\xbc\x1e"
      "\x89\xd6\xcc\xed\xec\x20\xf9\x1b\x57\x1e\x6f\xc0\x49\xba\x82\x82\x1b\x26"
      "\xca\x4f\x85\xf4\xb0\x3f\x70\xb1\x76\xb4\x3d\xe9\x15\xbe\xc7\x6e\x40\x5b"
      "\xce\x49\xa4\xb4\x6e\xc7\x45\xb5\x1f\x36\x28\x29\x16\xb7\x7d\x7f\x91\x3a"
      "\x6a\xfd\x68\x13\xdf\x2c",
      312);
  *(uint64_t*)0x200000000008 = 0x3c;
  *(uint64_t*)0x200000000058 = 1;
  *(uint64_t*)0x200000000060 = 0;
  *(uint64_t*)0x200000000068 = 0;
  *(uint32_t*)0x200000000070 = 0;
  syscall(__NR_sendmsg, /*fd=*/r[0], /*msg=*/0x200000000040ul, /*f=*/0ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*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=*/0x200001000000ul, /*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;
}