// https://syzkaller.appspot.com/bug?id=884d79c4a62067a8b92b466e63d792a1ade11887
// 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_pwritev2
#define __NR_pwritev2 328
#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[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  sendto$inet arguments: [
  //    fd: sock_in (resource)
  //    buf: ptr[in, buffer] {
  //      buffer: {86 89 d4 62 05 a3 41 00 ff 2b be 11 a5 ce 78 79 ed af 02 af
  //      e3 9e ad 95 91 3e 9c 4f 8c f3 14 40 00 67 69 eb df 12 cf ac ae 8e 8c
  //      03 f5 db 07 9d a7 d9} (length 0x32)
  //    }
  //    len: len = 0x32 (8 bytes)
  //    f: send_flags = 0x0 (8 bytes)
  //    addr: nil
  //    addrlen: len = 0x0 (8 bytes)
  //  ]
  memcpy((void*)0x2000000000c0,
         "\x86\x89\xd4\x62\x05\xa3\x41\x00\xff\x2b\xbe\x11\xa5\xce\x78\x79\xed"
         "\xaf\x02\xaf\xe3\x9e\xad\x95\x91\x3e\x9c\x4f\x8c\xf3\x14\x40\x00\x67"
         "\x69\xeb\xdf\x12\xcf\xac\xae\x8e\x8c\x03\xf5\xdb\x07\x9d\xa7\xd9",
         50);
  syscall(__NR_sendto, /*fd=*/(intptr_t)-1, /*buf=*/0x2000000000c0ul,
          /*len=*/0x32ul, /*f=*/0ul, /*addr=*/0ul, /*addrlen=*/0ul);
  //  openat arguments: [
  //    fd: fd_dir (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //    flags: open_flags = 0x40042 (4 bytes)
  //    mode: open_mode = 0x1 (2 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000240, "./file0\000", 8);
  syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000240ul,
          /*flags=O_NOATIME|O_CREAT|O_RDWR*/ 0x40042, /*mode=S_IXOTH*/ 1);
  //  pipe2$9p arguments: [
  //    pipefd: ptr[out, pipe_9p] {
  //      pipe_9p {
  //        rfd: rfd9p (resource)
  //        wfd: wfd9p (resource)
  //      }
  //    }
  //    flags: pipe_flags = 0x0 (8 bytes)
  //  ]
  res = syscall(__NR_pipe2, /*pipefd=*/0x2000000001c0ul, /*flags=*/0ul);
  if (res != -1) {
    r[0] = *(uint32_t*)0x2000000001c0;
    r[1] = *(uint32_t*)0x2000000001c4;
  }
  //  write$P9_RVERSION arguments: [
  //    fd: wfd9p (resource)
  //    data: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //        union ANYUNION {
  //          ANYBLOB: buffer: {15 00 00 00 65 ff ff 04 80 00 00 08 00 39 50 32
  //          30 30 30} (length 0x13)
  //        }
  //      }
  //    }
  //    size: bytesize = 0x15 (8 bytes)
  //  ]
  memcpy((void*)0x200000000280,
         "\x15\x00\x00\x00\x65\xff\xff\x04\x80\x00\x00\x08\x00\x39\x50\x32\x30"
         "\x30\x30",
         19);
  syscall(__NR_write, /*fd=*/r[1], /*data=*/0x200000000280ul, /*size=*/0x15ul);
  //  dup arguments: [
  //    oldfd: fd (resource)
  //  ]
  //  returns fd
  res = syscall(__NR_dup, /*oldfd=*/r[1]);
  if (res != -1)
    r[2] = res;
  //  write$FUSE_BMAP arguments: [
  //    fd: fd_fuse (resource)
  //    arg: ptr[in, fuse_out_t[fuse_unique, fuse_bmap_out]] {
  //      fuse_out_t[fuse_unique, fuse_bmap_out] {
  //        len: len = 0x18 (4 bytes)
  //        err: fuse_errors = 0x0 (4 bytes)
  //        unique: fuse_unique (resource)
  //        payload: fuse_bmap_out {
  //          block: int64 = 0x0 (8 bytes)
  //        }
  //      }
  //    }
  //    len: bytesize = 0x18 (8 bytes)
  //  ]
  *(uint32_t*)0x200000000100 = 0x18;
  *(uint32_t*)0x200000000104 = 0;
  *(uint64_t*)0x200000000108 = 0;
  *(uint64_t*)0x200000000110 = 0;
  syscall(__NR_write, /*fd=*/r[2], /*arg=*/0x200000000100ul, /*len=*/0x18ul);
  //  write$FUSE_NOTIFY_RETRIEVE arguments: [
  //    fd: fd_fuse (resource)
  //    arg: ptr[in, fuse_notify[FUSE_NOTIFY_RETRIEVE,
  //    fuse_notify_retrieve_out]] {
  //      fuse_notify[FUSE_NOTIFY_RETRIEVE, fuse_notify_retrieve_out] {
  //        len: len = 0x14c (4 bytes)
  //        err: const = 0x5 (4 bytes)
  //        unique: const = 0x0 (8 bytes)
  //        payload: fuse_notify_retrieve_out {
  //          notify_unique: const = 0x0 (8 bytes)
  //          nodeid: int64 = 0x0 (8 bytes)
  //          offset: int64 = 0x0 (8 bytes)
  //          size: int32 = 0x0 (4 bytes)
  //          padding: const = 0x0 (4 bytes)
  //        }
  //      }
  //    }
  //    len: bytesize = 0x137 (8 bytes)
  //  ]
  *(uint32_t*)0x2000000000c0 = 0x14c;
  *(uint32_t*)0x2000000000c4 = 5;
  *(uint64_t*)0x2000000000c8 = 0;
  *(uint64_t*)0x2000000000d0 = 0;
  *(uint64_t*)0x2000000000d8 = 0;
  *(uint64_t*)0x2000000000e0 = 0;
  *(uint32_t*)0x2000000000e8 = 0;
  *(uint32_t*)0x2000000000ec = 0;
  syscall(__NR_write, /*fd=*/r[2], /*arg=*/0x2000000000c0ul, /*len=*/0x137ul);
  //  mount$9p_fd arguments: [
  //    src: const = 0x0 (8 bytes)
  //    dst: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //    type: ptr[in, buffer] {
  //      buffer: {39 70 00} (length 0x3)
  //    }
  //    flags: mount_flags = 0x0 (8 bytes)
  //    opts: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //        union ANYUNION {
  //          ANYBLOB: buffer: {74 72 61 6e 73 3d 66 64 2c 72 66 64 6e 6f 3d}
  //          (length 0xf)
  //        }
  //        union ANYUNION {
  //          ANYRESHEX: ANYRES64 (resource)
  //        }
  //        union ANYUNION {
  //          ANYBLOB: buffer: {2c 77 66 64 6e 6f 3d} (length 0x7)
  //        }
  //        union ANYUNION {
  //          ANYRESHEX: ANYRES64 (resource)
  //        }
  //        union ANYUNION {
  //          ANYBLOB: buffer: {2c 63 61 63 68 65 3d 6d 6d 61 70} (length 0xb)
  //        }
  //      }
  //    }
  //  ]
  memcpy((void*)0x200000000000, "./file0\000", 8);
  memcpy((void*)0x200000000040, "9p\000", 3);
  memcpy((void*)0x2000000003c0, "trans=fd,rfdno=", 15);
  sprintf((char*)0x2000000003cf, "0x%016llx", (long long)r[0]);
  memcpy((void*)0x2000000003e1, ",wfdno=", 7);
  sprintf((char*)0x2000000003e8, "0x%016llx", (long long)r[2]);
  memcpy((void*)0x2000000003fa, ",cache=mmap", 11);
  syscall(__NR_mount, /*src=*/0ul, /*dst=*/0x200000000000ul,
          /*type=*/0x200000000040ul, /*flags=*/0ul, /*opts=*/0x2000000003c0ul);
  //  chmod arguments: [
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //    mode: open_mode = 0x0 (8 bytes)
  //  ]
  memcpy((void*)0x200000000140, "./file0\000", 8);
  syscall(__NR_chmod, /*file=*/0x200000000140ul, /*mode=*/0ul);
  //  creat arguments: [
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //    mode: open_mode = 0x0 (8 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000300, "./file0\000", 8);
  res = syscall(__NR_creat, /*file=*/0x200000000300ul, /*mode=*/0ul);
  if (res != -1)
    r[3] = res;
  //  pwritev2 arguments: [
  //    fd: fd (resource)
  //    vec: ptr[in, array[iovec[in, array[int8]]]] {
  //      array[iovec[in, array[int8]]] {
  //        iovec[in, array[int8]] {
  //          addr: ptr[in, buffer] {
  //            buffer: {01} (length 0x1)
  //          }
  //          len: len = 0x1 (8 bytes)
  //        }
  //      }
  //    }
  //    vlen: len = 0x1 (8 bytes)
  //    off_low: int32 = 0x8 (4 bytes)
  //    off_high: int32 = 0x6 (4 bytes)
  //    flags: rwf_flags = 0x0 (8 bytes)
  //  ]
  *(uint64_t*)0x200000000200 = 0x200000000340;
  memset((void*)0x200000000340, 1, 1);
  *(uint64_t*)0x200000000208 = 1;
  syscall(__NR_pwritev2, /*fd=*/r[3], /*vec=*/0x200000000200ul, /*vlen=*/1ul,
          /*off_low=*/8, /*off_high=*/6, /*flags=*/0ul);
  //  write$FUSE_POLL arguments: [
  //    fd: fd_fuse (resource)
  //    arg: ptr[in, fuse_out_t[fuse_unique, fuse_poll_out]] {
  //      fuse_out_t[fuse_unique, fuse_poll_out] {
  //        len: len = 0x18 (4 bytes)
  //        err: fuse_errors = 0xfffffffffffffff5 (4 bytes)
  //        unique: fuse_unique (resource)
  //        payload: fuse_poll_out {
  //          revents: int32 = 0x1 (4 bytes)
  //          padding: const = 0x0 (4 bytes)
  //        }
  //      }
  //    }
  //    len: bytesize = 0x18 (8 bytes)
  //  ]
  *(uint32_t*)0x200000000380 = 0x18;
  *(uint32_t*)0x200000000384 = 0xfffffff5;
  *(uint64_t*)0x200000000388 = 0;
  *(uint32_t*)0x200000000390 = 1;
  *(uint32_t*)0x200000000394 = 0;
  syscall(__NR_write, /*fd=*/r[3], /*arg=*/0x200000000380ul, /*len=*/0x18ul);
}
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;
}