// https://syzkaller.appspot.com/bug?id=1f6c88cf262094cc3000762d0235183c034e3b77
// 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>

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[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  openat$fb0 arguments: [
  //    fd: const = 0xffffffffffffff9c (8 bytes)
  //    file: ptr[in, buffer] {
  //      buffer: {2f 64 65 76 2f 66 62 30 00} (length 0x9)
  //    }
  //    flags: open_flags = 0x0 (4 bytes)
  //    mode: const = 0x0 (2 bytes)
  //  ]
  //  returns fd_fb
  memcpy((void*)0x2000000002c0, "/dev/fb0\000", 9);
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul,
                /*file=*/0x2000000002c0ul, /*flags=*/0, /*mode=*/0);
  if (res != -1)
    r[0] = res;
  //  ioctl$FBIOPUT_VSCREENINFO arguments: [
  //    fd: fd_fb (resource)
  //    cmd: const = 0x4601 (4 bytes)
  //    arg: ptr[in, fb_var_screeninfo] {
  //      fb_var_screeninfo {
  //        xres: fb_xres = 0x36a (4 bytes)
  //        yres: fb_yres = 0x78 (4 bytes)
  //        xres_virtual: fb_xres = 0x300 (4 bytes)
  //        yres_virtual: fb_yres = 0x0 (4 bytes)
  //        xoffset: int32 = 0xa (4 bytes)
  //        yoffset: int32 = 0x0 (4 bytes)
  //        bits_per_pixel: fb_bpp = 0x0 (4 bytes)
  //        grayscale: int32 = 0x0 (4 bytes)
  //        red: fb_bitfield {
  //          offset: int32 = 0x0 (4 bytes)
  //          length: int32 = 0x0 (4 bytes)
  //          msb_right: int32 = 0x0 (4 bytes)
  //        }
  //        green: fb_bitfield {
  //          offset: int32 = 0x0 (4 bytes)
  //          length: int32 = 0x0 (4 bytes)
  //          msb_right: int32 = 0x0 (4 bytes)
  //        }
  //        blue: fb_bitfield {
  //          offset: int32 = 0x0 (4 bytes)
  //          length: int32 = 0x0 (4 bytes)
  //          msb_right: int32 = 0x0 (4 bytes)
  //        }
  //        transp: fb_bitfield {
  //          offset: int32 = 0x0 (4 bytes)
  //          length: int32 = 0x0 (4 bytes)
  //          msb_right: int32 = 0x0 (4 bytes)
  //        }
  //        nonstd: fb_nonstd = 0x0 (4 bytes)
  //        activate: fb_activate = 0x40 (4 bytes)
  //        height: int32 = 0x0 (4 bytes)
  //        width: int32 = 0x1 (4 bytes)
  //        accel_flags: fb_accel_flags = 0x1 (4 bytes)
  //        pixclock: int32 = 0x4 (4 bytes)
  //        left_margin: int32 = 0x9f6 (4 bytes)
  //        right_margin: int32 = 0x3 (4 bytes)
  //        upper_margin: int32 = 0x1ff (4 bytes)
  //        lower_margin: int32 = 0x803d (4 bytes)
  //        hsync_len: int32 = 0x1 (4 bytes)
  //        vsync_len: int32 = 0x7 (4 bytes)
  //        sync: fb_sync = 0x5f (4 bytes)
  //        vmode: fb_mode = 0x202 (4 bytes)
  //        rotate: fb_rotate = 0x1 (4 bytes)
  //        colorspace: v4l2_colorspace = 0xc (4 bytes)
  //        reserved: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00}
  //        (length 0x10)
  //      }
  //    }
  //  ]
  *(uint32_t*)0x200000000380 = 0x36a;
  *(uint32_t*)0x200000000384 = 0x78;
  *(uint32_t*)0x200000000388 = 0x300;
  *(uint32_t*)0x20000000038c = 0;
  *(uint32_t*)0x200000000390 = 0xa;
  *(uint32_t*)0x200000000394 = 0;
  *(uint32_t*)0x200000000398 = 0;
  *(uint32_t*)0x20000000039c = 0;
  *(uint32_t*)0x2000000003a0 = 0;
  *(uint32_t*)0x2000000003a4 = 0;
  *(uint32_t*)0x2000000003a8 = 0;
  *(uint32_t*)0x2000000003ac = 0;
  *(uint32_t*)0x2000000003b0 = 0;
  *(uint32_t*)0x2000000003b4 = 0;
  *(uint32_t*)0x2000000003b8 = 0;
  *(uint32_t*)0x2000000003bc = 0;
  *(uint32_t*)0x2000000003c0 = 0;
  *(uint32_t*)0x2000000003c4 = 0;
  *(uint32_t*)0x2000000003c8 = 0;
  *(uint32_t*)0x2000000003cc = 0;
  *(uint32_t*)0x2000000003d0 = 0;
  *(uint32_t*)0x2000000003d4 = 0x40;
  *(uint32_t*)0x2000000003d8 = 0;
  *(uint32_t*)0x2000000003dc = 1;
  *(uint32_t*)0x2000000003e0 = 1;
  *(uint32_t*)0x2000000003e4 = 4;
  *(uint32_t*)0x2000000003e8 = 0x9f6;
  *(uint32_t*)0x2000000003ec = 3;
  *(uint32_t*)0x2000000003f0 = 0x1ff;
  *(uint32_t*)0x2000000003f4 = 0x803d;
  *(uint32_t*)0x2000000003f8 = 1;
  *(uint32_t*)0x2000000003fc = 7;
  *(uint32_t*)0x200000000400 = 0x5f;
  *(uint32_t*)0x200000000404 = 0x202;
  *(uint32_t*)0x200000000408 = 1;
  *(uint32_t*)0x20000000040c = 0xc;
  memset((void*)0x200000000410, 0, 16);
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4601, /*arg=*/0x200000000380ul);
  //  mkdirat arguments: [
  //    fd: fd_dir (resource)
  //    path: ptr[in, buffer] {
  //      buffer: {2e 2f 73 79 73 00} (length 0x6)
  //    }
  //    mode: open_mode = 0x1ff (8 bytes)
  //  ]
  memcpy((void*)0x200000000180, "./sys\000", 6);
  syscall(
      __NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x200000000180ul,
      /*mode=S_IXOTH|S_IWOTH|S_IROTH|S_IXGRP|S_IWGRP|S_IRGRP|S_IXUSR|S_IWUSR|0x100*/
      0x1fful);
  //  mount arguments: [
  //    src: nil
  //    dst: ptr[in, buffer] {
  //      buffer: {2e 2f 73 79 73 00} (length 0x6)
  //    }
  //    type: ptr[in, buffer] {
  //      buffer: {73 79 73 66 73 00} (length 0x6)
  //    }
  //    flags: mount_flags = 0x0 (8 bytes)
  //    data: nil
  //  ]
  memcpy((void*)0x2000000001c0, "./sys\000", 6);
  memcpy((void*)0x200000000200, "sysfs\000", 6);
  syscall(__NR_mount, /*src=*/0ul, /*dst=*/0x2000000001c0ul,
          /*type=*/0x200000000200ul, /*flags=*/0ul, /*data=*/0ul);
  //  openat arguments: [
  //    fd: fd_dir (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 73 79 73 2f 63 6c 61 73 73 2f 76 74 63 6f 6e 73 6f 6c
  //      65 2f 76 74 63 6f 6e 31 2f 62 69 6e 64 00} (length 0x22)
  //    }
  //    flags: open_flags = 0x1 (4 bytes)
  //    mode: open_mode = 0x0 (2 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000180, "./sys/class/vtconsole/vtcon1/bind\000", 34);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000180ul,
                /*flags=O_WRONLY*/ 1, /*mode=*/0);
  if (res != -1)
    r[1] = res;
  //  write$FUSE_INTERRUPT arguments: [
  //    fd: fd_fuse (resource)
  //    arg: ptr[in, fuse_out_t[fuse_unique, void]] {
  //      fuse_out_t[fuse_unique, void] {
  //        len: len = 0x10 (4 bytes)
  //        err: fuse_errors = 0xffffffffffffffda (4 bytes)
  //        unique: fuse_unique (resource)
  //        payload: buffer: {} (length 0x0)
  //      }
  //    }
  //    len: bytesize = 0x10 (8 bytes)
  //  ]
  *(uint32_t*)0x200000002bc0 = 0x10;
  *(uint32_t*)0x200000002bc4 = 0xffffffda;
  *(uint64_t*)0x200000002bc8 = 0;
  syscall(__NR_write, /*fd=*/r[1], /*arg=*/0x200000002bc0ul, /*len=*/0x10ul);
  //  write arguments: [
  //    fd: fd (resource)
  //    buf: ptr[in, buffer] {
  //      buffer: {31} (length 0x1)
  //    }
  //    count: len = 0x1 (8 bytes)
  //  ]
  memset((void*)0x200000000280, 49, 1);
  syscall(__NR_write, /*fd=*/r[1], /*buf=*/0x200000000280ul, /*count=*/1ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*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=*/0x200001000000ul, /*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;
}