// https://syzkaller.appspot.com/bug?id=e08ee8e595bbb188969072c7c4264d8195ce5b83
// 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 long syz_open_dev(volatile long a0, volatile long a1, volatile long a2)
{
  if (a0 == 0xc || a0 == 0xb) {
    char buf[128];
    sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1,
            (uint8_t)a2);
    return open(buf, O_RDWR, 0);
  } else {
    unsigned long nb = a1;
    char buf[1024];
    char* hash;
    strncpy(buf, (char*)a0, sizeof(buf) - 1);
    buf[sizeof(buf) - 1] = 0;
    while ((hash = strchr(buf, '#'))) {
      *hash = '0' + (char)(nb % 10);
      nb /= 10;
    }
    return open(buf, a2 & ~O_CREAT, 0);
  }
}

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");
}

#define KMEMLEAK_FILE "/sys/kernel/debug/kmemleak"

static const char* setup_leak()
{
  if (!write_file(KMEMLEAK_FILE, "scan=off")) {
    if (errno == EBUSY)
      return "KMEMLEAK disabled: increase CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE"
             " or unset CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF";
    return "failed to write(kmemleak, \"scan=off\")";
  }
  if (!write_file(KMEMLEAK_FILE, "scan"))
    return "failed to write(kmemleak, \"scan\")";
  sleep(5);
  if (!write_file(KMEMLEAK_FILE, "scan"))
    return "failed to write(kmemleak, \"scan\")";
  if (!write_file(KMEMLEAK_FILE, "clear"))
    return "failed to write(kmemleak, \"clear\")";
  return NULL;
}

static void check_leaks(void)
{
  int fd = open(KMEMLEAK_FILE, O_RDWR);
  if (fd == -1)
    exit(1);
  uint64_t start = current_time_ms();
  if (write(fd, "scan", 4) != 4)
    exit(1);
  sleep(1);
  while (current_time_ms() - start < 4 * 1000)
    sleep(1);
  if (write(fd, "scan", 4) != 4)
    exit(1);
  static char buf[128 << 10];
  ssize_t n = read(fd, buf, sizeof(buf) - 1);
  if (n < 0)
    exit(1);
  int nleaks = 0;
  if (n != 0) {
    sleep(1);
    if (write(fd, "scan", 4) != 4)
      exit(1);
    if (lseek(fd, 0, SEEK_SET) < 0)
      exit(1);
    n = read(fd, buf, sizeof(buf) - 1);
    if (n < 0)
      exit(1);
    buf[n] = 0;
    char* pos = buf;
    char* end = buf + n;
    while (pos < end) {
      char* next = strstr(pos + 1, "unreferenced object");
      if (!next)
        next = end;
      char prev = *next;
      *next = 0;
      fprintf(stderr, "BUG: memory leak\n%s\n", pos);
      *next = prev;
      pos = next;
      nleaks++;
    }
  }
  if (write(fd, "clear", 5) != 5)
    exit(1);
  close(fd);
  if (nleaks)
    exit(1);
}

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;
    }
    check_leaks();
  }
}

uint64_t r[4] = {0xffffffffffffffff, 0x0, 0x0, 0x0};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  ioctl$DRM_IOCTL_MODE_GETRESOURCES arguments: [
  //    fd: fd_dri (resource)
  //    cmd: const = 0xc04064a0 (4 bytes)
  //    arg: ptr[inout, drm_mode_card_res] {
  //      drm_mode_card_res {
  //        fbid: ptr[out, array[drm_fb_id]] {
  //          array[drm_fb_id] {
  //          }
  //        }
  //        crtcid: nil
  //        connid: nil
  //        encid: nil
  //        nfbid: len = 0x0 (4 bytes)
  //        ncrtcid: len = 0x0 (4 bytes)
  //        nconnid: len = 0x0 (4 bytes)
  //        nencid: len = 0x0 (4 bytes)
  //        maxw: const = 0x0 (4 bytes)
  //        maxh: const = 0x0 (4 bytes)
  //        minw: const = 0x0 (4 bytes)
  //        minh: const = 0x0 (4 bytes)
  //      }
  //    }
  //  ]
  *(uint64_t*)0x200000000340 = 0x200000000200;
  *(uint64_t*)0x200000000348 = 0;
  *(uint64_t*)0x200000000350 = 0;
  *(uint64_t*)0x200000000358 = 0;
  *(uint32_t*)0x200000000360 = 0;
  *(uint32_t*)0x200000000364 = 0;
  *(uint32_t*)0x200000000368 = 0;
  *(uint32_t*)0x20000000036c = 0;
  *(uint32_t*)0x200000000370 = 0;
  *(uint32_t*)0x200000000374 = 0;
  *(uint32_t*)0x200000000378 = 0;
  *(uint32_t*)0x20000000037c = 0;
  syscall(__NR_ioctl, /*fd=*/(intptr_t)-1, /*cmd=*/0xc04064a0,
          /*arg=*/0x200000000340ul);
  //  syz_open_dev$dri arguments: [
  //    dev: ptr[in, buffer] {
  //      buffer: {2f 64 65 76 2f 64 72 69 2f 63 61 72 64 23 00} (length 0xf)
  //    }
  //    id: intptr = 0x1 (8 bytes)
  //    flags: open_flags = 0x0 (8 bytes)
  //  ]
  //  returns fd_dri
  memcpy((void*)0x200000000080, "/dev/dri/card#\000", 15);
  res = -1;
  res = syz_open_dev(/*dev=*/0x200000000080, /*id=*/1, /*flags=*/0);
  if (res != -1)
    r[0] = res;
  //  ioctl$DRM_IOCTL_SET_CLIENT_CAP arguments: [
  //    fd: fd_dri (resource)
  //    cmd: const = 0x4010640d (4 bytes)
  //    arg: ptr[in, drm_get_cap] {
  //      drm_get_cap {
  //        cap: drm_cap = 0x3 (8 bytes)
  //        val: const = 0x2 (8 bytes)
  //      }
  //    }
  //  ]
  *(uint64_t*)0x200000000000 = 3;
  *(uint64_t*)0x200000000008 = 2;
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4010640d,
          /*arg=*/0x200000000000ul);
  //  prlimit64 arguments: [
  //    pid: pid (resource)
  //    res: rlimit_type = 0x7 (8 bytes)
  //    new: ptr[in, rlimit] {
  //      rlimit {
  //        soft: intptr = 0x0 (8 bytes)
  //        hard: intptr = 0x100 (8 bytes)
  //      }
  //    }
  //    old: nil
  //  ]
  *(uint64_t*)0x200000000040 = 0;
  *(uint64_t*)0x200000000048 = 0x100;
  syscall(__NR_prlimit64, /*pid=*/0, /*res=RLIMIT_NOFILE*/ 7ul,
          /*new=*/0x200000000040ul, /*old=*/0ul);
  //  ioctl$DRM_IOCTL_MODE_GETPLANERESOURCES arguments: [
  //    fd: fd_dri (resource)
  //    cmd: const = 0xc01064b5 (4 bytes)
  //    arg: ptr[inout, drm_mode_get_plane_res] {
  //      drm_mode_get_plane_res {
  //        ids: ptr[out, array[drm_plane_id]] {
  //          array[drm_plane_id] {
  //            drm_plane_id (resource)
  //          }
  //        }
  //        cnt: len = 0x1 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //  ]
  *(uint64_t*)0x200000000140 = 0x200000000100;
  *(uint32_t*)0x200000000148 = 1;
  res = syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0xc01064b5,
                /*arg=*/0x200000000140ul);
  if (res != -1)
    r[1] = *(uint32_t*)0x200000000100;
  //  ioctl$DRM_IOCTL_MODE_GETPLANE arguments: [
  //    fd: fd_dri (resource)
  //    cmd: const = 0xc02064b6 (4 bytes)
  //    arg: ptr[inout, drm_mode_get_plane] {
  //      drm_mode_get_plane {
  //        plane_id: drm_plane_id (resource)
  //        crtc_id: drm_crtc_id (resource)
  //        fb_id: drm_fb_id (resource)
  //        possible_crtcs: const = 0x0 (4 bytes)
  //        gamma_size: const = 0x0 (4 bytes)
  //        count_format_types: len = 0x0 (4 bytes)
  //        format_type_ptr: nil
  //      }
  //    }
  //  ]
  *(uint32_t*)0x2000000001c0 = r[1];
  *(uint32_t*)0x2000000001c4 = 0;
  *(uint32_t*)0x2000000001c8 = 0;
  *(uint32_t*)0x2000000001cc = 0;
  *(uint32_t*)0x2000000001d0 = 0;
  *(uint32_t*)0x2000000001d4 = 0;
  *(uint64_t*)0x2000000001d8 = 0;
  res = syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0xc02064b6,
                /*arg=*/0x2000000001c0ul);
  if (res != -1)
    r[2] = *(uint32_t*)0x2000000001c4;
  //  ioctl$DRM_IOCTL_MODE_GET_LEASE arguments: [
  //    fd: fd_dri (resource)
  //    cmd: const = 0xc01064c8 (4 bytes)
  //    arg: ptr[inout, drm_mode_get_lease] {
  //      drm_mode_get_lease {
  //        count_objects: len = 0x1 (4 bytes)
  //        pad: const = 0x0 (4 bytes)
  //        objects_ptr: ptr[out, array[drm_obj_id]] {
  //          array[drm_obj_id] {
  //            drm_obj_id (resource)
  //          }
  //        }
  //      }
  //    }
  //  ]
  *(uint32_t*)0x200000000280 = 1;
  *(uint32_t*)0x200000000284 = 0;
  *(uint64_t*)0x200000000288 = 0x200000000200;
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0xc01064c8,
          /*arg=*/0x200000000280ul);
  //  ioctl$DRM_IOCTL_MODE_OBJ_GETPROPERTIES arguments: [
  //    fd: fd_dri (resource)
  //    cmd: const = 0xc02064b9 (4 bytes)
  //    arg: ptr[inout, drm_mode_obj_get_properties] {
  //      drm_mode_obj_get_properties {
  //        props_ptr: ptr[out, array[drm_prop_id]] {
  //          array[drm_prop_id] {
  //            drm_prop_id (resource)
  //            drm_prop_id (resource)
  //            drm_prop_id (resource)
  //          }
  //        }
  //        prop_values_ptr: ptr[out, array[int64]] {
  //          array[int64] {
  //          }
  //        }
  //        count_props: len = 0x3 (4 bytes)
  //        obj_id: drm_obj_id (resource)
  //        obj_type: drm_obj_type = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //  ]
  *(uint64_t*)0x2000000002c0 = 0x200000000240;
  *(uint64_t*)0x2000000002c8 = 0x200000000040;
  *(uint32_t*)0x2000000002d0 = 3;
  *(uint32_t*)0x2000000002d4 = r[2];
  *(uint32_t*)0x2000000002d8 = 0;
  res = syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0xc02064b9,
                /*arg=*/0x2000000002c0ul);
  if (res != -1)
    r[3] = *(uint32_t*)0x200000000248;
  //  ioctl$DRM_IOCTL_MODE_ATOMIC arguments: [
  //    fd: fd_dri (resource)
  //    cmd: const = 0xc03864bc (4 bytes)
  //    arg: ptr[in, drm_mode_atomic] {
  //      drm_mode_atomic {
  //        flags: drm_mode_atomic_flags = 0x200 (4 bytes)
  //        count_objs: len = 0x1 (4 bytes)
  //        objs_ptr: ptr[in, array[drm_obj_id]] {
  //          array[drm_obj_id] {
  //            drm_obj_id (resource)
  //          }
  //        }
  //        count_props_ptr: ptr[in, array[int32]] {
  //          array[int32] {
  //          }
  //        }
  //        props_ptr: ptr[in, array[drm_prop_id]] {
  //          array[drm_prop_id] {
  //            drm_prop_id (resource)
  //          }
  //        }
  //        prop_values_ptr: ptr[in, array[int64]] {
  //          array[int64] {
  //          }
  //        }
  //        reserved: const = 0x0 (8 bytes)
  //        user_data: int64 = 0x0 (8 bytes)
  //      }
  //    }
  //  ]
  *(uint32_t*)0x200000000380 = 0x200;
  *(uint32_t*)0x200000000384 = 1;
  *(uint64_t*)0x200000000388 = 0x200000000440;
  *(uint32_t*)0x200000000440 = r[2];
  *(uint64_t*)0x200000000390 = 0x200000000200;
  *(uint64_t*)0x200000000398 = 0x200000000300;
  *(uint32_t*)0x200000000300 = r[3];
  *(uint64_t*)0x2000000003a0 = 0x200000000340;
  *(uint64_t*)0x2000000003a8 = 0;
  *(uint64_t*)0x2000000003b0 = 0;
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0xc03864bc,
          /*arg=*/0x200000000380ul);
}
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;
  if ((reason = setup_leak()))
    printf("the reproducer may not work as expected: leak checking setup "
           "failed: %s\n",
           reason);
  loop();
  return 0;
}