diff --git a/fs/eventpoll.c b/fs/eventpoll.c index f2609ff320b..9797ab271b6 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -1591,9 +1591,11 @@ static int ep_loop_check_proc(void *priv, void *cookie, int call_nests) * not already there, and calling reverse_path_check() * during ep_insert(). */ - if (list_empty(&epi->ffd.file->f_tfile_llink)) + if (list_empty(&epi->ffd.file->f_tfile_llink)) { + get_file(epi->ffd.file); list_add(&epi->ffd.file->f_tfile_llink, &tfile_check_list); + } } } mutex_unlock(&ep->mtx); @@ -1637,6 +1639,7 @@ static void clear_tfile_check_list(void) file = list_first_entry(&tfile_check_list, struct file, f_tfile_llink); list_del_init(&file->f_tfile_llink); + fput(file); } INIT_LIST_HEAD(&tfile_check_list); } @@ -1773,8 +1776,10 @@ SYSCALL_DEFINE4(epoll_ctl, int, epfd, int, op, int, fd, clear_tfile_check_list(); goto error_tgt_fput; } - } else + } else { + get_file(tfile); list_add(&tfile->f_tfile_llink, &tfile_check_list); + } } mutex_lock_nested(&ep->mtx, 0);