archive mirror
 help / color / mirror / Atom feed
From: Dan Carpenter <>
Subject: [bug report] cifsd: add file operations
Date: Wed, 7 Jul 2021 13:11:53 +0300	[thread overview]
Message-ID: <YOV96UFhrII4qwXg@mwanda> (raw)

Hello Namjae Jeon,

The patch f44158485826: "cifsd: add file operations" from Mar 16,
2021, leads to the following static checker warning:

	fs/ksmbd/vfs_cache.c:661 ksmbd_file_table_flush()
	warn: was expecting a 64 bit value instead of '0'

   653  int ksmbd_file_table_flush(struct ksmbd_work *work)
   654  {
   655          struct ksmbd_file       *fp = NULL;
   656          unsigned int            id;
   657          int                     ret;
   659          read_lock(&work->sess->file_table.lock);
   660          idr_for_each_entry(work->sess->file_table.idr, fp, id) {
   661                  ret = ksmbd_vfs_fsync(work, fp->volatile_id, KSMBD_NO_FID);

TBH, I'm not sure what's triggering this warning, but ksmbd_vfs_fsync()
takes a u64 and fp->volatile_id is a u32.  The ksmbd_lookup_fd_slow()
function takes a u32 so passing a u64 value seems like it would lead to
a bug.  And smb2_flush() passes a u64 so this seems buggy.

   662                  if (ret)
   663                          break;
   664          }
   665          read_unlock(&work->sess->file_table.lock);
   666          return ret;
   667  }

dan carpenter

                 reply	other threads:[~2021-07-07 10:12 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=YOV96UFhrII4qwXg@mwanda \ \ \ \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).