public inbox for linux-nfs@vger.kernel.org
 help / color / mirror / Atom feed
From: Jeff Layton <jlayton@kernel.org>
To: Chuck Lever <chuck.lever@oracle.com>, Neil Brown <neilb@suse.de>,
	 Olga Kornievskaia <kolga@netapp.com>,
	Dai Ngo <Dai.Ngo@oracle.com>,  Tom Talpey <tom@talpey.com>
Cc: Youzhong Yang <youzhong@gmail.com>,
	linux-nfs@vger.kernel.org,  linux-kernel@vger.kernel.org,
	Jeff Layton <jlayton@kernel.org>
Subject: [PATCH 2/3] nfsd: fix refcount leak when file is unhashed after being found
Date: Wed, 10 Jul 2024 09:05:32 -0400	[thread overview]
Message-ID: <20240710-nfsd-next-v1-2-21fca616ac53@kernel.org> (raw)
In-Reply-To: <20240710-nfsd-next-v1-0-21fca616ac53@kernel.org>

If we wait_for_construction and find that the file is no longer hashed,
and we're going to retry the open, the old nfsd_file reference is
currently leaked. Put the reference before retrying.

Fixes: c6593366c0bf ("nfsd: don't kill nfsd_files because of lease break error")
Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/nfsd/filecache.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c
index 4fb5e8546831..52063f2cf0df 100644
--- a/fs/nfsd/filecache.c
+++ b/fs/nfsd/filecache.c
@@ -1056,6 +1056,7 @@ nfsd_file_do_acquire(struct svc_rqst *rqstp, struct svc_fh *fhp,
 			status = nfserr_jukebox;
 			goto construction_err;
 		}
+		nfsd_file_put(nf);
 		open_retry = false;
 		fh_put(fhp);
 		goto retry;

-- 
2.45.2


  parent reply	other threads:[~2024-07-10 13:06 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-07-10 13:05 [PATCH 0/3] nfsd: plug some filecache refcount leaks Jeff Layton
2024-07-10 13:05 ` [PATCH 1/3] nfsd: fix refcount leak when failing to hash nfsd_file Jeff Layton
2024-07-11 17:05   ` Youzhong Yang
2024-07-11 17:53     ` Jeff Layton
2024-07-11 18:16       ` Chuck Lever III
2024-07-11 18:20         ` Jeff Layton
2024-07-11 18:27           ` Chuck Lever III
2024-07-10 13:05 ` Jeff Layton [this message]
2024-07-10 13:05 ` [PATCH 3/3] nfsd: count nfsd_file allocations Jeff Layton
2024-07-10 14:35 ` [PATCH 0/3] nfsd: plug some filecache refcount leaks Chuck Lever
2024-07-10 14:39   ` Jeff Layton

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:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

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

  git send-email \
    --in-reply-to=20240710-nfsd-next-v1-2-21fca616ac53@kernel.org \
    --to=jlayton@kernel.org \
    --cc=Dai.Ngo@oracle.com \
    --cc=chuck.lever@oracle.com \
    --cc=kolga@netapp.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-nfs@vger.kernel.org \
    --cc=neilb@suse.de \
    --cc=tom@talpey.com \
    --cc=youzhong@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* 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