linux-kernel - Re: [105/105] nfsd4: fix oops on lock failure

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Date:	Mon, 18 Apr 2011 11:32:38 -0400
From:	"J. Bruce Fields" <bfields@...hat.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>,
	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org,
	stable@...nel.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Neil Brown <neilb@...e.de>,
	linux-nfs@...r.kernel.org
Subject: Re: [105/105] nfsd4: fix oops on lock failure

On Sun, Apr 17, 2011 at 09:10:12AM -0700, Linus Torvalds wrote:
> On Sun, Apr 17, 2011 at 8:03 AM, OGAWA Hirofumi
> <hirofumi@...l.parknet.co.jp> wrote:
> >
> > I'm looking filp leak on recent kernel. Well, anyway,

Does this fix it?

--b.

commit 5152c8a947359758862d4631863e68e83ec01048
Author: J. Bruce Fields <bfields@...hat.com>
Date:   Fri Apr 15 18:08:26 2011 -0400

    nfsd4: fix struct file leak on delegation
    
    Introduced by acfdf5c383b38f7f4dddae41b97c97f1ae058f49.
    
    Cc: stable@...nel.org
    Reported-by: Gerhard Heift <ml-nfs-linux-20110412-ef47@...ift.de>
    Signed-off-by: J. Bruce Fields <bfields@...hat.com>

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index aa309aa..c79a983 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -258,6 +258,7 @@ static void nfs4_put_deleg_lease(struct nfs4_file *fp)
 	if (atomic_dec_and_test(&fp->fi_delegees)) {
 		vfs_setlease(fp->fi_deleg_file, F_UNLCK, &fp->fi_lease);
 		fp->fi_lease = NULL;
+		fput(fp->fi_deleg_file);
 		fp->fi_deleg_file = NULL;
 	}
 }
--
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