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| author | Benjamin Coddington <bcodding@redhat.com> | 2016-02-17 10:41:41 -0500 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-03-07 12:27:25 -0500 |
| commit | 038d8248fc62423b16810878f14d59070a0076cb (patch) | |
| tree | 7004e19345e01e001a167a124f5475455d599435 /fs | |
| parent | 40b43e3cc942d3149c4a6ef4692703ee64e8ba62 (diff) | |
| download | lwn-038d8248fc62423b16810878f14d59070a0076cb.tar.gz lwn-038d8248fc62423b16810878f14d59070a0076cb.zip | |
NFSv4: Fix a dentry leak on alias use
[ Upstream commit d9dfd8d741683347ee159d25f5b50c346a0df557 ]
In the case where d_add_unique() finds an appropriate alias to use it will
have already incremented the reference count. An additional dget() to swap
the open context's dentry is unnecessary and will leak a reference.
Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Fixes: 275bb307865a3 ("NFSv4: Move dentry instantiation into the NFSv4-...")
Cc: stable@vger.kernel.org # 3.10+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfs/nfs4proc.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 2c4f41c34366..84706204cc33 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2331,9 +2331,9 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, dentry = d_add_unique(dentry, igrab(state->inode)); if (dentry == NULL) { dentry = opendata->dentry; - } else if (dentry != ctx->dentry) { + } else { dput(ctx->dentry); - ctx->dentry = dget(dentry); + ctx->dentry = dentry; } nfs_set_verifier(dentry, nfs_save_change_attribute(d_inode(opendata->dir))); |