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| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-02-11 17:27:55 -0500 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-02-11 19:02:51 -0500 |
| commit | d8ba1f971497c19cf80da1ea5391a46a5f9fbd41 (patch) | |
| tree | 42028cf8afc20ecb15740a60300b4b5274cc4b8a /fs/nfs/callback_xdr.c | |
| parent | c627d31ba0696cbd829437af2be2f2dee3546b1e (diff) | |
| download | lwn-d8ba1f971497c19cf80da1ea5391a46a5f9fbd41.tar.gz lwn-d8ba1f971497c19cf80da1ea5391a46a5f9fbd41.zip | |
NFSv4.1: Fix a kfree() of uninitialised pointers in decode_cb_sequence_args
If the call to decode_rc_list() fails due to a memory allocation error,
then we need to truncate the array size to ensure that we only call
kfree() on those pointer that were allocated.
Reported-by: David Ramos <daramos@stanford.edu>
Fixes: 4aece6a19cf7f ("nfs41: cb_sequence xdr implementation")
Cc: stable@vger.kernel.org
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/callback_xdr.c')
| -rw-r--r-- | fs/nfs/callback_xdr.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index f4ccfe6521ec..02f8d09e119f 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -464,8 +464,10 @@ static __be32 decode_cb_sequence_args(struct svc_rqst *rqstp, for (i = 0; i < args->csa_nrclists; i++) { status = decode_rc_list(xdr, &args->csa_rclists[i]); - if (status) + if (status) { + args->csa_nrclists = i; goto out_free; + } } } status = 0; |