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| author | Chuck Lever <chuck.lever@oracle.com> | 2018-11-30 15:39:57 -0500 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2018-12-02 09:43:56 -0500 |
| commit | 8dae5398ab1ac107b1517e8195ed043d5f422bd0 (patch) | |
| tree | 4a9fd027ef08f3903bf31a47dc16b0ae3e59a4e1 | |
| parent | 9bd11523dc1b9293d1eee2c0b8cfc986a312bbce (diff) | |
| download | linux-8dae5398ab1ac107b1517e8195ed043d5f422bd0.tar.bz2 | |
SUNRPC: Fix leak of krb5p encode pages
call_encode can be invoked more than once per RPC call. Ensure that
each call to gss_wrap_req_priv does not overwrite pointers to
previously allocated memory.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: stable@kernel.org
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
| -rw-r--r-- | net/sunrpc/auth_gss/auth_gss.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/sunrpc/auth_gss/auth_gss.c b/net/sunrpc/auth_gss/auth_gss.c index 5d3f252659f1..ba765473d1f0 100644 --- a/net/sunrpc/auth_gss/auth_gss.c +++ b/net/sunrpc/auth_gss/auth_gss.c @@ -1791,6 +1791,7 @@ priv_release_snd_buf(struct rpc_rqst *rqstp) for (i=0; i < rqstp->rq_enc_pages_num; i++) __free_page(rqstp->rq_enc_pages[i]); kfree(rqstp->rq_enc_pages); + rqstp->rq_release_snd_buf = NULL; } static int @@ -1799,6 +1800,9 @@ alloc_enc_pages(struct rpc_rqst *rqstp) struct xdr_buf *snd_buf = &rqstp->rq_snd_buf; int first, last, i; + if (rqstp->rq_release_snd_buf) + rqstp->rq_release_snd_buf(rqstp); + if (snd_buf->page_len == 0) { rqstp->rq_enc_pages_num = 0; return 0; |