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| author | Trond Myklebust <trond.myklebust@hammerspace.com> | 2019-03-15 12:55:59 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2019-03-15 13:06:35 -0400 |
| commit | 513149607d19bc3821386fb5ac75f8b99fd4b115 (patch) | |
| tree | 7c44799058c3331774ccfcd10243243e4b0c7477 /net | |
| parent | 9734ad57b0f1a367fd3a00d717f97f8c00d9edb7 (diff) | |
| download | linux-0-day-513149607d19bc3821386fb5ac75f8b99fd4b115.tar.gz linux-0-day-513149607d19bc3821386fb5ac75f8b99fd4b115.tar.xz | |
SUNRPC: Fix the minimal size for reply buffer allocation
We must at minimum allocate enough memory to be able to see any auth
errors in the reply from the server.
Fixes: 2c94b8eca1a26 ("SUNRPC: Use au_rslack when computing reply...")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sunrpc/clnt.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 4216fe33204a8..3108738955782 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -1730,7 +1730,12 @@ call_allocate(struct rpc_task *task) req->rq_callsize = RPC_CALLHDRSIZE + (auth->au_cslack << 1) + proc->p_arglen; req->rq_callsize <<= 2; - req->rq_rcvsize = RPC_REPHDRSIZE + auth->au_rslack + proc->p_replen; + /* + * Note: the reply buffer must at minimum allocate enough space + * for the 'struct accepted_reply' from RFC5531. + */ + req->rq_rcvsize = RPC_REPHDRSIZE + auth->au_rslack + \ + max_t(size_t, proc->p_replen, 2); req->rq_rcvsize <<= 2; status = xprt->ops->buf_alloc(task); |