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    Subject[PATCH 3.16 154/178] p9_client_readdir() fix
    3.16.46-rc1 review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Al Viro <viro@zeniv.linux.org.uk>

    commit 71d6ad08379304128e4bdfaf0b4185d54375423e upstream.

    Don't assume that server is sane and won't return more data than
    asked for.

    Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
    Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
    ---
    net/9p/client.c | 4 ++++
    1 file changed, 4 insertions(+)

    --- a/net/9p/client.c
    +++ b/net/9p/client.c
    @@ -2107,6 +2107,10 @@ int p9_client_readdir(struct p9_fid *fid
    trace_9p_protocol_dump(clnt, req->rc);
    goto free_and_error;
    }
    + if (rsize < count) {
    + pr_err("bogus RREADDIR count (%d > %d)\n", count, rsize);
    + count = rsize;
    + }

    p9_debug(P9_DEBUG_9P, "<<< RREADDIR count %d\n", count);

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