Commit b291f2ed authored by Al Viro's avatar Al Viro Committed by Sasha Levin

p9_client_readdir() fix

[ Upstream commit 71d6ad08 ]

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

Cc: stable@vger.kernel.org
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
parent 98ae917f
......@@ -2093,6 +2093,10 @@ int p9_client_readdir(struct p9_fid *fid, char *data, u32 count, u64 offset)
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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