releases/4.19.31/9p-net-fix-memory-leak-in-p9_client_create.patch

   1 From bb06c388fa20ae24cfe80c52488de718a7e3a53f Mon Sep 17 00:00:00 2001
   2 From: zhengbin <zhengbin13@huawei.com>
   3 Date: Wed, 13 Mar 2019 16:01:37 +0800
   4 Subject: 9p/net: fix memory leak in p9_client_create
   5
   6 From: zhengbin <zhengbin13@huawei.com>
   7
   8 commit bb06c388fa20ae24cfe80c52488de718a7e3a53f upstream.
   9
  10 If msize is less than 4096, we should close and put trans, destroy
  11 tagpool, not just free client. This patch fixes that.
  12
  13 Link: http://lkml.kernel.org/m/1552464097-142659-1-git-send-email-zhengbin13@huawei.com
  14 Cc: stable@vger.kernel.org
  15 Fixes: 574d356b7a02 ("9p/net: put a lower bound on msize")
  16 Reported-by: Hulk Robot <hulkci@huawei.com>
  17 Signed-off-by: zhengbin <zhengbin13@huawei.com>
  18 Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>
  19 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  20
  21 ---
  22  net/9p/client.c |    2 +-
  23  1 file changed, 1 insertion(+), 1 deletion(-)
  24
  25 --- a/net/9p/client.c
  26 +++ b/net/9p/client.c
  27 @@ -1073,7 +1073,7 @@ struct p9_client *p9_client_create(const
  28                 p9_debug(P9_DEBUG_ERROR,
  29                          "Please specify a msize of at least 4k\n");
  30                 err = -EINVAL;
  31 -               goto free_client;
  32 +               goto close_trans;
  33         }
  34
  35         err = p9_client_version(clnt);