From: Trond Myklebust <trondmy@hammerspace.com>
To: "pakki001@umn.edu" <pakki001@umn.edu>
Cc: "davem@davemloft.net" <davem@davemloft.net>,
"chuck.lever@oracle.com" <chuck.lever@oracle.com>,
"dwysocha@redhat.com" <dwysocha@redhat.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"kuba@kernel.org" <kuba@kernel.org>,
"bfields@fieldses.org" <bfields@fieldses.org>,
"linux-nfs@vger.kernel.org" <linux-nfs@vger.kernel.org>,
"anna.schumaker@netapp.com" <anna.schumaker@netapp.com>
Subject: Re: [PATCH] SUNRPC: Add a check for gss_release_msg
Date: Thu, 8 Apr 2021 15:01:21 +0000 [thread overview]
Message-ID: <c0de0985c0bf09a96efc538da2146f86e6fa7037.camel@hammerspace.com> (raw)
In-Reply-To: <20210407001658.2208535-1-pakki001@umn.edu>
On Tue, 2021-04-06 at 19:16 -0500, Aditya Pakki wrote:
> In gss_pipe_destroy_msg(), in case of error in msg, gss_release_msg
> deletes gss_msg. The patch adds a check to avoid a potential double
> free.
>
> Signed-off-by: Aditya Pakki <pakki001@umn.edu>
> ---
> net/sunrpc/auth_gss/auth_gss.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/net/sunrpc/auth_gss/auth_gss.c
> b/net/sunrpc/auth_gss/auth_gss.c
> index 5f42aa5fc612..eb52eebb3923 100644
> --- a/net/sunrpc/auth_gss/auth_gss.c
> +++ b/net/sunrpc/auth_gss/auth_gss.c
> @@ -848,7 +848,8 @@ gss_pipe_destroy_msg(struct rpc_pipe_msg *msg)
> warn_gssd();
> gss_release_msg(gss_msg);
> }
> - gss_release_msg(gss_msg);
> + if (gss_msg)
> + gss_release_msg(gss_msg);
> }
>
> static void gss_pipe_dentry_destroy(struct dentry *dir,
NACK. There's no double free there.
--
Trond Myklebust
Linux NFS client maintainer, Hammerspace
trond.myklebust@hammerspace.com
next prev parent reply other threads:[~2021-04-08 15:01 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-07 0:16 [PATCH] SUNRPC: Add a check for gss_release_msg Aditya Pakki
2021-04-07 15:34 ` J. Bruce Fields
2021-04-08 15:01 ` Trond Myklebust [this message]
2021-04-08 15:24 ` Olga Kornievskaia
2021-04-08 16:02 ` Trond Myklebust
2021-04-20 7:15 ` Greg KH
2021-04-20 17:10 ` J. Bruce Fields
2021-04-21 5:10 ` Leon Romanovsky
2021-04-21 5:43 ` Greg KH
2021-04-21 6:08 ` Leon Romanovsky
[not found] ` <CA+EnHHSw4X+ubOUNYP2zXNpu70G74NN1Sct2Zin6pRgq--TqhA@mail.gmail.com>
2021-04-21 8:15 ` Greg KH
2021-04-21 10:07 ` Sudip Mukherjee
2021-04-21 10:21 ` Greg KH
2021-04-21 11:58 ` Shelat, Abhi
2021-04-21 12:08 ` Greg KH
2021-04-21 12:19 ` Leon Romanovsky
2021-04-21 13:11 ` Trond Myklebust
2021-04-21 13:20 ` Leon Romanovsky
2021-04-21 13:42 ` Steven Rostedt
2021-04-21 13:21 ` gregkh
2021-04-21 13:34 ` Leon Romanovsky
2021-04-21 13:50 ` gregkh
2021-04-21 14:12 ` Leon Romanovsky
2021-04-21 18:50 ` Alexander Grund
2021-04-21 13:37 ` J. Bruce Fields
2021-04-21 13:49 ` Leon Romanovsky
2021-04-21 13:56 ` J. Bruce Fields
2021-04-22 19:39 ` J. Bruce Fields
2021-04-23 17:25 ` Leon Romanovsky
2021-04-23 18:07 ` J. Bruce Fields
2021-04-23 19:29 ` Leon Romanovsky
2021-04-23 21:48 ` J. Bruce Fields
2021-04-24 7:21 ` Leon Romanovsky
2021-04-24 18:34 ` Al Viro
2021-04-24 21:34 ` J. Bruce Fields
2021-04-25 0:41 ` Theodore Ts'o
2021-04-25 6:29 ` Greg KH
[not found] ` <20210426133605.GD21222@fieldses.org>
2021-04-26 13:47 ` J. Bruce Fields
2021-04-22 8:10 ` Sudip Mukherjee
2021-04-22 8:27 ` Greg KH
2021-04-21 12:51 ` Anna Schumaker
2021-04-21 14:15 ` Leon Romanovsky
2021-04-21 15:48 ` Theodore Ts'o
2021-04-21 17:34 ` Mike Rapoport
2021-04-22 3:57 ` Leon Romanovsky
2021-04-21 22:52 ` Guenter Roeck
[not found] <CAHr+ZK-ayy2vku9ovuSB4egtOxrPEKxCdVQN3nFqMK07+K5_8g@mail.gmail.com>
2021-04-21 19:49 ` Theodore Ts'o
2021-04-22 7:50 ` Eric Biggers
2021-04-21 20:27 Weikeng Chen
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