linux-kernel - [PATCH 5.0 190/238] NFSv4.1: Reinitialise sequence results before retransmitting a request

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 22 Mar 2019 12:16:49 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Trond Myklebust <trond.myklebust@...merspace.com>
Subject: [PATCH 5.0 190/238] NFSv4.1: Reinitialise sequence results before retransmitting a request

5.0-stable review patch.  If anyone has any objections, please let me know.

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

From: Trond Myklebust <trond.myklebust@...merspace.com>

commit c1dffe0bf7f9c3d57d9f237a7cb2a81e62babd2b upstream.

If we have to retransmit a request, we should ensure that we reinitialise
the sequence results structure, since in the event of a signal
we need to treat the request as if it had not been sent.

Signed-off-by: Trond Myklebust <trond.myklebust@...merspace.com>
Cc: stable@...r.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/nfs/nfs4proc.c |   12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -947,6 +947,13 @@ nfs4_sequence_process_interrupted(struct
 
 #endif	/* !CONFIG_NFS_V4_1 */
 
+static void nfs41_sequence_res_init(struct nfs4_sequence_res *res)
+{
+	res->sr_timestamp = jiffies;
+	res->sr_status_flags = 0;
+	res->sr_status = 1;
+}
+
 static
 void nfs4_sequence_attach_slot(struct nfs4_sequence_args *args,
 		struct nfs4_sequence_res *res,
@@ -958,10 +965,6 @@ void nfs4_sequence_attach_slot(struct nf
 	args->sa_slot = slot;
 
 	res->sr_slot = slot;
-	res->sr_timestamp = jiffies;
-	res->sr_status_flags = 0;
-	res->sr_status = 1;
-
 }
 
 int nfs4_setup_sequence(struct nfs_client *client,
@@ -1007,6 +1010,7 @@ int nfs4_setup_sequence(struct nfs_clien
 
 	trace_nfs4_setup_sequence(session, args);
 out_start:
+	nfs41_sequence_res_init(res);
 	rpc_call_start(task);
 	return 0;