This is a note to let you know that I've just added the patch titled
iscsi-target: Change BUG_ON to REJECT in iscsit_process_nop_out
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iscsi-target-change-bug_on-to-reject-in-iscsit_process_nop_out.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From 7cbfcc953789ff864c2bf8365a82a3fba4869649 Mon Sep 17 00:00:00 2001
From: Nicholas Bellinger <n...@linux-iscsi.org>
Date: Thu, 1 May 2014 13:44:56 -0700
Subject: iscsi-target: Change BUG_ON to REJECT in iscsit_process_nop_out
From: Nicholas Bellinger <n...@linux-iscsi.org>
commit 7cbfcc953789ff864c2bf8365a82a3fba4869649 upstream.
This patch changes an incorrect use of BUG_ON to instead generate a
REJECT + PROTOCOL_ERROR in iscsit_process_nop_out() code. This case
can occur with traditional TCP where a flood of zeros in the data
stream can reach this block for what is presumed to be a NOP-OUT with
a solicited reply, but without a valid iscsi_cmd pointer.
This incorrect BUG_ON was introduced during the v3.11-rc timeframe
with the following commit:
commit 778de368964c5b7e8100cde9f549992d521e9c89
Author: Nicholas Bellinger <n...@linux-iscsi.org>
Date: Fri Jun 14 16:07:47 2013 -0700
iscsi/isert-target: Refactor ISCSI_OP_NOOP RX handling
Reported-by: Arshad Hussain <arshad.huss...@calsoftinc.com>
Signed-off-by: Nicholas Bellinger <n...@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/target/iscsi/iscsi_target.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -1564,7 +1564,9 @@ int iscsit_process_nop_out(struct iscsi_
* Initiator is expecting a NopIN ping reply..
*/
if (hdr->itt != RESERVED_ITT) {
- BUG_ON(!cmd);
+ if (!cmd)
+ return iscsit_add_reject(conn,
ISCSI_REASON_PROTOCOL_ERROR,
+ (unsigned char *)hdr);
spin_lock_bh(&conn->cmd_lock);
list_add_tail(&cmd->i_conn_node, &conn->conn_cmd_list);
Patches currently in stable-queue which might be from n...@linux-iscsi.org are
queue-3.14/target-iser-fix-wrong-connection-requests-list-addition.patch
queue-3.14/target-iser-fix-iscsit_accept_np-and-rdma_cm-racy-flow.patch
queue-3.14/target-allow-non-supporting-backends-to-set-pi_prot_type-to-0.patch
queue-3.14/target-don-t-allow-setting-wc-emulation-if-device-doesn-t-support.patch
queue-3.14/iscsi-target-change-bug_on-to-reject-in-iscsit_process_nop_out.patch
queue-3.14/target-fix-memory-leak-on-xcopy.patch
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