This is a note to let you know that I've just added the patch titled
target: Fix delayed Task Aborted Status (TAS) handling bug
to the 3.12-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:
target-fix-delayed-task-aborted-status-tas-handling-bug.patch
and it can be found in the queue-3.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 29f4c090079f442ea2723d292e4e64f0b6ac1f27 Mon Sep 17 00:00:00 2001
From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Date: Wed, 13 Nov 2013 14:39:14 -0800
Subject: target: Fix delayed Task Aborted Status (TAS) handling bug
From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
commit 29f4c090079f442ea2723d292e4e64f0b6ac1f27 upstream.
This patch fixes a bug in delayed Task Aborted Status (TAS) handling,
where transport_send_task_abort() was not returning for the case
when the se_tfo->write_pending() callback indicated that last fabric
specific WRITE PDU had not yet been received.
It also adds an explicit cmd->scsi_status = SAM_STAT_TASK_ABORTED
assignment within transport_check_aborted_status() to avoid the case
where se_tfo->queue_status() is called when the SAM_STAT_TASK_ABORTED
assignment + ->queue_status() in transport_send_task_abort() does not
occur once SCF_SENT_DELAYED_TAS has been set.
Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/target/target_core_transport.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -2910,6 +2910,7 @@ int transport_check_aborted_status(struc
cmd->t_task_cdb[0], cmd->se_tfo->get_task_tag(cmd));
cmd->se_cmd_flags |= SCF_SENT_DELAYED_TAS;
+ cmd->scsi_status = SAM_STAT_TASK_ABORTED;
trace_target_cmd_complete(cmd);
cmd->se_tfo->queue_status(cmd);
@@ -2938,6 +2939,7 @@ void transport_send_task_abort(struct se
if (cmd->se_tfo->write_pending_status(cmd) != 0) {
cmd->transport_state |= CMD_T_ABORTED;
smp_mb__after_atomic_inc();
+ return;
}
}
cmd->scsi_status = SAM_STAT_TASK_ABORTED;
Patches currently in stable-queue which might be from nab@xxxxxxxxxxxxxxx are
queue-3.12/iser-target-avoid-using-frmr-for-single-dma-entry-requests.patch
queue-3.12/target-fix-delayed-task-aborted-status-tas-handling-bug.patch
queue-3.12/iscsi-target-fix-mutex_trylock-usage-in-iscsit_increment_maxcmdsn.patch
queue-3.12/iscsi-target-fix-extract_param-to-handle-buffer-length-corner-case.patch
queue-3.12/iscsi-target-chap-auth-shouldn-t-match-username-with-trailing-garbage.patch
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