This is a note to let you know that I've just added the patch titled
SCSI: Fix spurious request sense in error handling
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:
scsi-fix-spurious-request-sense-in-error-handling.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 <[email protected]> know about it.
>From d555a2abf3481f81303d835046a5ec2c4fb3ca8e Mon Sep 17 00:00:00 2001
From: James Bottomley <[email protected]>
Date: Fri, 28 Mar 2014 10:50:17 -0700
Subject: SCSI: Fix spurious request sense in error handling
From: James Bottomley <[email protected]>
commit d555a2abf3481f81303d835046a5ec2c4fb3ca8e upstream.
We unconditionally execute scsi_eh_get_sense() to make sure all failed
commands that should have sense attached, do. However, the routine forgets
that some commands, because of the way they fail, will not have any sense code
... we should not bother them with a REQUEST_SENSE command. Fix this by
testing to see if we actually got a CHECK_CONDITION return and skip asking for
sense if we don't.
Tested-by: Alan Stern <[email protected]>
Signed-off-by: James Bottomley <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/scsi/scsi_error.c | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -1157,6 +1157,15 @@ int scsi_eh_get_sense(struct list_head *
__func__));
break;
}
+ if (status_byte(scmd->result) != CHECK_CONDITION)
+ /*
+ * don't request sense if there's no check condition
+ * status because the error we're processing isn't one
+ * that has a sense code (and some devices get
+ * confused by sense requests out of the blue)
+ */
+ continue;
+
SCSI_LOG_ERROR_RECOVERY(2, scmd_printk(KERN_INFO, scmd,
"%s: requesting sense\n",
current->comm));
Patches currently in stable-queue which might be from [email protected]
are
queue-3.14/scsi-fix-spurious-request-sense-in-error-handling.patch
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