Patch "scsi: ibmvfc: fix misdefined reserved field in ibmvfc_fcp_rsp_info" has been added to the 4.9-stable tree

Patch "scsi: ibmvfc: fix misdefined reserved field in ibmvfc_fcp_rsp_info" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    scsi: ibmvfc: fix misdefined reserved field in ibmvfc_fcp_rsp_info

to the 4.9-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-ibmvfc-fix-misdefined-reserved-field-in-ibmvfc_fcp_rsp_info.patch
and it can be found in the queue-4.9 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 c39813652700f3df552b6557530f1e5f782dbe2f Mon Sep 17 00:00:00 2001
From: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
Date: Tue, 23 Jan 2018 20:11:32 -0600
Subject: scsi: ibmvfc: fix misdefined reserved field in ibmvfc_fcp_rsp_info

From: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>

commit c39813652700f3df552b6557530f1e5f782dbe2f upstream.

The fcp_rsp_info structure as defined in the FC spec has an initial 3
bytes reserved field. The ibmvfc driver mistakenly defined this field as
4 bytes resulting in the rsp_code field being defined in what should be
the start of the second reserved field and thus always being reported as
zero by the driver.

Ideally, we should wire ibmvfc up with libfc for the sake of code
deduplication, and ease of maintaining standardized structures in a
single place. However, for now simply fixup the definition in ibmvfc for
backporting to distros on older kernels. Wiring up with libfc will be
done in a followup patch.

Cc: <stable@vger.kernel.org>
Reported-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/scsi/ibmvscsi/ibmvfc.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/scsi/ibmvscsi/ibmvfc.h
+++ b/drivers/scsi/ibmvscsi/ibmvfc.h
@@ -367,7 +367,7 @@ enum ibmvfc_fcp_rsp_info_codes {
 };
 
 struct ibmvfc_fcp_rsp_info {
-	__be16 reserved;
+	u8 reserved[3];
 	u8 rsp_code;
 	u8 reserved2[4];
 }__attribute__((packed, aligned (2)));


Patches currently in stable-queue which might be from tyreld@linux.vnet.ibm.com are

queue-4.9/scsi-ibmvfc-fix-misdefined-reserved-field-in-ibmvfc_fcp_rsp_info.patch