Patch "scsi: scsi_debug: write_same: fix error report" has been added to the 4.9-stable tree

Patch "scsi: scsi_debug: write_same: fix error report" 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: scsi_debug: write_same: fix error report

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-scsi_debug-write_same-fix-error-report.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 foo@baz Mon Dec 18 14:12:35 CET 2017
From: Douglas Gilbert <dgilbert@interlog.com>
Date: Sun, 29 Oct 2017 10:47:19 -0400
Subject: scsi: scsi_debug: write_same: fix error report

From: Douglas Gilbert <dgilbert@interlog.com>


[ Upstream commit e33d7c56450b0a5c7290cbf9e1581fab5174f552 ]

The scsi_debug driver incorrectly suggests there is an error with the
SCSI WRITE SAME command when the number_of_logical_blocks is greater
than 1. It will also suggest there is an error when NDOB
(no data-out buffer) is set and the number_of_logical_blocks is
greater than 0. Both are valid, fix.

Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/scsi/scsi_debug.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -2996,11 +2996,11 @@ static int resp_write_same(struct scsi_c
 	if (-1 == ret) {
 		write_unlock_irqrestore(&atomic_rw, iflags);
 		return DID_ERROR << 16;
-	} else if (sdebug_verbose && (ret < (num * sdebug_sector_size)))
+	} else if (sdebug_verbose && !ndob && (ret < sdebug_sector_size))
 		sdev_printk(KERN_INFO, scp->device,
-			    "%s: %s: cdb indicated=%u, IO sent=%d bytes\n",
+			    "%s: %s: lb size=%u, IO sent=%d bytes\n",
 			    my_name, "write same",
-			    num * sdebug_sector_size, ret);
+			    sdebug_sector_size, ret);
 
 	/* Copy first sector to remaining blocks */
 	for (i = 1 ; i < num ; i++)


Patches currently in stable-queue which might be from dgilbert@interlog.com are

queue-4.9/scsi-scsi_debug-write_same-fix-error-report.patch