This is a note to let you know that I've just added the patch titled
tty: vt, fix bogus division in csi_J
to the 4.4-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:
tty-vt-fix-bogus-division-in-csi_j.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 42acfc6615f47e465731c263bee0c799edb098f2 Mon Sep 17 00:00:00 2001
From: Jiri Slaby <jslaby@xxxxxxx>
Date: Mon, 3 Oct 2016 11:00:17 +0200
Subject: tty: vt, fix bogus division in csi_J
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From: Jiri Slaby <jslaby@xxxxxxx>
commit 42acfc6615f47e465731c263bee0c799edb098f2 upstream.
In csi_J(3), the third parameter of scr_memsetw (vc_screenbuf_size) is
divided by 2 inappropriatelly. But scr_memsetw expects size, not
count, because it divides the size by 2 on its own before doing actual
memset-by-words.
So remove the bogus division.
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
Cc: Petr Písař <ppisar@xxxxxxxxxx>
Fixes: f8df13e0a9 (tty: Clean console safely)
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/tty/vt/vt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -1178,7 +1178,7 @@ static void csi_J(struct vc_data *vc, in
break;
case 3: /* erase scroll-back buffer (and whole display) */
scr_memsetw(vc->vc_screenbuf, vc->vc_video_erase_char,
- vc->vc_screenbuf_size >> 1);
+ vc->vc_screenbuf_size);
set_origin(vc);
if (CON_IS_VISIBLE(vc))
update_screen(vc);
Patches currently in stable-queue which might be from jslaby@xxxxxxx are
queue-4.4/tty-vt-fix-bogus-division-in-csi_j.patch
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