This is a note to let you know that I've just added the patch titled
console: Fix console name size mismatch
to the 3.10-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:
console-fix-console-name-size-mismatch.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 30a22c215a0007603ffc08021f2e8b64018517dd Mon Sep 17 00:00:00 2001
From: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>
Date: Sun, 1 Mar 2015 10:11:05 -0500
Subject: console: Fix console name size mismatch
From: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>
commit 30a22c215a0007603ffc08021f2e8b64018517dd upstream.
commit 6ae9200f2cab7 ("enlarge console.name") increased the storage
for the console name to 16 bytes, but not the corresponding
struct console_cmdline::name storage. Console names longer than
8 bytes cause read beyond end-of-string and failure to match
console; I'm not sure if there are other unexpected consequences.
Signed-off-by: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
kernel/printk.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -107,7 +107,7 @@ static struct console *exclusive_console
*/
struct console_cmdline
{
- char name[8]; /* Name of the driver */
+ char name[16]; /* Name of the driver */
int index; /* Minor dev. to use */
char *options; /* Options for the driver */
#ifdef CONFIG_A11Y_BRAILLE_CONSOLE
@@ -2290,6 +2290,8 @@ void register_console(struct console *ne
*/
for (i = 0; i < MAX_CMDLINECONSOLES && console_cmdline[i].name[0];
i++) {
+ BUILD_BUG_ON(sizeof(console_cmdline[i].name) !=
+ sizeof(newcon->name));
if (strcmp(console_cmdline[i].name, newcon->name) != 0)
continue;
if (newcon->index >= 0 &&
Patches currently in stable-queue which might be from peter@xxxxxxxxxxxxxxxxxx are
queue-3.10/console-fix-console-name-size-mismatch.patch
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