This is a note to let you know that I've just added the patch titled
zram: avoid null access when fail to alloc meta
to the 3.13-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:
zram-avoid-null-access-when-fail-to-alloc-meta.patch
and it can be found in the queue-3.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From db5d711e2db776f18219b033e5dc4fb7e4264dd7 Mon Sep 17 00:00:00 2001
From: Minchan Kim <minchan@xxxxxxxxxx>
Date: Mon, 3 Mar 2014 15:38:34 -0800
Subject: zram: avoid null access when fail to alloc meta
From: Minchan Kim <minchan@xxxxxxxxxx>
commit db5d711e2db776f18219b033e5dc4fb7e4264dd7 upstream.
zram_meta_alloc could fail so caller should check it. Otherwise, your
system will hang.
Signed-off-by: Minchan Kim <minchan@xxxxxxxxxx>
Acked-by: Jerome Marchand <jmarchan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/zram/zram_drv.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/staging/zram/zram_drv.c
+++ b/drivers/staging/zram/zram_drv.c
@@ -621,6 +621,8 @@ static ssize_t disksize_store(struct dev
disksize = PAGE_ALIGN(disksize);
meta = zram_meta_alloc(disksize);
+ if (!meta)
+ return -ENOMEM;
down_write(&zram->init_lock);
if (zram->init_done) {
up_write(&zram->init_lock);
Patches currently in stable-queue which might be from minchan@xxxxxxxxxx are
queue-3.13/zram-avoid-null-access-when-fail-to-alloc-meta.patch
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