Commit db5d711e authored Mar 03, 2014 by Minchan Kim Committed by Linus Torvalds Mar 04, 2014

zram: avoid null access when fail to alloc meta



zram_meta_alloc could fail so caller should check it.  Otherwise, your
system will hang.

Signed-off-by: Minchan Kim <minchan@kernel.org>
Acked-by: Jerome Marchand <jmarchan@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent a5f6ea29

drivers/block/zram/zram_drv.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -612,6 +612,8 @@ static ssize_t disksize_store(struct device *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);