Commit 6a2aae06 authored Oct 28, 2006 by Pavel Emelianov Committed by Linus Torvalds Oct 28, 2006

[PATCH] Fix potential OOPs in blkdev_open()



blkdev_open() calls bc_acquire() to get a struct block_device.  Since
bc_acquire() may return NULL when system is out of memory an appropriate
check is required.

Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent f2d0aa5b

fs/block_dev.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1131,6 +1131,8 @@ static int blkdev_open(struct inode * inode, struct file * filp)
		filp->f_flags \|= O_LARGEFILE;

		bdev = bd_acquire(inode);
		if (bdev == NULL)
		return -ENOMEM;

		res = do_open(bdev, filp, BD_MUTEX_NORMAL);
		if (res)