Commit 9bbbca3a authored Jun 28, 2008 by Neil Brown

Fix error paths if md_probe fails.



md_probe can fail (e.g. alloc_disk could fail) without
returning an error (as it alway returns NULL).
So when we call mddev_find immediately afterwards, we need
to check that md_probe actually succeeded.  This means checking
that mdev->gendisk is non-NULL.

cc: <stable@kernel.org>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Neil Brown <neilb@suse.de>

parent efe31143

drivers/md/md.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -3897,7 +3897,9 @@ static void autorun_devices(int part)

		md_probe(dev, NULL, NULL);
		mddev = mddev_find(dev);
		if (!mddev) {
		if (!mddev \|\| !mddev->gendisk) {
		if (mddev)
		mddev_put(mddev);
		printk(KERN_ERR
		"md: cannot allocate memory for md drive.\n");
		break;