Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 2d4456c7 authored by Gustavo A. R. Silva's avatar Gustavo A. R. Silva Committed by Konrad Rzeszutek Wilk
Browse files

block: xen-blkback: add null check to avoid null pointer dereference 



Add null check before calling xen_blkif_put() to avoid potential
null pointer dereference.

Addresses-Coverity-ID: 1350942
Cc: Juergen Gross <jgross@suse.com>
Signed-off-by: default avatarGustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
parent 89515d02

drivers/block/xen-blkback/xenbus.c

+5 −3
Original line number Diff line number Diff line
@@ -504,11 +504,13 @@ static int xen_blkbk_remove(struct xenbus_device *dev) 


	dev_set_drvdata(&dev->dev, NULL);



	if (be->blkif)

	if (be->blkif) {

		xen_blkif_disconnect(be->blkif);



		/* Put the reference we set in xen_blkif_alloc(). */

		xen_blkif_put(be->blkif);

	}



	kfree(be->mode);

	kfree(be);

	return 0;