Commit a66bdf5d authored Apr 26, 2018 by Sughosh Ganu Committed by Borislav Petkov May 02, 2018

EDAC, ghes: Add a null pointer check in ghes_edac_unregister()

Add a null check for ghes_pvt, before dereferencing it. The pointer
could still be null in case the return path is taken before initialising
ghes_pvt in the registration function.

Reviewed-by: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Sughosh Ganu <sughosh.ganu@arm.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: lkml <linux-kernel@vger.kernel.org>
Link: http://lkml.kernel.org/r/1524737809-24475-1-git-send-email-sughosh.ganu@arm.com

Signed-off-by: Borislav Petkov <bp@suse.de>

parent cc7f3f13

drivers/edac/ghes_edac.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -517,6 +517,9 @@ void ghes_edac_unregister(struct ghes *ghes)
		{
		struct mem_ctl_info *mci;

		if (!ghes_pvt)
		return;

		mci = ghes_pvt->mci;
		edac_mc_del_mc(mci->pdev);
		edac_mc_free(mci);