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

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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>
This commit is contained in:
Sughosh Ganu 2018-04-26 15:46:49 +05:30 committed by Borislav Petkov
parent cc7f3f1326
commit a66bdf5d11
1 changed files with 3 additions and 0 deletions
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3
drivers/edac/ghes_edac.c
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@ -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);