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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 <[email protected]>
Signed-off-by: Sughosh Ganu <[email protected]>
Cc: Mauro Carvalho Chehab <[email protected]>
Cc: linux-edac <[email protected]>
Cc: lkml <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Borislav Petkov <[email protected]>
This commit is contained in:
Sughosh Ganu 2018-04-26 15:46:49 +05:30 • committed by Borislav Petkov
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);