iommu: Check dev->iommu in dev_iommu_priv_get() before dereferencing it
commit 4c9fb5d9 upstream. The dev_iommu_priv_get() needs a similar check to dev_iommu_fwspec_get() to make sure no NULL-ptr is dereferenced. Fixes: 05a0542b ("iommu/amd: Store dev_data as device iommu private data") Cc: stable@vger.kernel.org # v5.8+ Link: https://lore.kernel.org/r/20210202145419.29143-1-joro@8bytes.org Reference: https://bugzilla.kernel.org/show_bug.cgi?id=211241 Signed-off-by:Joerg Roedel <jroedel@suse.de> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
parent
7a3361e5
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