iommu/vt-d: Fix NULL pointer dereference in page request error case

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Dan Carpenter pointed out an error path which could lead to us
dereferencing the 'svm' pointer after we know it to be NULL because the
PASID lookup failed. Fix that, and make it less likely to happen again.

Fixes: a222a7f0bb ('iommu/vt-d: Implement page request handling')
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

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David Woodhouse 2015-10-15 21:12:56 +01:00

parent 5cec753709

commit 26322ab55a

1 changed files with 8 additions and 4 deletions

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drivers/iommu/intel-svm.c

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