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| author | Lu Baolu <baolu.lu@linux.intel.com> | 2018-11-05 05:18:58 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-13 11:16:09 +0300 |
| commit | 093255da5688347ddaa5f118c07b2873f542acdd (patch) | |
| tree | f844c35ef944199fde84011fa892249722a4ae96 /drivers/iommu | |
| parent | f84263bfd8015da1a48a9f7ab4aaacb1b105086c (diff) | |
| download | linux-093255da5688347ddaa5f118c07b2873f542acdd.tar.xz | |
iommu/vt-d: Fix NULL pointer dereference in prq_event_thread()
[ Upstream commit 19ed3e2dd8549c1a34914e8dad01b64e7837645a ]
When handling page request without pasid event, go to "no_pasid"
branch instead of "bad_req". Otherwise, a NULL pointer deference
will happen there.
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Sohil Mehta <sohil.mehta@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Fixes: a222a7f0bb6c9 'iommu/vt-d: Implement page request handling'
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/intel-svm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c index 4a03e5090952..188f4eaed6e5 100644 --- a/drivers/iommu/intel-svm.c +++ b/drivers/iommu/intel-svm.c @@ -596,7 +596,7 @@ static irqreturn_t prq_event_thread(int irq, void *d) pr_err("%s: Page request without PASID: %08llx %08llx\n", iommu->name, ((unsigned long long *)req)[0], ((unsigned long long *)req)[1]); - goto bad_req; + goto no_pasid; } if (!svm || svm->pasid != req->pasid) { |