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| author |   Baoquan He <bhe@redhat.com> | 2017-08-24 21:13:57 +0800 |
|---|---|---|
| committer |   Joerg Roedel <jroedel@suse.de> | 2017-08-28 11:28:37 +0200 |
| commit | ec62b1ab0f4ccbc48aa8b9852cc25b38a1f12d1e (patch) | |
| tree | 165e9d8cd543641d1dfe35622ead52adc39d6133 /drivers/iommu/iommu.c | |
| parent | iommu/amd: Fix section mismatch warning (diff) | |
| download | linux-dev-ec62b1ab0f4ccbc48aa8b9852cc25b38a1f12d1e.tar.xz linux-dev-ec62b1ab0f4ccbc48aa8b9852cc25b38a1f12d1e.zip | |
iommu/amd: Check if domain is NULL in get_domain() and return -EBUSY
In get_domain(), 'domain' could be NULL before it's passed to dma_ops_domain()
to dereference. And the current code calling get_domain() can't deal with the
returned 'domain' well if its value is NULL.
So before dma_ops_domain() calling, check if 'domain' is NULL, If yes just return
ERR_PTR(-EBUSY) directly.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: df3f7a6e8e85 ('iommu/amd: Use is_attach_deferred call-back')
Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/iommu.c')
0 files changed, 0 insertions, 0 deletions