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| author | Nikos Tsironis <ntsironis@arrikto.com> | 2020-03-27 16:01:10 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-17 10:50:24 +0200 |
| commit | 33344a7661a1e4780f3513505e0b354c59cfa76b (patch) | |
| tree | fa6ccb00f8a8a69da636b59d6f3ad340b4d333dd /drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | |
| parent | 2d7eb7ee36a3600118edc328b9aef9444a89f401 (diff) | |
dm clone: Add missing casts to prevent overflows and data corruption
[ Upstream commit 9fc06ff56845cc5ccafec52f545fc2e08d22f849 ]
Add missing casts when converting from regions to sectors.
In case BITS_PER_LONG == 32, the lack of the appropriate casts can lead
to overflows and miscalculation of the device sector.
As a result, we could end up discarding and/or copying the wrong parts
of the device, thus corrupting the device's data.
Fixes: 7431b7835f55 ("dm: add clone target")
Cc: stable@vger.kernel.org # v5.4+
Signed-off-by: Nikos Tsironis <ntsironis@arrikto.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c')
0 files changed, 0 insertions, 0 deletions