drm/xe/query: Fix topology query pointer advance

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[ Upstream commit 7ee9b3e091 ]

The topology query helper advanced the user pointer by the size
of the pointer, not the size of the structure. This can misalign
the output blob and corrupt the following mask. Fix the increment
to use sizeof(*topo).
There is no issue currently, as sizeof(*topo) happens to be equal
to sizeof(topo) on 64-bit systems (both evaluate to 8 bytes).

Fixes: dd08ebf6c3 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patch.msgid.link/20260130043907.465128-2-shuicheng.lin@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
(cherry picked from commit c2a6859138)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Shuicheng Lin 2026-01-30 04:39:08 +00:00 • committed by Greg Kroah-Hartman

parent 1aacebe9d4

commit 422f646b4a

1 changed files with 1 additions and 1 deletions

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drivers/gpu/drm/xe/xe_query.c

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