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| author | Philipp Stanner <pstanner@redhat.com> | 2023-09-20 14:36:09 +0200 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2023-10-09 16:59:42 +1000 |
| commit | 313ebe47d75558511aa1237b6e35c663b5c0ec6f (patch) | |
| tree | b2f095fd848595b1e749160167a04cf9debbd9b0 /drivers/gpu/drm/amd/amdgpu/amdgpu_ucode.h | |
| parent | 94f6f0550c625fab1f373bb86a6669b45e9748b3 (diff) | |
string.h: add array-wrappers for (v)memdup_user()
Currently, user array duplications are sometimes done without an
overflow check. Sometimes the checks are done manually; sometimes the
array size is calculated with array_size() and sometimes by calculating
n * size directly in code.
Introduce wrappers for arrays for memdup_user() and vmemdup_user() to
provide a standardized and safe way for duplicating user arrays.
This is both for new code as well as replacing usage of (v)memdup_user()
in existing code that uses, e.g., n * size to calculate array sizes.
Suggested-by: David Airlie <airlied@redhat.com>
Signed-off-by: Philipp Stanner <pstanner@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Zack Rusin <zackr@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230920123612.16914-3-pstanner@redhat.com
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ucode.h')
0 files changed, 0 insertions, 0 deletions