diff options
author | Kees Cook <keescook@chromium.org> | 2023-08-18 02:58:49 +0300 |
---|---|---|
committer | Vinod Koul <vkoul@kernel.org> | 2023-09-28 14:12:14 +0300 |
commit | 195e46df2d996ff4bbf624891b1d3ae8ea9f315d (patch) | |
tree | f943bfffc0b129a3186a08c0474bd95a280ce429 /drivers/dma/stm32-mdma.c | |
parent | 8279f0b476f37c51de2ed8bd70d770b2893dd2fa (diff) | |
download | linux-195e46df2d996ff4bbf624891b1d3ae8ea9f315d.tar.xz |
dmaengine: stm32-dma: Annotate struct stm32_dma_desc with __counted_by
Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
(for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).
As found with Coccinelle[1], add __counted_by for struct stm32_dma_desc.
Additionally, since the element count member must be set before accessing
the annotated flexible array member, move its initialization earlier.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: dmaengine@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230817235859.49846-12-keescook@chromium.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/stm32-mdma.c')
0 files changed, 0 insertions, 0 deletions