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| author | Kees Cook <keescook@chromium.org> | 2023-10-06 22:17:49 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-10-07 18:13:09 +0200 |
| commit | 36b2d7dd5a8ac95c8c1e69bdc93c4a6e2dc28a23 (patch) | |
| tree | 3bda428b0dcea6c6f40321430986cdae4eb04afe /drivers/base | |
| parent | resource: Constify resource crosscheck APIs (diff) | |
| download | linux-36b2d7dd5a8ac95c8c1e69bdc93c4a6e2dc28a23.tar.xz linux-36b2d7dd5a8ac95c8c1e69bdc93c4a6e2dc28a23.zip | |
driver core: platform: Annotate struct irq_affinity_devres 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 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
irq_affinity_devres.
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: linux-hardening@vger.kernel.org
Link: https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci [1]
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20231006201749.work.432-kees@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/platform.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 828908d1d5b9..10c577963418 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -292,7 +292,7 @@ EXPORT_SYMBOL_GPL(platform_irq_count); struct irq_affinity_devres { unsigned int count; - unsigned int irq[]; + unsigned int irq[] __counted_by(count); }; static void platform_disable_acpi_irq(struct platform_device *pdev, int index) |