Messages in this thread Patch in this message | | | Date | Thu, 28 Sep 2023 10:32:38 -0000 | From | "tip-bot2 for Kees Cook" <> | Subject | [tip: irq/core] irqdomain: Annotate struct irq_domain with __counted_by |
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The following commit has been merged into the irq/core branch of tip:
Commit-ID: 6260ecd04594360ae2af104fb2641317728a66e4 Gitweb: https://git.kernel.org/tip/6260ecd04594360ae2af104fb2641317728a66e4 Author: Kees Cook <keescook@chromium.org> AuthorDate: Fri, 22 Sep 2023 10:51:27 -07:00 Committer: Thomas Gleixner <tglx@linutronix.de> CommitterDate: Thu, 28 Sep 2023 12:25:31 +02:00
irqdomain: Annotate struct irq_domain 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 irq_domain.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20230922175127.work.214-kees@kernel.org
--- include/linux/irqdomain.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h index 51c254b..ee0a82c 100644 --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -174,7 +174,7 @@ struct irq_domain { irq_hw_number_t hwirq_max; unsigned int revmap_size; struct radix_tree_root revmap_tree; - struct irq_data __rcu *revmap[]; + struct irq_data __rcu *revmap[] __counted_by(revmap_size); }; /* Irq domain flags */
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