From: Christophe JAILLET Date: Sat, 7 Oct 2023 14:32:34 +0000 (+0200) Subject: VMCI: Annotate struct vmci_handle_arr with __counted_by X-Git-Tag: dma-mapping-6.9-2024-03-11~354^2~15 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=97f3880a33cd4a0c916242fd296aed975ad512d3;p=users%2Fhch%2Fdma-mapping.git VMCI: Annotate struct vmci_handle_arr 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). Signed-off-by: Christophe JAILLET Reviewed-by: Kees Cook Link: https://lore.kernel.org/r/56bef519d982218176b59bbba64a3a308d8733d5.1696689091.git.christophe.jaillet@wanadoo.fr Signed-off-by: Kees Cook --- diff --git a/drivers/misc/vmw_vmci/vmci_handle_array.h b/drivers/misc/vmw_vmci/vmci_handle_array.h index 96193f85be5b..b0e6b1956014 100644 --- a/drivers/misc/vmw_vmci/vmci_handle_array.h +++ b/drivers/misc/vmw_vmci/vmci_handle_array.h @@ -17,7 +17,7 @@ struct vmci_handle_arr { u32 max_capacity; u32 size; u32 pad; - struct vmci_handle entries[]; + struct vmci_handle entries[] __counted_by(capacity); }; #define VMCI_HANDLE_ARRAY_HEADER_SIZE \