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authorKees Cook <keescook@chromium.org>2023-09-15 23:14:05 +0300
committerJan Kara <jack@suse.cz>2023-09-18 10:10:31 +0300
commitd1d3fcb324eceee7c4bf34b0ac89942ee16e3b74 (patch)
tree23d2052f4f8125378a5f61a0cab54ffb96f5cdd4 /fs/udf
parentd3cc1b0be258191d6360c82ea158c2972f8d3991 (diff)
downloadlinux-d1d3fcb324eceee7c4bf34b0ac89942ee16e3b74.tar.xz
udf: Annotate struct udf_bitmap 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 udf_bitmap. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Jan Kara <jack@suse.com> Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Jan Kara <jack@suse.cz> Message-Id: <20230915201404.never.574-kees@kernel.org>
Diffstat (limited to 'fs/udf')
-rw-r--r--fs/udf/udf_sb.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/udf/udf_sb.h b/fs/udf/udf_sb.h
index 9af6ff7f9747..f9a60bc1abcf 100644
--- a/fs/udf/udf_sb.h
+++ b/fs/udf/udf_sb.h
@@ -86,7 +86,7 @@ struct udf_virtual_data {
struct udf_bitmap {
__u32 s_extPosition;
int s_nr_groups;
- struct buffer_head *s_block_bitmap[];
+ struct buffer_head *s_block_bitmap[] __counted_by(s_nr_groups);
};
struct udf_part_map {