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fs/xattr: Annotate struct simple_xattr with __counted_by

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Add the __counted_by() compiler attribute to the flexible array member
'value' to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and
CONFIG_FORTIFY_SOURCE.

Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Link: https://patch.msgid.link/20260105122057.2347-2-thorsten.blum@linux.dev
Signed-off-by: Kees Cook <kees@kernel.org>
This commit is contained in:
Thorsten Blum
2026-01-05 13:20:53 +01:00
committed by Kees Cook
parent dacbfc1678
commit 7583873c31
1 changed files with 1 additions and 1 deletions
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2
include/linux/xattr.h
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@@ -114,7 +114,7 @@ struct simple_xattr {
struct rb_node rb_node;
char *name;
size_t size;
char value[];
char value[] __counted_by(size);
};
void simple_xattrs_init(struct simple_xattrs *xattrs);