mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-12-28 09:06:11 -05:00
Code Issues Packages Projects Releases Wiki Activity

integer-wrap: Force full rebuild when .scl file changes

Browse Source 
Since the integer wrapping sanitizer's behavior depends on its associated
.scl file, we must force a full rebuild if the file changes. If not,
instrumentation may differ between targets based on when they were built.

Generate a new header file, integer-wrap.h, any time the Clang .scl
file changes. Include the header file in compiler-version.h when its
associated feature name, INTEGER_WRAP, is defined. This will be picked
up by fixdep and force rebuilds where needed.

Acked-by: Justin Stitt <justinstitt@google.com>
Link: https://lore.kernel.org/r/20250503184623.2572355-3-kees@kernel.org
Reviewed-by: Nicolas Schier <n.schier@avm.de>
Signed-off-by: Kees Cook <kees@kernel.org>
This commit is contained in:
Kees Cook
2025-05-03 11:46:20 -07:00
parent 056000c471
commit 11bb1678e2
3 changed files with 16 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
scripts/basic/Makefile
View File

@@ -14,3 +14,8 @@ cmd_create_randstruct_seed = \
$(obj)/randstruct.seed: $(gen-randstruct-seed) FORCE
$(call if_changed,create_randstruct_seed)
always-$(CONFIG_RANDSTRUCT) += randstruct.seed
# integer-wrap: if the .scl file changes, we need to do a full rebuild.
$(obj)/../../include/generated/integer-wrap.h: $(srctree)/scripts/integer-wrap-ignore.scl FORCE
$(call if_changed,touch)
always-$(CONFIG_UBSAN_INTEGER_WRAP) += ../../include/generated/integer-wrap.h