Merge tag 'memcpy-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull FORTIFY_SOURCE updates from Kees Cook:
 "This series consists of two halves:

   - strict compile-time buffer size checking under FORTIFY_SOURCE for
     the memcpy()-family of functions (for extensive details and
     rationale, see the first commit)

   - enabling FORTIFY_SOURCE for Clang, which has had many overlapping
     bugs that we've finally worked past"

* tag 'memcpy-v5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  fortify: Add Clang support
  fortify: Make sure strlen() may still be used as a constant expression
  fortify: Use __diagnose_as() for better diagnostic coverage
  fortify: Make pointer arguments const
  Compiler Attributes: Add __diagnose_as for Clang
  Compiler Attributes: Add __overloadable for Clang
  Compiler Attributes: Add __pass_object_size for Clang
  fortify: Replace open-coded __gnu_inline attribute
  fortify: Update compile-time tests for Clang 14
  fortify: Detect struct member overflows in memset() at compile-time
  fortify: Detect struct member overflows in memmove() at compile-time
  fortify: Detect struct member overflows in memcpy() at compile-time

1 files changed, 2 insertions, 1 deletions

diff --git a/lib/Makefile b/lib/Makefile
index df001b876930..6b9ffc1bd1ee 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -377,7 +377,8 @@ TEST_FORTIFY_LOG = test_fortify.log
 quiet_cmd_test_fortify = TEST    $@
       cmd_test_fortify = $(CONFIG_SHELL) $(srctree)/scripts/test_fortify.sh \
 			$< $@ "$(NM)" $(CC) $(c_flags) \
-			$(call cc-disable-warning,fortify-source)
+			$(call cc-disable-warning,fortify-source) \
+			-DKBUILD_EXTRA_WARN1
 
 targets += $(TEST_FORTIFY_LOGS)
 clean-files += $(TEST_FORTIFY_LOGS)