x86/percpu: Disable named address spaces for KCSAN

ubizjak · Ingo Molnar · commit b6540de9b5c8 · 2024-03-25T12:17:01.000+01:00
-fsanitize=thread (KCSAN) is at the moment incompatible with named address spaces in a similar way as KASAN - see GCC PR sanitizer/111736: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111736 The patch disables named address spaces with KCSAN. Reported-by: kernel test robot <oliver.sang@intel.com> Signed-off-by: Uros Bizjak <ubizjak@gmail.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/20240325110128.615933-1-ubizjak@gmail.com
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
@@ -2439,6 +2439,8 @@ config USE_X86_SEG_SUPPORT
 	# with named address spaces - see GCC PR sanitizer/111736.
 	#
 	depends on !KASAN
+	# -fsanitize=thread (KCSAN) is also incompatible.
+	depends on !KCSAN
 
 config CC_HAS_SLS
 	def_bool $(cc-option,-mharden-sls=all)

Original file line number	Diff line number	Diff line change
`@@ -2439,6 +2439,8 @@ config USE_X86_SEG_SUPPORT`
`2439`	`2439`	`# with named address spaces - see GCC PR sanitizer/111736.`
`2440`	`2440`	`#`
`2441`	`2441`	`depends on !KASAN`
	`2442`	`+ # -fsanitize=thread (KCSAN) is also incompatible.`
	`2443`	`+ depends on !KCSAN`
`2442`	`2444`
`2443`	`2445`	`config CC_HAS_SLS`
`2444`	`2446`	`def_bool $(cc-option,-mharden-sls=all)`