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Commit 7707535a authored by Yang Shi's avatar Yang Shi Committed by Linus Torvalds
Browse files

ubsan: cosmetic fix to Kconfig text 



When enabling UBSAN_SANITIZE_ALL, the kernel image size gets increased
significantly (~3x).  So, it sounds better to have some note in Kconfig.

And, fixed a typo.

Signed-off-by: default avatarYang Shi <yang.shi@linaro.org>
Acked-by: default avatarAndrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent c05235d5

lib/Kconfig.ubsan

+3 −1
Original line number Original line Diff line number Diff line
@@ -18,6 +18,8 @@ config UBSAN_SANITIZE_ALL 
	  This option activates instrumentation for the entire kernel.

	  This option activates instrumentation for the entire kernel.

	  If you don't enable this option, you have to explicitly specify

	  If you don't enable this option, you have to explicitly specify

	  UBSAN_SANITIZE := y for the files/directories you want to check for UB.

	  UBSAN_SANITIZE := y for the files/directories you want to check for UB.

	  Enabling this option will get kernel image size increased

	  significantly.





config UBSAN_ALIGNMENT

config UBSAN_ALIGNMENT

	bool "Enable checking of pointers alignment"

	bool "Enable checking of pointers alignment"
@@ -25,5 +27,5 @@ config UBSAN_ALIGNMENT 
	default y if !HAVE_EFFICIENT_UNALIGNED_ACCESS

	default y if !HAVE_EFFICIENT_UNALIGNED_ACCESS

	help

	help

	  This option enables detection of unaligned memory accesses.

	  This option enables detection of unaligned memory accesses.

	  Enabling this option on architectures that support unalligned

	  Enabling this option on architectures that support unaligned

	  accesses may produce a lot of false positives.
 
	  accesses may produce a lot of false positives.