The patch titled Subject: kasan: default to inline instrumentation has been added to the -mm mm-unstable branch. Its filename is kasan-default-to-inline-instrumentation.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kasan-default-to-inline-instrumentation.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Paul Heidekrüger <paul.heidekrueger@xxxxxx> Subject: kasan: default to inline instrumentation Date: Thu, 9 Nov 2023 15:51:00 +0000 KASan inline instrumentation can yield up to a 2x performance gain at the cost of a larger binary. Make inline instrumentation the default, as suggested in the bug report below. When an architecture does not support inline instrumentation, it should set ARCH_DISABLE_KASAN_INLINE, as done by PowerPC, for instance. Link: https://lkml.kernel.org/r/20231109155101.186028-1-paul.heidekrueger@xxxxxx Signed-off-by: Paul Heidekrüger <paul.heidekrueger@xxxxxx> Reported-by: Andrey Konovalov <andreyknvl@xxxxxxxxx> Reviewed-by: Marco Elver <elver@xxxxxxxxxx> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=203495 Acked-by: Andrey Konovalov <andreyknvl@xxxxxxxxx> Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx> Cc: Alexander Potapenko <glider@xxxxxxxxxx> Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx> Cc: Vincenzo Frascino <vincenzo.frascino@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- lib/Kconfig.kasan | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/lib/Kconfig.kasan~kasan-default-to-inline-instrumentation +++ a/lib/Kconfig.kasan @@ -134,7 +134,7 @@ endchoice choice prompt "Instrumentation type" depends on KASAN_GENERIC || KASAN_SW_TAGS - default KASAN_OUTLINE + default KASAN_INLINE if !ARCH_DISABLE_KASAN_INLINE config KASAN_OUTLINE bool "Outline instrumentation" _ Patches currently in -mm which might be from paul.heidekrueger@xxxxxx are kasan-default-to-inline-instrumentation.patch