This Linux kernel change "kasan: prevent tracing of tags.c" is included in the Linux 5.0 release. This change is authored by Andrey Konovalov <andreyknvl [at] google.com> on Wed Feb 20 22:20:20 2019 -0800. The commit for this change in Linux stable tree is dc15a8a (patch).
kasan: prevent tracing of tags.c Similarly to commit 0d0c8de8788b ("kasan: mark file common so ftrace doesn't trace it") add the -pg flag to mm/kasan/tags.c to prevent conflicts with tracing. Link: http://lkml.kernel.org/r/9c4[email protected]google.com Signed-off-by: Andrey Konovalov <[email protected]> Reported-by: Qian Cai <[email protected]> Tested-by: Qian Cai <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: Alexander Potapenko <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Vincenzo Frascino <[email protected]> Cc: Kostya Serebryany <[email protected]> Cc: Evgeniy Stepanov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
There are 2 lines of Linux source code added/deleted in this change. Code changes to Linux kernel are as follows.
mm/kasan/Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/kasan/Makefile b/mm/kasan/Makefile index e2bb06c1..5d1065e 100644 --- a/mm/kasan/Makefile +++ b/mm/kasan/Makefile @@ -7,6 +7,8 @@ KCOV_INSTRUMENT := n CFLAGS_REMOVE_common.o = -pg CFLAGS_REMOVE_generic.o = -pg +CFLAGS_REMOVE_tags.o = -pg + # Function splitter causes unnecessary splits in __asan_load1/__asan_store1 # see: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63533