From: James Morse Date: Thu, 2 Jun 2016 12:20:32 +0000 (+0100) Subject: PM / Hibernate: Don't let kasan instrument snapshot.c X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=678309117768e25751594a48a2d873b0552a3130;p=linux-beck.git PM / Hibernate: Don't let kasan instrument snapshot.c Kasan causes the compiler to instrument C code and is used at runtime to detect accesses to memory that has been freed, or not yet allocated. The code in snapshot.c saves and restores memory when hibernating. This will access whole pages in the slab cache that have both free and allocated areas, resulting in a large number of false positives from Kasan. Disable instrumentation of this file. Signed-off-by: James Morse Acked-by: Catalin Marinas Signed-off-by: Rafael J. Wysocki --- diff --git a/kernel/power/Makefile b/kernel/power/Makefile index cb880a14cc39..eb4f717705ba 100644 --- a/kernel/power/Makefile +++ b/kernel/power/Makefile @@ -1,6 +1,8 @@ ccflags-$(CONFIG_PM_DEBUG) := -DDEBUG +KASAN_SANITIZE_snapshot.o := n + obj-y += qos.o obj-$(CONFIG_PM) += main.o obj-$(CONFIG_VT_CONSOLE_SLEEP) += console.o