The patch titled
Subject: kasan, arm64: move initialization message
has been removed from the -mm tree. Its filename was
kasan-arm64-move-initialization-message.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Subject: kasan, arm64: move initialization message
Software tag-based KASAN mode is fully initialized with kasan_init_tags(),
while the generic mode only requires kasan_init(). Move the
initialization message for tag-based mode into kasan_init_tags().
Also fix pr_fmt() usage for KASAN code: generic.c doesn't need it as it
doesn't use any printing functions; tag-based mode should use "kasan:"
instead of KBUILD_MODNAME (which stands for file name).
Link: https://lkml.kernel.org/r/29a30ea4e1750450dd1f693d25b7b6cb05913ecf.1606161801.git.andreyknvl@xxxxxxxxxx
Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Reviewed-by: Alexander Potapenko <glider@xxxxxxxxxx>
Tested-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>
Cc: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Cc: Branislav Rankov <Branislav.Rankov@xxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Evgenii Stepanov <eugenis@xxxxxxxxxx>
Cc: Kevin Brodsky <kevin.brodsky@xxxxxxx>
Cc: Marco Elver <elver@xxxxxxxxxx>
Cc: Vasily Gorbik <gor@xxxxxxxxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/arm64/include/asm/kasan.h | 9 +++------
arch/arm64/mm/kasan_init.c | 13 +++++--------
mm/kasan/generic.c | 2 --
mm/kasan/sw_tags.c | 4 +++-
4 files changed, 11 insertions(+), 17 deletions(-)
--- a/arch/arm64/include/asm/kasan.h~kasan-arm64-move-initialization-message
+++ a/arch/arm64/include/asm/kasan.h
@@ -12,14 +12,10 @@
#define arch_kasan_reset_tag(addr) __tag_reset(addr)
#define arch_kasan_get_tag(addr) __tag_get(addr)
-#ifdef CONFIG_KASAN
-void kasan_init(void);
-#else
-static inline void kasan_init(void) { }
-#endif
-
#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
+void kasan_init(void);
+
/*
* KASAN_SHADOW_START: beginning of the kernel virtual addresses.
* KASAN_SHADOW_END: KASAN_SHADOW_START + 1/N of kernel virtual addresses,
@@ -43,6 +39,7 @@ void kasan_copy_shadow(pgd_t *pgdir);
asmlinkage void kasan_early_init(void);
#else
+static inline void kasan_init(void) { }
static inline void kasan_copy_shadow(pgd_t *pgdir) { }
#endif
--- a/arch/arm64/mm/kasan_init.c~kasan-arm64-move-initialization-message
+++ a/arch/arm64/mm/kasan_init.c
@@ -278,17 +278,14 @@ static void __init kasan_init_depth(void
init_task.kasan_depth = 0;
}
-#else /* CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS) */
-
-static inline void __init kasan_init_shadow(void) { }
-
-static inline void __init kasan_init_depth(void) { }
-
-#endif /* CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS */
-
void __init kasan_init(void)
{
kasan_init_shadow();
kasan_init_depth();
+#if defined(CONFIG_KASAN_GENERIC)
+ /* CONFIG_KASAN_SW_TAGS also requires kasan_init_tags(). */
pr_info("KernelAddressSanitizer initialized\n");
+#endif
}
+
+#endif /* CONFIG_KASAN_GENERIC || CONFIG_KASAN_SW_TAGS */
--- a/mm/kasan/generic.c~kasan-arm64-move-initialization-message
+++ a/mm/kasan/generic.c
@@ -9,8 +9,6 @@
* Andrey Konovalov <andreyknvl@xxxxxxxxx>
*/
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
#include <linux/export.h>
#include <linux/interrupt.h>
#include <linux/init.h>
--- a/mm/kasan/sw_tags.c~kasan-arm64-move-initialization-message
+++ a/mm/kasan/sw_tags.c
@@ -6,7 +6,7 @@
* Author: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
*/
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#define pr_fmt(fmt) "kasan: " fmt
#include <linux/export.h>
#include <linux/interrupt.h>
@@ -41,6 +41,8 @@ void kasan_init_tags(void)
for_each_possible_cpu(cpu)
per_cpu(prng_state, cpu) = (u32)get_cycles();
+
+ pr_info("KernelAddressSanitizer initialized\n");
}
/*
_
Patches currently in -mm which might be from andreyknvl@xxxxxxxxxx are
