The patch titled
From: Alexander Potapenko <glider@xxxxxxxxxx>
has been added to the -mm tree. Its filename is
mm-security-introduce-init_on_alloc=1-and-init_on_free=1-boot-options-v10.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-security-introduce-init_on_alloc%3D1-and-init_on_free%3D1-boot-options-v10.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-security-introduce-init_on_alloc%3D1-and-init_on_free%3D1-boot-options-v10.patch
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------------------------------------------------------
From: Alexander Potapenko <glider@xxxxxxxxxx>
Subject: mm: security: introduce init_on_alloc=1 and init_on_free=1 boot options
Link: http://lkml.kernel.org/r/20190628093131.199499-2-glider@xxxxxxxxxx
Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx>
Acked-by: Kees Cook <keescook@xxxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Acked-by: James Morris <jamorris@xxxxxxxxxxxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: James Morris <jmorris@xxxxxxxxx>
Cc: "Serge E. Hallyn" <serge@xxxxxxxxxx>
Cc: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
Cc: Kostya Serebryany <kcc@xxxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Sandeep Patil <sspatil@xxxxxxxxxxx>
Cc: Laura Abbott <labbott@xxxxxxxxxx>
Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Jann Horn <jannh@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Marco Elver <elver@xxxxxxxxxx>
Cc: Qian Cai <cai@xxxxxx>
Cc: James Morris <jamorris@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 8 ++++----
mm/slub.c | 5 ++---
2 files changed, 6 insertions(+), 7 deletions(-)
--- a/mm/page_alloc.c~mm-security-introduce-init_on_alloc=1-and-init_on_free=1-boot-options-v10
+++ a/mm/page_alloc.c
@@ -157,8 +157,8 @@ static int __init early_init_on_alloc(ch
if (!buf)
return -EINVAL;
ret = kstrtobool(buf, &bool_result);
- if (bool_result && IS_ENABLED(CONFIG_PAGE_POISONING))
- pr_warn("mem auto-init: CONFIG_PAGE_POISONING is on, will take precedence over init_on_alloc\n");
+ if (bool_result && page_poisoning_enabled())
+ pr_info("mem auto-init: CONFIG_PAGE_POISONING is on, will take precedence over init_on_alloc\n");
if (bool_result)
static_branch_enable(&init_on_alloc);
else
@@ -175,8 +175,8 @@ static int __init early_init_on_free(cha
if (!buf)
return -EINVAL;
ret = kstrtobool(buf, &bool_result);
- if (bool_result && IS_ENABLED(CONFIG_PAGE_POISONING))
- pr_warn("mem auto-init: CONFIG_PAGE_POISONING is on, will take precedence over init_on_free\n");
+ if (bool_result && page_poisoning_enabled())
+ pr_info("mem auto-init: CONFIG_PAGE_POISONING is on, will take precedence over init_on_free\n");
if (bool_result)
static_branch_enable(&init_on_free);
else
--- a/mm/slub.c~mm-security-introduce-init_on_alloc=1-and-init_on_free=1-boot-options-v10
+++ a/mm/slub.c
@@ -1281,9 +1281,8 @@ check_slabs:
out:
if ((static_branch_unlikely(&init_on_alloc) ||
static_branch_unlikely(&init_on_free)) &&
- (slub_debug & SLAB_POISON)) {
- pr_warn("mem auto-init: SLAB_POISON will take precedence over init_on_alloc/init_on_free\n");
- }
+ (slub_debug & SLAB_POISON))
+ pr_info("mem auto-init: SLAB_POISON will take precedence over init_on_alloc/init_on_free\n");
return 1;
}
_
Patches currently in -mm which might be from glider@xxxxxxxxxx are
mm-security-introduce-init_on_alloc=1-and-init_on_free=1-boot-options.patch
mm-security-introduce-init_on_alloc=1-and-init_on_free=1-boot-options-v8.patch
mm-security-introduce-init_on_alloc=1-and-init_on_free=1-boot-options-v9.patch
mm-security-introduce-init_on_alloc=1-and-init_on_free=1-boot-options-v10.patch
mm-init-report-memory-auto-initialization-features-at-boot-time.patch
lib-introduce-test_meminit-module.patch
lib-test_meminitc-minor-test-fixes.patch
