The patch titled
Subject: kasan: add wrappers for vmalloc hooks
has been removed from the -mm tree. Its filename was
kasan-add-wrappers-for-vmalloc-hooks.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Subject: kasan: add wrappers for vmalloc hooks
Add wrappers around functions that [un]poison memory for vmalloc
allocations. These functions will be used by HW_TAGS KASAN and therefore
need to be disabled when kasan=off command line argument is provided.
This patch does no functional changes for software KASAN modes.
Link: https://lkml.kernel.org/r/3b8728eac438c55389fb0f9a8a2145d71dd77487.1643047180.git.andreyknvl@xxxxxxxxxx
Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Reviewed-by: Alexander Potapenko <glider@xxxxxxxxxx>
Acked-by: Marco Elver <elver@xxxxxxxxxx>
Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Evgenii Stepanov <eugenis@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Peter Collingbourne <pcc@xxxxxxxxxx>
Cc: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/kasan.h | 17 +++++++++++++++--
mm/kasan/shadow.c | 5 ++---
2 files changed, 17 insertions(+), 5 deletions(-)
--- a/include/linux/kasan.h~kasan-add-wrappers-for-vmalloc-hooks
+++ a/include/linux/kasan.h
@@ -403,8 +403,21 @@ void kasan_release_vmalloc(unsigned long
unsigned long free_region_start,
unsigned long free_region_end);
-void kasan_unpoison_vmalloc(const void *start, unsigned long size);
-void kasan_poison_vmalloc(const void *start, unsigned long size);
+void __kasan_unpoison_vmalloc(const void *start, unsigned long size);
+static __always_inline void kasan_unpoison_vmalloc(const void *start,
+ unsigned long size)
+{
+ if (kasan_enabled())
+ __kasan_unpoison_vmalloc(start, size);
+}
+
+void __kasan_poison_vmalloc(const void *start, unsigned long size);
+static __always_inline void kasan_poison_vmalloc(const void *start,
+ unsigned long size)
+{
+ if (kasan_enabled())
+ __kasan_poison_vmalloc(start, size);
+}
#else /* CONFIG_KASAN_VMALLOC */
--- a/mm/kasan/shadow.c~kasan-add-wrappers-for-vmalloc-hooks
+++ a/mm/kasan/shadow.c
@@ -475,8 +475,7 @@ void kasan_release_vmalloc(unsigned long
}
}
-
-void kasan_unpoison_vmalloc(const void *start, unsigned long size)
+void __kasan_unpoison_vmalloc(const void *start, unsigned long size)
{
if (!is_vmalloc_or_module_addr(start))
return;
@@ -488,7 +487,7 @@ void kasan_unpoison_vmalloc(const void *
* Poison the shadow for a vmalloc region. Called as part of the
* freeing process at the time the region is freed.
*/
-void kasan_poison_vmalloc(const void *start, unsigned long size)
+void __kasan_poison_vmalloc(const void *start, unsigned long size)
{
if (!is_vmalloc_or_module_addr(start))
return;
_
Patches currently in -mm which might be from andreyknvl@xxxxxxxxxx are
stacktrace-add-interface-based-on-shadow-call-stack.patch
arm64-scs-save-scs_sp-values-per-cpu-when-switching-stacks.patch
arm64-implement-stack_trace_save_shadow.patch
kasan-use-stack_trace_save_shadow.patch
