The quilt patch titled
Subject: kmsan: introduce memset_no_sanitize_memory()
has been removed from the -mm tree. Its filename was
kmsan-introduce-memset_no_sanitize_memory.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Ilya Leoshkevich <iii@xxxxxxxxxxxxx>
Subject: kmsan: introduce memset_no_sanitize_memory()
Date: Fri, 21 Jun 2024 13:34:56 +0200
Add a wrapper for memset() that prevents unpoisoning. This is useful for
filling memory allocator redzones.
Link: https://lkml.kernel.org/r/20240621113706.315500-13-iii@xxxxxxxxxxxxx
Signed-off-by: Ilya Leoshkevich <iii@xxxxxxxxxxxxx>
Reviewed-by: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
Cc: Christian Borntraeger <borntraeger@xxxxxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Heiko Carstens <hca@xxxxxxxxxxxxx>
Cc: Hyeonggon Yoo <42.hyeyoo@xxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: <kasan-dev@xxxxxxxxxxxxxxxx>
Cc: Marco Elver <elver@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: Roman Gushchin <roman.gushchin@xxxxxxxxx>
Cc: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
Cc: Sven Schnelle <svens@xxxxxxxxxxxxx>
Cc: Vasily Gorbik <gor@xxxxxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/kmsan.h | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
--- a/include/linux/kmsan.h~kmsan-introduce-memset_no_sanitize_memory
+++ a/include/linux/kmsan.h
@@ -255,6 +255,19 @@ void kmsan_enable_current(void);
*/
void kmsan_disable_current(void);
+/**
+ * memset_no_sanitize_memory(): Fill memory without KMSAN instrumentation.
+ * @s: address of kernel memory to fill.
+ * @c: constant byte to fill the memory with.
+ * @n: number of bytes to fill.
+ *
+ * This is like memset(), but without KMSAN instrumentation.
+ */
+static inline void *memset_no_sanitize_memory(void *s, int c, size_t n)
+{
+ return __memset(s, c, n);
+}
+
#else
static inline void kmsan_init_shadow(void)
@@ -362,6 +375,11 @@ static inline void kmsan_disable_current
{
}
+static inline void *memset_no_sanitize_memory(void *s, int c, size_t n)
+{
+ return memset(s, c, n);
+}
+
#endif
#endif /* _LINUX_KMSAN_H */
_
Patches currently in -mm which might be from iii@xxxxxxxxxxxxx are
