This is a note to let you know that I've just added the patch titled
s390/mm,ptdump: avoid Kasan vs Memcpy Real markers swapping
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
s390-mm-ptdump-avoid-kasan-vs-memcpy-real-markers-sw.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit e3acef85628d085a362d4160e918f4cb83d06202
Author: Vasily Gorbik <gor@xxxxxxxxxxxxx>
Date: Tue Jan 24 18:08:38 2023 +0100
s390/mm,ptdump: avoid Kasan vs Memcpy Real markers swapping
[ Upstream commit 05178996e1a77e2a4664536e6d101a086a905034 ]
---[ Real Memory Copy Area Start ]---
0x001bfffffffff000-0x001c000000000000 4K PTE I
---[ Kasan Shadow Start ]---
---[ Real Memory Copy Area End ]---
0x001c000000000000-0x001c000200000000 8G PMD RW NX
...
---[ Kasan Shadow End ]---
ptdump does a stable sort of markers. Move kasan markers after
memcpy real to avoid swapping.
Reviewed-by: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
Signed-off-by: Vasily Gorbik <gor@xxxxxxxxxxxxx>
Signed-off-by: Heiko Carstens <hca@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/s390/mm/dump_pagetables.c b/arch/s390/mm/dump_pagetables.c
index 9953819d79596..ba5f802688781 100644
--- a/arch/s390/mm/dump_pagetables.c
+++ b/arch/s390/mm/dump_pagetables.c
@@ -33,10 +33,6 @@ enum address_markers_idx {
#endif
IDENTITY_AFTER_NR,
IDENTITY_AFTER_END_NR,
-#ifdef CONFIG_KASAN
- KASAN_SHADOW_START_NR,
- KASAN_SHADOW_END_NR,
-#endif
VMEMMAP_NR,
VMEMMAP_END_NR,
VMALLOC_NR,
@@ -47,6 +43,10 @@ enum address_markers_idx {
ABS_LOWCORE_END_NR,
MEMCPY_REAL_NR,
MEMCPY_REAL_END_NR,
+#ifdef CONFIG_KASAN
+ KASAN_SHADOW_START_NR,
+ KASAN_SHADOW_END_NR,
+#endif
};
static struct addr_marker address_markers[] = {
@@ -62,10 +62,6 @@ static struct addr_marker address_markers[] = {
#endif
[IDENTITY_AFTER_NR] = {(unsigned long)_end, "Identity Mapping Start"},
[IDENTITY_AFTER_END_NR] = {0, "Identity Mapping End"},
-#ifdef CONFIG_KASAN
- [KASAN_SHADOW_START_NR] = {KASAN_SHADOW_START, "Kasan Shadow Start"},
- [KASAN_SHADOW_END_NR] = {KASAN_SHADOW_END, "Kasan Shadow End"},
-#endif
[VMEMMAP_NR] = {0, "vmemmap Area Start"},
[VMEMMAP_END_NR] = {0, "vmemmap Area End"},
[VMALLOC_NR] = {0, "vmalloc Area Start"},
@@ -76,6 +72,10 @@ static struct addr_marker address_markers[] = {
[ABS_LOWCORE_END_NR] = {0, "Lowcore Area End"},
[MEMCPY_REAL_NR] = {0, "Real Memory Copy Area Start"},
[MEMCPY_REAL_END_NR] = {0, "Real Memory Copy Area End"},
+#ifdef CONFIG_KASAN
+ [KASAN_SHADOW_START_NR] = {KASAN_SHADOW_START, "Kasan Shadow Start"},
+ [KASAN_SHADOW_END_NR] = {KASAN_SHADOW_END, "Kasan Shadow End"},
+#endif
{ -1, NULL }
};
