[PATCH mm] xtensa, kasan: define KASAN_SHADOW_END

[andrey . konovalov]

From: Andrey Konovalov <andreyknvl@xxxxxxxxxx>

Common KASAN code might rely on the definitions of the shadow mapping
start, end, and size. Define KASAN_SHADOW_END in addition to
KASAN_SHADOW_START and KASAN_SHADOW_SIZE.

Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202312240755.MqsWuTno-lkp@xxxxxxxxx/
Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>

---

Andrew, please put this patch before
"kasan: improve kasan_non_canonical_hook".
---
 arch/xtensa/include/asm/kasan.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/xtensa/include/asm/kasan.h b/arch/xtensa/include/asm/kasan.h
index 216b6f32c375..8d2b4248466f 100644
--- a/arch/xtensa/include/asm/kasan.h
+++ b/arch/xtensa/include/asm/kasan.h
@@ -18,6 +18,8 @@
 #define KASAN_SHADOW_START (XCHAL_PAGE_TABLE_VADDR + XCHAL_PAGE_TABLE_SIZE)
 /* Size of the shadow map */
 #define KASAN_SHADOW_SIZE (-KASAN_START_VADDR >> KASAN_SHADOW_SCALE_SHIFT)
+/* End of the shadow map */
+#define KASAN_SHADOW_END (KASAN_SHADOW_START + KASAN_SHADOW_SIZE)
 /* Offset for mem to shadow address transformation */
 #define KASAN_SHADOW_OFFSET __XTENSA_UL_CONST(CONFIG_KASAN_SHADOW_OFFSET)
 
-- 
2.25.1