linux-kernel - [PATCH 5.10 028/152] riscv: Fix KASAN memory mapping.

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Message-Id: <20210118113354.130434971@linuxfoundation.org>
Date:   Mon, 18 Jan 2021 12:33:23 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Nick Hu <nickhu@...estech.com>,
        Nylon Chen <nylon7@...estech.com>,
        Palmer Dabbelt <palmerdabbelt@...gle.com>
Subject: [PATCH 5.10 028/152] riscv: Fix KASAN memory mapping.

From: Nick Hu <nickhu@...estech.com>

commit c25a053e15778f6b4d6553708673736e27a6c2cf upstream.

Use virtual address instead of physical address when translating
the address to shadow memory by kasan_mem_to_shadow().

Signed-off-by: Nick Hu <nickhu@...estech.com>
Signed-off-by: Nylon Chen <nylon7@...estech.com>
Fixes: b10d6bca8720 ("arch, drivers: replace for_each_membock() with for_each_mem_range()")
Cc: stable@...r.kernel.org
Signed-off-by: Palmer Dabbelt <palmerdabbelt@...gle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/riscv/mm/kasan_init.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/riscv/mm/kasan_init.c
+++ b/arch/riscv/mm/kasan_init.c
@@ -93,8 +93,8 @@ void __init kasan_init(void)
 								VMALLOC_END));
 
 	for_each_mem_range(i, &_start, &_end) {
-		void *start = (void *)_start;
-		void *end = (void *)_end;
+		void *start = (void *)__va(_start);
+		void *end = (void *)__va(_end);
 
 		if (start >= end)
 			break;