linux-kernel - [PATCH 4.19 40/80] arm64: fix the flush_icache_range arguments in machine

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Message-Id: <20200518173458.397323938@linuxfoundation.org>
Date:   Mon, 18 May 2020 19:36:58 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Christoph Hellwig <hch@....de>,
        Catalin Marinas <catalin.marinas@....com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 40/80] arm64: fix the flush_icache_range arguments in machine_kexec

From: Christoph Hellwig <hch@....de>

[ Upstream commit d51c214541c5154dda3037289ee895ea3ded5ebd ]

The second argument is the end "pointer", not the length.

Fixes: d28f6df1305a ("arm64/kexec: Add core kexec support")
Cc: <stable@...r.kernel.org> # 4.8.x-
Signed-off-by: Christoph Hellwig <hch@....de>
Signed-off-by: Catalin Marinas <catalin.marinas@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm64/kernel/machine_kexec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c
index 922add8adb749..5e26ef0078638 100644
--- a/arch/arm64/kernel/machine_kexec.c
+++ b/arch/arm64/kernel/machine_kexec.c
@@ -192,6 +192,7 @@ void machine_kexec(struct kimage *kimage)
 	 * the offline CPUs. Therefore, we must use the __* variant here.
 	 */
 	__flush_icache_range((uintptr_t)reboot_code_buffer,
+			     (uintptr_t)reboot_code_buffer +
 			     arm64_relocate_new_kernel_size);
 
 	/* Flush the kimage list and its buffers. */
-- 
2.20.1