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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org,
        Thomas Bogendoerfer <tbogendoerfer@suse.de>,
        Paul Burton <paul.burton@mips.com>,
        Ralf Baechle <ralf@linux-mips.org>,
        James Hogan <jhogan@kernel.org>, linux-mips@vger.kernel.org,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.4 19/46] MIPS: fw: sni: Fix out of bounds init of o32 stack
Date:   Mon,  4 Nov 2019 22:44:50 +0100
Message-Id: <20191104211849.216560250@linuxfoundation.org>
In-Reply-To: <20191104211830.912265604@linuxfoundation.org>
References: <20191104211830.912265604@linuxfoundation.org>
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From: Thomas Bogendoerfer <tbogendoerfer@suse.de>

[ Upstream commit efcb529694c3b707dc0471b312944337ba16e4dd ]

Use ARRAY_SIZE to caluculate the top of the o32 stack.

Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/mips/fw/sni/sniprom.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/fw/sni/sniprom.c b/arch/mips/fw/sni/sniprom.c
index 6aa264b9856ac..7c6151d412bd7 100644
--- a/arch/mips/fw/sni/sniprom.c
+++ b/arch/mips/fw/sni/sniprom.c
@@ -42,7 +42,7 @@
 
 /* O32 stack has to be 8-byte aligned. */
 static u64 o32_stk[4096];
-#define O32_STK	  &o32_stk[sizeof(o32_stk)]
+#define O32_STK	  (&o32_stk[ARRAY_SIZE(o32_stk)])
 
 #define __PROM_O32(fun, arg) fun arg __asm__(#fun); \
 				     __asm__(#fun " = call_o32")
-- 
2.20.1