From: Chunyan Zhang <zhang.lyra@gmail.com>
To: Russell King <linux@armlinux.org.uk>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: Chunyan Zhang <zhang.lyra@gmail.com>,
Lvqiang Huang <lvqiang.huang@unisoc.com>
Subject: [PATCH] ARM: check stmfd instruction using right shift
Date: Mon, 22 Jul 2019 15:14:19 +0800 [thread overview]
Message-ID: <20190722071419.22535-1-zhang.lyra@gmail.com> (raw)
In-Reply-To: <20190722071122.22434-1-zhang.lyra@gmail.com>
From: Lvqiang Huang <Lvqiang.Huang@unisoc.com>
In the commit ef41b5c92498 ("ARM: make kernel oops easier to read"),
- .word 0xe92d0000 >> 10 @ stmfd sp!, {}
+ .word 0xe92d0000 >> 11 @ stmfd sp!, {}
then the shift need to change to 11.
Fixes: ef41b5c92498 ("ARM: make kernel oops easier to read")
Signed-off-by: Lvqiang Huang <Lvqiang.Huang@unisoc.com>
Signed-off-by: Chunyan Zhang <zhang.lyra@gmail.com>
---
arch/arm/lib/backtrace.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/lib/backtrace.S b/arch/arm/lib/backtrace.S
index 7d7952e..926851b 100644
--- a/arch/arm/lib/backtrace.S
+++ b/arch/arm/lib/backtrace.S
@@ -70,7 +70,7 @@ for_each_frame: tst frame, mask @ Check for address exceptions
1003: ldr r2, [sv_pc, #-4] @ if stmfd sp!, {args} exists,
ldr r3, .Ldsi+4 @ adjust saved 'pc' back one
- teq r3, r2, lsr #10 @ instruction
+ teq r3, r2, lsr #11 @ instruction
subne r0, sv_pc, #4 @ allow for mov
subeq r0, sv_pc, #8 @ allow for mov + stmia
--
1.7.9.5
next prev parent reply other threads:[~2019-07-22 7:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-22 7:11 [PATCH] ARM: check stmfd instruction using right shift Chunyan Zhang
2019-07-22 7:14 ` Chunyan Zhang [this message]
2019-07-30 7:18 ` Chunyan Zhang
2019-07-30 11:02 ` Russell King - ARM Linux admin
2019-07-31 3:30 ` Chunyan Zhang
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