Commit 69389837 authored Aug 01, 2019 by Lvqiang Huang Committed by Russell King Aug 23, 2019

ARM: 8897/1: check stmfd instruction using right shift



In the commit ef41b5c9 ("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.

Signed-off-by: Lvqiang Huang <Lvqiang.Huang@unisoc.com>
Signed-off-by: Chunyan Zhang <zhang.lyra@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>

parent c51bc12d

arch/arm/lib/backtrace.S

+1 −1

Original line number	Diff line number	Diff line
		@@ -66,7 +66,7 @@ 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