[ 01/42] powerpc: add a missing label in resume_kernel

From: Greg Kroah-Hartman
Date: Tue Apr 23 2013 - 18:18:45 EST


3.8-stable review patch. If anyone has any objections, please let me know.

------------------

From: Kevin Hao <haokexin@xxxxxxxxx>

commit d8b92292408831d86ff7b781e66bf79301934b99 upstream.

A label 0 was missed in the patch a9c4e541 (powerpc/kprobe: Complete
kprobe and migrate exception frame). This will cause the kernel
branch to an undetermined address if there really has a conflict when
updating the thread flags.

Signed-off-by: Kevin Hao <haokexin@xxxxxxxxx>
Acked-By: Tiejun Chen <tiejun.chen@xxxxxxxxxxxxx>
Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
arch/powerpc/kernel/entry_64.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -634,7 +634,7 @@ resume_kernel:
/* Clear _TIF_EMULATE_STACK_STORE flag */
lis r11,_TIF_EMULATE_STACK_STORE@h
addi r5,r9,TI_FLAGS
- ldarx r4,0,r5
+0: ldarx r4,0,r5
andc r4,r4,r11
stdcx. r4,0,r5
bne- 0b


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