powerpc: add a missing label in resume_kernel

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@gmail.com>
Acked-By: Tiejun Chen <tiejun.chen@windriver.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 3d990d3bd8baf5923d019208f7782d42e7f8a458..e0822a36192a88a1f630a1f6647a22e6799a35de 100644 (file)
--- 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