[PATCH 5/7] ARM: unwind: Use arm_get_current_stackframe
Nikolay Borisov
Nikolay.Borisov at arm.com
Tue May 13 02:46:56 PDT 2014
Make the unwind code use the correct API so that the frame pointer
is extracted from the correct register.
Signed-off-by: Nikolay Borisov <Nikolay.Borisov at arm.com>
---
arch/arm/kernel/unwind.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/arch/arm/kernel/unwind.c b/arch/arm/kernel/unwind.c
index 3c21769..7aaec44 100644
--- a/arch/arm/kernel/unwind.c
+++ b/arch/arm/kernel/unwind.c
@@ -479,12 +479,10 @@ void unwind_backtrace(struct pt_regs *regs, struct task_struct *tsk)
tsk = current;
if (regs) {
- frame.fp = regs->ARM_fp;
- frame.sp = regs->ARM_sp;
- frame.lr = regs->ARM_lr;
+ arm_get_current_stackframe(regs, &frame);
/* PC might be corrupted, use LR in that case. */
- frame.pc = kernel_text_address(regs->ARM_pc)
- ? regs->ARM_pc : regs->ARM_lr;
+ if (!kernel_text_address(regs->ARM_pc))
+ frame.pc = regs->ARM_lr;
} else if (tsk == current) {
frame.fp = (unsigned long)__builtin_frame_address(0);
frame.sp = current_sp;
--
1.8.1.5
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