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Commit def32fad authored by Vineet Gupta's avatar Vineet Gupta
Browse files

ARC: stack unwinder to bail if PC is not kernel mode 



Currently, it doesn't invoke the callback but continues to unwind

Also while at it - simplify the code a bit

Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
parent 082ae1e1

arch/arc/kernel/stacktrace.c

+8 −10
Original line number Diff line number Diff line
@@ -122,19 +122,17 @@ arc_unwind_core(struct task_struct *tsk, struct pt_regs *regs, 
	while (1) {

		address = UNW_PC(&frame_info);



		if (address && __kernel_text_address(address)) {

		if (!address || !__kernel_text_address(address))

			break;



		if (consumer_fn(address, arg) == -1)

			break;

		}



		ret = arc_unwind(&frame_info);

		if (ret)

			break;



		if (ret == 0) {

		frame_info.regs.r63 = frame_info.regs.r31;

			continue;

		} else {

			break;

		}

	}



	return address;		/* return the last address it saw */