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Commit 606b4c99 authored by Paul Mundt's avatar Paul Mundt
Browse files

sh: stacktrace: Properly terminate the trace entry buffer. 



This inserts a ULONG_MAX entry at the end of the valid entries in the
stack trace buffer so the default code doesn't need to scan to the end of
available slots. This also makes the trace buffer termination behaviour
consistent with the other architectures.

Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent f9967e23

arch/sh/kernel/stacktrace.c

+4 −0
Original line number Diff line number Diff line
@@ -62,6 +62,8 @@ void save_stack_trace(struct stack_trace *trace) 
	unsigned long *sp = (unsigned long *)current_stack_pointer;



	unwind_stack(current, NULL, sp,  &save_stack_ops, trace);

	if (trace->nr_entries < trace->max_entries)

		trace->entries[trace->nr_entries++] = ULONG_MAX;

}

EXPORT_SYMBOL_GPL(save_stack_trace);
@@ -97,5 +99,7 @@ void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace) 
	unsigned long *sp = (unsigned long *)tsk->thread.sp;



	unwind_stack(current, NULL, sp,  &save_stack_ops_nosched, trace);

	if (trace->nr_entries < trace->max_entries)

		trace->entries[trace->nr_entries++] = ULONG_MAX;

}

EXPORT_SYMBOL_GPL(save_stack_trace_tsk);