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Commit 0a37119d authored by Steven Rostedt's avatar Steven Rostedt Committed by Ingo Molnar
Browse files

trace: fix output of stack trace 



Impact: fix to output of stack trace

If a function is not found in the stack of the stack tracer, the
number printed is quite strange. This fixes the algorithm to handle
missing functions better.

Signed-off-by: default avatarSteven Rostedt <srostedt@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 166d3c79

kernel/trace/trace_stack.c

+4 −1
Original line number Diff line number Diff line
@@ -78,6 +78,7 @@ static inline void check_stack(void) 
	 * on a new max, so it is far from a fast path.

	 */

	while (i < max_stack_trace.nr_entries) {

		int found = 0;



		stack_dump_index[i] = this_size;

		p = start;
@@ -86,11 +87,13 @@ static inline void check_stack(void) 
			if (*p == stack_dump_trace[i]) {

				this_size = stack_dump_index[i++] =

					(top - p) * sizeof(unsigned long);

				found = 1;

				/* Start the search from here */

				start = p + 1;

			}

		}



		if (!found)

			i++;

	}