Commit 0dc3d523 authored Jul 21, 2009 by Arjan van de Ven Committed by Linus Torvalds Jul 22, 2009

perf: fix stack data leak



the "reserved" field was not initialized to zero, resulting in 4 bytes
of stack data leaking to userspace....

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 61fe0870

kernel/perf_counter.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -2665,6 +2665,7 @@ static void perf_counter_output(struct perf_counter *counter, int nmi,
		header.size += sizeof(cpu_entry);

		cpu_entry.cpu = raw_smp_processor_id();
		cpu_entry.reserved = 0;
		}

		if (sample_type & PERF_SAMPLE_PERIOD)