Commit c9f73a3d authored by Arjan van de Ven's avatar Arjan van de Ven Committed by Peter Zijlstra
Browse files

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: default avatarArjan van de Ven <arjan@linux.intel.com>
Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
parent 9b7019ae

kernel/perf_counter.c

+1 −0
Original line number Diff line number Diff line
@@ -2666,6 +2666,7 @@ 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)