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authorStephane Eranian <eranian@google.com>2009-11-23 21:40:49 -0800
committerIngo Molnar <mingo@elte.hu>2009-11-24 08:55:27 +0100
commit184d3da8ef0ca552dffa0fdd35c046e058a2cf9a (patch)
tree4f7bc687cea6ce6ee13a8beec59d8ae7081dfb64 /kernel/perf_event.c
parentb23d5767a5818caec8547d0bce1588b02bdecd30 (diff)
perf_events: Fix bogus copy_to_user() in perf_event_read_group()
When using an event group, the value and id for non leaders events were wrong due to invalid offset into the outgoing buffer. Signed-off-by: Stephane Eranian <eranian@google.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: paulus@samba.org Cc: perfmon2-devel@lists.sourceforge.net LKML-Reference: <4b0b71e1.0508d00a.075e.ffff84a3@mx.google.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/perf_event.c')
-rw-r--r--kernel/perf_event.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index 9425c9600c8..accfd7bfe38 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -1831,7 +1831,7 @@ static int perf_event_read_group(struct perf_event *event,
size = n * sizeof(u64);
- if (copy_to_user(buf + size, values, size)) {
+ if (copy_to_user(buf + ret, values, size)) {
ret = -EFAULT;
goto unlock;
}