[PATCH 4/5] perf/hw_breakpoint: Set breakpoint as disabled in modify_user_hw_breakpoint error path

[Jiri Olsa]

When we failed to modify breakpoint, we ended up with
disabled event. Mirror that in its 'attr.disabled',
because some parts of the ptrace code depends on it.

Link: http://lkml.kernel.org/n/tip-rp81jgq4rx19ozxm9decxq98@xxxxxxxxxxxxxx
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
---
 kernel/events/hw_breakpoint.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/events/hw_breakpoint.c b/kernel/events/hw_breakpoint.c
index 3e560d7609fd..eff7ab716139 100644
--- a/kernel/events/hw_breakpoint.c
+++ b/kernel/events/hw_breakpoint.c
@@ -523,8 +523,10 @@ int modify_user_hw_breakpoint(struct perf_event *bp, struct perf_event_attr *att
 		perf_event_disable(bp);
 
 	err = modify_user_hw_breakpoint_check(bp, attr, false);
-	if (err)
+	if (err) {
+		bp->attr.disabled = 1;
 		return err;
+	}
 
 	if (!attr->disabled)
 		perf_event_enable(bp);
-- 
2.17.1