[PATCH 4.5 012/238] perf/core: Fix perf_sched_count derailment

4.5-stable review patch. If anyone has any objections, please let me know. -- From: Alexander Shishkin commit 927a5570855836e5d5859a80ce7e91e963545e8f upstream. The error path in perf_event_open() is such that asking for a sampling event on

[PATCH 4.5 012/238] perf/core: Fix perf_sched_count derailment

4.5-stable review patch. If anyone has any objections, please let me know. -- From: Alexander Shishkin commit 927a5570855836e5d5859a80ce7e91e963545e8f upstream. The error path in perf_event_open() is such that asking for a sampling event on a PMU that doesn't generate