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-rw-r--r--kernel/perf_event.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index ad02feadb6b..b2536bd2b6b 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -62,7 +62,8 @@ static struct srcu_struct pmus_srcu;
*/
int sysctl_perf_event_paranoid __read_mostly = 1;
-int sysctl_perf_event_mlock __read_mostly = 512; /* 'free' kb per user */
+/* Minimum for 512 kiB + 1 user control page */
+int sysctl_perf_event_mlock __read_mostly = 512 + (PAGE_SIZE / 1024); /* 'free' kiB per user */
/*
* max perf event sample rate
@@ -5916,6 +5917,11 @@ SYSCALL_DEFINE5(perf_event_open,
goto err_alloc;
}
+ if (task) {
+ put_task_struct(task);
+ task = NULL;
+ }
+
/*
* Look up the group leader (we will attach this event to it):
*/