[PATCH 15/19] perf: Fix perf_mmap() failure path

[Peter Zijlstra]

When f_ops->mmap() returns failure, m_ops->close() is *not* called.

Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
---
 kernel/events/core.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -6830,7 +6830,7 @@ static int perf_mmap(struct file *file,
 	vm_flags_set(vma, VM_DONTCOPY | VM_DONTEXPAND | VM_DONTDUMP);
 	vma->vm_ops = &perf_mmap_vmops;
 
-	if (event->pmu->event_mapped)
+	if (!ret && event->pmu->event_mapped)
 		event->pmu->event_mapped(event, vma->vm_mm);
 
 	return ret;