1 files changed, 8 insertions, 0 deletions

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 6bc21e202ae4..243bfc68d0fe 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -8955,6 +8955,14 @@ static struct perf_cpu_context __percpu *find_pmu_context(int ctxn)
 
 static void free_pmu_context(struct pmu *pmu)
 {
+        /*
+         * Static contexts such as perf_sw_context have a global lifetime
+         * and may be shared between different PMUs. Avoid freeing them
+         * when a single PMU is going away.
+         */
+        if (pmu->task_ctx_nr > perf_invalid_context)
+                return;
+
         mutex_lock(&pmus_lock);
         free_percpu(pmu->pmu_cpu_context);
         mutex_unlock(&pmus_lock);