From: Peter Zijlstra <peterz@infradead.org>
Date: Thu, 18 Jun 2026 12:18:27 +0000 (+0200)
Subject: perf: Fix addr_filter_ranges lifetime
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e62d4192e593630f355094adc467058a05bdc935;p=thirdparty%2Flinux.git

perf: Fix addr_filter_ranges lifetime

Lee Jia Jie reported that since event::addr_filter_ranges is used
under RCU, it should be RCU freed.

Reported-by: Lee Jia Jie <jiajie.lee@starlabs.sg>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 7935d5663944e..c3a84c7bcaeb9 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -5303,6 +5303,7 @@ static void free_event_rcu(struct rcu_head *head)
 	if (event->ns)
 		put_pid_ns(event->ns);
 	perf_event_free_filter(event);
+	kfree(event->addr_filter_ranges);
 	kmem_cache_free(perf_event_cache, event);
 }
 
@@ -5750,8 +5751,6 @@ static void __free_event(struct perf_event *event)
 	if (event->attach_state & PERF_ATTACH_CALLCHAIN)
 		put_callchain_buffers();
 
-	kfree(event->addr_filter_ranges);
-
 	if (event->attach_state & PERF_ATTACH_EXCLUSIVE)
 		exclusive_event_destroy(event);