Re: [PATCH v2] tracing/user_events: Clear copied tracing state before fork duplication
flat view
From: Steven Rostedt <rostedt@goodmis.org>
Date: 2026-08-27 12:07:55
Also in:
lkml, stable
On Wed, 26 Aug 2026 21:44:15 +0000 Jérémy Jean [off-list ref] wrote:
quoted hunk ↗ jump to hunk
diff --git a/kernel/trace/trace_events_user.c b/kernel/trace/trace_events_user.c index 2bbc89d4a266..339e18085af3 100644 --- a/kernel/trace/trace_events_user.c +++ b/kernel/trace/trace_events_user.c@@ -865,9 +865,12 @@ void user_event_mm_remove(struct task_struct *t) void user_event_mm_dup(struct task_struct *t, struct user_event_mm *old_mm) { - struct user_event_mm *mm = user_event_mm_alloc(t); + struct user_event_mm *mm;
Why this change?
quoted hunk ↗ jump to hunk
struct user_event_enabler *enabler; + t->user_event_mm = NULL; + mm = user_event_mm_alloc(t);
I don't see why you moved the mm assignment down here. The t->user_event_mm is not used in user_event_mm_alloc(). -- Steve
quoted hunk ↗ jump to hunk
+ if (!mm) return;