| From | Borislav Petkov <> | Subject | [PATCH v0 21/42] tracing: Check notifier registration return value | Date | Mon, 8 Nov 2021 11:11:36 +0100 |
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From: Borislav Petkov <bp@suse.de>
Avoid homegrown notifier registration checks.
No functional changes.
Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Steven Rostedt <rostedt@goodmis.org> --- kernel/trace/trace.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index f9139dc1262c..87fd6f1fa407 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -10064,8 +10064,8 @@ __init static int tracer_alloc_buffers(void) /* All seems OK, enable tracing */ tracing_disabled = 0; - atomic_notifier_chain_register(&panic_notifier_list, - &trace_panic_notifier); + if (atomic_notifier_chain_register(&panic_notifier_list, &trace_panic_notifier)) + pr_warn("Trace panic notifier already registered\n"); register_die_notifier(&trace_die_notifier); -- 2.29.2
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