From nobody Sat Feb 7 14:51:48 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1AE7035D5E4 for ; Tue, 27 Jan 2026 15:06:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769526367; cv=none; b=lybzc84t16B6ucmuKKur7WWQ36Fymkq3rNo1U0BSv4CxmM+zBGc3/fTfYMVIvTPBNmdu4lAzs84Gk1LPYv+0AflOyJBQPQccoimaxxEWpkV/BLvJ0c2ZyMhSAitSHRofe94aZIKWxY3Hto3zxCOmYjqWJHdc5+1nE5m/KEkPNqI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769526367; c=relaxed/simple; bh=Iwb0nTZK5hr6PHrU1eorsbeS3LH2liTvzUPgBOadV/w=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=gpC8QJKiINL8ags9FaG3mi+3NGjRe6TQHQgjRiJiG4BaJ3P/vdwcK65/Ug1LaAn6xIrx0vuejQf8UEdTu8ChkKrl1fcFJ3IiA+cjK1RvbkPf6Y5ckv/Dqfyzs0CdrV+CagmLGjtaT/UvhJHzeDIPQxGw22y4xRAI+eo6/Fmjzuw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gM1VUBvG; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="gM1VUBvG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BC794C19422; Tue, 27 Jan 2026 15:06:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769526366; bh=Iwb0nTZK5hr6PHrU1eorsbeS3LH2liTvzUPgBOadV/w=; h=Date:From:To:Cc:Subject:References:From; b=gM1VUBvGgrWo0qFX3pu19xXIprM11ZVr7ZdXFiuHnschT2l5zHXUM4mF16sRwlAQY j7wuBoRi1WAX4QSaNmL26lykh1J5ROp3CUTlUoStZ0Wb8rf/Y5CtZGlawKcD8kMMjU gprkvglypMhfnPaeMZxORsQR7Z73eRdzTfiGZ9rouKLA3ReOX758UVHtQiCjmvlbcY VEpXYh69mE6orixtSFNSzDXUL1vJWA+2ggeV8dMdvdk8mOYMlDYLM0Xvj6T/2NgV09 A3XFO/FtYxqvakG8IltwCdL506YSZ/x6K74EgLLpyu6UPvQ0gXmPwzZvv/HbZ5VhyS lavVKrjbJrw4Q== Received: from rostedt by gandalf with local (Exim 4.99.1) (envelope-from ) id 1vkkdw-00000000LdX-2XLW; Tue, 27 Jan 2026 10:06:12 -0500 Message-ID: <20260127150612.459344562@kernel.org> User-Agent: quilt/0.68 Date: Tue, 27 Jan 2026 10:06:02 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Masami Hiramatsu , Mark Rutland , Mathieu Desnoyers , Andrew Morton , Li Zhong Subject: [for-next][PATCH 07/15] tracing: Check the return value of tracing_update_buffers() References: <20260127150555.840066272@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Steven Rostedt In the very unlikely event that tracing_update_buffers() fails in trace_printk_init_buffers(), report the failure so that it is known. Link: https://lore.kernel.org/all/20220917020353.3836285-1-floridsleeves@gm= ail.com/ Cc: Mathieu Desnoyers Link: https://patch.msgid.link/20260107161510.4dc98b15@gandalf.local.home Suggested-by: Li Zhong Acked-by: Masami Hiramatsu (Google) Signed-off-by: Steven Rostedt (Google) --- kernel/trace/trace.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 8bd4ec08fb36..870205cba31e 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -3309,9 +3309,10 @@ void trace_printk_init_buffers(void) pr_warn("**********************************************************\n"); =20 /* Expand the buffers to set size */ - tracing_update_buffers(&global_trace); - - buffers_allocated =3D 1; + if (tracing_update_buffers(&global_trace) < 0) + pr_err("Failed to expand tracing buffers for trace_printk() calls\n"); + else + buffers_allocated =3D 1; =20 /* * trace_printk_init_buffers() can be called by modules. --=20 2.51.0