From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 BEFBB419FC5; Fri, 4 Sep 2026 06:05:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788501951; cv=none; b=gdV+JDLDvaQglpOWJCLopc9KTpG8nLBOjf1hpHbS/7xGfpq/UPpYeOJKNTchoAPP5RLldrbV1nRxJpkDM1DLXmGvo7J36KLf/VsCrs4QrQ0UnP0IJV4xmCIuC7h6f2r8vnmXI+SVqsvhZaFqawHNZUSWEBlsX8+CCQ3XelOQ84k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788501951; c=relaxed/simple; bh=Es1y7tZE+Qz0EcIo3FPp0JYiKJxgPpT46WFvqOqAp9M=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HhXgEj2WokiFKiaXbY2F6oLlMMEBIL7rmLKq4dOnrNtryB32/fZs499/cNPgM/bkBQbFs2pMQvW0eGMHg4+q/w4UweRGeAzTPpmaXUyEfUtJerlcFnUQRAFzG0ezQnhi1qJ370IVzuSna9ds9u6zhrWr2pzDp/IfT/YsbLvS0rk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=zVhIP7xo; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="zVhIP7xo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 087771F00A3D; Fri, 4 Sep 2026 06:05:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788501950; bh=tF9ob1xTSToh5bfbBWOf6KrBPMmBnZT75CESlKOJ8mA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=zVhIP7xofkgGAjq3EJZ3PJbyULNSLpBEbmnJ2DE1MGmpNaxZu5TabqIBcIc+HkHRW 6WW2r+KprzaKUxxbUJTWcmeZSq4vH0dtrlv4rYIiUBh2RWqlsJUF2EMtaHluE+HfHf o26Eu/InjGpiqcvz4q0Qw1NttLSQaM5IdTPQusQ4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, "Masami Hiramatsu (Google)" , Vincent Donnefort , Steven Rostedt Subject: [PATCH 6.12 036/403] tracing: Fix logged instance name on creation failure Date: Fri, 4 Sep 2026 06:57:19 +0200 Message-ID: <20260904045735.634431520@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260904045734.806166532@linuxfoundation.org> References: <20260904045734.806166532@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Vincent Donnefort commit a9a01be2834a529cbd490ccbab02643f0c1735f2 upstream. When boot instance creation fails, the kernel incorrectly logs "(null)" as the instance name because strsep() consumes curr_str entirely during parsing. Print the properly parsed name variable instead. And while at it log the error code. Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20260807085423.4175161-1-vdonnefort@google.com Fixes: cb1f98c5e574 ("tracing: Add creation of instances at boot command line") Acked-by: Masami Hiramatsu (Google) Signed-off-by: Vincent Donnefort Signed-off-by: Steven Rostedt Signed-off-by: Greg Kroah-Hartman --- kernel/trace/trace.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -10431,7 +10431,8 @@ __init static void enable_instances(void tr = trace_array_create_systems(name, NULL, addr, size); if (IS_ERR(tr)) { - pr_warn("Tracing: Failed to create instance buffer %s\n", curr_str); + pr_warn("Tracing: Failed to create instance buffer '%s' (%ld)\n", name, + PTR_ERR(tr)); continue; }