From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail114-241.sinamail.sina.com.cn (mail114-241.sinamail.sina.com.cn [218.30.114.241]) (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 9BE5A14A85 for ; Sun, 14 Apr 2024 02:53:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=218.30.114.241 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713063239; cv=none; b=UJ85nYZsMNdWZZ2dny5j4B84QhH0UkfERD698Nm1ybL0wJkQIySzkQ8VUTaeTfpeMePUY816GO8am+ogkSVdLDz/g0l7pZrP6vVwoOZZiKHnAEeZmapQdhFG+Qot77eyvQheoqm7MhRBv2ptpj5sOBsCE9cDei7eJaviu704UUM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713063239; c=relaxed/simple; bh=zy0K+iCf3zYU47iljEWx3S6wTvSanM/KulIMP0AGmtM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=aa/V6i9aA+GdtiOFjBzTplRXTqPRzqRL0ts0QjhTHJSZ5PNmTUqI8IR54U+nAmi8qJw92Pm3cX8ytbzwHZqQx5sxzN9ADcu8ljrwCfHGarYPhk8qlEd/zGtXJNO34V1zzYSc/gpC9oTApfI48h5nvSACvFKY1bXgQUCrNWhV5bA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sina.com; spf=pass smtp.mailfrom=sina.com; arc=none smtp.client-ip=218.30.114.241 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sina.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sina.com X-SMAIL-HELO: localhost.localdomain Received: from unknown (HELO localhost.localdomain)([113.118.67.190]) by sina.com (172.16.235.24) with ESMTP id 661B453400003049; Sun, 14 Apr 2024 10:53:44 +0800 (CST) X-Sender: hdanton@sina.com X-Auth-ID: hdanton@sina.com Authentication-Results: sina.com; spf=none smtp.mailfrom=hdanton@sina.com; dkim=none header.i=none; dmarc=none action=none header.from=hdanton@sina.com X-SMAIL-MID: 51338845089306 X-SMAIL-UIID: FE900988FC064252B4C67AA7A4665485-20240414-105344-1 From: Hillf Danton To: syzbot Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [kasan?] [mm?] INFO: rcu detected stall in __run_timer_base Date: Sun, 14 Apr 2024 10:53:36 +0800 Message-Id: <20240414025336.2016-1-hdanton@sina.com> In-Reply-To: <00000000000022a23c061604edb3@google.com> References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Sat, 13 Apr 2024 19:04:34 -0700 > syzbot found the following issue on: > > HEAD commit: fe46a7dd189e Merge tag 'sound-6.9-rc1' of git://git.kernel.. > git tree: upstream > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=111600cb180000 #syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git fe46a7dd189e --- x/net/sched/sch_taprio.c +++ y/net/sched/sch_taprio.c @@ -980,7 +980,9 @@ first_run: rcu_assign_pointer(q->current_entry, next); spin_unlock(&q->current_entry_lock); - hrtimer_set_expires(&q->advance_timer, end_time); + hrtimer_set_expires(&q->advance_timer, + ktime_add(timer->base->get_time(), + ns_to_ktime(NSEC_PER_USEC *200))); rcu_read_lock(); __netif_schedule(sch); --