From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail114-240.sinamail.sina.com.cn (mail114-240.sinamail.sina.com.cn [218.30.114.240]) (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 C866C3BBF1 for ; Thu, 28 Mar 2024 23:28:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=218.30.114.240 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711668514; cv=none; b=IKt14rD/XKEi5UWl/NsJ/O+r0QzSqHNBJ5gdJRFlx6q4o01bfhxJ0yuJ1SyXu5e1JIGUyx0nIClg5tizAYaYNIE3WU+h6zgLmSCWxn+hsYfHVb3XvYPQJKX7KLHIOKQ6zYz20Nrl874VfiX9mE5tsdqIG6zLoib4CnenDv1B4Lc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711668514; c=relaxed/simple; bh=rDzS2GrmNAA1F/AQ4Xqb60h6PqGRmn11ugerccIK6wE=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=OC8e0cRxfvqrI7BFZdfXMeMEDM2fm95DFteytqNFELkLLdaNeEa+tMCMOgxiqeoMmJYhkhYCFiMuhZBCsqMg1OQm8w3vxaysgZ2GRG0wqsy5c27BhB8smbEbpjEC/46vzCf4U1OQMe4F0yXnKR545Rso5lTH/Ao9cnkVME3NJ2o= 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=218.30.114.240 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)([113.88.48.240]) by sina.com (172.16.235.24) with ESMTP id 6605FCF200003BB7; Thu, 29 Mar 2024 07:27:48 +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: 55047645089439 X-SMAIL-UIID: 96AF6B17DFC14B69A8766741FEBCB0EE-20240329-072748-1 From: Hillf Danton To: syzbot Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [audit?] [bpf?] INFO: rcu detected stall in kauditd_thread (4) Date: Fri, 29 Mar 2024 07:27:37 +0800 Message-Id: <20240328232737.2973-1-hdanton@sina.com> In-Reply-To: <000000000000d929dd0614a8ba8c@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 Wed, 27 Mar 2024 11:39:42 -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=112840ee180000 #syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master --- x/net/sched/sch_taprio.c +++ y/net/sched/sch_taprio.c @@ -980,7 +980,7 @@ first_run: rcu_assign_pointer(q->current_entry, next); spin_unlock(&q->current_entry_lock); - hrtimer_set_expires(&q->advance_timer, end_time); + hrtimer_forward_now(&q->advance_timer, ns_to_ktime(NSEC_PER_USEC *200)); rcu_read_lock(); __netif_schedule(sch); --