From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from r3-21.sinamail.sina.com.cn (r3-21.sinamail.sina.com.cn [202.108.3.21]) (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 371252E36EE for ; Mon, 21 Jul 2025 02:31:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=202.108.3.21 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753065090; cv=none; b=b00lQ+dJC5yAXaG9FwCplhRLuAA/zNyNHPvvP/5wRNZi4GqjoeWgxVFbJgnCc9bE6/uLjLVFgs8WhRibmrdIY+E8QV8Vlc8DpJL35sf2CqY+MKKCgcj3Xs7ijsfzdP6ltzdc2s3/uaYDewTvBeNEWPcg8EAx8V2edvhiYqMFNvc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753065090; c=relaxed/simple; bh=PbxKyzCvh9XkIkVj/R9SeI+BPkdXODPEV4EK21pRl6Y=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=C1B4iNUCriQ7b9JOSiJwwKJtOiSrqis1E4lIEfuogyCMJ9IJFW/IC/Zfly58Ejwdq51H3Tw6iR/VaIU0oaijztE0vUR6CkPRuyfVXwvpZzzRSb4sW80O3iqmYQ/pBg0Kmepn6Hj1jxMqC2q7Ya5dTyxG0D6p58TjaHaF34EY6Fg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sina.com; spf=pass smtp.mailfrom=sina.com; dkim=pass (1024-bit key) header.d=sina.com header.i=@sina.com header.b=dpHAaSxd; arc=none smtp.client-ip=202.108.3.21 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sina.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sina.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=sina.com header.i=@sina.com header.b="dpHAaSxd" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sina.com; s=201208; t=1753065084; bh=iFHBpB575Sc/tp2bC2Omi8vSgQO4G074rzM3pc9IjkQ=; h=From:Subject:Date:Message-ID; b=dpHAaSxdqmXc8941P34ZXpJKBJ4MEQzTS0oQeB1KPM5ci3LxKJrEm4ymaxbvxAtNT 8/oUclMXJpOlYN8V0wS+AmYWCYI278fhuaHgNSCCpIH9TH5VXHx4GHiFhKYMTnXmzR nv4KUv5JZf54rlQeLiceWiR4a5bLcC832rjKfQRU= X-SMAIL-HELO: localhost.localdomain Received: from unknown (HELO localhost.localdomain)([114.249.58.236]) by sina.com (10.54.253.33) with ESMTP id 687DA67100001B37; Mon, 21 Jul 2025 10:31:14 +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: 9668266685502 X-SMAIL-UIID: 26BB6F31953C4818B9028EE5A89C95EB-20250721-103114-1 From: Hillf Danton To: syzbot Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [mm?] [input?] [usb?] INFO: rcu detected stall in devtmpfsd (3) Date: Mon, 21 Jul 2025 10:31:02 +0800 Message-ID: <20250721023103.2628-1-hdanton@sina.com> In-Reply-To: <687cfb6d.a70a0220.693ce.00c6.GAE@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 > Date: Sun, 20 Jul 2025 07:21:33 -0700 [thread overview] > Hello, > > syzbot found the following issue on: > > HEAD commit: 155a3c003e55 Merge tag 'for-6.16/dm-fixes-2' of git://git... > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=15d3658c580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=f62a2ef17395702a > dashboard link: https://syzkaller.appspot.com/bug?extid=5583f599fe40b819b3e7 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1096f58c580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1686a382580000 #syz test upstream master