From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6DCCD23A2 for ; Sun, 17 Dec 2023 05:22:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f70.google.com with SMTP id ca18e2360f4ac-7b7ce620dd9so8894239f.1 for ; Sat, 16 Dec 2023 21:22:42 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702790561; x=1703395361; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=ghR1slSXmklyUshujcAyZtfMlYi5j8Gi7ox2aOWyDsI=; b=mAWW9i4ixeur1bmf2ZhK26+0/qSbEVc7hKacjRaZk6NvOABhij6Q3R0NRy/8KwBW3v u+C3urmvCvuri1xYh0PfckIEZubf3aXf/uOCFDnOJQDLSLkkRxVCCjAWSDyfXQkhkGjz BZ4GvvK9qyvSUXHjxRFwKKveESbxAB90VPUHs5PZMIS8eu5gVTn8ZvxFbCmvDL6oRPyf uYMQjuPERX2m6FgoWFa+nkvHez6ZuOj3TdqkWk4ae0zl53kp1YLcSDhpgq2Ga9NwH0TU 6TfrMy+Wxuk4/hUb77H/9WJX6YtiK7g7g28+c0HOB0BgeKUXpMynRtcpNfoN8vo2L+ZM PElg== X-Gm-Message-State: AOJu0Yw3YdOWC7d3FADVPZv3Nk/4b31fsMVZ72PfDfjWwzmEj9TrV/3U 6qjxW5utpkP2Hpowcl9Gvj6XjA2BMOejygM72N2yBfCkr8RERlA= X-Google-Smtp-Source: AGHT+IFBx4MdCcYkWvHVT1UKhCFOcDnpqN3DdTn3/k00f1GGU0q9flvp2TCF/oIjLpFIzk+E/fQH7yh0IdbCgZW/FF1n+ugwwejO Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:23c5:b0:35f:9ef1:7add with SMTP id br5-20020a056e0223c500b0035f9ef17addmr194041ilb.4.1702790561732; Sat, 16 Dec 2023 21:22:41 -0800 (PST) Date: Sat, 16 Dec 2023 21:22:41 -0800 In-Reply-To: <000000000000098af2060b5ff161@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000008f207c060cadd228@google.com> Subject: Re: [syzbot] [block?] INFO: task hung in bdev_release From: syzbot To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: [block?] INFO: task hung in bdev_release Author: eadavis@qq.com please test task hung in bdev_release #syz test https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git 8c9660f65153 diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index b6414e1e645b..3a00ae9b4867 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -475,10 +475,11 @@ static enum blk_eh_timer_return nbd_xmit_timeout(struct request *req) */ struct nbd_sock *nsock = config->socks[cmd->index]; cmd->retries++; - dev_info(nbd_to_dev(nbd), "Possible stuck request %p: control (%s@%llu,%uB). Runtime %u seconds\n", + dev_info(nbd_to_dev(nbd), "Possible stuck request %p: control (%s@%llu,%uB). Runtime %u seconds, nbd: %p, d: %p\n", req, nbdcmd_to_ascii(req_to_nbd_cmd_type(req)), (unsigned long long)blk_rq_pos(req) << 9, - blk_rq_bytes(req), (req->timeout / HZ) * cmd->retries); + blk_rq_bytes(req), (req->timeout / HZ) * cmd->retries, + nbd, nbd->disk); mutex_lock(&nsock->tx_lock); if (cmd->cookie != nsock->cookie) { @@ -733,7 +734,7 @@ static int nbd_read_reply(struct nbd_device *nbd, struct socket *sock, if (result < 0) { if (!nbd_disconnected(nbd->config)) dev_err(disk_to_dev(nbd->disk), - "Receive control failed (result %d)\n", result); + "Receive control failed (result %d), nbd: %p, d: %p\n", result, nbd, nbd->disk); return result; } @@ -1394,6 +1395,9 @@ static int nbd_start_device(struct nbd_device *nbd) } set_bit(NBD_RT_HAS_PID_FILE, &config->runtime_flags); + if (num_connections == 1 && !nbd->tag_set.timeout) + nbd->tag_set.timeout = HZ * 1024; + nbd_dev_dbg_init(nbd); for (i = 0; i < num_connections; i++) { struct recv_thread_args *args; @@ -1424,6 +1428,7 @@ static int nbd_start_device(struct nbd_device *nbd) args->nsock = config->socks[i]; args->index = i; queue_work(nbd->recv_workq, &args->work); + printk("%p, %p, bs: %lld, blks: %lld, c: %d, %s\n", nbd, nbd->disk, config->bytesize, nbd_blksize(config), num_connections, __func__); } return nbd_set_size(nbd, config->bytesize, nbd_blksize(config)); }