From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out162-62-57-252.mail.qq.com (out162-62-57-252.mail.qq.com [162.62.57.252]) (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 4B5FA6FCE for ; Tue, 19 Dec 2023 05:30:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qq.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b="zg4T8xC7" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1702963801; bh=I2awE1lJaTlqqkdyjpo87BzMEp2fNSxxS6Cb/6JrL0k=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=zg4T8xC7DD9A8qUJHOnGPejgk01oNzmliWgUrKHcq0eb+BNK6QBRSbM/ySZeXTpIZ uZybpH9m4GopuyH3XmjJh7pffEtDUSpAxiFQPkNUkbmvWSyA3M5l7MXiwuWIEL1hsF qBb1AdKE7aKuoYQ5PvclsgIXfc1S2cGqrGvwvyKk= Received: from pek-lxu-l1.wrs.com ([111.198.225.215]) by newxmesmtplogicsvrszc5-1.qq.com (NewEsmtp) with SMTP id 5F9AD815; Tue, 19 Dec 2023 13:23:57 +0800 X-QQ-mid: xmsmtpt1702963437tbwlodod7 Message-ID: X-QQ-XMAILINFO: MR/iVh5QLeieHB9v/AIEcRCwh4pChVC/FFsoHNMCEnQZCNkfQSf1to6BetoCxh UnFqnS1bg0RhU27i64xkHDqQw8jVTR+zHKXSh7eL8JT4ozxtHPMbHQR8zR/AYqSr3IMS05H6Wmj4 IqT5JReu/eZi/rsYcQaUFDOScvBGkqsQ4ruWU3iXWqzivijcPLOcP0nqHeMbLCChzRTHM+1c7LXb NgqJatBifvExUCaeehilW8/ceIGl7dXkwFjuWJU1dpUcSOWBYDXWRskgMMVXvbVC6eSTN/FsYwoG MqBByopnBhr8NqX8LclyCrK9Tr6xIVUYUKyvwRBQ/qJcJ7FRC/XKd0qUx65+b0KqzR2qgRWsNh7d 3oGvDUm0wVYFzXl6x+4UoVAWYwnQ1Orw3A1nXQqQ2xwl2rJpZw6xiJDYXXRgV2TfHvmJGRqaShWo i4LuLyJpGy2ZyW7oEj9XE7ncmTrvtBwLz51kPUc5ctMQXHmpVBuH9tLvxarsoYUMF8nWc6/9QtdS njM+lphGEdgtRixhqa2j80sZvkV46UdZQaM7g8rYa1Vr6PSmKnUmK9wsZHKKwsgIbIdW/Fr3iGKf XE3QRutXaVy44bYnblZ6ZU1127VZEFnzOz3aahQ+yIDnpVdH/lmJKM73sKHe1mA9gWhkdAJWnRM3 YnDoBTaYCkF3lZLGCeerVcclut+G3trielD8OhDNvmfbLJcrd5+wRtABDkX8mQUMojBlmlnIRGAF vbRmQkowqnW0eFv1qjhM/4cXkI0DWdkSdFqOJJ3xYeNzMlyqAmNsMNvWd1UD8iOI1ykgDUk6mK2G P2tOxWYZX0D8WDRkpM9FSkvIXi0rURf6Et7AQm0IBGiOR7bZYzl5LnToB7YESs3Dn7MGDN39zx5z Jnw+OLo25PpxbQB4McCgxO+tQCQ+dRmDZsVtCPTQZVMhx479aUawJwnrl53rXiSuXg8xTaVaSemi d6tAM6jAtN+pj/TvwqFg== X-QQ-XMRINFO: OD9hHCdaPRBwq3WW+NvGbIU= From: Edward Adam Davis To: syzbot+20e9a5e0dd424a875f55@syzkaller.appspotmail.com Cc: axboe@kernel.dk, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [block?] INFO: task hung in blkdev_flush_mapping Date: Tue, 19 Dec 2023 13:23:58 +0800 X-OQ-MSGID: <20231219052357.1770891-2-eadavis@qq.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <0000000000008e6074060cc640bc@google.com> References: <0000000000008e6074060cc640bc@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit please test task hung in blkdev_flush_mapping #syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 5bd7ef53ffe5 diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c index b6414e1e645b..31656364d8a3 100644 --- a/drivers/block/nbd.c +++ b/drivers/block/nbd.c @@ -1394,6 +1394,9 @@ 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;