From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@bugzilla.kernel.org Subject: [Bug 89131] New: Hangs when checking torrent through libtorrent; kernel BUG at mm/iov_iter.c:219! Date: Mon, 01 Dec 2014 13:19:19 +0000 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit To: linux-ext4@vger.kernel.org Return-path: Received: from mail.kernel.org ([198.145.19.201]:43661 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752404AbaLANTX (ORCPT ); Mon, 1 Dec 2014 08:19:23 -0500 Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 51D2420266 for ; Mon, 1 Dec 2014 13:19:21 +0000 (UTC) Received: from bugzilla1.web.kernel.org (bugzilla1.web.kernel.org [172.20.200.51]) by mail.kernel.org (Postfix) with ESMTP id A607B2026C for ; Mon, 1 Dec 2014 13:19:19 +0000 (UTC) Sender: linux-ext4-owner@vger.kernel.org List-ID: https://bugzilla.kernel.org/show_bug.cgi?id=89131 Bug ID: 89131 Summary: Hangs when checking torrent through libtorrent; kernel BUG at mm/iov_iter.c:219! Product: File System Version: 2.5 Kernel Version: 3.17.3 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: blocking Priority: P1 Component: ext4 Assignee: fs_ext4@kernel-bugs.osdl.org Reporter: kokoko3k@gmail.com Regression: No Created attachment 159351 --> https://bugzilla.kernel.org/attachment.cgi?id=159351&action=edit Backtraces from both the systems When i use qbittorrent (libtorrent) by explicitely disable the os cache and do the hash-check on a specific torrent data (it does not happen on all of the torrents), linux hangs leaving me no choice but to reboot somehow. I managed to get two backtraces from completely different systems (an e7300 desktop and an ivybridge laptop), they're attached. As a reference, i started to talk about the issue here: https://github.com/qbittorrent/qBittorrent/issues/2200#issuecomment-64951598 ...seems the issue is given by the use of the O_DIRECT flag -- You are receiving this mail because: You are watching the assignee of the bug.