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
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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
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