linux-ext4 - [Bug 61631] New: kernel BUG at fs/ext4/super.c:818 umounting md raid6 volume

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Date:	Wed, 18 Sep 2013 22:05:53 +0000
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 61631] New: kernel BUG at fs/ext4/super.c:818 umounting md
 raid6 volume

https://bugzilla.kernel.org/show_bug.cgi?id=61631

            Bug ID: 61631
           Summary: kernel BUG at fs/ext4/super.c:818 umounting md raid6
                    volume
           Product: File System
           Version: 2.5
    Kernel Version: 3.11.1
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: ext4
          Assignee: fs_ext4@...nel-bugs.osdl.org
          Reporter: jfaulkne@....neu.edu
        Regression: No

Under recent kernels, including 3.11.1, I've been seeing kernel BUGs when
umounting a large md raid6 volume.  umount itself gives me a segfault.  I will
attach my config.gz and dmesg, which includes the BUG message.

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