linux-ext4 - [Bug 101011] Kernel Oops when disconnecting a mounted ext4 usb stick

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Message-ID: <bug-101011-13602-Ut7OZbr8rk@https.bugzilla.kernel.org/>
Date:	Sun, 16 Aug 2015 13:38:08 +0000
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 101011] Kernel Oops when disconnecting a mounted ext4 usb stick

https://bugzilla.kernel.org/show_bug.cgi?id=101011

--- Comment #10 from Theodore Tso <tytso@....edu> ---
On Sat, Aug 15, 2015 at 10:19:02AM +0200, Christoph Hellwig wrote:
> 
> sorry for the delay - I saw the mail Jan Cc'ed me on yesterday.  After
> my changes it should not go away and I had tested the original eject
> test that it indeed didn't.  Either I forgot a case, or the major
> writeback Tejun did a little later regressed it.
> 
> As I won't have time to look into it ASAP I'd suggest to revert my
> patch for now.  In the long run I really don't want to have these
> checks spread over file system so I plan to look into it once I
> get a few spare hours.

Thanks, I'll revert the patch.

I suspect we should add an ioctl to simulate a USB device unplug using
the loopback block device, so we can add a test to xfstests.

                                            - Ted

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