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SubjectRE: [Bug 25832] kernel crashes when a mounted ext3/4 file system is physically removed
On Sat, 2011-09-17 at 13:34 -0400, Alan Stern wrote:
> On Sat, 17 Sep 2011, Rocko Requin wrote:
> > > Why were you using gnome-terminal? You should be running the tests at
> > > a console VT, not under X at all. Ctrl-Alt-F2 or the equivalent...
> >
> > Because with Ted's patch it doesn't crash when run from a console VT, even with an X server running.
> That's weird. Maybe the screen updates change some timing.
> > > Here's another patch to address the new problem. You can apply it on
> > > top of all the other patches.
> >
> > Attached is the crash log I get with the latest patch applied.
> Okay, more fallout from the same problem. Here's an updated version of
> the previous patch.

There have been reports of this in Debian going back to 2.6.39:

Plus possibly related crashes in elv_put_request after CD-ROM removal:

The former was also reported in Ubuntu since their 2.6.38-10:

The result of the discussion there was that it appeared to be a
regression due to commit 86cbfb5607d4b81b1a993ff689bbd2addd5d3a9b
("[SCSI] put stricter guards on queue dead checks") which was also
included in a stable update for 2.6.38.

There was also a report on, though no-one can see
quite what that says now:

I also reported most of the above to James Bottomley and linux-scsi
nearly 2 months ago, to no response.


Ben Hutchings
Power corrupts. Absolute power is kind of neat.
- John Lehman, Secretary of the US Navy 1981-1987
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