[Bug 73982] Re: Another kernel bug at mm/rmap.c, process wedged

2008-03-19 Thread Andrew Ash
Sorry for the huge delay, Christian.  Is this still an issue for you?

** Changed in: linux-source-2.6.15 (Ubuntu)
   Status: New = Incomplete

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Another kernel bug at mm/rmap.c, process wedged
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[Bug 73982] Re: Another kernel bug at mm/rmap.c, process wedged

2008-03-19 Thread Christian Hudon
Well, it was for a long while. The dapper server kernel oopsed or
crashed a couple of times a month on that machine... which just wasn't
acceptable, so I moved to a hand-compiled 2.6.16.x kernel, and that
machine has been much more stable since then. And with the new LTS
release coming out soon, we'll be moving to that in a couple of months.
So no, this isn't really an issue for us anymore, although not quite for
the rights reasons, IMHO.

I don't mean to complain (especially given that we're not paying
anything for what is a very nice OS), but given that the bug report was
a detailed oops trace instead something unspecific like the machine
crashes from time to time under load, I would have expected someone who
can decode and understand kernel oopses (Canonical does have at least
one of those on staff, don't you?) to have a look at the oops, at least
to see if it pointed directly to an easy kernel bug. Or in the trickier
case of data structure had been corrupted by something else
previously, at least to know what got corrupted.

Did this one just fall through the cracks, or are kernel oops reports
just not a priority? It there something I should have done to raise the
importance of the oopses I reported? I must admit this makes me a bit
nervous about moving to the new LTS release. What if I hit another bug
like this one? (We can move this discussion out of the bug report if you
want.) Thanks.

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[Bug 73982] Re: Another kernel bug at mm/rmap.c, process wedged

2008-03-19 Thread Andrew Ash
I can't speak directly for Canonical, since I'm just a volunteer with
the Ubuntu project, but I'm sure they do have one.  With the huge
popularity of Ubuntu, there are now way more users and bug reports than
there are developers to adequately address each one, so some will
inevitably fall through the cracks, like this one did.  One of the
things that volunteers have done is create a team called BugSquad (
https://wiki.ubuntu.com/BugSquad ) to try to address issues before they
sit around for two years.

Another thing to consider is that most of the work done by Ubuntu
developers is getting all the pieces of the GNU/Linux stack to work
together nicely, from the kernel and drivers to X and Gnome/KDE to the
applications on top of those, everything is pieced together by the
Ubuntu team.  Since this is such a monumental effort in itself,
improving these components is more something that the upstream teams,
the people who create these products that are packaged by Ubuntu, are
more in charge of.  So if you have an issue, report it here to Launchpad
first.  If no one does anything, you can try to bring attention to it on
IRC channels.  I think #ubuntu-bugs would be the best place to start
(that's where the bug squad hangs out).  Sometimes though, it just comes
down to developers have too many things on their minds to follow up on
every single bug, which is unfortunate, but sadly the case.  Would I
would do then is open a bug in the upstream component.  So at the kernel
bugtracker, and then post a link to the Launchpad report.  The upstream
bugtracker is where the specialists are who are more likely to be able
to actually help you.  Feel free to contact me personally via my
Launchpad profile ( https://bugs.launchpad.net/~ash211 ) if you're
having trouble with something.

So the best thing to do to make sure that the latest version will
support your hardware is to run the development version every now and
then (if possible) and post any bugs you find.  If you don't start
checking until the new version is already released, then obviously it's
too late to get it fixed in that one!

I'll close this bug then, since apparently it got fixed by kernel devs
somewhere between 2.6.15 and 2.6.16  Thanks for the bug report!

** Changed in: linux-source-2.6.15 (Ubuntu)
   Status: Incomplete = Invalid

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