Bug#932250: Fwd: Bug#932250: linux-image-amd64: random segfaults without taking something down

From	a a <m.alfaeko@gmail.com>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#932250: Fwd: Bug#932250: linux-image-amd64: random segfaults without taking something down
Date	2019-07-18 13:20 +0200
Message-ID	<ylcC6-1Xo-3@gated-at.bofh.it> (permalink)
References	<ykF3r-69x-9@gated-at.bofh.it> <yl41P-4QT-3@gated-at.bofh.it> <ylcC6-1Xo-5@gated-at.bofh.it> <ykF3r-69x-9@gated-at.bofh.it> <ylcC6-1Xo-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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It shouldnt be overheating, because i have custom setting on cpu heatsink
fan and the ram module has a own heatsink. Plus i have fan on case which
puls out the excees heat. The segfaults happend at low load, maybe it wasnt
above P2 power state. Also i have made sure that the cpu doenst exceed 90°C.

Out of tree modules are from virtual box.

After disabling overcommit and apparmor i didnt experience a segfault for
now. The segfaults started to dissapeer it seams.

I fear that this might be a bug tied to certain order of instructions. For
example if i enable debug it may change order of instruction and the bug
doesnt occur.
Reason that i reported this bug with package linux-image-amd64 is that i
didnt know about the existence of linux-mage-4.19.0-5-amd64 and i tried to
prevent creating bug file for nonexisting package. Should i file another
bug and put a link to this report ?

št 18. 7. 2019 o 4:04 Ben Hutchings <ben@decadent.org.uk> napísal(a):

> Control: tag -1 moreinfo
>
> On Wed, 2019-07-17 at 01:27 +0200, m.alfaeko@gmail.com wrote:
> > Package: linux-image-amd64
> > Version: 4.19+105
> > Severity: important
> >
> > Hi.
> >
> > Im currently running debian buster kernel and i experienced some
> segfaults.
> > Segfaults are random, which prevents me from pinpointing the trigger.
> > First i tried disabling overcommit on memory, the behavior stoped.
> > Today it started during installing updates for libreoffice. Two first
> > segfaults were caused by xfdesktop, the two more with gmain.
> > Another odd thing is that the error is in libglib and the code is
> completly
> > identical. The RAM was tested with memtest86+, memtester. Previous
> release
> > with backport kernel was working perfectly even with overcommit. I
> > guess there is a small chance of defective hw.
>
> Could it be overheating?
>
> > My next suspect is apparmor. Im going to use the system with disabled
> > apparmor to see if this problem persist.
>
> What about the out-of-tree module you are using?  Can you run without
> that?
>
> > Thank you
> >
> > I hope this helps make debian more stable and reliable.
> [...]
>
> Well, it isn't as helpful as it could be, because you chose to ignore
> the request to report a bug against linux-image-4.19.0-5-amd64.
>
> Ben.
>
> --
> Ben Hutchings
> Any sufficiently advanced bug is indistinguishable from a feature.
>
>
>

Thread

Bug#932250: linux-image-amd64: random segfaults without taking something down m.alfaeko@gmail.com - 2019-07-17 01:30 +0200
  Bug#932250: linux-image-amd64: adding segfault data m.alfaeko@gmail.com - 2019-07-17 01:50 +0200
    Bug#932250: linux-image-amd64: adding segfault data Ben Hutchings <ben@decadent.org.uk> - 2019-09-25 00:40 +0200
  Bug#932250: linux-image-amd64: random segfaults without taking something down Bernhard Übelacker <bernhardu@mailbox.org> - 2019-07-17 11:10 +0200
  Processed: Re: Bug#932250: linux-image-amd64: random segfaults  without taking something down "Debian Bug Tracking System" <owner@bugs.debian.org> - 2019-07-18 04:10 +0200
  Bug#932250: linux-image-amd64: random segfaults without taking something down Ben Hutchings <ben@decadent.org.uk> - 2019-07-18 04:10 +0200
  Bug#932250: Fwd: Bug#932250: linux-image-amd64: random segfaults without taking something down a a <m.alfaeko@gmail.com> - 2019-07-18 13:20 +0200
  Bug#932250: [Fwd: Re: Bug#932250: linux-image-amd64: random segfaults without taking something down] Ben Hutchings <ben@decadent.org.uk> - 2019-07-18 13:20 +0200
  Processed: Re: linux-image-amd64: adding segfault data "Debian Bug Tracking System" <owner@bugs.debian.org> - 2019-09-25 00:40 +0200
  Bug#932250: 932250 Paul Kerry <p.kerry@sheffield.ac.uk> - 2019-10-28 15:20 +0100
  Bug#932250: 932250 Paul Kerry <p.kerry@sheffield.ac.uk> - 2019-11-04 12:30 +0100
  Bug#932250: 932250 Paul Kerry <p.kerry@sheffield.ac.uk> - 2019-11-04 13:40 +0100
    Bug#932250: random segfaults Bernhard Übelacker <bernhardu@mailbox.org> - 2020-11-10 11:10 +0100
      Bug#932250: random segfaults Paul Kerry <p.kerry@sheffield.ac.uk> - 2020-11-10 11:40 +0100
        Bug#932250: random segfaults Salvatore Bonaccorso <carnil@debian.org> - 2020-11-13 10:30 +0100

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