[CentOS] Kernel panic, CentOS 7.1503 fully updated, with executing gkrellm.
Lamar Owen
lowen at pari.edu
Thu Apr 2 14:33:06 UTC 2015
On 04/02/2015 07:29 AM, Marcelo Ricardo Leitner wrote:
> If it's that easy to reproduce, please grab the panic message or
> generate a vmcore through crashdump and report it at
> bugzilla.redhat.com against kernel component.
>
Thanks for the pointer with some details. I see that I have a bit to
learn. The first thing I need to do is reproduce it on other hardware.
I will say that I have experienced the same bug twice, but the first
time I thought it was a botched yum update with CR enabled (and me
having several packages installed from a mixed set of repos as well as
some hand-built RPMs in there), and that was with / on ext4. This
happened with / on xfs and an almost pristine install of the 20150228
rolling ISO updated to 1503. I use gkrellm as a quick visual dashboard
of system load, and it is useful in that context. I also have it in my
startup applications, so the kp happens immediately after logging in.
(Both times with the same /home on ext4 over LUKS.) The second time,
nautilus would not start on a reboot/re-login due to corruption of one
of its libraries (found in the 'tracker' package). So I am a bit loath
to hit this one again on my main machine, as I just don't have time this
week for another reinstall.
> You may be using an EPEL application but kernel shouldn't be panicking
> like that, specially if you're running it as an user.
>
Yeah, if gkrellm (run as a non-privileged user) can panic the kernel, a
non-gui app hitting the same bits can too (unless it's related to the
video card's driver). Pairing a non-privileged userland kp witha a
remote arbitrary code execution bug could be nasty. That's why I still
hope it's local to my machine. But now to try to reproduce on other
hardware. (for reference, hardware on which I saw the bug is a Dell
Precision M6500 with a Core i7-740QM and an AMD/ATI Firepro 7820M video,
with / on a Samsung PM830 SSD)
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