segfault in i965_dri.so

[tomdean]

> lsb_release -rd
Description: Ubuntu 18.04.2 LTS
Release: 18.04

While running simple_ra and doing other things so simple_ra is not always in totally in the foreground,

Aug 6 08:17:57 Meerkat kernel: [57269.891310] python2[9124]: segfault at 20 ip 00007f0834c979e4 sp 00007fff73b34f80 error 6 in i965_dri.so[7f0834655000+a6a000]
Aug 6 08:17:57 Meerkat kernel: [57269.891321] Code: 84 00 00 00 00 00 84 c9 74 7c f3 0f 10 0a f3 0f 10 42 04 0f 2e c8 0f 86 da 00 00 00 66 0f 7e c9 31 f6 0f 1f 40 00 48 83 c2 18 <89> 30 89 48 04 48 83 c0 08 48 39 d7 74 6e 80 bb 5b 97 00 00 00 0f

I had this problem several times. It occurs after simple_ra runs for about an hour. During the hour when simple_ra is running, it is sometimes on top, sometimes partially in view, sometimes minimalized.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-5.0.0-23-generic 5.0.0-23.24~18.04.1
ProcVersionSignature: Ubuntu 5.0.0-23.24~18.04.1-generic 5.0.15
Uname: Linux 5.0.0-23-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Aug 6 08:57:24 2019
SourcePackage: linux-signed-hwe
UpgradeStatus: Upgraded to bionic on 2018-10-19 (290 days ago)

[tomdean (tomdean)]

This does not seem to happen with the 4.15.0-55-generic kernel. I allowed simple_ra to run for several hours with the 4.15.0-55-generic kernel.

[tomdean (tomdean)]

On 8/6/19 9:08 AM, tomdean wrote:
> This does not seem to happen with the 4.15.0-55-generic kernel. I
> allowed simple_ra to run for several hours with the 4.15.0-55-generic
> kernel.
>

Update:
 > uname -a
Linux Meerkat 4.15.0-55-generic #60-Ubuntu SMP Tue Jul 2 18:22:20 UTC
2019 x86_64 x86_64 x86_64 GNU/Linux

After running simple_ra for approx 6 hours,
Aug 6 20:27:25 Meerkat kernel: [25816.744943] python2[6866]: segfault
at 40 ip 00007f5ff38b11c6 sp 00007ffdbf5616e0 error 6 in
i965_dri.so[7f5ff3271000+a6a000]

So, the problem does happen with the 4.15.0-55-generic kernel.