Bug#893320: libc6: libc-2.27.so causes segfaults in multiple programs
On 2018-03-18 01:00, Svein Engelsgjerd wrote:
> Package: libc6
> Version: 2.27
> Severity: normal
>
> Dear Maintainer,
>
> * What led up to the situation?
>
> I upgraded debain 'testing' today.
> The upgrade included libc and systemd as far as I remember.
Can you share the list of things that were upgraded? You can find that
information in /var/log/dpkg.log.
> After the upgrade Multiple programs and libraries segfaults for some reason.
> I believe this is caused by libc-2.27
>
> Examples:
> [ 1996.980004] show_signal_msg: 16 callbacks suppressed
> [ 1996.980007] gmain[1815]: segfault at ffffffffffffffff ip 00007f8240d2af3d sp 00007f8237924690 error 5 in libglib-2.0.so.0.5400.3[7f8240cc3000+111000]
> [ 1996.984537] traps: gdbus[1641] general protection ip:7f1bb2b425f9 sp:7f1babffed08 error:0 in libc-2.27.so[7f1bb2a56000+1b1000]
> [ 1996.986582] pasystray[1840]: segfault at 8 ip 00007f79a5366caa sp 00007ffc9dc41520 error 4 in libglib-2.0.so.0.5400.3[7f79a531c000+111000]
> [ 1997.005432] panel-29-xfce4-[1747]: segfault at 7f818f97331f ip 00007f730bbbf064 sp 00007ffef88b8e40 error 4 in libglib-2.0.so.0.5400.3[7f730bb77000+111000]
> [ 1997.008670] smart-notifier[1844]: segfault at ffffffffffffffff ip 00007f1e874ad9f3 sp 00007ffd65740e50 error 5 in libglib-2.0.so.0.5400.3[7f1e87463000+111000]
> [ 1997.015035] traps: gdbus[1865] general protection ip:7fc65581e5f9 sp:7fc643ffeac8 error:0 in libc-2.27.so[7fc655732000+1b1000]
> [ 2000.019533] perf: interrupt took too long (3930 > 3927), lowering kernel.perf_event_max_sample_rate to 50750
> [ 2020.774800] qpdfview[2098]: segfault at 4 ip 00007f32ffd31bb7 sp 00007fff3891bd70 error 6 in libQt5Widgets.so.5.9.2[7f32ff8f3000+614000]
> [ 3049.114858] xfce4-panel[1709]: segfault at 0 ip 00007ff3c6a7a9f3 sp 00007ffc97eefea0 error 4 in libglib-2.0.so.0.5400.3[7ff3c6a30000+111000]
> [ 3049.170745] traps: gdbus[1936] general protection ip:7f85b31225f9 sp:7f85abffed08 error:0 in libc-2.27.so[7f85b3036000+1b1000]
> [ 3049.175240] traps: gdbus[1920] general protection ip:7ffae2d1e5f9 sp:7ffadbffed08 error:0 in libc-2.27.so[7ffae2c32000+1b1000]
Half of the segfaults reported here actually happen outside of glibc.
The glibc ones all happen with gdbus in the poll syscall wrapper. Note
that gdbus is part of glib2.0, so your issue might actually have to do
with this package instead.
> LSM: AppArmor: enabled
I wonder if your issue can actually be caused by apparmor. You might
want to check for audit lines in /var/log/syslog. Alternatively you
might want to temporarily boot your system with apparmor disabled by
passing "apparmor=0 security=" on your kernel command line.
Aurelien
--
Aurelien Jarno GPG: 4096R/1DDD8C9B
aurelien@aurel32.net http://www.aurel32.net
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