[Bug 90291] X freeze/lockup out of nowhere

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sun May 3 01:27:30 PDT 2015


            Bug ID: 90291
           Summary: X freeze/lockup out of nowhere
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Radeon
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: ancoron at chaoslayer.de

Created attachment 115519
  --> https://bugs.freedesktop.org/attachment.cgi?id=115519&action=edit
Xorg.0.log of the crashed session

I experienced a lockup/freeze without any specific reason.

Operating system: Kubuntu 14.10
Linux Kernel: 3.19.0
libglamor version: 0.6.0+git20140801.347ef4f0-0ubuntu0sarvatt
libdrm-radeon version: 2.4.60+git20150416.0d78b37b-0ubuntu0ricotz2~utopic
xserver/radeon version: 7.4.99+git20140806.fbf575cb-0ubuntu0sarvatt3
MESA version: 10.6.0~git20150423.1

At the time of the hang I had started some rsync copying quite some data
between two remote NFS mounts on different servers. When X freeze'd, the
display went black and monitors turned into standby. Changing to another
terminal was not possible, although keys like NumLock still reacted.

In addition, all other processes - even foreground processes inside the X
sessions' terminal windows - continued to run (like the rsync).

The actual backtrace of the X freeze (debugging symbols where not installed up
to now, sorry):

(EE) 0: /usr/bin/X (xorg_backtrace+0x56) [0x7ff7b4c1c986]
(EE) 1: /usr/bin/X (0x7ff7b4a66000+0x1bab69) [0x7ff7b4c20b69]
(EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7ff7b2798000+0x36eb0)
(EE) 3: /lib/x86_64-linux-gnu/libc.so.6 (0x7ff7b2798000+0x98168)
(EE) 4: /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so (0x7ff7ac742000+0x16e7ce)
(EE) 5: /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so (0x7ff7ac742000+0x16ebd2)
(EE) 6: /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so (0x7ff7ac742000+0x16f51a)
(EE) 7: /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so (0x7ff7ac742000+0x1c604f)
(EE) 8: /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so (0x7ff7ac742000+0x1604fa)
(EE) 9: /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so (0x7ff7ac742000+0x16076a)
(EE) 10: /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
(0x7ff7ac742000+0x160a78) [0x7ff7ac8a2a78]
(EE) 11: /usr/lib/xorg/modules/libglamoregl.so (0x7ff7ade2a000+0x223e4)
(EE) 12: /usr/lib/xorg/modules/libglamoregl.so (0x7ff7ade2a000+0x225d2)
(EE) 13: /usr/lib/xorg/modules/libglamoregl.so (0x7ff7ade2a000+0x13b31)
(EE) 14: /usr/lib/xorg/modules/libglamoregl.so (0x7ff7ade2a000+0x13f0a)
(EE) 15: /usr/bin/X (0x7ff7b4a66000+0x140103) [0x7ff7b4ba6103]
(EE) 16: /usr/bin/X (0x7ff7b4a66000+0x53cd0) [0x7ff7b4ab9cd0]
(EE) 17: /usr/bin/X (0x7ff7b4a66000+0x57077) [0x7ff7b4abd077]
(EE) 18: /usr/bin/X (0x7ff7b4a66000+0x5b286) [0x7ff7b4ac1286]
(EE) 19: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5)
(EE) 20: /usr/bin/X (0x7ff7b4a66000+0x456ae) [0x7ff7b4aab6ae]
(EE) Bus error at address 0x7ff7b4914000
Fatal server error:
(EE) Caught signal 7 (Bus error). Server aborting

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