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[Bug 1529932] Re: X session crashes with EQ overflowing

To: desktop-packages@xxxxxxxxxxxxxxxxxxx
From: hardhu <qzerty@xxxxxxxxx>
Date: Wed, 30 Dec 2015 16:44:48 -0000
Reply-to: Bug 1529932 <1529932@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Today the same crash occurred, and this time I found nothing relevant in
/var/log/Xorg.0.log, but there is something in syslog:

Dec 30 17:34:44 eaglubuntu kernel: [ 1746.752093] radeon 0000:01:00.0: ring 0 stalled for more than 10496msec
Dec 30 17:34:44 eaglubuntu kernel: [ 1746.752110] radeon 0000:01:00.0: GPU lockup (current fence id 0x000000000000aca3 last fence id 0x000000000000aca7 on ring 0)
Dec 30 17:34:44 eaglubuntu kernel: [ 1746.943410] Failed to wait GUI idle while programming pipes. Bad things might happen.
Dec 30 17:34:45 eaglubuntu kernel: [ 1746.947896] radeon 0000:01:00.0: Saved 107 dwords of commands on ring 0.
Dec 30 17:34:45 eaglubuntu kernel: [ 1746.947916] radeon 0000:01:00.0: (r300_asic_reset:425) RBBM_STATUS=0x80010140
Dec 30 17:34:45 eaglubuntu kernel: [ 1747.449111] radeon 0000:01:00.0: (r300_asic_reset:444) RBBM_STATUS=0x80010140
Dec 30 17:34:45 eaglubuntu kernel: [ 1747.946237] radeon 0000:01:00.0: (r300_asic_reset:456) RBBM_STATUS=0x00000140
Dec 30 17:34:45 eaglubuntu kernel: [ 1747.946283] radeon 0000:01:00.0: GPU reset succeed
Dec 30 17:34:45 eaglubuntu kernel: [ 1747.946290] radeon 0000:01:00.0: GPU reset succeeded, trying to resume
Dec 30 17:34:45 eaglubuntu kernel: [ 1747.961690] radeon 0000:01:00.0: ffff880076fdec00 unpin not necessary
Dec 30 17:34:46 eaglubuntu kernel: [ 1747.969631] [drm] PCIE GART of 512M enabled (table at 0x00000000C8040000).
Dec 30 17:34:46 eaglubuntu kernel: [ 1747.969648] [drm] radeon: 2 quad pipes, 1 z pipes initialized.
Dec 30 17:34:46 eaglubuntu kernel: [ 1747.969657] radeon 0000:01:00.0: WB enabled
Dec 30 17:34:46 eaglubuntu kernel: [ 1747.969662] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 0x00000000a8000000 and cpu addr 0xffff880035750000
Dec 30 17:34:46 eaglubuntu kernel: [ 1747.969681] [drm] radeon: ring at 0x00000000A8001000
Dec 30 17:34:46 eaglubuntu kernel: [ 1747.969703] [drm] ring test succeeded in 1 usecs
Dec 30 17:35:37 eaglubuntu systemd[1]: Started Session 2 of user michelasso.
Dec 30 17:35:38 eaglubuntu dbus[550]: [system] Activating via systemd: service name='org.freedesktop.ConsoleKit' unit='console-kit-daemon.service'
Dec 30 17:35:38 eaglubuntu systemd[1]: Starting Console Manager...
Dec 30 17:35:38 eaglubuntu console-kit-daemon[7064]: (process:7127): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed
Dec 30 17:35:38 eaglubuntu console-kit-daemon[7064]: missing action
Dec 30 17:35:38 eaglubuntu dbus[550]: [system] Successfully activated service 'org.freedesktop.ConsoleKit'
Dec 30 17:35:38 eaglubuntu systemd[1]: Started Console Manager.
Dec 30 17:35:38 eaglubuntu console-kit-daemon[7064]: (process:7131): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed
Dec 30 17:35:38 eaglubuntu console-kit-daemon[7064]: missing action
Dec 30 17:36:13 eaglubuntu dhclient: PRC: Renewing lease on enp6s7.
Dec 30 17:36:13 eaglubuntu dhclient: XMT: Renew on enp6s7, interval 10260ms.
Dec 30 17:36:13 eaglubuntu dhclient: RCV: Reply message on enp6s7 from fe80::ea94:f6ff:fed4:4622.
Dec 30 17:36:14 eaglubuntu NetworkManager[530]: <info>    valid_lft -1
Dec 30 17:36:14 eaglubuntu NetworkManager[530]: <info>    preferred_lft -1
Dec 30 17:36:14 eaglubuntu NetworkManager[530]: <info>    address fdd5:636f:7401::125
Dec 30 17:36:14 eaglubuntu NetworkManager[530]: <info>    nameserver 'fdd5:636f:7401::1'
Dec 30 17:36:14 eaglubuntu NetworkManager[530]: <info>    domain search 'lan.'
Dec 30 17:36:14 eaglubuntu NetworkManager[530]: <info>  (enp6s7): DHCPv6 state changed bound -> bound
Dec 30 17:36:14 eaglubuntu dbus[550]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service'
Dec 30 17:36:14 eaglubuntu systemd[1]: Starting Network Manager Script Dispatcher Service...
Dec 30 17:36:14 eaglubuntu dbus[550]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
Dec 30 17:36:14 eaglubuntu systemd[1]: Started Network Manager Script Dispatcher Service.
Dec 30 17:36:14 eaglubuntu nm-dispatcher: Dispatching action 'dhcp6-change' for enp6s7
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092138] INFO: task Xorg:960 blocked for more than 120 seconds.
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092152]       Not tainted 4.2.0-22-generic #27-Ubuntu
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092157] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092162] Xorg            D ffff88007fc16640     0   960    906 0x00400004
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092174]  ffff88007b233918 0000000000000086 ffffffff81c13500 ffff880078a25780
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092182]  ffff880035683278 ffff88007b234000 ffff88007b233aa0 ffff88003569c000
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092189]  ffff88007b233a28 ffff88003569d490 ffff88007b233938 ffffffff817ec267
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092196] Call Trace:
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092214]  [<ffffffff817ec267>] schedule+0x37/0x80
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092225]  [<ffffffff817ef309>] schedule_timeout+0x189/0x250
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092340]  [<ffffffffc01e7b28>] ? radeon_sa_bo_new+0x78/0x480 [radeon]
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092395]  [<ffffffffc017bf96>] ? radeon_fence_process+0x16/0x40 [radeon]
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092449]  [<ffffffffc017c26c>] radeon_fence_wait_seq_timeout.constprop.8+0x22c/0x300 [radeon]
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092458]  [<ffffffff810bd190>] ? wake_atomic_t_function+0x60/0x60
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092512]  [<ffffffffc017c62f>] radeon_fence_wait+0x9f/0xe0 [radeon]
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092577]  [<ffffffffc01a02f9>] r100_ib_test+0x179/0x290 [radeon]
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092649]  [<ffffffffc023cd88>] radeon_ib_ring_tests+0x58/0xc0 [radeon]
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092698]  [<ffffffffc0162e30>] radeon_gpu_reset+0x240/0x330 [radeon]
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092759]  [<ffffffffc01923ee>] radeon_gem_handle_lockup.part.3+0xe/0x20 [radeon]
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092820]  [<ffffffffc01933af>] radeon_gem_wait_idle_ioctl+0xdf/0x130 [radeon]
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092881]  [<ffffffffc00a0495>] drm_ioctl+0x125/0x610 [drm]
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092943]  [<ffffffffc01932d0>] ? radeon_gem_busy_ioctl+0xf0/0xf0 [radeon]
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092955]  [<ffffffff8108a9e6>] ? __set_current_blocked+0x36/0x60
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092965]  [<ffffffff8101fe5c>] ? fpu__activate_curr+0x3c/0x80
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092974]  [<ffffffff8108aaa4>] ? signal_setup_done+0x74/0xc0
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.092981]  [<ffffffff810210be>] ? __fpu__restore_sig+0x9e/0x470
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.093028]  [<ffffffffc016004c>] radeon_drm_ioctl+0x4c/0x80 [radeon]
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.093037]  [<ffffffff81210aa5>] do_vfs_ioctl+0x295/0x480
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.093044]  [<ffffffff8102169d>] ? fpu__restore_sig+0x4d/0x60
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.093052]  [<ffffffff81210d09>] SyS_ioctl+0x79/0x90
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.093062]  [<ffffffff81015078>] ? sys_rt_sigreturn+0xc8/0xe0
Dec 30 17:37:38 eaglubuntu kernel: [ 1920.093072]  [<ffffffff817f02b2>] entry_SYSCALL_64_fastpath+0x16/0x75

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https://bugs.launchpad.net/bugs/1529932

Title:
  X session crashes with EQ overflowing

Status in xorg-server package in Ubuntu:
  New

Bug description:
  On my very old laptop, that is equipped with an Ati Mobility Radeon
  X700, sometimes (and, sadly, I have to use this word, because I found
  no regularity pattern for the occurrence of this bug) randomly the
  desktop session locks, that is I can only move the mouse pointer, but
  I cannot interact anymore with the desktop session. I am forced to
  login trough ssh from another pc and to restart the laptop.

  In Xorg.0.log I found these lines that are, in my opinion, related to
  the crash:

  (EE) [mi] EQ overflowing.  Additional events will be discarded until existing events are processed.
  (EE) 
  (EE) Backtrace:
  (EE) 0: /usr/bin/X (xorg_backtrace+0x4e) [0x5608e56a768e]
  (EE) 1: /usr/bin/X (mieqEnqueue+0x253) [0x5608e5689373]
  (EE) 2: /usr/bin/X (QueuePointerEvents+0x52) [0x5608e5563152]
  (EE) 3: /usr/bin/X (xf86PostMotionEvent+0xd6) [0x5608e559a026]
  (EE) 4: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7f5e497b3000+0x5322) [0x7f5e497b8322]
  (EE) 5: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7f5e497b3000+0x73d2) [0x7f5e497ba3d2]
  (EE) 6: /usr/bin/X (0x5608e54f3000+0x96ac8) [0x5608e5589ac8]
  (EE) 7: /usr/bin/X (0x5608e54f3000+0xbfc92) [0x5608e55b2c92]
  (EE) 8: /lib/x86_64-linux-gnu/libc.so.6 (0x7f5e522c9000+0x352f0) [0x7f5e522fe2f0]
  (EE) 9: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x7) [0x7f5e523c60b7]
  (EE) 10: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7f5e536ada08]
  (EE) 11: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmCommandWrite+0x1b) [0x7f5e536b06cb]
  (EE) 12: /usr/lib/x86_64-linux-gnu/libdrm_radeon.so.1 (0x7f5e4e3ad000+0x19c9) [0x7f5e4e3ae9c9]
  (EE) 13: /usr/lib/x86_64-linux-gnu/libdrm_radeon.so.1 (0x7f5e4e3ad000+0x1c0c) [0x7f5e4e3aec0c]
  (EE) 14: /usr/lib/xorg/modules/drivers/radeon_drv.so (0x7f5e4e5b9000+0x26236) [0x7f5e4e5df236]
  (EE) 15: /usr/lib/xorg/modules/libexa.so (0x7f5e4d973000+0x569b) [0x7f5e4d97869b]
  (EE) 16: /usr/lib/xorg/modules/libexa.so (0x7f5e4d973000+0x7e8f) [0x7f5e4d97ae8f]
  (EE) 17: /usr/lib/xorg/modules/libexa.so (0x7f5e4d973000+0x11953) [0x7f5e4d984953]
  (EE) 18: /usr/lib/xorg/modules/libexa.so (0x7f5e4d973000+0xe770) [0x7f5e4d981770]
  (EE) 19: /usr/bin/X (0x5608e54f3000+0x13ca51) [0x5608e562fa51]
  (EE) 20: /usr/lib/xorg/modules/libexa.so (0x7f5e4d973000+0xf74f) [0x7f5e4d98274f]
  (EE) 21: /usr/bin/X (0x5608e54f3000+0x1332a2) [0x5608e56262a2]
  (EE) 22: /usr/bin/X (0x5608e54f3000+0x5818f) [0x5608e554b18f]
  (EE) 23: /usr/bin/X (0x5608e54f3000+0x5c34b) [0x5608e554f34b]
  (EE) 24: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf0) [0x7f5e522e9a40]
  (EE) 25: /usr/bin/X (_start+0x29) [0x5608e55396c9]
  (EE) 
  (EE) [mi] These backtraces from mieqEnqueue may point to a culprit higher up the stack.
  (EE) [mi] mieq is *NOT* the cause.  It is a victim.
  (EE) [mi] EQ overflow continuing.  100 events have been dropped.
  (EE) 
  (EE) Backtrace:
  (EE) 0: /usr/bin/X (xorg_backtrace+0x4e) [0x5608e56a768e]
  (EE) 1: /usr/bin/X (QueuePointerEvents+0x52) [0x5608e5563152]
  (EE) 2: /usr/bin/X (xf86PostMotionEvent+0xd6) [0x5608e559a026]
  (EE) 3: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7f5e497b3000+0x5322) [0x7f5e497b8322]
  (EE) 4: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7f5e497b3000+0x73d2) [0x7f5e497ba3d2]
  (EE) 5: /usr/bin/X (0x5608e54f3000+0x96ac8) [0x5608e5589ac8]
  (EE) 6: /usr/bin/X (0x5608e54f3000+0xbfc92) [0x5608e55b2c92]
  (EE) 7: /lib/x86_64-linux-gnu/libc.so.6 (0x7f5e522c9000+0x352f0) [0x7f5e522fe2f0]
  (EE) 8: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x7) [0x7f5e523c60b7]
  (EE) 9: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7f5e536ada08]
  (EE) 10: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmCommandWrite+0x1b) [0x7f5e536b06cb]
  (EE) 11: /usr/lib/x86_64-linux-gnu/libdrm_radeon.so.1 (0x7f5e4e3ad000+0x19c9) [0x7f5e4e3ae9c9]
  (EE) 12: /usr/lib/x86_64-linux-gnu/libdrm_radeon.so.1 (0x7f5e4e3ad000+0x1c0c) [0x7f5e4e3aec0c]
  (EE) 13: /usr/lib/xorg/modules/drivers/radeon_drv.so (0x7f5e4e5b9000+0x26236) [0x7f5e4e5df236]
  (EE) 14: /usr/lib/xorg/modules/libexa.so (0x7f5e4d973000+0x569b) [0x7f5e4d97869b]
  (EE) 15: /usr/lib/xorg/modules/libexa.so (0x7f5e4d973000+0x7e8f) [0x7f5e4d97ae8f]
  (EE) 16: /usr/lib/xorg/modules/libexa.so (0x7f5e4d973000+0x11953) [0x7f5e4d984953]
  (EE) 17: /usr/lib/xorg/modules/libexa.so (0x7f5e4d973000+0xe770) [0x7f5e4d981770]
  (EE) 18: /usr/bin/X (0x5608e54f3000+0x13ca51) [0x5608e562fa51]
  (EE) 19: /usr/lib/xorg/modules/libexa.so (0x7f5e4d973000+0xf74f) [0x7f5e4d98274f]
  (EE) 20: /usr/bin/X (0x5608e54f3000+0x1332a2) [0x5608e56262a2]
  (EE) 21: /usr/bin/X (0x5608e54f3000+0x5818f) [0x5608e554b18f]
  (EE) 22: /usr/bin/X (0x5608e54f3000+0x5c34b) [0x5608e554f34b]
  (EE) 23: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf0) [0x7f5e522e9a40]
  (EE) 24: /usr/bin/X (_start+0x29) [0x5608e55396c9]
  (EE) 
  [   335.003] [mi] Increasing EQ size to 1024 to prevent dropped events.
  [   335.005] [mi] EQ processing has resumed after 151 dropped events.
  [   335.005] [mi] This may be caused my a misbehaving driver monopolizing the server's resources.
  [   377.274] failed to map pixmap: -1

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References

[Bug 1529932] [NEW] X session crashes with EQ overflowing
From: hardhu, 2015-12-29