[Bug 96318] New: drm/i915 crash on 4.6.0

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96318

            Bug ID: 96318
           Summary: drm/i915 crash on 4.6.0
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: marc at fite.cat
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 124250
  --> https://bugs.freedesktop.org/attachment.cgi?id=124250&action=edit
crash dump

GPU is hanging, attached there's the crash dump.

Seems related to issues with RC6 on 4.5.0 as well.

kuduk at xps13:~$ uname -a
Linux xps13 4.6.0-trunk-amd64 #1 SMP Debian 4.6-1~exp1 (2016-05-17) x86_64
GNU/Linux

kuduk at xps13:~$ lspci | grep -i vga
00:02.0 VGA compatible controller: Intel Corporation Sky Lake Integrated
Graphics (rev 0a)

kuduk at xps13:~$ cat /proc/cmdline 
BOOT_IMAGE=/vmlinuz-4.6.0-trunk-amd64 root=/dev/mapper/xps13--vg-root ro quiet


[25990.213735] [drm] stuck on render ring
[25990.214214] [drm] GPU HANG: ecode 9:0:0x85dffffb, in Xorg [1861], reason:
Ring hung, action: reset
[25990.214216] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[25990.214216] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[25990.214217] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[25990.214217] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[25990.214218] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[25990.216368] drm/i915: Resetting chip after gpu hang
[25991.221768] [drm] RC6 on
[25998.226092] [drm] stuck on render ring
[25998.226480] [drm] GPU HANG: ecode 9:0:0x85dffffb, in Xorg [1861], reason:
Ring hung, action: reset
[25998.226635] [drm:i915_set_reset_status [i915]] *ERROR* gpu hanging too fast,
banning!
[25998.228760] drm/i915: Resetting chip after gpu hang
[25999.234649] [drm] RC6 on

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