[Bug 87246] New: [ivb] WARN_ON(!plane->crtc)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87246

            Bug ID: 87246
           Summary: [ivb] WARN_ON(!plane->crtc)
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: chris at chris-wilson.co.uk
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

[   74.022726] WARNING: CPU: 0 PID: 664 at
drivers/gpu/drm/i915/intel_display.c:11930 intel_disable_plane+0x81/0x90()
[   74.022731] WARN_ON(!plane->crtc)
[   74.022735] CPU: 0 PID: 664 Comm: Xorg Tainted: G        W      3.18.0+ #156
[   74.022740] Hardware name: Intel Corporation 2012 Client Platform/Emerald
Lake 2, BIOS ACRVMBY1.86C.0078.P00.1201161002 01/16/2012
[   74.022743]  0000000000000009 ffff880251f03a48 ffffffff8156986c
0000000000003713
[   74.022754]  ffff880251f03a98 ffff880251f03a88 ffffffff8108ba3c
0000000000000000
[   74.022764]  ffff880255bab390 0000000000000001 0000000000000001
ffff880255bab000
[   74.022773] Call Trace:
[   74.022780]  [<ffffffff8156986c>] dump_stack+0x46/0x58
[   74.022786]  [<ffffffff8108ba3c>] warn_slowpath_common+0x7c/0xa0
[   74.022791]  [<ffffffff8108bad6>] warn_slowpath_fmt+0x46/0x50
[   74.022795]  [<ffffffff813d0c1f>] ? ironlake_crtc_disable+0x13f/0x790
[   74.022800]  [<ffffffff813c1791>] intel_disable_plane+0x81/0x90
[   74.022803]  [<ffffffff813cf46e>] ? ironlake_crtc_off+0xe/0x10
[   74.022807]  [<ffffffff813d20cf>] __intel_set_mode+0x8ef/0xb80
[   74.022811]  [<ffffffff813d81e9>] ? intel_crtc_set_config+0x109/0xfe0
[   74.022814]  [<ffffffff813d8ceb>] intel_crtc_set_config+0xc0b/0xfe0
[   74.022823]  [<ffffffff8135a6b6>] drm_mode_set_config_internal+0x66/0x100
[   74.022828]  [<ffffffff8135ac63>] drm_mode_setcrtc+0x283/0x570
[   74.022833]  [<ffffffff8134efa7>] drm_ioctl+0x197/0x660
[   74.022838]  [<ffffffff810b6538>] ? update_curr+0xe8/0x140
[   74.022842]  [<ffffffff810b4b29>] ? arch_vtime_task_switch+0x79/0xb0
[   74.022846]  [<ffffffff810b4503>] ? account_system_time+0x83/0x180
[   74.022850]  [<ffffffff81183e88>] do_vfs_ioctl+0x2c8/0x490
[   74.022856]  [<ffffffff810d26e3>] ? rcu_eqs_enter+0xa3/0xb0
[   74.022859]  [<ffffffff810b4115>] ? local_clock+0x25/0x30
[   74.022863]  [<ffffffff810b4475>] ? account_user_time+0x85/0x90
[   74.022866]  [<ffffffff81184091>] SyS_ioctl+0x41/0x80
[   74.022871]  [<ffffffff8156f416>] system_call_fastpath+0x16/0x1b

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