[Bug 96554] BUG: unable to handle kernel NULL pointer dereference at 0000000000000470

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96554

Jani Nikula <jani.nikula at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |thatslyude at gmail.com
      i915 features|display/eDP                 |display/DP MST

--- Comment #2 from Jani Nikula <jani.nikula at intel.com> ---
Jun 16 13:35:28 greger kernel: Call Trace:
Jun 16 13:35:28 greger kernel:  [<ffffffffa01ada75>]
intel_mst_disable_dp+0x45/0x80 [i915]
Jun 16 13:35:28 greger kernel:  [<ffffffffa0180551>]
haswell_crtc_disable+0x171/0x330 [i915]
Jun 16 13:35:28 greger kernel:  [<ffffffffa0188e17>]
intel_atomic_commit+0x3f7/0x1460 [i915]
Jun 16 13:35:28 greger kernel:  [<ffffffff815d234f>] ?
__ww_mutex_lock+0x4f/0x90
Jun 16 13:35:28 greger kernel:  [<ffffffffa005595d>] ?
drm_atomic_check_only+0x18d/0x610 [drm]
Jun 16 13:35:28 greger kernel:  [<ffffffffa0055436>] ?
drm_atomic_set_crtc_for_connector+0x96/0x100 [drm]
Jun 16 13:35:28 greger kernel:  [<ffffffffa0055e17>]
drm_atomic_commit+0x37/0x60 [drm]
Jun 16 13:35:28 greger kernel:  [<ffffffffa00c1198>]
restore_fbdev_mode+0x238/0x260 [drm_kms_helper]
Jun 16 13:35:28 greger kernel:  [<ffffffffa00c3834>]
drm_fb_helper_restore_fbdev_mode_unlocked+0x34/0x80 [drm_kms_helper]
Jun 16 13:35:28 greger kernel:  [<ffffffffa00c38ad>]
drm_fb_helper_set_par+0x2d/0x50 [drm_kms_helper]
Jun 16 13:35:28 greger kernel:  [<ffffffffa00c37a8>]
drm_fb_helper_hotplug_event+0xd8/0x130 [drm_kms_helper]
Jun 16 13:35:28 greger kernel:  [<ffffffffa00c3857>]
drm_fb_helper_restore_fbdev_mode_unlocked+0x57/0x80 [drm_kms_helper]
Jun 16 13:35:28 greger kernel:  [<ffffffffa01a49f2>]
intel_fbdev_restore_mode+0x22/0x80 [i915]
Jun 16 13:35:28 greger kernel:  [<ffffffffa01cf7de>]
i915_driver_lastclose+0xe/0x20 [i915]
Jun 16 13:35:28 greger kernel:  [<ffffffffa0038fae>] drm_lastclose+0x2e/0x120
[drm]
Jun 16 13:35:28 greger kernel:  [<ffffffffa003939a>] drm_release+0x2fa/0x4d0
[drm]
Jun 16 13:35:28 greger kernel:  [<ffffffff811fa6af>] __fput+0x9f/0x1e0
Jun 16 13:35:28 greger kernel:  [<ffffffff811fa82e>] ____fput+0xe/0x10
Jun 16 13:35:28 greger kernel:  [<ffffffff81097143>] task_work_run+0x83/0xb0
Jun 16 13:35:28 greger kernel:  [<ffffffff8107db74>] do_exit+0x314/0xb70
Jun 16 13:35:28 greger kernel:  [<ffffffff8107e44b>] do_group_exit+0x3b/0xb0
Jun 16 13:35:28 greger kernel:  [<ffffffff8108908d>] get_signal+0x26d/0x650
Jun 16 13:35:28 greger kernel:  [<ffffffff810fa4a0>] ? futex_wake+0x90/0x170
Jun 16 13:35:28 greger kernel:  [<ffffffff8102df87>] do_signal+0x37/0x6c0
Jun 16 13:35:28 greger kernel:  [<ffffffff811a8d25>] ?
handle_mm_fault+0xc45/0x1fa0
Jun 16 13:35:28 greger kernel:  [<ffffffff81003651>]
exit_to_usermode_loop+0xa1/0xc0
Jun 16 13:35:28 greger kernel:  [<ffffffff81003b9e>]
syscall_return_slowpath+0x4e/0x60
Jun 16 13:35:28 greger kernel:  [<ffffffff815d4bfa>]
entry_SYSCALL_64_fastpath+0xa2/0xa4

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