^C[   41.770213] ------------[ cut here ]------------
[   41.774977] WARNING: CPU: 2 PID: 20 at drivers/gpu/drm/drm_atomic_helper.c:1032 drm_atomic_helper_wait_for_fences+0xec/0x10c
[   41.786288] Modules linked in:
[   41.789408] CPU: 2 PID: 20 Comm: kworker/2:0 Tainted: G        W       4.9.5-dirty #95
[   41.797346] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
[   41.803919] Workqueue: events drm_mode_rmfb_work_fn
[   41.808837] Backtrace:
[   41.811353] [<c010c334>] (dump_backtrace) from [<c010c5e0>] (show_stack+0x18/0x1c)
[   41.818952]  r7:00000000 r6:60000013 r5:00000000 r4:c0e25cac
[   41.824653] [<c010c5c8>] (show_stack) from [<c03f92b8>] (dump_stack+0xb4/0xe8)
[   41.831909] [<c03f9204>] (dump_stack) from [<c0124c6c>] (__warn+0xd8/0x104)
[   41.838901]  r9:c04cd998 r8:00000408 r7:00000009 r6:c0c3c484 r5:00000000 r4:00000000
[   41.846671] [<c0124b94>] (__warn) from [<c0124d4c>] (warn_slowpath_null+0x28/0x30)
[   41.854270]  r9:00000000 r8:00000000 r7:7fffffff r6:00000001 r5:ee56d980 r4:eebcc280
[   41.862049] [<c0124d24>] (warn_slowpath_null) from [<c04cd998>] (drm_atomic_helper_wait_for_fences+0xec/0x10c)
[   41.872088] [<c04cd8ac>] (drm_atomic_helper_wait_for_fences) from [<c04d0200>] (drm_atomic_helper_commit+0x8c/0xfc)
[   41.882553]  r10:ee56d980 r9:c0c02660 r8:ee8f9800 r7:ee8f9800 r6:00000000 r5:00000000
[   41.890401]  r4:ee56d980 r3:00000006
[   41.894017] [<c04d0174>] (drm_atomic_helper_commit) from [<c04f8d8c>] (imx_drm_atomic_commit+0x1f8/0x348)
[   41.903608]  r7:00000000 r6:ee8f9800 r5:ee56d980 r4:00000006
[   41.909306] [<c04f8b94>] (imx_drm_atomic_commit) from [<c04efb0c>] (drm_atomic_commit+0x54/0x60)
[   41.918120]  r10:c0c3ff7c r9:c0c02660 r8:ee8f9800 r7:ee8f6c18 r6:ee8f9800 r5:ee56d980
[   41.925967]  r4:00000000
[   41.928538] [<c04efab8>] (drm_atomic_commit) from [<c04d0768>] (drm_atomic_helper_set_config+0x80/0xa4)
[   41.937955]  r7:ee8f6c18 r6:ef0cde1c r5:00000000 r4:ee56d980
[   41.943631] [<c04d06e8>] (drm_atomic_helper_set_config) from [<c04e2444>] (drm_mode_set_config_internal+0x6c/0xfc)
[   41.953984]  r7:ee8f9c8c r6:ee8f9c80 r5:ee8f6c18 r4:00000000
[   41.959651] [<c04e23d8>] (drm_mode_set_config_internal) from [<c04e250c>] (drm_crtc_force_disable+0x38/0x40)
[   41.969483]  r7:ee8f9c8c r6:ee8f9c80 r5:eebc9240 r4:ee8f6c18
[   41.975153] [<c04e24d4>] (drm_crtc_force_disable) from [<c04f1368>] (drm_framebuffer_remove+0xd0/0x10c)
[   41.984555] [<c04f1298>] (drm_framebuffer_remove) from [<c04f13e4>] (drm_mode_rmfb_work_fn+0x40/0x50)
[   41.993782]  r10:00000001 r9:00000000 r8:ef7c2e00 r7:ef0cdea8 r6:ef7bf800 r5:ee4cbd48
[   42.001616]  r4:ee4cbd28 r3:eebc92c8
[   42.005208] [<c04f13a4>] (drm_mode_rmfb_work_fn) from [<c01400b0>] (process_one_work+0x198/0x4e0)
[   42.014084]  r5:ef03e000 r4:ee4cbd28
[   42.017669] [<c013ff18>] (process_one_work) from [<c0140438>] (worker_thread+0x40/0x574)
[   42.025767]  r10:ef03e000 r9:ef0cc000 r8:c0e04900 r7:ef7bf834 r6:00000008 r5:ef03e018
[   42.033599]  r4:ef7bf800
[   42.036144] [<c01403f8>] (worker_thread) from [<c0146bc0>] (kthread+0xd8/0xf8)
[   42.043373]  r10:00000000 r9:00000000 r8:00000000 r7:c01403f8 r6:ef03e000 r5:ef03d000
[   42.051205]  r4:00000000
[   42.053750] [<c0146ae8>] (kthread) from [<c0107df0>] (ret_from_fork+0x14/0x24)
[   42.060977]  r7:00000000 r6:00000000 r5:c0146ae8 r4:ef03d000
[   42.066709] ---[ end trace 6db0a9435b1947aa ]---