[Intel-gfx] 3.13.1 - WARNING at drivers/gpu/drm/i915/i915_irq.c:1240

[Thomas Meyer]

Am Dienstag, den 04.02.2014, 21:17 +0100 schrieb Daniel Vetter:
> On Tue, Feb 04, 2014 at 08:37:02PM +0100, Thomas Meyer wrote:
> > 
> > Hi,
> > 
> > I see a *lot* of these warning in 3.13.1.
> > 3.12.x never showed this problem.
> > Any ideas?!
> 
> Can you please try latest the drm-intel-nightly git branch from
> git://anongit.freedesktop.org/drm-intel ?
> 
> If that one's still affected then please boot with drm.debug=0xe added to
> your kernel cmdline, reproduce the WARN and attach the complete dmesg.
> 

Hi,

with 3.13.0-drm-00890-g4055ebc (drm-intel-nightly) I get these warnings:

[    0.550068] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    0.550070] [drm] Driver supports precise vblank timestamp query.
[    0.550146] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
[    0.621056] [drm:i965_irq_handler] *ERROR* pipe A underrun
[    0.860335] fbcon: inteldrmfb (fb0) is primary device
[    0.940094] ------------[ cut here ]------------
[    0.940103] WARNING: CPU: 0 PID: 1 at drivers/gpu/drm/i915/intel_panel.c:714 i965_enable_backlight+0x12a/0x150()
[    0.940103] backlight already enabled
[    0.940105] Modules linked in:
[    0.940109] CPU: 0 PID: 1 Comm: swapper Not tainted 3.13.0-drm-00890-g4055ebc #122
[    0.940110] Hardware name: Acer Aspire 1810T/JM11-MS, BIOS v1.3310 03/25/2010
[    0.940113]  0000000000000009 ffff8802368a1448 ffffffff81546104 ffff8802368a1480
[    0.940115]  ffffffff810391fc ffff880234ff4000 0000000000000000 ffff880234fb8400
[    0.940118]  00000000c0000000 ffff880236a11c00 ffff8802368a14e0 ffffffff81039267
[    0.940119] Call Trace:
[    0.940125]  [<ffffffff81546104>] dump_stack+0x19/0x1b
[    0.940129]  [<ffffffff810391fc>] warn_slowpath_common+0x6c/0x90
[    0.940132]  [<ffffffff81039267>] warn_slowpath_fmt+0x47/0x50
[    0.940135]  [<ffffffff81547f09>] ? schedule_timeout+0xf9/0x190
[    0.940138]  [<ffffffff8136f5da>] i965_enable_backlight+0x12a/0x150
[    0.940141]  [<ffffffff813875f0>] ? gen4_write64+0x30/0x30
[    0.940144]  [<ffffffff81370576>] intel_panel_enable_backlight+0x96/0xd0
[    0.940146]  [<ffffffff8135a7b8>] intel_enable_lvds+0x158/0x170
[    0.940148]  [<ffffffff813875f0>] ? gen4_write64+0x30/0x30
[    0.940152]  [<ffffffff8134f151>] i9xx_crtc_enable+0x2f1/0x420
[    0.940155]  [<ffffffff81351a3f>] __intel_set_mode+0x8af/0x1660
[    0.940159]  [<ffffffff81354b61>] intel_set_mode+0x11/0x30
[    0.940162]  [<ffffffff81355614>] intel_crtc_set_config+0x984/0xc70
[    0.940165]  [<ffffffff812dd768>] ? set_inverse_trans_unicode.isra.5+0xb8/0xd0
[    0.940169]  [<ffffffff8130f27d>] drm_mode_set_config_internal+0x5d/0xe0
[    0.940173]  [<ffffffff81300059>] drm_fb_helper_set_par+0x69/0xf0
[    0.940177]  [<ffffffff812814c4>] fbcon_init+0x504/0x580
[    0.940180]  [<ffffffff812ded33>] visual_init+0xb3/0x110
[    0.940183]  [<ffffffff812e12a3>] do_bind_con_driver+0x153/0x320
[    0.940186]  [<ffffffff812e1a44>] do_take_over_console+0x114/0x1c0
[    0.940188]  [<ffffffff8127ce4b>] do_fbcon_takeover+0x5b/0xc0
[    0.940191]  [<ffffffff8128202d>] fbcon_event_notify+0x60d/0x720
[    0.940194]  [<ffffffff8105841c>] notifier_call_chain+0x4c/0x70
[    0.940197]  [<ffffffff81058768>] __blocking_notifier_call_chain+0x48/0x70
[    0.940200]  [<ffffffff810587a1>] blocking_notifier_call_chain+0x11/0x20
[    0.940204]  [<ffffffff81272a16>] fb_notifier_call_chain+0x16/0x20
[    0.940207]  [<ffffffff81274996>] register_framebuffer+0x1e6/0x320
[    0.940211]  [<ffffffff812ffd47>] drm_fb_helper_initial_config+0x327/0x500
[    0.940214]  [<ffffffff81357e68>] ? intel_modeset_setup_hw_state+0x8e8/0xbe0
[    0.940217]  [<ffffffff810f4074>] ? __kmalloc+0xc4/0xf0
[    0.940220]  [<ffffffff810f414c>] ? kmem_cache_alloc+0xac/0xb0
[    0.940224]  [<ffffffff8138e38c>] intel_fbdev_initial_config+0x1c/0x20
[    0.940227]  [<ffffffff813218b1>] i915_driver_load+0xda1/0xde0
[    0.940231]  [<ffffffff81309696>] drm_dev_register+0x76/0x160
[    0.940234]  [<ffffffff8130ba4b>] drm_get_pci_dev+0x9b/0x210
[    0.940237]  [<ffffffff8131de96>] i915_pci_probe+0x36/0x50
[    0.940240]  [<ffffffff8125a6ec>] pci_device_probe+0x7c/0xe0
[    0.940244]  [<ffffffff8139c1dd>] driver_probe_device+0x6d/0x230
[    0.940247]  [<ffffffff8139c46b>] __driver_attach+0x8b/0x90
[    0.940250]  [<ffffffff8139c3e0>] ? __device_attach+0x40/0x40
[    0.940253]  [<ffffffff8139a513>] bus_for_each_dev+0x63/0xa0
[    0.940256]  [<ffffffff8139bd39>] driver_attach+0x19/0x20
[    0.940258]  [<ffffffff8139b9a0>] bus_add_driver+0x170/0x220
[    0.940262]  [<ffffffff817e41b8>] ? drm_core_init+0x109/0x109
[    0.940265]  [<ffffffff8139ca5f>] driver_register+0x5f/0xf0
[    0.940268]  [<ffffffff817e41b8>] ? drm_core_init+0x109/0x109
[    0.940271]  [<ffffffff81258e6a>] __pci_register_driver+0x3a/0x40
[    0.940273]  [<ffffffff8130bcd5>] drm_pci_init+0x115/0x130
[    0.940276]  [<ffffffff817e41b8>] ? drm_core_init+0x109/0x109
[    0.940279]  [<ffffffff817e4222>] i915_init+0x6a/0x6c
[    0.940281]  [<ffffffff8100030a>] do_one_initcall+0x10a/0x160
[    0.940284]  [<ffffffff81052e38>] ? parse_args+0x1e8/0x320
[    0.940287]  [<ffffffff817baf7c>] kernel_init_freeable+0x142/0x1d1
[    0.940290]  [<ffffffff817ba80e>] ? do_early_param+0x88/0x88
[    0.940292]  [<ffffffff8153f790>] ? rest_init+0x80/0x80
[    0.940295]  [<ffffffff8153f799>] kernel_init+0x9/0x120
[    0.940297]  [<ffffffff8154ba7a>] ret_from_fork+0x7a/0xb0
[    0.940300]  [<ffffffff8153f790>] ? rest_init+0x80/0x80
[    0.940305] ---[ end trace 529feadd43242174 ]---
[    1.002905] Console: switching to colour frame buffer device 170x48

And this one, but I'm not sure if this one is related:

[    1.886833] ata2: SATA link down (SStatus 0 SControl 300)
[    1.920205] irq 16: nobody cared (try booting with the "irqpoll" option)
[    1.920269] CPU: 0 PID: 56 Comm: irq/16-uhci_hcd Tainted: G        W    3.13.0-drm-00890-g4055ebc #122
[    1.920271] Hardware name: Acer Aspire 1810T/JM11-MS, BIOS v1.3310 03/25/2010
[    1.920274]  ffff880236a11758 ffff880234a0de28 ffffffff81546104 ffff880234a0de48
[    1.920279]  ffffffff81072984 ffff880236a11700 0000000000000010 ffff880234a0de88
[    1.920282]  ffffffff81072c01 0000000000000246 ffff8802349ddae0 ffff880236a11700
[    1.920286] Call Trace:
[    1.920295]  [<ffffffff81546104>] dump_stack+0x19/0x1b
[    1.920300]  [<ffffffff81072984>] __report_bad_irq.isra.7+0x24/0xc0
[    1.920304]  [<ffffffff81072c01>] note_interrupt+0x191/0x1e0
[    1.920308]  [<ffffffff81071610>] ? irq_thread_fn+0x40/0x40
[    1.920312]  [<ffffffff8107186d>] irq_thread+0x11d/0x120
[    1.920316]  [<ffffffff81071690>] ? wake_threads_waitq.part.30+0x30/0x30
[    1.920320]  [<ffffffff81071750>] ? irq_thread_dtor+0xc0/0xc0
[    1.920324]  [<ffffffff81054dbb>] kthread+0xcb/0xf0
[    1.920328]  [<ffffffff81054cf0>] ? kthread_worker_fn+0x170/0x170
[    1.920333]  [<ffffffff8154ba7a>] ret_from_fork+0x7a/0xb0
[    1.920337]  [<ffffffff81054cf0>] ? kthread_worker_fn+0x170/0x170
[    1.920339] handlers:
[    1.920361] [<ffffffff81071000>] irq_default_primary_handler threaded [<ffffffff813f11a0>] usb_hcd_irq
[    1.920438] [<ffffffff81071000>] irq_default_primary_handler threaded [<ffffffff813f11a0>] usb_hcd_irq
[    1.920513] Disabling IRQ #16