Bug 89305 - WARNING: CPU: 0 PID: 3200 at drivers/gpu/drm/i915/i915_gem.c:4285 with Linux v3.19-8975-g3d883483dc0a
Summary: WARNING: CPU: 0 PID: 3200 at drivers/gpu/drm/i915/i915_gem.c:4285 with Linux ...
Status: CLOSED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: DRI git
Hardware: Other All
: medium normal
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-02-24 18:58 UTC by Josh Boyer
Modified: 2017-02-24 06:38 UTC (History)
2 users (show)

See Also:
i915 platform: IVB
i915 features: display/atomic

Attachments

Description Josh Boyer 2015-02-24 18:58:45 UTC 
We got a report[1] of the following backtrace with Linux v3.19-8975-g3d883483dc0a (just before 4.0-rc1).  The user said they were switching the display with Mutter/Wayland or weston.

Feb 22 11:14:03 odvarok kernel: ------------[ cut here ]------------
Feb 22 11:14:03 odvarok kernel: WARNING: CPU: 0 PID: 3200 at drivers/gpu/drm/i915/i915_gem.c:4285 i915_gem_object_unpin_fence+0x75/0xa0 [i915]()
Feb 22 11:14:03 odvarok kernel: WARN_ON(dev_priv->fence_regs[obj->fence_reg].pin_count <= 0)
Feb 22 11:14:03 odvarok kernel: Modules linked in: bnep bluetooth fuse ccm joydev wacom_w8001 arc4 iwl3945 iwlegacy mac80211 kvm_intel snd_hda_codec_analog snd_hda_codec_generic iTCO_wdt iTCO_vendor_support kvm ppdev snd_hda_intel snd_hda_controller snd_hda_codec cfg80211 serio_raw i2c_i801 snd_hwdep snd_seq lpc_ich snd_seq_device mfd_core snd
Feb 22 11:14:03 odvarok kernel: CPU: 0 PID: 3200 Comm: weston Tainted: G        W       3.20.0-0.rc0.git10.1.fc22.x86_64 #1
Feb 22 11:14:03 odvarok kernel: Hardware name: LENOVO 7762AS1/7762AS1, BIOS 7SET39WW (1.25 ) 03/22/2011
Feb 22 11:14:03 odvarok kernel:  0000000000000000 00000000073741d7 ffff8800b81ff5f8 ffffffff81877630
Feb 22 11:14:03 odvarok kernel:  0000000000000000 ffff8800b81ff650 ffff8800b81ff638 ffffffff810ab3ca
Feb 22 11:14:03 odvarok kernel:  ffff8800b46ba600 ffff88007d090000 ffff8800b416fe00 ffffffffa0283f60
Feb 22 11:14:03 odvarok kernel: Call Trace:
Feb 22 11:14:03 odvarok kernel:  [<ffffffff81877630>] dump_stack+0x4c/0x65
Feb 22 11:14:03 odvarok kernel:  [<ffffffff810ab3ca>] warn_slowpath_common+0x8a/0xc0
Feb 22 11:14:03 odvarok kernel:  [<ffffffff810ab455>] warn_slowpath_fmt+0x55/0x70
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa023bf67>] ? intel_cleanup_plane_fb+0x37/0x80 [i915]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa01ee645>] i915_gem_object_unpin_fence+0x75/0xa0 [i915]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa022f9c5>] intel_unpin_fb_obj+0x25/0x60 [i915]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa023bf6f>] intel_cleanup_plane_fb+0x3f/0x80 [i915]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa014393e>] drm_plane_helper_commit+0x1fe/0x300 [drm_kms_helper]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa0143b8c>] drm_plane_helper_disable+0x5c/0xb0 [drm_kms_helper]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa0233ee3>] __intel_set_mode+0x323/0xb90 [i915]
Feb 22 11:14:03 odvarok kernel:  [<ffffffff8124b45c>] ? rcu_read_lock_sched_held+0x6c/0x80
Feb 22 11:14:03 odvarok kernel:  [<ffffffff8124f645>] ? __kmalloc+0x205/0x2d0
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa023b947>] intel_crtc_set_config+0xca7/0x1020 [i915]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa00bc037>] ? drm_atomic_state_free+0x27/0x60 [drm]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa00ab7e9>] drm_mode_set_config_internal+0x69/0x120 [drm]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa014c908>] restore_fbdev_mode+0xc8/0xf0 [drm_kms_helper]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa014e969>] drm_fb_helper_restore_fbdev_mode_unlocked+0x29/0x80 [drm_kms_helper]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa014e9e2>] drm_fb_helper_set_par+0x22/0x50 [drm_kms_helper]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa024b7aa>] intel_fbdev_set_par+0x1a/0x60 [i915]
Feb 22 11:14:03 odvarok kernel:  [<ffffffff814a615c>] fb_set_var+0x23c/0x4a0
Feb 22 11:14:03 odvarok kernel:  [<ffffffff8149baac>] fbcon_blank+0x34c/0x390
Feb 22 11:14:03 odvarok kernel:  [<ffffffff8153d502>] do_unblank_screen+0xe2/0x1f0
Feb 22 11:14:03 odvarok kernel:  [<ffffffff815319b1>] complete_change_console+0x61/0xf0
Feb 22 11:14:03 odvarok kernel:  [<ffffffff8153221a>] vt_ioctl+0x7da/0x14c0
Feb 22 11:14:03 odvarok kernel:  [<ffffffff8110386f>] ? lock_release_holdtime.part.29+0xf/0x200
Feb 22 11:14:03 odvarok kernel:  [<ffffffff81523e29>] tty_ioctl+0x449/0xe00
Feb 22 11:14:03 odvarok kernel:  [<ffffffff813a7be5>] ? inode_has_perm.isra.48+0x55/0xa0
Feb 22 11:14:03 odvarok kernel:  [<ffffffff8128cd68>] do_vfs_ioctl+0x2e8/0x530
Feb 22 11:14:03 odvarok kernel:  [<ffffffff8128d031>] SyS_ioctl+0x81/0xa0
Feb 22 11:14:03 odvarok kernel:  [<ffffffff81880ba9>] system_call_fastpath+0x12/0x17
Feb 22 11:14:03 odvarok kernel: ---[ end trace 804a0e2e3e91ca24 ]---
Feb 22 11:14:03 odvarok kernel: ------------[ cut here ]------------
Feb 22 11:14:03 odvarok kernel: kernel BUG at drivers/gpu/drm/i915/i915_gem.c:4257!
Feb 22 11:14:03 odvarok kernel: invalid opcode: 0000 [#1] SMP 
Feb 22 11:14:03 odvarok kernel: Modules linked in: bnep bluetooth fuse ccm joydev wacom_w8001 arc4 iwl3945 iwlegacy mac80211 kvm_intel snd_hda_codec_analog snd_hda_codec_generic iTCO_wdt iTCO_vendor_support kvm ppdev snd_hda_intel snd_hda_controller snd_hda_codec cfg80211 serio_raw i2c_i801 snd_hwdep snd_seq lpc_ich snd_seq_device mfd_core snd
Feb 22 11:14:03 odvarok kernel: CPU: 0 PID: 3200 Comm: weston Tainted: G        W       3.20.0-0.rc0.git10.1.fc22.x86_64 #1
Feb 22 11:14:03 odvarok kernel: Hardware name: LENOVO 7762AS1/7762AS1, BIOS 7SET39WW (1.25 ) 03/22/2011
Feb 22 11:14:03 odvarok kernel: task: ffff8800b77b34a0 ti: ffff8800b81fc000 task.ti: ffff8800b81fc000
Feb 22 11:14:03 odvarok kernel: RIP: 0010:[<ffffffffa01ee43a>]  [<ffffffffa01ee43a>] i915_gem_object_ggtt_unpin+0xca/0xd0 [i915]
Feb 22 11:14:03 odvarok kernel: RSP: 0018:ffff8800b81ff6b0  EFLAGS: 00010246
Feb 22 11:14:03 odvarok kernel: RAX: ffff8800b5dc4400 RBX: ffff8800b416fe00 RCX: ffff8800b5dc4400
Feb 22 11:14:03 odvarok kernel: RDX: 00000000ffffffff RSI: ffff88007d0998a8 RDI: ffff8800b416fe00
Feb 22 11:14:03 odvarok kernel: RBP: ffff8800b81ff6b0 R08: ffff8800b416ff00 R09: 0000000000000000
Feb 22 11:14:03 odvarok kernel: R10: 0000000000000001 R11: 0000000000000001 R12: ffff8800b416fe00
Feb 22 11:14:03 odvarok kernel: R13: ffffffffa0283f60 R14: ffff8800b46ba600 R15: ffff8800b8181300
Feb 22 11:14:03 odvarok kernel: FS:  00007f79574208c0(0000) GS:ffff8800be000000(0000) knlGS:0000000000000000
Feb 22 11:14:03 odvarok kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
Feb 22 11:14:03 odvarok kernel: CR2: 00007fde7941bf68 CR3: 00000000b4b86000 CR4: 00000000000007f0
Feb 22 11:14:03 odvarok kernel: Stack:
Feb 22 11:14:03 odvarok kernel:  ffff8800b81ff6c8 ffffffffa01ee452 ffff8800b416fe00 ffff8800b81ff6e8
Feb 22 11:14:03 odvarok kernel:  ffffffffa022f9cd ffff8800b46ba600 ffff88007e803060 ffff8800b81ff708
Feb 22 11:14:03 odvarok kernel:  ffffffffa023bf6f ffff88007ea87c00 ffff8800b8181300 ffff8800b81ff788
Feb 22 11:14:03 odvarok kernel: Call Trace:
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa01ee452>] i915_gem_object_unpin_from_display_plane+0x12/0x90 [i915]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa022f9cd>] intel_unpin_fb_obj+0x2d/0x60 [i915]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa023bf6f>] intel_cleanup_plane_fb+0x3f/0x80 [i915]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa014393e>] drm_plane_helper_commit+0x1fe/0x300 [drm_kms_helper]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa0143b8c>] drm_plane_helper_disable+0x5c/0xb0 [drm_kms_helper]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa0233ee3>] __intel_set_mode+0x323/0xb90 [i915]
Feb 22 11:14:03 odvarok kernel:  [<ffffffff8124b45c>] ? rcu_read_lock_sched_held+0x6c/0x80
Feb 22 11:14:03 odvarok kernel:  [<ffffffff8124f645>] ? __kmalloc+0x205/0x2d0
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa023b947>] intel_crtc_set_config+0xca7/0x1020 [i915]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa00bc037>] ? drm_atomic_state_free+0x27/0x60 [drm]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa00ab7e9>] drm_mode_set_config_internal+0x69/0x120 [drm]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa014c908>] restore_fbdev_mode+0xc8/0xf0 [drm_kms_helper]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa014e969>] drm_fb_helper_restore_fbdev_mode_unlocked+0x29/0x80 [drm_kms_helper]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa014e9e2>] drm_fb_helper_set_par+0x22/0x50 [drm_kms_helper]
Feb 22 11:14:03 odvarok kernel:  [<ffffffffa024b7aa>] intel_fbdev_set_par+0x1a/0x60 [i915]
Feb 22 11:14:03 odvarok kernel:  [<ffffffff814a615c>] fb_set_var+0x23c/0x4a0
Feb 22 11:14:03 odvarok kernel:  [<ffffffff8149baac>] fbcon_blank+0x34c/0x390
Feb 22 11:14:03 odvarok kernel:  [<ffffffff8153d502>] do_unblank_screen+0xe2/0x1f0
Feb 22 11:14:03 odvarok kernel:  [<ffffffff815319b1>] complete_change_console+0x61/0xf0
Feb 22 11:14:03 odvarok kernel:  [<ffffffff8153221a>] vt_ioctl+0x7da/0x14c0
Feb 22 11:14:03 odvarok kernel:  [<ffffffff8110386f>] ? lock_release_holdtime.part.29+0xf/0x200
Feb 22 11:14:03 odvarok kernel:  [<ffffffff81523e29>] tty_ioctl+0x449/0xe00
Feb 22 11:14:03 odvarok kernel:  [<ffffffff813a7be5>] ? inode_has_perm.isra.48+0x55/0xa0
Feb 22 11:14:03 odvarok kernel:  [<ffffffff8128cd68>] do_vfs_ioctl+0x2e8/0x530
Feb 22 11:14:03 odvarok kernel:  [<ffffffff8128d031>] SyS_ioctl+0x81/0xa0
Feb 22 11:14:03 odvarok kernel:  [<ffffffff81880ba9>] system_call_fastpath+0x12/0x17
Feb 22 11:14:03 odvarok kernel: Code: 41 83 e1 f0 83 e2 0f 41 09 d1 84 d2 44 88 88 c0 00 00 00 75 07 80 a7 59 01 00 00 7f 5d c3 0f 1f 00 0f 0b 66 0f 1f 44 00 00 0f 0b <0f> 0b 0f 1f 40 00 66 66 66 66 90 55 48 89 e5 53 48 89 fb e8 1e 
Feb 22 11:14:03 odvarok kernel: RIP  [<ffffffffa01ee43a>] i915_gem_object_ggtt_unpin+0xca/0xd0 [i915]
Feb 22 11:14:03 odvarok kernel:  RSP <ffff8800b81ff6b0>
Feb 22 11:14:03 odvarok kernel: ---[ end trace 804a0e2e3e91ca25 ]---

[1] https://bugzilla.redhat.com/show_bug.cgi?id=1195034
Comment 1 Alex Xu (Hello71) 2015-03-03 20:38:24 UTC 
Reproducible with 023a6007a08d342b64895a7342e426d12d9627dd (4.0-rc1+):

-----

WARNING: CPU: 0 PID: 260 at drivers/gpu/drm/i915/i915_gem.c:4284 i915_gem_object_unpin_fence+0x75/0xa0()
WARN_ON(dev_priv->fence_regs[obj->fence_reg].pin_count <= 0)
Modules linked in: af_packet uvcvideo ath3k videobuf2_vmalloc btusb videobuf2_memops videobuf2_core bluetooth v4l2_common videodev rtsx_usb_sdmmc mmc_core rtsx_usb mfd_core ath9k ath9k_common ath9k_hw ath firmware_class mac80211 x86_pkg_temp_thermal kvm_intel cfg80211   kvm ehci_pci xhci_pci xhci_hcd ehci_hcd usbcore rfkill usb_common
CPU: 0 PID: 260 Comm: X Not tainted 4.0.0-rc1+ #230
Hardware name: Acer Aspire S3-391/Hummingbird2, BIOS V1.29 07/03/2013
 0000000000000000 ffffffff817699b8 ffffffff81537da8 ffff880147e0f8c8
 ffffffff81041f5c ffff8800001d0000 ffff880000121880 ffffffff81681740
 ffff88009d18bf00 ffff880087321840 ffffffff81041fd5 ffffffff81769b08
Call Trace:
 [<ffffffff81537da8>] ? dump_stack+0x40/0x50
 [<ffffffff81041f5c>] ? warn_slowpath_common+0x7c/0xb0
 [<ffffffff81041fd5>] ? warn_slowpath_fmt+0x45/0x50
 [<ffffffff8132fe35>] ? i915_gem_object_unpin_fence+0x75/0xa0
 [<ffffffff813685b8>] ? intel_unpin_fb_obj+0x18/0x50
 [<ffffffff81374237>] ? intel_cleanup_plane_fb+0x37/0x80
 [<ffffffff812dbab2>] ? drm_plane_helper_commit+0x1c2/0x2b0
 [<ffffffff81373d41>] ? intel_crtc_set_config+0xd31/0xfc0
 [<ffffffff812f59af>] ? drm_mode_set_config_internal+0x5f/0x100
 [<ffffffff812e3929>] ? restore_fbdev_mode+0xb9/0xe0
 [<ffffffff812e57db>] ? drm_fb_helper_restore_fbdev_mode_unlocked+0x1b/0x60
 [<ffffffff812e583d>] ? drm_fb_helper_set_par+0x1d/0x40
 [<ffffffff813820b1>] ? intel_fbdev_set_par+0x11/0x60
 [<ffffffff810765bf>] ? __wake_up+0x2f/0x50
 [<ffffffff81274bcc>] ? fb_set_var+0x16c/0x3a0
 [<ffffffff811e5219>] ? jbd2_journal_stop+0x199/0x380
 [<ffffffff81159b8a>] ? inode_to_bdi+0x1a/0x60
 [<ffffffff810f104c>] ? balance_dirty_pages_ratelimited+0x1c/0xa90
 [<ffffffff8126f3e5>] ? fbcon_blank+0x225/0x2e0
 [<ffffffff81001856>] ? __switch_to+0x436/0x5c0
 [<ffffffff812c8c02>] ? do_unblank_screen+0xb2/0x1e0
 [<ffffffff812bf23f>] ? complete_change_console+0x4f/0xd0
 [<ffffffff812c0366>] ? vt_ioctl+0x10a6/0x1330
 [<ffffffff8110eae9>] ? do_wp_page+0x359/0x840
 [<ffffffff812eb175>] ? drm_ioctl+0x85/0x5a0
 [<ffffffff812b3d9e>] ? tty_ioctl+0x3de/0xc20
 [<ffffffff81145bd8>] ? do_vfs_ioctl+0x2e8/0x4f0
 [<ffffffff81034c93>] ? __do_page_fault+0x123/0x3c0
 [<ffffffff81145e16>] ? SyS_ioctl+0x36/0x80
 [<ffffffff8153f08f>] ? page_fault+0x1f/0x30
 [<ffffffff8153d692>] ? system_call_fastpath+0x12/0x17
---[ end trace 2f8f33a70f93b3eb ]---
Comment 2 Jani Nikula 2016-01-18 13:10:25 UTC 
Please try kernel v4.4.
Comment 3 Josh Boyer 2016-01-18 23:09:28 UTC 
(In reply to Jani Nikula from comment #2)
> Please try kernel v4.4.

Do you have a commit in 4.4 that you can point to?
Comment 4 Chris Wilson 2016-01-19 08:55:29 UTC 
commit 0c82312f3f15538f4e6ceda2a82caee8fbac4501 [not in v4.4]
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Fri Dec 4 16:05:26 2015 +0000

    drm/i915: Pin the ifbdev for the info->system_base GGTT mmapping

Possibly, though unpin-fence and ifbdev don't truly mix, so could well be an atomic bug.
Comment 5 Jari Tahvanainen 2016-12-09 13:09:40 UTC 
Josh and Alex Xu, Please retest with the latest drm-tip since 

commit 49ef5294cda256aa5496ba56bbf859d3c7a17e07
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Thu Aug 18 17:17:00 2016 +0100
    drm/i915: Move fence tracking from object to vma

and

commit 47ed32483e1f1fc391c78466f5fd66f03078e9e4
Author:     Chris Wilson <chris@chris-wilson.co.uk>
AuthorDate: Wed Oct 12 12:48:26 2016 +0100
Commit:     Jani Nikula <jani.nikula@intel.com>
CommitDate: Fri Oct 28 15:18:51 2016 +0300
    drm/i915: Use fence_write() from rpm resume

These commits have changed the setup, so it would be really valuable to know if the bug is still reproducible.
Comment 6 Alex Xu (Hello71) 2016-12-09 19:13:27 UTC 
I don't use this hardware anymore.
Comment 7 Ricardo 2017-02-23 21:56:20 UTC 
There seems to have fixes already in place, the submitter can not validate it since has no longer the hardware

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