[Bug 68068] New: [ivb] i915: slowpath warning on module load with fastboot=1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=68068

          Priority: medium
            Bug ID: 68068
                CC: kirill at shutemov.name
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [ivb] i915: slowpath warning on module load with
                    fastboot=1
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: mike at altlinux.org
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

Created attachment 84017
  --> https://bugs.freedesktop.org/attachment.cgi?id=84017&action=edit
/home/mike/work/alt/drm-intel/dmesg-3.11-rc5.fastboot

Got this in kernel messages while providing info on bug #67950; it's Linux
3.11-rc5 x86_64 running on an ASUS UX31A (i7-3517U) in UEFI mode.  Kirill
suggested to post it separately.

[    2.433780] ------------[ cut here ]------------
[    2.433808] WARNING: CPU: 2 PID: 846 at drivers/gpu/drm/i915/i915_gem.c:3428
i915_gem_object_set_cache_level+0x2d9/0x300 [i915]()
[    2.433809] Modules linked in: arc4 iwldvm mac80211 coretemp hwmon
snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp crc32_p
clmul snd_hda_codec_realtek crc32c_intel ghash_clmulni_intel aesni_intel
i915(+) aes_x86_64 iwlwifi lrw gf128mul glue_helper ablk_help
er cryptd cfg80211 iTCO_wdt iTCO_vendor_support intel_agp intel_gtt
snd_hda_intel drm_kms_helper snd_hda_codec microcode snd_hwdep drm
 ehci_pci psmouse snd_pcm xhci_hcd wmi ehci_hcd rfkill pcspkr snd_page_alloc
i2c_algo_bit usbcore snd_timer thermal usb_common snd sou
ndcore video i2c_i801 lpc_ich i2c_core battery ac mperf processor button
efivars ext4 crc16 mbcache jbd2 sd_mod crc_t10dif ahci libahc
i evdev libata serio_raw scsi_mod
[    2.433868] CPU: 2 PID: 846 Comm: systemd-udevd Not tainted
3.11.0-glebfm-test-alt3.rc5 #1
[    2.433870] Hardware name: ASUSTeK COMPUTER INC. UX31A/UX31A, BIOS UX31A.214
08/28/2012
[    2.433872]  0000000000000009 ffff8801189fb5b8 ffffffff814cffdd
0000000000000047
[    2.433875]  0000000000000000 ffff8801189fb5f8 ffffffff81062c77
0000000000000fe0
[    2.433878]  ffff8801171fce90 0000000000000041 0000000000000000
ffff8801171fce40
[    2.433881] Call Trace:
[    2.433886]  [<ffffffff814cffdd>] dump_stack+0x55/0x86
[    2.433891]  [<ffffffff81062c77>] warn_slowpath_common+0x87/0xb0
[    2.433895]  [<ffffffff81062cb5>] warn_slowpath_null+0x15/0x20
[    2.433909]  [<ffffffffa0423aa9>]
i915_gem_object_set_cache_level+0x2d9/0x300 [i915]
[    2.433921]  [<ffffffffa0423be4>]
i915_gem_object_pin_to_display_plane+0x44/0x190 [i915]
[    2.433937]  [<ffffffffa043b8d0>] intel_pin_and_fence_fb_obj+0xc0/0x140
[i915]
[    2.433941]  [<ffffffff814d2ef6>] ? mutex_lock+0x26/0x4a
[    2.433959]  [<ffffffffa04659f2>] intelfb_create+0x102/0x500 [i915]
[    2.433971]  [<ffffffffa035f2b1>] drm_fb_helper_initial_config+0x301/0x530
[drm_kms_helper]
[    2.433974]  [<ffffffff81051de3>] ? default_spin_lock_flags+0x13/0x20
[    2.433992]  [<ffffffffa0472866>] ? i915_write32+0xb6/0x1b0 [i915]
[    2.434008]  [<ffffffffa0465ebc>] intel_fbdev_initial_config+0x1c/0x20
[i915]
[    2.434021]  [<ffffffffa040d29e>] i915_driver_load+0xe5e/0xe90 [i915]
[    2.434037]  [<ffffffffa029aac6>] drm_get_pci_dev+0x176/0x2a0 [drm]
[    2.434050]  [<ffffffffa04093f7>] i915_pci_probe+0x27/0x70 [i915]
[    2.434053]  [<ffffffff812ad696>] local_pci_probe+0x46/0x80
[    2.434056]  [<ffffffff812ad8f1>] pci_device_probe+0x101/0x110
[    2.434060]  [<ffffffff81374236>] driver_probe_device+0x76/0x240
[    2.434063]  [<ffffffff8137449b>] __driver_attach+0x9b/0xa0
[    2.434066]  [<ffffffff81374400>] ? driver_probe_device+0x240/0x240
[    2.434069]  [<ffffffff813724d5>] bus_for_each_dev+0x55/0x90
[    2.434073]  [<ffffffff81373d49>] driver_attach+0x19/0x20
[    2.434075]  [<ffffffff813738b4>] bus_add_driver+0x104/0x260
[    2.434079]  [<ffffffff81374b85>] driver_register+0x75/0x170
[    2.434083]  [<ffffffffa04b4000>] ? 0xffffffffa04b3fff
[    2.434086]  [<ffffffff812ac736>] __pci_register_driver+0x46/0x50
[    2.434094]  [<ffffffffa029ad0a>] drm_pci_init+0x11a/0x130 [drm]
[    2.434097]  [<ffffffffa04b4000>] ? 0xffffffffa04b3fff
[    2.434109]  [<ffffffffa04b4066>] i915_init+0x66/0x68 [i915]
[    2.434113]  [<ffffffff81002142>] do_one_initcall+0x102/0x170
[    2.434116]  [<ffffffff81058163>] ? set_memory_nx+0x43/0x50
[    2.434120]  [<ffffffff814cdb2c>] ? set_section_ro_nx+0x68/0x71
[    2.434124]  [<ffffffff810cd9a6>] load_module+0x1bc6/0x2500
[    2.434127]  [<ffffffff810c9d70>] ? show_initstate+0x50/0x50
[    2.434131]  [<ffffffff810ce456>] SyS_finit_module+0x86/0x90
[    2.434134]  [<ffffffff814decf7>] tracesys+0xdd/0xe2
[    2.434137] ---[ end trace 5aa9c5adf765b312 ]---

Complete dmesg is attached either.

Bug #67391 and bug #66511 seem unrelated.

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