On Tue, 03 Nov 2015, Dave Airlie <airlied@xxxxxxxxx> wrote: > Just booted drm-next on a Skylake laptop that happened to be on my > desk for a few days. > > I wasn't impressed. I'm very disappointed. Doesn't anyone have any > pride in the code they write anymore. > > Initially the previous sentence had a lot of curse words and was Linus > like in it's stature, but I've been promised by twitter that being > nice will get me better results, so let's make it so. Much appreciated; we get the message. > So could someone from Intel takes some responsibility for testing the > code they send me actually you know works on the hardware it's meant > to, or at least tell me what is going so horribly wrong here. > > the lockdep trace at the end doesn't look fun. Skylake wants the DMC firmware blob from linux-firmware or https://01.org/linuxgraphics/downloads. The conclusion from the traces below is that either you don't have it, or we fail to load it due to the deadlock. In any case, our DMC firmware loading is, uh, less than perfect. The bright side is that we are aware of this, and there's a couple of patchsets from Mika/Damien [1] and Animesh/Daniel/Imre [2] to fix this. (Mika, Imre, any comments on the status of those?) The bigger question is how do we fix this for drm-next/v4.4. That's 20 patches in total, and we are way past the cutoff. On the other hand, it's all restricted to Skylake DMC firmware loading, and it is supposed to fix stuff, not add features. Your call. BR, Jani. [1] http://mid.gmane.org/1445950025-5793-1-git-send-email-mika.kuoppala@xxxxxxxxx [2] http://mid.gmane.org/1446069547-24760-1-git-send-email-imre.deak@xxxxxxxxx > > Dave. > > > [ 8.158254] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no) > [ 8.159953] input: Video Bus as > /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input12 > [ 8.160895] [drm] Initialized i915 1.6.0 20151010 for 0000:00:02.0 on minor 0 > [ 8.170784] ------------[ cut here ]------------ > [ 8.170810] WARNING: CPU: 3 PID: 103 at > drivers/gpu/drm/i915/intel_csr.c:481 assert_csr_loaded+0xa8/0x140 > [i915]() > [ 8.170812] CSR is not loaded. > [ 8.170813] Modules linked in: amdkfd amd_iommu_v2 amdgpu i915 ttm > i2c_algo_bit drm_kms_helper serio_raw drm r8169 mii video fjes > [ 8.170825] CPU: 3 PID: 103 Comm: kworker/u16:2 Not tainted 4.3.0-rc5+ #1 > [ 8.170826] Hardware name: HP HP ProBook 470 G3/8102, BIOS N78 Ver. > 01.01 09/04/2015 > [ 8.170830] Workqueue: events_unbound async_run_entry_fn > [ 8.170832] 0000000000000000 000000001aac9e2e ffff88024bd33a68 > ffffffff81416e09 > [ 8.170835] ffff88024bd33ab0 ffff88024bd33aa0 ffffffff810a8bb2 > ffff88003f130000 > [ 8.170838] ffff88003f130510 0000000000000000 000000003000000f > ffff88024ad23000 > [ 8.170841] Call Trace: > [ 8.170845] [<ffffffff81416e09>] dump_stack+0x4b/0x72 > [ 8.170847] [<ffffffff810a8bb2>] warn_slowpath_common+0x82/0xc0 > [ 8.170849] [<ffffffff810a8c4c>] warn_slowpath_fmt+0x5c/0x80 > [ 8.170866] [<ffffffffa015ed08>] assert_csr_loaded+0xa8/0x140 [i915] > [ 8.170885] [<ffffffffa016e825>] skl_set_power_well+0x7e5/0xb00 [i915] > [ 8.170902] [<ffffffffa016eb73>] skl_power_well_enable+0x13/0x20 [i915] > [ 8.170917] [<ffffffffa016edfb>] intel_display_power_get+0xab/0x100 [i915] > [ 8.170944] [<ffffffffa0203a2b>] intel_hdmi_set_edid+0x3b/0x110 [i915] > [ 8.170969] [<ffffffffa0203e20>] intel_hdmi_detect+0xc0/0x130 [i915] > [ 8.170974] [<ffffffffa0129dd5>] > drm_helper_probe_single_connector_modes_merge_bits+0x235/0x4d0 > [drm_kms_helper] > [ 8.170978] [<ffffffffa012a083>] > drm_helper_probe_single_connector_modes+0x13/0x20 [drm_kms_helper] > [ 8.170983] [<ffffffffa0136110>] > drm_fb_helper_initial_config+0xb0/0x410 [drm_kms_helper] > [ 8.171007] [<ffffffffa01e839b>] intel_fbdev_initial_config+0x1b/0x20 [i915] > [ 8.171009] [<ffffffff810d20ea>] async_run_entry_fn+0x4a/0x140 > [ 8.171011] [<ffffffff810c7020>] process_one_work+0x230/0x680 > [ 8.171013] [<ffffffff810c6f89>] ? process_one_work+0x199/0x680 > [ 8.171015] [<ffffffff810c74be>] worker_thread+0x4e/0x450 > [ 8.171017] [<ffffffff810c7470>] ? process_one_work+0x680/0x680 > [ 8.171020] [<ffffffff810ce511>] kthread+0x101/0x120 > [ 8.171023] [<ffffffff81103b49>] ? trace_hardirqs_on_caller+0x129/0x1b0 > [ 8.171026] [<ffffffff810ce410>] ? kthread_create_on_node+0x250/0x250 > [ 8.171028] [<ffffffff8184f66f>] ret_from_fork+0x3f/0x70 > [ 8.171031] [<ffffffff810ce410>] ? kthread_create_on_node+0x250/0x250 > [ 8.171032] ---[ end trace 4692db411b428244 ]--- > [ 8.171035] ------------[ cut here ]------------ > [ 8.171053] WARNING: CPU: 3 PID: 103 at > drivers/gpu/drm/i915/intel_csr.c:484 assert_csr_loaded+0x103/0x140 > [i915]() > [ 8.171054] CSR SSP Base Not fine > [ 8.171055] Modules linked in: amdkfd amd_iommu_v2 amdgpu i915 ttm > i2c_algo_bit drm_kms_helper serio_raw drm r8169 mii video fjes > [ 8.171064] CPU: 3 PID: 103 Comm: kworker/u16:2 Tainted: G W > 4.3.0-rc5+ #1 > [ 8.171065] Hardware name: HP HP ProBook 470 G3/8102, BIOS N78 Ver. > 01.01 09/04/2015 > [ 8.171067] Workqueue: events_unbound async_run_entry_fn > [ 8.171069] 0000000000000000 000000001aac9e2e ffff88024bd33a68 > ffffffff81416e09 > [ 8.171071] ffff88024bd33ab0 ffff88024bd33aa0 ffffffff810a8bb2 > ffff88003f130000 > [ 8.171074] ffff88003f130510 0000000000000000 000000003000000f > ffff88024ad23000 > [ 8.171077] Call Trace: > [ 8.171079] [<ffffffff81416e09>] dump_stack+0x4b/0x72 > [ 8.171081] [<ffffffff810a8bb2>] warn_slowpath_common+0x82/0xc0 > [ 8.171083] [<ffffffff810a8c4c>] warn_slowpath_fmt+0x5c/0x80 > [ 8.171098] [<ffffffffa015ed63>] assert_csr_loaded+0x103/0x140 [i915] > [ 8.171114] [<ffffffffa016e825>] skl_set_power_well+0x7e5/0xb00 [i915] > [ 8.171129] [<ffffffffa016eb73>] skl_power_well_enable+0x13/0x20 [i915] > [ 8.171143] [<ffffffffa016edfb>] intel_display_power_get+0xab/0x100 [i915] > [ 8.171169] [<ffffffffa0203a2b>] intel_hdmi_set_edid+0x3b/0x110 [i915] > [ 8.171191] [<ffffffffa0203e20>] intel_hdmi_detect+0xc0/0x130 [i915] > [ 8.171195] [<ffffffffa0129dd5>] > drm_helper_probe_single_connector_modes_merge_bits+0x235/0x4d0 > [drm_kms_helper] > [ 8.171199] [<ffffffffa012a083>] > drm_helper_probe_single_connector_modes+0x13/0x20 [drm_kms_helper] > [ 8.171204] [<ffffffffa0136110>] > drm_fb_helper_initial_config+0xb0/0x410 [drm_kms_helper] > [ 8.171242] [<ffffffffa01e839b>] intel_fbdev_initial_config+0x1b/0x20 [i915] > [ 8.171244] [<ffffffff810d20ea>] async_run_entry_fn+0x4a/0x140 > [ 8.171247] [<ffffffff810c7020>] process_one_work+0x230/0x680 > [ 8.171249] [<ffffffff810c6f89>] ? process_one_work+0x199/0x680 > [ 8.171251] [<ffffffff810c74be>] worker_thread+0x4e/0x450 > [ 8.171253] [<ffffffff810c7470>] ? process_one_work+0x680/0x680 > [ 8.171256] [<ffffffff810ce511>] kthread+0x101/0x120 > [ 8.171259] [<ffffffff81103b49>] ? trace_hardirqs_on_caller+0x129/0x1b0 > [ 8.171262] [<ffffffff810ce410>] ? kthread_create_on_node+0x250/0x250 > [ 8.171264] [<ffffffff8184f66f>] ret_from_fork+0x3f/0x70 > [ 8.171267] [<ffffffff810ce410>] ? kthread_create_on_node+0x250/0x250 > [ 8.171268] ---[ end trace 4692db411b428245 ]--- > [ 8.171270] ------------[ cut here ]------------ > [ 8.171289] WARNING: CPU: 3 PID: 103 at > drivers/gpu/drm/i915/intel_csr.c:485 assert_csr_loaded+0x134/0x140 > [i915]() > [ 8.171290] CSR HTP Not fine > [ 8.171291] Modules linked in: amdkfd amd_iommu_v2 amdgpu i915 ttm > i2c_algo_bit drm_kms_helper serio_raw drm r8169 mii video fjes > [ 8.171301] CPU: 3 PID: 103 Comm: kworker/u16:2 Tainted: G W > 4.3.0-rc5+ #1 > [ 8.171303] Hardware name: HP HP ProBook 470 G3/8102, BIOS N78 Ver. > 01.01 09/04/2015 > [ 8.171305] Workqueue: events_unbound async_run_entry_fn > [ 8.171307] 0000000000000000 000000001aac9e2e ffff88024bd33a68 > ffffffff81416e09 > [ 8.171310] ffff88024bd33ab0 ffff88024bd33aa0 ffffffff810a8bb2 > ffff88003f130000 > [ 8.171313] ffff88003f130510 0000000000000000 000000003000000f > ffff88024ad23000 > [ 8.171316] Call Trace: > [ 8.171318] [<ffffffff81416e09>] dump_stack+0x4b/0x72 > [ 8.171321] [<ffffffff810a8bb2>] warn_slowpath_common+0x82/0xc0 > [ 8.171323] [<ffffffff810a8c4c>] warn_slowpath_fmt+0x5c/0x80 > [ 8.171340] [<ffffffffa015ed94>] assert_csr_loaded+0x134/0x140 [i915] > [ 8.171358] [<ffffffffa016e825>] skl_set_power_well+0x7e5/0xb00 [i915] > [ 8.171374] [<ffffffffa016eb73>] skl_power_well_enable+0x13/0x20 [i915] > [ 8.171389] [<ffffffffa016edfb>] intel_display_power_get+0xab/0x100 [i915] > [ 8.171417] [<ffffffffa0203a2b>] intel_hdmi_set_edid+0x3b/0x110 [i915] > [ 8.171442] [<ffffffffa0203e20>] intel_hdmi_detect+0xc0/0x130 [i915] > [ 8.171446] [<ffffffffa0129dd5>] > drm_helper_probe_single_connector_modes_merge_bits+0x235/0x4d0 > [drm_kms_helper] > [ 8.171451] [<ffffffffa012a083>] > drm_helper_probe_single_connector_modes+0x13/0x20 [drm_kms_helper] > [ 8.171457] [<ffffffffa0136110>] > drm_fb_helper_initial_config+0xb0/0x410 [drm_kms_helper] > [ 8.171482] [<ffffffffa01e839b>] intel_fbdev_initial_config+0x1b/0x20 [i915] > [ 8.171485] [<ffffffff810d20ea>] async_run_entry_fn+0x4a/0x140 > [ 8.171487] [<ffffffff810c7020>] process_one_work+0x230/0x680 > [ 8.171489] [<ffffffff810c6f89>] ? process_one_work+0x199/0x680 > [ 8.171491] [<ffffffff810c74be>] worker_thread+0x4e/0x450 > [ 8.171494] [<ffffffff810c7470>] ? process_one_work+0x680/0x680 > [ 8.171496] [<ffffffff810ce511>] kthread+0x101/0x120 > [ 8.171499] [<ffffffff81103b49>] ? trace_hardirqs_on_caller+0x129/0x1b0 > [ 8.171502] [<ffffffff810ce410>] ? kthread_create_on_node+0x250/0x250 > [ 8.171504] [<ffffffff8184f66f>] ret_from_fork+0x3f/0x70 > [ 8.171507] [<ffffffff810ce410>] ? kthread_create_on_node+0x250/0x250 > [ 8.171508] ---[ end trace 4692db411b428246 ]--- > [ 8.171510] ------------[ cut here ]------------ > [ 8.171529] WARNING: CPU: 3 PID: 103 at > drivers/gpu/drm/i915/intel_runtime_pm.c:551 > skl_set_power_well+0x82d/0xb00 [i915]() > [ 8.171530] DC6 already programmed to be disabled. > [ 8.171531] Modules linked in: amdkfd amd_iommu_v2 amdgpu i915 ttm > i2c_algo_bit drm_kms_helper serio_raw drm r8169 mii video fjes > [ 8.171541] CPU: 3 PID: 103 Comm: kworker/u16:2 Tainted: G W > 4.3.0-rc5+ #1 > [ 8.171543] Hardware name: HP HP ProBook 470 G3/8102, BIOS N78 Ver. > 01.01 09/04/2015 > [ 8.171545] Workqueue: events_unbound async_run_entry_fn > [ 8.171547] 0000000000000000 000000001aac9e2e ffff88024bd33a90 > ffffffff81416e09 > [ 8.171550] ffff88024bd33ad8 ffff88024bd33ac8 ffffffff810a8bb2 > ffff88003f130000 > [ 8.171553] 0000000040000000 ffffffffa024ea70 000000003000000f > ffff88024ad23000 > [ 8.171556] Call Trace: > [ 8.171558] [<ffffffff81416e09>] dump_stack+0x4b/0x72 > [ 8.171560] [<ffffffff810a8bb2>] warn_slowpath_common+0x82/0xc0 > [ 8.171562] [<ffffffff810a8c4c>] warn_slowpath_fmt+0x5c/0x80 > [ 8.171579] [<ffffffffa016e86d>] skl_set_power_well+0x82d/0xb00 [i915] > [ 8.171594] [<ffffffffa016eb73>] skl_power_well_enable+0x13/0x20 [i915] > [ 8.171609] [<ffffffffa016edfb>] intel_display_power_get+0xab/0x100 [i915] > [ 8.171637] [<ffffffffa0203a2b>] intel_hdmi_set_edid+0x3b/0x110 [i915] > [ 8.171662] [<ffffffffa0203e20>] intel_hdmi_detect+0xc0/0x130 [i915] > [ 8.171693] [<ffffffffa0129dd5>] > drm_helper_probe_single_connector_modes_merge_bits+0x235/0x4d0 > [drm_kms_helper] > [ 8.171701] [<ffffffffa012a083>] > drm_helper_probe_single_connector_modes+0x13/0x20 [drm_kms_helper] > [ 8.171710] [<ffffffffa0136110>] > drm_fb_helper_initial_config+0xb0/0x410 [drm_kms_helper] > [ 8.171741] [<ffffffffa01e839b>] intel_fbdev_initial_config+0x1b/0x20 [i915] > [ 8.171744] [<ffffffff810d20ea>] async_run_entry_fn+0x4a/0x140 > [ 8.171747] [<ffffffff810c7020>] process_one_work+0x230/0x680 > [ 8.171750] [<ffffffff810c6f89>] ? process_one_work+0x199/0x680 > [ 8.171752] [<ffffffff810c74be>] worker_thread+0x4e/0x450 > [ 8.171755] [<ffffffff810c7470>] ? process_one_work+0x680/0x680 > [ 8.171757] [<ffffffff810ce511>] kthread+0x101/0x120 > [ 8.171760] [<ffffffff81103b49>] ? trace_hardirqs_on_caller+0x129/0x1b0 > [ 8.171763] [<ffffffff810ce410>] ? kthread_create_on_node+0x250/0x250 > [ 8.171765] [<ffffffff8184f66f>] ret_from_fork+0x3f/0x70 > [ 8.171768] [<ffffffff810ce410>] ? kthread_create_on_node+0x250/0x250 > [ 8.171769] ---[ end trace 4692db411b428247 ]--- > [ 9.764929] [drm] RC6 on > [ 11.207028] fbcon: inteldrmfb (fb0) is primary device > [ 14.261100] ------------[ cut here ]------------ > [ 14.261240] WARNING: CPU: 0 PID: 103 at > drivers/gpu/drm/i915/intel_uncore.c:619 > hsw_unclaimed_reg_debug+0x69/0x90 [i915]() > [ 14.261244] Unclaimed register detected after writing to register 0x68970 > [ 14.261268] Modules linked in: amdkfd amd_iommu_v2 amdgpu i915 ttm > i2c_algo_bit drm_kms_helper serio_raw drm r8169 mii video fjes > [ 14.261277] CPU: 0 PID: 103 Comm: kworker/u16:2 Tainted: G W > 4.3.0-rc5+ #1 > [ 14.261280] Hardware name: HP HP ProBook 470 G3/8102, BIOS N78 Ver. > 01.01 09/04/2015 > [ 14.261292] Workqueue: events_unbound async_run_entry_fn > [ 14.261302] 0000000000000000 000000001aac9e2e ffff88024bd33658 > ffffffff81416e09 > [ 14.261309] ffff88024bd336a0 ffff88024bd33690 ffffffff810a8bb2 > ffff88003f130000 > [ 14.261315] 0000000000068970 0000000000068970 ffff88003f130080 > 0000000000000000 > [ 14.261317] Call Trace: > [ 14.261327] [<ffffffff81416e09>] dump_stack+0x4b/0x72 > [ 14.261335] [<ffffffff810a8bb2>] warn_slowpath_common+0x82/0xc0 > [ 14.261340] [<ffffffff810a8c4c>] warn_slowpath_fmt+0x5c/0x80 > [ 14.261457] [<ffffffffa01a9d39>] hsw_unclaimed_reg_debug+0x69/0x90 [i915] > [ 14.261556] [<ffffffffa01b07ec>] gen9_write32+0x25c/0x3c0 [i915] > [ 14.261663] [<ffffffffa01c1884>] skl_detach_scaler.isra.11+0x74/0xb0 [i915] > [ 14.261756] [<ffffffffa01c1925>] skl_detach_scalers+0x65/0x70 [i915] > [ 14.261843] [<ffffffffa01c19da>] intel_begin_crtc_commit+0xaa/0x1f0 [i915] > [ 14.261868] [<ffffffffa013293b>] > drm_atomic_helper_commit_planes_on_crtc+0x5b/0x270 [drm_kms_helper] > [ 14.261968] [<ffffffffa01d04d9>] intel_atomic_commit+0x229/0x1450 [i915] > [ 14.262026] [<ffffffffa00b024b>] ? drm_atomic_check_only+0x19b/0x5a0 [drm] > [ 14.262074] [<ffffffffa00affe7>] ? > drm_atomic_add_affected_connectors+0x27/0xf0 [drm] > [ 14.262117] [<ffffffffa00b0687>] drm_atomic_commit+0x37/0x60 [drm] > [ 14.262140] [<ffffffffa0133d6e>] restore_fbdev_mode+0x27e/0x2b0 > [drm_kms_helper] > [ 14.262162] [<ffffffffa0135fc3>] > drm_fb_helper_restore_fbdev_mode_unlocked+0x33/0x80 [drm_kms_helper] > [ 14.262179] [<ffffffffa013603d>] drm_fb_helper_set_par+0x2d/0x50 > [drm_kms_helper] > [ 14.262298] [<ffffffffa01e785a>] intel_fbdev_set_par+0x1a/0x60 [i915] > [ 14.262308] [<ffffffff8148a995>] fbcon_init+0x545/0x5d0 > [ 14.262321] [<ffffffff8152332a>] visual_init+0xca/0x130 > [ 14.262327] [<ffffffff81525205>] do_bind_con_driver+0x1c5/0x3b0 > [ 14.262334] [<ffffffff81525729>] do_take_over_console+0x149/0x1a0 > [ 14.262342] [<ffffffff814867e7>] do_fbcon_takeover+0x57/0xb0 > [ 14.262350] [<ffffffff8148b43c>] fbcon_event_notify+0x66c/0x760 > [ 14.262361] [<ffffffff810cfa9e>] notifier_call_chain+0x3e/0xb0 > [ 14.262368] [<ffffffff810cfc9d>] __blocking_notifier_call_chain+0x4d/0x70 > [ 14.262373] [<ffffffff810cfcd6>] blocking_notifier_call_chain+0x16/0x20 > [ 14.262382] [<ffffffff8149120b>] fb_notifier_call_chain+0x1b/0x20 > [ 14.262387] [<ffffffff814936d1>] register_framebuffer+0x211/0x350 > [ 14.262409] [<ffffffffa01362ec>] > drm_fb_helper_initial_config+0x28c/0x410 [drm_kms_helper] > [ 14.262517] [<ffffffffa01e839b>] intel_fbdev_initial_config+0x1b/0x20 [i915] > [ 14.262524] [<ffffffff810d20ea>] async_run_entry_fn+0x4a/0x140 > [ 14.262531] [<ffffffff810c7020>] process_one_work+0x230/0x680 > [ 14.262537] [<ffffffff810c6f89>] ? process_one_work+0x199/0x680 > [ 14.262545] [<ffffffff810c74be>] worker_thread+0x4e/0x450 > [ 14.262551] [<ffffffff810c7470>] ? process_one_work+0x680/0x680 > [ 14.262559] [<ffffffff810ce511>] kthread+0x101/0x120 > [ 14.262569] [<ffffffff81103b49>] ? trace_hardirqs_on_caller+0x129/0x1b0 > [ 14.262579] [<ffffffff810ce410>] ? kthread_create_on_node+0x250/0x250 > [ 14.262586] [<ffffffff8184f66f>] ret_from_fork+0x3f/0x70 > [ 14.262594] [<ffffffff810ce410>] ? kthread_create_on_node+0x250/0x250 > [ 14.262599] ---[ end trace 4692db411b428248 ]--- > [ 14.263856] Console: switching to colour frame buffer device 240x67 > [ 14.287288] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device > [ 17.404937] systemd-udevd (359) used greatest stack depth: 11864 bytes left > [ 17.406417] systemd-udevd (357) used greatest stack depth: 11592 bytes left > [ 18.249713] audit: type=1130 audit(1446504329.819:11): pid=1 uid=0 > auid=4294967295 ses=4294967295 subj=kernel msg='unit=dracut-initqueue > comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? > terminal=? res=success' > > [ 20.451400] ====================================================== > [ 20.451420] [ INFO: possible circular locking dependency detected ] > [ 20.451441] 4.3.0-rc5+ #1 Tainted: G W > [ 20.451457] ------------------------------------------------------- > [ 20.451477] plymouthd/371 is trying to acquire lock: > [ 20.451494] (&dev->struct_mutex){+.+.+.}, at: [<ffffffffa0093c62>] > drm_gem_mmap+0x112/0x290 [drm] > [ 20.451538] > but task is already holding lock: > [ 20.451557] (&mm->mmap_sem){++++++}, at: [<ffffffff811fd9ac>] > vm_mmap_pgoff+0x8c/0xf0 > [ 20.451591] > which lock already depends on the new lock. > > [ 20.451617] > the existing dependency chain (in reverse order) is: > [ 20.451640] > -> #3 (&mm->mmap_sem){++++++}: > [ 20.451661] [<ffffffff8110644e>] lock_acquire+0xce/0x1c0 > [ 20.451683] [<ffffffff8120ec9a>] __might_fault+0x7a/0xa0 > [ 20.451705] [<ffffffff8127e34e>] filldir+0x9e/0x130 > [ 20.451726] [<ffffffff81295b86>] dcache_readdir+0x186/0x230 > [ 20.451748] [<ffffffff8127e117>] iterate_dir+0x97/0x130 > [ 20.451769] [<ffffffff8127e66a>] SyS_getdents+0x9a/0x130 > [ 20.451790] [<ffffffff8184f2f2>] entry_SYSCALL_64_fastpath+0x12/0x76 > [ 20.451829] > -> #2 (&sb->s_type->i_mutex_key#2){+.+.+.}: > [ 20.451852] [<ffffffff8110644e>] lock_acquire+0xce/0x1c0 > [ 20.451872] [<ffffffff8184b516>] mutex_lock_nested+0x86/0x400 > [ 20.451893] [<ffffffff81277790>] walk_component+0x1d0/0x2a0 > [ 20.451914] [<ffffffff812779f0>] link_path_walk+0x190/0x5a0 > [ 20.451935] [<ffffffff8127803b>] path_openat+0xab/0x1260 > [ 20.451955] [<ffffffff8127a651>] do_filp_open+0x91/0x100 > [ 20.451975] [<ffffffff81267e67>] file_open_name+0xf7/0x150 > [ 20.451995] [<ffffffff81267ef3>] filp_open+0x33/0x60 > [ 20.452014] [<ffffffff8157e1e7>] _request_firmware+0x277/0x880 > [ 20.452038] [<ffffffff8157e9e4>] request_firmware_work_func+0x34/0x80 > [ 20.452060] [<ffffffff810c7020>] process_one_work+0x230/0x680 > [ 20.452082] [<ffffffff810c74be>] worker_thread+0x4e/0x450 > [ 20.452102] [<ffffffff810ce511>] kthread+0x101/0x120 > [ 20.452121] [<ffffffff8184f66f>] ret_from_fork+0x3f/0x70 > [ 20.452140] > -> #1 (umhelper_sem){++++.+}: > [ 20.452159] [<ffffffff8110644e>] lock_acquire+0xce/0x1c0 > [ 20.452178] [<ffffffff8184c5c1>] down_read+0x51/0xa0 > [ 20.452197] [<ffffffff810c203b>] > usermodehelper_read_trylock+0x5b/0x130 > [ 20.452221] [<ffffffff8157e147>] _request_firmware+0x1d7/0x880 > [ 20.452242] [<ffffffff8157e821>] request_firmware+0x31/0x50 > [ 20.452262] [<ffffffffa01b54a4>] > intel_guc_ucode_init+0xf4/0x400 [i915] > [ 20.452305] [<ffffffffa0213913>] i915_driver_load+0xd63/0x16e0 [i915] > [ 20.452343] [<ffffffffa00987d9>] drm_dev_register+0xa9/0xc0 [drm] > [ 20.452369] [<ffffffffa009ae3d>] drm_get_pci_dev+0x8d/0x1e0 [drm] > [ 20.452396] [<ffffffffa01521e4>] i915_pci_probe+0x34/0x50 [i915] > [ 20.452421] [<ffffffff81464675>] local_pci_probe+0x45/0xa0 > [ 20.452443] [<ffffffff81465a6d>] pci_device_probe+0xfd/0x140 > [ 20.452464] [<ffffffff8156a2e4>] driver_probe_device+0x224/0x480 > [ 20.452486] [<ffffffff8156a5c8>] __driver_attach+0x88/0x90 > [ 20.452505] [<ffffffff81567cf3>] bus_for_each_dev+0x73/0xc0 > [ 20.452526] [<ffffffff81569a7e>] driver_attach+0x1e/0x20 > [ 20.452546] [<ffffffff815695ae>] bus_add_driver+0x1ee/0x280 > [ 20.452566] [<ffffffff8156b100>] driver_register+0x60/0xe0 > [ 20.453197] [<ffffffff81464050>] __pci_register_driver+0x60/0x70 > [ 20.453845] [<ffffffffa009b070>] drm_pci_init+0xe0/0x110 [drm] > [ 20.454497] [<ffffffffa027f092>] 0xffffffffa027f092 > [ 20.455156] [<ffffffff81002123>] do_one_initcall+0xb3/0x200 > [ 20.455796] [<ffffffff811d8c01>] do_init_module+0x5f/0x1e7 > [ 20.456434] [<ffffffff8114c4e6>] load_module+0x2126/0x27d0 > [ 20.457071] [<ffffffff8114cdf9>] SyS_finit_module+0xb9/0xf0 > [ 20.457738] [<ffffffff8184f2f2>] entry_SYSCALL_64_fastpath+0x12/0x76 > [ 20.458370] > -> #0 (&dev->struct_mutex){+.+.+.}: > [ 20.459773] [<ffffffff8110584f>] __lock_acquire+0x191f/0x1ba0 > [ 20.460451] [<ffffffff8110644e>] lock_acquire+0xce/0x1c0 > [ 20.461074] [<ffffffffa0093c88>] drm_gem_mmap+0x138/0x290 [drm] > [ 20.461693] [<ffffffff8121a5ec>] mmap_region+0x3ec/0x670 > [ 20.462298] [<ffffffff8121abb2>] do_mmap+0x342/0x420 > [ 20.462901] [<ffffffff811fd9d2>] vm_mmap_pgoff+0xb2/0xf0 > [ 20.463532] [<ffffffff81218f62>] SyS_mmap_pgoff+0x1f2/0x290 > [ 20.464118] [<ffffffff8102187b>] SyS_mmap+0x1b/0x30 > [ 20.464702] [<ffffffff8184f2f2>] entry_SYSCALL_64_fastpath+0x12/0x76 > [ 20.465289] > other info that might help us debug this: > > [ 20.467179] Chain exists of: > &dev->struct_mutex --> &sb->s_type->i_mutex_key#2 --> > &mm->mmap_sem > > [ 20.468928] Possible unsafe locking scenario: > > [ 20.470161] CPU0 CPU1 > [ 20.470745] ---- ---- > [ 20.471325] lock(&mm->mmap_sem); > [ 20.471902] lock(&sb->s_type->i_mutex_key#2); > [ 20.472538] lock(&mm->mmap_sem); > [ 20.473118] lock(&dev->struct_mutex); > [ 20.473704] > *** DEADLOCK *** > > [ 20.475432] 1 lock held by plymouthd/371: > [ 20.475998] #0: (&mm->mmap_sem){++++++}, at: [<ffffffff811fd9ac>] > vm_mmap_pgoff+0x8c/0xf0 > [ 20.476594] > stack backtrace: > [ 20.477751] CPU: 1 PID: 371 Comm: plymouthd Tainted: G W > 4.3.0-rc5+ #1 > [ 20.478437] Hardware name: HP HP ProBook 470 G3/8102, BIOS N78 Ver. > 01.01 09/04/2015 > [ 20.479171] 0000000000000000 000000004b1832a7 ffff88024ad57bc0 > ffffffff81416e09 > [ 20.479785] ffffffff82bcce10 ffff88024ad57c00 ffffffff81102513 > ffff88024ad57c60 > [ 20.480402] ffff88024be20c80 0000000000000001 0000000000000001 > ffff88024be20000 > [ 20.481025] Call Trace: > [ 20.481689] [<ffffffff81416e09>] dump_stack+0x4b/0x72 > [ 20.482310] [<ffffffff81102513>] print_circular_bug+0x1e3/0x250 > [ 20.482934] [<ffffffff8110584f>] __lock_acquire+0x191f/0x1ba0 > [ 20.483556] [<ffffffff810259e9>] ? sched_clock+0x9/0x10 > [ 20.484302] [<ffffffff8112262d>] ? debug_lockdep_rcu_enabled+0x1d/0x20 > [ 20.484941] [<ffffffff8110644e>] lock_acquire+0xce/0x1c0 > [ 20.485563] [<ffffffffa0093c62>] ? drm_gem_mmap+0x112/0x290 [drm] > [ 20.486188] [<ffffffffa0093c88>] drm_gem_mmap+0x138/0x290 [drm] > [ 20.486812] [<ffffffffa0093c62>] ? drm_gem_mmap+0x112/0x290 [drm] > [ 20.487467] [<ffffffff8121a5ec>] mmap_region+0x3ec/0x670 > [ 20.488084] [<ffffffff8121abb2>] do_mmap+0x342/0x420 > [ 20.488701] [<ffffffff811fd9d2>] vm_mmap_pgoff+0xb2/0xf0 > [ 20.489316] [<ffffffff81218f62>] SyS_mmap_pgoff+0x1f2/0x290 > [ 20.489991] [<ffffffff81003017>] ? trace_hardirqs_on_thunk+0x17/0x19 > [ 20.490703] [<ffffffff8102187b>] SyS_mmap+0x1b/0x30 > [ 20.491320] [<ffffffff8184f2f2>] entry_SYSCALL_64_fastpath+0x12/0x76 > [ 20.521968] audit: type=1130 audit(1446504332.089:12): pid=1 uid=0 > auid=4294967295 ses > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx > http://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
