| Summary: | [chv] Unclaimed register detected after reading register 0x1e1110 [PORT_HOTPLUG_EN] | ||
|---|---|---|---|
| Product: | DRI | Reporter: | Chris Wilson <chris> |
| Component: | DRM/Intel | Assignee: | Elio <elio.martinez.monroy> |
| Status: | CLOSED FIXED | QA Contact: | Intel GFX Bugs mailing list <intel-gfx-bugs> |
| Severity: | blocker | ||
| Priority: | highest | CC: | intel-gfx-bugs, jwrdegoede |
| Version: | XOrg git | ||
| Hardware: | Other | ||
| OS: | All | ||
| Whiteboard: | |||
| i915 platform: | BSW/CHT | i915 features: | display/Other, power/suspend-resume |
|
Description
Chris Wilson
2016-09-13 19:13:39 UTC
I'm seeing this too, on a cherrytrail z8300 based cube iwork8 air tablet: [ 1050.660449] ------------[ cut here ]------------ [ 1050.660473] WARNING: CPU: 0 PID: 1807 at drivers/gpu/drm/i915/intel_uncore.c: 832 intel_init_vebox_ring_buffer+0x96f/0x4a40 [i915] [ 1050.660475] Unclaimed read from register 0x1e1110 [ 1050.660519] Modules linked in: ... (many) [ 1050.660583] CPU: 0 PID: 1807 Comm: kworker/u8:7 Tainted: G OE 4.9.0-rc8+ #6 [ 1050.660585] Hardware name: cube i1-TF/Cherry Trail CR, BIOS 5.11 05/13/2016 [ 1050.660593] Workqueue: events_unbound async_run_entry_fn [ 1050.660599] ffffa7668114fba8 ffffffffb13ef4ad ffffa7668114fbf8 0000000000000000 [ 1050.660602] ffffa7668114fbe8 ffffffffb10a1ddb 0000034033153fac 0000000000000000 [ 1050.660606] 00000000001e1110 0000000000000001 ffff8dbfff218750 0000000000000001 [ 1050.660607] Call Trace: [ 1050.660614] [<ffffffffb13ef4ad>] dump_stack+0x63/0x86 [ 1050.660618] [<ffffffffb10a1ddb>] __warn+0xcb/0xf0 [ 1050.660620] [<ffffffffb10a1e5f>] warn_slowpath_fmt+0x5f/0x80 [ 1050.660624] [<ffffffffb10cd4c5>] ? wake_up_process+0x15/0x20 [ 1050.660640] [<ffffffffc05727ef>] intel_init_vebox_ring_buffer+0x96f/0x4a40 [i915] [ 1050.660656] [<ffffffffc0575a17>] intel_init_vebox_ring_buffer+0x3b97/0x4a40 [i915] [ 1050.660668] [<ffffffffc052086a>] vlv_force_gfx_clock+0x555a/0x55b0 [i915] [ 1050.660684] [<ffffffffc05a9e3d>] intel_hpd_init+0x6d/0x80 [i915] [ 1050.660695] [<ffffffffc0519261>] 0xffffffffc0519261 [ 1050.660706] [<ffffffffc051930e>] 0xffffffffc051930e [ 1050.660716] [<ffffffffc051933e>] 0xffffffffc051933e [ 1050.660720] [<ffffffffb1446014>] pci_pm_resume+0x64/0xa0 [ 1050.660723] [<ffffffffb1445fb0>] ? pci_pm_thaw+0x90/0x90 [ 1050.660727] [<ffffffffb1553b4d>] dpm_run_callback+0x4d/0x120 [ 1050.660730] [<ffffffffb15540a6>] device_resume+0xa6/0x200 [ 1050.660732] [<ffffffffb155421d>] async_resume+0x1d/0x50 [ 1050.660735] [<ffffffffb10c4f49>] async_run_entry_fn+0x39/0x140 [ 1050.660739] [<ffffffffb10bbe24>] process_one_work+0x184/0x430 [ 1050.660742] [<ffffffffb10bc11e>] worker_thread+0x4e/0x490 [ 1050.660744] [<ffffffffb10bc0d0>] ? process_one_work+0x430/0x430 [ 1050.660747] [<ffffffffb10bc0d0>] ? process_one_work+0x430/0x430 [ 1050.660750] [<ffffffffb10c1b29>] kthread+0xd9/0xf0 [ 1050.660753] [<ffffffffb10c1a50>] ? kthread_park+0x60/0x60 [ 1050.660757] [<ffffffffb18189d5>] ret_from_fork+0x25/0x30 [ 1050.660760] ---[ end trace bd5a695839ae61ae ]--- And then after a second resume: [ 1060.746358] [drm:intel_init_vebox_ring_buffer [i915]] *ERROR* media: timed out waiting for forcewake ack request. [ 1060.796482] [drm:intel_init_vebox_ring_buffer [i915]] *ERROR* media: timed out waiting for forcewake ack request. Still causing mass slowdown: [ 4.740136] WARNING: CPU: 1 PID: 221 at drivers/gpu/drm/i915/intel_uncore.c:795 __unclaimed_reg_debug+0x44/0x50 [i915] [ 4.740155] Unclaimed read from register 0x1e1110 [ 4.740168] Modules linked in: i915(+) intel_gtt drm_kms_helper prime_numbers [ 4.740190] CPU: 1 PID: 221 Comm: systemd-udevd Not tainted 4.10.0-rc6+ #384 [ 4.740203] Hardware name: / , BIOS PYBSWCEL.86A.0027.2015.0507.1758 05/07/2015 [ 4.740220] Call Trace: [ 4.740236] dump_stack+0x4d/0x6f [ 4.740251] __warn+0xc1/0xe0 [ 4.740265] warn_slowpath_fmt+0x4a/0x50 [ 4.740281] ? insert_work+0x77/0xc0 [ 4.740355] ? fwtable_write32+0x90/0x130 [i915] [ 4.740431] __unclaimed_reg_debug+0x44/0x50 [i915] [ 4.740507] fwtable_read32+0xd8/0x130 [i915] [ 4.740575] i915_hpd_irq_setup+0xa5/0x100 [i915] [ 4.740649] intel_hpd_init+0x68/0x80 [i915] [ 4.740716] i915_driver_load+0xe19/0x1380 [i915] [ 4.740784] i915_pci_probe+0x32/0x90 [i915] [ 4.740799] pci_device_probe+0x8b/0xf0 [ 4.740815] driver_probe_device+0x2b6/0x450 [ 4.740828] __driver_attach+0xda/0xe0 [ 4.740841] ? driver_probe_device+0x450/0x450 [ 4.740853] bus_for_each_dev+0x5b/0x90 [ 4.740865] driver_attach+0x19/0x20 [ 4.740878] bus_add_driver+0x166/0x260 [ 4.740892] driver_register+0x5b/0xd0 [ 4.740906] ? 0xffffffffa0166000 [ 4.740920] __pci_register_driver+0x47/0x50 [ 4.740985] i915_init+0x5c/0x5e [i915] [ 4.740999] do_one_initcall+0x3e/0x160 [ 4.741015] ? __vunmap+0x7c/0xc0 [ 4.741029] ? kmem_cache_alloc+0xcf/0x120 [ 4.741045] do_init_module+0x55/0x1c4 [ 4.741060] load_module+0x1f3f/0x25b0 [ 4.741073] ? __symbol_put+0x40/0x40 [ 4.741086] ? kernel_read_file+0x100/0x190 [ 4.741100] SYSC_finit_module+0xbc/0xf0 [ 4.741112] SyS_finit_module+0x9/0x10 [ 4.741125] entry_SYSCALL_64_fastpath+0x17/0x98 [ 4.741135] RIP: 0033:0x7f8559a140f9 [ 4.741145] RSP: 002b:00007fff7509a3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 4.741161] RAX: ffffffffffffffda RBX: 00007f855aba02d1 RCX: 00007f8559a140f9 [ 4.741172] RDX: 0000000000000000 RSI: 000055b6db0914f0 RDI: 0000000000000011 [ 4.741183] RBP: 0000000000020000 R08: 0000000000000000 R09: 000000000000000e [ 4.741193] R10: 0000000000000011 R11: 0000000000000246 R12: 000055b6db0854d0 [ 4.741204] R13: 000055b6db091150 R14: 0000000000000000 R15: 000055b6db035924 See comment (1) from Chris on bug 98255 as food for thought. *** Bug 98255 has been marked as a duplicate of this bug. *** (In reply to Jari Tahvanainen from comment #3) > See comment (1) from Chris on bug 98255 as food for thought. I can confirm that the patch from bug 98255 comment 1 fixes this issue for me. Patch confirmed as a fix The patch hasn't been applied yet (lacks review), so the bug remains. Patch sent for review https://patchwork.freedesktop.org/series/19687/ commit 262fd485ac6b476479f41f00bb104f6a1766ae66 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Wed Feb 15 13:15:47 2017 +0000 drm/i915: Only enable hotplug interrupts if the display interrupts are enabled |
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