| Summary: | [all] circular locking dependency detected: crtc_ww_class_mutex vs dev->mode_config.mutex | ||||||
|---|---|---|---|---|---|---|---|
| Product: | DRI | Reporter: | Tomi Sarvela <tomi.p.sarvela> | ||||
| Component: | DRM/Intel | Assignee: | Matt Roper <matthew.d.roper> | ||||
| Status: | CLOSED FIXED | QA Contact: | Intel GFX Bugs mailing list <intel-gfx-bugs> | ||||
| Severity: | blocker | ||||||
| Priority: | highest | CC: | intel-gfx-bugs | ||||
| Version: | DRI git | ||||||
| Hardware: | x86-64 (AMD64) | ||||||
| OS: | Linux (All) | ||||||
| Whiteboard: | |||||||
| i915 platform: | BDW, HSW, ILK, IVB, SNB | i915 features: | |||||
| Attachments: |
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This will be fixed by the next version of [PATCH] drm/i915: Handle error paths during watermark sanitization properly The fix should be merged to di-nightly now; please re-open if there are still problems. |
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Created attachment 120953 [details] Serial log from deadlocked testhost One of the following commits caused i915 boot deadlock with kernel configuration: CONFIG_DEBUG_RT_MUTEXES=y CONFIG_DEBUG_MUTEXES=y CONFIG_DEBUG_WW_MUTEX_SLOWPATH=y 89d0d1b6f0e9c3a6b90476bd115cfe1881646fd6 drm-intel-nightly: 2016y-01m-06d-10h-37m-17s UTC integration manifest d93c037246104e403436ffe339bcb832185d0627 drm/i915: Sanitize watermarks after hardware state readout (v4) 151268821e6f08956b28b6ff90fae187a5b230b8 drm/i915: Add extra paranoia to ILK watermark calculations ee91a15972cc70efa4d17b4bbdb61ff314528110 drm/i915: Convert hsw_compute_linetime_wm to use in-flight state 0a8d8a8667c7e66f4fa2498be18d47f8b296b430 drm/i915: Setup clipped src/dest coordinates during FB reconstruction (v2) c4e42196d47969a8b0df5eae734bc86c8df7cf44 drm-intel-nightly: 2016y-01m-06d-10h-07m-52s UTC integration manifest Platforms affected: ILK (HP Elitebook 8440p) SNB (Lenovo X220 Tablet) IVB (Lenovo T430s) HSW (Brixbox, Gigabyte i5k with GT2, Dell XPS12) BDW (Intel UltraBook, Intel NUC i7)