netsniff-ng.git - A high-performance Linux networking toolkit

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Diffstat (limited to 'keypair.h')

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as the serialisation barrier instead. [ 350.298052] [drm:intel_runtime_resume [i915]] Resuming device [ 350.308606] [ 350.310520] =============================== [ 350.315560] [ INFO: suspicious RCU usage. ] [ 350.320554] 4.8.0-rc8-bsw-rapl+ #3133 Tainted: G U W [ 350.327208] ------------------------------- [ 350.331977] ../drivers/gpu/drm/i915/i915_gem_request.h:371 suspicious rcu_dereference_protected() usage! [ 350.342619] [ 350.342619] other info that might help us debug this: [ 350.342619] [ 350.351593] [ 350.351593] rcu_scheduler_active = 1, debug_locks = 0 [ 350.358952] 3 locks held by Xorg/320: [ 350.363077] #0: (&dev->mode_config.mutex){+.+.+.}, at: [<ffffffffa030589c>] drm_modeset_lock_all+0x3c/0xd0 [drm] [ 350.375162] #1: (crtc_ww_class_acquire){+.+.+.}, at: [<ffffffffa03058a6>] drm_modeset_lock_all+0x46/0xd0 [drm] [ 350.387022] #2: (crtc_ww_class_mutex){+.+.+.}, at: [<ffffffffa0305056>] drm_modeset_lock+0x36/0x110 [drm] [ 350.398236] [ 350.398236] stack backtrace: [ 350.403196] CPU: 1 PID: 320 Comm: Xorg Tainted: G U W 4.8.0-rc8-bsw-rapl+ #3133 [ 350.412457] Hardware name: Intel Corporation CHERRYVIEW C0 PLATFORM/Braswell CRB, BIOS BRAS.X64.X088.R00.1510270350 10/27/2015 [ 350.425212] 0000000000000000 ffff8801680a78c8 ffffffff81332187 ffff88016c5c5000 [ 350.433611] 0000000000000001 ffff8801680a78f8 ffffffff810ca6da ffff88016cc8b0f0 [ 350.442012] ffff88016cc80000 ffff88016cc80000 ffff880177ad0000 ffff8801680a7948 [ 350.450409] Call Trace: [ 350.453165] [<ffffffff81332187>] dump_stack+0x67/0x90 [ 350.458931] [<ffffffff810ca6da>] lockdep_rcu_suspicious+0xea/0x120 [ 350.466002] [<ffffffffa039e8dd>] fence_update+0xbd/0x670 [i915] [ 350.472766] [<ffffffffa039efe2>] i915_gem_restore_fences+0x52/0x70 [i915] [ 350.480496] [<ffffffffa0368f42>] vlv_resume_prepare+0x72/0x570 [i915] [ 350.487839] [<ffffffffa0369802>] intel_runtime_resume+0x102/0x210 [i915] [ 350.495442] [<ffffffff8137f26f>] pci_pm_runtime_resume+0x7f/0xb0 [ 350.502274] [<ffffffff8137f1f0>] ? pci_restore_standard_config+0x40/0x40 [ 350.509883] [<ffffffff814401c5>] __rpm_callback+0x35/0x70 [ 350.516037] [<ffffffff8137f1f0>] ? pci_restore_standard_config+0x40/0x40 [ 350.523646] [<ffffffff81440224>] rpm_callback+0x24/0x80 [ 350.529604] [<ffffffff8137f1f0>] ? pci_restore_standard_config+0x40/0x40 [ 350.537212] [<ffffffff814417bd>] rpm_resume+0x4ad/0x740 [ 350.543161] [<ffffffff81441aa1>] __pm_runtime_resume+0x51/0x80 [ 350.549824] [<ffffffffa03889c8>] intel_runtime_pm_get+0x28/0x90 [i915] [ 350.557265] [<ffffffffa0388a53>] intel_display_power_get+0x23/0x50 [i915] [ 350.565001] [<ffffffffa03ef23d>] intel_atomic_commit_tail+0xdfd/0x10b0 [i915] [ 350.573106] [<ffffffffa034b2e9>] ? drm_atomic_helper_swap_state+0x159/0x300 [drm_kms_helper] [ 350.582659] [<ffffffff81615091>] ? _raw_spin_unlock+0x31/0x50 [ 350.589205] [<ffffffffa034b2e9>] ? drm_atomic_helper_swap_state+0x159/0x300 [drm_kms_helper] [ 350.598787] [<ffffffffa03ef8a5>] intel_atomic_commit+0x3b5/0x500 [i915] [ 350.606319] [<ffffffffa03061dc>] ? drm_atomic_set_crtc_for_connector+0xcc/0x100 [drm] [ 350.615209] [<ffffffffa0306b49>] drm_atomic_commit+0x49/0x50 [drm] [ 350.622242] [<ffffffffa034dee8>] drm_atomic_helper_set_config+0x88/0xc0 [drm_kms_helper] [ 350.631419] [<ffffffffa02f94ac>] drm_mode_set_config_internal+0x6c/0x120 [drm] [ 350.639623] [<ffffffffa02fa94c>] drm_mode_setcrtc+0x22c/0x4d0 [drm] [ 350.646760] [<ffffffffa02f0f19>] drm_ioctl+0x209/0x460 [drm] [ 350.653217] [<ffffffffa02fa720>] ? drm_mode_getcrtc+0x150/0x150 [drm] [ 350.660536] [<ffffffff810c984a>] ? __lock_is_held+0x4a/0x70 [ 350.666885] [<ffffffff81202303>] do_vfs_ioctl+0x93/0x6b0 [ 350.672939] [<ffffffff8120f843>] ? __fget+0x113/0x200 [ 350.678797] [<ffffffff8120f735>] ? __fget+0x5/0x200 [ 350.684361] [<ffffffff81202964>] SyS_ioctl+0x44/0x80 [ 350.690030] [<ffffffff81001deb>] do_syscall_64+0x5b/0x120 [ 350.696184] [<ffffffff81615ada>] entry_SYSCALL64_slow_path+0x25/0x25 Note we also have to remember the lesson from commit 4fc788f5ee3d ("drm/i915: Flush delayed fence releases after reset") where we have to flush any changes to the fence on restore. v2: Replace call to release user mmaps with an assertion that they have already been zapped. Fixes: 49ef5294cda2 ("drm/i915: Move fence tracking from object to vma") Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20161012114827.17031-1-chris@chris-wilson.co.uk (cherry picked from commit 4676dc838b37ed8c6f3da4571cb4a04cbd604801) Signed-off-by: Jani Nikula <jani.nikula@intel.com>

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