- 01 Nov, 2016 35 commits
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Ville Syrjälä authored
Unify our approach to things by passing around dev_priv instead of dev. Signed-off-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1477946245-14134-21-git-send-email-ville.syrjala@linux.intel.comReviewed-by:
Chris Wilson <chris@chris-wilson.co.uk>
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Ville Syrjälä authored
Unify our approach to things by passing around dev_priv instead of dev. Signed-off-by:
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Ville Syrjälä authored
Unify our approach to things by passing around dev_priv instead of dev. Signed-off-by:
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Ville Syrjälä authored
Unify our approach to things by passing around dev_priv instead of dev. Signed-off-by:
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Ville Syrjälä authored
Unify our approach to things by passing around dev_priv instead of dev. Signed-off-by:
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Ville Syrjälä authored
Unify our approach to things by passing around dev_priv instead of dev. Signed-off-by:
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Ville Syrjälä authored
Unify our approach to things by passing around dev_priv instead of dev. Signed-off-by:
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Ville Syrjälä authored
Unify our approach to things by passing around dev_priv instead of dev. Signed-off-by:
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Ville Syrjälä authored
Unify our approach to things by passing around dev_priv instead of dev. Signed-off-by:
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Ville Syrjälä authored
Replace the open coded dev_priv->pipe_to_crtc_mapping[] usage with intel_get_crtc_for_pipe(). Mostly done with coccinelle, with a few manual tweaks @@ expression E1, E2; @@ ( - E1->pipe_to_crtc_mapping[E2] + intel_get_crtc_for_pipe(E1, E2) | - E1->plane_to_crtc_mapping[E2] + intel_get_crtc_for_plane(E1, E2) ) Signed-off-by:
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Ville Syrjälä authored
Unify our approach to things by passing around dev_priv instead of dev. Signed-off-by:
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Ville Syrjälä authored
Unify our approach to things by passing around dev_priv instead of dev. Signed-off-by:
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Ville Syrjälä authored
Unify our approach to things by passing around dev_priv instead of dev. Signed-off-by:
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Ville Syrjälä authored
Unify our approach to things by passing around dev_priv instead of dev. Signed-off-by:
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Ville Syrjälä authored
A lot of users of the {pipe,plane}_to_crtc_mapping[] will end up casting the result to intel_crtc, so let's just store the intel_crtc pointer in the first place. Signed-off-by: -
Ville Syrjälä authored
Unify our approach to things by using intel_crtc instead of drm_crtc. Signed-off-by:
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Ville Syrjälä authored
Unify our approach to things by passing around intel_crtc instead of drm_crtc. Signed-off-by:
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Ville Syrjälä authored
Unify our approach to things by passing around intel_crtc instead of drm_crtc. Signed-off-by:
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Ville Syrjälä authored
Unify our approach to things by passing around dev_priv instead of dev. While at it let's do some house cleaning: s/intel_foo/foo/ and move things into tighter scope. Signed-off-by:
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Ville Syrjälä authored
Unify our approach to things by passing around dev_priv instead of dev. Signed-off-by:
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Chris Wilson authored
For legacy contexts we employ an optimisation to only flush the context when binding into the global GTT. This avoids stalling on the GPU when reloading an active context. Wrap this detail up into a helper and export it for a potential third user. (Longer term, context pinning needs to be reworked as the current handling of switch context pins too late and so risks eviction and corrupting the request. Plans, plans, plans.) v2: Expand the comment explaining the optimisation for avoiding the stall on active contexts. Signed-off-by:
Matthew Auld <matthew.auld@intel.com>
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Maarten Lankhorst authored
There's no need to keep a duplicate skl_pipe_wm around any more, everything can be discovered from crtc_state, which we pass around correctly now even in case of plane disable. The copy in intel_crtc->wm.skl.active is equal to crtc_state->wm.skl.optimal after the atomic commit completes. It's useful for two-step watermark programming, but not required for gen9+ which does it in a single step. We can pull the old allocation from old_crtc_state. Signed-off-by:
Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Matt Roper <matthew.d.roper@intel.com> Reviewed-by:
Paulo Zanoni <paulo.r.zanoni@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1477489299-25777-9-git-send-email-maarten.lankhorst@linux.intel.comReviewed-by:
Matt Roper <matthew.d.roper@intel.com>
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Maarten Lankhorst authored
Move calculating minimum allocations to a helper, which cleans up the code some more. The cursor is still allocated in advance because it doesn't count towards data rate and should always be reserved. changes since v1: - Change comment to have a extra opening line. (Matt) - Rebase to remove unused plane->pipe == pipe, handled by the iterator now. (Paulo) Reviewed-by:
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Maarten Lankhorst authored
This is not required any more now that we get fresh state from drm_atomic_crtc_state_for_each_plane_state. Zero all state in advance. Signed-off-by:
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Maarten Lankhorst authored
It's only used in one function, and can be calculated without caching it in the global struct by using drm_atomic_crtc_state_for_each_plane_state. There are loops over all planes, including planes that don't exist. This is harmless, because data_rate will always be 0 for them and we never program them when updating watermarks. Changes since v1: - Rename rate back to data_rate, and change array name to plane_data_rate. (Matt) - Remove whitespace. (Paulo) Signed-off-by:
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Maarten Lankhorst authored
Using for_each_intel_plane_on_crtc will allow us to find all allocations that may have changed, not just the one added by the atomic state. This will print changes to plane allocations for crtc's when some planes are not added to the atomic state. Changes since v1: - Rephrase commit message. (Ville) - Use plane->base.id and plane->name to kill off cursor special case. (Ville) - Add intel_crtc to prevent a line wrap. (Paulo) - Line wrap debug messages. Signed-off-by:
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Maarten Lankhorst authored
I'm planning on getting rid of all obj->state dereferences, and replace thhem with accessor functions. Remove this one early, they're equivalent because removed planes are already part of the state, else they could not have been removed. Signed-off-by:
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Maarten Lankhorst authored
Caching is not required, drm_atomic_crtc_state_for_each_plane_state can be used to inspect the states of all planes assigned to the CRTC even if they are not part of _state, so we can just recalculate every time. Changes since v1: - Remove plane->pipe checks, they're implied by the macros. - Split unrelated changes to a separate commit. Signed-off-by:
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Chris Wilson authored
The shrinker may appear to recurse into obj->mm.lock as the shrinker may be called from a direct reclaim path whilst handling get_pages. We filter out recursing on the same obj->mm.lock by inspecting obj->mm.pages, but we do want to take the lock on a second object in order to reap their pages. lockdep spots the recursion on the same lockclass and needs annotation to avoid a false positive. To keep the two paths distinct, create an enum to indicate which subclass of obj->mm.lock we are using. This removes the false positive and avoids masking real bugs. Suggested-by:
Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by:
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Chris Wilson authored
With full-ppgtt one of the main bottlenecks is the lookup of the VMA underneath the object. For execbuf there is merit in having a very fast direct lookup of ctx:handle to the vma using a hashtree, but that still leaves a large number of other lookups. One way to speed up the lookup would be to use a rhashtable, but that requires extra allocations and may exhibit poor worse case behaviour. An alternative is to use an embedded rbtree, i.e. no extra allocations and deterministic behaviour, but at the slight cost of O(lgN) lookups (instead of O(1) for rhashtable). The major of such tree will be very shallow and so not much slower, and still scales much, much better than the current unsorted list. v2: Bump vma_compare() to return a long, as we return the result of comparing two pointers. References: https://bugs.freedesktop.org/show_bug.cgi?id=87726Signed-off-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20161101115400.15647-1-chris@chris-wilson.co.uk
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Chris Wilson authored
If we have a tiled object and an unknown CPU swizzle pattern, we pin the pages to prevent the object from being swapped out (and us corrupting the contents as we do not know the access pattern and so cannot convert it to linear and back to tiled on reuse). This requires us to remember to drop the extra pinning when freeing the object, or else we trigger warnings about the pin leak. In commit fbbd37b3 ("drm/i915: Move object release to a freelist + worker"), the object free path was deferred to a worker, but the unpinning of the quirk, along with marking the object as reclaimable, was left on the immediate path (so that if required we could reclaim the pages under memory pressure as early as possible). However, this split introduced a bug where the pages were no longer being unpinned if they were marked as unneeded. [ 231.800401] WARNING: CPU: 1 PID: 90 at drivers/gpu/drm/i915/i915_gem.c:4275 __i915_gem_free_objects+0x326/0x3c0 [i915] [ 231.800403] WARN_ON(i915_gem_object_has_pinned_pages(obj)) [ 231.800405] Modules linked in: [ 231.800406] snd_hda_intel i915 snd_hda_codec_generic mei_me snd_hda_codec coretemp snd_hwdep mei lpc_ich snd_hda_core snd_pcm e1000e ptp pps_core [last unloaded: i915] [ 231.800426] CPU: 1 PID: 90 Comm: kworker/1:4 Tainted: G U 4.9.0-rc2-CI-CI_DRM_1780+ #1 [ 231.800428] Hardware name: LENOVO 7465CTO/7465CTO, BIOS 6DET44WW (2.08 ) 04/22/2009 [ 231.800456] Workqueue: events __i915_gem_free_work [i915] [ 231.800459] ffffc9000034fc80 ffffffff8142dd65 ffffc9000034fcd0 0000000000000000 [ 231.800465] ffffc9000034fcc0 ffffffff8107e4e6 000010b300000001 0000000000001000 [ 231.800469] ffff88011d3db740 ffff880130ef0000 0000000000000000 ffff880130ef5ea0 [ 231.800474] Call Trace: [ 231.800479] [<ffffffff8142dd65>] dump_stack+0x67/0x92 [ 231.800484] [<ffffffff8107e4e6>] __warn+0xc6/0xe0 [ 231.800487] [<ffffffff8107e54a>] warn_slowpath_fmt+0x4a/0x50 [ 231.800491] [<ffffffff811d12ac>] ? kmem_cache_free+0x2dc/0x340 [ 231.800520] [<ffffffffa009ef36>] __i915_gem_free_objects+0x326/0x3c0 [i915] [ 231.800548] [<ffffffffa009effe>] __i915_gem_free_work+0x2e/0x50 [i915] [ 231.800552] [<ffffffff8109c27c>] process_one_work+0x1ec/0x6b0 [ 231.800555] [<ffffffff8109c1f6>] ? process_one_work+0x166/0x6b0 [ 231.800558] [<ffffffff8109c789>] worker_thread+0x49/0x490 [ 231.800561] [<ffffffff8109c740>] ? process_one_work+0x6b0/0x6b0 [ 231.800563] [<ffffffff8109c740>] ? process_one_work+0x6b0/0x6b0 [ 231.800566] [<ffffffff810a2aab>] kthread+0xeb/0x110 [ 231.800569] [<ffffffff810a29c0>] ? kthread_park+0x60/0x60 [ 231.800573] [<ffffffff818164a7>] ret_from_fork+0x27/0x40 Moving to a separate flag for tracking the quirked pin is overkill for the bug (since we only have to interchange the two tests in i915_gem_free_object) but it does reduce a complicated test on all objects and provide a sanitycheck for uncommon code paths. Fixes: fbbd37b3 ("drm/i915: Move object release to a freelist + worker") Signed-off-by:
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Chris Wilson authored
Whilst waiting on a request, we may do so without holding any locks or any guards beyond a reference to the request. In order to avoid taking locks within request deallocation, we drop references to its timeline (via the context and ppgtt) upon retirement. We should avoid chasing such pointers outside of their control, in particular we inspect the request->timeline to see if we may restore the RPS waitboost for a client. If we instead look at the engine->timeline, we will have similar behaviour on both full-ppgtt and !full-ppgtt systems and reduce the amount of reward we give towards stalling clients (i.e. only if the client stalls and the GPU is uncontended does it reclaim its boost). This restores behaviour back to pre-timelines, whilst fixing: [ 645.078485] BUG: KASAN: use-after-free in i915_gem_object_wait_fence+0x1ee/0x2e0 at addr ffff8802335643a0 [ 645.078577] Read of size 4 by task gem_exec_schedu/28408 [ 645.078638] CPU: 1 PID: 28408 Comm: gem_exec_schedu Not tainted 4.9.0-rc2+ #64 [ 645.078724] Hardware name: / , BIOS PYBSWCEL.86A.0027.2015.0507.1758 05/07/2015 [ 645.078816] ffff88022daef9a0 ffffffff8143d059 ffff880235402a80 ffff880233564200 [ 645.078998] ffff88022daef9c8 ffffffff81229c5c ffff88022daefa48 ffff880233564200 [ 645.079172] ffff880235402a80 ffff88022daefa38 ffffffff81229ef0 000000008110a796 [ 645.079345] Call Trace: [ 645.079404] [<ffffffff8143d059>] dump_stack+0x68/0x9f [ 645.079467] [<ffffffff81229c5c>] kasan_object_err+0x1c/0x70 [ 645.079534] [<ffffffff81229ef0>] kasan_report_error+0x1f0/0x4b0 [ 645.079601] [<ffffffff8122a244>] kasan_report+0x34/0x40 [ 645.079676] [<ffffffff81634f5e>] ? i915_gem_object_wait_fence+0x1ee/0x2e0 [ 645.079741] [<ffffffff81229951>] __asan_load4+0x61/0x80 [ 645.079807] [<ffffffff81634f5e>] i915_gem_object_wait_fence+0x1ee/0x2e0 [ 645.079876] [<ffffffff816364bf>] i915_gem_object_wait+0x19f/0x590 [ 645.079944] [<ffffffff81636320>] ? i915_gem_object_wait_priority+0x500/0x500 [ 645.080016] [<ffffffff8110fb30>] ? debug_show_all_locks+0x1e0/0x1e0 [ 645.080084] [<ffffffff8110abdc>] ? check_chain_key+0x14c/0x210 [ 645.080157] [<ffffffff8110a796>] ? __lock_is_held+0x46/0xc0 [ 645.080226] [<ffffffff8163bc61>] ? i915_gem_set_domain_ioctl+0x141/0x690 [ 645.080296] [<ffffffff8163bcc2>] i915_gem_set_domain_ioctl+0x1a2/0x690 [ 645.080366] [<ffffffff811f8f85>] ? __might_fault+0x75/0xe0 [ 645.080433] [<ffffffff815a55f7>] drm_ioctl+0x327/0x640 [ 645.080508] [<ffffffff8163bb20>] ? i915_gem_obj_prepare_shmem_write+0x3a0/0x3a0 [ 645.080603] [<ffffffff815a52d0>] ? drm_ioctl_permit+0x120/0x120 [ 645.080670] [<ffffffff8110abdc>] ? check_chain_key+0x14c/0x210 [ 645.080738] [<ffffffff81275717>] do_vfs_ioctl+0x127/0xa20 [ 645.080804] [<ffffffff8120268c>] ? do_mmap+0x47c/0x580 [ 645.080871] [<ffffffff811da567>] ? vm_mmap_pgoff+0x117/0x140 [ 645.080938] [<ffffffff812755f0>] ? ioctl_preallocate+0x150/0x150 [ 645.081011] [<ffffffff81108c53>] ? up_write+0x23/0x50 [ 645.081078] [<ffffffff811da567>] ? vm_mmap_pgoff+0x117/0x140 [ 645.081145] [<ffffffff811da450>] ? vma_is_stack_for_current+0x90/0x90 [ 645.081214] [<ffffffff8110d853>] ? mark_held_locks+0x23/0xc0 [ 645.082030] [<ffffffff81288408>] ? __fget+0x168/0x250 [ 645.082106] [<ffffffff819ad517>] ? entry_SYSCALL_64_fastpath+0x5/0xb1 [ 645.082176] [<ffffffff81288592>] ? __fget_light+0xa2/0xc0 [ 645.082242] [<ffffffff8127604c>] SyS_ioctl+0x3c/0x70 [ 645.082309] [<ffffffff819ad52e>] entry_SYSCALL_64_fastpath+0x1c/0xb1 [ 645.082374] Object at ffff880233564200, in cache kmalloc-8192 size: 8192 [ 645.082431] Allocated: [ 645.082480] PID = 28408 [ 645.082535] [ 645.082566] [<ffffffff8103ae66>] save_stack_trace+0x16/0x20 [ 645.082623] [ 645.082656] [<ffffffff81228b06>] save_stack+0x46/0xd0 [ 645.082716] [ 645.082756] [<ffffffff812292fd>] kasan_kmalloc+0xad/0xe0 [ 645.082817] [ 645.082848] [<ffffffff81631752>] i915_ppgtt_create+0x52/0x220 [ 645.082908] [ 645.082941] [<ffffffff8161db96>] i915_gem_create_context+0x396/0x560 [ 645.083027] [ 645.083059] [<ffffffff8161f857>] i915_gem_context_create_ioctl+0x97/0xf0 [ 645.083152] [ 645.083183] [<ffffffff815a55f7>] drm_ioctl+0x327/0x640 [ 645.083243] [ 645.083274] [<ffffffff81275717>] do_vfs_ioctl+0x127/0xa20 [ 645.083334] [ 645.083372] [<ffffffff8127604c>] SyS_ioctl+0x3c/0x70 [ 645.083432] [ 645.083464] [<ffffffff819ad52e>] entry_SYSCALL_64_fastpath+0x1c/0xb1 [ 645.083551] Freed: [ 645.083599] PID = 27629 [ 645.083648] [ 645.083676] [<ffffffff8103ae66>] save_stack_trace+0x16/0x20 [ 645.083738] [ 645.083770] [<ffffffff81228b06>] save_stack+0x46/0xd0 [ 645.083830] [ 645.083862] [<ffffffff81229203>] kasan_slab_free+0x73/0xc0 [ 645.083922] [ 645.083961] [<ffffffff812279c9>] kfree+0xa9/0x170 [ 645.084021] [ 645.084053] [<ffffffff81629f60>] i915_ppgtt_release+0x100/0x180 [ 645.084139] [ 645.084171] [<ffffffff8161d414>] i915_gem_context_free+0x1b4/0x230 [ 645.084257] [ 645.084288] [<ffffffff816537b2>] intel_lr_context_unpin+0x192/0x230 [ 645.084380] [ 645.084413] [<ffffffff81645250>] i915_gem_request_retire+0x620/0x630 [ 645.084500] [ 645.085226] [<ffffffff816473d1>] i915_gem_retire_requests+0x181/0x280 [ 645.085313] [ 645.085352] [<ffffffff816352ba>] i915_gem_retire_work_handler+0xca/0xe0 [ 645.085440] [ 645.085471] [<ffffffff810c725b>] process_one_work+0x4fb/0x920 [ 645.085532] [ 645.085562] [<ffffffff810c770d>] worker_thread+0x8d/0x840 [ 645.085622] [ 645.085653] [<ffffffff810d21e5>] kthread+0x185/0x1b0 [ 645.085718] [ 645.085750] [<ffffffff819ad7a7>] ret_from_fork+0x27/0x40 [ 645.085811] Memory state around the buggy address: [ 645.085869] ffff880233564280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 645.085956] ffff880233564300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 645.086053] >ffff880233564380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 645.086138] ^ [ 645.086193] ffff880233564400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 645.086283] ffff880233564480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb v2: Add a comment to document the hint like nature of intel_engine_last_submit() Fixes: 73cb9701 ("drm/i915: Combine seqno + tracking into a global timeline struct") Fixes: 80b204bc ("drm/i915: Enable multiple timelines") Signed-off-by:
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Chris Wilson authored
During shrinking, we walk over the list of objects searching for victims. Any that are not removed are put back into the global list. Currently, they are put back in order (at the front) which means they will be first to be scanned again. If we instead move them to the rear of the list, we will scan new potential victims on the next pass and waste less time rescanning unshrinkable objects. Normally the lists are kept in rough order to shrinking (with object least frequently used at the start), by moving just scanned objects to the rear we are acknowledging that they are still in use. Signed-off-by:
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Chris Wilson authored
In the shrinker, we can safely remove an empty object (obj->mm.pages == NULL) after having discarded the pages because we are holding the struct_mutex. Signed-off-by:
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Chris Wilson authored
To flush all call_rcu() tasks (here from i915_gem_free_object()) we need to call rcu_barrier() (not synchronize_rcu()). If we don't then we may still have objects being freed as we continue to teardown the driver - in particular, the recently released rings may race with the memory manager shutdown resulting in sporadic: [ 142.217186] WARNING: CPU: 7 PID: 6185 at drivers/gpu/drm/drm_mm.c:932 drm_mm_takedown+0x2e/0x40 [ 142.217187] Memory manager not clean during takedown. [ 142.217187] Modules linked in: i915(-) x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel lpc_ich snd_hda_codec_realtek snd_hda_codec_generic mei_me mei snd_hda_codec_hdmi snd_hda_codec snd_hwdep snd_hda_core snd_pcm e1000e ptp pps_core [last unloaded: snd_hda_intel] [ 142.217199] CPU: 7 PID: 6185 Comm: rmmod Not tainted 4.9.0-rc2-CI-Trybot_242+ #1 [ 142.217199] Hardware name: LENOVO 10AGS00601/SHARKBAY, BIOS FBKT34AUS 04/24/2013 [ 142.217200] ffffc90002ecfce0 ffffffff8142dd65 ffffc90002ecfd30 0000000000000000 [ 142.217202] ffffc90002ecfd20 ffffffff8107e4e6 000003a40778c2a8 ffff880401355c48 [ 142.217204] ffff88040778c2a8 ffffffffa040f3c0 ffffffffa040f4a0 00005621fbf8b1f0 [ 142.217206] Call Trace: [ 142.217209] [<ffffffff8142dd65>] dump_stack+0x67/0x92 [ 142.217211] [<ffffffff8107e4e6>] __warn+0xc6/0xe0 [ 142.217213] [<ffffffff8107e54a>] warn_slowpath_fmt+0x4a/0x50 [ 142.217214] [<ffffffff81559e3e>] drm_mm_takedown+0x2e/0x40 [ 142.217236] [<ffffffffa035c02a>] i915_gem_cleanup_stolen+0x1a/0x20 [i915] [ 142.217246] [<ffffffffa034c581>] i915_ggtt_cleanup_hw+0x31/0xb0 [i915] [ 142.217253] [<ffffffffa0310311>] i915_driver_cleanup_hw+0x31/0x40 [i915] [ 142.217260] [<ffffffffa0312001>] i915_driver_unload+0x141/0x1a0 [i915] [ 142.217268] [<ffffffffa031c2c4>] i915_pci_remove+0x14/0x20 [i915] [ 142.217269] [<ffffffff8147d214>] pci_device_remove+0x34/0xb0 [ 142.217271] [<ffffffff8157b14c>] __device_release_driver+0x9c/0x150 [ 142.217272] [<ffffffff8157bcc6>] driver_detach+0xb6/0xc0 [ 142.217273] [<ffffffff8157abe3>] bus_remove_driver+0x53/0xd0 [ 142.217274] [<ffffffff8157c787>] driver_unregister+0x27/0x50 [ 142.217276] [<ffffffff8147c265>] pci_unregister_driver+0x25/0x70 [ 142.217287] [<ffffffffa03d764c>] i915_exit+0x1a/0x71 [i915] [ 142.217289] [<ffffffff811136b3>] SyS_delete_module+0x193/0x1e0 [ 142.217291] [<ffffffff818174ae>] entry_SYSCALL_64_fastpath+0x1c/0xb1 [ 142.217292] ---[ end trace 6fd164859c154772 ]--- [ 142.217505] [drm:show_leaks] *ERROR* node [6b6b6b6b6b6b6b6b + 6b6b6b6b6b6b6b6b]: inserted at [<ffffffff81559ff3>] save_stack.isra.1+0x53/0xa0 [<ffffffff8155a98d>] drm_mm_insert_node_in_range_generic+0x2ad/0x360 [<ffffffffa035bf23>] i915_gem_stolen_insert_node_in_range+0x93/0xe0 [i915] [<ffffffffa035c855>] i915_gem_object_create_stolen+0x75/0xb0 [i915] [<ffffffffa036a51a>] intel_engine_create_ring+0x9a/0x140 [i915] [<ffffffffa036a921>] intel_init_ring_buffer+0xf1/0x440 [i915] [<ffffffffa036be1b>] intel_init_render_ring_buffer+0xab/0x1b0 [i915] [<ffffffffa0363d08>] intel_engines_init+0xc8/0x210 [i915] [<ffffffffa0355d7c>] i915_gem_init+0xac/0xf0 [i915] [<ffffffffa0311454>] i915_driver_load+0x9c4/0x1430 [i915] [<ffffffffa031c2f8>] i915_pci_probe+0x28/0x40 [i915] [<ffffffff8147d315>] pci_device_probe+0x85/0xf0 [<ffffffff8157b7ff>] driver_probe_device+0x21f/0x430 [<ffffffff8157baee>] __driver_attach+0xde/0xe0 In particular note that the node was being poisoned as we inspected the list, a clear indication that the object is being freed as we make the assertion. v2: Don't loop, just assert that we do all the work required as that will be better at detecting further errors. Fixes: fbbd37b3 ("drm/i915: Move object release to a freelist + worker") Signed-off-by:
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- 31 Oct, 2016 5 commits
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Ville Syrjälä authored
Kill the switch statement from the sprite init code and replace with a more straightforward if ladder. Now each significant evolution of the sprite hardware is in its own neat box. Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch>
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Ville Syrjälä authored
Due to the plane->index not getting readjusted in drm_plane_cleanup(), we can't continue initialization of some plane/crtc init fails. Well, we sort of could I suppose if we left all initialized planes on the list, but that would expose those planes to userspace as well. But for crtcs the situation is even worse since we assume that pipe==crtc index occasionally, so we can't really deal with a partially initialize set of crtcs. So seems safest to just abort the entire thing if anything goes wrong. All the failure paths here are kmalloc()s anyway, so it seems unlikely we'd get very far if these start failing. v2: Add (enum plane) case to silence gcc Signed-off-by:
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Ville Syrjälä authored
The zpos magic sorting uses the object ID to solve conflicting zpos values. Let's initialize our planes in an order that makes the object IDs agree with the normal primary->sprites->cursor z order. Signed-off-by:
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Ville Syrjälä authored
We don't currently implement support for sprite planes on pre-ilk platforms, so let's leave num_sprites at 0 so that we don't get spurious errors during driver init. Signed-off-by:
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Chris Wilson authored
As we may allocate from within the obj->mm.lock we may enter the shrinker for direct reclaim. Operating on the current object is prevented by checking for obj->mm.pages (which is only set as the last operation in the allocation path). However, we need to identify the single recursion of accessing another object's obj->mm.lock as the two locks have identical class and so appear to be the same to lockdep, convincing it that a deadlock is possible. Use mutex_lock_nested() to remove the false positive. [ 2165.945734] ================================= [ 2165.945749] [ INFO: inconsistent lock state ] [ 2165.945765] 4.9.0-rc2+ #2 Tainted: G W [ 2165.945781] --------------------------------- [ 2165.945796] inconsistent {RECLAIM_FS-ON-W} -> {IN-RECLAIM_FS-W} usage. [ 2165.945816] kswapd0/62 [HC0[0]:SC0[0]:HE1:SE1] takes: (&obj->mm.lock){+.+.?.}, at: [<ffffffffc0289a1f>] i915_gem_shrink+0x29f/0x500 [i915] [ 2165.945904] {RECLAIM_FS-ON-W} state was registered at: [ 2165.945931] [<ffffffffb10bd50f>] mark_held_locks+0x6f/0xa0 [ 2165.945956] [<ffffffffb10bf889>] lockdep_trace_alloc+0x69/0xc0 [ 2165.945982] [<ffffffffb11eea53>] kmem_cache_alloc_trace+0x33/0x2a0 [ 2165.946019] [<ffffffffc028a28a>] i915_gem_object_get_pages_stolen+0x6a/0xd0 [i915] [ 2165.946060] [<ffffffffc027e1d0>] ____i915_gem_object_get_pages+0x20/0x60 [i915] [ 2165.946098] [<ffffffffc027e268>] __i915_gem_object_get_pages+0x58/0x70 [i915] [ 2165.946138] [<ffffffffc028a3dc>] _i915_gem_object_create_stolen+0xec/0x120 [i915] [ 2165.946177] [<ffffffffc028af73>] i915_gem_object_create_stolen_for_preallocated+0xf3/0x3f0 [i915] [ 2165.946222] [<ffffffffc02bae43>] intel_alloc_initial_plane_obj.isra.125+0xd3/0x200 [i915] [ 2165.946266] [<ffffffffc02cb1c1>] intel_modeset_init+0x931/0x1530 [i915] [ 2165.946301] [<ffffffffc023d584>] i915_driver_load+0xa14/0x14a0 [i915] [ 2165.946335] [<ffffffffc0248aff>] i915_pci_probe+0x4f/0x70 [i915] [ 2165.946362] [<ffffffffb13cc452>] local_pci_probe+0x42/0xa0 [ 2165.946386] [<ffffffffb13cd903>] pci_device_probe+0x103/0x150 [ 2165.946411] [<ffffffffb14adeb3>] driver_probe_device+0x223/0x430 [ 2165.946436] [<ffffffffb14ae1a3>] __driver_attach+0xe3/0xf0 [ 2165.946461] [<ffffffffb14ab943>] bus_for_each_dev+0x73/0xc0 [ 2165.946485] [<ffffffffb14ad5ee>] driver_attach+0x1e/0x20 [ 2165.946508] [<ffffffffb14ad003>] bus_add_driver+0x173/0x270 [ 2165.946533] [<ffffffffb14aee70>] driver_register+0x60/0xe0 [ 2165.946557] [<ffffffffb13cbd6d>] __pci_register_driver+0x5d/0x60 [ 2165.946606] [<ffffffffc0378057>] soundcore_open+0x17/0x230 [soundcore] [ 2165.946636] [<ffffffffb1000450>] do_one_initcall+0x50/0x180 [ 2165.946661] [<ffffffffb117fd2d>] do_init_module+0x5f/0x1f1 [ 2165.946685] [<ffffffffb1108964>] load_module+0x2174/0x2a80 [ 2165.946709] [<ffffffffb11094df>] SYSC_finit_module+0xdf/0x110 [ 2165.946734] [<ffffffffb110952e>] SyS_finit_module+0xe/0x10 [ 2165.946758] [<ffffffffb1742aea>] entry_SYSCALL_64_fastpath+0x18/0xad [ 2165.946776] irq event stamp: 90871 [ 2165.946788] hardirqs last enabled at (90871): [ 2165.946805] [<ffffffffb173e9da>] __mutex_unlock_slowpath+0x11a/0x1c0 [ 2165.946823] hardirqs last disabled at (90870): [ 2165.946839] [<ffffffffb173e91b>] __mutex_unlock_slowpath+0x5b/0x1c0 [ 2165.946856] softirqs last enabled at (90858): [ 2165.946872] [<ffffffffb174581a>] __do_softirq+0x39a/0x4c6 [ 2165.946887] softirqs last disabled at (90671): [ 2165.946902] [<ffffffffb1066cea>] irq_exit+0xea/0xf0 [ 2165.946916] other info that might help us debug this: [ 2165.946936] Possible unsafe locking scenario: [ 2165.946955] CPU0 [ 2165.946965] ---- [ 2165.946975] lock(&obj->mm.lock); [ 2165.947000] <Interrupt> [ 2165.947010] lock(&obj->mm.lock); [ 2165.947035] *** DEADLOCK *** [ 2165.947054] 2 locks held by kswapd0/62: [ 2165.947067] #0: (shrinker_rwsem){++++..}, at: [<ffffffffb119a20e>] shrink_slab.part.40+0x5e/0x5d0 [ 2165.947120] #1: (&dev->struct_mutex){+.+.+.}, at: [<ffffffffc028954b>] i915_gem_shrinker_lock+0x1b/0x60 [i915] [ 2165.948909] stack backtrace: [ 2165.950650] CPU: 2 PID: 62 Comm: kswapd0 Tainted: G W 4.9.0-rc2+ #2 [ 2165.951587] Hardware name: LENOVO 80MX/Lenovo E31-80, BIOS DCCN34WW(V2.03) 12/01/2015 [ 2165.952484] ffffc90000b5f8c8 ffffffffb137f645 ffff88016c5a2700 ffffffffb25f20a0 [ 2165.953395] ffffc90000b5f918 ffffffffb10bcecd 0000000000000000 ffff880100000001 [ 2165.954305] 0000000000000001 000000000000000a ffff88016c5a2fd0 ffff88016c5a2700 [ 2165.955240] Call Trace: [ 2165.956170] [<ffffffffb137f645>] dump_stack+0x68/0x93 [ 2165.957071] [<ffffffffb10bcecd>] print_usage_bug+0x1dd/0x1f0 [ 2165.957979] [<ffffffffb10bd439>] mark_lock+0x559/0x5c0 [ 2165.958875] [<ffffffffb10bc3f0>] ? print_shortest_lock_dependencies+0x1b0/0x1b0 [ 2165.959829] [<ffffffffb10be04d>] __lock_acquire+0x66d/0x12a0 [ 2165.960729] [<ffffffffb11ef541>] ? __slab_free+0xa1/0x340 [ 2165.961625] [<ffffffffb10dba5d>] ? debug_lockdep_rcu_enabled+0x1d/0x20 [ 2165.962530] [<ffffffffb10bd50f>] ? mark_held_locks+0x6f/0xa0 [ 2165.963457] [<ffffffffb10bf0b0>] lock_acquire+0xf0/0x1f0 [ 2165.964368] [<ffffffffc0289a1f>] ? i915_gem_shrink+0x29f/0x500 [i915] [ 2165.965269] [<ffffffffc0289a1f>] ? i915_gem_shrink+0x29f/0x500 [i915] [ 2165.966150] [<ffffffffb173d837>] mutex_lock_nested+0x77/0x420 [ 2165.967030] [<ffffffffc0289a1f>] ? i915_gem_shrink+0x29f/0x500 [i915] [ 2165.967952] [<ffffffffc027c7a1>] ? __i915_gem_object_put_pages.part.58+0x161/0x1b0 [i915] [ 2165.968835] [<ffffffffc0289a1f>] i915_gem_shrink+0x29f/0x500 [i915] [ 2165.969712] [<ffffffffc0289e40>] i915_gem_shrinker_scan+0x70/0xb0 [i915] [ 2165.970591] [<ffffffffb119a3ae>] shrink_slab.part.40+0x1fe/0x5d0 [ 2165.971504] [<ffffffffb119f19c>] shrink_node+0x22c/0x320 [ 2165.972371] [<ffffffffb11a05fb>] kswapd+0x38b/0x9b0 [ 2165.973238] [<ffffffffb11a0270>] ? mem_cgroup_shrink_node+0x330/0x330 [ 2165.974068] [<ffffffffb108630f>] kthread+0xff/0x120 [ 2165.974929] [<ffffffffb1086210>] ? kthread_park+0x60/0x60 [ 2165.975847] [<ffffffffb1742d57>] ret_from_fork+0x27/0x40 Reported-by:
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