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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] igt@kms_cursor_legacy@all-pipes-single-move - Incomplete - INFO: task kswapd0:52 blocked for more than 60 seconds"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104479#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] igt@kms_cursor_legacy@all-pipes-single-move - Incomplete - INFO: task kswapd0:52 blocked for more than 60 seconds"
href="https://bugs.freedesktop.org/show_bug.cgi?id=104479">bug 104479</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>(In reply to Marta Löfstedt from <a href="show_bug.cgi?id=104479#c0">comment #0</a>)
<span class="quote">> <a href="https://intel-gfx-ci.01.org/tree/drm-tip/IGT_4109/shard-glkb6/">https://intel-gfx-ci.01.org/tree/drm-tip/IGT_4109/shard-glkb6/</a>
> igt@<a href="mailto:kms_cursor_legacy@all-pipes-single-move.html">kms_cursor_legacy@all-pipes-single-move.html</a>
>
> <7>[ 115.915180] [drm:gen9_set_dc_state [i915]] Setting DC state from 00 to
> 01
> <3>[ 123.918946] INFO: task kswapd0:52 blocked for more than 60 seconds.
> <3>[ 123.918960] Tainted: G U
> 4.15.0-rc6-CI-CI_DRM_3589+ #1
> <3>[ 123.918963] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
> disables this message.
> <6>[ 123.918967] kswapd0 D 0 52 2 0x80000000
> <4>[ 123.918973] Call Trace:
> <4>[ 123.918985] ? __schedule+0x3c3/0xaf0
> <4>[ 123.918994] schedule+0x37/0x90
> <4>[ 123.919000] io_schedule+0xd/0x30
> <4>[ 123.919005] __lock_page+0x107/0x130
> <4>[ 123.919011] ? add_to_page_cache_lru+0xc0/0xc0
> <4>[ 123.919019] deferred_split_scan+0x25a/0x2b0
> <4>[ 123.919027] shrink_slab.part.17+0x201/0x5d0
> <4>[ 123.919041] shrink_node+0x2fd/0x310
> <4>[ 123.919050] kswapd+0x31c/0x910
> <4>[ 123.919064] kthread+0xfb/0x130
> <4>[ 123.919067] ? mem_cgroup_shrink_node+0x300/0x300
> <4>[ 123.919070] ? _kthread_create_on_node+0x30/0x30
> <4>[ 123.919075] ret_from_fork+0x24/0x30</span >
...
<span class="quote">> Since igt@gem_tiled_swapping@non-threaded was run before this test, maybe
> this is related to <a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI] igt@gem_tiled_swapping@non-threaded - cause incompletes on following tests"
href="show_bug.cgi?id=104218">bug 104218</a>.</span >
That seems very likely, the same waiting for deferred_split_scan::lock_page
with nothing on the other cpus that would appear to be keeping a page locked.</pre>
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