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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Everything using GPU gets stuck after running+killing parallel Media loads (after running 3D benchmarks)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110848#c7">Comment # 7</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Everything using GPU gets stuck after running+killing parallel Media loads (after running 3D benchmarks)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110848">bug 110848</a>
from <span class="vcard"><a class="email" href="mailto:eero.t.tamminen@intel.com" title="Eero Tamminen <eero.t.tamminen@intel.com>"> <span class="fn">Eero Tamminen</span></a>
</span></b>
<pre>I've now verified that every time this freeze happens, these are stuck:
-----------------------------------------------
Name: khugepaged
State: D (disk sleep)
Pid: 38
[<0>] kthread+0x113/0x130
[<0>] ret_from_fork+0x35/0x40
--
Name: kworker/u8:2+i915
State: D (disk sleep)
Pid: 7911
[<0>] __i915_gem_free_work+0x5f/0x90 [i915]
[<0>] process_one_work+0x1e9/0x410
[<0>] worker_thread+0x2d/0x3d0
[<0>] kthread+0x113/0x130
[<0>] ret_from_fork+0x35/0x40
-----------------------------------------------
in addition to the stuck transcoding tasks:
-----------------------------------------------
...
Name: sample_multi_tr
State: D (disk sleep)
Pid: 20118
[<0>] __fput+0xae/0x200
[<0>] task_work_run+0x84/0xa0
[<0>] do_exit+0x308/0xba0
[<0>] do_group_exit+0x33/0xa0
[<0>] get_signal+0x121/0x910
[<0>] do_signal+0x30/0x6b0
[<0>] exit_to_usermode_loop+0x96/0xb0
[<0>] do_syscall_64+0x103/0x130
[<0>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
--
Name: sample_multi_tr
State: D (disk sleep)
Pid: 20221
[<0>] chrdev_open+0xa3/0x1b0
[<0>] do_dentry_open+0x1c4/0x380
[<0>] path_openat+0x564/0x11f0
[<0>] path_openat+0x564/0x11f0
[<0>] do_filp_open+0x9b/0x110
[<0>] do_sys_open+0x1bd/0x260
[<0>] do_syscall_64+0x4f/0x130
[<0>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
...
-----------------------------------------------
Above is from last evening drm-tip git build. For some reason on ClearLinux
(<a href="show_bug.cgi?id=110848#c5">comment 5</a>) ffmpeg git build gets stuck, and on Ubuntu 18.04 (this comment)
it's the MSDK git build test app. In both setups, kernel & Media stack are
using same binaries. Main difference between these setups are:
- HW is supposed to be identical, but they are separate machines
- Weston vs. X server running in background (which aren't used in Media tests)
- optimizations in ClearLinux libc
I think the differences in freezing app are just due to some differences in
timings.</pre>
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