[Bug 99236] System (seems to) completely freezes when interacting with java swing applications.

[Bug 99236] System (seems to) completely freezes when interacting with java swing applications.

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

            Bug ID: 99236
           Summary: System (seems to) completely freezes when interacting
                    with java swing applications.
           Product: DRI
           Version: DRI git
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: tmp6154@yandex.ru

I'm not completely certain whether it's related to AMD GPU driver or not, but
it's rather strange issue that I can get stable reproduce for.

I'm running a Gentoo system with AMD Radeon RX 480, with git AMD GPU driver and
git version of mesa. When interacting with scrollable JTextAreas in Java Swing
application, I get a stably reproducible issue (100%). Since this affects
multiple java swing applications (e.g. eclipse), including the program I'm
developing at the time, I can attempt to put together a reproducer java app, if
that's needed.

For first 2-3 seconds, mouse cursor moves jittery, then it stops to move at all
and display keeps displaying same frozen state. Nothing appears to work,
including Ctrl+Alt+F1, etc. But despite machine looking completely locked up,
in fact, it's not. I can ssh into it and issue reboot command. During that
time, display doesn't shows any signs of life until the moment when machine
reboots (but I can hear KDE shutdown sound).

This occurs only under JRE8, both icedtea and oracle variants. Under JRE7 issue
doesn't trigger. If memory serves, JRE8 brought improvements to
hardware-accelerated GUI rendering. This is especially strange, since Swing GUI
framework renders it's own GUI widgets.

Considering that even Ctrl+Alt+F1 doesn't work, I suppose problem happens on
kernel level, possibly in AMD GPU driver.

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[Bug 99236] System (seems to) completely freeze when interacting with java swing applications.

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

Vitaly Ostrosablin <tmp6154@yandex.ru> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|System (seems to)           |System (seems to)
                   |completely freezes when     |completely freeze when
                   |interacting with java swing |interacting with java swing
                   |applications.               |applications.

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[Bug 99236] System (seems to) completely freeze when interacting with java swing applications.

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

Vitaly Ostrosablin <tmp6154@yandex.ru> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Hardware|x86 (IA32)                  |x86-64 (AMD64)

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[Bug 99236] System (seems to) completely freeze when interacting with java swing applications.

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

--- Comment #1 from Alex Deucher <alexdeucher@gmail.com> ---
Please attach your xorg log and dmesg output.

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[Bug 99236] System (seems to) completely freeze when interacting with java swing applications.

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

--- Comment #2 from Vitaly Ostrosablin <tmp6154@yandex.ru> ---
Created attachment 128721
  --> https://bugs.freedesktop.org/attachment.cgi?id=128721&action=edit
dmesg output from faulty session

Here's my dmesg. From these lines:

[  675.891897] amdgpu 0000:01:00.0: GPU fault detected: 147 0x00004802
[  675.891899] amdgpu 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR  
0x00000000
[  675.891900] amdgpu 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_STATUS
0x02048002
[  675.891902] VM fault (0x02, vmid 1) at page 0, read from 'TC4' (0x54433400)
(72)
[  675.892003] amdgpu 0000:01:00.0: GPU fault detected: 147 0x00004802
[  675.892004] amdgpu 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_ADDR  
0x00000000
[  675.892006] amdgpu 0000:01:00.0:   VM_CONTEXT1_PROTECTION_FAULT_STATUS
0x02048002

It's obvious that something went terribly wrong inside AMD GPU.

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[Bug 99236] System (seems to) completely freeze when interacting with java swing applications.

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

--- Comment #3 from Vitaly Ostrosablin <tmp6154@yandex.ru> ---
Created attachment 128722
  --> https://bugs.freedesktop.org/attachment.cgi?id=128722&action=edit
Xorg.0.log from faulty session

This is Xorg log. It doesn't seem that X noticed the fault at all. Moreover,
with `ps -e` over ssh I can see X process and all other GUI programs still
running just fine. So it seems that only GPU driver has failed, other stuff
doesn't seem to be affected.

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[Bug 99236] System (seems to) completely freeze when interacting with java swing applications.

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

--- Comment #4 from Vitaly Ostrosablin <tmp6154@yandex.ru> ---
Created attachment 128723
  --> https://bugs.freedesktop.org/attachment.cgi?id=128723&action=edit
Java Swing reproducer application

Here's Java sources of a reproducer mini-application for the issue. Running it
and pressing the button results for me in AMD GPU fault, similar to ones I've
already attached logs for. Works in 100% cases (2/2) if run under JRE8.

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[Bug 99236] System (seems to) completely freeze when interacting with java swing applications.

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|DRM/AMDgpu                  |Drivers/Gallium/radeonsi
            Product|DRI                         |Mesa
         QA Contact|                            |dri-devel@lists.freedesktop
                   |                            |.org
            Version|DRI git                     |unspecified

--- Comment #5 from Michel Dänzer <michel@daenzer.net> ---
It's most likely a Mesa driver issue.

Can you try running Xephyr something like this:

 GALLIUM_DDEBUG="pipelined 2000" Xephyr :99 -glamor -screen 1024x768

and then run the reproducer app with DISPLAY=:99 . After the hang, a file
should appear in ~/ddebug_dumps/. Please attach that file here.

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[Bug 99236] System (seems to) completely freeze when interacting with java swing applications.

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

--- Comment #6 from Vitaly Ostrosablin <tmp6154@yandex.ru> ---
Yes, no problem. However, my XOrg was compiled without Xephyr, so I rebuilt it.
Unfortunately, I've decided to update mesa to latest commit as well, but it
seems that one of recent commits breaks everything (I get an unusable desktop
which looks white and can see gray outlines of KDE taskbar, mouse cursor and
login password box cursor). So, I had to temporarily revert to 13.0.3 mesa. But
there some useful info. First, on 13.0.3 I cannot reproduce fault with
reproducer app. Second, reproducer app looks same under 13.0.3 both on Java 7
and Java 8. I found it strange that under Java 7 swing app looks like it should
(Metal look & feel) and under Java 8 it looked different (white buttons instead
of default metallic). But it appears that this was just a rendering artefact.

I will try to get back to working mesa commit and reproduce the problem with
Xephyr now.

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[Bug 99236] System (seems to) completely freeze when interacting with java swing applications.

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

--- Comment #7 from Vitaly Ostrosablin <tmp6154@yandex.ru> ---
Created attachment 128804
  --> https://bugs.freedesktop.org/attachment.cgi?id=128804&action=edit
Comparison of reproducer app under java 8 and java 7 with git mesa

Checked out two days old revision of mesa. Attached screenshot of what I meant
about reproducer app.

Will try running it in Xephyr.

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[Bug 99236] System (seems to) completely freeze when interacting with java swing applications.

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

--- Comment #8 from Vitaly Ostrosablin <tmp6154@yandex.ru> ---
Attempted to run reproducer app in Xephyr. It appears exactly like on host with
Java 8 in attached screenshot. I.e. with white button. However, clicking the
button just adds the text into textarea, as programmed, while doing this
directly on host's Xorg hangs the system.

I think it's possible that app alone is not enough to reproduce the issue, KDE
and it's window manager might be at play here, too. But it's strange, because
this seems to occur on adding text to JTextArea, which is rendered by Swing and
should be least affected by WM and DE (except for window border, which is
absent in Xephyr, since no WM runs there).

But if that's mesa-only bug, shouldn't Ctrl+Alt+F1 work? Here GPU appears to
have stopped output completely (most likely, fullscreen tty opens, but GPU
shows same picture as on moment of freeze).

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[Bug 99236] System (seems to) completely freeze when interacting with java swing applications.

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

--- Comment #9 from Michel Dänzer <michel@daenzer.net> ---
Any chance you can bisect Mesa?

(In reply to Vitaly Ostrosablin from comment #8)
> But if that's mesa-only bug, shouldn't Ctrl+Alt+F1 work? Here GPU appears to
> have stopped output completely (most likely, fullscreen tty opens, but GPU
> shows same picture as on moment of freeze).

A GPU hang tends to cause the Xorg process to hang as well, which prevents VT
switching from working.

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[Bug 99236] System (seems to) completely freeze when interacting with java swing applications.

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

--- Comment #10 from Vitaly Ostrosablin <tmp6154@yandex.ru> ---
Yes, will try to bisect mesa. Unfortunately, in looks like I'll have to do that
manually, since Gentoo doesn't seem to have bisect tools for portage. So far I
can say following initial info:

1) Bug wasn't introduced at least until November 30, 2016.
2) White button artefact doesn't seem to be related to hang. In Nov 30 commit
button is white, but pressing it doesn't hang the system.
3) On Dec 20, 2016, hang was already introduced.

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[Bug 99236] System (seems to) completely freeze when interacting with java swing applications.

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

--- Comment #11 from Vitaly Ostrosablin <tmp6154@yandex.ru> ---
Further narrowed date range: between Dec 6 and Dec 12.

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[Bug 99236] System (seems to) completely freeze when interacting with java swing applications.

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

--- Comment #12 from Vitaly Ostrosablin <tmp6154@yandex.ru> ---
Looks like it broke on Dec 07. There was a lot of radeonsi-related commits, but
I had difficulty compiling a working mesa out of them. On Dec 6, there was no
bug. No commits on Dec 7 seems to work, they're segfaulting. Then later on Dec
8, mesa can be compiled an started, but issue is already present.

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[Bug 99236] System (seems to) completely freeze when interacting with java swing applications.

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

--- Comment #13 from Ilia Mirkin <imirkin@alum.mit.edu> ---
Vitaly - commit id's please. Dates are largely meaningless - the default date
shown by git has little to do with when the commit made it into a particular
tree, even with mesa's rebase policy.

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[Bug 99236] System (seems to) completely freeze when interacting with java swing applications.

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

--- Comment #14 from Vitaly Ostrosablin <tmp6154@yandex.ru> ---
85a3057f651a1c56348f1af18343d9cc0a5c93f3 used to work fine.

After that, in at most 3 commits to future from this point something was broken
and mesa didn't run (checked on 4c8c13b3568c82e503a10ddcb846b4c96261ec4c).

One of commits further in history I tried was
132b69c4edb824c70c98f8937c63e49b04f3adff, which didn't work as well.

After it, there was a huge batch of radeonsi commits.

c7dc1b010ae581f532240b661cb3d1c82e117e7e is not runnable, too.

bd56de88dfb192310f3432a3c0e0ddc3469c6d55 is runnable (probably, was fixed
somewhere earlier) and java reproducer app hangs system there.

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[Bug 99236] System (seems to) completely freeze when interacting with java swing applications.

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

--- Comment #15 from Michel Dänzer <michel@daenzer.net> ---
For any commits that you can't test, run

 git bisect skip

Eventually, git bisect will either show the commit which introduced the
problem, or the minimal set of candidates.

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[Bug 99236] System (seems to) completely freeze when interacting with java swing applications.

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

--- Comment #16 from Vitaly Ostrosablin <tmp6154@yandex.ru> ---
Have successfully updated to latest mesa. Seems like issue was fixed recently.

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[Bug 99236] System (seems to) completely freeze when interacting with java swing applications.

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https://bugs.freedesktop.org/show_bug.cgi?id=99236

Timothy Arceri <t_arceri@yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #17 from Timothy Arceri <t_arceri@yahoo.com.au> ---
(In reply to Vitaly Ostrosablin from comment #16)
> Have successfully updated to latest mesa. Seems like issue was fixed
> recently.

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