[Bug 39141] New: Freezing completely when adjusting date/time

https://bugs.winehq.org/show_bug.cgi?id=39141

Bug ID: 39141
           Summary: Freezing completely when adjusting date/time
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

I had a script running an ntpdate hourly and meanwhile, I intermittently had
this machine completely seizing up. To the point where only a tap on the reboot
button and/or powering off would work (which is rare in a Linux configuration).

The one element I could point out regarding this seizing up phenomenon was that
it would only occur when running Wine (typically, a game of some sort but not
limited to one individual title; it has happened with Banished, Heroes of the
Storm, Diablo III).

Last night it occured to me to simply remove that ntpdate script to see if that
would aleviate the problem; at first I suspected it was linked to the recent
shift from ASM to C in the Linux kernel but multiple kernel versions have
exhibited this phenomenon so that is unlikely. Again, the only constant seems
to be Wine.

Since removing the ntpdate script, the problem has not shown itself again. I
suspect there may be some issue with changing system date/time while Wine is
running. In particular, I suspect that any minor time adjustment to the past
might cause irregularities that end up causing very tight infinite loops or
something to that effect; since not even the keyboard responded when the
seizing up phenomenon occured.

This happened with multiple versions of time, all of which in the 1.7.4x
series.

[Bug 39141] Freezing completely when adjusting date/time

https://bugs.winehq.org/show_bug.cgi?id=39141

--- Comment #1 from Armin Altorffer  ---
OK, so, the ntpdate script was not at fault. Phenomenon occured just now;
script was no longer part of the equation. So, something else is going on here.
Going back to Linux kernel version 3.19.8. Maybe 4.0 and up are all just broken
for AMD, at a low level. Still, odd that it is limited to just Wine that causes
the issue.

[Bug 39141] Freezing completely when adjusting date/time

https://bugs.winehq.org/show_bug.cgi?id=39141

--- Comment #2 from Armin Altorffer  ---
After installing Linux kernel 3.19.8.ckt5-low latency-x64, I ran a lengthy
stress test; simply running a Windows demoscene demo on loop, using Wine. To
see if the problem would resurface; so far, it has not.

Suggesting indeed that kernel 4.0 and up (all kernels from 4.0 and up have
demonstrated this phenomenon for me) are different in some way that causes Wine
to seize the machine up completely. Still, that seems odd still; since most of
the very low ASM > C changes in the kernel since 4.0 are not in user space and
I would imagine Wine operating purely in user space.

[Bug 39141] Freezing completely when adjusting date/time

https://bugs.winehq.org/show_bug.cgi?id=39141

Armin Altorffer  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #3 from Armin Altorffer  ---
Issue has been determined to be related to something unrelated to Wine.

[Bug 39141] Freezing completely when adjusting date/time

https://bugs.winehq.org/show_bug.cgi?id=39141

Armin Altorffer  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

--- Comment #4 from Armin Altorffer  ---
...