[Bug 46472] Linux kernel 4.19 breaks startup of BO2 due to change in PTRACE_POKEUSER hw breakpoint behavior

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=46472

--- Comment #3 from tjb <troyb at us.ibm.com> ---
(In reply to Fabian Maurer from comment #1)
> AFAIK the linux kernel shouldn't break userland programs. Reverting the
> kernel commit fixed the issue? If so, did you already ask on the linux
> mailinglist?

According to the commit, which I attached, this "corrected" behavior in
PTRACE_POKUSER hardware breakpoint functions.  I have no idea what this
function is or what the "correct" behavior is supposed to be, so I would not
even know what to ask on the kernel mailing list, all I can say is the change
causes a program to bomb on wine which used to work.  It needs to be addressed
by an expert, i.e. a wine dev who used these commands and understands that this
kernel patch is either broke, or the wine code is relying on unspecified
behavior and needs to be updated.

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