[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 #30 from Anthony Jagers <noonetinone at gmail.com> ---
Update, I have received a flurry of emails since I CC'ed the five maintainers
of the source file.

I'll just quote what two unnamed individuals have wrote.

> there's a post with simple test code showing what the fix aimed for:
>   https://lore.kernel.org/lkml/tip-9b3579fc6c6ac45502de1fa9a1fdf873805c2157@git.kernel.org/
>
> it might help narow down the potential issue in set_thread_context

Someone with access to the app will need to investigate what it's doing,
specifically how it's trying to set the debug registers and why the
values that it's setting are causing different behavior with that kernel
change. Getting an strace of the wineserver process would probably help,
or else adding printfs to all the PTRACE_PEEKUSER/POKEUSER calls in
server/ptrace.c.

_______________________________________________________________________________

Well that's something.

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