Re: [tip:x86/urgent] x86-64, modify_ldt: Ban 16-bit segments on 64-bit kernels

[H. Peter Anvin]

I would think any sensible application with 16-bit segments would be using sigaltstack.  Does anyone know what Wine does?

On April 12, 2014 6:29:11 PM PDT, Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote:
>On Sat, Apr 12, 2014 at 6:25 PM, Andy Lutomirski <luto@xxxxxxxxxxxxxx>
>wrote:
>> On Sat, Apr 12, 2014 at 5:03 PM, H. Peter Anvin <hpa@xxxxxxxxx>
>wrote:
>>> A signal arriving while in the user space trampoline could seriously
>>> complicate life.
>>
>> Agreed.
>
>Maybe I don't agree.  Have signals ever worked sensibly when delivered
>to a task running on an unexpected stack or code segment?
>
>--Andy

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