答复: [外部邮件] Re: [PATCH][v2] x86/process: Return early if TIF_IO_BITMAP is set but no IO bitmap is assigned

From: Li,Rongqing

Date: Fri Jun 12 2026 - 23:01:39 EST


> On 6/11/2026 10:49 PM, lirongqing wrote:
> > From: Li RongQing <lirongqing@xxxxxxxxx>
> >
> > Outside the IOPL emulation path, the IO bitmap is always expected to
> > be allocated when TIF_IO_BITMAP is set. The paranoid WARN_ON_ONCE()
> > handles the case where the flag and the pointer got out of sync.
> > In this rare scenario, return early instead of continuing and
> > dereferencing a NULL pointer.
> >
> > [Sohil Mehta: rephrased commit message]
> >
>
> Never add handler comments for others. Such comments are only expected
> to be added when someone who is handling your patch modifies it but keeps
> the original authorship. You shouldn't add handler comments when you are
> changing the patch as an author yourself.
>

Ok, I will remove it in next version

[Li,Rongqing]