Re: ptrace single-stepping change breaks Wine

[Kari Hurtta]

[ Reading just long long thread (actually from
gmane.comp.emulators.wine.devel) ]

Linus Torvalds :
> -
> -
> /*
> -
>  * Was the TF flag set by a debugger? If so, clear it now,
> -
>  * so that register information is correct.
> -
>  */
> -
> if (tsk->ptrace & PT_DTRACE) {
> -
> 	regs->eflags &= ~TF_MASK;
> -
> 	tsk->ptrace &= ~PT_DTRACE;

=========================
> -
> 	if (!tsk->ptrace & PT_DTRACE)

=======================
> -
> 		goto clear_TF;
> -
> }
> }

Perhaps, I'm stupid.

But is there something strange on that test of tsk->ptrace variable?

Before that PT_DTRACE was cleared from that same tsk->ptrace variable.

/ Kari Hurtta