Re: [BUG] missing return thunk: __ret+0x5/0x7e-__ret+0x0/0x7e: e9 f6 ff ff ff

Paul E. McKenney
2023-08-16T18:55:08Z

On Wed, Aug 16, 2023 at 08:17:20PM +0200, Borislav Petkov wrote:
> Hey Paul,
>
> On Wed, Aug 16, 2023 at 10:54:09AM -0700, Paul E. McKenney wrote:
> > I hit the splat at the end of this message in recent mainline, and has
> > appeared some time since v6.5-rc1. Should I be worried?
>
> does it go away if you try the latest tip:x86/urgent branch?

That is plausible, given that bisection has narrowed things down to
somewhere between v6.5-rc5 and v6.5-rc6. And it is quite conveniently
currently on a bad commit. Sometimes you get lucky. ;-)

So pulling in those commits from -tip, currently headed by this one:

d80c3c9de067 ("x86/srso: Explain the untraining sequences a bit more")

Then merging them with the current bad commit gets me a successful
run. Thank you!!!

Thanx, Paul