Re: [v3.13][v3.14][Regression] kthread: make kthread_create() killable

From: Oleg Nesterov
Date: Tue Mar 18 2014 - 13:51:23 EST

On 03/17, One Thousand Gnomes wrote:
> > and b) permits userspace to produce surprising results in the kernel,
> > which I suspect is what we're seeing here.
> There is enough information for kernel side code to decide whether a
> signal came from kernel or userspace.

Not really. SIGKILL can come without siginfo. Other signals too, but
SIGKILL especially.

> Then again - it's not clear that it
> should ever have to.

Yes, agreed.


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