linux-kernel - Re: [PATCH] selftests/seccomp: Handle namespace failures gracefully

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Message-ID: <20190412194409.GD25793@cisco>
Date:   Fri, 12 Apr 2019 13:44:09 -0600
From:   Tycho Andersen <tycho@...ho.ws>
To:     shuah <shuah@...nel.org>
Cc:     Kees Cook <keescook@...omium.org>, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] selftests/seccomp: Handle namespace failures gracefully

On Fri, Apr 12, 2019 at 11:07:11AM -0600, shuah wrote:
> On 4/12/19 9:25 AM, Tycho Andersen wrote:
> > On Thu, Apr 11, 2019 at 04:56:31PM -0700, Kees Cook wrote:
> > > When running without USERNS or PIDNS the seccomp test would hang since
> > > it was waiting forever for the child to trigger the user notification
> > > since it seems the glibc() abort handler makes a call to getpid(),
> > > which would trap again. This changes the getpid filter to getppid, and
> > > makes sure ASSERTs execute to stop from spawning the listener.
> > > 
> > > Reported-by: Shuah Khan <shuah@...nel.org>
> > > Fixes: 6a21cc50f0c7 ("seccomp: add a return code to trap to userspace")
> > > Signed-off-by: Kees Cook <keescook@...omium.org>
> > 
> > Sorry for the delay, thanks for looking at this!
> > 
> > Reviewed-by: Tycho Andersen <tycho@...ho.ws>
> > 
> 
> Thanks both. Should it go into stables. I will pull this and
> add stable if that is appropriate.

Yes, for 5.0+ that sounds good.

Thanks!

Tycho