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Date:   Thu, 17 Jan 2019 09:27:03 -0700
From:   Tycho Andersen <>
To:     Kees Cook <>
Cc:     shuah <>, James Morris <>,
        Linus Torvalds <>,
        Linux Kernel Mailing List <>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
Subject: Re: Linux 5.0-rc2 seccomp_bpf user_notification_basic test hangs

On Thu, Jan 17, 2019 at 08:12:50AM -0800, Kees Cook wrote:
> On Wed, Jan 16, 2019 at 5:26 PM shuah <> wrote:
> > I am running Linux 5.0-rc2 and not an older kernel.
> Weird. I couldn't reproduce this on 5.0-rc2, but I did see it on a
> kernel without seccomp user_notif. Does the patch I sent fix it for
> you? (And if so, can you take it in your tree?)

I can reproduce it; you have to run it as non-root. I think your patch
is necessary to get it to at least fail. The question is: what should
we do about these tests that require real root? Skip them if we're not
real-root, I guess?


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