From: "Paul E. McKenney" <paulmck@kernel.org>
To: Willy Tarreau <w@1wt.eu>
Cc: Ammar Faizi <ammarfaizi2@gnuweeb.org>,
linux-kernel@vger.kernel.org, Shuah Khan <shuah@kernel.org>,
linux-kselftest@vger.kernel.org
Subject: Re: [PATCH 0/2] selftests/nolibc: small simplification of test development phase
Date: Mon, 23 Jan 2023 11:25:40 -0800 [thread overview]
Message-ID: <20230123192540.GZ2948950@paulmck-ThinkPad-P17-Gen-1> (raw)
In-Reply-To: <20230123191250.GD13172@1wt.eu>
On Mon, Jan 23, 2023 at 08:12:50PM +0100, Willy Tarreau wrote:
> On Mon, Jan 23, 2023 at 09:40:03AM -0800, Paul E. McKenney wrote:
> > Except that when I install Ubuntu 20.04's version, I get this:
> >
> > ------------------------------------------------------------------------
> >
> > $ sudo make run-user
> > MKDIR sysroot/x86/include
> > make[1]: Entering directory '/home/git/linux-rcu/tools/include/nolibc'
> > make[2]: Entering directory '/home/git/linux-rcu'
> > make[2]: Leaving directory '/home/git/linux-rcu'
> > make[2]: Entering directory '/home/git/linux-rcu'
> > INSTALL /home/git/linux-rcu/tools/testing/selftests/nolibc/sysroot/sysroot/include
> > make[2]: Leaving directory '/home/git/linux-rcu'
> > make[1]: Leaving directory '/home/git/linux-rcu/tools/include/nolibc'
> > CC nolibc-test
> > 32 gettimeofday_null = -1 EFAULT [FAIL]
> > See all results in /home/git/linux-rcu/tools/testing/selftests/nolibc/run.out
> >
> > ------------------------------------------------------------------------
> >
> > I have attached run.out.
> >
> > In contrast, with my hand-built qemu-x86_64, all tests passed.
> >
> > This might be just a version-related bug, but figured I should let you
> > guys know.
>
> Interesting. Maybe something differs in the way it passes expectedly
> invalid pointers to some syscalls. Keep in mind that it's using your
> local kernel also, that could make a difference. I'm not that much keen
> on trying to investigate that one to be honest, given that this user
> mode is really meant to ease the life of test developers like Ammar
> and myself who just want to focus on the correctness of the test they're
> adding and not that much on the validity of the test itself in this
> context. I suggest we keep this one in mind without putting too much
> effort on it for now.
Indeed, it is easy for me to remove qemu-user and re-install my
hand-built version. In fact, I just now did this and verified that
everything now passes. ;-)
Thanx, Paul
next prev parent reply other threads:[~2023-01-23 19:25 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-21 8:53 Willy Tarreau
2023-01-21 8:53 ` [PATCH 1/2] selftests/nolibc: support "x86_64" for arch name Willy Tarreau
2023-01-21 8:53 ` [PATCH 2/2] selftests/nolibc: add a "run-user" target to test the program in user land Willy Tarreau
2023-01-21 20:00 ` [PATCH 0/2] selftests/nolibc: small simplification of test development phase Paul E. McKenney
2023-01-21 21:34 ` Willy Tarreau
2023-01-23 16:47 ` Paul E. McKenney
2023-01-23 17:17 ` Willy Tarreau
2023-01-23 17:34 ` Paul E. McKenney
2023-01-23 16:57 ` Ammar Faizi
2023-01-23 17:09 ` Paul E. McKenney
2023-01-23 17:20 ` Willy Tarreau
2023-01-23 17:31 ` Ammar Faizi
2023-01-23 17:37 ` Willy Tarreau
2023-01-23 17:40 ` Ammar Faizi
2023-01-23 17:40 ` Paul E. McKenney
2023-01-23 19:01 ` Ammar Faizi
2023-01-23 19:12 ` Paul E. McKenney
2023-01-23 19:12 ` Willy Tarreau
2023-01-23 19:25 ` Paul E. McKenney [this message]
2023-01-23 17:34 ` Ammar Faizi
2023-01-23 17:52 ` Paul E. McKenney
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