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Message-ID: <7b36e5d1-e936-41af-aa2b-9b0cd102f341@paulmck-laptop>
Date: Thu, 7 Nov 2024 06:01:15 -0800
From: "Paul E. McKenney" <paulmck@...nel.org>
To: Oliver Sang <oliver.sang@...el.com>
Cc: oe-lkp@...ts.linux.dev, lkp@...el.com,
Frederic Weisbecker <frederic@...nel.org>,
linux-kernel@...r.kernel.org
Subject: Re: [paulmckrcu:dev.2024.11.01a] [rcutorture] 622baf5d79:
WARNING:at_kernel/rcu/rcutorture.c:#rcutorture_one_extend_check[rcutorture]
On Thu, Nov 07, 2024 at 02:28:27PM +0800, Oliver Sang wrote:
> hi, Paul,
>
> On Wed, Nov 06, 2024 at 12:07:37PM -0800, Paul E. McKenney wrote:
> > On Tue, Nov 05, 2024 at 01:00:53PM +0800, kernel test robot wrote:
> > >
> > >
> > > Hello,
> > >
> > > kernel test robot noticed "WARNING:at_kernel/rcu/rcutorture.c:#rcutorture_one_extend_check[rcutorture]" on:
> > >
> > > commit: 622baf5d79169496973d50fc43636469e6af02b7 ("rcutorture: Make rcutorture_one_extend() check reader state")
> > > https://github.com/paulmckrcu/linux dev.2024.11.01a
> >
> > This is an old commit that failed to handle any torture_type other than
> > "rcu", including the "srcu" that you tested with. It has since been
> > replaced by a series of newer commits fixing this and other bugs, with
> > the current version here:
> >
> > c815d319a933 ("rcutorture: Make rcutorture_one_extend() check reader state")
> >
> > Does this one work for you?
>
> yes, this one works. issue gone when we run same test case up to 20 times.
>
> d5e74d8e46e8e45c 622baf5d79169496973d50fc436 c815d319a9331530032be3df69c
> ---------------- --------------------------- ---------------------------
> fail:runs %reproduction fail:runs %reproduction fail:runs
> | | | | |
> :6 100% 6:6 0% :20 dmesg.EIP:rcutorture_one_extend_check
> :6 100% 6:6 0% :20 dmesg.WARNING:at_kernel/rcu/rcutorture.c:#rcutorture_one_extend_check[rcutorture]
Again, thank you! Would you like me to apply your Tested-by to the
resulting commit?
Thanx, Paul
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