linux-kernel - Re: [paulmckrcu:dev.2024.11.01a] [rcutorture] 622baf5d79: WARNING:at_kernel/rcu/rcutorture.c:#rcutorture_one_extend

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Message-ID: <0e7a3c71-d62f-46d9-95c6-ab908e35c275@paulmck-laptop>
Date: Thu, 7 Nov 2024 06:17:15 -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 10:06:35PM +0800, Oliver Sang wrote:
> hi, Paul,
> 
> On Thu, Nov 07, 2024 at 06:01:15AM -0800, Paul E. McKenney wrote:
> > 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?
> 
> sure! thanks
> 
> Tested-by: kernel test robot <oliver.sang@...el.com>

Thank you again, and I will apply this on my next rebase.

							Thanx, Paul