Re: [paulmckrcu:dev.2024.11.01a] [rcutorture] 622baf5d79: WARNING:at_kernel/rcu/rcutorture.c:#rcutorture_one_extend_check[rcutorture]

[Paul E. McKenney]

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