From: Joel Fernandes <joel@joelfernandes.org>
To: "Paul E. McKenney" <paulmck@kernel.org>
Cc: rcu@vger.kernel.org
Subject: Re: [BUG] TREE04 hang on 6.5.y stable: Writer stall state RTWS_COND_SYNC_FULL
Date: Sat, 16 Sep 2023 01:09:48 +0000 [thread overview]
Message-ID: <20230916010948.GA60414@google.com> (raw)
In-Reply-To: <208d035b-a411-40d0-bb5e-59deb6a785e6@paulmck-laptop>
On Thu, Sep 07, 2023 at 07:34:44AM -0700, Paul E. McKenney wrote:
> On Thu, Sep 07, 2023 at 09:17:15AM -0400, Joel Fernandes wrote:
> > Hi,
> > Just started seeing this on 6.5 stable. It is new and first occurrence:
> >
> > TREE04 no success message, 234 successful version messages
> > [033mWARNING: [mTREE04 GP HANG at 14 torture stat 2
> > [ 38.371120] ??? Writer stall state RTWS_COND_SYNC_FULL(10) g1253
> > f0x0 ->state 0x2 cpu 6
> > [ 38.388342] Call Trace:
> > [ 53.741039] ??? Writer stall state RTWS_COND_SYNC_FULL(10) g3637
> > f0x2 ->state 0x2 cpu 6
> > [ 69.093462] ??? Writer stall state RTWS_COND_SYNC_FULL(10) g5501
> > f0x0 ->state 0x2 cpu 6
> > [ 84.450028] ??? Writer stall state RTWS_COND_SYNC_FULL(10) g10505
> > f0x0 ->state 0x2 cpu 6
> > [ 99.815871] ??? Writer stall state RTWS_COND_SYNC_FULL(10) g13781
> > f0x0 ->state 0x2 cpu 6
> > [ 115.166476] ??? Writer stall state RTWS_COND_SYNC_FULL(10) g16544
> > f0x0 ->state 0x2 cpu 6
> > [ 130.550116] ??? Writer stall state RTWS_COND_SYNC_FULL(10) g18941
> > f0x0 ->state 0x2 cpu 6
> > [..]
> >
> > All logs:
> > http://box.joelfernandes.org:9080/job/rcutorture_stable/job/linux-6.5.y/17/artifact/tools/testing/selftests/rcutorture/res/2023.09.07-04.10.25/TREE04/
>
> Huh. Does this happen for you in v6.5 mainline?
>
> Both the code under test (full-state polled grace periods) and the
> rcutorture test code are fairly new, so there is some reason for general
> suspicion. ;-)
I happened to hit this again but this time on 6.1 stable and TREE05:
Here are some logs:
http://box.joelfernandes.org:9080/job/rcutorture_stable/job/linux-6.1.y/139/artifact/tools/testing/selftests/rcutorture/res/2023.09.15-04.02.48/TREE05/
I am planning to look closer soon. thanks,
- Joel
prev parent reply other threads:[~2023-09-16 1:10 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-07 13:17 [BUG] TREE04 hang on 6.5.y stable: Writer stall state RTWS_COND_SYNC_FULL Joel Fernandes
2023-09-07 14:34 ` Paul E. McKenney
2023-09-07 20:03 ` Joel Fernandes
2023-09-08 0:51 ` Joel Fernandes
2023-09-08 8:27 ` Paul E. McKenney
2023-09-08 11:41 ` Frederic Weisbecker
2023-09-08 13:32 ` Joel Fernandes
2023-09-08 10:28 ` Zhouyi Zhou
2023-09-08 23:33 ` Zhouyi Zhou
2023-09-09 0:10 ` Zhouyi Zhou
2023-09-16 1:09 ` Joel Fernandes [this message]
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