From: Oleg Nesterov <oleg@redhat.com>
To: Wei Fu <fuweid89@gmail.com>
Cc: Sudhanva.Huruli@microsoft.com, akpm@linux-foundation.org,
apais@linux.microsoft.com, axboe@kernel.dk, boqun.feng@gmail.com,
brauner@kernel.org, ebiederm@xmission.com, frederic@kernel.org,
j.granados@samsung.com, jiangshanlai@gmail.com,
joel@joelfernandes.org, josh@joshtriplett.org,
linux-kernel@vger.kernel.org, mathieu.desnoyers@efficios.com,
michael.christie@oracle.com, mjguzik@gmail.com,
neeraj.upadhyay@kernel.org, paulmck@kernel.org,
qiang.zhang1211@gmail.com, rachelmenge@linux.microsoft.com,
rcu@vger.kernel.org, rostedt@goodmis.org, weifu@microsoft.com
Subject: Re: [RCU] zombie task hung in synchronize_rcu_expedited
Date: Fri, 7 Jun 2024 08:25:31 +0200 [thread overview]
Message-ID: <20240607062531.GA30954@redhat.com> (raw)
In-Reply-To: <20240607030219.2990306-1-fuweid89@gmail.com>
Thanks for this info,
On 06/07, Wei Fu wrote:
>
> All the kernels disable CONFIG_PREEMPT and PREEMPT_RCU.
Ah, this can explain both soft-lockup and synchronize_rcu() hang. If my theory
is correct.
Can you try the patch I sent?
Oleg.
next prev parent reply other threads:[~2024-06-07 6:27 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-05 23:42 [RCU] zombie task hung in synchronize_rcu_expedited Rachel Menge
2024-06-06 11:10 ` Oleg Nesterov
2024-06-06 15:45 ` Wei Fu
2024-06-06 17:28 ` Oleg Nesterov
2024-06-07 3:02 ` Wei Fu
2024-06-07 6:25 ` Oleg Nesterov [this message]
2024-06-07 15:04 ` Wei Fu
2024-06-07 21:22 ` Oleg Nesterov
2024-06-08 12:42 ` Oleg Nesterov
2024-06-10 0:07 ` Wei Fu
2024-06-08 12:06 ` [PATCH] zap_pid_ns_processes: clear TIF_NOTIFY_SIGNAL along with TIF_SIGPENDING Oleg Nesterov
2024-06-08 17:00 ` Boqun Feng
2024-06-09 14:12 ` Wei Fu
2024-06-12 16:57 ` Jens Axboe
2024-06-13 12:40 ` Eric W. Biederman
2024-06-13 14:02 ` Wei Fu
2024-06-13 14:49 ` Oleg Nesterov
2024-06-13 15:30 ` Oleg Nesterov
2024-06-08 15:48 ` [PATCH] zap_pid_ns_processes: don't send SIGKILL to sub-threads Oleg Nesterov
2024-06-13 13:01 ` Eric W. Biederman
2024-06-13 15:00 ` Oleg Nesterov
2024-06-13 16:23 ` Eric W. Biederman
2024-07-05 16:08 ` Oleg Nesterov
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