From: Andrew Morton <akpm@linux-foundation.org>
To: Petr Mladek <pmladek@suse.com>
Cc: Martin Liu <liumartin@google.com>,
Oleg Nesterov <oleg@redhat.com>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Tejun Heo <tj@kernel.org>,
minchan@google.com, davidchao@google.com, jenhaochen@google.com,
clang-built-linux@googlegroups.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/3] kthread: Prevent deadlock when kthread_mod_delayed_work() races with kthread_cancel_delayed_work_sync()
Date: Thu, 10 Jun 2021 14:30:30 -0700 [thread overview]
Message-ID: <20210610143030.f599946ec11e1eccde6af4f0@linux-foundation.org> (raw)
In-Reply-To: <20210610133051.15337-3-pmladek@suse.com>
On Thu, 10 Jun 2021 15:30:50 +0200 Petr Mladek <pmladek@suse.com> wrote:
> The system might hang with the following backtrace:
Well that's not good.
> Fixes: 9a6b06c8d9a220860468a ("kthread: allow to modify delayed kthread work")
> Reported-by: Martin Liu <liumartin@google.com>
> Signed-off-by: Petr Mladek <pmladek@suse.com>
Was a -stable backport considered?
next prev parent reply other threads:[~2021-06-10 21:30 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-10 13:30 [PATCH 0/3] kthread_worker: Fix race between kthread_mod_delayed_work() and kthread_cancel_delayed_work_sync() Petr Mladek
2021-06-10 13:30 ` [PATCH 1/3] kthread_worker: Split code for canceling the delayed work timer Petr Mladek
2021-06-10 13:30 ` [PATCH 2/3] kthread: Prevent deadlock when kthread_mod_delayed_work() races with kthread_cancel_delayed_work_sync() Petr Mladek
2021-06-10 21:30 ` Andrew Morton [this message]
2021-06-11 7:16 ` Petr Mladek
2021-06-11 20:41 ` Andrew Morton
2021-06-14 7:10 ` Petr Mladek
2021-06-10 13:30 ` [PATCH 3/3] kthread_worker: Fix return value " Petr Mladek
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