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Mon, 29 Sep 2025 01:48:49 -0700 (PDT) Date: Mon, 29 Sep 2025 11:48:46 +0300 From: Dan Carpenter To: oe-kbuild@lists.linux.dev, Mary Strodl , linux-kernel@vger.kernel.org Cc: lkp@intel.com, oe-kbuild-all@lists.linux.dev, linus.walleij@linaro.org, brgl@bgdev.pl, linux-gpio@vger.kernel.org Subject: Re: [PATCH v2 1/3] gpio: mpsse: use rcu to ensure worker is torn down Message-ID: References: <20250923133304.273529-2-mstrodl@csh.rit.edu> <202509290823.hreUi6Tp-lkp@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202509290823.hreUi6Tp-lkp@intel.com> On Mon, Sep 29, 2025 at 11:46:24AM +0300, Dan Carpenter wrote: > a14b0c5e3b0741 Mary Strodl 2025-09-23 339 /* Make sure list consumers are finished before we tear down */ > a14b0c5e3b0741 Mary Strodl 2025-09-23 340 synchronize_rcu(); > a14b0c5e3b0741 Mary Strodl 2025-09-23 @341 list_for_each_entry(worker, &destructors, destroy) > a14b0c5e3b0741 Mary Strodl 2025-09-23 @342 gpio_mpsse_stop(worker); > > This needs to be list_for_each_entry_save() because gpio_mpsse_stop() s/save/safe/. #CantType regards, dan carpenter > frees the worker. Or kfree_rcu() inside an rcu lock or something. > > a14b0c5e3b0741 Mary Strodl 2025-09-23 343 } > a14b0c5e3b0741 Mary Strodl 2025-09-23 344 > a14b0c5e3b0741 Mary Strodl 2025-09-23 345 while ((irq_enabled = atomic_read(&priv->irq_enabled)) && > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki