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[2603:800c:1a02:1bae:a7fa:157f:969a:4cde]) by smtp.gmail.com with ESMTPSA id r11-20020a170903410b00b001743be790b4sm6101339pld.215.2022.09.23.10.29.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Sep 2022 10:29:53 -0700 (PDT) Sender: Tejun Heo Date: Fri, 23 Sep 2022 07:29:52 -1000 From: Tejun Heo To: Ming Lei Cc: linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, Marco Patalano , Muneendra Subject: Re: [PATCH] cgroup: fix cgroup_get_from_id Message-ID: References: <20220923115119.2035603-1-ming.lei@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220923115119.2035603-1-ming.lei@redhat.com> X-Spam-Status: No, score=-1.5 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_EF,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 23, 2022 at 07:51:19PM +0800, Ming Lei wrote: > cgroup has to be one kernfs dir, otherwise kernel panic is caused, > especially cgroup id is provide from userspace. > > Reported-by: Marco Patalano > Fixes: 6b658c4863c1 ("scsi: cgroup: Add cgroup_get_from_id()") > Cc: Muneendra > Signed-off-by: Ming Lei Applied to cgroup/for-6.0-fixes with the subject changed to "cgroup: cgroup_get_from_id() must check the looked-up kn is a directory" and stable cc'd. Thanks. -- tejun