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[90.233.198.81]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-3045acd7b0asm47498281fa.0.2025.01.03.09.54.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Jan 2025 09:54:45 -0800 (PST) From: Uladzislau Rezki X-Google-Original-From: Uladzislau Rezki Date: Fri, 3 Jan 2025 18:54:43 +0100 To: Todd Kjos Cc: Uladzislau Rezki , oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, "Paul E. McKenney" , "Uladzislau Rezki (Sony)" Subject: Re: drivers/android/binder.c:1819: warning: Function parameter or struct member 'file' not described in 'binder_task_work_cb' Message-ID: References: <202501031535.erbln3A2-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: <202501031535.erbln3A2-lkp@intel.com> On Fri, Jan 03, 2025 at 03:39:37PM +0800, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: 0bc21e701a6ffacfdde7f04f87d664d82e8a13bf > commit: 28b3ae426598e722cf5d5ab9cc7038791b955a56 rcu: Introduce CONFIG_RCU_EXP_CPU_STALL_TIMEOUT > date: 2 years, 8 months ago > config: csky-randconfig-r022-20230522 (https://download.01.org/0day-ci/archive/20250103/202501031535.erbln3A2-lkp@intel.com/config) > compiler: csky-linux-gcc (GCC) 12.4.0 > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250103/202501031535.erbln3A2-lkp@intel.com/reproduce) > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot > | Closes: https://lore.kernel.org/oe-kbuild-all/202501031535.erbln3A2-lkp@intel.com/ > > All warnings (new ones prefixed by >>): > > drivers/android/binder.c:233: warning: Function parameter or struct member '_proc' not described in 'binder_proc_unlock' > drivers/android/binder.c:233: warning: Excess function parameter 'proc' description in 'binder_proc_unlock' > drivers/android/binder.c:335: warning: expecting prototype for binder_node_unlock(). Prototype was for binder_node_inner_unlock() instead > drivers/android/binder.c:1155: warning: expecting prototype for binder_dec_ref(). Prototype was for binder_dec_ref_olocked() instead > >> drivers/android/binder.c:1819: warning: Function parameter or struct member 'file' not described in 'binder_task_work_cb' > >> drivers/android/binder.c:1819: warning: Excess struct member 'fd' description in 'binder_task_work_cb' > >> drivers/android/binder.c:2254: warning: Function parameter or struct member 'offset' not described in 'binder_ptr_fixup' > >> drivers/android/binder.c:2254: warning: Function parameter or struct member 'skip_size' not described in 'binder_ptr_fixup' > >> drivers/android/binder.c:2254: warning: Function parameter or struct member 'fixup_data' not described in 'binder_ptr_fixup' > >> drivers/android/binder.c:2254: warning: Function parameter or struct member 'node' not described in 'binder_ptr_fixup' > >> drivers/android/binder.c:2274: warning: Function parameter or struct member 'offset' not described in 'binder_sg_copy' > >> drivers/android/binder.c:2274: warning: Function parameter or struct member 'sender_uaddr' not described in 'binder_sg_copy' > >> drivers/android/binder.c:2274: warning: Function parameter or struct member 'length' not described in 'binder_sg_copy' > >> drivers/android/binder.c:2274: warning: Function parameter or struct member 'node' not described in 'binder_sg_copy' > drivers/android/binder.c:2683: warning: Function parameter or struct member 'procp' not described in 'binder_get_node_refs_for_txn' > drivers/android/binder.c:2683: warning: Excess function parameter 'proc' description in 'binder_get_node_refs_for_txn' > >> drivers/android/binder.c:3510: warning: Function parameter or struct member 'thread' not described in 'binder_free_buf' > > > vim +1819 drivers/android/binder.c > > 7980240b6d63e0 Martijn Coenen 2017-02-03 1806 > 80cd795630d652 Todd Kjos 2018-12-14 1807 /** > 80cd795630d652 Todd Kjos 2018-12-14 1808 * struct binder_task_work_cb - for deferred close > 80cd795630d652 Todd Kjos 2018-12-14 1809 * > 80cd795630d652 Todd Kjos 2018-12-14 1810 * @twork: callback_head for task work > 80cd795630d652 Todd Kjos 2018-12-14 1811 * @fd: fd to close > 80cd795630d652 Todd Kjos 2018-12-14 1812 * > 80cd795630d652 Todd Kjos 2018-12-14 1813 * Structure to pass task work to be handled after > 80cd795630d652 Todd Kjos 2018-12-14 1814 * returning from binder_ioctl() via task_work_add(). > 80cd795630d652 Todd Kjos 2018-12-14 1815 */ > 80cd795630d652 Todd Kjos 2018-12-14 1816 struct binder_task_work_cb { > 80cd795630d652 Todd Kjos 2018-12-14 1817 struct callback_head twork; > 80cd795630d652 Todd Kjos 2018-12-14 1818 struct file *file; > 80cd795630d652 Todd Kjos 2018-12-14 @1819 }; > 80cd795630d652 Todd Kjos 2018-12-14 1820 > > :::::: The code at line 1819 was first introduced by commit > :::::: 80cd795630d6526ba729a089a435bf74a57af927 binder: fix use-after-free due to ksys_close() during fdget() > Above warnings have nothing to do with the: commit: 28b3ae426598e722cf5d5ab9cc7038791b955a56 rcu: Introduce CONFIG_RCU_EXP_CPU_STALL_TIMEOUT Add "Todd Kjos ", owner of the patch, to sort those warnings out. -- Uladzislau Rezki