Hi Jeffy, [auto build test WARNING on bluetooth-next/master] [also build test WARNING on v4.13-rc1 next-20170719] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Jeffy-Chen/Bluetooth-btusb-Fix-memory-leak-in-play_deferred/20170719-044201 base: https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git master config: i386-allyesconfig (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=i386 Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All warnings (new ones prefixed by >>): drivers/bluetooth/btusb.c: In function 'btusb_resume': >> drivers/bluetooth/btusb.c:3288:3: warning: 'err' may be used uninitialized in this function [-Wmaybe-uninitialized] BT_ERR("%s urb %p submission failed (%d)", ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/bluetooth/btusb.c:3266:6: note: 'err' was declared here int err; ^~~ vim +/err +3288 drivers/bluetooth/btusb.c 3262 3263 static void play_deferred(struct btusb_data *data) 3264 { 3265 struct urb *urb; 3266 int err; 3267 3268 while ((urb = usb_get_from_anchor(&data->deferred))) { 3269 usb_anchor_urb(urb, &data->tx_anchor); 3270 3271 err = usb_submit_urb(urb, GFP_ATOMIC); 3272 if (err < 0) { 3273 if (err != -EPERM && err != -ENODEV) 3274 BT_ERR("%s urb %p submission failed (%d)", 3275 data->hdev->name, urb, -err); 3276 kfree(urb->setup_packet); 3277 usb_unanchor_urb(urb); 3278 usb_free_urb(urb); 3279 break; 3280 } 3281 3282 data->tx_in_flight++; 3283 usb_free_urb(urb); 3284 } 3285 3286 /* Cleanup the rest deferred urbs. */ 3287 while ((urb = usb_get_from_anchor(&data->deferred))) { > 3288 BT_ERR("%s urb %p submission failed (%d)", 3289 data->hdev->name, urb, -err); 3290 kfree(urb->setup_packet); 3291 usb_free_urb(urb); 3292 } 3293 } 3294 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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