Hi Jeffy, [auto build test WARNING on bluetooth-next/master] [also build test WARNING on v4.13-rc1] [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: arm-exynos_defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=arm 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 >>): In file included from drivers/bluetooth/btusb.c:32:0: drivers/bluetooth/btusb.c: In function 'btusb_resume': >> include/net/bluetooth/bluetooth.h:136:26: warning: 'err' may be used uninitialized in this function [-Wmaybe-uninitialized] #define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__) ^~~~~~ drivers/bluetooth/btusb.c:3266:6: note: 'err' was declared here int err; ^~~ -- In file included from drivers//bluetooth/btusb.c:32:0: drivers//bluetooth/btusb.c: In function 'btusb_resume': >> include/net/bluetooth/bluetooth.h:136:26: warning: 'err' may be used uninitialized in this function [-Wmaybe-uninitialized] #define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__) ^~~~~~ drivers//bluetooth/btusb.c:3266:6: note: 'err' was declared here int err; ^~~ vim +/err +136 include/net/bluetooth/bluetooth.h 3ed7003e7 Joe Perches 2012-02-16 133 3ed7003e7 Joe Perches 2012-02-16 134 #define BT_INFO(fmt, ...) bt_info(fmt "\n", ##__VA_ARGS__) 594b31ea7 Frederic Danis 2015-09-23 135 #define BT_WARN(fmt, ...) bt_warn(fmt "\n", ##__VA_ARGS__) 3ed7003e7 Joe Perches 2012-02-16 @136 #define BT_ERR(fmt, ...) bt_err(fmt "\n", ##__VA_ARGS__) 3ed7003e7 Joe Perches 2012-02-16 137 #define BT_DBG(fmt, ...) pr_debug(fmt "\n", ##__VA_ARGS__) ^1da177e4 Linus Torvalds 2005-04-16 138 :::::: The code at line 136 was first introduced by commit :::::: 3ed7003e724a04482e0ef1e794eece8c1c177b37 Bluetooth: Add logging functions bt_info and bt_err :::::: TO: Joe Perches <joe@xxxxxxxxxxx> :::::: CC: Johan Hedberg <johan.hedberg@xxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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