tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 7ddd09fc4b745fb1d8942f95389583e08412e0cd commit: 27fc2e84ab6df89e3c8f333701055af6704634c5 [5090/5337] init/Kconfig: enable -O3 for all arches config: i386-randconfig-f001-20191226 (attached as .config) compiler: gcc-7 (Debian 7.5.0-3) 7.5.0 reproduce: git checkout 27fc2e84ab6df89e3c8f333701055af6704634c5 # save the attached .config to linux build tree make ARCH=i386 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> Note: it may well be a FALSE warning. FWIW you are at least aware of it now. All warnings (new ones prefixed by >>): drivers//base/devcon.c: In function 'device_connection_find': >> drivers//base/devcon.c:180:9: warning: array subscript is below array bounds [-Warray-bounds] dev = bus_find_device_by_name(bus, NULL, con->endpoint[ep]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers//base/devcon.c:180:9: warning: array subscript is below array bounds [-Warray-bounds] dev = bus_find_device_by_name(bus, NULL, con->endpoint[ep]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +180 drivers//base/devcon.c 80e04837a40f6f Heikki Krogerus 2019-02-13 169 f2d9b66d84f3ff Heikki Krogerus 2018-03-20 170 /* This tries to find the device from the most common bus types by name. */ f2d9b66d84f3ff Heikki Krogerus 2018-03-20 171 static void *generic_match(struct device_connection *con, int ep, void *data) f2d9b66d84f3ff Heikki Krogerus 2018-03-20 172 { f2d9b66d84f3ff Heikki Krogerus 2018-03-20 173 struct bus_type *bus; f2d9b66d84f3ff Heikki Krogerus 2018-03-20 174 struct device *dev; f2d9b66d84f3ff Heikki Krogerus 2018-03-20 175 80e04837a40f6f Heikki Krogerus 2019-02-13 176 if (con->fwnode) 80e04837a40f6f Heikki Krogerus 2019-02-13 177 return device_connection_fwnode_match(con); 80e04837a40f6f Heikki Krogerus 2019-02-13 178 f2d9b66d84f3ff Heikki Krogerus 2018-03-20 179 for (bus = generic_match_buses[0]; bus; bus++) { f2d9b66d84f3ff Heikki Krogerus 2018-03-20 @180 dev = bus_find_device_by_name(bus, NULL, con->endpoint[ep]); f2d9b66d84f3ff Heikki Krogerus 2018-03-20 181 if (dev) f2d9b66d84f3ff Heikki Krogerus 2018-03-20 182 return dev; f2d9b66d84f3ff Heikki Krogerus 2018-03-20 183 } f2d9b66d84f3ff Heikki Krogerus 2018-03-20 184 f2d9b66d84f3ff Heikki Krogerus 2018-03-20 185 /* f2d9b66d84f3ff Heikki Krogerus 2018-03-20 186 * We only get called if a connection was found, tell the caller to f2d9b66d84f3ff Heikki Krogerus 2018-03-20 187 * wait for the other device to show up. f2d9b66d84f3ff Heikki Krogerus 2018-03-20 188 */ f2d9b66d84f3ff Heikki Krogerus 2018-03-20 189 return ERR_PTR(-EPROBE_DEFER); f2d9b66d84f3ff Heikki Krogerus 2018-03-20 190 } f2d9b66d84f3ff Heikki Krogerus 2018-03-20 191 :::::: The code at line 180 was first introduced by commit :::::: f2d9b66d84f3ff5ea3aff111e6a403e04fa8bf37 drivers: base: Unified device connection lookup :::::: TO: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> :::::: CC: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx Intel Corporation
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