tree: https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-5.11.y-rt-rebase head: 35b24989ea26638ae1f3379ef494e50aba21576a commit: 35b24989ea26638ae1f3379ef494e50aba21576a [208/208] Add localversion for -RT release config: x86_64-randconfig-m001-20210309 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git/com... git remote add linux-rt-devel https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git git fetch --no-tags linux-rt-devel linux-5.11.y-rt-rebase git checkout 35b24989ea26638ae1f3379ef494e50aba21576a # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/net/ethernet/pensando/ionic/ionic_main.c: In function 'ionic_identify': 420 | strncpy(ident->drv.driver_ver_str, UTS_RELEASE, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 421 | sizeof(ident->drv.driver_ver_str) - 1); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/strncpy +420 drivers/net/ethernet/pensando/ionic/ionic_main.c fbfb8031533c92 Shannon Nelson 2019-09-03 409 fbfb8031533c92 Shannon Nelson 2019-09-03 410 int ionic_identify(struct ionic *ionic) fbfb8031533c92 Shannon Nelson 2019-09-03 411 { fbfb8031533c92 Shannon Nelson 2019-09-03 412 struct ionic_identity *ident = &ionic->ident; fbfb8031533c92 Shannon Nelson 2019-09-03 413 struct ionic_dev *idev = &ionic->idev; fbfb8031533c92 Shannon Nelson 2019-09-03 414 size_t sz; fbfb8031533c92 Shannon Nelson 2019-09-03 415 int err; fbfb8031533c92 Shannon Nelson 2019-09-03 416 fbfb8031533c92 Shannon Nelson 2019-09-03 417 memset(ident, 0, sizeof(*ident)); fbfb8031533c92 Shannon Nelson 2019-09-03 418 fbfb8031533c92 Shannon Nelson 2019-09-03 419 ident->drv.os_type = cpu_to_le32(IONIC_OS_TYPE_LINUX); 1fcbebf115d9ce Shannon Nelson 2020-03-06 @420 strncpy(ident->drv.driver_ver_str, UTS_RELEASE, fbfb8031533c92 Shannon Nelson 2019-09-03 421 sizeof(ident->drv.driver_ver_str) - 1); fbfb8031533c92 Shannon Nelson 2019-09-03 422 fbfb8031533c92 Shannon Nelson 2019-09-03 423 mutex_lock(&ionic->dev_cmd_lock); fbfb8031533c92 Shannon Nelson 2019-09-03 424 fbfb8031533c92 Shannon Nelson 2019-09-03 425 sz = min(sizeof(ident->drv), sizeof(idev->dev_cmd_regs->data)); fbfb8031533c92 Shannon Nelson 2019-09-03 426 memcpy_toio(&idev->dev_cmd_regs->data, &ident->drv, sz); fbfb8031533c92 Shannon Nelson 2019-09-03 427 fbfb8031533c92 Shannon Nelson 2019-09-03 428 ionic_dev_cmd_identify(idev, IONIC_IDENTITY_VERSION_1); fbfb8031533c92 Shannon Nelson 2019-09-03 429 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); fbfb8031533c92 Shannon Nelson 2019-09-03 430 if (!err) { fbfb8031533c92 Shannon Nelson 2019-09-03 431 sz = min(sizeof(ident->dev), sizeof(idev->dev_cmd_regs->data)); fbfb8031533c92 Shannon Nelson 2019-09-03 432 memcpy_fromio(&ident->dev, &idev->dev_cmd_regs->data, sz); fbfb8031533c92 Shannon Nelson 2019-09-03 433 } fbfb8031533c92 Shannon Nelson 2019-09-03 434 mutex_unlock(&ionic->dev_cmd_lock); fbfb8031533c92 Shannon Nelson 2019-09-03 435 a21b5d49e77a2e Shannon Nelson 2020-10-01 436 if (err) { a21b5d49e77a2e Shannon Nelson 2020-10-01 437 dev_err(ionic->dev, "Cannot identify ionic: %dn", err); a21b5d49e77a2e Shannon Nelson 2020-10-01 438 goto err_out; a21b5d49e77a2e Shannon Nelson 2020-10-01 439 } fbfb8031533c92 Shannon Nelson 2019-09-03 440 a21b5d49e77a2e Shannon Nelson 2020-10-01 441 err = ionic_lif_identify(ionic, IONIC_LIF_TYPE_CLASSIC, a21b5d49e77a2e Shannon Nelson 2020-10-01 442 &ionic->ident.lif); a21b5d49e77a2e Shannon Nelson 2020-10-01 443 if (err) { a21b5d49e77a2e Shannon Nelson 2020-10-01 444 dev_err(ionic->dev, "Cannot identify LIFs: %d\n", err); a21b5d49e77a2e Shannon Nelson 2020-10-01 445 goto err_out; a21b5d49e77a2e Shannon Nelson 2020-10-01 446 } fbfb8031533c92 Shannon Nelson 2019-09-03 447 fbfb8031533c92 Shannon Nelson 2019-09-03 448 return 0; fbfb8031533c92 Shannon Nelson 2019-09-03 449 a21b5d49e77a2e Shannon Nelson 2020-10-01 450 err_out: fbfb8031533c92 Shannon Nelson 2019-09-03 451 return err; fbfb8031533c92 Shannon Nelson 2019-09-03 452 } fbfb8031533c92 Shannon Nelson 2019-09-03 453 :::::: The code at line 420 was first introduced by commit :::::: 1fcbebf115d9ce077c2ba5ecfb521cc1eedcb467 ionic: drop ethtool driver version :::::: TO: Shannon Nelson <snelson(a)pensando.io&gt; :::::: CC: David S. Miller <davem(a)davemloft.net&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org