Hi Rasmus, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 5076190daded2197f62fe92cf69674488be44175 commit: 5a35435ef4e6e4bd2aabd6706b146b298a9cffe5 soc: fsl: qe: remove PPC32 dependency from CONFIG_QUICC_ENGINE date: 3 months ago config: powerpc-randconfig-a001-20200319 (attached as .config) compiler: powerpc64-linux-gcc (GCC) 9.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 5a35435ef4e6e4bd2aabd6706b146b298a9cffe5 # save the attached .config to linux build tree GCC_VERSION=9.2.0 make.cross ARCH=powerpc If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/usb/gadget/udc/fsl_qe_udc.c: In function 'qe_ep0_rx': 836 | vaddr = (u32)phys_to_virt(in_be32(&bd->buf)); | ^ In file included from drivers/usb/gadget/udc/fsl_qe_udc.c:41: 837 | frame_set_data(pframe, (u8 *)vaddr); | ^ drivers/usb/gadget/udc/fsl_qe_udc.h:229:47: note: in definition of macro 'frame_set_data' 229 | #define frame_set_data(frm, dat) (frm->data = dat) | ^~~ drivers/usb/gadget/udc/fsl_qe_udc.c: In function 'ep_rx_tasklet': drivers/usb/gadget/udc/fsl_qe_udc.c:964:13: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] 964 | vaddr = (u32)phys_to_virt(in_be32(&bd->buf)); | ^ In file included from drivers/usb/gadget/udc/fsl_qe_udc.c:41: drivers/usb/gadget/udc/fsl_qe_udc.c:965:28: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 965 | frame_set_data(pframe, (u8 *)vaddr); | ^ drivers/usb/gadget/udc/fsl_qe_udc.h:229:47: note: in definition of macro 'frame_set_data' 229 | #define frame_set_data(frm, dat) (frm->data = dat) | ^~~ drivers/usb/gadget/udc/fsl_qe_udc.c: In function 'ep_req_rx': drivers/usb/gadget/udc/fsl_qe_udc.c:1490:12: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] 1490 | vaddr = (u32)phys_to_virt(in_be32(&bd->buf)); | ^ In file included from drivers/usb/gadget/udc/fsl_qe_udc.c:41: drivers/usb/gadget/udc/fsl_qe_udc.c:1491:27: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 1491 | frame_set_data(pframe, (u8 *)vaddr); | ^ drivers/usb/gadget/udc/fsl_qe_udc.h:229:47: note: in definition of macro 'frame_set_data' 229 | #define frame_set_data(frm, dat) (frm->data = dat) | ^~~ drivers/usb/gadget/udc/fsl_qe_udc.c: In function 'qe_ep_init': drivers/usb/gadget/udc/fsl_qe_udc.c:542:37: warning: this statement may fall through [-Wimplicit-fallthrough=] 542 | if ((max == 128) || (max == 256) || (max == 512)) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~ drivers/usb/gadget/udc/fsl_qe_udc.c:544:4: note: here 544 | default: | ^~~~~~~ drivers/usb/gadget/udc/fsl_qe_udc.c:563:8: warning: this statement may fall through [-Wimplicit-fallthrough=] 563 | if (max <= 1024) | ^ drivers/usb/gadget/udc/fsl_qe_udc.c:565:4: note: here 565 | case USB_SPEED_FULL: | ^~~~ drivers/usb/gadget/udc/fsl_qe_udc.c:566:8: warning: this statement may fall through [-Wimplicit-fallthrough=] 566 | if (max <= 64) | ^ drivers/usb/gadget/udc/fsl_qe_udc.c:568:4: note: here 568 | default: | ^~~~~~~ drivers/usb/gadget/udc/fsl_qe_udc.c:580:8: warning: this statement may fall through [-Wimplicit-fallthrough=] 580 | if (max <= 1024) | ^ drivers/usb/gadget/udc/fsl_qe_udc.c:582:4: note: here 582 | case USB_SPEED_FULL: | ^~~~ drivers/usb/gadget/udc/fsl_qe_udc.c:596:5: warning: this statement may fall through [-Wimplicit-fallthrough=] 596 | switch (max) { | ^~~~~~ drivers/usb/gadget/udc/fsl_qe_udc.c:608:4: note: here 608 | case USB_SPEED_LOW: | ^~~~ vim +836 drivers/usb/gadget/udc/fsl_qe_udc.c 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 807 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 808 static int qe_ep0_rx(struct qe_udc *udc) 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 809 { 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 810 struct qe_ep *ep = &udc->eps[0]; 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 811 struct qe_frame *pframe; 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 812 struct qe_bd __iomem *bd; 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 813 u32 bdstatus, length; 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 814 u32 vaddr; 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 815 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 816 pframe = ep->rxframe; 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 817 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 818 if (ep->dir == USB_DIR_IN) { 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 819 dev_err(udc->dev, "ep0 not a control endpoint\n"); 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 820 return -EINVAL; 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 821 } 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 822 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 823 bd = ep->n_rxbd; 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 824 bdstatus = in_be32((u32 __iomem *)bd); 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 825 length = bdstatus & BD_LENGTH_MASK; 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 826 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 827 while (!(bdstatus & R_E) && length) { 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 828 if ((bdstatus & R_F) && (bdstatus & R_L) 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 829 && !(bdstatus & R_ERROR)) { 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 830 if (length == USB_CRC_SIZE) { 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 831 udc->ep0_state = WAIT_FOR_SETUP; 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 832 dev_vdbg(udc->dev, 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 833 "receive a ZLP in status phase\n"); 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 834 } else { 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 835 qe_frame_clean(pframe); 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 @836 vaddr = (u32)phys_to_virt(in_be32(&bd->buf)); 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 @837 frame_set_data(pframe, (u8 *)vaddr); 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 838 frame_set_length(pframe, 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 839 (length - USB_CRC_SIZE)); 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 840 frame_set_status(pframe, FRAME_OK); 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 841 switch (bdstatus & R_PID) { 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 842 case R_PID_SETUP: 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 843 frame_set_info(pframe, PID_SETUP); 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 844 break; 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 845 case R_PID_DATA1: 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 846 frame_set_info(pframe, PID_DATA1); 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 847 break; 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 848 default: 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 849 frame_set_info(pframe, PID_DATA0); 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 850 break; 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 851 } 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 852 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 853 if ((bdstatus & R_PID) == R_PID_SETUP) 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 854 ep0_setup_handle(udc); 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 855 else 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 856 qe_ep_rxframe_handle(ep); 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 857 } 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 858 } else { 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 859 dev_err(udc->dev, "The receive frame with error!\n"); 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 860 } 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 861 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 862 /* note: don't clear the rxbd's buffer address */ 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 863 recycle_one_rxbd(ep); 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 864 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 865 /* Get next BD */ 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 866 if (bdstatus & R_W) 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 867 bd = ep->rxbase; 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 868 else 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 869 bd++; 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 870 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 871 bdstatus = in_be32((u32 __iomem *)bd); 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 872 length = bdstatus & BD_LENGTH_MASK; 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 873 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 874 } 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 875 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 876 ep->n_rxbd = bd; 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 877 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 878 return 0; 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 879 } 3948f0e0c999a6 drivers/usb/gadget/fsl_qe_udc.c Li Yang 2008-09-02 880 :::::: The code at line 836 was first introduced by commit :::::: 3948f0e0c999a6201e9898bb8fbe3c6cc1199276 usb: add Freescale QE/CPM USB peripheral controller driver :::::: TO: Li Yang <leoli(a)freescale.com&gt; :::::: CC: Greg Kroah-Hartman <gregkh(a)suse.de&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org