tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git staging-testing head: ae7471cae00a432d1c9692452b1b9175a8f3c1b3 commit: 71f09c5ae9d2c2c1344987b104dc167ab1922b72 [227/311] staging: r8188eu: Remove wrapper around vfree config: mips-allyesconfig (attached as .config) compiler: mips-linux-gcc (GCC) 10.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git/commit... git remote add staging https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git git fetch --no-tags staging staging-testing git checkout 71f09c5ae9d2c2c1344987b104dc167ab1922b72 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/staging/r8188eu/hal/rtl8188e_hal_init.c: In function 'rtw_IOL_cmd_tx_pkt_buf_dump': 366 | vfree(pbuf); | ^~~~~ | kvfree cc1: some warnings being treated as errors vim +366 drivers/staging/r8188eu/hal/rtl8188e_hal_init.c 338 339 void rtw_IOL_cmd_tx_pkt_buf_dump(struct adapter *Adapter, int data_len) 340 { 341 u32 fifo_data, reg_140; 342 u32 addr, rstatus, loop = 0; 343 u16 data_cnts = (data_len/8)+1; 344 u8 *pbuf = rtw_zvmalloc(data_len+10); 345 DBG_88E("###### %s ######\n", __func__); 346 347 rtw_write8(Adapter, REG_PKT_BUFF_ACCESS_CTRL, TXPKT_BUF_SELECT); 348 if (pbuf) { 349 for (addr = 0; addr < data_cnts; addr++) { 350 rtw_write32(Adapter, 0x140, addr); 351 rtw_usleep_os(2); 352 loop = 0; 353 do { 354 rstatus = (reg_140 = rtw_read32(Adapter, REG_PKTBUF_DBG_CTRL)&BIT24); 355 if (rstatus) { 356 fifo_data = rtw_read32(Adapter, REG_PKTBUF_DBG_DATA_L); 357 memcpy(pbuf+(addr*8), &fifo_data, 4); 358 359 fifo_data = rtw_read32(Adapter, REG_PKTBUF_DBG_DATA_H); 360 memcpy(pbuf+(addr*8+4), &fifo_data, 4); 361 } 362 rtw_usleep_os(2); 363 } while (!rstatus && (loop++ < 10)); 364 } 365 rtw_IOL_cmd_buf_dump(Adapter, data_len, pbuf); 367 } 368 DBG_88E("###### %s ######\n", __func__); 369 } 370 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org