Hi Arnd, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.14.y head: 3dfa869cb79d60a2fe66efb4a11517ec7c89de16 commit: 3afd2af53a59327caf21aaadbf5c9b6f3fc0117b [717/2116] m68knommu: only set CONFIG_ISA_DMA_API for ColdFire sub-arch config: m68k-randconfig-r021-20210927 (attached as .config) compiler: m68k-linux-gcc (GCC) 11.2.0 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/stable/linux-stable-rc.gi... git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git git fetch --no-tags linux-stable-rc linux-5.14.y git checkout 3afd2af53a59327caf21aaadbf5c9b6f3fc0117b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=m68k 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/mmc/host/wbsd.c: In function 'wbsd_request_end': 212 | dmaflags = claim_dma_lock(); | ^~~~~~~~~~~~~~ 215 | release_dma_lock(dmaflags); | ^~~~~~~~~~~~~~~~ | release_task cc1: some warnings being treated as errors -- sound/core/isadma.c: In function 'snd_dma_program': 33 | flags = claim_dma_lock(); | ^~~~~~~~~~~~~~ 41 | release_dma_lock(flags); | ^~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/claim_dma_lock +212 drivers/mmc/host/wbsd.c ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 203 ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 204 static void wbsd_request_end(struct wbsd_host *host, struct mmc_request *mrq) ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 205 { ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 206 unsigned long dmaflags; ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 207 cfa7f52164d6cd drivers/mmc/wbsd.c Pierre Ossman 2006-01-08 208 if (host->dma >= 0) { ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 209 /* ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 210 * Release ISA DMA controller. ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 211 */ ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 @212 dmaflags = claim_dma_lock(); ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 213 disable_dma(host->dma); ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 214 clear_dma_ff(host->dma); ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 @215 release_dma_lock(dmaflags); ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 216 ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 217 /* ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 218 * Disable DMA on host. ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 219 */ ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 220 wbsd_write_index(host, WBSD_IDX_DMA, 0); ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 221 } ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 222 ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 223 host->mrq = NULL; ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 224 ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 225 /* ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 226 * MMC layer might call back into the driver so first unlock. ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 227 */ ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 228 spin_unlock(&host->lock); ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 229 mmc_request_done(host->mmc, mrq); ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 230 spin_lock(&host->lock); ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 231 } ^1da177e4c3f41 drivers/mmc/wbsd.c Linus Torvalds 2005-04-16 232 :::::: The code at line 212 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds <torvalds(a)ppc970.osdl.org&gt; :::::: CC: Linus Torvalds <torvalds(a)ppc970.osdl.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org