tree: https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git HPMC_and_TOC_on_c8000 head: 96e1b009bc4030ae126df7e90ff9d434c5766d99 commit: c743202c8e5cfe0ee49a274751bf02bb893faa19 [1/3] hpmc trigger config: i386-randconfig-s001-20211008 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git/c... git remote add deller-parisc https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git git fetch --no-tags deller-parisc HPMC_and_TOC_on_c8000 git checkout c743202c8e5cfe0ee49a274751bf02bb893faa19 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash arch/x86/kernel/ arch/x86/lib/ arch/x86/mm/ drivers/android/ drivers/base/ drivers/dma-buf/ drivers/gpu/drm/ drivers/input/ drivers/interconnect/ drivers/misc/mei/ drivers/misc/vmw_vmci/ drivers/mtd/devices/ drivers/net/ drivers/platform/chrome/ drivers/pwm/ drivers/spi/ drivers/staging/fwserial/ drivers/tty/ fs/cifs/ fs/nfs/ kernel/ mm/ net/sunrpc/ samples/ftrace/ samples/trace_events/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/tty/sysrq.c:1189:19: sparse: expected unsigned long *[addressable] [toplevel] hpmc_addr drivers/tty/sysrq.c:1189:19: sparse: got void [noderef] __iomem * drivers/tty/sysrq.c: note: in included file (through include/linux/rculist.h, include/linux/sched/signal.h): include/linux/rcupdate.h:718:9: sparse: sparse: context imbalance in 'sysrq_handle_crash' - unexpected unlock Please review and possibly fold the followup patch. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org