tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: d15be546031cf65a0fc34879beca02fd90fe7ac7 commit: 80591e61a0f7e88deaada69844e4a31280c4a38f kbuild: tell sparse about the $ARCH date: 8 months ago config: alpha-randconfig-s031-20200723 (attached as .config) compiler: alpha-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.2-93-g4c6cbe55-dirty git checkout 80591e61a0f7e88deaada69844e4a31280c4a38f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=alpha 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/block/drbd/drbd_state.c:1903:30: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_state.c:1903:30: sparse: struct disk_conf [noderef] <asn:4> * drivers/block/drbd/drbd_state.c:1903:30: sparse: struct disk_conf * drivers/block/drbd/drbd_state.c:834:22: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_state.c:834:22: sparse: struct disk_conf [noderef] <asn:4> * drivers/block/drbd/drbd_state.c:834:22: sparse: struct disk_conf * drivers/block/drbd/drbd_state.c:838:14: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_state.c:838:14: sparse: struct net_conf [noderef] <asn:4> * drivers/block/drbd/drbd_state.c:838:14: sparse: struct net_conf * drivers/block/drbd/drbd_state.c:1064:22: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_state.c:1064:22: sparse: struct disk_conf [noderef] <asn:4> * drivers/block/drbd/drbd_state.c:1064:22: sparse: struct disk_conf * drivers/block/drbd/drbd_state.c:1341:36: sparse: sparse: cast to non-scalar drivers/block/drbd/drbd_state.c:1342:36: sparse: sparse: cast to non-scalar drivers/block/drbd/drbd_state.c:2069:17: sparse: sparse: incompatible types in comparison expression (different address spaces): drivers/block/drbd/drbd_state.c:2069:17: sparse: struct net_conf [noderef] <asn:4> * drivers/block/drbd/drbd_state.c:2069:17: sparse: struct net_conf * drivers/block/drbd/drbd_state.c:838:14: sparse: sparse: context imbalance in 'is_valid_state' - different lock contexts for basic block drivers/block/drbd/drbd_state.c:1070:9: sparse: sparse: context imbalance in 'sanitize_state' - different lock contexts for basic block drivers/block/drbd/drbd_state.c:1949:25: sparse: sparse: context imbalance in 'after_state_ch' - unexpected unlock drivers/block/drbd/drbd_state.c: note: in included file (through include/linux/irqflags.h, include/linux/spinlock.h, include/linux/mmzone.h, ...): vim +/_conn_request_state +47 arch/alpha/include/asm/irqflags.h df9ee29270c11db David Howells 2010-10-07 44 df9ee29270c11db David Howells 2010-10-07 45 static inline void arch_local_irq_enable(void) df9ee29270c11db David Howells 2010-10-07 46 { df9ee29270c11db David Howells 2010-10-07 @47 barrier(); df9ee29270c11db David Howells 2010-10-07 48 setipl(IPL_MIN); df9ee29270c11db David Howells 2010-10-07 49 } df9ee29270c11db David Howells 2010-10-07 50 :::::: The code at line 47 was first introduced by commit :::::: df9ee29270c11dba7d0fe0b83ce47a4d8e8d2101 Fix IRQ flag handling naming :::::: TO: David Howells <dhowells(a)redhat.com&gt; :::::: CC: David Howells <dhowells(a)redhat.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org