tree: https://github.com/digitalocean/linux-coresched coresched/pre-v6-v5.7.y head: 84dae2bc63df899fbaba8db139b8f85616357f60 commit: d40b965ae085c398fdfcb83788e145f2c9098ae5 [3/15] sched: Core-wide rq->lock config: i386-randconfig-s002-20200618 (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-rc1-10-gc17b1b06-dirty git checkout d40b965ae085c398fdfcb83788e145f2c9098ae5 # save the attached .config to linux build tree make W=1 C=1 ARCH=i386 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' 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 >>) kernel/sched/deadline.c:2070:13: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/deadline.c:2070:13: sparse: struct task_struct * kernel/sched/deadline.c:2070:13: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/deadline.c:2197:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/deadline.c:2197:25: sparse: struct task_struct * kernel/sched/deadline.c:2197:25: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/deadline.c:1721:42: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct sched_dl_entity *b @@ got struct sched_dl_entity [noderef] <asn:4> * @@ kernel/sched/deadline.c:1721:42: sparse: expected struct sched_dl_entity *b kernel/sched/deadline.c:1721:42: sparse: got struct sched_dl_entity [noderef] <asn:4> * kernel/sched/deadline.c:1732:38: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] <asn:4> *curr @@ kernel/sched/deadline.c:1732:38: sparse: expected struct task_struct *tsk kernel/sched/deadline.c:1732:38: sparse: got struct task_struct [noderef] <asn:4> *curr kernel/sched/deadline.c:1054:23: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] <asn:4> *curr @@ kernel/sched/deadline.c:1054:23: sparse: expected struct task_struct *p kernel/sched/deadline.c:1054:23: sparse: got struct task_struct [noderef] <asn:4> *curr kernel/sched/deadline.c:1183:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] <asn:4> *curr @@ kernel/sched/deadline.c:1183:38: sparse: expected struct task_struct *curr kernel/sched/deadline.c:1183:38: sparse: got struct task_struct [noderef] <asn:4> *curr kernel/sched/deadline.c:1929:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] <asn:4> *parent @@ kernel/sched/deadline.c:1929:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/deadline.c:1929:9: sparse: got struct sched_domain [noderef] <asn:4> *parent kernel/sched/deadline.c:1615:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] <asn:4> *[addressable] __val @@ kernel/sched/deadline.c:1615:14: sparse: expected struct task_struct *curr kernel/sched/deadline.c:1615:14: sparse: got struct task_struct [noderef] <asn:4> *[addressable] __val kernel/sched/deadline.c:1682:43: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] <asn:4> *curr @@ kernel/sched/deadline.c:1682:43: sparse: expected struct task_struct *p kernel/sched/deadline.c:1682:43: sparse: got struct task_struct [noderef] <asn:4> *curr kernel/sched/deadline.c:2232:38: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] <asn:4> *curr @@ kernel/sched/deadline.c:2232:38: sparse: expected struct task_struct *tsk kernel/sched/deadline.c:2232:38: sparse: got struct task_struct [noderef] <asn:4> *curr kernel/sched/deadline.c:2234:23: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] <asn:4> *curr @@ kernel/sched/deadline.c:2234:23: sparse: expected struct task_struct *p kernel/sched/deadline.c:2234:23: sparse: got struct task_struct [noderef] <asn:4> *curr kernel/sched/deadline.c:2236:44: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct sched_dl_entity *b @@ got struct sched_dl_entity [noderef] <asn:4> * @@ kernel/sched/deadline.c:2236:44: sparse: expected struct sched_dl_entity *b kernel/sched/deadline.c:2236:44: sparse: got struct sched_dl_entity [noderef] <asn:4> * kernel/sched/deadline.c:2396:22: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/deadline.c:2396:22: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/deadline.c:2396:22: sparse: struct task_struct * kernel/sched/deadline.c:2415:46: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/deadline.c:2415:46: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/deadline.c:2415:46: sparse: struct task_struct * kernel/sched/sched.h:1699:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1699:25: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/sched.h:1699:25: sparse: struct task_struct * kernel/sched/sched.h:1699:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1699:25: sparse: struct task_struct [noderef] <asn:4> * kernel/sched/sched.h:1699:25: sparse: struct task_struct * vim +/dl_task_offline_migration +25 arch/x86/include/asm/jump_label.h 2671c3e4fe2a34b Andy Lutomirski 2015-11-12 22 11276d5306b8e5b Peter Zijlstra 2015-07-24 23 static __always_inline bool arch_static_branch(struct static_key *key, bool branch) d430d3d7e646eb1 Jason Baron 2011-03-16 24 { e769742d35841a8 Ingo Molnar 2018-12-19 @25 asm_volatile_goto("1:" e769742d35841a8 Ingo Molnar 2018-12-19 26 ".byte " __stringify(STATIC_KEY_INIT_NOP) "\n\t" e769742d35841a8 Ingo Molnar 2018-12-19 27 ".pushsection __jump_table, \"aw\" \n\t" e769742d35841a8 Ingo Molnar 2018-12-19 28 _ASM_ALIGN "\n\t" e769742d35841a8 Ingo Molnar 2018-12-19 29 ".long 1b - ., %l[l_yes] - . \n\t" e769742d35841a8 Ingo Molnar 2018-12-19 30 _ASM_PTR "%c0 + %c1 - .\n\t" e769742d35841a8 Ingo Molnar 2018-12-19 31 ".popsection \n\t" d420acd816c07c7 Peter Zijlstra 2015-08-12 32 : : "i" (key), "i" (branch) : : l_yes); e769742d35841a8 Ingo Molnar 2018-12-19 33 11276d5306b8e5b Peter Zijlstra 2015-07-24 34 return false; 11276d5306b8e5b Peter Zijlstra 2015-07-24 35 l_yes: 11276d5306b8e5b Peter Zijlstra 2015-07-24 36 return true; 11276d5306b8e5b Peter Zijlstra 2015-07-24 37 } 11276d5306b8e5b Peter Zijlstra 2015-07-24 38 :::::: The code at line 25 was first introduced by commit :::::: e769742d35841a8198dd6af94e2931083abdee08 Revert "x86/jump-labels: Macrofy inline assembly code to work around GCC inlining bugs" :::::: TO: Ingo Molnar <mingo(a)kernel.org&gt; :::::: CC: Ingo Molnar <mingo(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org