tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.4 head: 08f8d1398111d6717028218f58d8c7e228ef4d15 commit: e76f44b723928dfde31f8b46af3fae56bfd0d508 [32/59] FROMLIST: sched: Core-wide rq->lock config: x86_64-randconfig-s022-20200818 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-180-g49f7e13a-dirty git checkout e76f44b723928dfde31f8b46af3fae56bfd0d508 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 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/fair.c:5377:1: sparse: sparse: symbol '__pcpu_scope_load_balance_mask' was not declared. Should it be static? kernel/sched/fair.c:5378:1: sparse: sparse: symbol '__pcpu_scope_select_idle_mask' was not declared. Should it be static? kernel/sched/fair.c:6408:20: 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/fair.c:6408:20: sparse: expected struct sched_domain *[assigned] sd kernel/sched/fair.c:6408:20: sparse: got struct sched_domain [noderef] <asn:4> *parent kernel/sched/fair.c:6555:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] tmp @@ got struct sched_domain [noderef] <asn:4> *parent @@ kernel/sched/fair.c:6555:9: sparse: expected struct sched_domain *[assigned] tmp kernel/sched/fair.c:6555:9: sparse: got struct sched_domain [noderef] <asn:4> *parent kernel/sched/fair.c:7943:40: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sched_domain *child @@ got struct sched_domain [noderef] <asn:4> *child @@ kernel/sched/fair.c:7943:40: sparse: expected struct sched_domain *child kernel/sched/fair.c:7943:40: sparse: got struct sched_domain [noderef] <asn:4> *child kernel/sched/fair.c:9336:9: 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/fair.c:9336:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/fair.c:9336:9: sparse: got struct sched_domain [noderef] <asn:4> *parent kernel/sched/fair.c:8995:44: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sched_domain *sd_parent @@ got struct sched_domain [noderef] <asn:4> *parent @@ kernel/sched/fair.c:8995:44: sparse: expected struct sched_domain *sd_parent kernel/sched/fair.c:8995:44: sparse: got struct sched_domain [noderef] <asn:4> *parent kernel/sched/fair.c:9414:9: 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/fair.c:9414:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/fair.c:9414:9: sparse: got struct sched_domain [noderef] <asn:4> *parent kernel/sched/fair.c:10013:9: 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/fair.c:10013:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/fair.c:10013:9: sparse: got struct sched_domain [noderef] <asn:4> *parent kernel/sched/fair.c:5796:28: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] <asn:4> *child @@ kernel/sched/fair.c:5796:28: sparse: expected struct sched_domain *sd kernel/sched/fair.c:5796:28: sparse: got struct sched_domain [noderef] <asn:4> *child kernel/sched/fair.c:5802:28: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] <asn:4> *child @@ kernel/sched/fair.c:5802:28: sparse: expected struct sched_domain *sd kernel/sched/fair.c:5802:28: sparse: got struct sched_domain [noderef] <asn:4> *child kernel/sched/fair.c:5809:28: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] <asn:4> *child @@ kernel/sched/fair.c:5809:28: sparse: expected struct sched_domain *sd kernel/sched/fair.c:5809:28: sparse: got struct sched_domain [noderef] <asn:4> *child kernel/sched/fair.c:5817:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] tmp @@ got struct sched_domain [noderef] <asn:4> *parent @@ kernel/sched/fair.c:5817:17: sparse: expected struct sched_domain *[assigned] tmp kernel/sched/fair.c:5817:17: sparse: got struct sched_domain [noderef] <asn:4> *parent kernel/sched/fair.c:7985:41: sparse: sparse: dereference of noderef expression kernel/sched/fair.c:8363:45: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sched_domain *child @@ got struct sched_domain [noderef] <asn:4> *child @@ kernel/sched/fair.c:8363:45: sparse: expected struct sched_domain *child kernel/sched/fair.c:8363:45: sparse: got struct sched_domain [noderef] <asn:4> *child kernel/sched/fair.c:9463:1: sparse: sparse: context imbalance in 'rebalance_domains' - different lock contexts for basic block kernel/sched/fair.c: note: in included file (through include/linux/jump_label.h, include/linux/static_key.h, arch/x86/include/asm/nospec-branch.h, ...): git remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel git fetch --no-tags chrome-os chromeos-5.4 git checkout e76f44b723928dfde31f8b46af3fae56bfd0d508 vim +/nohz_newidle_balance +25 arch/x86/include/asm/jump_label.h 2671c3e4fe2a34 Andy Lutomirski 2015-11-12 22 11276d5306b8e5 Peter Zijlstra 2015-07-24 23 static __always_inline bool arch_static_branch(struct static_key *key, bool branch) d430d3d7e646eb Jason Baron 2011-03-16 24 { e769742d35841a Ingo Molnar 2018-12-19 @25 asm_volatile_goto("1:" e769742d35841a Ingo Molnar 2018-12-19 26 ".byte " __stringify(STATIC_KEY_INIT_NOP) "\n\t" e769742d35841a Ingo Molnar 2018-12-19 27 ".pushsection __jump_table, \"aw\" \n\t" e769742d35841a Ingo Molnar 2018-12-19 28 _ASM_ALIGN "\n\t" e769742d35841a Ingo Molnar 2018-12-19 29 ".long 1b - ., %l[l_yes] - . \n\t" e769742d35841a Ingo Molnar 2018-12-19 30 _ASM_PTR "%c0 + %c1 - .\n\t" e769742d35841a Ingo Molnar 2018-12-19 31 ".popsection \n\t" d420acd816c07c Peter Zijlstra 2015-08-12 32 : : "i" (key), "i" (branch) : : l_yes); e769742d35841a Ingo Molnar 2018-12-19 33 11276d5306b8e5 Peter Zijlstra 2015-07-24 34 return false; 11276d5306b8e5 Peter Zijlstra 2015-07-24 35 l_yes: 11276d5306b8e5 Peter Zijlstra 2015-07-24 36 return true; 11276d5306b8e5 Peter Zijlstra 2015-07-24 37 } 11276d5306b8e5 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