tree: https://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git ftrace/core head: f9631ff0c019f4af10b7baa70464b620fa997938 commit: f9631ff0c019f4af10b7baa70464b620fa997938 [40/40] tracing: Offload eval map updates to a work queue config: i386-randconfig-s002-20201214 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-184-g1b896707-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git/c... git remote add trace https://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git git fetch --no-tags trace ftrace/core git checkout f9631ff0c019f4af10b7baa70464b620fa997938 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 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/trace/trace.c:382:28: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct trace_export **list @@ got struct trace_export [noderef] __rcu ** @@ kernel/trace/trace.c:382:28: sparse: expected struct trace_export **list kernel/trace/trace.c:382:28: sparse: got struct trace_export [noderef] __rcu ** kernel/trace/trace.c:396:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct trace_export **list @@ got struct trace_export [noderef] __rcu ** @@ kernel/trace/trace.c:396:33: sparse: expected struct trace_export **list kernel/trace/trace.c:396:33: sparse: got struct trace_export [noderef] __rcu ** kernel/trace/trace.c:2795:38: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct event_filter *filter @@ got struct event_filter [noderef] __rcu *filter @@ kernel/trace/trace.c:2795:38: sparse: expected struct event_filter *filter kernel/trace/trace.c:2795:38: sparse: got struct event_filter [noderef] __rcu *filter kernel/trace/trace.c:3133:46: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got struct trace_buffer_struct * @@ kernel/trace/trace.c:3133:46: sparse: expected void const [noderef] __percpu *__vpp_verify kernel/trace/trace.c:3133:46: sparse: got struct trace_buffer_struct * kernel/trace/trace.c:3149:9: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got int * @@ kernel/trace/trace.c:3149:9: sparse: expected void const [noderef] __percpu *__vpp_verify kernel/trace/trace.c:3149:9: sparse: got int * kernel/trace/trace.c:3149:9: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got int * @@ kernel/trace/trace.c:3149:9: sparse: expected void const [noderef] __percpu *__vpp_verify kernel/trace/trace.c:3149:9: sparse: got int * kernel/trace/trace.c:3159:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct trace_buffer_struct *buffers @@ got struct trace_buffer_struct [noderef] __percpu * @@ kernel/trace/trace.c:3159:17: sparse: expected struct trace_buffer_struct *buffers kernel/trace/trace.c:3159:17: sparse: got struct trace_buffer_struct [noderef] __percpu * kernel/trace/trace.c:336:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/trace/trace.c:336:9: sparse: struct trace_export [noderef] __rcu * kernel/trace/trace.c:336:9: sparse: struct trace_export * kernel/trace/trace.c:351:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/trace/trace.c:351:9: sparse: struct trace_export [noderef] __rcu * kernel/trace/trace.c:351:9: sparse: struct trace_export * 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