Hi Steven, I love your patch! Perhaps something to improve: [auto build test WARNING on tip/perf/core] [also build test WARNING on linux/master linus/master v5.11-rc6 next-20210125] [cannot apply to hnaz-linux-mm/master] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Steven-Rostedt/tracepoints-Do-not-punish-non-static-call-users/20210205-032217 base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 32451614da2a9cf4296f90d3606ac77814fb519d config: powerpc-randconfig-r023-20210205 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install powerpc cross compiling tool for clang build # apt-get install binutils-powerpc-linux-gnu # https://github.com/0day-ci/linux/commit/6458987cbf8a57376cd608aa4a066a2e86850cc5 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Steven-Rostedt/tracepoints-Do-not-punish-non-static-call-users/20210205-032217 git checkout 6458987cbf8a57376cd608aa4a066a2e86850cc5 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:121:1: note: expanded from here __do_outl ^ arch/powerpc/include/asm/io.h:537:62: note: expanded from macro '__do_outl' #define __do_outl(val, port) writel(val,(PCI_IO_ADDR)_IO_BASE+port); ~~~~~~~~~~~~~~~~~~~~~^ In file included from drivers/mtd/devices/docg3.c:15: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:619: arch/powerpc/include/asm/io-defs.h:43:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(insb, (unsigned long p, void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:135:1: note: expanded from here __do_insb ^ arch/powerpc/include/asm/io.h:556:56: note: expanded from macro '__do_insb' #define __do_insb(p, b, n) readsb((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from drivers/mtd/devices/docg3.c:15: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:619: arch/powerpc/include/asm/io-defs.h:45:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(insw, (unsigned long p, void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:137:1: note: expanded from here __do_insw ^ arch/powerpc/include/asm/io.h:557:56: note: expanded from macro '__do_insw' #define __do_insw(p, b, n) readsw((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from drivers/mtd/devices/docg3.c:15: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:619: arch/powerpc/include/asm/io-defs.h:47:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(insl, (unsigned long p, void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:139:1: note: expanded from here __do_insl ^ arch/powerpc/include/asm/io.h:558:56: note: expanded from macro '__do_insl' #define __do_insl(p, b, n) readsl((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from drivers/mtd/devices/docg3.c:15: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:619: arch/powerpc/include/asm/io-defs.h:49:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsb, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:141:1: note: expanded from here __do_outsb ^ arch/powerpc/include/asm/io.h:559:58: note: expanded from macro '__do_outsb' #define __do_outsb(p, b, n) writesb((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from drivers/mtd/devices/docg3.c:15: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:619: arch/powerpc/include/asm/io-defs.h:51:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsw, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:143:1: note: expanded from here __do_outsw ^ arch/powerpc/include/asm/io.h:560:58: note: expanded from macro '__do_outsw' #define __do_outsw(p, b, n) writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from drivers/mtd/devices/docg3.c:15: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:619: arch/powerpc/include/asm/io-defs.h:53:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:145:1: note: expanded from here __do_outsl ^ arch/powerpc/include/asm/io.h:561:58: note: expanded from macro '__do_outsl' #define __do_outsl(p, b, n) writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from drivers/mtd/devices/docg3.c:27: >> drivers/mtd/devices/docg3.h:319:1: warning: variable '__data' is uninitialized when used here [-Wuninitialized] TRACE_EVENT(docg3_io, ^~~~~~~~~~~~~~~~~~~~~ include/linux/tracepoint.h:550:2: note: expanded from macro 'TRACE_EVENT' DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/tracepoint.h:417:11: note: expanded from macro 'DECLARE_TRACE' PARAMS(__data, args)) ^~~~~~ include/linux/tracepoint.h:97:25: note: expanded from macro 'PARAMS' #define PARAMS(args...) args ^~~~ note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/tracepoint.h:201:33: note: expanded from macro '__DO_TRACE' __DO_TRACE_CALL(name, TP_ARGS(args)); \ ^~~~ include/linux/tracepoint.h:138:26: note: expanded from macro 'TP_ARGS' #define TP_ARGS(args...) args ^~~~ include/linux/tracepoint.h:166:56: note: expanded from macro '__DO_TRACE_CALL' #define __DO_TRACE_CALL(name, args) __traceiter_##name(args) ^~~~ drivers/mtd/devices/docg3.h:319:1: note: variable '__data' is declared here include/linux/tracepoint.h:550:2: note: expanded from macro 'TRACE_EVENT' DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) ^ include/linux/tracepoint.h:414:2: note: expanded from macro 'DECLARE_TRACE' __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \ ^ include/linux/tracepoint.h:244:4: note: expanded from macro '__DECLARE_TRACE' __DO_TRACE(name, \ ^ include/linux/tracepoint.h:181:3: note: expanded from macro '__DO_TRACE' void *__data; \ ^ In file included from drivers/mtd/devices/docg3.c:27: In file included from drivers/mtd/devices/docg3.h:343: include/trace/define_trace.h:95:10: fatal error: './docg3.h' file not found #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/define_trace.h:90:32: note: expanded from macro 'TRACE_INCLUDE' # define TRACE_INCLUDE(system) __TRACE_INCLUDE(system) ^~~~~~~~~~~~~~~~~~~~~~~ include/trace/define_trace.h:87:34: note: expanded from macro '__TRACE_INCLUDE' # define __TRACE_INCLUDE(system) __stringify(TRACE_INCLUDE_PATH/system.h) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/stringify.h:10:27: note: expanded from macro '__stringify' #define __stringify(x...) __stringify_1(x) ^~~~~~~~~~~~~~~~ include/linux/stringify.h:9:29: note: expanded from macro '__stringify_1' #define __stringify_1(x...) #x ^~ <scratch space>:18:1: note: expanded from here "./docg3.h" ^~~~~~~~~~~ 13 warnings and 1 error generated. -- ^ arch/powerpc/include/asm/io.h:556:56: note: expanded from macro '__do_insb' #define __do_insb(p, b, n) readsb((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from samples/ftrace/sample-trace-array.c:5: In file included from include/linux/trace_events.h:9: In file included from include/linux/hardirq.h:10: In file included from arch/powerpc/include/asm/hardirq.h:6: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:619: arch/powerpc/include/asm/io-defs.h:45:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(insw, (unsigned long p, void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:209:1: note: expanded from here __do_insw ^ arch/powerpc/include/asm/io.h:557:56: note: expanded from macro '__do_insw' #define __do_insw(p, b, n) readsw((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from samples/ftrace/sample-trace-array.c:5: In file included from include/linux/trace_events.h:9: In file included from include/linux/hardirq.h:10: In file included from arch/powerpc/include/asm/hardirq.h:6: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:619: arch/powerpc/include/asm/io-defs.h:47:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(insl, (unsigned long p, void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:211:1: note: expanded from here __do_insl ^ arch/powerpc/include/asm/io.h:558:56: note: expanded from macro '__do_insl' #define __do_insl(p, b, n) readsl((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from samples/ftrace/sample-trace-array.c:5: In file included from include/linux/trace_events.h:9: In file included from include/linux/hardirq.h:10: In file included from arch/powerpc/include/asm/hardirq.h:6: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:619: arch/powerpc/include/asm/io-defs.h:49:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsb, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:213:1: note: expanded from here __do_outsb ^ arch/powerpc/include/asm/io.h:559:58: note: expanded from macro '__do_outsb' #define __do_outsb(p, b, n) writesb((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from samples/ftrace/sample-trace-array.c:5: In file included from include/linux/trace_events.h:9: In file included from include/linux/hardirq.h:10: In file included from arch/powerpc/include/asm/hardirq.h:6: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:619: arch/powerpc/include/asm/io-defs.h:51:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsw, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:215:1: note: expanded from here __do_outsw ^ arch/powerpc/include/asm/io.h:560:58: note: expanded from macro '__do_outsw' #define __do_outsw(p, b, n) writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from samples/ftrace/sample-trace-array.c:5: In file included from include/linux/trace_events.h:9: In file included from include/linux/hardirq.h:10: In file included from arch/powerpc/include/asm/hardirq.h:6: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:619: arch/powerpc/include/asm/io-defs.h:53:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:217:1: note: expanded from here __do_outsl ^ arch/powerpc/include/asm/io.h:561:58: note: expanded from macro '__do_outsl' #define __do_outsl(p, b, n) writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from samples/ftrace/sample-trace-array.c:18: >> samples/ftrace/sample-trace-array.h:60:1: warning: variable '__data' is uninitialized when used here [-Wuninitialized] TRACE_EVENT(sample_event, ^~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/tracepoint.h:550:2: note: expanded from macro 'TRACE_EVENT' DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/tracepoint.h:417:11: note: expanded from macro 'DECLARE_TRACE' PARAMS(__data, args)) ^~~~~~ include/linux/tracepoint.h:97:25: note: expanded from macro 'PARAMS' #define PARAMS(args...) args ^~~~ note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/tracepoint.h:201:33: note: expanded from macro '__DO_TRACE' __DO_TRACE_CALL(name, TP_ARGS(args)); \ ^~~~ include/linux/tracepoint.h:138:26: note: expanded from macro 'TP_ARGS' #define TP_ARGS(args...) args ^~~~ include/linux/tracepoint.h:166:56: note: expanded from macro '__DO_TRACE_CALL' #define __DO_TRACE_CALL(name, args) __traceiter_##name(args) ^~~~ samples/ftrace/sample-trace-array.h:60:1: note: variable '__data' is declared here include/linux/tracepoint.h:550:2: note: expanded from macro 'TRACE_EVENT' DECLARE_TRACE(name, PARAMS(proto), PARAMS(args)) ^ include/linux/tracepoint.h:414:2: note: expanded from macro 'DECLARE_TRACE' __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \ ^ include/linux/tracepoint.h:244:4: note: expanded from macro '__DECLARE_TRACE' __DO_TRACE(name, \ ^ include/linux/tracepoint.h:181:3: note: expanded from macro '__DO_TRACE' void *__data; \ ^ In file included from samples/ftrace/sample-trace-array.c:18: In file included from samples/ftrace/sample-trace-array.h:84: include/trace/define_trace.h:95:10: fatal error: './sample-trace-array.h' file not found #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/trace/define_trace.h:90:32: note: expanded from macro 'TRACE_INCLUDE' # define TRACE_INCLUDE(system) __TRACE_INCLUDE(system) ^~~~~~~~~~~~~~~~~~~~~~~ include/trace/define_trace.h:87:34: note: expanded from macro '__TRACE_INCLUDE' # define __TRACE_INCLUDE(system) __stringify(TRACE_INCLUDE_PATH/system.h) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/stringify.h:10:27: note: expanded from macro '__stringify' #define __stringify(x...) __stringify_1(x) ^~~~~~~~~~~~~~~~ include/linux/stringify.h:9:29: note: expanded from macro '__stringify_1' #define __stringify_1(x...) #x ^~ <scratch space>:165:1: note: expanded from here "./sample-trace-array.h" ^~~~~~~~~~~~~~~~~~~~~~~~ 13 warnings and 1 error generated. .. vim +/__data +319 drivers/mtd/devices/docg3.h efa2ca73a7bc1a Robert Jarzmik 2011-10-05 318 efa2ca73a7bc1a Robert Jarzmik 2011-10-05 @319 TRACE_EVENT(docg3_io, efa2ca73a7bc1a Robert Jarzmik 2011-10-05 320 TP_PROTO(int op, int width, u16 reg, int val), efa2ca73a7bc1a Robert Jarzmik 2011-10-05 321 TP_ARGS(op, width, reg, val), efa2ca73a7bc1a Robert Jarzmik 2011-10-05 322 TP_STRUCT__entry( efa2ca73a7bc1a Robert Jarzmik 2011-10-05 323 __field(int, op) efa2ca73a7bc1a Robert Jarzmik 2011-10-05 324 __field(unsigned char, width) efa2ca73a7bc1a Robert Jarzmik 2011-10-05 325 __field(u16, reg) efa2ca73a7bc1a Robert Jarzmik 2011-10-05 326 __field(int, val)), efa2ca73a7bc1a Robert Jarzmik 2011-10-05 327 TP_fast_assign( efa2ca73a7bc1a Robert Jarzmik 2011-10-05 328 __entry->op = op; efa2ca73a7bc1a Robert Jarzmik 2011-10-05 329 __entry->width = width; efa2ca73a7bc1a Robert Jarzmik 2011-10-05 330 __entry->reg = reg; efa2ca73a7bc1a Robert Jarzmik 2011-10-05 331 __entry->val = val;), efa2ca73a7bc1a Robert Jarzmik 2011-10-05 332 TP_printk("docg3: %s%02d reg=%04x, val=%04x", efa2ca73a7bc1a Robert Jarzmik 2011-10-05 333 __entry->op ? "write" : "read", __entry->width, efa2ca73a7bc1a Robert Jarzmik 2011-10-05 334 __entry->reg, __entry->val) efa2ca73a7bc1a Robert Jarzmik 2011-10-05 335 ); efa2ca73a7bc1a Robert Jarzmik 2011-10-05 336 #endif efa2ca73a7bc1a Robert Jarzmik 2011-10-05 337 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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