Hi Oscar, kernel test robot noticed the following build errors: [auto build test ERROR on linus/master] [also build test ERROR on v6.3-rc7] [cannot apply to akpm-mm/mm-everything next-20230421] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Oscar-Salvador/lib-stackdepot-Add-a-refcount-field-in-stack_record/20230421-181709 base: linus/master patch link: https://lore.kernel.org/r/20230421101415.5734-3-osalvador%40suse.de patch subject: [PATCH v4 2/3] mm, page_owner: Add page_owner_stacks file to print out only stacks and their counte config: powerpc-randconfig-r026-20230421 (https://download.01.org/0day-ci/archive/20230422/202304220715.syaqgRUa-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 437b7602e4a998220871de78afcb020b9c14a661) 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/intel-lab-lkp/linux/commit/6c6dfc43015e1939f433f4371d33418ab4d03411 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Oscar-Salvador/lib-stackdepot-Add-a-refcount-field-in-stack_record/20230421-181709 git checkout 6c6dfc43015e1939f433f4371d33418ab4d03411 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash arch/powerpc/kernel/ kernel/dma/ lib/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202304220715.syaqgRUa-lkp@xxxxxxxxx/ All error/warnings (new ones prefixed by >>): In file included from lib/show_mem.c:8: In file included from include/linux/mm.h:22: In file included from include/linux/page_ext.h:7: >> include/linux/stackdepot.h:120:26: warning: declaration of 'struct seq_file' will not be visible outside of this function [-Wvisibility] void *stack_start(struct seq_file *m, loff_t *ppos); ^ include/linux/stackdepot.h:121:25: warning: declaration of 'struct seq_file' will not be visible outside of this function [-Wvisibility] void *stack_next(struct seq_file *m, void *v, loff_t *ppos); ^ include/linux/stackdepot.h:122:24: warning: declaration of 'struct seq_file' will not be visible outside of this function [-Wvisibility] int stack_print(struct seq_file *m, void *v); ^ 3 warnings generated. -- In file included from lib/scatterlist.c:9: In file included from include/linux/scatterlist.h:8: In file included from include/linux/mm.h:22: In file included from include/linux/page_ext.h:7: >> include/linux/stackdepot.h:120:26: warning: declaration of 'struct seq_file' will not be visible outside of this function [-Wvisibility] void *stack_start(struct seq_file *m, loff_t *ppos); ^ include/linux/stackdepot.h:121:25: warning: declaration of 'struct seq_file' will not be visible outside of this function [-Wvisibility] void *stack_next(struct seq_file *m, void *v, loff_t *ppos); ^ include/linux/stackdepot.h:122:24: warning: declaration of 'struct seq_file' will not be visible outside of this function [-Wvisibility] int stack_print(struct seq_file *m, void *v); ^ In file included from lib/scatterlist.c:9: In file included from include/linux/scatterlist.h:9: In file included from arch/powerpc/include/asm/io.h:640: 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:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:214:1: note: expanded from here __do_insb ^ arch/powerpc/include/asm/io.h:577:56: 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 lib/scatterlist.c:9: In file included from include/linux/scatterlist.h:9: In file included from arch/powerpc/include/asm/io.h:640: 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:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:216:1: note: expanded from here __do_insw ^ arch/powerpc/include/asm/io.h:578:56: 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 lib/scatterlist.c:9: In file included from include/linux/scatterlist.h:9: In file included from arch/powerpc/include/asm/io.h:640: 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:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:218:1: note: expanded from here __do_insl ^ arch/powerpc/include/asm/io.h:579:56: 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 lib/scatterlist.c:9: In file included from include/linux/scatterlist.h:9: In file included from arch/powerpc/include/asm/io.h:640: 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:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:220:1: note: expanded from here __do_outsb ^ arch/powerpc/include/asm/io.h:580:58: 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 lib/scatterlist.c:9: In file included from include/linux/scatterlist.h:9: In file included from arch/powerpc/include/asm/io.h:640: 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:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:222:1: note: expanded from here __do_outsw ^ arch/powerpc/include/asm/io.h:581:58: 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 lib/scatterlist.c:9: In file included from include/linux/scatterlist.h:9: In file included from arch/powerpc/include/asm/io.h:640: 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:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:224:1: note: expanded from here __do_outsl ^ arch/powerpc/include/asm/io.h:582:58: note: expanded from macro '__do_outsl' #define __do_outsl(p, b, n) writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ 9 warnings generated. -- In file included from lib/stackdepot.c:20: In file included from include/linux/mm.h:22: In file included from include/linux/page_ext.h:7: >> include/linux/stackdepot.h:120:26: warning: declaration of 'struct seq_file' will not be visible outside of this function [-Wvisibility] void *stack_start(struct seq_file *m, loff_t *ppos); ^ include/linux/stackdepot.h:121:25: warning: declaration of 'struct seq_file' will not be visible outside of this function [-Wvisibility] void *stack_next(struct seq_file *m, void *v, loff_t *ppos); ^ include/linux/stackdepot.h:122:24: warning: declaration of 'struct seq_file' will not be visible outside of this function [-Wvisibility] int stack_print(struct seq_file *m, void *v); ^ In file included from lib/stackdepot.c:29: In file included from include/linux/memblock.h:13: In file included from arch/powerpc/include/asm/dma.h:22: In file included from arch/powerpc/include/asm/io.h:640: 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:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:217:1: note: expanded from here __do_insb ^ arch/powerpc/include/asm/io.h:577:56: 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 lib/stackdepot.c:29: In file included from include/linux/memblock.h:13: In file included from arch/powerpc/include/asm/dma.h:22: In file included from arch/powerpc/include/asm/io.h:640: 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:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:219:1: note: expanded from here __do_insw ^ arch/powerpc/include/asm/io.h:578:56: 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 lib/stackdepot.c:29: In file included from include/linux/memblock.h:13: In file included from arch/powerpc/include/asm/dma.h:22: In file included from arch/powerpc/include/asm/io.h:640: 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:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:221:1: note: expanded from here __do_insl ^ arch/powerpc/include/asm/io.h:579:56: 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 lib/stackdepot.c:29: In file included from include/linux/memblock.h:13: In file included from arch/powerpc/include/asm/dma.h:22: In file included from arch/powerpc/include/asm/io.h:640: 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:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:223:1: note: expanded from here __do_outsb ^ arch/powerpc/include/asm/io.h:580:58: 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 lib/stackdepot.c:29: In file included from include/linux/memblock.h:13: In file included from arch/powerpc/include/asm/dma.h:22: In file included from arch/powerpc/include/asm/io.h:640: 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:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:225:1: note: expanded from here __do_outsw ^ arch/powerpc/include/asm/io.h:581:58: 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 lib/stackdepot.c:29: In file included from include/linux/memblock.h:13: In file included from arch/powerpc/include/asm/dma.h:22: In file included from arch/powerpc/include/asm/io.h:640: 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:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:227:1: note: expanded from here __do_outsl ^ arch/powerpc/include/asm/io.h:582:58: note: expanded from macro '__do_outsl' #define __do_outsl(p, b, n) writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ >> lib/stackdepot.c:505:7: error: conflicting types for 'stack_start' void *stack_start(struct seq_file *m, loff_t *ppos) ^ include/linux/stackdepot.h:120:7: note: previous declaration is here void *stack_start(struct seq_file *m, loff_t *ppos); ^ >> lib/stackdepot.c:523:7: error: conflicting types for 'stack_next' void *stack_next(struct seq_file *m, void *v, loff_t *ppos) ^ include/linux/stackdepot.h:121:7: note: previous declaration is here void *stack_next(struct seq_file *m, void *v, loff_t *ppos); ^ >> lib/stackdepot.c:552:5: error: conflicting types for 'stack_print' int stack_print(struct seq_file *m, void *v) ^ include/linux/stackdepot.h:122:5: note: previous declaration is here int stack_print(struct seq_file *m, void *v); ^ 9 warnings and 3 errors generated. -- In file included from arch/powerpc/kernel/align.c:17: In file included from include/linux/mm.h:22: In file included from include/linux/page_ext.h:7: >> include/linux/stackdepot.h:120:26: error: declaration of 'struct seq_file' will not be visible outside of this function [-Werror,-Wvisibility] void *stack_start(struct seq_file *m, loff_t *ppos); ^ include/linux/stackdepot.h:121:25: error: declaration of 'struct seq_file' will not be visible outside of this function [-Werror,-Wvisibility] void *stack_next(struct seq_file *m, void *v, loff_t *ppos); ^ include/linux/stackdepot.h:122:24: error: declaration of 'struct seq_file' will not be visible outside of this function [-Werror,-Wvisibility] int stack_print(struct seq_file *m, void *v); ^ In file included from arch/powerpc/kernel/align.c:22: In file included from arch/powerpc/include/asm/emulated_ops.h:10: In file included from include/linux/perf_event.h:52: In file included from include/linux/ftrace.h:10: In file included from include/linux/trace_recursion.h:5: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: 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:640: arch/powerpc/include/asm/io-defs.h:43:1: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(insb, (unsigned long p, void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:220:1: note: expanded from here __do_insb ^ arch/powerpc/include/asm/io.h:577:56: 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 arch/powerpc/kernel/align.c:22: In file included from arch/powerpc/include/asm/emulated_ops.h:10: In file included from include/linux/perf_event.h:52: In file included from include/linux/ftrace.h:10: In file included from include/linux/trace_recursion.h:5: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: 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:640: arch/powerpc/include/asm/io-defs.h:45:1: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(insw, (unsigned long p, void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:222:1: note: expanded from here __do_insw ^ arch/powerpc/include/asm/io.h:578:56: 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 arch/powerpc/kernel/align.c:22: In file included from arch/powerpc/include/asm/emulated_ops.h:10: In file included from include/linux/perf_event.h:52: In file included from include/linux/ftrace.h:10: In file included from include/linux/trace_recursion.h:5: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: 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:640: arch/powerpc/include/asm/io-defs.h:47:1: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(insl, (unsigned long p, void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:224:1: note: expanded from here __do_insl ^ arch/powerpc/include/asm/io.h:579:56: 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 arch/powerpc/kernel/align.c:22: In file included from arch/powerpc/include/asm/emulated_ops.h:10: In file included from include/linux/perf_event.h:52: In file included from include/linux/ftrace.h:10: In file included from include/linux/trace_recursion.h:5: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: 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:640: arch/powerpc/include/asm/io-defs.h:49:1: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsb, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:637:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:226:1: note: expanded from here __do_outsb ^ arch/powerpc/include/asm/io.h:580:58: note: expanded from macro '__do_outsb' #define __do_outsb(p, b, n) writesb((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ vim +/stack_start +505 lib/stackdepot.c 503 504 #ifdef CONFIG_PAGE_OWNER > 505 void *stack_start(struct seq_file *m, loff_t *ppos) 506 { 507 unsigned long *table = m->private; 508 struct stack_record **stacks, *stack; 509 510 /* First time */ 511 if (*ppos == 0) 512 *table = 0; 513 514 if (*ppos == -1UL) 515 return NULL; 516 517 stacks = &stack_table[*table]; 518 stack = (struct stack_record *)stacks; 519 520 return stack; 521 } 522 > 523 void *stack_next(struct seq_file *m, void *v, loff_t *ppos) 524 { 525 unsigned long *table = m->private; 526 unsigned long nr_table = *table; 527 struct stack_record *next = NULL, *stack = v, **stacks; 528 unsigned long stack_table_entries = stack_hash_mask + 1; 529 530 if (!stack) { 531 new_table: 532 /* New table */ 533 nr_table++; 534 if (nr_table >= stack_table_entries) 535 goto out; 536 stacks = &stack_table[nr_table]; 537 stack = (struct stack_record *)stacks; 538 next = stack; 539 } else { 540 next = stack->next; 541 } 542 543 if (!next) 544 goto new_table; 545 546 out: 547 *table = nr_table; 548 *ppos = (nr_table >= stack_table_entries) ? -1UL : *ppos + 1; 549 return next; 550 } 551 > 552 int stack_print(struct seq_file *m, void *v) 553 { 554 char *buf; 555 int ret = 0; 556 struct stack_record *stack =v; 557 558 if (!stack->size || stack->size < 0 || 559 stack->size > PAGE_SIZE || stack->handle.valid != 1 || 560 refcount_read(&stack->count) < 1) 561 return 0; 562 563 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); 564 ret += stack_trace_snprint(buf, PAGE_SIZE, stack->entries, stack->size, 0); 565 scnprintf(buf + ret, PAGE_SIZE - ret, "stack count: %d\n\n", 566 refcount_read(&stack->count)); 567 seq_printf(m, buf); 568 seq_puts(m, "\n\n"); 569 kfree(buf); 570 571 return 0; 572 } 573 #endif 574 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
