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Date: Sat, 22 Apr 2023 08:11:07 +0800
From: kernel test robot <lkp@...el.com>
To: Oscar Salvador <osalvador@...e.de>,
Andrew Morton <akpm@...ux-foundation.org>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
Linux Memory Management List <linux-mm@...ck.org>,
linux-kernel@...r.kernel.org, Michal Hocko <mhocko@...e.com>,
Vlastimil Babka <vbabka@...e.cz>,
Eric Dumazet <edumazet@...gle.com>,
Waiman Long <longman@...hat.com>,
Suren Baghdasaryan <surenb@...gle.com>,
Marco Elver <elver@...gle.com>,
Andrey Konovalov <andreyknvl@...il.com>,
Alexander Potapenko <glider@...gle.com>,
Oscar Salvador <osalvador@...e.de>
Subject: Re: [PATCH v4 2/3] mm, page_owner: Add page_owner_stacks file to
print out only stacks and their counte
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@intel.com/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@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304220715.syaqgRUa-lkp@intel.com/
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
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