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Message-ID: <202209020341.R77p3KTI-lkp@intel.com>
Date: Fri, 2 Sep 2022 03:29:30 +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, kbuild-all@...ts.01.org,
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>,
Oscar Salvador <osalvador@...e.de>
Subject: Re: [PATCH 2/3] mm, page_owner: Add page_owner_stacks file to print
out only stacks and their counter
Hi Oscar,
I love your patch! Yet something to improve:
[auto build test ERROR on linus/master]
[also build test ERROR on v6.0-rc3]
[cannot apply to akpm-mm/mm-everything next-20220901]
[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/page_owner-print-stacks-and-their-counter/20220901-124408
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git c5e4d5e99162ba8025d58a3af7ad103f155d2df7
config: s390-buildonly-randconfig-r001-20220901
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project c55b41d5199d2394dd6cdb8f52180d8b81d809d4)
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 s390 cross compiling tool for clang build
# apt-get install binutils-s390x-linux-gnu
# https://github.com/intel-lab-lkp/linux/commit/18d3054fb57a70676be763adab8c8881a1baa504
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Oscar-Salvador/page_owner-print-stacks-and-their-counter/20220901-124408
git checkout 18d3054fb57a70676be763adab8c8881a1baa504
# 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=s390 SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
In file included from lib/stackdepot.c:34:
In file included from include/linux/memblock.h:13:
In file included from arch/s390/include/asm/dma.h:5:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
#define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
^
In file included from lib/stackdepot.c:34:
In file included from include/linux/memblock.h:13:
In file included from arch/s390/include/asm/dma.h:5:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
#define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
^
In file included from lib/stackdepot.c:34:
In file included from include/linux/memblock.h:13:
In file included from arch/s390/include/asm/dma.h:5:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
>> lib/stackdepot.c:603:10: error: use of undeclared identifier 'STACK_HASH_SIZE'
if (i < STACK_HASH_SIZE)
^
12 warnings and 1 error generated.
vim +/STACK_HASH_SIZE +603 lib/stackdepot.c
568
569 int stack_depot_print_stacks_threshold(char *buf, size_t size, loff_t *pos,
570 unsigned long *last_stack)
571 {
572 struct stack_record *stack = NULL, *last;
573 struct stack_record **stacks;
574 int i = *pos, ret = 0;
575
576 /* Continue from the last week if we have one */
577 if (*last_stack) {
578 last = (struct stack_record *)*last_stack;
579 stack = last->next;
580 } else {
581 new_table:
582 stacks = &stack_table[i];
583 stack = (struct stack_record *)stacks;
584 }
585
586 for (; stack; stack = stack->next) {
587 if (!stack->size || stack->size < 0 ||
588 stack->size > size || stack->handle.valid != 1 ||
589 refcount_read(&stack->count) < 1)
590 continue;
591
592 ret += stack_trace_snprint(buf, size, stack->entries, stack->size, 0);
593 ret += scnprintf(buf + ret, size - ret, "stack count: %d\n\n",
594 refcount_read(&stack->count));
595 *last_stack = (unsigned long)stack;
596 return ret;
597 }
598
599 i++;
600 *pos = i;
601
602 /* Keep looking all tables for valid stacks */
> 603 if (i < STACK_HASH_SIZE)
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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