[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-ID: <202308221231.B7yBmSQV-lkp@intel.com>
Date: Tue, 22 Aug 2023 13:11:01 +0800
From: kernel test robot <lkp@...el.com>
To: Helge Deller <deller@....de>, linux-fsdevel@...r.kernel.org,
linux-kernel@...r.kernel.org, Andrei Vagin <avagin@...nvz.org>,
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-parisc@...r.kernel.org
Subject: Re: [PATCH] procfs: Fix /proc/self/maps output for 32-bit kernel and
compat tasks
Hi Helge,
kernel test robot noticed the following build errors:
[auto build test ERROR on linus/master]
[also build test ERROR on v6.5-rc7 next-20230821]
[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/Helge-Deller/procfs-Fix-proc-self-maps-output-for-32-bit-kernel-and-compat-tasks/20230821-100823
base: linus/master
patch link: https://lore.kernel.org/r/ZOCJltW%2FeufPUc%2BT%40p100
patch subject: [PATCH] procfs: Fix /proc/self/maps output for 32-bit kernel and compat tasks
config: x86_64-randconfig-013-20230821 (https://download.01.org/0day-ci/archive/20230822/202308221231.B7yBmSQV-lkp@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce: (https://download.01.org/0day-ci/archive/20230822/202308221231.B7yBmSQV-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202308221231.B7yBmSQV-lkp@intel.com/
All errors (new ones prefixed by >>):
>> fs/seq_file.c:765:16: error: call to undeclared function 'is_compat_task'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
if (v == 0 || is_compat_task())
^
1 error generated.
vim +/is_compat_task +765 fs/seq_file.c
737
738 /**
739 * seq_put_hex_ll - put a number in hexadecimal notation
740 * @m: seq_file identifying the buffer to which data should be written
741 * @delimiter: a string which is printed before the number
742 * @v: the number
743 * @width: a minimum field width
744 *
745 * seq_put_hex_ll(m, "", v, 8) is equal to seq_printf(m, "%08llx", v)
746 *
747 * This routine is very quick when you show lots of numbers.
748 * In usual cases, it will be better to use seq_printf(). It's easier to read.
749 */
750 void seq_put_hex_ll(struct seq_file *m, const char *delimiter,
751 unsigned long long v, unsigned int width)
752 {
753 unsigned int len;
754 int i;
755
756 if (delimiter && delimiter[0]) {
757 if (delimiter[1] == 0)
758 seq_putc(m, delimiter[0]);
759 else
760 seq_puts(m, delimiter);
761 }
762
763 #ifdef CONFIG_64BIT
764 /* If x is 0, the result of __builtin_clzll is undefined */
> 765 if (v == 0 || is_compat_task())
766 len = 1;
767 else
768 len = (sizeof(v) * 8 - __builtin_clzll(v) + 3) / 4;
769 #else
770 /* On 32-bit kernel always use provided width */
771 len = 1;
772 #endif
773
774 if (len < width)
775 len = width;
776
777 if (m->count + len > m->size) {
778 seq_set_overflow(m);
779 return;
780 }
781
782 for (i = len - 1; i >= 0; i--) {
783 m->buf[m->count + i] = hex_asc[0xf & v];
784 v = v >> 4;
785 }
786 m->count += len;
787 }
788
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Powered by blists - more mailing lists