lkml.org 
[lkml]   [2022]   [Jan]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Subject[mingo-tip:sched/headers 203/2384] kernel/kcsan/permissive.h:31:26: error: no member named 'flags' in 'struct task_struct'
tree:   git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git sched/headers
head: 4c707c1c0de83967079b4e385012fa5b00e2cd11
commit: 762c0e5e35546dcaccb201e1e3dae69e34f7733b [203/2384] headers/deps: Move task_struct::flags to per_task()
config: x86_64-randconfig-c007 (https://download.01.org/0day-ci/archive/20220117/202201171545.dO2soyng-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c63a3175c2947e8c1a2d3bbe16a8586600705c54)
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
# https://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git/commit/?id=762c0e5e35546dcaccb201e1e3dae69e34f7733b
git remote add mingo-tip git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git
git fetch --no-tags mingo-tip sched/headers
git checkout 762c0e5e35546dcaccb201e1e3dae69e34f7733b
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

In file included from kernel/kcsan/core.c:25:
>> kernel/kcsan/permissive.h:31:26: error: no member named 'flags' in 'struct task_struct'
return ptr == &current->flags;
~~~~~~~ ^
1 error generated.


vim +31 kernel/kcsan/permissive.h

49f72d5358dd3c Marco Elver 2021-06-07 18
49f72d5358dd3c Marco Elver 2021-06-07 19 /*
49f72d5358dd3c Marco Elver 2021-06-07 20 * Access ignore rules based on address.
49f72d5358dd3c Marco Elver 2021-06-07 21 */
49f72d5358dd3c Marco Elver 2021-06-07 22 static __always_inline bool kcsan_ignore_address(const volatile void *ptr)
49f72d5358dd3c Marco Elver 2021-06-07 23 {
49f72d5358dd3c Marco Elver 2021-06-07 24 if (!IS_ENABLED(CONFIG_KCSAN_PERMISSIVE))
49f72d5358dd3c Marco Elver 2021-06-07 25 return false;
49f72d5358dd3c Marco Elver 2021-06-07 26
d8fd74d35a8d3c Marco Elver 2021-06-07 27 /*
d8fd74d35a8d3c Marco Elver 2021-06-07 28 * Data-racy bitops on current->flags are too common, ignore completely
d8fd74d35a8d3c Marco Elver 2021-06-07 29 * for now.
d8fd74d35a8d3c Marco Elver 2021-06-07 30 */
d8fd74d35a8d3c Marco Elver 2021-06-07 @31 return ptr == &current->flags;
49f72d5358dd3c Marco Elver 2021-06-07 32 }
49f72d5358dd3c Marco Elver 2021-06-07 33

:::::: The code at line 31 was first introduced by commit
:::::: d8fd74d35a8d3c602232e3238e916bda9d03d520 kcsan: permissive: Ignore data-racy 1-bit value changes

:::::: TO: Marco Elver <elver@google.com>
:::::: CC: Paul E. McKenney <paulmck@kernel.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

\
 
 \ /
  Last update: 2022-01-17 08:39    [W:0.059 / U:0.512 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site