tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2020.12.15b head: f895a17eec290b0038a6294d884a9cc92d7d6e80 commit: 7655dc620982c6505386efdaf975e6bde3c27afb [130/134] rcu-tasks: Use NULL pointer instead of empty show_rcu_tasks_*() functions config: ia64-randconfig-r012-20201217 (attached as .config) compiler: ia64-linux-gcc (GCC) 9.3.0 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/paulmck/linux-rcu.git/commit/?id=7655dc620982c6505386efdaf975e6bde3c27afb git remote add rcu https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git git fetch --no-tags rcu dev.2020.12.15b git checkout 7655dc620982c6505386efdaf975e6bde3c27afb # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=ia64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <l...@intel.com>
All errors (new ones prefixed by >>):
In file included from arch/ia64/include/asm/pgtable.h:154,
from include/linux/pgtable.h:6,
from arch/ia64/include/asm/uaccess.h:40,
from include/linux/uaccess.h:11,
from arch/ia64/include/asm/sections.h:11,
from include/linux/interrupt.h:20,
from kernel/rcu/update.c:25:
arch/ia64/include/asm/mmu_context.h: In function 'reload_context':
arch/ia64/include/asm/mmu_context.h:137:41: warning: variable 'old_rr4' set
but not used [-Wunused-but-set-variable]
137 | unsigned long rr0, rr1, rr2, rr3, rr4, old_rr4;
| ^~~~~~~
In file included from include/uapi/linux/posix_types.h:5,
from include/uapi/linux/types.h:14,
from include/linux/types.h:6,
from kernel/rcu/update.c:20:
kernel/rcu/tasks.h: In function 'show_rcu_tasks_gp_kthreads':
>> include/linux/stddef.h:8:14: error: called object is not a function or
>> function pointer
8 | #define NULL ((void *)0)
| ^
kernel/rcu/rcu.h:554:40: note: in expansion of macro 'NULL'
554 | #define show_rcu_tasks_rude_gp_kthread NULL
| ^~~~
kernel/rcu/tasks.h:1222:2: note: in expansion of macro
'show_rcu_tasks_rude_gp_kthread'
1222 | show_rcu_tasks_rude_gp_kthread();
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> include/linux/stddef.h:8:14: error: called object is not a function or
>> function pointer
8 | #define NULL ((void *)0)
| ^
kernel/rcu/rcu.h:559:41: note: in expansion of macro 'NULL'
559 | #define show_rcu_tasks_trace_gp_kthread NULL
| ^~~~
kernel/rcu/tasks.h:1223:2: note: in expansion of macro
'show_rcu_tasks_trace_gp_kthread'
1223 | show_rcu_tasks_trace_gp_kthread();
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +8 include/linux/stddef.h
^1da177e4c3f415 Linus Torvalds 2005-04-16 6
^1da177e4c3f415 Linus Torvalds 2005-04-16 7 #undef NULL
^1da177e4c3f415 Linus Torvalds 2005-04-16 @8 #define NULL ((void *)0)
6e2182874324727 Richard Knutsson 2006-09-30 9
:::::: The code at line 8 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2
:::::: TO: Linus Torvalds <torva...@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torva...@ppc970.osdl.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
Description: application/gzip
