From: kernel test robot <lkp@intel.com>
To: Heiko Carstens <hca@linux.ibm.com>
Cc: oe-kbuild-all@lists.linux.dev,
Linux Memory Management List <linux-mm@kvack.org>,
Vasily Gorbik <gor@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>
Subject: [linux-next:master 5045/13299] arch/s390/include/asm/ctlreg.h:80:9: warning: array subscript 0 is outside array bounds of 'struct ctlreg[0]'
Date: Wed, 18 Oct 2023 18:48:16 +0800 [thread overview]
Message-ID: <202310181800.Bh66q0T1-lkp@intel.com> (raw)
Hi Heiko,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 2dac75696c6da3c848daa118a729827541c89d33
commit: 527618abb92793b9d4dba548d55822dcebd95317 [5045/13299] s390/ctlreg: add struct ctlreg
config: s390-buildonly-randconfig-r004-20220731 (https://download.01.org/0day-ci/archive/20231018/202310181800.Bh66q0T1-lkp@intel.com/config)
compiler: s390-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231018/202310181800.Bh66q0T1-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202310181800.Bh66q0T1-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from arch/s390/include/asm/lowcore.h:14,
from arch/s390/include/asm/current.h:13,
from arch/s390/include/asm/preempt.h:5,
from include/linux/preempt.h:79,
from arch/s390/include/asm/percpu.h:5,
from include/linux/irqflags.h:18,
from include/linux/rcupdate.h:26,
from include/linux/sysctl.h:26,
from arch/s390/mm/pgalloc.c:9:
In function 'local_ctl_load',
inlined from '__crst_table_upgrade' at arch/s390/mm/pgalloc.c:66:3:
>> arch/s390/include/asm/ctlreg.h:80:9: warning: array subscript 0 is outside array bounds of 'struct ctlreg[0]' [-Warray-bounds=]
80 | asm volatile(
| ^~~
In function '__crst_table_upgrade':
cc1: note: source object is likely at address zero
vim +80 arch/s390/include/asm/ctlreg.h
a0616cdebcfd57 arch/s390/include/asm/ctl_reg.h David Howells 2012-03-28 77
527618abb92793 arch/s390/include/asm/ctlreg.h Heiko Carstens 2023-09-11 78 static __always_inline void local_ctl_load(unsigned int cr, struct ctlreg *reg)
dfa33ce1245a4b arch/s390/include/asm/ctlreg.h Heiko Carstens 2023-09-11 79 {
dfa33ce1245a4b arch/s390/include/asm/ctlreg.h Heiko Carstens 2023-09-11 @80 asm volatile(
dfa33ce1245a4b arch/s390/include/asm/ctlreg.h Heiko Carstens 2023-09-11 81 " lctlg %[cr],%[cr],%[reg]\n"
dfa33ce1245a4b arch/s390/include/asm/ctlreg.h Heiko Carstens 2023-09-11 82 :
dfa33ce1245a4b arch/s390/include/asm/ctlreg.h Heiko Carstens 2023-09-11 83 : [reg] "Q" (*reg), [cr] "i" (cr)
dfa33ce1245a4b arch/s390/include/asm/ctlreg.h Heiko Carstens 2023-09-11 84 : "memory");
dfa33ce1245a4b arch/s390/include/asm/ctlreg.h Heiko Carstens 2023-09-11 85 }
dfa33ce1245a4b arch/s390/include/asm/ctlreg.h Heiko Carstens 2023-09-11 86
:::::: The code at line 80 was first introduced by commit
:::::: dfa33ce1245a4b88402947fa0a847e179044d2fc s390/ctlreg: add local_ctl_load() and local_ctl_store()
:::::: TO: Heiko Carstens <hca@linux.ibm.com>
:::::: CC: Vasily Gorbik <gor@linux.ibm.com>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2023-10-18 10:48 UTC|newest]
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