* [Intel-wired-lan] [jkirsher-next-queue:dev-queue 1901/1959] include/linux/kernel.h:47:38: warning: division by zero
@ 2020-08-01 14:09 ` kernel test robot
0 siblings, 0 replies; 4+ messages in thread
From: kernel test robot @ 2020-08-01 14:09 UTC (permalink / raw)
To: intel-wired-lan
tree: https://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue.git dev-queue
head: 9217a41c8ac7e1ca23399f9af7455f1085df9594
commit: 9466a1ccebbe54ac57fb8a89c2b4b854826546a8 [1901/1959] mptcp: enable JOIN requests even if cookies are in use
config: parisc-randconfig-c004-20200731 (attached as .config)
compiler: hppa-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
git checkout 9466a1ccebbe54ac57fb8a89c2b4b854826546a8
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=parisc
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
In file included from include/linux/skbuff.h:13,
from net/mptcp/syncookies.c:2:
net/mptcp/syncookies.c: In function 'mptcp_join_cookie_init':
>> include/linux/kernel.h:47:38: warning: division by zero [-Wdiv-by-zero]
47 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ^
net/mptcp/syncookies.c:128:18: note: in expansion of macro 'ARRAY_SIZE'
128 | for (i = 0; i < ARRAY_SIZE(join_entry_locks); i++)
| ^~~~~~~~~~
In file included from include/linux/kernel.h:11,
from include/linux/skbuff.h:13,
from net/mptcp/syncookies.c:2:
>> include/linux/kernel.h:47:38: warning: division by zero [-Wdiv-by-zero]
47 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ^
include/linux/compiler.h:372:9: note: in definition of macro '__compiletime_assert'
372 | if (!(condition)) \
| ^~~~~~~~~
include/linux/compiler.h:392:2: note: in expansion of macro '_compiletime_assert'
392 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
| ^~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:50:2: note: in expansion of macro 'BUILD_BUG_ON_MSG'
50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
| ^~~~~~~~~~~~~~~~
net/mptcp/syncookies.c:131:2: note: in expansion of macro 'BUILD_BUG_ON'
131 | BUILD_BUG_ON(ARRAY_SIZE(join_entry_locks) != ARRAY_SIZE(join_entries));
| ^~~~~~~~~~~~
net/mptcp/syncookies.c:131:15: note: in expansion of macro 'ARRAY_SIZE'
131 | BUILD_BUG_ON(ARRAY_SIZE(join_entry_locks) != ARRAY_SIZE(join_entries));
| ^~~~~~~~~~
vim +47 include/linux/kernel.h
d38499530e5f170 Christoph Hellwig 2016-11-01 42
e8c97af0c1f23d6 Randy Dunlap 2017-10-13 43 /**
e8c97af0c1f23d6 Randy Dunlap 2017-10-13 44 * ARRAY_SIZE - get the number of elements in array @arr
e8c97af0c1f23d6 Randy Dunlap 2017-10-13 45 * @arr: array to be sized
e8c97af0c1f23d6 Randy Dunlap 2017-10-13 46 */
c5e631cf65f4d68 Rusty Russell 2007-05-06 @47 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
c5e631cf65f4d68 Rusty Russell 2007-05-06 48
:::::: The code at line 47 was first introduced by commit
:::::: c5e631cf65f4d6875efcd571275436f2964a8b48 ARRAY_SIZE: check for type
:::::: TO: Rusty Russell <rusty@rustcorp.com.au>
:::::: CC: Linus Torvalds <torvalds@woody.linux-foundation.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all at lists.01.org
-------------- next part --------------
A non-text attachment was scrubbed...
Name: .config.gz
Type: application/gzip
Size: 27980 bytes
Desc: not available
URL: <http://lists.osuosl.org/pipermail/intel-wired-lan/attachments/20200801/7b084499/attachment-0001.bin>
^ permalink raw reply [flat|nested] 4+ messages in thread
* [jkirsher-next-queue:dev-queue 1901/1959] include/linux/kernel.h:47:38: warning: division by zero
@ 2020-08-01 14:09 ` kernel test robot
0 siblings, 0 replies; 4+ messages in thread
From: kernel test robot @ 2020-08-01 14:09 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 3956 bytes --]
tree: https://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue.git dev-queue
head: 9217a41c8ac7e1ca23399f9af7455f1085df9594
commit: 9466a1ccebbe54ac57fb8a89c2b4b854826546a8 [1901/1959] mptcp: enable JOIN requests even if cookies are in use
config: parisc-randconfig-c004-20200731 (attached as .config)
compiler: hppa-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
git checkout 9466a1ccebbe54ac57fb8a89c2b4b854826546a8
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=parisc
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
In file included from include/linux/skbuff.h:13,
from net/mptcp/syncookies.c:2:
net/mptcp/syncookies.c: In function 'mptcp_join_cookie_init':
>> include/linux/kernel.h:47:38: warning: division by zero [-Wdiv-by-zero]
47 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ^
net/mptcp/syncookies.c:128:18: note: in expansion of macro 'ARRAY_SIZE'
128 | for (i = 0; i < ARRAY_SIZE(join_entry_locks); i++)
| ^~~~~~~~~~
In file included from include/linux/kernel.h:11,
from include/linux/skbuff.h:13,
from net/mptcp/syncookies.c:2:
>> include/linux/kernel.h:47:38: warning: division by zero [-Wdiv-by-zero]
47 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
| ^
include/linux/compiler.h:372:9: note: in definition of macro '__compiletime_assert'
372 | if (!(condition)) \
| ^~~~~~~~~
include/linux/compiler.h:392:2: note: in expansion of macro '_compiletime_assert'
392 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
| ^~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:50:2: note: in expansion of macro 'BUILD_BUG_ON_MSG'
50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
| ^~~~~~~~~~~~~~~~
net/mptcp/syncookies.c:131:2: note: in expansion of macro 'BUILD_BUG_ON'
131 | BUILD_BUG_ON(ARRAY_SIZE(join_entry_locks) != ARRAY_SIZE(join_entries));
| ^~~~~~~~~~~~
net/mptcp/syncookies.c:131:15: note: in expansion of macro 'ARRAY_SIZE'
131 | BUILD_BUG_ON(ARRAY_SIZE(join_entry_locks) != ARRAY_SIZE(join_entries));
| ^~~~~~~~~~
vim +47 include/linux/kernel.h
d38499530e5f170 Christoph Hellwig 2016-11-01 42
e8c97af0c1f23d6 Randy Dunlap 2017-10-13 43 /**
e8c97af0c1f23d6 Randy Dunlap 2017-10-13 44 * ARRAY_SIZE - get the number of elements in array @arr
e8c97af0c1f23d6 Randy Dunlap 2017-10-13 45 * @arr: array to be sized
e8c97af0c1f23d6 Randy Dunlap 2017-10-13 46 */
c5e631cf65f4d68 Rusty Russell 2007-05-06 @47 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
c5e631cf65f4d68 Rusty Russell 2007-05-06 48
:::::: The code at line 47 was first introduced by commit
:::::: c5e631cf65f4d6875efcd571275436f2964a8b48 ARRAY_SIZE: check for type
:::::: TO: Rusty Russell <rusty@rustcorp.com.au>
:::::: CC: Linus Torvalds <torvalds@woody.linux-foundation.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 27980 bytes --]
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Intel-wired-lan] [jkirsher-next-queue:dev-queue 1901/1959] include/linux/kernel.h:47:38: warning: division by zero
2020-08-01 14:09 ` kernel test robot
@ 2020-08-01 14:41 ` Florian Westphal
-1 siblings, 0 replies; 4+ messages in thread
From: Florian Westphal @ 2020-08-01 14:41 UTC (permalink / raw)
To: intel-wired-lan
kernel test robot <lkp@intel.com> wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue.git dev-queue
> head: 9217a41c8ac7e1ca23399f9af7455f1085df9594
> commit: 9466a1ccebbe54ac57fb8a89c2b4b854826546a8 [1901/1959] mptcp: enable JOIN requests even if cookies are in use
> config: parisc-randconfig-c004-20200731 (attached as .config)
> compiler: hppa-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
> git checkout 9466a1ccebbe54ac57fb8a89c2b4b854826546a8
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=parisc
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> All warnings (new ones prefixed by >>):
>
> In file included from include/linux/skbuff.h:13,
> from net/mptcp/syncookies.c:2:
> net/mptcp/syncookies.c: In function 'mptcp_join_cookie_init':
> >> include/linux/kernel.h:47:38: warning: division by zero [-Wdiv-by-zero]
> 47 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
I forgot ARRAY_SIZE can't be used for spinlock_t arrays because they are
0 on UP. I've sumitted a build fix.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [jkirsher-next-queue:dev-queue 1901/1959] include/linux/kernel.h:47:38: warning: division by zero
@ 2020-08-01 14:41 ` Florian Westphal
0 siblings, 0 replies; 4+ messages in thread
From: Florian Westphal @ 2020-08-01 14:41 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 1435 bytes --]
kernel test robot <lkp@intel.com> wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue.git dev-queue
> head: 9217a41c8ac7e1ca23399f9af7455f1085df9594
> commit: 9466a1ccebbe54ac57fb8a89c2b4b854826546a8 [1901/1959] mptcp: enable JOIN requests even if cookies are in use
> config: parisc-randconfig-c004-20200731 (attached as .config)
> compiler: hppa-linux-gcc (GCC) 9.3.0
> reproduce (this is a W=1 build):
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> git checkout 9466a1ccebbe54ac57fb8a89c2b4b854826546a8
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=parisc
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> All warnings (new ones prefixed by >>):
>
> In file included from include/linux/skbuff.h:13,
> from net/mptcp/syncookies.c:2:
> net/mptcp/syncookies.c: In function 'mptcp_join_cookie_init':
> >> include/linux/kernel.h:47:38: warning: division by zero [-Wdiv-by-zero]
> 47 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
I forgot ARRAY_SIZE can't be used for spinlock_t arrays because they are
0 on UP. I've sumitted a build fix.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2020-08-01 14:41 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2020-08-01 14:09 [Intel-wired-lan] [jkirsher-next-queue:dev-queue 1901/1959] include/linux/kernel.h:47:38: warning: division by zero kernel test robot
2020-08-01 14:09 ` kernel test robot
2020-08-01 14:41 ` [Intel-wired-lan] " Florian Westphal
2020-08-01 14:41 ` Florian Westphal
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.