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Date: Wed, 6 Dec 2023 03:12:01 +0800
From: kernel test robot <lkp@...el.com>
To: Maciej Żenczykowski <maze@...gle.com>,
Maciej Żenczykowski <zenczykowski@...il.com>
Cc: oe-kbuild-all@...ts.linux.dev,
Linux Network Development Mailing List <netdev@...r.kernel.org>,
"David S . Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
Shirley Ma <mashirle@...ibm.com>, David Ahern <dsahern@...nel.org>,
Lorenzo Colitti <lorenzo@...gle.com>
Subject: Re: [PATCH net] net: ipv6: support reporting otherwise unknown
prefix flags in RTM_NEWPREFIX
Hi Maciej,
kernel test robot noticed the following build errors:
[auto build test ERROR on net/main]
url: https://github.com/intel-lab-lkp/linux/commits/Maciej-enczykowski/net-ipv6-support-reporting-otherwise-unknown-prefix-flags-in-RTM_NEWPREFIX/20231205-035333
base: net/main
patch link: https://lore.kernel.org/r/20231204195252.2004515-1-maze%40google.com
patch subject: [PATCH net] net: ipv6: support reporting otherwise unknown prefix flags in RTM_NEWPREFIX
config: arm-rpc_defconfig (https://download.01.org/0day-ci/archive/20231206/202312060307.EaL1FRwu-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231206/202312060307.EaL1FRwu-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/202312060307.EaL1FRwu-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from include/linux/container_of.h:5,
from include/linux/list.h:5,
from include/linux/module.h:12,
from fs/lockd/svc.c:16:
>> include/linux/build_bug.h:78:41: error: static assertion failed: "sizeof(struct prefix_info) == 32"
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~~~~~~~~~~~
include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ^~~~~~~~~~~~~~~
include/net/addrconf.h:58:1: note: in expansion of macro 'static_assert'
58 | static_assert(sizeof(struct prefix_info) == 32);
| ^~~~~~~~~~~~~
--
In file included from lib/vsprintf.c:21:
>> include/linux/build_bug.h:78:41: error: static assertion failed: "sizeof(struct prefix_info) == 32"
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~~~~~~~~~~~
include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ^~~~~~~~~~~~~~~
include/net/addrconf.h:58:1: note: in expansion of macro 'static_assert'
58 | static_assert(sizeof(struct prefix_info) == 32);
| ^~~~~~~~~~~~~
lib/vsprintf.c: In function 'va_format':
lib/vsprintf.c:1683:9: warning: function 'va_format' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
1683 | buf += vsnprintf(buf, end > buf ? end - buf : 0, va_fmt->fmt, va);
| ^~~
--
In file included from include/linux/container_of.h:5,
from include/linux/list.h:5,
from include/linux/module.h:12,
from net/ipv4/route.c:63:
>> include/linux/build_bug.h:78:41: error: static assertion failed: "sizeof(struct prefix_info) == 32"
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~~~~~~~~~~~
include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ^~~~~~~~~~~~~~~
include/net/addrconf.h:58:1: note: in expansion of macro 'static_assert'
58 | static_assert(sizeof(struct prefix_info) == 32);
| ^~~~~~~~~~~~~
net/ipv4/route.c: In function 'ip_rt_send_redirect':
net/ipv4/route.c:880:13: warning: variable 'log_martians' set but not used [-Wunused-but-set-variable]
880 | int log_martians;
| ^~~~~~~~~~~~
--
In file included from include/linux/container_of.h:5,
from include/linux/list.h:5,
from include/linux/timer.h:5,
from include/linux/workqueue.h:9,
from include/linux/bpf.h:10,
from net/ipv6/ip6_fib.c:18:
>> include/linux/build_bug.h:78:41: error: static assertion failed: "sizeof(struct prefix_info) == 32"
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~~~~~~~~~~~
include/linux/build_bug.h:77:34: note: in expansion of macro '__static_assert'
77 | #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
| ^~~~~~~~~~~~~~~
include/net/addrconf.h:58:1: note: in expansion of macro 'static_assert'
58 | static_assert(sizeof(struct prefix_info) == 32);
| ^~~~~~~~~~~~~
net/ipv6/ip6_fib.c: In function 'fib6_add':
net/ipv6/ip6_fib.c:1384:32: warning: variable 'pn' set but not used [-Wunused-but-set-variable]
1384 | struct fib6_node *fn, *pn = NULL;
| ^~
vim +78 include/linux/build_bug.h
bc6245e5efd70c Ian Abbott 2017-07-10 60
6bab69c65013be Rasmus Villemoes 2019-03-07 61 /**
6bab69c65013be Rasmus Villemoes 2019-03-07 62 * static_assert - check integer constant expression at build time
6bab69c65013be Rasmus Villemoes 2019-03-07 63 *
6bab69c65013be Rasmus Villemoes 2019-03-07 64 * static_assert() is a wrapper for the C11 _Static_assert, with a
6bab69c65013be Rasmus Villemoes 2019-03-07 65 * little macro magic to make the message optional (defaulting to the
6bab69c65013be Rasmus Villemoes 2019-03-07 66 * stringification of the tested expression).
6bab69c65013be Rasmus Villemoes 2019-03-07 67 *
6bab69c65013be Rasmus Villemoes 2019-03-07 68 * Contrary to BUILD_BUG_ON(), static_assert() can be used at global
6bab69c65013be Rasmus Villemoes 2019-03-07 69 * scope, but requires the expression to be an integer constant
6bab69c65013be Rasmus Villemoes 2019-03-07 70 * expression (i.e., it is not enough that __builtin_constant_p() is
6bab69c65013be Rasmus Villemoes 2019-03-07 71 * true for expr).
6bab69c65013be Rasmus Villemoes 2019-03-07 72 *
6bab69c65013be Rasmus Villemoes 2019-03-07 73 * Also note that BUILD_BUG_ON() fails the build if the condition is
6bab69c65013be Rasmus Villemoes 2019-03-07 74 * true, while static_assert() fails the build if the expression is
6bab69c65013be Rasmus Villemoes 2019-03-07 75 * false.
6bab69c65013be Rasmus Villemoes 2019-03-07 76 */
6bab69c65013be Rasmus Villemoes 2019-03-07 77 #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr)
6bab69c65013be Rasmus Villemoes 2019-03-07 @78 #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
6bab69c65013be Rasmus Villemoes 2019-03-07 79
07a368b3f55a79 Maxim Levitsky 2022-10-25 80
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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