include/linux/compiler_types.h:358:45: error: call to '__compiletime_assert_945' declared with attribute error: BUILD_BUG_ON failed: sizeof(struct ieee80211_rx_status) > sizeof(skb->cb)

From: kernel test robot
Date: Mon Jun 26 2023 - 05:15:24 EST


Hi Johannes,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 6995e2de6891c724bfeb2db33d7b87775f913ad1
commit: f66c48af7a110c0d694c4ac4a1257affb272a2ea mac80211: support minimal EHT rate reporting on RX
date: 5 months ago
config: arm-randconfig-r083-20230626 (https://download.01.org/0day-ci/archive/20230626/202306261707.RHtFZM3K-lkp@xxxxxxxxx/config)
compiler: arm-linux-gnueabi-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230626/202306261707.RHtFZM3K-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306261707.RHtFZM3K-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

In file included from <command-line>:
net/mac80211/rx.c: In function 'ieee80211_rx_irqsafe':
>> include/linux/compiler_types.h:358:45: error: call to '__compiletime_assert_945' declared with attribute error: BUILD_BUG_ON failed: sizeof(struct ieee80211_rx_status) > sizeof(skb->cb)
358 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler_types.h:339:25: note: in definition of macro '__compiletime_assert'
339 | prefix ## suffix(); \
| ^~~~~~
include/linux/compiler_types.h:358:9: note: in expansion of macro '_compiletime_assert'
358 | _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:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
| ^~~~~~~~~~~~~~~~
net/mac80211/rx.c:5283:9: note: in expansion of macro 'BUILD_BUG_ON'
5283 | BUILD_BUG_ON(sizeof(struct ieee80211_rx_status) > sizeof(skb->cb));
| ^~~~~~~~~~~~


vim +/__compiletime_assert_945 +358 include/linux/compiler_types.h

eb5c2d4b45e3d2 Will Deacon 2020-07-21 344
eb5c2d4b45e3d2 Will Deacon 2020-07-21 345 #define _compiletime_assert(condition, msg, prefix, suffix) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21 346 __compiletime_assert(condition, msg, prefix, suffix)
eb5c2d4b45e3d2 Will Deacon 2020-07-21 347
eb5c2d4b45e3d2 Will Deacon 2020-07-21 348 /**
eb5c2d4b45e3d2 Will Deacon 2020-07-21 349 * compiletime_assert - break build and emit msg if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21 350 * @condition: a compile-time constant condition to check
eb5c2d4b45e3d2 Will Deacon 2020-07-21 351 * @msg: a message to emit if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21 352 *
eb5c2d4b45e3d2 Will Deacon 2020-07-21 353 * In tradition of POSIX assert, this macro will break the build if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21 354 * supplied condition is *false*, emitting the supplied error message if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21 355 * compiler has support to do so.
eb5c2d4b45e3d2 Will Deacon 2020-07-21 356 */
eb5c2d4b45e3d2 Will Deacon 2020-07-21 357 #define compiletime_assert(condition, msg) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21 @358 _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
eb5c2d4b45e3d2 Will Deacon 2020-07-21 359

:::::: The code at line 358 was first introduced by commit
:::::: eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5 compiler.h: Move compiletime_assert() macros into compiler_types.h

:::::: TO: Will Deacon <will@xxxxxxxxxx>
:::::: CC: Will Deacon <will@xxxxxxxxxx>

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