linux-kernel - include/linux/compiler_types.h:358:45: error: call to '__compiletime_assert_969' declared with attribute error: BUILD_BUG_ON failed: sizeof(struct ieee80211_rx

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Date: Sun, 7 Apr 2024 21:54:36 +0800
From: kernel test robot <lkp@...el.com>
To: Johannes Berg <johannes.berg@...el.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: include/linux/compiler_types.h:358:45: error: call to
 '__compiletime_assert_969' declared with attribute error: BUILD_BUG_ON
 failed: sizeof(struct ieee80211_rx_status) > sizeof(skb->cb)

Hi Johannes,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   f2f80ac809875855ac843f9e5e7480604b5cbff5
commit: f66c48af7a110c0d694c4ac4a1257affb272a2ea mac80211: support minimal EHT rate reporting on RX
date:   1 year, 3 months ago
config: arm-randconfig-r132-20240407 (https://download.01.org/0day-ci/archive/20240407/202404072115.AWjHM1sP-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20240407/202404072115.AWjHM1sP-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/202404072115.AWjHM1sP-lkp@intel.com/

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_969' 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_969 +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@...nel.org>
:::::: CC: Will Deacon <will@...nel.org>

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https://github.com/intel/lkp-tests/wiki