[peterz-queue:x86/entry 5/5] include/linux/compiler.h:392:38: error: call to '__compiletime_assert_211' declared with attribute error: BUILD_BUG_ON failed: N_EXCEPTION_STACKS != 6

[kbuild test robot <lkp@intel.com>]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git x86/entry
head:   d4a2e181448920eddbeb53a79df45e1d7cdddfee
commit: d4a2e181448920eddbeb53a79df45e1d7cdddfee [5/5] x86/entry: Remove DBn stacks
config: x86_64-defconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-13) 9.3.0
reproduce (this is a W=1 build):
        git checkout d4a2e181448920eddbeb53a79df45e1d7cdddfee
        # save the attached .config to linux build tree
        make W=1 ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

All error/warnings (new ones prefixed by >>, old ones prefixed by <<):

In file included from include/linux/export.h:43,
from include/linux/linkage.h:7,
from include/linux/kernel.h:8,
from include/linux/kallsyms.h:10,
from arch/x86/kernel/dumpstack_64.c:7:
arch/x86/kernel/dumpstack_64.c: In function 'stack_type_name':
>> include/linux/compiler.h:392:38: error: call to '__compiletime_assert_211' declared with attribute error: BUILD_BUG_ON failed: N_EXCEPTION_STACKS != 6
392 |  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
|                                      ^
include/linux/compiler.h:373:4: note: in definition of macro '__compiletime_assert'
373 |    prefix ## suffix();             |    ^~~~~~
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)
|  ^~~~~~~~~~~~~~~~
>> arch/x86/kernel/dumpstack_64.c:31:2: note: in expansion of macro 'BUILD_BUG_ON'
31 |  BUILD_BUG_ON(N_EXCEPTION_STACKS != 6);
|  ^~~~~~~~~~~~
In function 'in_exception_stack',
inlined from 'get_stack_info' at arch/x86/kernel/dumpstack_64.c:164:6:
include/linux/compiler.h:392:38: error: call to '__compiletime_assert_212' declared with attribute error: BUILD_BUG_ON failed: N_EXCEPTION_STACKS != 6
392 |  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
|                                      ^
include/linux/compiler.h:373:4: note: in definition of macro '__compiletime_assert'
373 |    prefix ## suffix();             |    ^~~~~~
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)
|  ^~~~~~~~~~~~~~~~
arch/x86/kernel/dumpstack_64.c:91:2: note: in expansion of macro 'BUILD_BUG_ON'
91 |  BUILD_BUG_ON(N_EXCEPTION_STACKS != 6);
|  ^~~~~~~~~~~~

vim +/__compiletime_assert_211 +392 include/linux/compiler.h

9a8ab1c39970a4 Daniel Santos 2013-02-21  378  
9a8ab1c39970a4 Daniel Santos 2013-02-21  379  #define _compiletime_assert(condition, msg, prefix, suffix) \
9a8ab1c39970a4 Daniel Santos 2013-02-21  380  	__compiletime_assert(condition, msg, prefix, suffix)
9a8ab1c39970a4 Daniel Santos 2013-02-21  381  
9a8ab1c39970a4 Daniel Santos 2013-02-21  382  /**
9a8ab1c39970a4 Daniel Santos 2013-02-21  383   * compiletime_assert - break build and emit msg if condition is false
9a8ab1c39970a4 Daniel Santos 2013-02-21  384   * @condition: a compile-time constant condition to check
9a8ab1c39970a4 Daniel Santos 2013-02-21  385   * @msg:       a message to emit if condition is false
9a8ab1c39970a4 Daniel Santos 2013-02-21  386   *
9a8ab1c39970a4 Daniel Santos 2013-02-21  387   * In tradition of POSIX assert, this macro will break the build if the
9a8ab1c39970a4 Daniel Santos 2013-02-21  388   * supplied condition is *false*, emitting the supplied error message if the
9a8ab1c39970a4 Daniel Santos 2013-02-21  389   * compiler has support to do so.
9a8ab1c39970a4 Daniel Santos 2013-02-21  390   */
9a8ab1c39970a4 Daniel Santos 2013-02-21  391  #define compiletime_assert(condition, msg) \
af9c5d2e3b3558 Vegard Nossum 2020-04-06 @392  	_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
9a8ab1c39970a4 Daniel Santos 2013-02-21  393  

:::::: The code at line 392 was first introduced by commit
:::::: af9c5d2e3b355854ff0e4acfbfbfadcd5198a349 compiler.h: fix error in BUILD_BUG_ON() reporting

:::::: TO: Vegard Nossum <vegard.nossum@oracle.com>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>

---
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