From: kernel test robot <lkp@intel.com>
To: cros-kernel-buildreports@googlegroups.com
Cc: oe-kbuild-all@lists.linux.dev
Subject: [android-common:android16-6.12-2026-06 1/1] include/linux/compiler.h:166:45: error: '__UNIQUE_ID_y_786' undeclared; did you mean '__UNIQUE_ID_x_785'?
Date: Sun, 02 Aug 2026 13:49:56 +0800 [thread overview]
Message-ID: <202608021325.pMEaTrSm-lkp@intel.com> (raw)
tree: https://android.googlesource.com/kernel/common android16-6.12-2026-06
head: 82a2ca6cbee492b7812547877238bc89e4968da4
commit: 1d9d3192c3a2b90a68a3ebe4a9b5b0fa27af0b9e [1/1] BACKPORT: locking/local_lock, mm: replace localtry_ helpers with local_trylock_t type
config: arm64-randconfig-003-20260802 (https://download.01.org/0day-ci/archive/20260802/202608021325.pMEaTrSm-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 13.4.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260802/202608021325.pMEaTrSm-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202608021325.pMEaTrSm-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from include/linux/blk-crypto.h:127,
from include/linux/blk-crypto-profile.h:10,
from include/linux/mmc/host.h:19,
from drivers/mmc/host/mmci.c:23:
include/linux/blkdev.h:1830:24: error: field 'req_list' has incomplete type
1830 | struct rq_list req_list;
| ^~~~~~~~
In file included from <command-line>:
drivers/mmc/host/mmci.c: In function 'mmci_probe':
>> include/linux/compiler.h:166:45: error: '__UNIQUE_ID_y_786' undeclared (first use in this function); did you mean '__UNIQUE_ID_x_785'?
166 | #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
| ^~~~~~~~~~~~
include/linux/compiler_types.h:528:23: note: in definition of macro '__compiletime_assert'
528 | if (!(condition)) \
| ^~~~~~~~~
include/linux/compiler_types.h:548:9: note: in expansion of macro '_compiletime_assert'
548 | _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/minmax.h:93:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
93 | BUILD_BUG_ON_MSG(!__types_ok(ux, uy), \
| ^~~~~~~~~~~~~~~~
include/linux/minmax.h:49:25: note: in expansion of macro 'is_signed_type'
49 | #define __sign_use(ux) (is_signed_type(typeof(ux)) ? \
| ^~~~~~~~~~~~~~
include/linux/minmax.h:75:27: note: in expansion of macro '__sign_use'
75 | (__sign_use(ux) & __sign_use(uy))
| ^~~~~~~~~~
include/linux/minmax.h:93:27: note: in expansion of macro '__types_ok'
93 | BUILD_BUG_ON_MSG(!__types_ok(ux, uy), \
| ^~~~~~~~~~
include/linux/minmax.h:98:9: note: in expansion of macro '__careful_cmp_once'
98 | __careful_cmp_once(op, x, y, __UNIQUE_ID(x_), __UNIQUE_ID(y_))
| ^~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:97:22: note: in expansion of macro '___PASTE'
97 | #define __PASTE(a,b) ___PASTE(a,b)
| ^~~~~~~~
include/linux/compiler.h:166:29: note: in expansion of macro '__PASTE'
166 | #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
| ^~~~~~~
include/linux/compiler_types.h:97:22: note: in expansion of macro '___PASTE'
97 | #define __PASTE(a,b) ___PASTE(a,b)
| ^~~~~~~~
include/linux/compiler.h:166:37: note: in expansion of macro '__PASTE'
166 | #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
| ^~~~~~~
include/linux/minmax.h:98:55: note: in expansion of macro '__UNIQUE_ID'
98 | __careful_cmp_once(op, x, y, __UNIQUE_ID(x_), __UNIQUE_ID(y_))
| ^~~~~~~~~~~
include/linux/minmax.h:105:25: note: in expansion of macro '__careful_cmp'
105 | #define min(x, y) __careful_cmp(min, x, y)
| ^~~~~~~~~~~~~
drivers/mmc/host/mmci.c:2333:40: note: in expansion of macro 'min'
2333 | fmax : min(host->mclk, fmax);
| ^~~
include/linux/compiler.h:166:45: note: each undeclared identifier is reported only once for each function it appears in
166 | #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
| ^~~~~~~~~~~~
include/linux/compiler_types.h:528:23: note: in definition of macro '__compiletime_assert'
528 | if (!(condition)) \
| ^~~~~~~~~
include/linux/compiler_types.h:548:9: note: in expansion of macro '_compiletime_assert'
548 | _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/minmax.h:93:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
93 | BUILD_BUG_ON_MSG(!__types_ok(ux, uy), \
| ^~~~~~~~~~~~~~~~
include/linux/minmax.h:49:25: note: in expansion of macro 'is_signed_type'
49 | #define __sign_use(ux) (is_signed_type(typeof(ux)) ? \
| ^~~~~~~~~~~~~~
include/linux/minmax.h:75:27: note: in expansion of macro '__sign_use'
75 | (__sign_use(ux) & __sign_use(uy))
| ^~~~~~~~~~
include/linux/minmax.h:93:27: note: in expansion of macro '__types_ok'
93 | BUILD_BUG_ON_MSG(!__types_ok(ux, uy), \
| ^~~~~~~~~~
include/linux/minmax.h:98:9: note: in expansion of macro '__careful_cmp_once'
98 | __careful_cmp_once(op, x, y, __UNIQUE_ID(x_), __UNIQUE_ID(y_))
| ^~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:97:22: note: in expansion of macro '___PASTE'
97 | #define __PASTE(a,b) ___PASTE(a,b)
| ^~~~~~~~
include/linux/compiler.h:166:29: note: in expansion of macro '__PASTE'
166 | #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
| ^~~~~~~
include/linux/compiler_types.h:97:22: note: in expansion of macro '___PASTE'
97 | #define __PASTE(a,b) ___PASTE(a,b)
| ^~~~~~~~
include/linux/compiler.h:166:37: note: in expansion of macro '__PASTE'
166 | #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
| ^~~~~~~
include/linux/minmax.h:98:55: note: in expansion of macro '__UNIQUE_ID'
98 | __careful_cmp_once(op, x, y, __UNIQUE_ID(x_), __UNIQUE_ID(y_))
| ^~~~~~~~~~~
include/linux/minmax.h:105:25: note: in expansion of macro '__careful_cmp'
105 | #define min(x, y) __careful_cmp(min, x, y)
| ^~~~~~~~~~~~~
drivers/mmc/host/mmci.c:2333:40: note: in expansion of macro 'min'
2333 | fmax : min(host->mclk, fmax);
| ^~~
drivers/mmc/host/mmci.c: At top level:
drivers/mmc/host/mmci.c:53:21: warning: 'fmax' defined but not used [-Wunused-variable]
53 | static unsigned int fmax = 515633;
| ^~~~
vim +166 include/linux/compiler.h
fe8c8a126806fe Cesar Eduardo Barros 2013-11-25 165
a8306f2d4dcea0 Nick Desaulniers 2023-08-31 @166 #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
6f33d58794ef4c Rusty Russell 2012-11-22 167
:::::: The code at line 166 was first introduced by commit
:::::: a8306f2d4dcea03538c70c26d2948483f70254ff compiler.h: unify __UNIQUE_ID
:::::: TO: Nick Desaulniers <ndesaulniers@google.com>
:::::: CC: Andrew Morton <akpm@linux-foundation.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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