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Message-ID: <202601261555.3oBvFZIt-lkp@intel.com>
Date: Mon, 26 Jan 2026 15:15:21 +0800
From: kernel test robot <lkp@...el.com>
To: Kairui Song <ryncsn@...il.com>, linux-mm@...ck.org
Cc: oe-kbuild-all@...ts.linux.dev,
Andrew Morton <akpm@...ux-foundation.org>,
Linux Memory Management List <linux-mm@...ck.org>,
Kemeng Shi <shikemeng@...weicloud.com>,
Nhat Pham <nphamcs@...il.com>, Baoquan He <bhe@...hat.com>,
Barry Song <baohua@...nel.org>,
Johannes Weiner <hannes@...xchg.org>,
David Hildenbrand <david@...nel.org>,
Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
linux-kernel@...r.kernel.org, Chris Li <chrisl@...nel.org>,
Kairui Song <kasong@...cent.com>
Subject: Re: [PATCH 06/12] mm, swap: implement helpers for reserving data in
the swap table
Hi Kairui,
kernel test robot noticed the following build errors:
[auto build test ERROR on 10de4550639e9df9242e32e9affc90ed75a27c7d]
url: https://github.com/intel-lab-lkp/linux/commits/Kairui-Song/mm-swap-protect-si-swap_file-properly-and-use-as-a-mount-indicator/20260126-020149
base: 10de4550639e9df9242e32e9affc90ed75a27c7d
patch link: https://lore.kernel.org/r/20260126-swap-table-p3-v1-6-a74155fab9b0%40tencent.com
patch subject: [PATCH 06/12] mm, swap: implement helpers for reserving data in the swap table
config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20260126/202601261555.3oBvFZIt-lkp@intel.com/config)
compiler: arc-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260126/202601261555.3oBvFZIt-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/202601261555.3oBvFZIt-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from <command-line>:
In function 'pfn_to_swp_tb',
inlined from 'folio_to_swp_tb' at mm/swap_table.h:115:9,
inlined from '__swap_cache_add_folio' at mm/swap_state.c:151:11:
>> include/linux/compiler_types.h:631:45: error: call to '__compiletime_assert_601' declared with attribute error: BUILD_BUG_ON failed: SWAP_CACHE_PFN_BITS > (BITS_PER_LONG - SWP_TB_PFN_MARK_BITS - SWP_TB_COUNT_BITS)
631 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler_types.h:612:25: note: in definition of macro '__compiletime_assert'
612 | prefix ## suffix(); \
| ^~~~~~
include/linux/compiler_types.h:631:9: note: in expansion of macro '_compiletime_assert'
631 | _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)
| ^~~~~~~~~~~~~~~~
mm/swap_table.h:104:9: note: in expansion of macro 'BUILD_BUG_ON'
104 | BUILD_BUG_ON(SWAP_CACHE_PFN_BITS >
| ^~~~~~~~~~~~
In function 'pfn_to_swp_tb',
inlined from 'folio_to_swp_tb' at mm/swap_table.h:115:9,
inlined from '__swap_cache_replace_folio' at mm/swap_state.c:334:11:
>> include/linux/compiler_types.h:631:45: error: call to '__compiletime_assert_601' declared with attribute error: BUILD_BUG_ON failed: SWAP_CACHE_PFN_BITS > (BITS_PER_LONG - SWP_TB_PFN_MARK_BITS - SWP_TB_COUNT_BITS)
631 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler_types.h:612:25: note: in definition of macro '__compiletime_assert'
612 | prefix ## suffix(); \
| ^~~~~~
include/linux/compiler_types.h:631:9: note: in expansion of macro '_compiletime_assert'
631 | _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)
| ^~~~~~~~~~~~~~~~
mm/swap_table.h:104:9: note: in expansion of macro 'BUILD_BUG_ON'
104 | BUILD_BUG_ON(SWAP_CACHE_PFN_BITS >
| ^~~~~~~~~~~~
vim +/__compiletime_assert_601 +631 include/linux/compiler_types.h
eb5c2d4b45e3d2d Will Deacon 2020-07-21 617
eb5c2d4b45e3d2d Will Deacon 2020-07-21 618 #define _compiletime_assert(condition, msg, prefix, suffix) \
eb5c2d4b45e3d2d Will Deacon 2020-07-21 619 __compiletime_assert(condition, msg, prefix, suffix)
eb5c2d4b45e3d2d Will Deacon 2020-07-21 620
eb5c2d4b45e3d2d Will Deacon 2020-07-21 621 /**
eb5c2d4b45e3d2d Will Deacon 2020-07-21 622 * compiletime_assert - break build and emit msg if condition is false
eb5c2d4b45e3d2d Will Deacon 2020-07-21 623 * @condition: a compile-time constant condition to check
eb5c2d4b45e3d2d Will Deacon 2020-07-21 624 * @msg: a message to emit if condition is false
eb5c2d4b45e3d2d Will Deacon 2020-07-21 625 *
eb5c2d4b45e3d2d Will Deacon 2020-07-21 626 * In tradition of POSIX assert, this macro will break the build if the
eb5c2d4b45e3d2d Will Deacon 2020-07-21 627 * supplied condition is *false*, emitting the supplied error message if the
eb5c2d4b45e3d2d Will Deacon 2020-07-21 628 * compiler has support to do so.
eb5c2d4b45e3d2d Will Deacon 2020-07-21 629 */
eb5c2d4b45e3d2d Will Deacon 2020-07-21 630 #define compiletime_assert(condition, msg) \
eb5c2d4b45e3d2d Will Deacon 2020-07-21 @631 _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
eb5c2d4b45e3d2d Will Deacon 2020-07-21 632
--
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https://github.com/intel/lkp-tests/wiki
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