linux-kernel - Re: [PATCH v12 1/3] lib: Introduce hierarchical per-cpu counters

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <202601120245.v2Trbgck-lkp@intel.com>
Date: Mon, 12 Jan 2026 02:36:32 +0800
From: kernel test robot <lkp@...el.com>
To: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc: oe-kbuild-all@...ts.linux.dev,
	Linux Memory Management List <linux-mm@...ck.org>,
	linux-kernel@...r.kernel.org,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	"Paul E. McKenney" <paulmck@...nel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Dennis Zhou <dennis@...nel.org>, Tejun Heo <tj@...nel.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Martin Liu <liumartin@...gle.com>,
	David Rientjes <rientjes@...gle.com>, christian.koenig@....com,
	Shakeel Butt <shakeel.butt@...ux.dev>,
	SeongJae Park <sj@...nel.org>, Michal Hocko <mhocko@...e.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Sweet Tea Dorminy <sweettea-kernel@...miny.me>,
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
	"Liam R . Howlett" <liam.howlett@...cle.com>,
	Mike Rapoport <rppt@...nel.org>,
	Suren Baghdasaryan <surenb@...gle.com>,
	Vlastimil Babka <vbabka@...e.cz>,
	Christian Brauner <brauner@...nel.org>,
	Wei Yang <richard.weiyang@...il.com>,
	David Hildenbrand <david@...hat.com>,
	Miaohe Lin <linmiaohe@...wei.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	linux-trace-kernel@...r.kernel.org, Yu Zhao <yuzhao@...gle.com>
Subject: Re: [PATCH v12 1/3] lib: Introduce hierarchical per-cpu counters

Hi Mathieu,

kernel test robot noticed the following build errors:

[auto build test ERROR on next-20260109]
[cannot apply to akpm-mm/mm-everything kees/for-next/execve tip/sched/core linus/master v6.19-rc4 v6.19-rc3 v6.19-rc2 v6.19-rc4]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Mathieu-Desnoyers/lib-Introduce-hierarchical-per-cpu-counters/20260111-231206
base:   next-20260109
patch link:    https://lore.kernel.org/r/20260111150249.1222944-2-mathieu.desnoyers%40efficios.com
patch subject: [PATCH v12 1/3] lib: Introduce hierarchical per-cpu counters
config: x86_64-randconfig-161-20260112 (https://download.01.org/0day-ci/archive/20260112/202601120245.v2Trbgck-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
smatch version: v0.5.0-8985-g2614ff1a
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260112/202601120245.v2Trbgck-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/202601120245.v2Trbgck-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from init/main.c:107:
>> include/linux/percpu_counter_tree.h:230:13: error: incompatible pointer types passing 'atomic_long_t *' (aka 'atomic64_t *') to parameter of type 'atomic_t *' [-Werror,-Wincompatible-pointer-types]
     230 |         atomic_set(&counter->count, v);
         |                    ^~~~~~~~~~~~~~~
   include/linux/atomic/atomic-instrumented.h:65:22: note: passing argument to parameter 'v' here
      65 | atomic_set(atomic_t *v, int i)
         |                      ^
   1 error generated.


vim +230 include/linux/percpu_counter_tree.h

   226	
   227	static inline
   228	void percpu_counter_tree_set(struct percpu_counter_tree *counter, long v)
   229	{
 > 230		atomic_set(&counter->count, v);
   231	}
   232	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki