From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 966DF7404E; Sat, 14 Feb 2026 19:45:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.7 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771098358; cv=none; b=UNTUFsa4JUgitlsebKhAMDKRnPM733Svt4sDEYokeXSkSl4cIyir++SgeY1IUtsY495+BvWmFiOwi0IFWLD8Fm+YF4/EE4eItuvD5hmSXaTOznKkCyeW3a+dwxjRGBZj5AX5xjzAqx3qSd18S/egcymAknd6HdqoTWbWLJQnBEY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771098358; c=relaxed/simple; bh=LnMulOjHBpalCWaX5XuW59wU19kckTlawfQObC2i2UE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=sak4rO1Yro0ZCoWGK+7LvgGYknroCeUM8OQ5wPt9hbPpdm9zhaBb/iXSxu1/saguc0UexwXcyU1TG43oURtBuqF/9+iHXAXYOXT9G5crU13f3kmwIy50lGONGbobIqdfNXHlVGtflPCB6mXWqNuixs/uUHuHVPWnPmltA5dZWv8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=kt3Rv7me; arc=none smtp.client-ip=192.198.163.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="kt3Rv7me" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1771098354; x=1802634354; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=LnMulOjHBpalCWaX5XuW59wU19kckTlawfQObC2i2UE=; b=kt3Rv7meJaJDsMlm1wt34UbGl9QTjuwZx2fZ3Ku+FmigNn3EGuwVEyha psBKsEPbnFXcCndRjOvKGc03Ohe44tLn1USBMmDdzXrlqRgt8OM4vOnIL LtzfWZmJOdyWxMOW+6Ta3mfssUU7zit7fSY5A4CZPm8rB3b/znxL3hmiO RyBHgUxrQEpWCdHCqM5+bKqUS5ox0PHk+c5k9zx2eDzmHeINLB4I6JH+s nx0GYFldV1CedrIZo66zriDaA32C49seeHZ6VOftGBlP83FgGLmYviTLp vxhdaH/yhYHuGK2Fv9LSkxFqJ/nq2QLglW0a72ktLsGEgud9YbImXOeEn w==; X-CSE-ConnectionGUID: avYsXzUlTOOVQ83swLIO+w== X-CSE-MsgGUID: fAdp9TS0SMursWfUBzby7A== X-IronPort-AV: E=McAfee;i="6800,10657,11701"; a="97707833" X-IronPort-AV: E=Sophos;i="6.21,291,1763452800"; d="scan'208";a="97707833" Received: from orviesa009.jf.intel.com ([10.64.159.149]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Feb 2026 11:45:53 -0800 X-CSE-ConnectionGUID: KUJvVvTyTFygS7i/pGOfTQ== X-CSE-MsgGUID: 7wxuTchXRza8PMioZHlbTg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,291,1763452800"; d="scan'208";a="213055050" Received: from lkp-server01.sh.intel.com (HELO 765f4a05e27f) ([10.239.97.150]) by orviesa009.jf.intel.com with ESMTP; 14 Feb 2026 11:45:49 -0800 Received: from kbuild by 765f4a05e27f with local (Exim 4.98.2) (envelope-from ) id 1vrLaN-00000000wvI-0ksz; Sat, 14 Feb 2026 19:45:47 +0000 Date: Sun, 15 Feb 2026 03:44:48 +0800 From: kernel test robot To: Sun Jian , mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org Cc: oe-kbuild-all@lists.linux.dev, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, vschneid@redhat.com, nathan@kernel.org, nick.desaulniers+lkml@gmail.com, morbo@google.com, justinstitt@google.com, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, Sun Jian Subject: Re: [PATCH] sched: rcu: fix rq->{curr,donor} address space annotations Message-ID: <202602150345.VAM4TsvX-lkp@intel.com> References: <20260214102005.1398306-1-sun.jian.kdev@gmail.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260214102005.1398306-1-sun.jian.kdev@gmail.com> Hi Sun, kernel test robot noticed the following build warnings: [auto build test WARNING on peterz-queue/sched/core] [also build test WARNING on linus/master v6.19 next-20260213] [cannot apply to tip/sched/core] [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/Sun-Jian/sched-rcu-fix-rq-curr-donor-address-space-annotations/20260214-182109 base: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git sched/core patch link: https://lore.kernel.org/r/20260214102005.1398306-1-sun.jian.kdev%40gmail.com patch subject: [PATCH] sched: rcu: fix rq->{curr,donor} address space annotations config: microblaze-randconfig-r131-20260214 (https://download.01.org/0day-ci/archive/20260215/202602150345.VAM4TsvX-lkp@intel.com/config) compiler: microblaze-linux-gcc (GCC) 12.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260215/202602150345.VAM4TsvX-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202602150345.VAM4TsvX-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) kernel/sched/rt.c:1493:31: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/rt.c:1815:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/rt.c:1815:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/rt.c:1815:9: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/rt.c:1512:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu * @@ kernel/sched/rt.c:1512:14: sparse: expected struct task_struct *curr kernel/sched/rt.c:1512:14: sparse: got struct task_struct [noderef] __rcu * kernel/sched/rt.c:1513:15: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu * @@ kernel/sched/rt.c:1513:15: sparse: expected struct task_struct *donor kernel/sched/rt.c:1513:15: sparse: got struct task_struct [noderef] __rcu * kernel/sched/rt.c:1574:45: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@ kernel/sched/rt.c:1574:45: sparse: expected struct task_struct *p kernel/sched/rt.c:1574:45: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/rt.c:1616:39: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu *donor @@ kernel/sched/rt.c:1616:39: sparse: expected struct task_struct *donor kernel/sched/rt.c:1616:39: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/rt.c:1641:64: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/rt.c:1641:64: sparse: expected struct task_struct *tsk kernel/sched/rt.c:1641:64: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/rt.c:1982:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *task @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/rt.c:1982:40: sparse: expected struct task_struct *task kernel/sched/rt.c:1982:40: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/rt.c:2005:13: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/rt.c:2005:13: sparse: struct task_struct * kernel/sched/rt.c:2005:13: sparse: struct task_struct [noderef] __rcu * kernel/sched/rt.c:2356:54: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/rt.c:2356:54: sparse: expected struct task_struct *tsk kernel/sched/rt.c:2356:54: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/rt.c:2358:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@ kernel/sched/rt.c:2358:40: sparse: expected struct task_struct *p kernel/sched/rt.c:2358:40: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/rt.c:2358:62: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@ kernel/sched/rt.c:2358:62: sparse: expected struct task_struct *p kernel/sched/rt.c:2358:62: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/build_policy.c: note: in included file: kernel/sched/deadline.c:2922:23: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@ kernel/sched/deadline.c:2922:23: sparse: expected struct task_struct *p kernel/sched/deadline.c:2922:23: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/deadline.c:2932:13: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/deadline.c:2932:13: sparse: struct task_struct * kernel/sched/deadline.c:2932:13: sparse: struct task_struct [noderef] __rcu * kernel/sched/deadline.c:3038:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/deadline.c:3038:25: sparse: struct task_struct * kernel/sched/deadline.c:3038:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/deadline.c:2539:42: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct sched_dl_entity const *b @@ got struct sched_dl_entity [noderef] __rcu * @@ kernel/sched/deadline.c:2539:42: sparse: expected struct sched_dl_entity const *b kernel/sched/deadline.c:2539:42: sparse: got struct sched_dl_entity [noderef] __rcu * kernel/sched/deadline.c:2549:38: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/deadline.c:2549:38: sparse: expected struct task_struct *tsk kernel/sched/deadline.c:2549:38: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/deadline.c:1198:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/deadline.c:1198:39: sparse: expected struct task_struct *p kernel/sched/deadline.c:1198:39: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/deadline.c:1198:85: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct sched_dl_entity const *b @@ got struct sched_dl_entity [noderef] __rcu * @@ kernel/sched/deadline.c:1198:85: sparse: expected struct sched_dl_entity const *b kernel/sched/deadline.c:1198:85: sparse: got struct sched_dl_entity [noderef] __rcu * kernel/sched/deadline.c:1296:23: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@ kernel/sched/deadline.c:1296:23: sparse: expected struct task_struct *p kernel/sched/deadline.c:1296:23: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/deadline.c:1815:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/deadline.c:1815:31: sparse: expected struct task_struct *p kernel/sched/deadline.c:1815:31: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/deadline.c:1815:70: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct sched_dl_entity const *b @@ got struct sched_dl_entity [noderef] __rcu * @@ kernel/sched/deadline.c:1815:70: sparse: expected struct sched_dl_entity const *b kernel/sched/deadline.c:1815:70: sparse: got struct sched_dl_entity [noderef] __rcu * kernel/sched/deadline.c:1941:39: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu *donor @@ kernel/sched/deadline.c:1941:39: sparse: expected struct task_struct *donor kernel/sched/deadline.c:1941:39: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/deadline.c:2758:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/deadline.c:2758:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/deadline.c:2758:9: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/deadline.c:2419:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu * @@ kernel/sched/deadline.c:2419:14: sparse: expected struct task_struct *curr kernel/sched/deadline.c:2419:14: sparse: got struct task_struct [noderef] __rcu * kernel/sched/deadline.c:2420:15: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu * @@ kernel/sched/deadline.c:2420:15: sparse: expected struct task_struct *donor kernel/sched/deadline.c:2420:15: sparse: got struct task_struct [noderef] __rcu * kernel/sched/deadline.c:2494:43: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@ kernel/sched/deadline.c:2494:43: sparse: expected struct task_struct *p kernel/sched/deadline.c:2494:43: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/deadline.c:3083:38: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/deadline.c:3083:38: sparse: expected struct task_struct *tsk kernel/sched/deadline.c:3083:38: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/deadline.c:3085:23: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@ kernel/sched/deadline.c:3085:23: sparse: expected struct task_struct *p kernel/sched/deadline.c:3085:23: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/deadline.c:3087:44: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct sched_dl_entity const *b @@ got struct sched_dl_entity [noderef] __rcu * @@ kernel/sched/deadline.c:3087:44: sparse: expected struct sched_dl_entity const *b kernel/sched/deadline.c:3087:44: sparse: got struct sched_dl_entity [noderef] __rcu * kernel/sched/deadline.c:3340:23: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/deadline.c:3340:23: sparse: struct task_struct [noderef] __rcu * kernel/sched/deadline.c:3340:23: sparse: struct task_struct * kernel/sched/deadline.c:3393:32: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/build_policy.c: note: in included file: kernel/sched/syscalls.c:1382:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu *donor @@ kernel/sched/build_policy.c: note: in included file: kernel/sched/rt.c:1573:15: sparse: sparse: dereference of noderef expression kernel/sched/rt.c:1958:13: sparse: sparse: dereference of noderef expression kernel/sched/rt.c:1979:23: sparse: sparse: dereference of noderef expression kernel/sched/build_policy.c: note: in included file: >> kernel/sched/sched.h:2812:35: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@ kernel/sched/build_policy.c: note: in included file: kernel/sched/rt.c:2316:45: sparse: sparse: dereference of noderef expression kernel/sched/build_policy.c: note: in included file: >> kernel/sched/sched.h:2812:35: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@ kernel/sched/build_policy.c: note: in included file: kernel/sched/rt.c:2359:32: sparse: sparse: dereference of noderef expression kernel/sched/rt.c:2360:32: sparse: sparse: dereference of noderef expression kernel/sched/rt.c:2441:33: sparse: sparse: dereference of noderef expression kernel/sched/rt.c:2479:33: sparse: sparse: dereference of noderef expression kernel/sched/build_policy.c: note: in included file: >> kernel/sched/pelt.c:480:50: sparse: sparse: dereference of noderef expression kernel/sched/build_policy.c: note: in included file: >> kernel/sched/deadline.c:1169:19: sparse: sparse: dereference of noderef expression kernel/sched/deadline.c:1808:11: sparse: sparse: dereference of noderef expression kernel/sched/deadline.c:2384:11: sparse: sparse: dereference of noderef expression kernel/sched/deadline.c:2493:15: sparse: sparse: dereference of noderef expression kernel/sched/deadline.c:2548:34: sparse: sparse: dereference of noderef expression kernel/sched/deadline.c:2579:15: sparse: sparse: dereference of noderef expression kernel/sched/deadline.c:2923:54: sparse: sparse: dereference of noderef expression kernel/sched/deadline.c:2923:54: sparse: sparse: dereference of noderef expression kernel/sched/deadline.c:2924:15: sparse: sparse: dereference of noderef expression kernel/sched/deadline.c:3046:50: sparse: sparse: dereference of noderef expression kernel/sched/deadline.c:3046:50: sparse: sparse: dereference of noderef expression kernel/sched/build_policy.c: note: in included file: >> kernel/sched/sched.h:2812:35: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@ kernel/sched/build_policy.c: note: in included file: kernel/sched/deadline.c:3086:16: sparse: sparse: dereference of noderef expression kernel/sched/deadline.c:3394:54: sparse: sparse: dereference of noderef expression kernel/sched/deadline.c:3394:54: sparse: sparse: dereference of noderef expression kernel/sched/build_policy.c: note: in included file: kernel/sched/syscalls.c:1307:11: sparse: sparse: dereference of noderef expression kernel/sched/build_policy.c: note: in included file: kernel/sched/rt.c:1665:15: sparse: sparse: dereference of noderef expression vim +2812 kernel/sched/sched.h 04746ed80bcf31 Ingo Molnar 2024-04-07 2809 a7c81556ec4d34 Peter Zijlstra 2020-09-28 2810 static inline struct task_struct *get_push_task(struct rq *rq) a7c81556ec4d34 Peter Zijlstra 2020-09-28 2811 { af0c8b2bf67b25 Peter Zijlstra 2024-10-09 @2812 struct task_struct *p = rq->donor; a7c81556ec4d34 Peter Zijlstra 2020-09-28 2813 5cb9eaa3d274f7 Peter Zijlstra 2020-11-17 2814 lockdep_assert_rq_held(rq); a7c81556ec4d34 Peter Zijlstra 2020-09-28 2815 a7c81556ec4d34 Peter Zijlstra 2020-09-28 2816 if (rq->push_busy) a7c81556ec4d34 Peter Zijlstra 2020-09-28 2817 return NULL; a7c81556ec4d34 Peter Zijlstra 2020-09-28 2818 a7c81556ec4d34 Peter Zijlstra 2020-09-28 2819 if (p->nr_cpus_allowed == 1) a7c81556ec4d34 Peter Zijlstra 2020-09-28 2820 return NULL; a7c81556ec4d34 Peter Zijlstra 2020-09-28 2821 e681dcbaa4b284 Sebastian Andrzej Siewior 2021-08-26 2822 if (p->migration_disabled) e681dcbaa4b284 Sebastian Andrzej Siewior 2021-08-26 2823 return NULL; e681dcbaa4b284 Sebastian Andrzej Siewior 2021-08-26 2824 a7c81556ec4d34 Peter Zijlstra 2020-09-28 2825 rq->push_busy = true; a7c81556ec4d34 Peter Zijlstra 2020-09-28 2826 return get_task_struct(p); a7c81556ec4d34 Peter Zijlstra 2020-09-28 2827 } a7c81556ec4d34 Peter Zijlstra 2020-09-28 2828 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki