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X-CSE-ConnectionGUID: WNxLbxetT3Wp6w7fzckWJg== X-CSE-MsgGUID: CwnVrJbZR8yPaNP0akiXKw== X-IronPort-AV: E=McAfee;i="6800,10657,11742"; a="79646717" X-IronPort-AV: E=Sophos;i="6.23,147,1770624000"; d="scan'208";a="79646717" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orvoesa106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Mar 2026 21:37:25 -0700 X-CSE-ConnectionGUID: IwQuR/VvRLqziO7tz9LFkw== X-CSE-MsgGUID: verF6TuPTMaYnXjUyKIDlg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,147,1770624000"; d="scan'208";a="263650748" Received: from lkp-server01.sh.intel.com (HELO 3905d212be1b) ([10.239.97.150]) by orviesa001.jf.intel.com with ESMTP; 28 Mar 2026 21:37:24 -0700 Received: from kbuild by 3905d212be1b with local (Exim 4.98.2) (envelope-from ) id 1w6htp-00000000C4r-0LWi; Sun, 29 Mar 2026 04:37:21 +0000 Date: Sun, 29 Mar 2026 12:36:27 +0800 From: kernel test robot To: Hao Ge Cc: oe-kbuild-all@lists.linux.dev, David Hildenbrand , Andrew Morton , Linux Memory Management List Subject: [akpm-mm:mm-new 193/194] lib/alloc_tag.c:815:25: sparse: sparse: cast removes address space '__rcu' of expression Message-ID: <202603291211.YhY0R0se-lkp@intel.com> User-Agent: s-nail v14.9.25 X-Rspamd-Queue-Id: 0909040005 X-Stat-Signature: b9qq7b5gwypeqptxsr3uqhau4yga8n11 X-Rspam-User: X-Rspamd-Server: rspam02 X-HE-Tag: 1774759046-869194 X-HE-Meta: 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 WwGrsz2l xF75gMEuo3Uia7WkeRGtaSvjIsjjDkLE7jzkz0fJ649WQbYkVkrkcg23JmTMURLzDTKUxe9jeFpG47v9qUFADNXDfC0MMaTN0lXpCP+X+Y5dlcV1iII09ZNjZOUCAFCyf9pkcDZwbIqjwc1F6RxXQaOuf5qFrbCU+AGWYRxlgBOCdFhqykhlNIIzXETmI4NDVxVpiVVKiYsvrgpIT7KppDKesllFh3YGwp6jEzsDg1521hhhVoqcPynfos2zINMwk2vd4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-new head: df2267b6380964f1305128001f05bc043ddf1f37 commit: 8bee7b4b574f880ff2c7491212e2ef01cd82f2fd [193/194] mm/alloc_tag: clear codetag for pages allocated before page_ext initialization config: openrisc-randconfig-r121-20260329 (https://download.01.org/0day-ci/archive/20260329/202603291211.YhY0R0se-lkp@intel.com/config) compiler: or1k-linux-gcc (GCC) 10.5.0 sparse: v0.6.5-rc1 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260329/202603291211.YhY0R0se-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/202603291211.YhY0R0se-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) >> lib/alloc_tag.c:815:25: sparse: sparse: cast removes address space '__rcu' of expression >> lib/alloc_tag.c:815:25: sparse: sparse: incompatible types in comparison expression (different address spaces): lib/alloc_tag.c:815:25: sparse: void ( [noderef] __rcu * )( ... ) lib/alloc_tag.c:815:25: sparse: void ( * )( ... ) lib/alloc_tag.c:828:9: sparse: sparse: incompatible types in comparison expression (different address spaces): lib/alloc_tag.c:828:9: sparse: void ( [noderef] __rcu * )( ... ) lib/alloc_tag.c:828:9: sparse: void ( * )( ... ) vim +/__rcu +815 lib/alloc_tag.c 802 803 typedef void (*alloc_tag_add_func)(unsigned long pfn); 804 static alloc_tag_add_func __rcu alloc_tag_add_early_pfn_ptr __refdata = 805 __alloc_tag_add_early_pfn; 806 807 void alloc_tag_add_early_pfn(unsigned long pfn) 808 { 809 alloc_tag_add_func alloc_tag_add; 810 811 if (static_key_enabled(&mem_profiling_compressed)) 812 return; 813 814 rcu_read_lock(); > 815 alloc_tag_add = rcu_dereference(alloc_tag_add_early_pfn_ptr); 816 if (alloc_tag_add) 817 alloc_tag_add(pfn); 818 rcu_read_unlock(); 819 } 820 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki