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From: Hao Ge In-Reply-To: <202603291211.YhY0R0se-lkp@intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Migadu-Flow: FLOW_OUT X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 3C4714000A X-Stat-Signature: iaji8sf6q7ajucbq9w3fy5zpizo745f8 X-HE-Tag: 1774946985-152024 X-HE-Meta: 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 j+4CJkcg dDZQXyA7ifXHIRrPG55HOFQ7yKd/lPQJbiqzVL3Oh5ZckDprO33rHUFMUB8wdUs68pviDLhTw/YbcEIfnE9ywN36+zYqQeVXs1rtm1605C2CvlW+Pgv92ri7A7F3Zyw+4l9EuETNu27Um6/20/kE8fJtk5Hu/FSX2eW6rirm4kg9LbNCY5LZi3imDgCDs7BWWkBkLTLGQCLFt/rTOoWeextekifLjGN7H3tOaFHWtdPeWFmlhRWdt1sSIOiurI+Ashqb0lApuZB5k7zy2s8QVmq8w4gafnmwGEJBk/LovCZrk0SOano54tUkg+qCt6zsRMTtRJWj0Q05DNLbUW6itlYu659FpCACUmtIO8fVCFa6y3Oc= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi On 2026/3/29 12:36, kernel test robot wrote: > 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 > Thanks. The v4 patch I've just posted has fixed the issue. Thanks for your report. Thanks Hao