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X-CSE-ConnectionGUID: feisLU6jSq69ypJ6R6Adlw== X-CSE-MsgGUID: T1DzSevkRlayR3aa7W+NQA== X-IronPort-AV: E=McAfee;i="6700,10204,11180"; a="23842779" X-IronPort-AV: E=Sophos;i="6.10,189,1719903600"; d="scan'208";a="23842779" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by orvoesa110.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Aug 2024 13:36:40 -0700 X-CSE-ConnectionGUID: URl1aozoRTW2utyAKTDM7Q== X-CSE-MsgGUID: Zw3/5HLeSCGvQt6RVWSIvA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,189,1719903600"; d="scan'208";a="64754724" Received: from lkp-server01.sh.intel.com (HELO 9c6b1c7d3b50) ([10.239.97.150]) by orviesa008.jf.intel.com with ESMTP; 30 Aug 2024 13:36:37 -0700 Received: from kbuild by 9c6b1c7d3b50 with local (Exim 4.96) (envelope-from ) id 1sk8ME-00025I-2u; Fri, 30 Aug 2024 20:36:34 +0000 Date: Sat, 31 Aug 2024 04:36:13 +0800 From: kernel test robot To: Andrii Nakryiko , linux-trace-kernel@vger.kernel.org, peterz@infradead.org, oleg@redhat.com Cc: oe-kbuild-all@lists.linux.dev, rostedt@goodmis.org, mhiramat@kernel.org, bpf@vger.kernel.org, linux-kernel@vger.kernel.org, jolsa@kernel.org, paulmck@kernel.org, willy@infradead.org, surenb@google.com, akpm@linux-foundation.org, linux-mm@kvack.org, Andrii Nakryiko Subject: Re: [PATCH v4 8/8] uprobes: switch to RCU Tasks Trace flavor for better performance Message-ID: <202408310111.2dkrylJ9-lkp@intel.com> References: <20240829183741.3331213-9-andrii@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240829183741.3331213-9-andrii@kernel.org> X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: D153B20018 X-Stat-Signature: qkag1rgdi3rnfjkr449p6r5m1uza8zo1 X-HE-Tag: 1725050201-687269 X-HE-Meta: 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 C27Hm+p1 +pnjZcPy6QhlJR0znkOxmUugbjDcA2anghK7iRU5Rx2j5o2er9TU0hJQFFgdotmRcKD2ZeuB6WLtXVFU1tVZhBauk3+HTB6pV9QEFT3IRArNhQNdG2bkKSQfSQmw2z5uKRBV5f3wLQxZcntQJX70bJAAOLrWZU5lv0nbDOAdaIHTHw6vSN4RGvCpuKlDnkANnB/3prBG7/X7s1spVODx6B+Jef2r73W8KmZRE2+g3pPDaH66T2LrIZguZ8YE6dNh/5QBJijP0AuTX9i4Xv4et81YBuLEkrptNnN0xMIgMqwgcFoJWKcSKmE6LzZY49iDgROnUUFDUkwYSLRWr/n1U4w6hojOmVIsj/qHn X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi Andrii, kernel test robot noticed the following build errors: [auto build test ERROR on tip/perf/core] [also build test ERROR on next-20240830] [cannot apply to perf-tools-next/perf-tools-next perf-tools/perf-tools linus/master acme/perf/core v6.11-rc5] [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/Andrii-Nakryiko/uprobes-revamp-uprobe-refcounting-and-lifetime-management/20240830-024135 base: tip/perf/core patch link: https://lore.kernel.org/r/20240829183741.3331213-9-andrii%40kernel.org patch subject: [PATCH v4 8/8] uprobes: switch to RCU Tasks Trace flavor for better performance config: x86_64-defconfig (https://download.01.org/0day-ci/archive/20240831/202408310111.2dkrylJ9-lkp@intel.com/config) compiler: gcc-11 (Debian 11.3.0-12) 11.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240831/202408310111.2dkrylJ9-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/202408310111.2dkrylJ9-lkp@intel.com/ All errors (new ones prefixed by >>): kernel/events/uprobes.c: In function 'uprobe_unregister_sync': >> kernel/events/uprobes.c:1157:9: error: implicit declaration of function 'synchronize_rcu_tasks_trace'; did you mean 'synchronize_rcu_tasks'? [-Werror=implicit-function-declaration] 1157 | synchronize_rcu_tasks_trace(); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ | synchronize_rcu_tasks cc1: some warnings being treated as errors vim +1157 kernel/events/uprobes.c 1145 1146 void uprobe_unregister_sync(void) 1147 { 1148 /* 1149 * Now that handler_chain() and handle_uretprobe_chain() iterate over 1150 * uprobe->consumers list under RCU protection without holding 1151 * uprobe->register_rwsem, we need to wait for RCU grace period to 1152 * make sure that we can't call into just unregistered 1153 * uprobe_consumer's callbacks anymore. If we don't do that, fast and 1154 * unlucky enough caller can free consumer's memory and cause 1155 * handler_chain() or handle_uretprobe_chain() to do an use-after-free. 1156 */ > 1157 synchronize_rcu_tasks_trace(); 1158 } 1159 EXPORT_SYMBOL_GPL(uprobe_unregister_sync); 1160 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki