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X-CSE-ConnectionGUID: 0k75dzaRQpmpOTyBMVyx7Q== X-CSE-MsgGUID: Ll+RLEpHRU2le7PwQYQITQ== X-IronPort-AV: E=McAfee;i="6700,10204,11180"; a="26588825" X-IronPort-AV: E=Sophos;i="6.10,189,1719903600"; d="scan'208";a="26588825" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Aug 2024 10:42:27 -0700 X-CSE-ConnectionGUID: Qrn7kCy4TTmPY7lfTIiV5Q== X-CSE-MsgGUID: hveFh9znS2aLYY//6xr4tA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,189,1719903600"; d="scan'208";a="64713167" Received: from lkp-server01.sh.intel.com (HELO 9c6b1c7d3b50) ([10.239.97.150]) by orviesa008.jf.intel.com with ESMTP; 30 Aug 2024 10:42:23 -0700 Received: from kbuild by 9c6b1c7d3b50 with local (Exim 4.96) (envelope-from ) id 1sk5dc-0001la-2H; Fri, 30 Aug 2024 17:42:20 +0000 Date: Sat, 31 Aug 2024 01:41:46 +0800 From: kernel test robot To: Andrii Nakryiko , linux-trace-kernel@vger.kernel.org, peterz@infradead.org, oleg@redhat.com Cc: llvm@lists.linux.dev, 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: <202408310130.t9EBKteQ-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-Stat-Signature: 9swhsccwk3946eg8oahq75t6gfin3uxq X-Rspamd-Queue-Id: 962B5140011 X-Rspam-User: X-Rspamd-Server: rspam10 X-HE-Tag: 1725039748-852470 X-HE-Meta: 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 1G4KlUnw pxmMRyyxSA6B3m2W24H18MVYJiKqUpAz3MRl4rPmZhy6fGiZgRFRS47z8/nKhzhawYM9/RGEQZBx5lMQ6sVndv/9cvlNzK29doePeaLWxKHqBtHJ4EEWzrx0nobhH/Mp6K2zXNM53SUcrCWKxl8HvKGFDnQluwrr+G/2O80w5httb+lAlrbRm4/lRo8TxHHd+MAP12jVBOjE/VOamFx3S3BRgf8wDOu6GntgOoiaJ0MDsdExP2ITIXrOYTlfkvivoTBoH1FJ7UXQh/B31Q4tJdmHj1fQvsEPhiQqtILC9aAWqtAs/qvHCoygXB3Ti3VQom0NvXuedilaUbgOVBY1Tno1UNhMerBIQEplA 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: i386-buildonly-randconfig-004-20240830 (https://download.01.org/0day-ci/archive/20240831/202408310130.t9EBKteQ-lkp@intel.com/config) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240831/202408310130.t9EBKteQ-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/202408310130.t9EBKteQ-lkp@intel.com/ All errors (new ones prefixed by >>): >> kernel/events/uprobes.c:1157:2: error: call to undeclared function 'synchronize_rcu_tasks_trace'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 1157 | synchronize_rcu_tasks_trace(); | ^ kernel/events/uprobes.c:1157:2: note: did you mean 'synchronize_rcu_tasks_rude'? include/linux/rcupdate.h:206:6: note: 'synchronize_rcu_tasks_rude' declared here 206 | void synchronize_rcu_tasks_rude(void); | ^ 1 error generated. vim +/synchronize_rcu_tasks_trace +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