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d="scan'208";a="356584875" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Jul 2023 20:11:36 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10776"; a="718218558" X-IronPort-AV: E=Sophos;i="6.01,216,1684825200"; d="scan'208";a="718218558" Received: from lkp-server02.sh.intel.com (HELO 36946fcf73d7) ([10.239.97.151]) by orsmga007.jf.intel.com with ESMTP; 19 Jul 2023 20:11:34 -0700 Received: from kbuild by 36946fcf73d7 with local (Exim 4.96) (envelope-from ) id 1qMK4Z-0005jE-1M; Thu, 20 Jul 2023 03:11:24 +0000 Date: Thu, 20 Jul 2023 11:10:55 +0800 From: kernel test robot To: Varun Prakash Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Christoph Hellwig , Sagi Grimberg Subject: drivers/nvme/host/tcp.c:835:12: warning: stack frame size (2256) exceeds limit (2048) in 'nvme_tcp_recv_skb' Message-ID: <202307201141.PYWS6ird-lkp@intel.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 tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: bfa3037d828050896ae52f6467b6ca2489ae6fb1 commit: c2700d2886a87f83f31e0a301de1d2350b52c79b nvme-tcp: send H2CData PDUs based on MAXH2CDATA date: 1 year, 5 months ago config: riscv-randconfig-r042-20230720 (https://download.01.org/0day-ci/archive/20230720/202307201141.PYWS6ird-lkp@intel.com/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a) reproduce: (https://download.01.org/0day-ci/archive/20230720/202307201141.PYWS6ird-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/202307201141.PYWS6ird-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/nvme/host/tcp.c:835:12: warning: stack frame size (2256) exceeds limit (2048) in 'nvme_tcp_recv_skb' [-Wframe-larger-than] 835 | static int nvme_tcp_recv_skb(read_descriptor_t *desc, struct sk_buff *skb, | ^ 1 warning generated. vim +/nvme_tcp_recv_skb +835 drivers/nvme/host/tcp.c 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 834 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 @835 static int nvme_tcp_recv_skb(read_descriptor_t *desc, struct sk_buff *skb, 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 836 unsigned int offset, size_t len) 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 837 { 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 838 struct nvme_tcp_queue *queue = desc->arg.data; 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 839 size_t consumed = len; 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 840 int result; 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 841 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 842 while (len) { 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 843 switch (nvme_tcp_recv_state(queue)) { 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 844 case NVME_TCP_RECV_PDU: 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 845 result = nvme_tcp_recv_pdu(queue, skb, &offset, &len); 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 846 break; 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 847 case NVME_TCP_RECV_DATA: 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 848 result = nvme_tcp_recv_data(queue, skb, &offset, &len); 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 849 break; 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 850 case NVME_TCP_RECV_DDGST: 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 851 result = nvme_tcp_recv_ddgst(queue, skb, &offset, &len); 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 852 break; 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 853 default: 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 854 result = -EFAULT; 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 855 } 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 856 if (result) { 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 857 dev_err(queue->ctrl->ctrl.device, 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 858 "receive failed: %d\n", result); 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 859 queue->rd_enabled = false; 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 860 nvme_tcp_error_recovery(&queue->ctrl->ctrl); 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 861 return result; 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 862 } 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 863 } 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 864 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 865 return consumed; 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 866 } 3f2304f8c6d6ed Sagi Grimberg 2018-12-03 867 :::::: The code at line 835 was first introduced by commit :::::: 3f2304f8c6d6ed97849057bd16fee99e434ca796 nvme-tcp: add NVMe over TCP host driver :::::: TO: Sagi Grimberg :::::: CC: Christoph Hellwig -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki