From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.93]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C305D370; Sat, 9 Sep 2023 07:42:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694245379; x=1725781379; h=date:from:to:cc:subject:message-id:mime-version; bh=NclmO7jm8GCuBtnfe0rCb30mU5QcAy5J+UuCvIHvhnI=; b=VpOAiI3DHJBXItqH05Jnb+9W+dYOLjFSDWKwAlL1CUHgAeytN0QMw0IY +mUsCfayjerk1c8ljdg450K9p972EBvwduvmFx91vTg/Qvoje4Gg0SsMr bkxHALIqD2ogciPt0A+UrVcDWv06J3/9Rv8Wwbit46F9PV+SiDKoJh52s EO9KkTsLwy76Mvqr4nO9BjgjTHrnkVOfg9ZKL9l4X7TLRN3qop4jbwV54 vToa/o7MA47waaIm1yQGIPb5YMeQXB7wD+ISm2aWrqfn/qJNklHaQhWK9 z91eD1Jbz3Cv1ynNM9fJN0+xJkgTUCFJjE2PpEURdKopTxFTnwHIYANog A==; X-IronPort-AV: E=McAfee;i="6600,9927,10827"; a="375175460" X-IronPort-AV: E=Sophos;i="6.02,239,1688454000"; d="scan'208";a="375175460" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Sep 2023 00:42:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10827"; a="808261400" X-IronPort-AV: E=Sophos;i="6.02,239,1688454000"; d="scan'208";a="808261400" Received: from lkp-server01.sh.intel.com (HELO 59b3c6e06877) ([10.239.97.150]) by fmsmga008.fm.intel.com with ESMTP; 09 Sep 2023 00:42:52 -0700 Received: from kbuild by 59b3c6e06877 with local (Exim 4.96) (envelope-from ) id 1qescE-00035y-27; Sat, 09 Sep 2023 07:42:50 +0000 Date: Sat, 9 Sep 2023 15:42:17 +0800 From: kernel test robot To: Chuck Lever Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev Subject: [cel:topic-sunrpc-thread-scheduling 76/77] net/sunrpc/xprtrdma/svc_rdma_recvfrom.c:200:15: warning: variable 'count' set but not used Message-ID: <202309091510.lqtBu2f5-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: git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux topic-sunrpc-thread-scheduling head: fecdd17a8cd2f8d356bfc4f42b8c06af2d0506da commit: d0a489e1ee8c40fc0e984533dd4a2619bd5c3906 [76/77] svcrdma: Pre-allocate svc_rdma_recv_ctxt objects config: hexagon-randconfig-r022-20230909 (https://download.01.org/0day-ci/archive/20230909/202309091510.lqtBu2f5-lkp@intel.com/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230909/202309091510.lqtBu2f5-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/202309091510.lqtBu2f5-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from net/sunrpc/xprtrdma/svc_rdma_recvfrom.c:98: In file included from include/rdma/ib_verbs.h:15: In file included from include/linux/ethtool.h:18: In file included from include/linux/if_ether.h:19: In file included from include/linux/skbuff.h:17: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 547 | val = __raw_readb(PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 560 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' 37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) | ^ In file included from net/sunrpc/xprtrdma/svc_rdma_recvfrom.c:98: In file included from include/rdma/ib_verbs.h:15: In file included from include/linux/ethtool.h:18: In file included from include/linux/if_ether.h:19: In file included from include/linux/skbuff.h:17: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 573 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' 35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) | ^ In file included from net/sunrpc/xprtrdma/svc_rdma_recvfrom.c:98: In file included from include/rdma/ib_verbs.h:15: In file included from include/linux/ethtool.h:18: In file included from include/linux/if_ether.h:19: In file included from include/linux/skbuff.h:17: In file included from include/linux/bvec.h:10: In file included from include/linux/highmem.h:12: In file included from include/linux/hardirq.h:11: In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 584 | __raw_writeb(value, PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 594 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ >> net/sunrpc/xprtrdma/svc_rdma_recvfrom.c:200:15: warning: variable 'count' set but not used [-Wunused-but-set-variable] 200 | unsigned int count; | ^ 7 warnings generated. vim +/count +200 net/sunrpc/xprtrdma/svc_rdma_recvfrom.c 190 191 /** 192 * svc_rdma_recv_ctxts_destroy - Release all recv_ctxt's for an xprt 193 * @rdma: svcxprt_rdma being torn down 194 * 195 */ 196 void svc_rdma_recv_ctxts_destroy(struct svcxprt_rdma *rdma) 197 { 198 struct svc_rdma_recv_ctxt *ctxt; 199 struct llist_node *node; > 200 unsigned int count; 201 202 count = 0; 203 while ((node = llist_del_first(&rdma->sc_recv_ctxts))) { 204 ctxt = llist_entry(node, struct svc_rdma_recv_ctxt, rc_node); 205 svc_rdma_recv_ctxt_destroy(rdma, ctxt); 206 ++count; 207 } 208 } 209 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki