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X-CSE-ConnectionGUID: qhbLVYEkQS+A8xDDe3Sb2g== X-CSE-MsgGUID: oKQbPCI+R0qU1moUwLfGVQ== X-IronPort-AV: E=McAfee;i="6800,10657,11742"; a="74767992" X-IronPort-AV: E=Sophos;i="6.23,145,1770624000"; d="scan'208";a="74767992" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Mar 2026 17:12:00 -0700 X-CSE-ConnectionGUID: u+F67PG8S0iHkQHtwbVIcA== X-CSE-MsgGUID: SNyrNkVgQaWl9sRQQCvXng== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,145,1770624000"; d="scan'208";a="220608112" Received: from igk-lkp-server01.igk.intel.com (HELO 9958d990ccf2) ([10.211.93.152]) by fmviesa006.fm.intel.com with ESMTP; 27 Mar 2026 17:11:58 -0700 Received: from kbuild by 9958d990ccf2 with local (Exim 4.98.2) (envelope-from ) id 1w6HHQ-000000007aX-0zwr; Sat, 28 Mar 2026 00:11:56 +0000 Date: Sat, 28 Mar 2026 01:11:18 +0100 From: kernel test robot To: David Howells Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev Subject: [dhowells-fs:netfs-next 26/26] fs/9p/vfs_addr.c:79:6: warning: variable 'len' is used uninitialized whenever 'if' condition is true Message-ID: <202603280121.jYMFC0hC-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: tree: https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git netfs-next head: 13e05ee43d1290bb487ef5318b4d2d27be8ce4b5 commit: 13e05ee43d1290bb487ef5318b4d2d27be8ce4b5 [26/26] netfs: Combine prepare and issue ops and grab the buffers on request config: x86_64-kexec (https://download.01.org/0day-ci/archive/20260328/202603280121.jYMFC0hC-lkp@intel.com/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260328/202603280121.jYMFC0hC-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/202603280121.jYMFC0hC-lkp@intel.com/ All warnings (new ones prefixed by >>): >> fs/9p/vfs_addr.c:79:6: warning: variable 'len' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized] 79 | if (err < 0) | ^~~~~~~ fs/9p/vfs_addr.c:90:51: note: uninitialized use occurs here 90 | return netfs_write_subrequest_terminated(subreq, len ?: err); | ^~~ fs/9p/vfs_addr.c:79:2: note: remove the 'if' if its condition is always false 79 | if (err < 0) | ^~~~~~~~~~~~ 80 | goto term; | ~~~~~~~~~ fs/9p/vfs_addr.c:74:14: note: initialize the variable 'len' to silence this warning 74 | int err, len; | ^ | = 0 1 warning generated. -- fs/netfs/buffered_read.c:226:26: warning: unused variable 'stream' [-Wunused-variable] 226 | struct netfs_io_stream *stream = &rreq->io_streams[0]; | ^~~~~~ >> fs/netfs/buffered_read.c:223:6: warning: no previous prototype for function 'netfs_mark_read_submission' [-Wmissing-prototypes] 223 | void netfs_mark_read_submission(struct netfs_io_subrequest *subreq) | ^ fs/netfs/buffered_read.c:223:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 223 | void netfs_mark_read_submission(struct netfs_io_subrequest *subreq) | ^ | static 2 warnings generated. vim +79 fs/9p/vfs_addr.c 66 67 /* 68 * Issue a subrequest to write to the server. 69 */ 70 static void v9fs_issue_write(struct netfs_io_subrequest *subreq) 71 { 72 struct iov_iter iter; 73 struct p9_fid *fid = subreq->rreq->netfs_priv; 74 int err, len; 75 76 subreq->len = umin(subreq->len, fid->clnt->msize - P9_IOHDRSZ); 77 78 err = netfs_prepare_write_buffer(subreq, INT_MAX); > 79 if (err < 0) 80 goto term; 81 82 iov_iter_bvec_queue(&iter, ITER_SOURCE, subreq->content.bvecq, 83 subreq->content.slot, subreq->content.offset, subreq->len); 84 85 len = p9_client_write(fid, subreq->start, &iter, &err); 86 if (len > 0) 87 __set_bit(NETFS_SREQ_MADE_PROGRESS, &subreq->flags); 88 89 term: 90 return netfs_write_subrequest_terminated(subreq, len ?: err); 91 } 92 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki