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X-CSE-ConnectionGUID: gkggmwYBTaq+FowgwhhQ4w== X-CSE-MsgGUID: KNGN+P4gRXShCU0WyGObfw== X-IronPort-AV: E=McAfee;i="6800,10657,11678"; a="80930322" X-IronPort-AV: E=Sophos;i="6.21,245,1763452800"; d="scan'208";a="80930322" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by fmvoesa105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Jan 2026 00:04:46 -0800 X-CSE-ConnectionGUID: 4jcAYE2URme3cSNXb8gmdw== X-CSE-MsgGUID: llLIVkZ2RiijFYHAaIcviA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,245,1763452800"; d="scan'208";a="206577077" Received: from lkp-server01.sh.intel.com (HELO 765f4a05e27f) ([10.239.97.150]) by fmviesa006.fm.intel.com with ESMTP; 22 Jan 2026 00:04:44 -0800 Received: from kbuild by 765f4a05e27f with local (Exim 4.98.2) (envelope-from ) id 1vipgH-00000000SaL-3oTb; Thu, 22 Jan 2026 08:04:41 +0000 Date: Thu, 22 Jan 2026 16:04:37 +0800 From: kernel test robot To: Lorenzo Stoakes Cc: oe-kbuild-all@lists.linux.dev, David Hildenbrand , Andrew Morton , Linux Memory Management List Subject: [akpm-mm:mm-new 420/429] fs/romfs/mmap-nommu.c:66:42: sparse: sparse: dereference of noderef expression Message-ID: <202601221505.RxftadLx-lkp@intel.com> User-Agent: s-nail v14.9.25 X-Rspamd-Server: rspam12 X-Stat-Signature: ena5em1w5b76phqgrihp6uyogcushyzs X-Rspamd-Queue-Id: 5496640003 X-Rspam-User: X-HE-Tag: 1769069087-904570 X-HE-Meta: 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 rNzlVrIy UvOHfP8ceanditVuEm2HccumwA/wdOP2j5E4gBGCTU/dTXmbp+R6O5rh8yQFPfh9Ftpt+nZWvi0Cswy3q67bGTJj+kffYBjBFFXE7K5lTQspIMkz8iU11hrLj72n7g5K3OrM2BEHpTOxZgjisD9fy0C4yC4qJpVNewaWAcsEtostyM9faOtUfMJ1Ggz6Z6TynPoaVjGEtWGI5RuSnJMgHo6/BiMSkTTGl49Pbbd7guxz3fIIIEgDSMX7fwHJUfF2OuXXs9ZKJnJ7D3BDBCkFyXBfCUg== 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 Lorenzo, FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant. tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-new head: dc4fe40a11269aead253fa0beb098b00417b8694 commit: 57a654376d4bb67119d436edc8c3c4c0ecb3c369 [420/429] mm: update all remaining mmap_prepare users to use vma_flags_t config: sh-randconfig-r122-20260122 (https://download.01.org/0day-ci/archive/20260122/202601221505.RxftadLx-lkp@intel.com/config) compiler: sh4-linux-gcc (GCC) 13.4.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260122/202601221505.RxftadLx-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/202601221505.RxftadLx-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) >> fs/romfs/mmap-nommu.c:66:42: sparse: sparse: dereference of noderef expression >> fs/romfs/mmap-nommu.c:66:42: sparse: sparse: dereference of noderef expression fs/romfs/mmap-nommu.c: note: in included file: include/linux/mm.h:1954:16: sparse: sparse: dereference of noderef expression include/linux/mm.h:1954:16: sparse: sparse: dereference of noderef expression include/linux/mm.h:1048:16: sparse: sparse: dereference of noderef expression include/linux/mm.h:1954:16: sparse: sparse: dereference of noderef expression include/linux/mm.h:1048:16: sparse: sparse: dereference of noderef expression vim +66 fs/romfs/mmap-nommu.c 59 60 /* 61 * permit a R/O mapping to be made directly through onto an MTD device if 62 * possible 63 */ 64 static int romfs_mmap_prepare(struct vm_area_desc *desc) 65 { > 66 return is_nommu_shared_vma_flags(desc->vma_flags) ? 0 : -ENOSYS; 67 } 68 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki