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charset=us-ascii Content-Disposition: inline X-Rspamd-Queue-Id: 3E8A54000E X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: to4su3m6z8cciyua6x8karaytnredrai X-HE-Tag: 1696316210-656465 X-HE-Meta: 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 Duv7qLqv s6AR+ftkR62UDyxaUpjn6/Q1ydQACu5ePANPK4XFlm1Wt8jzFOf9jx1wR5fSTlDD/gZp2tRQh566uxnGV9ffciY4CUDdyFcqb5Su/fNwwz4PU0q2pfOSEgl2RAbufLSJBsGqMCvqe6n8RWdHdZ3VNhl/kjPDC2NG2yWIxThUXsYrnadpXwln6OTaNH0HBbRPtIS1y1CZAb4jzAoq9D22nmVArvdN4ccj3NcwgOeeadOTJjRoRIIIZ9fpztqiiBNVy+MlcYXU43FEEx53jLy30OQDbM9zxKrd9P3RHCTy3BEs6gfYpPQ+SAbGQEIw38yXi3/Z0LtHDw43MfdINVQkWMW0pidxg+lCOA7NUr63eKxBQrcAwDgL8+u82+vUD6zSO2j53EP0hL/P2xWc= 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: tree: https://git.kernel.org/pub/scm/linux/kernel/git/vbabka/linux.git slab-remove-slab-v1r0 head: 227c2d309e94ff014379c57ecadff7df03a1e349 commit: 175f421def9a7765457d1434f9df37303ff1ed9f [7/14] KASAN: remove code paths guarded by CONFIG_SLAB config: x86_64-randconfig-006-20231003 (https://download.01.org/0day-ci/archive/20231003/202310031433.kyisgGOt-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231003/202310031433.kyisgGOt-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/202310031433.kyisgGOt-lkp@intel.com/ All warnings (new ones prefixed by >>): mm/kasan/quarantine.c: In function 'qlink_free': >> mm/kasan/quarantine.c:145:23: warning: unused variable 'flags' [-Wunused-variable] 145 | unsigned long flags; | ^~~~~ vim +/flags +145 mm/kasan/quarantine.c 55834c59098d0c5 Alexander Potapenko 2016-05-20 140 55834c59098d0c5 Alexander Potapenko 2016-05-20 141 static void qlink_free(struct qlist_node *qlink, struct kmem_cache *cache) 55834c59098d0c5 Alexander Potapenko 2016-05-20 142 { 55834c59098d0c5 Alexander Potapenko 2016-05-20 143 void *object = qlink_to_object(qlink, cache); 26dca996ea7b1ac Andrey Konovalov 2022-01-14 144 struct kasan_free_meta *meta = kasan_get_free_meta(cache, object); 55834c59098d0c5 Alexander Potapenko 2016-05-20 @145 unsigned long flags; 55834c59098d0c5 Alexander Potapenko 2016-05-20 146 26dca996ea7b1ac Andrey Konovalov 2022-01-14 147 /* 26dca996ea7b1ac Andrey Konovalov 2022-01-14 148 * If init_on_free is enabled and KASAN's free metadata is stored in 26dca996ea7b1ac Andrey Konovalov 2022-01-14 149 * the object, zero the metadata. Otherwise, the object's memory will 26dca996ea7b1ac Andrey Konovalov 2022-01-14 150 * not be properly zeroed, as KASAN saves the metadata after the slab 26dca996ea7b1ac Andrey Konovalov 2022-01-14 151 * allocator zeroes the object. 26dca996ea7b1ac Andrey Konovalov 2022-01-14 152 */ 26dca996ea7b1ac Andrey Konovalov 2022-01-14 153 if (slab_want_init_on_free(cache) && 26dca996ea7b1ac Andrey Konovalov 2022-01-14 154 cache->kasan_info.free_meta_offset == 0) 26dca996ea7b1ac Andrey Konovalov 2022-01-14 155 memzero_explicit(meta, sizeof(*meta)); 26dca996ea7b1ac Andrey Konovalov 2022-01-14 156 97593cad003c668 Andrey Konovalov 2020-12-22 157 /* f0953a1bbaca71e Ingo Molnar 2021-05-06 158 * As the object now gets freed from the quarantine, assume that its 97593cad003c668 Andrey Konovalov 2020-12-22 159 * free track is no longer valid. 97593cad003c668 Andrey Konovalov 2020-12-22 160 */ 06bc4cf6cdde690 Andrey Konovalov 2022-05-12 161 *(u8 *)kasan_mem_to_shadow(object) = KASAN_SLAB_FREE; 97593cad003c668 Andrey Konovalov 2020-12-22 162 55834c59098d0c5 Alexander Potapenko 2016-05-20 163 ___cache_free(cache, object, _THIS_IP_); 55834c59098d0c5 Alexander Potapenko 2016-05-20 164 } 55834c59098d0c5 Alexander Potapenko 2016-05-20 165 :::::: The code at line 145 was first introduced by commit :::::: 55834c59098d0c5a97b0f3247e55832b67facdcf mm: kasan: initial memory quarantine implementation :::::: TO: Alexander Potapenko :::::: CC: Linus Torvalds -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki