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Date: Mon, 21 Feb 2022 20:21:49 +0300 From: Dan Carpenter <dan.carpenter@...cle.com> To: kbuild@...ts.01.org, Jens Axboe <axboe@...nel.dk> Cc: lkp@...el.com, kbuild-all@...ts.01.org, GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>, linux-kernel@...r.kernel.org Subject: [ammarfaizi2-block:axboe/linux-block/perf-wip 5/17] drivers/md/bcache/util.c:256 bch_bio_map() error: uninitialized symbol 'page'. tree: https://github.com/ammarfaizi2/linux-block axboe/linux-block/perf-wip head: 653193284c45da1c727d45de716d9b48b1019e66 commit: 97f573494a3c088d6e249ddccdbb238b3ea267e0 [5/17] block: add bvec_set_page() helper config: arm-randconfig-m031-20220220 (https://download.01.org/0day-ci/archive/20220221/202202212347.2BTScWAC-lkp@intel.com/config) compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@...el.com> Reported-by: Dan Carpenter <dan.carpenter@...cle.com> smatch warnings: drivers/md/bcache/util.c:256 bch_bio_map() error: uninitialized symbol 'page'. vim +/page +256 drivers/md/bcache/util.c 169ef1cf6171d3 Kent Overstreet 2013-03-28 231 void bch_bio_map(struct bio *bio, void *base) cafe563591446c Kent Overstreet 2013-03-23 232 { 4f024f3797c43c Kent Overstreet 2013-10-11 233 size_t size = bio->bi_iter.bi_size; cafe563591446c Kent Overstreet 2013-03-23 234 struct bio_vec *bv = bio->bi_io_vec; 97f573494a3c08 Jens Axboe 2021-10-12 235 unsigned int len, offset; 97f573494a3c08 Jens Axboe 2021-10-12 236 struct page *page; cafe563591446c Kent Overstreet 2013-03-23 237 4f024f3797c43c Kent Overstreet 2013-10-11 238 BUG_ON(!bio->bi_iter.bi_size); cafe563591446c Kent Overstreet 2013-03-23 239 BUG_ON(bio->bi_vcnt); cafe563591446c Kent Overstreet 2013-03-23 240 97f573494a3c08 Jens Axboe 2021-10-12 241 offset = base ? offset_in_page(base) : 0; cafe563591446c Kent Overstreet 2013-03-23 242 goto start; cafe563591446c Kent Overstreet 2013-03-23 243 cafe563591446c Kent Overstreet 2013-03-23 244 for (; size; bio->bi_vcnt++, bv++) { 97f573494a3c08 Jens Axboe 2021-10-12 245 offset = 0; 97f573494a3c08 Jens Axboe 2021-10-12 246 start: 97f573494a3c08 Jens Axboe 2021-10-12 247 len = min_t(size_t, PAGE_SIZE - offset, size); cafe563591446c Kent Overstreet 2013-03-23 248 if (base) { 97f573494a3c08 Jens Axboe 2021-10-12 249 page = is_vmalloc_addr(base) cafe563591446c Kent Overstreet 2013-03-23 250 ? vmalloc_to_page(base) cafe563591446c Kent Overstreet 2013-03-23 251 : virt_to_page(base); cafe563591446c Kent Overstreet 2013-03-23 252 97f573494a3c08 Jens Axboe 2021-10-12 253 base += len; cafe563591446c Kent Overstreet 2013-03-23 254 } No else path. cafe563591446c Kent Overstreet 2013-03-23 255 97f573494a3c08 Jens Axboe 2021-10-12 @256 bvec_set_page(bv, page, len, offset); ^^^^ 97f573494a3c08 Jens Axboe 2021-10-12 257 size -= len; cafe563591446c Kent Overstreet 2013-03-23 258 } cafe563591446c Kent Overstreet 2013-03-23 259 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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