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BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev TO: cros-kernel-buildreports@googlegroups.com tree: https://android.googlesource.com/kernel/common android14-5.15-2026-10 head: 05be85d1a8b5b298b37833e869b7bcb986f054a1 commit: 7ec9a45fc4ee7fc1054c2cabf8b09a6bc708472e [10/10] block: handle bio_split_to_limits() NULL return :::::: branch date: 7 hours ago :::::: commit date: 3 years, 10 months ago config: arm64-randconfig-2200-20261109 (https://download.01.org/0day-ci/archive/20261110/202611100654.fRKuoEUU-lkp@intel.com/config) compiler: aarch64-linux-gcc (GCC) 10.5.0 smatch: v0.5.0-9187-g5189e3fb 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 | Reported-by: Dan Carpenter | Closes: https://lore.kernel.org/r/202611100654.fRKuoEUU-lkp@intel.com/ New smatch warnings: drivers/block/drbd/drbd_req.c:1605 drbd_submit_bio() warn: variable dereferenced before check 'bio' (see line 1602) Old smatch warnings: drivers/block/drbd/drbd_req.c:238 drbd_req_complete() warn: passing zero to 'PTR_ERR' vim +/bio +1605 drivers/block/drbd/drbd_req.c 113fef9e20e0d61 Lars Ellenberg 2013-03-22 1599 c62b37d96b6eb3e Christoph Hellwig 2020-07-01 1600 blk_qc_t drbd_submit_bio(struct bio *bio) b411b3637fa71fc Philipp Reisner 2009-09-25 1601 { 309dca309fc39a9 Christoph Hellwig 2021-01-24 @1602 struct drbd_device *device = bio->bi_bdev->bd_disk->private_data; 9a25a04c8079725 Philipp Reisner 2010-05-10 1603 f695ca3886ce72b Christoph Hellwig 2020-07-01 1604 blk_queue_split(&bio); 7ec9a45fc4ee7fc Jens Axboe 2023-01-04 @1605 if (!bio) 7ec9a45fc4ee7fc Jens Axboe 2023-01-04 1606 return BLK_QC_T_NONE; 54efd50bfd873e2 Kent Overstreet 2015-04-23 1607 b411b3637fa71fc Philipp Reisner 2009-09-25 1608 /* b411b3637fa71fc Philipp Reisner 2009-09-25 1609 * what we "blindly" assume: b411b3637fa71fc Philipp Reisner 2009-09-25 1610 */ 0b0ba1efc7b887b Andreas Gruenbacher 2011-06-27 1611 D_ASSERT(device, IS_ALIGNED(bio->bi_iter.bi_size, 512)); 9a25a04c8079725 Philipp Reisner 2010-05-10 1612 b30ab7913b0a7b1 Andreas Gruenbacher 2011-07-03 1613 inc_ap_bio(device); 370276bac8ec6f7 Guoqing Jiang 2021-01-21 1614 __drbd_make_request(device, bio); dece16353ef47d8 Jens Axboe 2015-11-05 1615 return BLK_QC_T_NONE; b411b3637fa71fc Philipp Reisner 2009-09-25 1616 } b411b3637fa71fc Philipp Reisner 2009-09-25 1617 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki