[kbuild-all] [song-md:md-next 5/6] drivers/md/raid10.c:1526:8-27: atomic_dec_and_test variation before object free at line 1532.

tree: git://git.kernel.org/pub/scm/linux/kernel/git/song/md.git md-next head: 49c4d345c81f149a29b3db6e521e5191e55f02b6 commit: f3cf8c2b2caf6ae77b7c786218d3b060faef63a6 [5/6] md/raid10: improve discard request for far layout config: x86_64-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; "coccinelle warnings: (new ones prefixed by >>)" drivers/md/raid10.c:1526:8-27: atomic_dec_and_test variation before object free at line 1537. vim +1526 drivers/md/raid10.c 1520 1521 static void raid_end_discard_bio(struct r10bio *r10bio) 1522 { 1523 struct r10conf *conf = r10bio->mddev->private; 1524 struct r10bio *first_r10bio; 1525 1527 1528 allow_barrier(conf); 1529 1530 if (!test_bit(R10BIO_Discard, &r10bio->state)) { 1531 first_r10bio = (struct r10bio *)r10bio->master_bio; 1533 r10bio = first_r10bio; 1534 } else { 1535 md_write_end(r10bio->mddev); 1536 bio_endio(r10bio->master_bio); 1537 free_r10bio(r10bio); 1538 break; 1539 } 1540 } 1541 } 1542 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org