On Tue, Jul 26, 2022 at 1:33 AM Mikulas Patocka <mpatocka@xxxxxxxxxx> wrote: > > There's a KASAN warning in raid10_remove_disk when running the lvm > test lvconvert-raid-reshape.sh. We fix this warning by verifying that the > value "number" is valid. > [...] > ffff889108f3d380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc > ffff889108f3d400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > > Signed-off-by: Mikulas Patocka <mpatocka@xxxxxxxxxx> > Cc: stable@xxxxxxxxxxxxxxx Applied to md-next. Thanks! Song > > --- > drivers/md/raid10.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > Index: linux-2.6/drivers/md/raid10.c > =================================================================== > --- linux-2.6.orig/drivers/md/raid10.c 2022-07-13 19:05:50.000000000 +0200 > +++ linux-2.6/drivers/md/raid10.c 2022-07-13 19:07:05.000000000 +0200 > @@ -2167,9 +2167,12 @@ static int raid10_remove_disk(struct mdd > int err = 0; > int number = rdev->raid_disk; > struct md_rdev **rdevp; > - struct raid10_info *p = conf->mirrors + number; > + struct raid10_info *p; > > print_conf(conf); > + if (unlikely(number >= mddev->raid_disks)) > + return 0; > + p = conf->mirrors + number; > if (rdev == p->rdev) > rdevp = &p->rdev; > else if (rdev == p->replacement) > -- dm-devel mailing list dm-devel@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/dm-devel
