4.14-stable review patch. If anyone has any objections, please let me know.
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From: Nigel Croxon ncroxon@redhat.com
[ Upstream commit df203da47f4428bc286fc99318936416253a321c ]
There is a compile error when this commit is added: md: raid1: fix potential OOB in raid1_remove_disk()
drivers/md/raid1.c: In function 'raid1_remove_disk': drivers/md/raid1.c:1844:9: error: ISO C90 forbids mixed declarations and code [-Werror=declaration-after-statement] 1844 | struct raid1_info *p = conf->mirrors + number; | ^~~~~~
That's because the new code was inserted before the struct. The change is move the struct command above this commit.
Fixes: 8b0472b50bcf ("md: raid1: fix potential OOB in raid1_remove_disk()") Signed-off-by: Nigel Croxon ncroxon@redhat.com Signed-off-by: Song Liu song@kernel.org Link: https://lore.kernel.org/r/46d929d0-2aab-4cf2-b2bf-338963e8ba5a@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/md/raid1.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 3e54b6639e213..7e37e4b2ec6ae 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1775,12 +1775,11 @@ static int raid1_remove_disk(struct mddev *mddev, struct md_rdev *rdev) struct r1conf *conf = mddev->private; int err = 0; int number = rdev->raid_disk; + struct raid1_info *p = conf->mirrors + number;
if (unlikely(number >= conf->raid_disks)) goto abort;
- struct raid1_info *p = conf->mirrors + number; - if (rdev != p->rdev) p = conf->mirrors + conf->raid_disks + number;