3.8.13.5 -stable review patch. If anyone has any objections, please let me know.
------------------ From: NeilBrown <[email protected]> commit 78eaa0d4cbcdb345992fa3dd22b3bcbb473cc064 upstream. 1/ If a RAID10 is being reshaped to a fewer number of devices and is stopped while this is ongoing, then when the array is reassembled the 'mirrors' array will be allocated too small. This will lead to an access error or memory corruption. 2/ A sanity test for a reshaping RAID10 array is restarted is slightly incorrect. Due to the first bug, this is suitable for any -stable kernel since 3.5 where this code was introduced. Signed-off-by: NeilBrown <[email protected]> Signed-off-by: Luis Henriques <[email protected]> --- drivers/md/raid10.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 2f4be3c..7187dbd 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -3501,7 +3501,7 @@ static struct r10conf *setup_conf(struct mddev *mddev) /* FIXME calc properly */ conf->mirrors = kzalloc(sizeof(struct raid10_info)*(mddev->raid_disks + - max(0,mddev->delta_disks)), + max(0,-mddev->delta_disks)), GFP_KERNEL); if (!conf->mirrors) goto out; @@ -3660,7 +3660,7 @@ static int run(struct mddev *mddev) conf->geo.far_offset == 0) goto out_free_conf; if (conf->prev.far_copies != 1 && - conf->geo.far_offset == 0) + conf->prev.far_offset == 0) goto out_free_conf; } -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
