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Subject[087/200] md/linear: avoid possible oops and array stop
2.6.34-stable review patch.  If anyone has any objections, please let me know.


From: NeilBrown <>

commit ef2f80ff7325b2c1888ff02ead28957b5840bf51 upstream.

Since commit ef286f6fa673cd7fb367e1b145069d8dbfcc6081
it has been important that each personality clears
->private in the ->stop() function, or sets it to a
attribute group to be removed.
linear.c doesn't. This can sometimes lead to an oops,
though it doesn't always.

Suitable for 2.6.33-stable and 2.6.34.

Signed-off-by: NeilBrown <>
Signed-off-by: Greg Kroah-Hartman <>

drivers/md/linear.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/md/linear.c
+++ b/drivers/md/linear.c
@@ -282,6 +282,7 @@ static int linear_stop (mddev_t *mddev)
blk_sync_queue(mddev->queue); /* the unplug fn references 'conf'*/
+ mddev->private = NULL;

return 0;

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