Joe Thornber 1cfc455291 dm array: fix a reference counting bug in shadow_ablock ...

commit ed9571f0cf upstream.

An old array block could have its reference count decremented below
zero when it is being replaced in the btree by a new array block.

The fix is to increment the old ablock's reference count just before
inserting a new ablock into the btree.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2013-12-20 07:45:11 -08:00

20 KiB

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