Looks like this kernel has a bad backport of upstream commit 2a708cff93f1 ("dm: fix AB-BA deadlock in __dm_destroy()"). To confirm this, I've uploaded a test kernel with this backport reverted:
http://people.canonical.com/~henrix/lp1522766/v1/
Looks like this kernel has a bad backport of upstream commit 2a708cff93f1 ("dm: fix AB-BA deadlock in __dm_destroy()").
To confirm this, I've uploaded a test kernel with this backport reverted:
http:// people. canonical. com/~henrix/ lp1522766/ v1/