Public bug reported: The problem is incorrect backporting of [1] to the Ubuntu Trusty kernel [2].
While original patch moves `dm_get_live_table` to the appropriate section mutex lock the backported code just adds another call to it under the mutex leaving the original call under spinlock in place. [1] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2a708cff93f1845b9239bc7d6310aef54e716c6a [2] http://kernel.ubuntu.com/git/ubuntu/ubuntu-trusty.git/commit/?id=340f3e9970d6251a549d0c8cf90179b190f15def ** Affects: linux (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1523491 Title: kernel stuck in dm_destroy Status in linux package in Ubuntu: New Bug description: The problem is incorrect backporting of [1] to the Ubuntu Trusty kernel [2]. While original patch moves `dm_get_live_table` to the appropriate section mutex lock the backported code just adds another call to it under the mutex leaving the original call under spinlock in place. [1] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2a708cff93f1845b9239bc7d6310aef54e716c6a [2] http://kernel.ubuntu.com/git/ubuntu/ubuntu-trusty.git/commit/?id=340f3e9970d6251a549d0c8cf90179b190f15def To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1523491/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
