Additional info: bill@bill-desk:~$ sudo cat /proc/242508/stack [<0>] wait_barrier.part.0+0x180/0x1e0 [raid10] [<0>] wait_barrier+0x70/0xc0 [raid10] [<0>] raid10_sync_request+0x177e/0x19e3 [raid10] [<0>] md_do_sync+0xa36/0x1390 [<0>] md_thread+0xa5/0x1a0 [<0>] kthread+0xe4/0x110 [<0>] ret_from_fork+0x47/0x70 [<0>] ret_from_fork_asm+0x1a/0x30
