On Mon, Mar 13, 2017 at 8:13 AM, Jan Kara <jack@xxxxxxx> wrote: > Hello, > > this is a series with the remaining patches (on top of 4.11-rc2) to fix several > different races and issues I've found when testing device shutdown and reuse. > The first two patches fix possible (theoretical) problems when opening of a > block device races with shutdown of a gendisk structure. Patches 3-9 fix oops > that is triggered by __blkdev_put() calling inode_detach_wb() too early (the > problem reported by Thiago). Patches 10 and 11 fix oops due to a bug in gendisk > code where get_gendisk() can return already freed gendisk structure (again > triggered by Omar's stress test). > > People, please have a look at patches. They are mostly simple however the > interactions are rather complex so I may have missed something. Also I'm > happy for any additional testing these patches can get - I've stressed them > with Omar's script, tested memcg writeback, tested static (not udev managed) > device inodes. Passes testing with the libnvdimm unit tests that have been tripped up by block-unplug bugs in the past.
