Located the cause of the problem to commit 6b0310fbf087ad6: ext4: don't return to userspace after freezing the fs with a mutex held. Discussing exact nature of bug and fix for it with upstream authors.
Located the cause of the problem to commit 6b0310fbf087ad6: ext4: don't return to userspace after freezing the fs with a mutex held. Discussing exact nature of bug and fix for it with upstream authors.