Re: [PATCH v3] Btrfs: fix unexpected balance crash due to BUG_ON

On Tue, Jul 12, 2016 at 11:24:21AM -0700, Liu Bo wrote:

Mounting a btrfs can resume previous balance operations asynchronously.
An user got a crash when one drive has some corrupt sectors.

Since balance can cancel itself in case of any error, we can gracefully
return errors to upper layers and let balance do the cancel job.

Reported-by: sash <redacted>
Signed-off-by: Liu Bo <redacted>

Reviewed-by: David Sterba <dsterba@suse.com>