Ubuntu
linux package

  1. Bug #1860231
  2. Comment #6

Comment 6 for bug 1860231

Revision history for this message
Andrea Righi (arighi) wrote :

After a first look at the kernel bug trace, it seems that q->make_request_fn(q, bio) (block/blk-core.c:1064) became NULL.

The reason might be a race with a block device not yet properly initialized when some I/O requests were submitted (or a block device de-registered too early while some I/O was still in progress), but, considering it was triggered upon a mount, I would say the former scenario is more likely to be the case.

I haven't noticed any potentially related fix in DM or in the core block layer. I'll keep investigating.