Re: [Possible REGRESSION, 4.16-rc4] Error updating SMART data during runtime and could not connect to lvmetad at some boot attempts

[Bart Van Assche]

On Tue, 2018-03-13 at 22:32 +0800, Ming Lei wrote:
> On Tue, Mar 13, 2018 at 02:08:23PM +0100, Martin Steigerwald wrote:
> > Ming and Bart, I added you to cc, cause I had to do with you about another 
> > blk-mq report, please feel free to adapt.
> 
> Looks RIP points to scsi_times_out+0x17/0x1d0, maybe a SCSI regression?

I think that it's much more likely that this is a block layer regression. See
e.g. "[PATCH v2] blk-mq: Fix race between resetting the timer and completion
handling" (https://www.mail-archive.com/linux-block@xxxxxxxxxxxxxxx/msg18338.html).

Bart.