Re: Bcache in Ubuntu 18.04 kernel panic

On Tue, Sep 01, 2020 at 03:42:54PM -0500, Brendan Boerner wrote:

Hi,

I spent the weekend verifying and isolating a kernel panic in bcache
on Ubuntu 18.04 (4.15.0-112-generic #113-Ubuntu SMP Thu Jul 9 23:41:39
UTC 2020).

Is this the place to report it? I have kernel crash dumps.

I'm no bcache developer, but I see there are Ubuntu kernel updates
available, with bcache fixes.

From the changelogs for 4.15.0-113.114:

  * Regression in kernel 4.15.0-91 causes kernel panic with Bcache
    (LP: #1867916)
    - bcache: check and adjust logical block size for backing devices


Perhaps you used unorthodox (neither 512b nor 4k) block sizes at bcache creation?


Regards
Matthias