Re: [linux-next:master] [block/bdev] 3c20917120: BUG:sleeping_function_called_from_invalid_context_at_mm/util.c

[Matthew Wilcox <willy@infradead.org>]

On Wed, Mar 19, 2025 at 12:16:41PM -0700, Luis Chamberlain wrote:
> On Wed, Mar 19, 2025 at 09:55:11AM -0700, Luis Chamberlain wrote:
> > FWIW, I'm not seeing this crash or any kernel splat within the
> > same time (I'll let this run the full 2.5 hours now to verify) on
> > vanilla 6.14.0-rc3 + the 64k-sector-size patches, which would explain why I
> > hadn't seen this in my earlier testing over 10 ext4 profiles on fstests. This
> > particular crash seems likely to be an artifact on the development cycle on
> > next-20250317.
> 
> I confirm that with a vanilla 6.14.0-rc3 + the 64k-sector-size patches a 2.5
> hour run generic/750 doesn't crash at all. So indeed something on the
> development cycle leads to this particular crash.

We can't debug two problems at once.

FOr the first problem, I've demonstrated what the cause is, and that's
definitely introduced by your patch, so we need to figure out a
solution.

For the second problem, we don't know what it is.  Do you want to bisect
it to figure out which commit introduced it?