riscv32 EXT4 splat, 6.8 regression?

Theodore Ts'o tytso at mit.edu
Fri Apr 12 08:43:42 PDT 2024


On Fri, Apr 12, 2024 at 04:57:08PM +0200, Björn Töpel wrote:
> Hi!
> 
> I've been looking at an EXT4 splat on riscv32, that LKFT found [1]:

I'm getting a "page not found" for [1]?

> This was not present in 6.7. Bisection wasn't really helpful (to me at
> least); I got it down to commit c604110e662a ("Merge tag 'vfs-6.8.misc'
> of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs"), and when I
> revert the commits in the vfs merge the splat went away, but I *really*
> struggle to see how those are related...

It sounds like you have a reliable repro; is it something that can be
streamlined into a simple test program?  If so, is it something that
can be reproduced on other architectures?  And could you make it
available?

Thanks,

					- Ted



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