On Tue, May 20, 2025 at 12:23:42PM +0200, Marc Hartmayer wrote:
> On Mon, May 12, 2025 at 01:14 PM -0400, Johannes Weiner <hannes@cmpxchg.org> wrote:
...
> > The weird thing is that the warning is from expand(), when the broken
> > up chunks are put *back*. Marc, can you confirm that this is the only
> > warning in dmesg, and there aren't any before this one?
>
> Yep, I’ve just checked, it was the first warning and `panic_on_warn` is
> set to 1.
>
> I managed to reproduce a similar crash using 6.15.0-rc7 (this time THP
> seems to be involved):
...
> This time, the setup is even simpler:
>
> 1. Start a 2GB QEMU/KVM guest
> 2. Now run some memory stress test
>
> I run this test in a loop (with starting/shutting down the VM) and after
> many iterations, the bug occurs.
>
> […snip…]

Hi Johannes,

Marc is going to be away for some time.
Is there any update here?

Thanks!