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Fri, 6 Sep 2024 06:32:16 -0400 (EDT) Date: Fri, 6 Sep 2024 12:32:12 +0200 From: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= To: Linux regressions mailing list Cc: xen-devel , Juergen Gross , Stefano Stabellini , Oleksandr Tyshchenko Subject: Re: [REGRESSION] kernel NULL pointer dereference in xen-balloon with mem hotplug Message-ID: References: <8e3afa4a-aca2-4803-886d-e162eb5e0478@leemhuis.info> Precedence: bulk X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="gFiQE58+i/FnxuLU" Content-Disposition: inline In-Reply-To: <8e3afa4a-aca2-4803-886d-e162eb5e0478@leemhuis.info> --gFiQE58+i/FnxuLU Content-Type: text/plain; protected-headers=v1; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Date: Fri, 6 Sep 2024 12:32:12 +0200 From: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= To: Linux regressions mailing list Cc: xen-devel , Juergen Gross , Stefano Stabellini , Oleksandr Tyshchenko Subject: Re: [REGRESSION] kernel NULL pointer dereference in xen-balloon with mem hotplug On Fri, Sep 06, 2024 at 12:30:03PM +0200, Linux regression tracking (Thorst= en Leemhuis) wrote: > On 08.08.24 12:31, Marek Marczykowski-G=C3=B3recki wrote: > >=20 > > When testing Linux 6.11-rc2, I've got the crash like below. It's a PVH > > guest started with 400MB memory, and then extended via mem hotplug (I > > don't know to what exact size it was at this time, but up to 4GB), it > > was quite early in the domU boot process, I suspect it could be the > > first mem hotplug even happening there. > > Unfortunately I don't have reliable reproducer, it crashed only once > > over several test runs. I don't remember seeing such crash before, so it > > looks like a regression in 6.11. I'm not sure if that matters, but it's > > on ADL, very similar to the qubes-hw2 gitlab runner. >=20 > Marek, did this happen again or do things appear to be resolved? Asking > because I'm tracking this as a regression. I haven't investigated it more, and also haven't ran any later tests on 6.11, so I don't know if it's still there, but I suspect it might be. --=20 Best Regards, Marek Marczykowski-G=C3=B3recki Invisible Things Lab --gFiQE58+i/FnxuLU Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEhrpukzGPukRmQqkK24/THMrX1ywFAmba2i4ACgkQ24/THMrX 1yxL/AgAgXVJ3sYbrGKzil07rR/rD5O4DQoaMbdeNeSPV641VkUjSyxCLPS72L+r //37mRrxe+/Lw1CtWGJcqt6sbOFlLLvp/0S5n37CvVMWD84jA8R3OCl6Yr0btMgK ZOnxUfecgpbok4aWZgDQgTO0H4WYJZJA2j0QpQzUrBvjthPppU6On7/LGV3Fx/kb Kl0n4bavC26DuTJKJQlaXRfu22esNNq6neUWF7rMw2TCPXPFXSDXdIydMPybgOuM Qld3wlDwdHXTWnTKnQFa9YEwwD+vktlHHHWb/2D+WHtgYSjz56t7R50suAFflTme xEeIhlqXsJ3pTlMpMjjlU7Pk3kfn8w== =RMlY -----END PGP SIGNATURE----- --gFiQE58+i/FnxuLU--