Re: Bisected: drivers/block/xen-blkback/xenbus.c:327 xen_blkif_disconnect+0x24f/0x260

[Juergen Gross <jgross@xxxxxxxx>]

On 15.09.22 14:49, Sander Eikelenboom wrote:
> Hi Juergen,
>
> I'm having trouble booting my DomU's when trying to use a linux-5.19 kernel for 
> both Dom0 and DomU.
> A dom0 5.19 kernel with a domU 5.18 kernel boots fine.
> I'm using durect kernel boot to boot the domU guest (kernel=  and ramdisk= 
> parameters).
> Since both xen-blkback and xen-blkfront could be into play,
> I bisected this by keeping dom0 fixed as a 5.19 kernel and do the bisecting on 
> the domU kernel.
> Bisecting leads to commit 4573240f0764ee79d7558d74fc535baa1e110d20 "xen/xenbus: 
> eliminate xenbus_grant_ring()"
> Reverting this specific commit makes the domU boot fine again.
>
> I have added the splat from dom0 kernel below (from using 5.19.8 kernel for both 
> dom0 and domU),
> the domU does not seem to have any interessting logging,
> apart from not being able to find the root filesystem.
>
> Do you have any ideas ?
Ouch. What a silly, silly, silly error!

Does the attached patch fix it for you?


Juergen

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