Re: [PATCH] Fix: buffer overflow during hvc_alloc().

[Andrew Donnellan]

On 6/4/20 6:40 am, andrew@xxxxxxxxxx wrote:
> From: Andrew Melnychenko <andrew@xxxxxxxxxx>
>
> If there is a lot(more then 16) of virtio-console devices
> or virtio_console module is reloaded
> - buffers 'vtermnos' and 'cons_ops' are overflowed.
> In older kernels it overruns spinlock which leads to kernel freezing:
> https://bugzilla.redhat.com/show_bug.cgi?id=1786239

This Bugzilla report isn't publicly accessible. Can you include a 
relevant summary here and/or make the report publicly viewable?

If it does indeed lead to a kernel freeze, this should be tagged with a 
Fixes: and a Cc: stable@xxxxxxxxxxxxxxxx

--
Andrew Donnellan              OzLabs, ADL Canberra
ajd@xxxxxxxxxxxxx             IBM Australia Limited