Re: [PATCH 2/8] xen/blkfront: read response from backend only once

[PATCH 0/8] xen: harden frontends against malicious backends · Juergen Gross <jgross@suse.com> · 2021-05-13
[PATCH 3/8] xen/blkfront: don't take local copy of a request from the ring page · Juergen Gross <jgross@suse.com> · 2021-05-13
Re: [PATCH 3/8] xen/blkfront: don't take local copy of a request from the ring page · Jan Beulich <hidden> · 2021-05-17
Re: [PATCH 3/8] xen/blkfront: don't take local copy of a request from the ring page · Juergen Gross <jgross@suse.com> · 2021-05-17
[PATCH 2/8] xen/blkfront: read response from backend only once · Juergen Gross <jgross@suse.com> · 2021-05-13
Re: [PATCH 2/8] xen/blkfront: read response from backend only once · Jan Beulich <hidden> · 2021-05-17
[PATCH 4/8] xen/blkfront: don't trust the backend response data blindly · Juergen Gross <jgross@suse.com> · 2021-05-13
Re: [PATCH 4/8] xen/blkfront: don't trust the backend response data blindly · Jan Beulich <hidden> · 2021-05-17
Re: [PATCH 4/8] xen/blkfront: don't trust the backend response data blindly · Juergen Gross <jgross@suse.com> · 2021-05-17
Re: [PATCH 4/8] xen/blkfront: don't trust the backend response data blindly · Jan Beulich <hidden> · 2021-05-17
Re: [PATCH 4/8] xen/blkfront: don't trust the backend response data blindly · Juergen Gross <jgross@suse.com> · 2021-05-17
Re: [PATCH 4/8] xen/blkfront: don't trust the backend response data blindly · Jan Beulich <hidden> · 2021-05-17
Re: [PATCH 4/8] xen/blkfront: don't trust the backend response data blindly · Juergen Gross <jgross@suse.com> · 2021-07-08
Re: [PATCH 4/8] xen/blkfront: don't trust the backend response data blindly · Jan Beulich <hidden> · 2021-07-08
Re: [PATCH 4/8] xen/blkfront: don't trust the backend response data blindly · Juergen Gross <jgross@suse.com> · 2021-07-08
Re: [PATCH 4/8] xen/blkfront: don't trust the backend response data blindly · Jan Beulich <hidden> · 2021-07-08
Re: [PATCH 4/8] xen/blkfront: don't trust the backend response data blindly · Juergen Gross <jgross@suse.com> · 2021-07-08
Re: [PATCH 0/8] xen: harden frontends against malicious backends · Marek Marczykowski-Górecki <hidden> · 2021-05-21

From: Jan Beulich <hidden>
Date: 2021-05-17 13:50:47
Also in: lkml, xen-devel

On 13.05.2021 12:02, Juergen Gross wrote:

In order to avoid problems in case the backend is modifying a response
on the ring page while the frontend has already seen it, just read the
response into a local buffer in one go and then operate on that buffer
only.

Signed-off-by: Juergen Gross <jgross@suse.com>

Reviewed-by: Jan Beulich <redacted>

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