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Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: <79610b53-5201-4af3-913a-0c4dcbb6f9d6@linux.dev> References: <79610b53-5201-4af3-913a-0c4dcbb6f9d6@linux.dev> <20260731154608.153258-1-linux@jaseg.de> <74625f78-15ea-439f-b9f0-939d2976fa7f@jaseg.de> To: Dave Young Cc: dhowells@redhat.com, =?UTF-8?Q?Jan_Sebastian_G=C3=B6tte?= , Baoquan He , Andrew Morton , Mike Rapoport , Pasha Tatashin , Pratyush Yadav , Jarkko Sakkinen , Paul Moore , James Morris , "Serge E. Hallyn" , Mimi Zohar , James Bottomley , Rob Herring , Saravana Kannan , Coiby Xu , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, kexec@lists.infradead.org, keyrings@vger.kernel.org, linux-mm@kvack.org, linux-security-module@vger.kernel.org, linux-integrity@vger.kernel.org, Tao Liu Subject: Re: [PATCH 0/4] CRASH_ZEROIZE: Wipe secrets before kdump MIME-Version: 1.0 Date: Mon, 03 Aug 2026 10:59:59 +0100 Message-ID: <2490025.1785751199@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 X-Mimecast-MFC-PROC-ID: bcIg8cNNKJmzvi7RYQ2NQpBK1JWUyksYiz69I1Xfxl8_1785751216 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="us-ascii" Content-ID: <2490024.1785751199.1@warthog.procyon.org.uk> X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 8900720005 X-Stat-Signature: yh631hio7gmdwkcahujuyaydzobpfzsf X-Rspam-User: X-HE-Tag: 1785751227-993665 X-HE-Meta: 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 9pdSfCE1 2PVFbsMTHdcH8q9b2yWgo8bYthDzIDdlU0kngG6R0IraTvmgmYIPla73/tNkcnHQyCS/aXrtRCxzH7LIMmlPg4qB1ovCi6qkWA7p417PLf8uLvHd05CweWU9rVQ+ifSdzQAKvgpnN6o4D2+xJ6z5VJCRC/2AFzACgBEiJkci2VYy1/Pe+lb0TCSsonF5iy9Csflwee6hPioIsST7a/SmGkQ1FnkBkQMA23byCWWEh4bf7iS4JAb46ObZMts9ptlF1sBU8jlYaEmaz8NgGZy4OZ/+zkDfpZPzIypMFNKwxph8hGuJv4dpy26lb5wTDgkh8eD6B2y86GkJpw6R1OgU5QKCTNGdy2DUaU7lW8dX6zlZXkGVB+b+wgcIZK5EeZYKChlc5qRy7I5FzA1Ymq+X9bsJaZtEFxD+O8UqWcGE20+mqCjDapcQ0Kzlbsg== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Dave Young wrote: > Cleaning up secret data can be done with makedumpfile + eppic scripts (see > the manual of makedumpfile), or it is even possible to do so in kdump kernel > with Tao Liu's improvments for makedumpfile previously (I don't know the > status, probably dropped for the time being, but it is possible, cced him). Does this represent a leak of the secrets? Also do governmental standardisation bodies have opinions on what constitutes a leak? David