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From: Richard Weinberger <richard@nod.at>
To: Takashi Iwai <tiwai@suse.de>
Cc: linux-mtd <linux-mtd@lists.infradead.org>,
	joern <joern@lazybastard.org>,
	 Miquel Raynal <miquel.raynal@bootlin.com>,
	 Vignesh Raghavendra <vigneshr@ti.com>,
	 linux-kernel <linux-kernel@vger.kernel.org>,
	 Fabian Vogt <fvogt@suse.com>
Subject: Re: [PATCH] mtd: phram: Add the kernel lock down check
Date: Thu, 14 Nov 2024 16:50:27 +0100 (CET)	[thread overview]
Message-ID: <1898930663.21166792.1731599427304.JavaMail.zimbra@nod.at> (raw)
In-Reply-To: <20241114154442.25920-1-tiwai@suse.de>

----- Ursprüngliche Mail -----
> Von: "Takashi Iwai" <tiwai@suse.de>
> An: "linux-mtd" <linux-mtd@lists.infradead.org>
> CC: "joern" <joern@lazybastard.org>, "Miquel Raynal" <miquel.raynal@bootlin.com>, "richard" <richard@nod.at>, "Vignesh
> Raghavendra" <vigneshr@ti.com>, "linux-kernel" <linux-kernel@vger.kernel.org>, "Fabian Vogt" <fvogt@suse.com>
> Gesendet: Donnerstag, 14. November 2024 16:44:41
> Betreff: [PATCH] mtd: phram: Add the kernel lock down check

> The phram MTD driver may map any memory pages no matter whether it's
> reserved or whatever used for systems, which basically allows user
> bypassing the lock down.
> 
> Add the check and abort the probe if the kernel is locked down for
> LOCKDOWN_DEV_MEM.
> 
> Reported-by: Fabian Vogt <fvogt@suse.com>
> Suggested-by: Fabian Vogt <fvogt@suse.com>
> Signed-off-by: Takashi Iwai <tiwai@suse.de>

Good catch!

Acked-by: Richard Weinberger <richard@nod.at>

Thanks,
//richard

______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/

WARNING: multiple messages have this Message-ID (diff)
From: Richard Weinberger <richard@nod.at>
To: Takashi Iwai <tiwai@suse.de>
Cc: linux-mtd <linux-mtd@lists.infradead.org>,
	joern <joern@lazybastard.org>,
	 Miquel Raynal <miquel.raynal@bootlin.com>,
	 Vignesh Raghavendra <vigneshr@ti.com>,
	 linux-kernel <linux-kernel@vger.kernel.org>,
	 Fabian Vogt <fvogt@suse.com>
Subject: Re: [PATCH] mtd: phram: Add the kernel lock down check
Date: Thu, 14 Nov 2024 16:50:27 +0100 (CET)	[thread overview]
Message-ID: <1898930663.21166792.1731599427304.JavaMail.zimbra@nod.at> (raw)
In-Reply-To: <20241114154442.25920-1-tiwai@suse.de>

----- Ursprüngliche Mail -----
> Von: "Takashi Iwai" <tiwai@suse.de>
> An: "linux-mtd" <linux-mtd@lists.infradead.org>
> CC: "joern" <joern@lazybastard.org>, "Miquel Raynal" <miquel.raynal@bootlin.com>, "richard" <richard@nod.at>, "Vignesh
> Raghavendra" <vigneshr@ti.com>, "linux-kernel" <linux-kernel@vger.kernel.org>, "Fabian Vogt" <fvogt@suse.com>
> Gesendet: Donnerstag, 14. November 2024 16:44:41
> Betreff: [PATCH] mtd: phram: Add the kernel lock down check

> The phram MTD driver may map any memory pages no matter whether it's
> reserved or whatever used for systems, which basically allows user
> bypassing the lock down.
> 
> Add the check and abort the probe if the kernel is locked down for
> LOCKDOWN_DEV_MEM.
> 
> Reported-by: Fabian Vogt <fvogt@suse.com>
> Suggested-by: Fabian Vogt <fvogt@suse.com>
> Signed-off-by: Takashi Iwai <tiwai@suse.de>

Good catch!

Acked-by: Richard Weinberger <richard@nod.at>

Thanks,
//richard

  reply	other threads:[~2024-11-14 15:52 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-11-14 15:44 [PATCH] mtd: phram: Add the kernel lock down check Takashi Iwai
2024-11-14 15:44 ` Takashi Iwai
2024-11-14 15:50 ` Richard Weinberger [this message]
2024-11-14 15:50   ` Richard Weinberger
2024-12-05 10:45 ` Miquel Raynal
2024-12-05 10:45   ` Miquel Raynal

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