From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: Fabio Estevam <festevam@gmail.com>
Cc: Tim Harvey <tharvey@gateworks.com>,
Shawn Guo <shawnguo@kernel.org>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Linux ARM Mailing List <linux-arm-kernel@lists.infradead.org>,
Lee Jones <lee.jones@linaro.org>,
Robin Murphy <robin.murphy@arm.com>,
NXP Linux Team <linux-imx@nxp.com>
Subject: Re: arm32 insecure W+X mapping
Date: Mon, 20 Sep 2021 17:22:36 +0100 [thread overview]
Message-ID: <YUi1TMO6WfmcCDMj@shell.armlinux.org.uk> (raw)
In-Reply-To: <CAOMZO5B_To63N3sL0XyOxPa7iEV+sESDgbu=wxgs8UR97N47jA@mail.gmail.com>
On Wed, Sep 15, 2021 at 06:44:56AM -0300, Fabio Estevam wrote:
> Not sure if this is related or not to the following behavior that I am seeing.
>
> On 5.15-rc1 I see the following on an imx6dl based board:
>
> [ 0.123336] imx6q_suspend_init: failed to find ocram device!
Looking at the platforms I currently have, two imx6q which booted 5.13
do not have this problem, but one imx6dl that booted 5.14 does seem to
spit out this message.
What I do notice is that in the 5.14 case, /proc/iomem reports that the
ocram device does exist:
00900000-0091ffff : 900000.sram sram@900000
so I'm suspecting an init ordering issue.
It looks on the face of it to be a regression between 5.13 and 5.14.
I'm guessing that the sram device isn't being probed early enough.
Maybe some of the initialisation/device model debug options can
identify what changed?
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
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next prev parent reply other threads:[~2021-09-20 16:24 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-19 17:19 arm32 insecure W+X mapping Tim Harvey
2021-08-19 21:28 ` Russell King (Oracle)
2021-08-19 23:59 ` Tim Harvey
2021-08-20 0:16 ` Russell King (Oracle)
2021-08-20 16:06 ` Tim Harvey
2021-08-20 17:48 ` Robin Murphy
2021-08-20 18:41 ` Tim Harvey
2021-09-07 17:48 ` Tim Harvey
2021-09-07 19:22 ` Russell King (Oracle)
2021-09-15 9:44 ` Fabio Estevam
2021-09-15 15:07 ` Tim Harvey
2021-09-20 16:22 ` Russell King (Oracle) [this message]
2021-09-20 20:56 ` Tim Harvey
2021-09-20 21:13 ` Russell King (Oracle)
2021-09-20 22:53 ` Tim Harvey
2021-09-20 23:12 ` Fabio Estevam
2021-09-20 23:19 ` Russell King (Oracle)
2021-09-21 0:21 ` Fabio Estevam
2021-09-21 15:13 ` Russell King (Oracle)
2021-09-22 3:37 ` Shawn Guo
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