From: Fabio Estevam <festevam@gmail.com>
To: Tim Harvey <tharvey@gateworks.com>
Cc: Shawn Guo <shawnguo@kernel.org>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
"Russell King (Oracle)" <linux@armlinux.org.uk>,
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: Wed, 15 Sep 2021 06:44:56 -0300 [thread overview]
Message-ID: <CAOMZO5B_To63N3sL0XyOxPa7iEV+sESDgbu=wxgs8UR97N47jA@mail.gmail.com> (raw)
In-Reply-To: <CAJ+vNU09ux-aoohB1TpdnPesg8MHzH=ZZDEvAHsajX7+UDRQ0g@mail.gmail.com>
Hi Tim,
[Adding the NXP folks]
On Tue, Sep 7, 2021 at 2:49 PM Tim Harvey <tharvey@gateworks.com> wrote:
> Shawn, Fabio and Pengutronix Kernel team,
>
> Do you know why we get 'Checked W+X mappings: FAILED, 1 W+X pages
> found' messages for IMX6 with CONFIG_SUSPEND and CONFIG_DEBUG_WX
> enabled due to to __arm_ioremap_exec call remapping ocram? [1]
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!
Also, suspend/resume is not working as expected:
# echo enabled > /sys/class/tty/ttymxc0/power/wakeup
# echo mem > /sys/power/state
(Sometimes it reboots the board, sometimes it does not enter in suspend).
I haven't had a chance to debug this but just wanted to report it.
Regards,
Fabio Estevam
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next prev parent reply other threads:[~2021-09-15 9:47 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 [this message]
2021-09-15 15:07 ` Tim Harvey
2021-09-20 16:22 ` Russell King (Oracle)
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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