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From: Tim Harvey <tharvey@gateworks.com>
To: Linux ARM Mailing List <linux-arm-kernel@lists.infradead.org>
Subject: arm32 insecure W+X mapping
Date: Thu, 19 Aug 2021 10:19:46 -0700	[thread overview]
Message-ID: <CAJ+vNU0PaPNHbJc5RXgrRYJw2aWowrGVMOrU1=hKhsCTXAB=DA@mail.gmail.com> (raw)

Greetings,

Since commit a8e53c151fe7 "(ARM: 8737/1: mm: dump: add checking for
writable and executable)" I've been seeing the following appear on my
arm32 kernel:

arm/mm: Found insecure W+X mapping at address 0xf087d000
...
Checked W+X mappings: FAILED, 1 W+X pages found

As I haven't seen others report this I assume it's something unique to
my kernel configuration. How do I debug what is causing the insecure
page?

Best regards,

Tim

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             reply	other threads:[~2021-08-19 17:22 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-19 17:19 Tim Harvey [this message]
2021-08-19 21:28 ` arm32 insecure W+X mapping 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)
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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