From: Thomas Gleixner <tglx@linutronix.de>
To: David Smith <dsmith@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andy Lutomirski <luto@amacapital.net>,
Ingo Molnar <mingo@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Frank Ch. Eigler" <fche@redhat.com>
Subject: Re: [RFC][PATCH] x86: Verify access_ok() context
Date: Mon, 16 Jan 2017 22:14:31 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.20.1701162211570.3923@nanos> (raw)
In-Reply-To: <f84a1055-f65b-fcd8-c914-46b328acd172@redhat.com>
On Mon, 16 Jan 2017, David Smith wrote:
> If you call access_ok() with page faulting disabled, you'll still see
> this new warning.
And how so? It's just checking for task context. page fault disable/enable
has absolutely nothing to do with that.
> If you put that new access_ok() call in a module that gets
> loaded/unloaded, you see one warning for every module load, which gets a
> bit annoying.
Can you please elaborate where this access_ok() is placed in the module
code?
Thanks,
tglx
next prev parent reply other threads:[~2017-01-16 21:46 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-22 9:57 [RFC][PATCH] x86: Verify access_ok() context Peter Zijlstra
2016-11-22 17:28 ` Andy Lutomirski
2016-11-22 19:37 ` Peter Zijlstra
2016-11-22 19:42 ` Linus Torvalds
2016-12-05 10:27 ` Peter Zijlstra
2017-01-16 20:27 ` David Smith
2017-01-16 21:14 ` Thomas Gleixner [this message]
2017-01-18 22:16 ` David Smith
2017-01-19 0:19 ` Andy Lutomirski
2017-01-19 15:37 ` David Smith
2017-01-20 8:24 ` Peter Zijlstra
2017-01-20 8:50 ` Thomas Gleixner
2017-01-19 18:12 ` Thomas Gleixner
2017-01-19 20:22 ` Frank Ch. Eigler
2017-01-19 20:50 ` Thomas Gleixner
2017-01-19 21:27 ` Frank Ch. Eigler
2017-01-19 22:20 ` Peter Zijlstra
2017-01-19 23:04 ` Thomas Gleixner
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