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From: Thomas Gleixner <tglx@linutronix.de>
To: Andy Lutomirski <luto@amacapital.net>
Cc: LKML <linux-kernel@vger.kernel.org>, X86 ML <x86@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Mathias Krause <minipli@googlemail.com>
Subject: Re: [patch 3/3] x86/vdso: Sanitize vdso*_enabled handling
Date: Mon, 10 Apr 2017 18:25:44 +0200 (CEST)	[thread overview]
Message-ID: <alpine.DEB.2.20.1704101808120.2906@nanos> (raw)
In-Reply-To: <CALCETrU2JOa0Roz_-Vtpq_NZJNFPf-fY=JxeZ+nsA0BMRqtHCg@mail.gmail.com>

On Mon, 10 Apr 2017, Andy Lutomirski wrote:

> On Mon, Apr 10, 2017 at 8:14 AM, Thomas Gleixner <tglx@linutronix.de> wrote:
> > +static int vdso32_sysctl;
> > +
> > +static int vdso_update_handler(struct ctl_table *table, int write,
> > +                              void __user *buffer, size_t *lenp,
> > +                              loff_t *ppos)
> > +{
> > +       int ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
> 
> Using a global for the temporary is gross and mildly racy.  I would
> just open-code the conversion.  Or, even better, add proc_dobool().

Dammit, thought about it and then got lazy. :(

Thanks,

	tglx

  reply	other threads:[~2017-04-10 16:25 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-10 15:14 [patch 0/3] x86/vdso: Fix enable inconsistencies and cleanup Thomas Gleixner
2017-04-10 15:14 ` [patch 1/3] x86/vdso: Ensure vdso32_enabled gets set to valid values only Thomas Gleixner
2017-04-10 16:34   ` [tip:x86/urgent] " tip-bot for Mathias Krause
2017-04-10 15:14 ` [patch 2/3] x86/vdso: Plug race between mapping and ELF header setup Thomas Gleixner
2017-04-10 15:56   ` Andy Lutomirski
2017-04-10 16:34   ` [tip:x86/urgent] " tip-bot for Thomas Gleixner
2017-04-10 15:14 ` [patch 3/3] x86/vdso: Sanitize vdso*_enabled handling Thomas Gleixner
2017-04-10 15:55   ` Andy Lutomirski
2017-04-10 16:25     ` Thomas Gleixner [this message]
  -- strict thread matches above, loose matches on Subject: below --
2017-04-05 20:36 [PATCH] x86/vdso: ensure vdso32_enabled gets set to valid values only Mathias Krause
2017-04-06 15:59 ` Andy Lutomirski
2017-04-10 13:13 ` Thomas Gleixner
2017-04-10 13:41   ` Thomas Gleixner

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