From: Dave Hansen <dave.hansen@linux.intel.com>
To: Colin King <colin.king@canonical.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>,
"H . Peter Anvin" <hpa@linux.intel.com>,
x86@kernel.org, Borislav Petkov <bp@alien8.de>,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86/mpx: Fix off-by-one comparison with nr_registers
Date: Fri, 26 Feb 2016 11:08:12 -0800 [thread overview]
Message-ID: <56D0A29C.9040504@linux.intel.com> (raw)
In-Reply-To: <1456512931-3388-1-git-send-email-colin.king@canonical.com>
On 02/26/2016 10:55 AM, Colin King wrote:
> In the unlikely event that regno == nr_registers then we get an array
> overrun on regoff because the invalid register check is currently
> off-by-one. Fix this with a check that regno is >= nr_registers instead.
>
> Detected with static analysis using CoverityScan.
Oh, the irony of an overrun in the MPX code! Thanks for catching this.
Acked-by: Dave Hansen <dave.hansen@intel.com>
next prev parent reply other threads:[~2016-02-26 19:16 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-26 18:55 [PATCH] x86/mpx: Fix off-by-one comparison with nr_registers Colin King
2016-02-26 19:08 ` Dave Hansen [this message]
2016-02-26 21:15 ` [tip:x86/urgent] " tip-bot for Colin Ian King
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