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Message-Id: <1660d1687db01852ec58bbf970e22868db367d53.1306851090.git.luto@mit.edu> Date: Tue, 31 May 2011 10:14:08 -0400 From: Andy Lutomirski <luto@....EDU> To: Ingo Molnar <mingo@...e.hu>, x86@...nel.org Cc: Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org, Jesper Juhl <jj@...osbits.net>, Borislav Petkov <bp@...en8.de>, Linus Torvalds <torvalds@...ux-foundation.org>, Andrew Morton <akpm@...ux-foundation.org>, Arjan van de Ven <arjan@...radead.org>, Jan Beulich <JBeulich@...ell.com>, richard -rw- weinberger <richard.weinberger@...il.com>, Mikael Pettersson <mikpe@...uu.se>, Andi Kleen <andi@...stfloor.org>, Andy Lutomirski <luto@....edu> Subject: [PATCH v4 10/10] x86-64: Add CONFIG_UNSAFE_VSYSCALLS to feature-removal-schedule Signed-off-by: Andy Lutomirski <luto@....edu> --- Documentation/feature-removal-schedule.txt | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-) diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index 1a9446b..94b4470 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -600,3 +600,12 @@ Why: Superseded by the UVCIOC_CTRL_QUERY ioctl. Who: Laurent Pinchart <laurent.pinchart@...asonboard.com> ---------------------------- + +What: CONFIG_UNSAFE_VSYSCALLS (x86_64) +When: When glibc 2.14 or newer is ubitquitous. Perhaps mid-2012. +Why: Having user-executable code at a fixed address is a security problem. + Turning off CONFIG_UNSAFE_VSYSCALLS mostly removes the risk but will + make the time() function slower on glibc versions 2.13 and below. +Who: Andy Lutomirski <luto@....edu> + +---------------------------- -- 1.7.5.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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