Messages in this thread Patch in this message | | | Date | Mon, 6 Jun 2011 08:34:54 GMT | From | tip-bot for Andy Lutomirski <> | Subject | [tip:x86/vdso] x86-64: Add CONFIG_UNSAFE_VSYSCALLS to feature-removal-schedule |
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Commit-ID: 38172403a97828ae2ea12281b19528582d6625d4 Gitweb: http://git.kernel.org/tip/38172403a97828ae2ea12281b19528582d6625d4 Author: Andy Lutomirski <luto@mit.edu> AuthorDate: Sun, 5 Jun 2011 13:50:25 -0400 Committer: Ingo Molnar <mingo@elte.hu> CommitDate: Mon, 6 Jun 2011 09:43:15 +0200
x86-64: Add CONFIG_UNSAFE_VSYSCALLS to feature-removal-schedule
CONFIG_UNSAFE_VSYSCALLS was added in the previous patch as a temporary hack to avoid penalizing users who don't build glibc from git.
Signed-off-by: Andy Lutomirski <luto@mit.edu> Cc: Jesper Juhl <jj@chaosbits.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Jan Beulich <JBeulich@novell.com> Cc: richard -rw- weinberger <richard.weinberger@gmail.com> Cc: Mikael Pettersson <mikpe@it.uu.se> Cc: Andi Kleen <andi@firstfloor.org> Cc: Brian Gerst <brgerst@gmail.com> Cc: Louis Rilling <Louis.Rilling@kerlabs.com> Cc: Valdis.Kletnieks@vt.edu Cc: pageexec@freemail.hu Link: http://lkml.kernel.org/r/4de62bfbf6974f14d0e9d9ae37cc137dbc926a30.1307292171.git.luto@mit.edu Signed-off-by: Ingo Molnar <mingo@elte.hu> --- 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a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -600,3 +600,12 @@ Why: Superseded by the UVCIOC_CTRL_QUERY ioctl.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@ideasonboard.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@mit.edu> + +----------------------------
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