diff options
| author | Ludwig Nussel <ludwig.nussel@suse.de> | 2011-11-15 14:46:46 -0800 |
|---|---|---|
| committer | Willy Tarreau <w@1wt.eu> | 2012-02-11 15:40:49 +0100 |
| commit | ad6e2b74568f82e902aa066982f22a3723929bb4 (patch) | |
| tree | edeb0c9f281f43a848ea2903c798ed510d2943df /drivers/char | |
| parent | 93050f523a0e91d818dc7290454a8ea746884ecd (diff) | |
x86: Fix mmap random address range
commit 9af0c7a6fa860698d080481f24a342ba74b68982 upstream.
On x86_32 casting the unsigned int result of get_random_int() to
long may result in a negative value. On x86_32 the range of
mmap_rnd() therefore was -255 to 255. The 32bit mode on x86_64
used 0 to 255 as intended.
The bug was introduced by 675a081 ("x86: unify mmap_{32|64}.c")
in January 2008.
Signed-off-by: Ludwig Nussel <ludwig.nussel@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: harvey.harrison@gmail.com
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/201111152246.pAFMklOB028527@wpaz5.hot.corp.google.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Diffstat (limited to 'drivers/char')
0 files changed, 0 insertions, 0 deletions