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| author | Ludwig Nussel <ludwig.nussel@suse.de> | 2011-11-15 14:46:46 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2012-01-18 07:31:58 -0800 |
| commit | 0248fedcdb0982fc15246ff23a7b926f592258d5 (patch) | |
| tree | ffafcd3eb013be74a2b9e503ec396baf67b6ee31 /fs/fhandle.c | |
| parent | 8d0120df91823df951facd3527e9f148b24e78f3 (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>
Diffstat (limited to 'fs/fhandle.c')
0 files changed, 0 insertions, 0 deletions