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From: Greg KH on 1 Jul 2010 18:20
2.6.33-stable review patch. If anyone has any objections, please let me know.

------------------

From: Denis Kirjanov <dkirjanov(a)hera.kernel.org>

commit 238c1a78c957f3dc7cb848b161dcf4805793ed56 upstream.

Fix potential initial_lfsr buffer overrun.
Writing past the end of the buffer could happen when index == ENTRIES

Signed-off-by: Denis Kirjanov <dkirjanov(a)kernel.org>
Signed-off-by: Robert Richter <robert.richter(a)amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)suse.de>

---
arch/powerpc/oprofile/op_model_cell.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/powerpc/oprofile/op_model_cell.c
+++ b/arch/powerpc/oprofile/op_model_cell.c
@@ -1077,7 +1077,7 @@ static int calculate_lfsr(int n)
index = ENTRIES-1;

/* make sure index is valid */
- if ((index > ENTRIES) || (index < 0))
+ if ((index >= ENTRIES) || (index < 0))
index = ENTRIES-1;

return initial_lfsr[index];


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