From 63592befd6212caabbe5f9517f64049d55ec67fb Mon Sep 17 00:00:00 2001 From: Denis Kirjanov Date: Tue, 1 Jun 2010 15:43:34 -0400 Subject: [PATCH] powerpc/oprofile: fix potential buffer overrun in op_model_cell.c 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 Signed-off-by: Robert Richter Signed-off-by: Greg Kroah-Hartman --- arch/powerpc/oprofile/op_model_cell.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/oprofile/op_model_cell.c b/arch/powerpc/oprofile/op_model_cell.c index ae06c6236d9c..c8fc4dc8f572 100644 --- 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]; -- 2.34.1