From 238c1a78c957f3dc7cb848b161dcf4805793ed56 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 Fix potential initial_lfsr buffer overrun. Writing past the end of the buffer could happen when index == ENTRIES Signed-off-by: Denis Kirjanov Cc: stable@kernel.org Signed-off-by: Robert Richter --- 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 2c9e522..7fd90d0 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]; -- 1.8.2.3