From: Denis Kirjanov <dkirjanov@hera•kernel.org>
To: arnd@arndb•de, benh@kernel•crashing.org, paulus@samba•org,
jkosina@suse•cz
Cc: robert.richter@amd•com, linuxppc-dev@ozlabs•org,
oprofile-list@lists•sf.net, cel@us•ibm.com
Subject: [PATCH] powerpc/oprofile: fix potential buffer overrun in op_model_cell.c
Date: Tue, 1 Jun 2010 19:43:34 +0000 [thread overview]
Message-ID: <20100601194334.GA4549@hera.kernel.org> (raw)
Fix potential initial_lfsr buffer overrun.
Writing past the end of the buffer could happen when index == ENTRIES
Signed-off-by: Denis Kirjanov <dkirjanov@kernel•org>
---
arch/powerpc/oprofile/op_model_cell.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
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];
next reply other threads:[~2010-06-01 19:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-01 19:43 Denis Kirjanov [this message]
2010-06-02 20:12 ` [PATCH] powerpc/oprofile: fix potential buffer overrun in op_model_cell.c Carl Love
2010-06-04 9:58 ` Robert Richter
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