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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 <dkirjanov@kernel.org>
Cc: stable@kernel.org
Signed-off-by: Robert Richter <robert.richter@amd.com>
hifive-unleashed-5.1
Denis Kirjanov 2010-06-01 15:43:34 -04:00 committed by Robert Richter
parent 58cc1a9e3b
commit 238c1a78c9
1 changed files with 1 additions and 1 deletions
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arch/powerpc/oprofile/op_model_cell.c
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@ -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];