Commit 238c1a78 authored by Denis Kirjanov's avatar Denis Kirjanov Committed by Robert Richter

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: default avatarDenis Kirjanov <dkirjanov@kernel.org>
Cc: stable@kernel.org
Signed-off-by: default avatarRobert Richter <robert.richter@amd.com>
parent 58cc1a9e
...@@ -1077,7 +1077,7 @@ static int calculate_lfsr(int n) ...@@ -1077,7 +1077,7 @@ static int calculate_lfsr(int n)
index = ENTRIES-1; index = ENTRIES-1;
/* make sure index is valid */ /* make sure index is valid */
if ((index > ENTRIES) || (index < 0)) if ((index >= ENTRIES) || (index < 0))
index = ENTRIES-1; index = ENTRIES-1;
return initial_lfsr[index]; return initial_lfsr[index];
......
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