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Commit b12eab1a authored by Denis Kirjanov's avatar Denis Kirjanov Committed by Robert Richter
Browse files

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 d8a382d2

arch/powerpc/oprofile/op_model_cell.c

+1 −1
Original line number Original line Diff line number Diff line
@@ -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];