From: Andrew Rybchenko <Andrew.Rybchenko@xxxxxxxxxxxx>
commit e70c70c38d7a5ced76fc8b1c4a7ccee76e9c2911 upstream.
On 32-bit systems, mask is only an array of 3 longs, not 4, so don't try
to write to mask[3].
Also include build-time checks in case the size of the bitmask changes.
Fixes: 3c36a2aded8c ("sfc: display vadaptor statistics for all interfaces")
Signed-off-by: Edward Cree <ecree@xxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/sfc/ef10.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -1304,13 +1304,14 @@ static void efx_ef10_get_stat_mask(struc
}
#if BITS_PER_LONG == 64
+ BUILD_BUG_ON(BITS_TO_LONGS(EF10_STAT_COUNT) != 2);
mask[0] = raw_mask[0];
mask[1] = raw_mask[1];
#else
+ BUILD_BUG_ON(BITS_TO_LONGS(EF10_STAT_COUNT) != 3);
mask[0] = raw_mask[0] & 0xffffffff;
mask[1] = raw_mask[0] >> 32;
mask[2] = raw_mask[1] & 0xffffffff;
- mask[3] = raw_mask[1] >> 32;
#endif
}
