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net: mvpp2: cls: Check RSS table index validity when creating a context 

Make sure we don't use an out-of-bound index for the per-port RSS
context array.

As of today, the global context creation in mvpp22_rss_context_create
will prevent us from reaching this case, but we should still make sure
we are using a sane value anyway.

Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Maxime Chevallier 2019-05-27 13:52:01 +02:00 committed by David S. Miller
parent cec4f328c9
commit 7af5b07751
1 changed files with 3 additions and 0 deletions
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3
drivers/net/ethernet/marvell/mvpp2/mvpp2_cls.c
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@ -1466,6 +1466,9 @@ int mvpp22_port_rss_ctx_create(struct mvpp2_port *port, u32 *port_ctx)
break;
}
if (i == MVPP22_N_RSS_TABLES)
return -EINVAL;
port->rss_ctx[i] = rss_ctx;
*port_ctx = i;