From: Vasily Averin Date: Mon, 28 Aug 2006 21:56:24 +0000 (-0700) Subject: e1000: ring buffers resources cleanup X-Git-Tag: firefly_0821_release~33637^2~64^2~20 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3fbbc72ef172cd4272a43234d4c7a7bba44c97f5;p=firefly-linux-kernel-4.4.55.git e1000: ring buffers resources cleanup Memory leak was found in 2.6.18-rc4 and e1000 7.2.7 from sourceforge: We should free resources allocated for previous rings if following allocation fails. Signed-off-by: Vasily Averin Signed-off-by: Andrew Morton Signed-off-by: Auke Kok --- diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index c273b456d29e..426811ad3e9b 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -1395,10 +1395,6 @@ setup_tx_desc_die: * (Descriptors) for all queues * @adapter: board private structure * - * If this function returns with an error, then it's possible one or - * more of the rings is populated (while the rest are not). It is the - * callers duty to clean those orphaned rings. - * * Return 0 on success, negative on failure **/ @@ -1412,6 +1408,9 @@ e1000_setup_all_tx_resources(struct e1000_adapter *adapter) if (err) { DPRINTK(PROBE, ERR, "Allocation for Tx Queue %u failed\n", i); + for (i-- ; i >= 0; i--) + e1000_free_tx_resources(adapter, + &adapter->tx_ring[i]); break; } } @@ -1651,10 +1650,6 @@ setup_rx_desc_die: * (Descriptors) for all queues * @adapter: board private structure * - * If this function returns with an error, then it's possible one or - * more of the rings is populated (while the rest are not). It is the - * callers duty to clean those orphaned rings. - * * Return 0 on success, negative on failure **/ @@ -1668,6 +1663,9 @@ e1000_setup_all_rx_resources(struct e1000_adapter *adapter) if (err) { DPRINTK(PROBE, ERR, "Allocation for Rx Queue %u failed\n", i); + for (i-- ; i >= 0; i--) + e1000_free_rx_resources(adapter, + &adapter->rx_ring[i]); break; } }