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 <vvs@sw.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index c273b45..426811a 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -1395,10 +1395,6 @@
* (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 @@
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 @@
* (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 @@
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;
}
}