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| author | Cong Wang <xiyou.wangcong@gmail.com> | 2019-07-03 17:21:12 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-07-05 15:22:27 -0700 |
| commit | 619afef01f74f3572b5e9a266c1230dc83761eec (patch) | |
| tree | 655b4815bf5014dda535cdc8b4c4527ebf48909a /net/hsr | |
| parent | 114b5b355ec0b6e83a6628a5ab5d03e50fd40a31 (diff) | |
| download | linux-619afef01f74f3572b5e9a266c1230dc83761eec.tar.gz | |
hsr: fix a memory leak in hsr_del_port()
hsr_del_port() should release all the resources allocated in hsr_add_port(). As a consequence of this change, hsr_for_each_port() is no longer safe to work with hsr_del_port(), switch to list_for_each_entry_safe() as we always hold RTNL lock. Cc: Arvid Brodin <arvid.brodin@alten.se> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/hsr')
| -rw-r--r-- | net/hsr/hsr_device.c | 6 | ||||
| -rw-r--r-- | net/hsr/hsr_slave.c | 1 |
2 files changed, 5 insertions, 2 deletions
diff --git a/net/hsr/hsr_device.c b/net/hsr/hsr_device.c index 15c72065df79..f48b6a275cf0 100644 --- a/net/hsr/hsr_device.c +++ b/net/hsr/hsr_device.c @@ -351,13 +351,14 @@ static void hsr_dev_destroy(struct net_device *hsr_dev) { struct hsr_priv *hsr; struct hsr_port *port; + struct hsr_port *tmp; hsr = netdev_priv(hsr_dev); hsr_debugfs_term(hsr); rtnl_lock(); - hsr_for_each_port(hsr, port) + list_for_each_entry_safe(port, tmp, &hsr->ports, port_list) hsr_del_port(port); rtnl_unlock(); @@ -428,6 +429,7 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2], { struct hsr_priv *hsr; struct hsr_port *port; + struct hsr_port *tmp; int res; hsr = netdev_priv(hsr_dev); @@ -492,7 +494,7 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2], return 0; fail: - hsr_for_each_port(hsr, port) + list_for_each_entry_safe(port, tmp, &hsr->ports, port_list) hsr_del_port(port); err_add_port: hsr_del_node(&hsr->self_node_db); diff --git a/net/hsr/hsr_slave.c b/net/hsr/hsr_slave.c index 88b6705ded83..ee561297d8a7 100644 --- a/net/hsr/hsr_slave.c +++ b/net/hsr/hsr_slave.c @@ -193,4 +193,5 @@ void hsr_del_port(struct hsr_port *port) if (port != master) dev_put(port->dev); + kfree(port); } |