diff options
| author | Feras Daoud <ferasda@mellanox.com> | 2017-06-14 08:59:09 +0200 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-06-14 21:16:23 +0200 |
| commit | 4542d66bb26f2d021c70a78e46f183c6675fc4c9 (patch) | |
| tree | 43f543c372350ff2ccf13be1003355b523834d7f /drivers/infiniband/ulp/ipoib/ipoib_vlan.c | |
| parent | IB/ipoib: Fix access to un-initialized napi struct (diff) | |
| download | linux-4542d66bb26f2d021c70a78e46f183c6675fc4c9.tar.xz linux-4542d66bb26f2d021c70a78e46f183c6675fc4c9.zip | |
IB/ipoib: Fix memory leak in create child syscall
The flow of creating a new child goes through ipoib_vlan_add
which allocates a new interface and checks the rtnl_lock.
If the lock is taken, restart_syscall will be called to restart
the system call again. In this case we are not releasing the
already allocated interface, causing a leak.
Fixes: 9baa0b036410 ("IB/ipoib: Add rtnl_link_ops support")
Signed-off-by: Feras Daoud <ferasda@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/ulp/ipoib/ipoib_vlan.c')
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_vlan.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_vlan.c b/drivers/infiniband/ulp/ipoib/ipoib_vlan.c index 1ee46194bbf5..081b33deff1b 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_vlan.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_vlan.c @@ -133,13 +133,13 @@ int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey) snprintf(intf_name, sizeof intf_name, "%s.%04x", ppriv->dev->name, pkey); + if (!rtnl_trylock()) + return restart_syscall(); + priv = ipoib_intf_alloc(ppriv->ca, ppriv->port, intf_name); if (!priv) return -ENOMEM; - if (!rtnl_trylock()) - return restart_syscall(); - down_write(&ppriv->vlan_rwsem); /* |