diff options
| author | Ido Schimmel <idosch@mellanox.com> | 2017-07-12 10:12:55 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-12 18:15:52 +0300 |
| commit | 6f497930af73863b32e8c73947a52d1003af31e2 (patch) | |
| tree | ac244ff50fadeadd355f6bd436f45b37f2c5c24e /drivers | |
| parent | a9265b804dfdfca4e2ce3730fe0528da9c01dbf7 (diff) | |
| download | linux-6f497930af73863b32e8c73947a52d1003af31e2.tar.xz | |
mlxsw: spectrum_switchdev: Check status of memory allocation
We can't rely on kzalloc() always succeeding, so check its return value.
Suppresses the following smatch error:
mlxsw_sp_switchdev_event() error: potential null dereference
'switchdev_work->fdb_info.addr'. (kzalloc returns
null)
Fixes: af061378924f ("mlxsw: spectrum_switchdev: Add support for learning FDB through notification")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c index 4733fe918315..656b2d3f1bee 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c @@ -1916,6 +1916,8 @@ static int mlxsw_sp_switchdev_event(struct notifier_block *unused, memcpy(&switchdev_work->fdb_info, ptr, sizeof(switchdev_work->fdb_info)); switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); + if (!switchdev_work->fdb_info.addr) + goto err_addr_alloc; ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, fdb_info->addr); /* Take a reference on the device. This can be either @@ -1932,6 +1934,10 @@ static int mlxsw_sp_switchdev_event(struct notifier_block *unused, mlxsw_core_schedule_work(&switchdev_work->work); return NOTIFY_DONE; + +err_addr_alloc: + kfree(switchdev_work); + return NOTIFY_BAD; } static struct notifier_block mlxsw_sp_switchdev_notifier = { |