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| author | Florian Fainelli <f.fainelli@gmail.com> | 2020-09-25 03:27:44 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-09-26 00:12:18 +0300 |
| commit | d0186842ec5f456af531c66ee1ca64a8682695e6 (patch) | |
| tree | 1128c50e3baff5b3b8016e4d6d8bf8355cb73bf2 /net/8021q/vlan.c | |
| parent | 7806f6561cd51de382f7628e7f4ecef4568d88da (diff) | |
| download | linux-d0186842ec5f456af531c66ee1ca64a8682695e6.tar.xz | |
net: vlan: Avoid using BUG() in vlan_proto_idx()
While we should always make sure that we specify a valid VLAN protocol
to vlan_proto_idx(), killing the machine when an invalid value is
specified is too harsh and not helpful for debugging. All callers are
capable of dealing with an error returned by vlan_proto_idx() so check
the index value and propagate it accordingly.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/8021q/vlan.c')
| -rw-r--r-- | net/8021q/vlan.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c index d4bcfd8f95bf..6c08de1116c1 100644 --- a/net/8021q/vlan.c +++ b/net/8021q/vlan.c @@ -57,6 +57,9 @@ static int vlan_group_prealloc_vid(struct vlan_group *vg, ASSERT_RTNL(); pidx = vlan_proto_idx(vlan_proto); + if (pidx < 0) + return -EINVAL; + vidx = vlan_id / VLAN_GROUP_ARRAY_PART_LEN; array = vg->vlan_devices_arrays[pidx][vidx]; if (array != NULL) |