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Diffstat (limited to 'net/sched/cls_u32.c')
-rw-r--r--net/sched/cls_u32.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
index 4f522143811e..7416a5c73b2a 100644
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -134,10 +134,12 @@ next_knode:
134#endif 134#endif
135 135
136 for (i = n->sel.nkeys; i>0; i--, key++) { 136 for (i = n->sel.nkeys; i>0; i--, key++) {
137 unsigned int toff; 137 int toff = off + key->off + (off2 & key->offmask);
138 __be32 *data, _data; 138 __be32 *data, _data;
139 139
140 toff = off + key->off + (off2 & key->offmask); 140 if (skb_headroom(skb) + toff < 0)
141 goto out;
142
141 data = skb_header_pointer(skb, toff, 4, &_data); 143 data = skb_header_pointer(skb, toff, 4, &_data);
142 if (!data) 144 if (!data)
143 goto out; 145 goto out;