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net: sched: cls_u32: rcu can not be last node

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tc_u32_sel 'sel' in tc_u_knode expects to be the last element in the
structure and pads the structure with tc_u32_key fields for each key.

 kzalloc(sizeof(*n) + s->nkeys*sizeof(struct tc_u32_key), GFP_KERNEL)

CC: Eric Dumazet <edumazet@google.com>
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
John Fastabend 2014-09-17 11:11:46 -07:00 committed by David S. Miller
parent ab34f64808
commit 4e2840eee6
1 changed files with 4 additions and 1 deletions

5
net/sched/cls_u32.c
View File

@ -64,8 +64,11 @@ struct tc_u_knode {
u32 __percpu *pcpu_success; u32 __percpu *pcpu_success;
#endif #endif
struct tcf_proto *tp; struct tcf_proto *tp;
struct tc_u32_sel sel;
struct rcu_head rcu; struct rcu_head rcu;
/* The 'sel' field MUST be the last field in structure to allow for
* tc_u32_keys allocated at end of structure.
*/
struct tc_u32_sel sel;
}; };
struct tc_u_hnode { struct tc_u_hnode {