e959d8121f
xfrm_policy_afinfo_lock can be taken in bh context, at: [<c013fe1a>] lockdep_acquire_read+0x54/0x6d [<c0f6e024>] _read_lock+0x15/0x22 [<c0e8fcdb>] xfrm_policy_get_afinfo+0x1a/0x3d [<c0e8fd10>] xfrm_decode_session+0x12/0x32 [<c0e66094>] ip_route_me_harder+0x1c9/0x25b [<c0e770d3>] ip_nat_local_fn+0x94/0xad [<c0e2bbc8>] nf_iterate+0x2e/0x7a [<c0e2bc50>] nf_hook_slow+0x3c/0x9e [<c0e3a342>] ip_push_pending_frames+0x2de/0x3a7 [<c0e53e19>] icmp_push_reply+0x136/0x141 [<c0e543fb>] icmp_reply+0x118/0x1a0 [<c0e54581>] icmp_echo+0x44/0x46 [<c0e53fad>] icmp_rcv+0x111/0x138 [<c0e36764>] ip_local_deliver+0x150/0x1f9 [<c0e36be2>] ip_rcv+0x3d5/0x413 [<c0df760f>] netif_receive_skb+0x337/0x356 [<c0df76c3>] process_backlog+0x95/0x110 [<c0df5fe2>] net_rx_action+0xa5/0x16d [<c012d8a7>] __do_softirq+0x6f/0xe6 [<c0105ec2>] do_softirq+0x52/0xb1 this means that all write-locking of xfrm_policy_afinfo_lock must be bh-safe. This patch fixes xfrm_policy_register_afinfo() and xfrm_policy_unregister_afinfo(). Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: David S. Miller <davem@davemloft.net> |
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|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| xfrm_algo.c | ||
| xfrm_input.c | ||
| xfrm_policy.c | ||
| xfrm_state.c | ||
| xfrm_user.c | ||