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(parent: 50dc875) | patch
udp: ipv4: do not use sk_dst_lock from softirq context
authorEric Dumazet <edumazet@google.com>
Sun, 15 Dec 2013 18:53:46 +0000 (10:53 -0800)
committerDavid S. Miller <davem@davemloft.net>
Tue, 17 Dec 2013 19:50:58 +0000 (14:50 -0500)
commite47eb5dfb296bf217e9ebee7b2f07486670b9c1b
treecad273de648996d679f3cbfba678b84ff14f40b7tree | snapshot (tar.gz zip)
parent50dc875f2e6e2e04aed3b3033eb0ac99192d6d02commit | diff
udp: ipv4: do not use sk_dst_lock from softirq context

Using sk_dst_lock from softirq context is not supported right now.

Instead of adding BH protection everywhere,
udp_sk_rx_dst_set() can instead use xchg(), as suggested
by David.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Fixes: 975022310233 ("udp: ipv4: must add synchronization in udp_sk_rx_dst_set()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/udp.c diff | blob | blame | history