diff options
| author | Neil Horman <nhorman@tuxdriver.com> | 2012-04-27 10:11:49 +0000 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2012-08-10 00:25:15 +0100 |
| commit | ea39e338f9bb5eb5b3e568cbe7475549d67ef128 (patch) | |
| tree | 59193b47bb9febc821cea1a39c24b673f192cb83 /net/tipc/ref.c | |
| parent | caaf10b6ccdb774387b298f9935dc9a81b4a86bc (diff) | |
drop_monitor: Make updating data->skb smp safe
commit 3885ca785a3618593226687ced84f3f336dc3860 upstream.
Eric Dumazet pointed out to me that the drop_monitor protocol has some holes in
its smp protections. Specifically, its possible to replace data->skb while its
being written. This patch corrects that by making data->skb an rcu protected
variable. That will prevent it from being overwritten while a tracepoint is
modifying it.
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: David Miller <davem@davemloft.net>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'net/tipc/ref.c')
0 files changed, 0 insertions, 0 deletions