diff options
| author | Wei Wang <weiwan@google.com> | 2017-10-06 22:06:05 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-07 23:22:58 +0300 |
| commit | 51e398e86d61b69b9a4be49ff7f6afeb87530df1 (patch) | |
| tree | b37f6853d0bdedc6a46cd44d1f2484208ace1ca5 /include | |
| parent | a94b9367e044ba672c9f4105eb1516ff6ff4948a (diff) | |
| download | linux-51e398e86d61b69b9a4be49ff7f6afeb87530df1.tar.xz | |
ipv6: don't release rt->rt6i_pcpu memory during rt6_release()
After rwlock is replaced with rcu and spinlock, route lookup can happen
simultanously with route deletion.
This patch removes the call to free_percpu(rt->rt6i_pcpu) from
rt6_release() to avoid the race condition between rt6_release() and
rt6_get_pcpu_route(). And as free_percpu(rt->rt6i_pcpu) is already
called in ip6_dst_destroy() after the rcu grace period, it is safe to do
this change.
Signed-off-by: Wei Wang <weiwan@google.com>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions