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| author |   Patrick McHardy <kaber@trash.net> | 2007-02-12 11:13:14 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2007-02-12 11:13:14 -0800 |
| commit | abbaccda4c364815b8b1a82c45a94f60760e13e1 (patch) | |
| tree | 58e28cc25db59456092fc760b7a29e6d223610c5 /net/netfilter/nf_conntrack_core.c | |
| parent | [NETFILTER]: nf_conntrack: properly use RCU API for nf_ct_protos/nf_ct_l3protos arrays (diff) | |
| download | linux-dev-abbaccda4c364815b8b1a82c45a94f60760e13e1.tar.xz linux-dev-abbaccda4c364815b8b1a82c45a94f60760e13e1.zip | |
[NETFILTER]: ip_conntrack: fix invalid conntrack statistics RCU assumption
CONNTRACK_STAT_INC assumes rcu_read_lock in nf_hook_slow disables
preemption as well, making it legal to use __get_cpu_var without
disabling preemption manually. The assumption is not correct anymore
with preemptable RCU, additionally we need to protect against softirqs
when not holding ip_conntrack_lock.
Add CONNTRACK_STAT_INC_ATOMIC macro, which disables local softirqs,
and use where necessary.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions