diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2012-10-28 11:18:08 +0100 |
|---|---|---|
| committer | Anders Roxell <anders.roxell@linaro.org> | 2015-07-26 11:08:49 +0200 |
| commit | f0d1f4a53082b28cc1c170d0dfe0c124e2743821 (patch) | |
| tree | edc0700399ddbab5ed291ea5bc38f96f00ee2f68 /net | |
| parent | 25a491b16eae511978b135f01274bbd092320937 (diff) | |
net: netfilter: Serialize xt_write_recseq sections on RT
The netfilter code relies only on the implicit semantics of
local_bh_disable() for serializing wt_write_recseq sections. RT breaks
that and needs explicit serialization here.
Reported-by: Peter LaDow <petela@gocougs.wsu.edu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'net')
| -rw-r--r-- | net/netfilter/core.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/netfilter/core.c b/net/netfilter/core.c index e6163017c42d..f0adf700b350 100644 --- a/net/netfilter/core.c +++ b/net/netfilter/core.c @@ -22,11 +22,17 @@ #include <linux/proc_fs.h> #include <linux/mutex.h> #include <linux/slab.h> +#include <linux/locallock.h> #include <net/net_namespace.h> #include <net/sock.h> #include "nf_internals.h" +#ifdef CONFIG_PREEMPT_RT_BASE +DEFINE_LOCAL_IRQ_LOCK(xt_write_lock); +EXPORT_PER_CPU_SYMBOL(xt_write_lock); +#endif + static DEFINE_MUTEX(afinfo_mutex); const struct nf_afinfo __rcu *nf_afinfo[NFPROTO_NUMPROTO] __read_mostly; |