diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2012-10-28 11:18:08 +0100 |
|---|---|---|
| committer | Steven Rostedt <rostedt@rostedt.homelinux.com> | 2013-08-16 22:00:16 -0400 |
| commit | 32b26dc2b3f1a2cb4ba9e147f453edd0b5372fcb (patch) | |
| tree | 900317691668a98299f60eb9fd208df524f346d4 /net | |
| parent | f6746ee2d2f086287b00cc775fdefec76bb3850b (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>
Cc: stable-rt@vger.kernel.org
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 afca6c78948c..aa3f87b8d43b 100644 --- a/net/netfilter/core.c +++ b/net/netfilter/core.c @@ -20,11 +20,17 @@ #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; |