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authorPablo Neira Ayuso <pablo@netfilter.org>2014-07-31 22:38:46 +0400
committerPablo Neira Ayuso <pablo@netfilter.org>2014-08-08 18:47:23 +0400
commit7926dbfa4bc14e27f4e18a6184a031a1c1e077dc (patch)
tree2a92a55987f95c1cda659732c3792b72bb60e942 /net/bridge
parentb88825de8545ad252c31543fef13cadf4de7a2bc (diff)
downloadlinux-7926dbfa4bc14e27f4e18a6184a031a1c1e077dc.tar.xz
netfilter: don't use mutex_lock_interruptible()
Eric Dumazet reports that getsockopt() or setsockopt() sometimes returns -EINTR instead of -ENOPROTOOPT, causing headaches to application developers. This patch replaces all the mutex_lock_interruptible() by mutex_lock() in the netfilter tree, as there is no reason we should sleep for a long time there. Reported-by: Eric Dumazet <edumazet@google.com> Suggested-by: Patrick McHardy <kaber@trash.net> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Acked-by: Julian Anastasov <ja@ssi.bg>
Diffstat (limited to 'net/bridge')
-rw-r--r--net/bridge/netfilter/ebtables.c10
1 files changed, 2 insertions, 8 deletions
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 1059ed3bc255..6d69631b9f4d 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -327,10 +327,7 @@ find_inlist_lock_noload(struct list_head *head, const char *name, int *error,
char name[EBT_FUNCTION_MAXNAMELEN];
} *e;
- *error = mutex_lock_interruptible(mutex);
- if (*error != 0)
- return NULL;
-
+ mutex_lock(mutex);
list_for_each_entry(e, head, list) {
if (strcmp(e->name, name) == 0)
return e;
@@ -1203,10 +1200,7 @@ ebt_register_table(struct net *net, const struct ebt_table *input_table)
table->private = newinfo;
rwlock_init(&table->lock);
- ret = mutex_lock_interruptible(&ebt_mutex);
- if (ret != 0)
- goto free_chainstack;
-
+ mutex_lock(&ebt_mutex);
list_for_each_entry(t, &net->xt.tables[NFPROTO_BRIDGE], list) {
if (strcmp(t->name, table->name) == 0) {
ret = -EEXIST;