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netfilter: ipset: Pass lockdep expression to RCU lists 

ip_set_type_list is traversed using list_for_each_entry_rcu
outside an RCU read-side critical section but under the protection
of ip_set_type_mutex.

Hence, add corresponding lockdep expression to silence false-positive
warnings, and harden RCU lists.

Signed-off-by: Amol Grover <frextrite@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Amol Grover 2020-02-16 22:56:54 +05:30 committed by Pablo Neira Ayuso
parent 7fb6f78df7
commit b135fc0801
1 changed files with 2 additions and 1 deletions
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3
net/netfilter/ipset/ip_set_core.c
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@ -86,7 +86,8 @@ find_set_type(const char *name, u8 family, u8 revision)
{
struct ip_set_type *type;
list_for_each_entry_rcu(type, &ip_set_type_list, list)
list_for_each_entry_rcu(type, &ip_set_type_list, list,
lockdep_is_held(&ip_set_type_mutex))
if (STRNCMP(type->name, name) &&
(type->family == family ||
type->family == NFPROTO_UNSPEC) &&