[Devel] [PATCH RHEL9 COMMIT] ms/netfilter: propagate net to nf_bridge_get_physindev
Konstantin Khorenko
khorenko at virtuozzo.com
Tue Jan 23 22:13:53 MSK 2024
The commit is pushed to "branch-rh9-5.14.0-362.8.1.vz9.35.x-ovz" and will appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh9-5.14.0-362.8.1.vz9.35.7
------>
commit a2baff1c6053fc2d621123038bc0ad542a3d08a6
Author: Pavel Tikhomirov <ptikhomirov at virtuozzo.com>
Date: Tue Jan 23 11:16:20 2024 +0800
ms/netfilter: propagate net to nf_bridge_get_physindev
This is a preparation patch for replacing physindev with physinif on
nf_bridge_info structure. We will use dev_get_by_index_rcu to resolve
device, when needed, and it requires net to be available.
Signed-off-by: Pavel Tikhomirov <ptikhomirov at virtuozzo.com>
Reviewed-by: Simon Horman <horms at kernel.org>
Signed-off-by: Pablo Neira Ayuso <pablo at netfilter.org>
(cherry picked from commit a54e72197037d2c9bfcd70dddaac8c8ccb5b41ba)
https://virtuozzo.atlassian.net/browse/PSBM-153269
Signed-off-by: Pavel Tikhomirov <ptikhomirov at virtuozzo.com>
======
Patchset description:
netlink: bridge: fix nf_bridge->physindev use after free
This is a backport of mainstream version of the fix to vz9:
https://lore.kernel.org/netdev/20240111150645.85637-1-ptikhomirov@virtuozzo.com/
https://virtuozzo.atlassian.net/browse/PSBM-153269
Feature: fix ms/net
---
include/linux/netfilter_bridge.h | 2 +-
net/ipv4/netfilter/nf_reject_ipv4.c | 2 +-
net/ipv6/netfilter/nf_reject_ipv6.c | 2 +-
net/netfilter/ipset/ip_set_hash_netiface.c | 8 ++++----
net/netfilter/nf_log_syslog.c | 13 +++++++------
net/netfilter/nf_queue.c | 2 +-
net/netfilter/xt_physdev.c | 2 +-
7 files changed, 16 insertions(+), 15 deletions(-)
diff --git a/include/linux/netfilter_bridge.h b/include/linux/netfilter_bridge.h
index f980edfdd278..e927b9a15a55 100644
--- a/include/linux/netfilter_bridge.h
+++ b/include/linux/netfilter_bridge.h
@@ -56,7 +56,7 @@ static inline int nf_bridge_get_physoutif(const struct sk_buff *skb)
}
static inline struct net_device *
-nf_bridge_get_physindev(const struct sk_buff *skb)
+nf_bridge_get_physindev(const struct sk_buff *skb, struct net *net)
{
const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb);
diff --git a/net/ipv4/netfilter/nf_reject_ipv4.c b/net/ipv4/netfilter/nf_reject_ipv4.c
index f2edb40c0db0..63c91aa2375f 100644
--- a/net/ipv4/netfilter/nf_reject_ipv4.c
+++ b/net/ipv4/netfilter/nf_reject_ipv4.c
@@ -286,7 +286,7 @@ void nf_send_reset(struct net *net, struct sock *sk, struct sk_buff *oldskb,
* build the eth header using the original destination's MAC as the
* source, and send the RST packet directly.
*/
- br_indev = nf_bridge_get_physindev(oldskb);
+ br_indev = nf_bridge_get_physindev(oldskb, net);
if (br_indev) {
struct ethhdr *oeth = eth_hdr(oldskb);
diff --git a/net/ipv6/netfilter/nf_reject_ipv6.c b/net/ipv6/netfilter/nf_reject_ipv6.c
index dffeaaaadcde..b138ee4ebc6a 100644
--- a/net/ipv6/netfilter/nf_reject_ipv6.c
+++ b/net/ipv6/netfilter/nf_reject_ipv6.c
@@ -353,7 +353,7 @@ void nf_send_reset6(struct net *net, struct sock *sk, struct sk_buff *oldskb,
* build the eth header using the original destination's MAC as the
* source, and send the RST packet directly.
*/
- br_indev = nf_bridge_get_physindev(oldskb);
+ br_indev = nf_bridge_get_physindev(oldskb, net);
if (br_indev) {
struct ethhdr *oeth = eth_hdr(oldskb);
diff --git a/net/netfilter/ipset/ip_set_hash_netiface.c b/net/netfilter/ipset/ip_set_hash_netiface.c
index 031073286236..bf1a3851ba5a 100644
--- a/net/netfilter/ipset/ip_set_hash_netiface.c
+++ b/net/netfilter/ipset/ip_set_hash_netiface.c
@@ -138,9 +138,9 @@ hash_netiface4_data_next(struct hash_netiface4_elem *next,
#include "ip_set_hash_gen.h"
#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
-static const char *get_physindev_name(const struct sk_buff *skb)
+static const char *get_physindev_name(const struct sk_buff *skb, struct net *net)
{
- struct net_device *dev = nf_bridge_get_physindev(skb);
+ struct net_device *dev = nf_bridge_get_physindev(skb, net);
return dev ? dev->name : NULL;
}
@@ -177,7 +177,7 @@ hash_netiface4_kadt(struct ip_set *set, const struct sk_buff *skb,
if (opt->cmdflags & IPSET_FLAG_PHYSDEV) {
#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
- const char *eiface = SRCDIR ? get_physindev_name(skb) :
+ const char *eiface = SRCDIR ? get_physindev_name(skb, xt_net(par)) :
get_physoutdev_name(skb);
if (!eiface)
@@ -395,7 +395,7 @@ hash_netiface6_kadt(struct ip_set *set, const struct sk_buff *skb,
if (opt->cmdflags & IPSET_FLAG_PHYSDEV) {
#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
- const char *eiface = SRCDIR ? get_physindev_name(skb) :
+ const char *eiface = SRCDIR ? get_physindev_name(skb, xt_net(par)) :
get_physoutdev_name(skb);
if (!eiface)
diff --git a/net/netfilter/nf_log_syslog.c b/net/netfilter/nf_log_syslog.c
index b7e4e6791038..baf609ff5fbd 100644
--- a/net/netfilter/nf_log_syslog.c
+++ b/net/netfilter/nf_log_syslog.c
@@ -117,7 +117,8 @@ nf_log_dump_packet_common(struct nf_log_buf *m, u8 pf,
unsigned int hooknum, const struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
- const struct nf_loginfo *loginfo, const char *prefix)
+ const struct nf_loginfo *loginfo, const char *prefix,
+ struct net *net)
{
const struct net_device *physoutdev __maybe_unused;
const struct net_device *physindev __maybe_unused;
@@ -127,7 +128,7 @@ nf_log_dump_packet_common(struct nf_log_buf *m, u8 pf,
in ? in->name : "",
out ? out->name : "");
#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
- physindev = nf_bridge_get_physindev(skb);
+ physindev = nf_bridge_get_physindev(skb, net);
if (physindev && in != physindev)
nf_log_buf_add(m, "PHYSIN=%s ", physindev->name);
physoutdev = nf_bridge_get_physoutdev(skb);
@@ -155,7 +156,7 @@ static void nf_log_arp_packet(struct net *net, u_int8_t pf,
loginfo = &default_loginfo;
nf_log_dump_packet_common(m, pf, hooknum, skb, in, out, loginfo,
- prefix);
+ prefix, net);
dump_arp_packet(m, loginfo, skb, skb_network_offset(skb));
nf_log_buf_close(m, net);
@@ -853,7 +854,7 @@ static void nf_log_ip_packet(struct net *net, u_int8_t pf,
loginfo = &default_loginfo;
nf_log_dump_packet_common(m, pf, hooknum, skb, in,
- out, loginfo, prefix);
+ out, loginfo, prefix, net);
if (in)
dump_mac_header(m, loginfo, skb);
@@ -889,7 +890,7 @@ static void nf_log_ip6_packet(struct net *net, u_int8_t pf,
loginfo = &default_loginfo;
nf_log_dump_packet_common(m, pf, hooknum, skb, in, out,
- loginfo, prefix);
+ loginfo, prefix, net);
if (in)
dump_mac_header(m, loginfo, skb);
@@ -925,7 +926,7 @@ static void nf_log_unknown_packet(struct net *net, u_int8_t pf,
loginfo = &default_loginfo;
nf_log_dump_packet_common(m, pf, hooknum, skb, in, out, loginfo,
- prefix);
+ prefix, net);
dump_mac_header(m, loginfo, skb);
diff --git a/net/netfilter/nf_queue.c b/net/netfilter/nf_queue.c
index 0077354d3258..6fef0e321120 100644
--- a/net/netfilter/nf_queue.c
+++ b/net/netfilter/nf_queue.c
@@ -84,7 +84,7 @@ static void __nf_queue_entry_init_physdevs(struct nf_queue_entry *entry)
const struct sk_buff *skb = entry->skb;
if (nf_bridge_info_exists(skb)) {
- entry->physin = nf_bridge_get_physindev(skb);
+ entry->physin = nf_bridge_get_physindev(skb, entry->state.net);
entry->physout = nf_bridge_get_physoutdev(skb);
} else {
entry->physin = NULL;
diff --git a/net/netfilter/xt_physdev.c b/net/netfilter/xt_physdev.c
index ec6ed6fda96c..343e65f377d4 100644
--- a/net/netfilter/xt_physdev.c
+++ b/net/netfilter/xt_physdev.c
@@ -59,7 +59,7 @@ physdev_mt(const struct sk_buff *skb, struct xt_action_param *par)
(!!outdev ^ !(info->invert & XT_PHYSDEV_OP_BRIDGED)))
return false;
- physdev = nf_bridge_get_physindev(skb);
+ physdev = nf_bridge_get_physindev(skb, xt_net(par));
indev = physdev ? physdev->name : NULL;
if ((info->bitmask & XT_PHYSDEV_OP_ISIN &&
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