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-rw-r--r--net/core/dev.c4
-rw-r--r--net/core/dev_addr_lists_test.c4
-rw-r--r--net/core/dst.c2
-rw-r--r--net/core/flow_dissector.c2
-rw-r--r--net/core/lwtunnel.c4
-rw-r--r--net/core/neighbour.c62
-rw-r--r--net/core/net_namespace.c7
-rw-r--r--net/core/pktgen.c37
-rw-r--r--net/core/skbuff.c38
-rw-r--r--net/core/skmsg.c15
-rw-r--r--net/core/sock_map.c7
-rw-r--r--net/core/sock_reuseport.c16
-rw-r--r--net/core/stream.c2
13 files changed, 113 insertions, 87 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index fa53830d0683..3be256051e99 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5136,11 +5136,13 @@ sch_handle_ingress(struct sk_buff *skb, struct packet_type **pt_prev, int *ret,
case TC_ACT_SHOT:
mini_qdisc_qstats_cpu_drop(miniq);
kfree_skb_reason(skb, SKB_DROP_REASON_TC_INGRESS);
+ *ret = NET_RX_DROP;
return NULL;
case TC_ACT_STOLEN:
case TC_ACT_QUEUED:
case TC_ACT_TRAP:
consume_skb(skb);
+ *ret = NET_RX_SUCCESS;
return NULL;
case TC_ACT_REDIRECT:
/* skb_mac_header check was done by cls/act_bpf, so
@@ -5153,8 +5155,10 @@ sch_handle_ingress(struct sk_buff *skb, struct packet_type **pt_prev, int *ret,
*another = true;
break;
}
+ *ret = NET_RX_SUCCESS;
return NULL;
case TC_ACT_CONSUMED:
+ *ret = NET_RX_SUCCESS;
return NULL;
default:
break;
diff --git a/net/core/dev_addr_lists_test.c b/net/core/dev_addr_lists_test.c
index 049cfbc58aa9..90e7e3811ae7 100644
--- a/net/core/dev_addr_lists_test.c
+++ b/net/core/dev_addr_lists_test.c
@@ -71,11 +71,11 @@ static void dev_addr_test_basic(struct kunit *test)
memset(addr, 2, sizeof(addr));
eth_hw_addr_set(netdev, addr);
- KUNIT_EXPECT_EQ(test, 0, memcmp(netdev->dev_addr, addr, sizeof(addr)));
+ KUNIT_EXPECT_MEMEQ(test, netdev->dev_addr, addr, sizeof(addr));
memset(addr, 3, sizeof(addr));
dev_addr_set(netdev, addr);
- KUNIT_EXPECT_EQ(test, 0, memcmp(netdev->dev_addr, addr, sizeof(addr)));
+ KUNIT_EXPECT_MEMEQ(test, netdev->dev_addr, addr, sizeof(addr));
}
static void dev_addr_test_sync_one(struct kunit *test)
diff --git a/net/core/dst.c b/net/core/dst.c
index bc9c9be4e080..a4e738d321ba 100644
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -174,7 +174,7 @@ void dst_release(struct dst_entry *dst)
net_warn_ratelimited("%s: dst:%p refcnt:%d\n",
__func__, dst, newrefcnt);
if (!newrefcnt)
- call_rcu(&dst->rcu_head, dst_destroy_rcu);
+ call_rcu_hurry(&dst->rcu_head, dst_destroy_rcu);
}
}
EXPORT_SYMBOL(dst_release);
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
index 25cd35f5922e..007730412947 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -296,7 +296,7 @@ skb_flow_dissect_ct(const struct sk_buff *skb,
key->ct_zone = ct->zone.id;
#endif
#if IS_ENABLED(CONFIG_NF_CONNTRACK_MARK)
- key->ct_mark = ct->mark;
+ key->ct_mark = READ_ONCE(ct->mark);
#endif
cl = nf_ct_labels_find(ct);
diff --git a/net/core/lwtunnel.c b/net/core/lwtunnel.c
index 6fac2f0ef074..711cd3b4347a 100644
--- a/net/core/lwtunnel.c
+++ b/net/core/lwtunnel.c
@@ -48,9 +48,11 @@ static const char *lwtunnel_encap_str(enum lwtunnel_encap_types encap_type)
return "RPL";
case LWTUNNEL_ENCAP_IOAM6:
return "IOAM6";
+ case LWTUNNEL_ENCAP_XFRM:
+ /* module autoload not supported for encap type */
+ return NULL;
case LWTUNNEL_ENCAP_IP6:
case LWTUNNEL_ENCAP_IP:
- case LWTUNNEL_ENCAP_XFRM:
case LWTUNNEL_ENCAP_NONE:
case __LWTUNNEL_ENCAP_MAX:
/* should not have got here */
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 3c4786b99907..f00a79fc301b 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -111,7 +111,7 @@ static void neigh_cleanup_and_release(struct neighbour *neigh)
unsigned long neigh_rand_reach_time(unsigned long base)
{
- return base ? prandom_u32_max(base) + (base >> 1) : 0;
+ return base ? get_random_u32_below(base) + (base >> 1) : 0;
}
EXPORT_SYMBOL(neigh_rand_reach_time);
@@ -307,7 +307,31 @@ static int neigh_del_timer(struct neighbour *n)
return 0;
}
-static void pneigh_queue_purge(struct sk_buff_head *list, struct net *net)
+static struct neigh_parms *neigh_get_dev_parms_rcu(struct net_device *dev,
+ int family)
+{
+ switch (family) {
+ case AF_INET:
+ return __in_dev_arp_parms_get_rcu(dev);
+ case AF_INET6:
+ return __in6_dev_nd_parms_get_rcu(dev);
+ }
+ return NULL;
+}
+
+static void neigh_parms_qlen_dec(struct net_device *dev, int family)
+{
+ struct neigh_parms *p;
+
+ rcu_read_lock();
+ p = neigh_get_dev_parms_rcu(dev, family);
+ if (p)
+ p->qlen--;
+ rcu_read_unlock();
+}
+
+static void pneigh_queue_purge(struct sk_buff_head *list, struct net *net,
+ int family)
{
struct sk_buff_head tmp;
unsigned long flags;
@@ -321,13 +345,7 @@ static void pneigh_queue_purge(struct sk_buff_head *list, struct net *net)
struct net_device *dev = skb->dev;
if (net == NULL || net_eq(dev_net(dev), net)) {
- struct in_device *in_dev;
-
- rcu_read_lock();
- in_dev = __in_dev_get_rcu(dev);
- if (in_dev)
- in_dev->arp_parms->qlen--;
- rcu_read_unlock();
+ neigh_parms_qlen_dec(dev, family);
__skb_unlink(skb, list);
__skb_queue_tail(&tmp, skb);
}
@@ -409,7 +427,8 @@ static int __neigh_ifdown(struct neigh_table *tbl, struct net_device *dev,
write_lock_bh(&tbl->lock);
neigh_flush_dev(tbl, dev, skip_perm);
pneigh_ifdown_and_unlock(tbl, dev);
- pneigh_queue_purge(&tbl->proxy_queue, dev_net(dev));
+ pneigh_queue_purge(&tbl->proxy_queue, dev ? dev_net(dev) : NULL,
+ tbl->family);
if (skb_queue_empty_lockless(&tbl->proxy_queue))
del_timer_sync(&tbl->proxy_timer);
return 0;
@@ -1621,13 +1640,8 @@ static void neigh_proxy_process(struct timer_list *t)
if (tdif <= 0) {
struct net_device *dev = skb->dev;
- struct in_device *in_dev;
- rcu_read_lock();
- in_dev = __in_dev_get_rcu(dev);
- if (in_dev)
- in_dev->arp_parms->qlen--;
- rcu_read_unlock();
+ neigh_parms_qlen_dec(dev, tbl->family);
__skb_unlink(skb, &tbl->proxy_queue);
if (tbl->proxy_redo && netif_running(dev)) {
@@ -1652,7 +1666,7 @@ void pneigh_enqueue(struct neigh_table *tbl, struct neigh_parms *p,
struct sk_buff *skb)
{
unsigned long sched_next = jiffies +
- prandom_u32_max(NEIGH_VAR(p, PROXY_DELAY));
+ get_random_u32_below(NEIGH_VAR(p, PROXY_DELAY));
if (p->qlen > NEIGH_VAR(p, PROXY_QLEN)) {
kfree_skb(skb);
@@ -1821,7 +1835,7 @@ int neigh_table_clear(int index, struct neigh_table *tbl)
cancel_delayed_work_sync(&tbl->managed_work);
cancel_delayed_work_sync(&tbl->gc_work);
del_timer_sync(&tbl->proxy_timer);
- pneigh_queue_purge(&tbl->proxy_queue, NULL);
+ pneigh_queue_purge(&tbl->proxy_queue, NULL, tbl->family);
neigh_ifdown(tbl, NULL);
if (atomic_read(&tbl->entries))
pr_crit("neighbour leakage\n");
@@ -3539,18 +3553,6 @@ static int proc_unres_qlen(struct ctl_table *ctl, int write,
return ret;
}
-static struct neigh_parms *neigh_get_dev_parms_rcu(struct net_device *dev,
- int family)
-{
- switch (family) {
- case AF_INET:
- return __in_dev_arp_parms_get_rcu(dev);
- case AF_INET6:
- return __in6_dev_nd_parms_get_rcu(dev);
- }
- return NULL;
-}
-
static void neigh_copy_dflt_parms(struct net *net, struct neigh_parms *p,
int index)
{
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 0ec2f5906a27..f64654df71a2 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -117,6 +117,7 @@ static int net_assign_generic(struct net *net, unsigned int id, void *data)
static int ops_init(const struct pernet_operations *ops, struct net *net)
{
+ struct net_generic *ng;
int err = -ENOMEM;
void *data = NULL;
@@ -135,7 +136,13 @@ static int ops_init(const struct pernet_operations *ops, struct net *net)
if (!err)
return 0;
+ if (ops->id && ops->size) {
cleanup:
+ ng = rcu_dereference_protected(net->gen,
+ lockdep_is_held(&pernet_ops_rwsem));
+ ng->ptr[*ops->id] = NULL;
+ }
+
kfree(data);
out:
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index c3763056c554..760238196db1 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -2324,7 +2324,7 @@ static inline int f_pick(struct pktgen_dev *pkt_dev)
pkt_dev->curfl = 0; /*reset */
}
} else {
- flow = prandom_u32_max(pkt_dev->cflows);
+ flow = get_random_u32_below(pkt_dev->cflows);
pkt_dev->curfl = flow;
if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
@@ -2380,9 +2380,8 @@ static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
__u16 t;
if (pkt_dev->flags & F_QUEUE_MAP_RND) {
- t = prandom_u32_max(pkt_dev->queue_map_max -
- pkt_dev->queue_map_min + 1) +
- pkt_dev->queue_map_min;
+ t = get_random_u32_inclusive(pkt_dev->queue_map_min,
+ pkt_dev->queue_map_max);
} else {
t = pkt_dev->cur_queue_map + 1;
if (t > pkt_dev->queue_map_max)
@@ -2411,7 +2410,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
__u32 tmp;
if (pkt_dev->flags & F_MACSRC_RND)
- mc = prandom_u32_max(pkt_dev->src_mac_count);
+ mc = get_random_u32_below(pkt_dev->src_mac_count);
else {
mc = pkt_dev->cur_src_mac_offset++;
if (pkt_dev->cur_src_mac_offset >=
@@ -2437,7 +2436,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
__u32 tmp;
if (pkt_dev->flags & F_MACDST_RND)
- mc = prandom_u32_max(pkt_dev->dst_mac_count);
+ mc = get_random_u32_below(pkt_dev->dst_mac_count);
else {
mc = pkt_dev->cur_dst_mac_offset++;
@@ -2469,18 +2468,17 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
}
if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
- pkt_dev->vlan_id = prandom_u32_max(4096);
+ pkt_dev->vlan_id = get_random_u32_below(4096);
}
if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
- pkt_dev->svlan_id = prandom_u32_max(4096);
+ pkt_dev->svlan_id = get_random_u32_below(4096);
}
if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
if (pkt_dev->flags & F_UDPSRC_RND)
- pkt_dev->cur_udp_src = prandom_u32_max(
- pkt_dev->udp_src_max - pkt_dev->udp_src_min) +
- pkt_dev->udp_src_min;
+ pkt_dev->cur_udp_src = get_random_u32_inclusive(pkt_dev->udp_src_min,
+ pkt_dev->udp_src_max - 1);
else {
pkt_dev->cur_udp_src++;
@@ -2491,9 +2489,8 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
if (pkt_dev->flags & F_UDPDST_RND) {
- pkt_dev->cur_udp_dst = prandom_u32_max(
- pkt_dev->udp_dst_max - pkt_dev->udp_dst_min) +
- pkt_dev->udp_dst_min;
+ pkt_dev->cur_udp_dst = get_random_u32_inclusive(pkt_dev->udp_dst_min,
+ pkt_dev->udp_dst_max - 1);
} else {
pkt_dev->cur_udp_dst++;
if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
@@ -2508,7 +2505,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
if (imn < imx) {
__u32 t;
if (pkt_dev->flags & F_IPSRC_RND)
- t = prandom_u32_max(imx - imn) + imn;
+ t = get_random_u32_inclusive(imn, imx - 1);
else {
t = ntohl(pkt_dev->cur_saddr);
t++;
@@ -2530,8 +2527,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
if (pkt_dev->flags & F_IPDST_RND) {
do {
- t = prandom_u32_max(imx - imn) +
- imn;
+ t = get_random_u32_inclusive(imn, imx - 1);
s = htonl(t);
} while (ipv4_is_loopback(s) ||
ipv4_is_multicast(s) ||
@@ -2578,9 +2574,8 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
__u32 t;
if (pkt_dev->flags & F_TXSIZE_RND) {
- t = prandom_u32_max(pkt_dev->max_pkt_size -
- pkt_dev->min_pkt_size) +
- pkt_dev->min_pkt_size;
+ t = get_random_u32_inclusive(pkt_dev->min_pkt_size,
+ pkt_dev->max_pkt_size - 1);
} else {
t = pkt_dev->cur_pkt_size + 1;
if (t > pkt_dev->max_pkt_size)
@@ -2589,7 +2584,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
pkt_dev->cur_pkt_size = t;
} else if (pkt_dev->n_imix_entries > 0) {
struct imix_pkt *entry;
- __u32 t = prandom_u32_max(IMIX_PRECISION);
+ __u32 t = get_random_u32_below(IMIX_PRECISION);
__u8 entry_index = pkt_dev->imix_distribution[t];
entry = &pkt_dev->imix_entries[entry_index];
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 1d9719e72f9d..88fa40571d0c 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -3971,7 +3971,7 @@ int skb_append_pagefrags(struct sk_buff *skb, struct page *page,
} else if (i < MAX_SKB_FRAGS) {
skb_zcopy_downgrade_managed(skb);
get_page(page);
- skb_fill_page_desc(skb, i, page, offset, size);
+ skb_fill_page_desc_noacc(skb, i, page, offset, size);
} else {
return -EMSGSIZE;
}
@@ -4134,23 +4134,25 @@ struct sk_buff *skb_segment(struct sk_buff *head_skb,
int i = 0;
int pos;
- if (list_skb && !list_skb->head_frag && skb_headlen(list_skb) &&
- (skb_shinfo(head_skb)->gso_type & SKB_GSO_DODGY)) {
- /* gso_size is untrusted, and we have a frag_list with a linear
- * non head_frag head.
- *
- * (we assume checking the first list_skb member suffices;
- * i.e if either of the list_skb members have non head_frag
- * head, then the first one has too).
- *
- * If head_skb's headlen does not fit requested gso_size, it
- * means that the frag_list members do NOT terminate on exact
- * gso_size boundaries. Hence we cannot perform skb_frag_t page
- * sharing. Therefore we must fallback to copying the frag_list
- * skbs; we do so by disabling SG.
- */
- if (mss != GSO_BY_FRAGS && mss != skb_headlen(head_skb))
- features &= ~NETIF_F_SG;
+ if ((skb_shinfo(head_skb)->gso_type & SKB_GSO_DODGY) &&
+ mss != GSO_BY_FRAGS && mss != skb_headlen(head_skb)) {
+ struct sk_buff *check_skb;
+
+ for (check_skb = list_skb; check_skb; check_skb = check_skb->next) {
+ if (skb_headlen(check_skb) && !check_skb->head_frag) {
+ /* gso_size is untrusted, and we have a frag_list with
+ * a linear non head_frag item.
+ *
+ * If head_skb's headlen does not fit requested gso_size,
+ * it means that the frag_list members do NOT terminate
+ * on exact gso_size boundaries. Hence we cannot perform
+ * skb_frag_t page sharing. Therefore we must fallback to
+ * copying the frag_list skbs; we do so by disabling SG.
+ */
+ features &= ~NETIF_F_SG;
+ break;
+ }
+ }
}
__skb_push(head_skb, doffset);
diff --git a/net/core/skmsg.c b/net/core/skmsg.c
index ca70525621c7..e6b9ced3eda8 100644
--- a/net/core/skmsg.c
+++ b/net/core/skmsg.c
@@ -500,11 +500,11 @@ bool sk_msg_is_readable(struct sock *sk)
}
EXPORT_SYMBOL_GPL(sk_msg_is_readable);
-static struct sk_msg *alloc_sk_msg(void)
+static struct sk_msg *alloc_sk_msg(gfp_t gfp)
{
struct sk_msg *msg;
- msg = kzalloc(sizeof(*msg), __GFP_NOWARN | GFP_KERNEL);
+ msg = kzalloc(sizeof(*msg), gfp | __GFP_NOWARN);
if (unlikely(!msg))
return NULL;
sg_init_marker(msg->sg.data, NR_MSG_FRAG_IDS);
@@ -520,7 +520,7 @@ static struct sk_msg *sk_psock_create_ingress_msg(struct sock *sk,
if (!sk_rmem_schedule(sk, skb, skb->truesize))
return NULL;
- return alloc_sk_msg();
+ return alloc_sk_msg(GFP_KERNEL);
}
static int sk_psock_skb_ingress_enqueue(struct sk_buff *skb,
@@ -597,7 +597,7 @@ static int sk_psock_skb_ingress(struct sk_psock *psock, struct sk_buff *skb,
static int sk_psock_skb_ingress_self(struct sk_psock *psock, struct sk_buff *skb,
u32 off, u32 len)
{
- struct sk_msg *msg = alloc_sk_msg();
+ struct sk_msg *msg = alloc_sk_msg(GFP_ATOMIC);
struct sock *sk = psock->sk;
int err;
@@ -803,16 +803,13 @@ static void sk_psock_link_destroy(struct sk_psock *psock)
}
}
-void sk_psock_stop(struct sk_psock *psock, bool wait)
+void sk_psock_stop(struct sk_psock *psock)
{
spin_lock_bh(&psock->ingress_lock);
sk_psock_clear_state(psock, SK_PSOCK_TX_ENABLED);
sk_psock_cork_free(psock);
__sk_psock_zap_ingress(psock);
spin_unlock_bh(&psock->ingress_lock);
-
- if (wait)
- cancel_work_sync(&psock->work);
}
static void sk_psock_done_strp(struct sk_psock *psock);
@@ -850,7 +847,7 @@ void sk_psock_drop(struct sock *sk, struct sk_psock *psock)
sk_psock_stop_verdict(sk, psock);
write_unlock_bh(&sk->sk_callback_lock);
- sk_psock_stop(psock, false);
+ sk_psock_stop(psock);
INIT_RCU_WORK(&psock->rwork, sk_psock_destroy);
queue_rcu_work(system_wq, &psock->rwork);
diff --git a/net/core/sock_map.c b/net/core/sock_map.c
index a660baedd9e7..81beb16ab1eb 100644
--- a/net/core/sock_map.c
+++ b/net/core/sock_map.c
@@ -1596,7 +1596,7 @@ void sock_map_destroy(struct sock *sk)
saved_destroy = psock->saved_destroy;
sock_map_remove_links(sk, psock);
rcu_read_unlock();
- sk_psock_stop(psock, false);
+ sk_psock_stop(psock);
sk_psock_put(sk, psock);
saved_destroy(sk);
}
@@ -1619,9 +1619,10 @@ void sock_map_close(struct sock *sk, long timeout)
saved_close = psock->saved_close;
sock_map_remove_links(sk, psock);
rcu_read_unlock();
- sk_psock_stop(psock, true);
- sk_psock_put(sk, psock);
+ sk_psock_stop(psock);
release_sock(sk);
+ cancel_work_sync(&psock->work);
+ sk_psock_put(sk, psock);
saved_close(sk, timeout);
}
EXPORT_SYMBOL_GPL(sock_map_close);
diff --git a/net/core/sock_reuseport.c b/net/core/sock_reuseport.c
index 5daa1fa54249..fb90e1e00773 100644
--- a/net/core/sock_reuseport.c
+++ b/net/core/sock_reuseport.c
@@ -21,6 +21,22 @@ static DEFINE_IDA(reuseport_ida);
static int reuseport_resurrect(struct sock *sk, struct sock_reuseport *old_reuse,
struct sock_reuseport *reuse, bool bind_inany);
+void reuseport_has_conns_set(struct sock *sk)
+{
+ struct sock_reuseport *reuse;
+
+ if (!rcu_access_pointer(sk->sk_reuseport_cb))
+ return;
+
+ spin_lock_bh(&reuseport_lock);
+ reuse = rcu_dereference_protected(sk->sk_reuseport_cb,
+ lockdep_is_held(&reuseport_lock));
+ if (likely(reuse))
+ reuse->has_conns = 1;
+ spin_unlock_bh(&reuseport_lock);
+}
+EXPORT_SYMBOL(reuseport_has_conns_set);
+
static int reuseport_sock_index(struct sock *sk,
const struct sock_reuseport *reuse,
bool closed)
diff --git a/net/core/stream.c b/net/core/stream.c
index 75fded8495f5..5b1fe2b82eac 100644
--- a/net/core/stream.c
+++ b/net/core/stream.c
@@ -123,7 +123,7 @@ int sk_stream_wait_memory(struct sock *sk, long *timeo_p)
DEFINE_WAIT_FUNC(wait, woken_wake_function);
if (sk_stream_memory_free(sk))
- current_timeo = vm_wait = prandom_u32_max(HZ / 5) + 2;
+ current_timeo = vm_wait = get_random_u32_below(HZ / 5) + 2;
add_wait_queue(sk_sleep(sk), &wait);
generated by cgit v1.2.3 (git 2.46.0) at 2025-08-27 06:57:00 +0000