diff --git a/drivers/pci/slot.c b/drivers/pci/slot.c
index ed2077e7470aef1e232929dd28daf47df66c41ca..a42e2cf774fd89946bb835e295be06ad7221f1e1 100644
--- a/drivers/pci/slot.c
+++ b/drivers/pci/slot.c
@@ -79,6 +79,7 @@ static void pci_slot_release(struct kobject *kobj)
 	up_read(&pci_bus_sem);
 
 	list_del(&slot->list);
+	pci_bus_put(slot->bus);
 
 	kfree(slot);
 }
@@ -260,7 +261,7 @@ struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr,
 		goto err;
 	}
 
-	slot->bus = parent;
+	slot->bus = pci_bus_get(parent);
 	slot->number = slot_nr;
 
 	slot->kobj.kset = pci_slots_kset;
@@ -268,6 +269,7 @@ struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr,
 	slot_name = make_slot_name(name);
 	if (!slot_name) {
 		err = -ENOMEM;
+		pci_bus_put(slot->bus);
 		kfree(slot);
 		goto err;
 	}
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 146056858135e304fce9d0a173d8d667427b5394..930586b1cc578ce3c984adb88ba225046fcd1e61 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -906,13 +906,18 @@ void rtc_timer_do_work(struct work_struct *work)
 	struct timerqueue_node *next;
 	ktime_t now;
 	struct rtc_time tm;
+	int err;
 
 	struct rtc_device *rtc =
 		container_of(work, struct rtc_device, irqwork);
 
 	mutex_lock(&rtc->ops_lock);
 again:
-	__rtc_read_time(rtc, &tm);
+	err = __rtc_read_time(rtc, &tm);
+	if (err) {
+		mutex_unlock(&rtc->ops_lock);
+		return;
+	}
 	now = rtc_tm_to_ktime(tm);
 	while ((next = timerqueue_getnext(&rtc->timerqueue))) {
 		if (next->expires > now)
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 756523e5402a80b82c9e1146b897cb1f2bdf5f8c..4493fc68efcab17ff28aa77fbf2248cbb2f42acf 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -1875,6 +1875,7 @@ static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock,
 	chan = l2cap_chan_create();
 	if (!chan) {
 		sk_free(sk);
+		sock->sk = NULL;
 		return NULL;
 	}
 
diff --git a/net/core/filter.c b/net/core/filter.c
index f7ac0fe7e5d375419496e4362d8db9fde453c1bd..97abd0c98d7974a227f6e865dbee2726cdd3342c 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -2890,8 +2890,10 @@ static const struct bpf_func_proto bpf_msg_push_data_proto = {
 
 static void sk_msg_shift_left(struct sk_msg *msg, int i)
 {
+	struct scatterlist *sge = sk_msg_elem(msg, i);
 	int prev;
 
+	put_page(sg_page(sge));
 	do {
 		prev = i;
 		sk_msg_iter_var_next(i);
@@ -2928,6 +2930,9 @@ BPF_CALL_4(bpf_msg_pop_data, struct sk_msg *, msg, u32, start,
 	if (unlikely(flags))
 		return -EINVAL;
 
+	if (unlikely(len == 0))
+		return 0;
+
 	/* First find the starting scatterlist element */
 	i = msg->sg.start;
 	do {
@@ -2940,7 +2945,7 @@ BPF_CALL_4(bpf_msg_pop_data, struct sk_msg *, msg, u32, start,
 	} while (i != msg->sg.end);
 
 	/* Bounds checks: start and pop must be inside message */
-	if (start >= offset + l || last >= msg->sg.size)
+	if (start >= offset + l || last > msg->sg.size)
 		return -EINVAL;
 
 	space = MAX_MSG_FRAGS - sk_msg_elem_used(msg);
@@ -2969,12 +2974,12 @@ BPF_CALL_4(bpf_msg_pop_data, struct sk_msg *, msg, u32, start,
 	 */
 	if (start != offset) {
 		struct scatterlist *nsge, *sge = sk_msg_elem(msg, i);
-		int a = start;
+		int a = start - offset;
 		int b = sge->length - pop - a;
 
 		sk_msg_iter_var_next(i);
 
-		if (pop < sge->length - a) {
+		if (b > 0) {
 			if (space) {
 				sge->length = a;
 				sk_msg_shift_right(msg, i);
@@ -2993,7 +2998,6 @@ BPF_CALL_4(bpf_msg_pop_data, struct sk_msg *, msg, u32, start,
 				if (unlikely(!page))
 					return -ENOMEM;
 
-				sge->length = a;
 				orig = sg_page(sge);
 				from = sg_virt(sge);
 				to = page_address(page);
@@ -3003,7 +3007,7 @@ BPF_CALL_4(bpf_msg_pop_data, struct sk_msg *, msg, u32, start,
 				put_page(orig);
 			}
 			pop = 0;
-		} else if (pop >= sge->length - a) {
+		} else {
 			pop -= (sge->length - a);
 			sge->length = a;
 		}
@@ -3037,7 +3041,6 @@ BPF_CALL_4(bpf_msg_pop_data, struct sk_msg *, msg, u32, start,
 			pop -= sge->length;
 			sk_msg_shift_left(msg, i);
 		}
-		sk_msg_iter_var_next(i);
 	}
 
 	sk_mem_uncharge(msg->sk, len - pop);
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 49f94700e2ab1aa4f0c62def72ce7d81ea2e4f34..17cc21b28755056097c988c6eda0bb4fbf357178 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -376,32 +376,30 @@ static int inet_create(struct net *net, struct socket *sock, int protocol,
 		inet->inet_sport = htons(inet->inet_num);
 		/* Add to protocol hash chains. */
 		err = sk->sk_prot->hash(sk);
-		if (err) {
-			sk_common_release(sk);
-			goto out;
-		}
+		if (err)
+			goto out_sk_release;
 	}
 
 	if (sk->sk_prot->init) {
 		err = sk->sk_prot->init(sk);
-		if (err) {
-			sk_common_release(sk);
-			goto out;
-		}
+		if (err)
+			goto out_sk_release;
 	}
 
 	if (!kern) {
 		err = BPF_CGROUP_RUN_PROG_INET_SOCK(sk);
-		if (err) {
-			sk_common_release(sk);
-			goto out;
-		}
+		if (err)
+			goto out_sk_release;
 	}
 out:
 	return err;
 out_rcu_unlock:
 	rcu_read_unlock();
 	goto out;
+out_sk_release:
+	sk_common_release(sk);
+	sock->sk = NULL;
+	goto out;
 }
 
 
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 1a294c45dc1f17928951ca3652a8370bbe8a821a..a5578ba2f3423a441df50ae6b80abae5bfb59eaf 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -257,31 +257,29 @@ static int inet6_create(struct net *net, struct socket *sock, int protocol,
 		 */
 		inet->inet_sport = htons(inet->inet_num);
 		err = sk->sk_prot->hash(sk);
-		if (err) {
-			sk_common_release(sk);
-			goto out;
-		}
+		if (err)
+			goto out_sk_release;
 	}
 	if (sk->sk_prot->init) {
 		err = sk->sk_prot->init(sk);
-		if (err) {
-			sk_common_release(sk);
-			goto out;
-		}
+		if (err)
+			goto out_sk_release;
 	}
 
 	if (!kern) {
 		err = BPF_CGROUP_RUN_PROG_INET_SOCK(sk);
-		if (err) {
-			sk_common_release(sk);
-			goto out;
-		}
+		if (err)
+			goto out_sk_release;
 	}
 out:
 	return err;
 out_rcu_unlock:
 	rcu_read_unlock();
 	goto out;
+out_sk_release:
+	sk_common_release(sk);
+	sock->sk = NULL;
+	goto out;
 }
 
 static int __inet6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len,
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index ac746c1a26e136f83ff21c8d025f7bd75127541a..0d0602ef584af42b94bf3bb0679ffc689ff9583c 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -2647,10 +2647,10 @@ static void ip6_negative_advice(struct sock *sk,
 	if (rt->rt6i_flags & RTF_CACHE) {
 		rcu_read_lock();
 		if (rt6_check_expired(rt)) {
-			/* counteract the dst_release() in sk_dst_reset() */
-			dst_hold(dst);
+			/* rt/dst can not be destroyed yet,
+			 * because of rcu_read_lock()
+			 */
 			sk_dst_reset(sk);
-
 			rt6_remove_exception_rt(rt);
 		}
 		rcu_read_unlock();