18 files changed, 112 insertions, 49 deletions

diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index 8a96672e2c5c..eb404dc3ed6e 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -424,7 +424,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
 err2:
         br_fdb_delete_by_port(br, p, 1);
 err1:
-        kobject_del(&p->kobj);
+        kobject_put(&p->kobj);
 err0:
         dev_set_promiscuity(dev, -1);
 put_back:
diff --git a/net/can/bcm.c b/net/can/bcm.c
index 95d7f32643ae..72720c710351 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -75,6 +75,7 @@ static __initdata const char banner[] = KERN_INFO
 MODULE_DESCRIPTION("PF_CAN broadcast manager protocol");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_AUTHOR("Oliver Hartkopp <oliver.hartkopp@volkswagen.de>");
+MODULE_ALIAS("can-proto-2");
 
 /* easy access to can_frame payload */
 static inline u64 GET_U64(const struct can_frame *cp)
@@ -1469,6 +1470,9 @@ static int bcm_release(struct socket *sock)
                 bo->ifindex = 0;
         }
 
+        sock_orphan(sk);
+        sock->sk = NULL;
+
         release_sock(sk);
         sock_put(sk);
 
diff --git a/net/can/raw.c b/net/can/raw.c
index 6aa154e806ae..f4cc44548bda 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -62,6 +62,7 @@ static __initdata const char banner[] =
 MODULE_DESCRIPTION("PF_CAN raw protocol");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_AUTHOR("Urs Thuermann <urs.thuermann@volkswagen.de>");
+MODULE_ALIAS("can-proto-1");
 
 #define MASK_ALL 0
 
@@ -306,6 +307,9 @@ static int raw_release(struct socket *sock)
         ro->bound   = 0;
         ro->count   = 0;
 
+        sock_orphan(sk);
+        sock->sk = NULL;
+
         release_sock(sk);
         sock_put(sk);
 
diff --git a/net/core/sock.c b/net/core/sock.c
index ba5d2116aea1..bbb25be7ddfe 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -631,7 +631,7 @@ set_rcvbuf:
 
         case SO_TIMESTAMPING:
                 if (val & ~SOF_TIMESTAMPING_MASK) {
-                        ret = EINVAL;
+                        ret = -EINVAL;
                         break;
                 }
                 sock_valbool_flag(sk, SOCK_TIMESTAMPING_TX_HARDWARE,
@@ -919,13 +919,19 @@ static inline void sock_lock_init(struct sock *sk)
                         af_family_keys + sk->sk_family);
 }
 
+/*
+ * Copy all fields from osk to nsk but nsk->sk_refcnt must not change yet,
+ * even temporarly, because of RCU lookups. sk_node should also be left as is.
+ */
 static void sock_copy(struct sock *nsk, const struct sock *osk)
 {
 #ifdef CONFIG_SECURITY_NETWORK
         void *sptr = nsk->sk_security;
 #endif
-
-        memcpy(nsk, osk, osk->sk_prot->obj_size);
+        BUILD_BUG_ON(offsetof(struct sock, sk_copy_start) !=
+                     sizeof(osk->sk_node) + sizeof(osk->sk_refcnt));
+        memcpy(&nsk->sk_copy_start, &osk->sk_copy_start,
+               osk->sk_prot->obj_size - offsetof(struct sock, sk_copy_start));
 #ifdef CONFIG_SECURITY_NETWORK
         nsk->sk_security = sptr;
         security_sk_clone(osk, nsk);
@@ -1140,6 +1146,11 @@ struct sock *sk_clone(const struct sock *sk, const gfp_t priority)
 
                 newsk->sk_err      = 0;
                 newsk->sk_priority = 0;
+                /*
+                 * Before updating sk_refcnt, we must commit prior changes to memory
+                 * (Documentation/RCU/rculist_nulls.txt for details)
+                 */
+                smp_wmb();
                 atomic_set(&newsk->sk_refcnt, 2);
 
                 /*
@@ -1855,6 +1866,11 @@ void sock_init_data(struct socket *sock, struct sock *sk)
 
         sk->sk_stamp = ktime_set(-1L, 0);
 
+        /*
+         * Before updating sk_refcnt, we must commit prior changes to memory
+         * (Documentation/RCU/rculist_nulls.txt for details)
+         */
+        smp_wmb();
         atomic_set(&sk->sk_refcnt, 1);
         atomic_set(&sk->sk_wmem_alloc, 1);
         atomic_set(&sk->sk_drops, 0);
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 5a1ca2698c88..6d88219c5e22 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1160,6 +1160,7 @@ struct request_sock_ops tcp_request_sock_ops __read_mostly = {
 #ifdef CONFIG_TCP_MD5SIG
 static struct tcp_request_sock_ops tcp_request_sock_ipv4_ops = {
         .md5_lookup     =       tcp_v4_reqsk_md5_lookup,
+        .calc_md5_hash  =       tcp_v4_md5_hash_skb,
 };
 #endif
 
@@ -1373,7 +1374,7 @@ struct sock *tcp_v4_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
                  */
                 char *newkey = kmemdup(key->key, key->keylen, GFP_ATOMIC);
                 if (newkey != NULL)
-                        tcp_v4_md5_do_add(newsk, inet_sk(sk)->daddr,
+                        tcp_v4_md5_do_add(newsk, newinet->daddr,
                                           newkey, key->keylen);
                 newsk->sk_route_caps &= ~NETIF_F_GSO_MASK;
         }
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 5bdf08d312d9..bd62712848fa 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -2261,7 +2261,7 @@ struct sk_buff *tcp_make_synack(struct sock *sk, struct dst_entry *dst,
 #ifdef CONFIG_TCP_MD5SIG
         /* Okay, we have all we need - do the md5 hash if needed */
         if (md5) {
-                tp->af_specific->calc_md5_hash(md5_hash_location,
+                tcp_rsk(req)->af_specific->calc_md5_hash(md5_hash_location,
                                                md5, NULL, req, skb);
         }
 #endif
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 58810c65b635..d849dd53b788 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -896,6 +896,7 @@ struct request_sock_ops tcp6_request_sock_ops __read_mostly = {
 #ifdef CONFIG_TCP_MD5SIG
 static struct tcp_request_sock_ops tcp_request_sock_ipv6_ops = {
         .md5_lookup     =       tcp_v6_reqsk_md5_lookup,
+        .calc_md5_hash  =       tcp_v6_md5_hash_skb,
 };
 #endif
 
@@ -1441,7 +1442,7 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
                  */
                 char *newkey = kmemdup(key->key, key->keylen, GFP_ATOMIC);
                 if (newkey != NULL)
-                        tcp_v6_md5_do_add(newsk, &inet6_sk(sk)->daddr,
+                        tcp_v6_md5_do_add(newsk, &newnp->daddr,
                                           newkey, key->keylen);
         }
 #endif
diff --git a/net/irda/irttp.c b/net/irda/irttp.c
index ecf4eb2717cb..9cb79f95bf63 100644
--- a/net/irda/irttp.c
+++ b/net/irda/irttp.c
@@ -1453,6 +1453,7 @@ struct tsap_cb *irttp_dup(struct tsap_cb *orig, void *instance)
         }
         /* Dup */
         memcpy(new, orig, sizeof(struct tsap_cb));
+        spin_lock_init(&new->lock);
 
         /* We don't need the old instance any more */
         spin_unlock_irqrestore(&irttp->tsaps->hb_spinlock, flags);
diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
index ba2643a43c73..7836ee928983 100644
--- a/net/mac80211/Kconfig
+++ b/net/mac80211/Kconfig
@@ -83,6 +83,7 @@ endmenu
 config MAC80211_MESH
         bool "Enable mac80211 mesh networking (pre-802.11s) support"
         depends on MAC80211 && EXPERIMENTAL
+        depends on BROKEN
         ---help---
          This options enables support of Draft 802.11s mesh networking.
          The implementation is based on Draft 1.08 of the Mesh Networking
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index 3c72557df45a..479597e88583 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -175,6 +175,8 @@ int mesh_path_add(u8 *dst, struct ieee80211_sub_if_data *sdata)
         int err = 0;
         u32 hash_idx;
 
+        might_sleep();
+
         if (memcmp(dst, sdata->dev->dev_addr, ETH_ALEN) == 0)
                 /* never add ourselves as neighbours */
                 return -ENOTSUPP;
@@ -265,6 +267,7 @@ int mpp_path_add(u8 *dst, u8 *mpp, struct ieee80211_sub_if_data *sdata)
         int err = 0;
         u32 hash_idx;
 
+        might_sleep();
 
         if (memcmp(dst, sdata->dev->dev_addr, ETH_ALEN) == 0)
                 /* never add ourselves as neighbours */
@@ -491,8 +494,10 @@ void mesh_path_tx_pending(struct mesh_path *mpath)
  * @skb: frame to discard
  * @sdata: network subif the frame was to be sent through
  *
- * If the frame was beign forwarded from another MP, a PERR frame will be sent
- * to the precursor.
+ * If the frame was being forwarded from another MP, a PERR frame will be sent
+ * to the precursor.  The precursor's address (i.e. the previous hop) was saved
+ * in addr1 of the frame-to-be-forwarded, and would only be overwritten once
+ * the destination is successfully resolved.
  *
  * Locking: the function must me called within a rcu_read_lock region
  */
@@ -507,7 +512,7 @@ void mesh_path_discard_frame(struct sk_buff *skb,
                 u8 *ra, *da;
 
                 da = hdr->addr3;
-                ra = hdr->addr2;
+                ra = hdr->addr1;
                 mpath = mesh_path_lookup(da, sdata);
                 if (mpath)
                         dsn = ++mpath->dsn;
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index d238a8939a09..3a8922cd1038 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1455,7 +1455,7 @@ int ieee80211_master_start_xmit(struct sk_buff *skb, struct net_device *dev)
                 monitor_iface = UNKNOWN_ADDRESS;
 
                 len_rthdr = ieee80211_get_radiotap_len(skb->data);
-                hdr = (struct ieee80211_hdr *)skb->data + len_rthdr;
+                hdr = (struct ieee80211_hdr *)(skb->data + len_rthdr);
                 hdrlen = ieee80211_hdrlen(hdr->frame_control);
 
                 /* check the header is complete in the frame */
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 7508f11c5b39..b5869b9574b0 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -561,23 +561,38 @@ struct nf_conn *nf_conntrack_alloc(struct net *net,
                 }
         }
 
-        ct = kmem_cache_zalloc(nf_conntrack_cachep, gfp);
+        /*
+         * Do not use kmem_cache_zalloc(), as this cache uses
+         * SLAB_DESTROY_BY_RCU.
+         */
+        ct = kmem_cache_alloc(nf_conntrack_cachep, gfp);
         if (ct == NULL) {
                 pr_debug("nf_conntrack_alloc: Can't alloc conntrack.\n");
                 atomic_dec(&net->ct.count);
                 return ERR_PTR(-ENOMEM);
         }
-
+        /*
+         * Let ct->tuplehash[IP_CT_DIR_ORIGINAL].hnnode.next
+         * and ct->tuplehash[IP_CT_DIR_REPLY].hnnode.next unchanged.
+         */
+        memset(&ct->tuplehash[IP_CT_DIR_MAX], 0,
+               sizeof(*ct) - offsetof(struct nf_conn, tuplehash[IP_CT_DIR_MAX]));
         spin_lock_init(&ct->lock);
-        atomic_set(&ct->ct_general.use, 1);
         ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple = *orig;
+        ct->tuplehash[IP_CT_DIR_ORIGINAL].hnnode.pprev = NULL;
         ct->tuplehash[IP_CT_DIR_REPLY].tuple = *repl;
+        ct->tuplehash[IP_CT_DIR_REPLY].hnnode.pprev = NULL;
         /* Don't set timer yet: wait for confirmation */
         setup_timer(&ct->timeout, death_by_timeout, (unsigned long)ct);
 #ifdef CONFIG_NET_NS
         ct->ct_net = net;
 #endif
 
+        /*
+         * changes to lookup keys must be done before setting refcnt to 1
+         */
+        smp_wmb();
+        atomic_set(&ct->ct_general.use, 1);
         return ct;
 }
 EXPORT_SYMBOL_GPL(nf_conntrack_alloc);
diff --git a/net/netfilter/xt_osf.c b/net/netfilter/xt_osf.c
index 863e40977a4d..0f482e2440b4 100644
--- a/net/netfilter/xt_osf.c
+++ b/net/netfilter/xt_osf.c
@@ -330,7 +330,8 @@ static bool xt_osf_match_packet(const struct sk_buff *skb,
                         fcount++;
 
                         if (info->flags & XT_OSF_LOG)
-                                nf_log_packet(p->hooknum, 0, skb, p->in, p->out, NULL,
+                                nf_log_packet(p->family, p->hooknum, skb,
+                                        p->in, p->out, NULL,
                                         "%s [%s:%s] : %pi4:%d -> %pi4:%d hops=%d\n",
                                         f->genre, f->version, f->subtype,
                                         &ip->saddr, ntohs(tcp->source),
@@ -345,7 +346,7 @@ static bool xt_osf_match_packet(const struct sk_buff *skb,
         rcu_read_unlock();
 
         if (!fcount && (info->flags & XT_OSF_LOG))
-                nf_log_packet(p->hooknum, 0, skb, p->in, p->out, NULL,
+                nf_log_packet(p->family, p->hooknum, skb, p->in, p->out, NULL,
                         "Remote OS is not known: %pi4:%u -> %pi4:%u\n",
                                 &ip->saddr, ntohs(tcp->source),
                                 &ip->daddr, ntohs(tcp->dest));
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index 79693fe2001e..2fc4a1724eb8 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -549,6 +549,10 @@ void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw)
         swprev = !!(rfkill->state & RFKILL_BLOCK_SW);
         hwprev = !!(rfkill->state & RFKILL_BLOCK_HW);
         __rfkill_set_sw_state(rfkill, sw);
+        if (hw)
+                rfkill->state |= RFKILL_BLOCK_HW;
+        else
+                rfkill->state &= ~RFKILL_BLOCK_HW;
 
         spin_unlock_irqrestore(&rfkill->lock, flags);
 
@@ -648,15 +652,26 @@ static ssize_t rfkill_state_store(struct device *dev,
                                   struct device_attribute *attr,
                                   const char *buf, size_t count)
 {
-        /*
-         * The intention was that userspace can only take control over
-         * a given device when/if rfkill-input doesn't control it due
-         * to user_claim. Since user_claim is currently unsupported,
-         * we never support changing the state from userspace -- this
-         * can be implemented again later.
-         */
+        struct rfkill *rfkill = to_rfkill(dev);
+        unsigned long state;
+        int err;
+
+        if (!capable(CAP_NET_ADMIN))
+                return -EPERM;
+
+        err = strict_strtoul(buf, 0, &state);
+        if (err)
+                return err;
+
+        if (state != RFKILL_USER_STATE_SOFT_BLOCKED &&
+            state != RFKILL_USER_STATE_UNBLOCKED)
+                return -EINVAL;
+
+        mutex_lock(&rfkill_global_mutex);
+        rfkill_set_block(rfkill, state == RFKILL_USER_STATE_SOFT_BLOCKED);
+        mutex_unlock(&rfkill_global_mutex);
 
-        return -EPERM;
+        return err ?: count;
 }
 
 static ssize_t rfkill_claim_show(struct device *dev,
diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index 6bd8e93869ed..f0a76f6bca71 100644
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -92,23 +92,21 @@ static void rose_set_lockdep_key(struct net_device *dev)
 /*
  *      Convert a ROSE address into text.
  */
-const char *rose2asc(const rose_address *addr)
+char *rose2asc(char *buf, const rose_address *addr)
 {
-        static char buffer[11];
-
         if (addr->rose_addr[0] == 0x00 && addr->rose_addr[1] == 0x00 &&
             addr->rose_addr[2] == 0x00 && addr->rose_addr[3] == 0x00 &&
             addr->rose_addr[4] == 0x00) {
-                strcpy(buffer, "*");
+                strcpy(buf, "*");
         } else {
-                sprintf(buffer, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF,
+                sprintf(buf, "%02X%02X%02X%02X%02X", addr->rose_addr[0] & 0xFF,
                                                 addr->rose_addr[1] & 0xFF,
                                                 addr->rose_addr[2] & 0xFF,
                                                 addr->rose_addr[3] & 0xFF,
                                                 addr->rose_addr[4] & 0xFF);
         }
 
-        return buffer;
+        return buf;
 }
 
 /*
@@ -1437,7 +1435,7 @@ static void rose_info_stop(struct seq_file *seq, void *v)
 
 static int rose_info_show(struct seq_file *seq, void *v)
 {
-        char buf[11];
+        char buf[11], rsbuf[11];
 
         if (v == SEQ_START_TOKEN)
                 seq_puts(seq,
@@ -1455,8 +1453,8 @@ static int rose_info_show(struct seq_file *seq, void *v)
                         devname = dev->name;
 
                 seq_printf(seq, "%-10s %-9s ",
-                        rose2asc(&rose->dest_addr),
-                        ax2asc(buf, &rose->dest_call));
+                           rose2asc(rsbuf, &rose->dest_addr),
+                           ax2asc(buf, &rose->dest_call));
 
                 if (ax25cmp(&rose->source_call, &null_ax25_address) == 0)
                         callsign = "??????-?";
@@ -1465,7 +1463,7 @@ static int rose_info_show(struct seq_file *seq, void *v)
 
                 seq_printf(seq,
                            "%-10s %-9s %-5s %3.3X %05d  %d  %d  %d  %d %3lu %3lu %3lu %3lu %3lu %3lu/%03lu %5d %5d %ld\n",
-                        rose2asc(&rose->source_addr),
+                        rose2asc(rsbuf, &rose->source_addr),
                         callsign,
                         devname,
                         rose->lci & 0x0FFF,
diff --git a/net/rose/rose_route.c b/net/rose/rose_route.c
index a81066a1010a..9478d9b3d977 100644
--- a/net/rose/rose_route.c
+++ b/net/rose/rose_route.c
@@ -1104,6 +1104,7 @@ static void rose_node_stop(struct seq_file *seq, void *v)
 
 static int rose_node_show(struct seq_file *seq, void *v)
 {
+        char rsbuf[11];
         int i;
 
         if (v == SEQ_START_TOKEN)
@@ -1112,13 +1113,13 @@ static int rose_node_show(struct seq_file *seq, void *v)
                 const struct rose_node *rose_node = v;
                 /* if (rose_node->loopback) {
                         seq_printf(seq, "%-10s %04d 1 loopback\n",
-                                rose2asc(&rose_node->address),
-                                rose_node->mask);
+                                   rose2asc(rsbuf, &rose_node->address),
+                                   rose_node->mask);
                 } else { */
                         seq_printf(seq, "%-10s %04d %d",
-                                rose2asc(&rose_node->address),
-                                rose_node->mask,
-                                rose_node->count);
+                                   rose2asc(rsbuf, &rose_node->address),
+                                   rose_node->mask,
+                                   rose_node->count);
 
                         for (i = 0; i < rose_node->count; i++)
                                 seq_printf(seq, " %05d",
@@ -1267,7 +1268,7 @@ static void rose_route_stop(struct seq_file *seq, void *v)
 
 static int rose_route_show(struct seq_file *seq, void *v)
 {
-        char buf[11];
+        char buf[11], rsbuf[11];
 
         if (v == SEQ_START_TOKEN)
                 seq_puts(seq,
@@ -1279,7 +1280,7 @@ static int rose_route_show(struct seq_file *seq, void *v)
                         seq_printf(seq,
                                    "%3.3X  %-10s  %-9s  %05d      ",
                                    rose_route->lci1,
-                                   rose2asc(&rose_route->src_addr),
+                                   rose2asc(rsbuf, &rose_route->src_addr),
                                    ax2asc(buf, &rose_route->src_call),
                                    rose_route->neigh1->number);
                 else
@@ -1289,10 +1290,10 @@ static int rose_route_show(struct seq_file *seq, void *v)
                 if (rose_route->neigh2)
                         seq_printf(seq,
                                    "%3.3X  %-10s  %-9s  %05d\n",
-                                rose_route->lci2,
-                                rose2asc(&rose_route->dest_addr),
-                                ax2asc(buf, &rose_route->dest_call),
-                                rose_route->neigh2->number);
+                                   rose_route->lci2,
+                                   rose2asc(rsbuf, &rose_route->dest_addr),
+                                   ax2asc(buf, &rose_route->dest_call),
+                                   rose_route->neigh2->number);
                  else
                          seq_puts(seq,
                                   "000  *           *          00000\n");
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 43bdb1372cae..634496b3ed77 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -997,7 +997,7 @@ static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
 
         if (IS_ERR(hdr)) {
                 err = PTR_ERR(hdr);
-                goto out;
+                goto free_msg;
         }
 
         cookie.msg = msg;
@@ -1011,7 +1011,7 @@ static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
                                 &cookie, get_key_callback);
 
         if (err)
-                goto out;
+                goto free_msg;
 
         if (cookie.error)
                 goto nla_put_failure;
@@ -1022,6 +1022,7 @@ static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
 
  nla_put_failure:
         err = -ENOBUFS;
+ free_msg:
         nlmsg_free(msg);
  out:
         cfg80211_put_dev(drv);
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index f8e71b300001..9271118e1fc4 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -35,8 +35,6 @@ void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted)
         else
                 nl80211_send_scan_done(wiphy_to_dev(request->wiphy), dev);
 
-        wiphy_to_dev(request->wiphy)->scan_req = NULL;
-
 #ifdef CONFIG_WIRELESS_EXT
         if (!aborted) {
                 memset(&wrqu, 0, sizeof(wrqu));
@@ -48,6 +46,7 @@ void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted)
         dev_put(dev);
 
  out:
+        wiphy_to_dev(request->wiphy)->scan_req = NULL;
         kfree(request);
 }
 EXPORT_SYMBOL(cfg80211_scan_done);