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-rw-r--r--net/8021q/vlan_core.c46
-rw-r--r--net/9p/client.c59
-rw-r--r--net/9p/trans_rdma.c5
-rw-r--r--net/core/dev.c3
-rw-r--r--net/core/scm.c24
-rw-r--r--net/ipv4/tcp.c3
-rw-r--r--net/ipv4/xfrm4_state.c1
-rw-r--r--net/ipv6/addrconf.c4
-rw-r--r--net/ipv6/udp.c28
-rw-r--r--net/ipv6/xfrm6_state.c1
-rw-r--r--net/netfilter/nf_conntrack_helper.c3
-rw-r--r--net/netfilter/nf_conntrack_proto.c5
-rw-r--r--net/rfkill/rfkill.c2
-rw-r--r--net/unix/af_unix.c31
-rw-r--r--net/unix/garbage.c49
-rw-r--r--net/xfrm/xfrm_policy.c4
-rw-r--r--net/xfrm/xfrm_user.c2
17 files changed, 194 insertions, 76 deletions
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index 916061f681b..68ced4bf158 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -3,11 +3,20 @@
#include <linux/if_vlan.h>
#include "vlan.h"
+struct vlan_hwaccel_cb {
+ struct net_device *dev;
+};
+
+static inline struct vlan_hwaccel_cb *vlan_hwaccel_cb(struct sk_buff *skb)
+{
+ return (struct vlan_hwaccel_cb *)skb->cb;
+}
+
/* VLAN rx hw acceleration helper. This acts like netif_{rx,receive_skb}(). */
int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
u16 vlan_tci, int polling)
{
- struct net_device_stats *stats;
+ struct vlan_hwaccel_cb *cb = vlan_hwaccel_cb(skb);
if (skb_bond_should_drop(skb)) {
dev_kfree_skb_any(skb);
@@ -15,23 +24,35 @@ int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
}
skb->vlan_tci = vlan_tci;
+ cb->dev = vlan_group_get_device(grp, vlan_tci & VLAN_VID_MASK);
+
+ return (polling ? netif_receive_skb(skb) : netif_rx(skb));
+}
+EXPORT_SYMBOL(__vlan_hwaccel_rx);
+
+int vlan_hwaccel_do_receive(struct sk_buff *skb)
+{
+ struct vlan_hwaccel_cb *cb = vlan_hwaccel_cb(skb);
+ struct net_device *dev = cb->dev;
+ struct net_device_stats *stats;
+
netif_nit_deliver(skb);
- skb->dev = vlan_group_get_device(grp, vlan_tci & VLAN_VID_MASK);
- if (skb->dev == NULL) {
- dev_kfree_skb_any(skb);
- /* Not NET_RX_DROP, this is not being dropped
- * due to congestion. */
- return NET_RX_SUCCESS;
+ if (dev == NULL) {
+ kfree_skb(skb);
+ return -1;
}
- skb->dev->last_rx = jiffies;
+
+ skb->dev = dev;
+ skb->priority = vlan_get_ingress_priority(dev, skb->vlan_tci);
skb->vlan_tci = 0;
- stats = &skb->dev->stats;
+ dev->last_rx = jiffies;
+
+ stats = &dev->stats;
stats->rx_packets++;
stats->rx_bytes += skb->len;
- skb->priority = vlan_get_ingress_priority(skb->dev, vlan_tci);
switch (skb->pkt_type) {
case PACKET_BROADCAST:
break;
@@ -43,13 +64,12 @@ int __vlan_hwaccel_rx(struct sk_buff *skb, struct vlan_group *grp,
* This allows the VLAN to have a different MAC than the
* underlying device, and still route correctly. */
if (!compare_ether_addr(eth_hdr(skb)->h_dest,
- skb->dev->dev_addr))
+ dev->dev_addr))
skb->pkt_type = PACKET_HOST;
break;
};
- return (polling ? netif_receive_skb(skb) : netif_rx(skb));
+ return 0;
}
-EXPORT_SYMBOL(__vlan_hwaccel_rx);
struct net_device *vlan_dev_real_dev(const struct net_device *dev)
{
diff --git a/net/9p/client.c b/net/9p/client.c
index 67717f69412..4b529454616 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -189,6 +189,9 @@ static struct p9_req_t *p9_tag_alloc(struct p9_client *c, u16 tag)
printk(KERN_ERR "Couldn't grow tag array\n");
kfree(req->tc);
kfree(req->rc);
+ kfree(req->wq);
+ req->tc = req->rc = NULL;
+ req->wq = NULL;
return ERR_PTR(-ENOMEM);
}
req->tc->sdata = (char *) req->tc + sizeof(struct p9_fcall);
@@ -311,12 +314,6 @@ static void p9_free_req(struct p9_client *c, struct p9_req_t *r)
r->status = REQ_STATUS_IDLE;
if (tag != P9_NOTAG && p9_idpool_check(tag, c->tagpool))
p9_idpool_put(tag, c->tagpool);
-
- /* if this was a flush request we have to free response fcall */
- if (r->rc->id == P9_RFLUSH) {
- kfree(r->tc);
- kfree(r->rc);
- }
}
/**
@@ -611,19 +608,21 @@ reterr:
static struct p9_fid *p9_fid_create(struct p9_client *clnt)
{
- int err;
+ int ret;
struct p9_fid *fid;
+ unsigned long flags;
P9_DPRINTK(P9_DEBUG_FID, "clnt %p\n", clnt);
fid = kmalloc(sizeof(struct p9_fid), GFP_KERNEL);
if (!fid)
return ERR_PTR(-ENOMEM);
- fid->fid = p9_idpool_get(clnt->fidpool);
+ ret = p9_idpool_get(clnt->fidpool);
if (fid->fid < 0) {
- err = -ENOSPC;
+ ret = -ENOSPC;
goto error;
}
+ fid->fid = ret;
memset(&fid->qid, 0, sizeof(struct p9_qid));
fid->mode = -1;
@@ -632,27 +631,28 @@ static struct p9_fid *p9_fid_create(struct p9_client *clnt)
fid->clnt = clnt;
fid->aux = NULL;
- spin_lock(&clnt->lock);
+ spin_lock_irqsave(&clnt->lock, flags);
list_add(&fid->flist, &clnt->fidlist);
- spin_unlock(&clnt->lock);
+ spin_unlock_irqrestore(&clnt->lock, flags);
return fid;
error:
kfree(fid);
- return ERR_PTR(err);
+ return ERR_PTR(ret);
}
static void p9_fid_destroy(struct p9_fid *fid)
{
struct p9_client *clnt;
+ unsigned long flags;
P9_DPRINTK(P9_DEBUG_FID, "fid %d\n", fid->fid);
clnt = fid->clnt;
p9_idpool_put(fid->fid, clnt->fidpool);
- spin_lock(&clnt->lock);
+ spin_lock_irqsave(&clnt->lock, flags);
list_del(&fid->flist);
- spin_unlock(&clnt->lock);
+ spin_unlock_irqrestore(&clnt->lock, flags);
kfree(fid);
}
@@ -818,7 +818,9 @@ struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
}
P9_DPRINTK(P9_DEBUG_9P, "<<< RATTACH qid %x.%llx.%x\n",
- qid.type, qid.path, qid.version);
+ qid.type,
+ (unsigned long long)qid.path,
+ qid.version);
memmove(&fid->qid, &qid, sizeof(struct p9_qid));
@@ -865,7 +867,9 @@ p9_client_auth(struct p9_client *clnt, char *uname, u32 n_uname, char *aname)
}
P9_DPRINTK(P9_DEBUG_9P, "<<< RAUTH qid %x.%llx.%x\n",
- qid.type, qid.path, qid.version);
+ qid.type,
+ (unsigned long long)qid.path,
+ qid.version);
memmove(&afid->qid, &qid, sizeof(struct p9_qid));
p9_free_req(clnt, req);
@@ -930,7 +934,8 @@ struct p9_fid *p9_client_walk(struct p9_fid *oldfid, int nwname, char **wnames,
for (count = 0; count < nwqids; count++)
P9_DPRINTK(P9_DEBUG_9P, "<<< [%d] %x.%llx.%x\n",
- count, wqids[count].type, wqids[count].path,
+ count, wqids[count].type,
+ (unsigned long long)wqids[count].path,
wqids[count].version);
if (nwname)
@@ -980,7 +985,9 @@ int p9_client_open(struct p9_fid *fid, int mode)
}
P9_DPRINTK(P9_DEBUG_9P, "<<< ROPEN qid %x.%llx.%x iounit %x\n",
- qid.type, qid.path, qid.version, iounit);
+ qid.type,
+ (unsigned long long)qid.path,
+ qid.version, iounit);
fid->mode = mode;
fid->iounit = iounit;
@@ -1023,7 +1030,9 @@ int p9_client_fcreate(struct p9_fid *fid, char *name, u32 perm, int mode,
}
P9_DPRINTK(P9_DEBUG_9P, "<<< RCREATE qid %x.%llx.%x iounit %x\n",
- qid.type, qid.path, qid.version, iounit);
+ qid.type,
+ (unsigned long long)qid.path,
+ qid.version, iounit);
fid->mode = mode;
fid->iounit = iounit;
@@ -1230,9 +1239,9 @@ struct p9_wstat *p9_client_stat(struct p9_fid *fid)
"<<< name=%s uid=%s gid=%s muid=%s extension=(%s)\n"
"<<< uid=%d gid=%d n_muid=%d\n",
ret->size, ret->type, ret->dev, ret->qid.type,
- ret->qid.path, ret->qid.version, ret->mode,
- ret->atime, ret->mtime, ret->length, ret->name,
- ret->uid, ret->gid, ret->muid, ret->extension,
+ (unsigned long long)ret->qid.path, ret->qid.version, ret->mode,
+ ret->atime, ret->mtime, (unsigned long long)ret->length,
+ ret->name, ret->uid, ret->gid, ret->muid, ret->extension,
ret->n_uid, ret->n_gid, ret->n_muid);
free_and_error:
@@ -1255,9 +1264,9 @@ int p9_client_wstat(struct p9_fid *fid, struct p9_wstat *wst)
" name=%s uid=%s gid=%s muid=%s extension=(%s)\n"
" uid=%d gid=%d n_muid=%d\n",
wst->size, wst->type, wst->dev, wst->qid.type,
- wst->qid.path, wst->qid.version, wst->mode,
- wst->atime, wst->mtime, wst->length, wst->name,
- wst->uid, wst->gid, wst->muid, wst->extension,
+ (unsigned long long)wst->qid.path, wst->qid.version, wst->mode,
+ wst->atime, wst->mtime, (unsigned long long)wst->length,
+ wst->name, wst->uid, wst->gid, wst->muid, wst->extension,
wst->n_uid, wst->n_gid, wst->n_muid);
err = 0;
clnt = fid->clnt;
diff --git a/net/9p/trans_rdma.c b/net/9p/trans_rdma.c
index 8d6cc4777aa..2f1fe5fc122 100644
--- a/net/9p/trans_rdma.c
+++ b/net/9p/trans_rdma.c
@@ -45,7 +45,6 @@
#include <net/9p/transport.h>
#include <rdma/ib_verbs.h>
#include <rdma/rdma_cm.h>
-#include <rdma/ib_verbs.h>
#define P9_PORT 5640
#define P9_RDMA_SQ_DEPTH 32
@@ -589,6 +588,9 @@ rdma_create_trans(struct p9_client *client, const char *addr, char *args)
if (IS_ERR(rdma->cm_id))
goto error;
+ /* Associate the client with the transport */
+ client->trans = rdma;
+
/* Resolve the server's address */
rdma->addr.sin_family = AF_INET;
rdma->addr.sin_addr.s_addr = in_aton(addr);
@@ -669,7 +671,6 @@ rdma_create_trans(struct p9_client *client, const char *addr, char *args)
if (err || (rdma->state != P9_RDMA_CONNECTED))
goto error;
- client->trans = rdma;
client->status = Connected;
return 0;
diff --git a/net/core/dev.c b/net/core/dev.c
index d9038e328cc..9174c77d311 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2218,6 +2218,9 @@ int netif_receive_skb(struct sk_buff *skb)
int ret = NET_RX_DROP;
__be16 type;
+ if (skb->vlan_tci && vlan_hwaccel_do_receive(skb))
+ return NET_RX_SUCCESS;
+
/* if we've gotten here through NAPI, check netpoll */
if (netpoll_receive_skb(skb))
return NET_RX_DROP;
diff --git a/net/core/scm.c b/net/core/scm.c
index 10f5c65f6a4..ab242cc1acc 100644
--- a/net/core/scm.c
+++ b/net/core/scm.c
@@ -75,6 +75,7 @@ static int scm_fp_copy(struct cmsghdr *cmsg, struct scm_fp_list **fplp)
if (!fpl)
return -ENOMEM;
*fplp = fpl;
+ INIT_LIST_HEAD(&fpl->list);
fpl->count = 0;
}
fpp = &fpl->fp[fpl->count];
@@ -106,9 +107,25 @@ void __scm_destroy(struct scm_cookie *scm)
if (fpl) {
scm->fp = NULL;
- for (i=fpl->count-1; i>=0; i--)
- fput(fpl->fp[i]);
- kfree(fpl);
+ if (current->scm_work_list) {
+ list_add_tail(&fpl->list, current->scm_work_list);
+ } else {
+ LIST_HEAD(work_list);
+
+ current->scm_work_list = &work_list;
+
+ list_add(&fpl->list, &work_list);
+ while (!list_empty(&work_list)) {
+ fpl = list_first_entry(&work_list, struct scm_fp_list, list);
+
+ list_del(&fpl->list);
+ for (i=fpl->count-1; i>=0; i--)
+ fput(fpl->fp[i]);
+ kfree(fpl);
+ }
+
+ current->scm_work_list = NULL;
+ }
}
}
@@ -284,6 +301,7 @@ struct scm_fp_list *scm_fp_dup(struct scm_fp_list *fpl)
new_fpl = kmalloc(sizeof(*fpl), GFP_KERNEL);
if (new_fpl) {
+ INIT_LIST_HEAD(&new_fpl->list);
for (i=fpl->count-1; i>=0; i--)
get_file(fpl->fp[i]);
memcpy(new_fpl, fpl, sizeof(*fpl));
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index eccb7165a80..c5aca0bb116 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1374,8 +1374,7 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
sk->sk_state == TCP_CLOSE ||
(sk->sk_shutdown & RCV_SHUTDOWN) ||
!timeo ||
- signal_pending(current) ||
- (flags & MSG_PEEK))
+ signal_pending(current))
break;
} else {
if (sock_flag(sk, SOCK_DONE))
diff --git a/net/ipv4/xfrm4_state.c b/net/ipv4/xfrm4_state.c
index 07735ed280d..55dc6beab9a 100644
--- a/net/ipv4/xfrm4_state.c
+++ b/net/ipv4/xfrm4_state.c
@@ -33,6 +33,7 @@ __xfrm4_init_tempsel(struct xfrm_state *x, struct flowi *fl,
x->sel.dport_mask = htons(0xffff);
x->sel.sport = xfrm_flowi_sport(fl);
x->sel.sport_mask = htons(0xffff);
+ x->sel.family = AF_INET;
x->sel.prefixlen_d = 32;
x->sel.prefixlen_s = 32;
x->sel.proto = fl->proto;
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index eea9542728c..d9da5eb9dcb 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2483,8 +2483,10 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
if (!idev && dev->mtu >= IPV6_MIN_MTU)
idev = ipv6_add_dev(dev);
- if (idev)
+ if (idev) {
idev->if_flags |= IF_READY;
+ run_pending = 1;
+ }
} else {
if (!addrconf_qdisc_ok(dev)) {
/* device is still not ready. */
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 71e259e866a..8b48512ebf6 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -138,6 +138,7 @@ int udpv6_recvmsg(struct kiocb *iocb, struct sock *sk,
int peeked;
int err;
int is_udplite = IS_UDPLITE(sk);
+ int is_udp4;
if (addr_len)
*addr_len=sizeof(struct sockaddr_in6);
@@ -158,6 +159,8 @@ try_again:
else if (copied < ulen)
msg->msg_flags |= MSG_TRUNC;
+ is_udp4 = (skb->protocol == htons(ETH_P_IP));
+
/*
* If checksum is needed at all, try to do it while copying the
* data. If the data is truncated, or if we only want a partial
@@ -180,9 +183,14 @@ try_again:
if (err)
goto out_free;
- if (!peeked)
- UDP6_INC_STATS_USER(sock_net(sk),
- UDP_MIB_INDATAGRAMS, is_udplite);
+ if (!peeked) {
+ if (is_udp4)
+ UDP_INC_STATS_USER(sock_net(sk),
+ UDP_MIB_INDATAGRAMS, is_udplite);
+ else
+ UDP6_INC_STATS_USER(sock_net(sk),
+ UDP_MIB_INDATAGRAMS, is_udplite);
+ }
sock_recv_timestamp(msg, sk, skb);
@@ -196,7 +204,7 @@ try_again:
sin6->sin6_flowinfo = 0;
sin6->sin6_scope_id = 0;
- if (skb->protocol == htons(ETH_P_IP))
+ if (is_udp4)
ipv6_addr_set(&sin6->sin6_addr, 0, 0,
htonl(0xffff), ip_hdr(skb)->saddr);
else {
@@ -207,7 +215,7 @@ try_again:
}
}
- if (skb->protocol == htons(ETH_P_IP)) {
+ if (is_udp4) {
if (inet->cmsg_flags)
ip_cmsg_recv(msg, skb);
} else {
@@ -228,8 +236,14 @@ out:
csum_copy_err:
lock_sock(sk);
- if (!skb_kill_datagram(sk, skb, flags))
- UDP6_INC_STATS_USER(sock_net(sk), UDP_MIB_INERRORS, is_udplite);
+ if (!skb_kill_datagram(sk, skb, flags)) {
+ if (is_udp4)
+ UDP_INC_STATS_USER(sock_net(sk),
+ UDP_MIB_INERRORS, is_udplite);
+ else
+ UDP6_INC_STATS_USER(sock_net(sk),
+ UDP_MIB_INERRORS, is_udplite);
+ }
release_sock(sk);
if (flags & MSG_DONTWAIT)
diff --git a/net/ipv6/xfrm6_state.c b/net/ipv6/xfrm6_state.c
index 89884a4f23a..60c78cfc273 100644
--- a/net/ipv6/xfrm6_state.c
+++ b/net/ipv6/xfrm6_state.c
@@ -34,6 +34,7 @@ __xfrm6_init_tempsel(struct xfrm_state *x, struct flowi *fl,
x->sel.dport_mask = htons(0xffff);
x->sel.sport = xfrm_flowi_sport(fl);
x->sel.sport_mask = htons(0xffff);
+ x->sel.family = AF_INET6;
x->sel.prefixlen_d = 128;
x->sel.prefixlen_s = 128;
x->sel.proto = fl->proto;
diff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c
index 9c06b9f86ad..c39b6a99413 100644
--- a/net/netfilter/nf_conntrack_helper.c
+++ b/net/netfilter/nf_conntrack_helper.c
@@ -21,6 +21,7 @@
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/rculist.h>
+#include <linux/rtnetlink.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_l3proto.h>
@@ -167,10 +168,12 @@ void nf_conntrack_helper_unregister(struct nf_conntrack_helper *me)
*/
synchronize_rcu();
+ rtnl_lock();
spin_lock_bh(&nf_conntrack_lock);
for_each_net(net)
__nf_conntrack_helper_unregister(me, net);
spin_unlock_bh(&nf_conntrack_lock);
+ rtnl_unlock();
}
EXPORT_SYMBOL_GPL(nf_conntrack_helper_unregister);
diff --git a/net/netfilter/nf_conntrack_proto.c b/net/netfilter/nf_conntrack_proto.c
index a59a307e685..592d73344d4 100644
--- a/net/netfilter/nf_conntrack_proto.c
+++ b/net/netfilter/nf_conntrack_proto.c
@@ -22,6 +22,7 @@
#include <linux/notifier.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>
+#include <linux/rtnetlink.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_l3proto.h>
@@ -221,8 +222,10 @@ void nf_conntrack_l3proto_unregister(struct nf_conntrack_l3proto *proto)
synchronize_rcu();
/* Remove all contrack entries for this protocol */
+ rtnl_lock();
for_each_net(net)
nf_ct_iterate_cleanup(net, kill_l3proto, proto);
+ rtnl_unlock();
}
EXPORT_SYMBOL_GPL(nf_conntrack_l3proto_unregister);
@@ -333,8 +336,10 @@ void nf_conntrack_l4proto_unregister(struct nf_conntrack_l4proto *l4proto)
synchronize_rcu();
/* Remove all contrack entries for this protocol */
+ rtnl_lock();
for_each_net(net)
nf_ct_iterate_cleanup(net, kill_l4proto, l4proto);
+ rtnl_unlock();
}
EXPORT_SYMBOL_GPL(nf_conntrack_l4proto_unregister);
diff --git a/net/rfkill/rfkill.c b/net/rfkill/rfkill.c
index f949a482b00..25ba3bd57e6 100644
--- a/net/rfkill/rfkill.c
+++ b/net/rfkill/rfkill.c
@@ -603,7 +603,7 @@ static int rfkill_check_duplicity(const struct rfkill *rfkill)
}
/* 0: first switch of its kind */
- return test_bit(rfkill->type, seen);
+ return (test_bit(rfkill->type, seen)) ? 1 : 0;
}
static int rfkill_add_switch(struct rfkill *rfkill)
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 4d3c6071b9a..eb90f77bb0e 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -1302,14 +1302,23 @@ static void unix_destruct_fds(struct sk_buff *skb)
sock_wfree(skb);
}
-static void unix_attach_fds(struct scm_cookie *scm, struct sk_buff *skb)
+static int unix_attach_fds(struct scm_cookie *scm, struct sk_buff *skb)
{
int i;
+
+ /*
+ * Need to duplicate file references for the sake of garbage
+ * collection. Otherwise a socket in the fps might become a
+ * candidate for GC while the skb is not yet queued.
+ */
+ UNIXCB(skb).fp = scm_fp_dup(scm->fp);
+ if (!UNIXCB(skb).fp)
+ return -ENOMEM;
+
for (i=scm->fp->count-1; i>=0; i--)
unix_inflight(scm->fp->fp[i]);
- UNIXCB(skb).fp = scm->fp;
skb->destructor = unix_destruct_fds;
- scm->fp = NULL;
+ return 0;
}
/*
@@ -1368,8 +1377,11 @@ static int unix_dgram_sendmsg(struct kiocb *kiocb, struct socket *sock,
goto out;
memcpy(UNIXCREDS(skb), &siocb->scm->creds, sizeof(struct ucred));
- if (siocb->scm->fp)
- unix_attach_fds(siocb->scm, skb);
+ if (siocb->scm->fp) {
+ err = unix_attach_fds(siocb->scm, skb);
+ if (err)
+ goto out_free;
+ }
unix_get_secdata(siocb->scm, skb);
skb_reset_transport_header(skb);
@@ -1538,8 +1550,13 @@ static int unix_stream_sendmsg(struct kiocb *kiocb, struct socket *sock,
size = min_t(int, size, skb_tailroom(skb));
memcpy(UNIXCREDS(skb), &siocb->scm->creds, sizeof(struct ucred));
- if (siocb->scm->fp)
- unix_attach_fds(siocb->scm, skb);
+ if (siocb->scm->fp) {
+ err = unix_attach_fds(siocb->scm, skb);
+ if (err) {
+ kfree_skb(skb);
+ goto out_err;
+ }
+ }
if ((err = memcpy_fromiovec(skb_put(skb,size), msg->msg_iov, size)) != 0) {
kfree_skb(skb);
diff --git a/net/unix/garbage.c b/net/unix/garbage.c
index 2a27b84f740..6d4a9a8de5e 100644
--- a/net/unix/garbage.c
+++ b/net/unix/garbage.c
@@ -186,8 +186,17 @@ static void scan_inflight(struct sock *x, void (*func)(struct unix_sock *),
*/
struct sock *sk = unix_get_socket(*fp++);
if (sk) {
- hit = true;
- func(unix_sk(sk));
+ struct unix_sock *u = unix_sk(sk);
+
+ /*
+ * Ignore non-candidates, they could
+ * have been added to the queues after
+ * starting the garbage collection
+ */
+ if (u->gc_candidate) {
+ hit = true;
+ func(u);
+ }
}
}
if (hit && hitlist != NULL) {
@@ -249,11 +258,11 @@ static void inc_inflight_move_tail(struct unix_sock *u)
{
atomic_long_inc(&u->inflight);
/*
- * If this is still a candidate, move it to the end of the
- * list, so that it's checked even if it was already passed
- * over
+ * If this still might be part of a cycle, move it to the end
+ * of the list, so that it's checked even if it was already
+ * passed over
*/
- if (u->gc_candidate)
+ if (u->gc_maybe_cycle)
list_move_tail(&u->link, &gc_candidates);
}
@@ -267,6 +276,7 @@ void unix_gc(void)
struct unix_sock *next;
struct sk_buff_head hitlist;
struct list_head cursor;
+ LIST_HEAD(not_cycle_list);
spin_lock(&unix_gc_lock);
@@ -282,10 +292,14 @@ void unix_gc(void)
*
* Holding unix_gc_lock will protect these candidates from
* being detached, and hence from gaining an external
- * reference. This also means, that since there are no
- * possible receivers, the receive queues of these sockets are
- * static during the GC, even though the dequeue is done
- * before the detach without atomicity guarantees.
+ * reference. Since there are no possible receivers, all
+ * buffers currently on the candidates' queues stay there
+ * during the garbage collection.
+ *
+ * We also know that no new candidate can be added onto the
+ * receive queues. Other, non candidate sockets _can_ be
+ * added to queue, so we must make sure only to touch
+ * candidates.
*/
list_for_each_entry_safe(u, next, &gc_inflight_list, link) {
long total_refs;
@@ -299,6 +313,7 @@ void unix_gc(void)
if (total_refs == inflight_refs) {
list_move_tail(&u->link, &gc_candidates);
u->gc_candidate = 1;
+ u->gc_maybe_cycle = 1;
}
}
@@ -325,14 +340,24 @@ void unix_gc(void)
list_move(&cursor, &u->link);
if (atomic_long_read(&u->inflight) > 0) {
- list_move_tail(&u->link, &gc_inflight_list);
- u->gc_candidate = 0;
+ list_move_tail(&u->link, &not_cycle_list);
+ u->gc_maybe_cycle = 0;
scan_children(&u->sk, inc_inflight_move_tail, NULL);
}
}
list_del(&cursor);
/*
+ * not_cycle_list contains those sockets which do not make up a
+ * cycle. Restore these to the inflight list.
+ */
+ while (!list_empty(&not_cycle_list)) {
+ u = list_entry(not_cycle_list.next, struct unix_sock, link);
+ u->gc_candidate = 0;
+ list_move_tail(&u->link, &gc_inflight_list);
+ }
+
+ /*
* Now gc_candidates contains only garbage. Restore original
* inflight counters for these as well, and remove the skbuffs
* which are creating the cycle(s).
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 25872747762..058f04f54b9 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -315,9 +315,9 @@ static void xfrm_policy_kill(struct xfrm_policy *policy)
return;
}
- spin_lock(&xfrm_policy_gc_lock);
+ spin_lock_bh(&xfrm_policy_gc_lock);
hlist_add_head(&policy->bydst, &xfrm_policy_gc_list);
- spin_unlock(&xfrm_policy_gc_lock);
+ spin_unlock_bh(&xfrm_policy_gc_lock);
schedule_work(&xfrm_policy_gc_work);
}
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 4a8a1abb59e..a278a6f3b99 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -1816,7 +1816,7 @@ static int copy_to_user_kmaddress(struct xfrm_kmaddress *k, struct sk_buff *skb)
uk.family = k->family;
uk.reserved = k->reserved;
memcpy(&uk.local, &k->local, sizeof(uk.local));
- memcpy(&uk.remote, &k->local, sizeof(uk.remote));
+ memcpy(&uk.remote, &k->remote, sizeof(uk.remote));
return nla_put(skb, XFRMA_KMADDRESS, sizeof(uk), &uk);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 23:05:25 +0000