Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

Pull user namespace changes from Eric Biederman:
 "This is a mostly modest set of changes to enable basic user namespace
  support.  This allows the code to code to compile with user namespaces
  enabled and removes the assumption there is only the initial user
  namespace.  Everything is converted except for the most complex of the
  filesystems: autofs4, 9p, afs, ceph, cifs, coda, fuse, gfs2, ncpfs,
  nfs, ocfs2 and xfs as those patches need a bit more review.

  The strategy is to push kuid_t and kgid_t values are far down into
  subsystems and filesystems as reasonable.  Leaving the make_kuid and
  from_kuid operations to happen at the edge of userspace, as the values
  come off the disk, and as the values come in from the network.
  Letting compile type incompatible compile errors (present when user
  namespaces are enabled) guide me to find the issues.

  The most tricky areas have been the places where we had an implicit
  union of uid and gid values and were storing them in an unsigned int.
  Those places were converted into explicit unions.  I made certain to
  handle those places with simple trivial patches.

  Out of that work I discovered we have generic interfaces for storing
  quota by projid.  I had never heard of the project identifiers before.
  Adding full user namespace support for project identifiers accounts
  for most of the code size growth in my git tree.

  Ultimately there will be work to relax privlige checks from
  "capable(FOO)" to "ns_capable(user_ns, FOO)" where it is safe allowing
  root in a user names to do those things that today we only forbid to
  non-root users because it will confuse suid root applications.

  While I was pushing kuid_t and kgid_t changes deep into the audit code
  I made a few other cleanups.  I capitalized on the fact we process
  netlink messages in the context of the message sender.  I removed
  usage of NETLINK_CRED, and started directly using current->tty.

  Some of these patches have also made it into maintainer trees, with no
  problems from identical code from different trees showing up in
  linux-next.

  After reading through all of this code I feel like I might be able to
  win a game of kernel trivial pursuit."

Fix up some fairly trivial conflicts in netfilter uid/git logging code.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (107 commits)
  userns: Convert the ufs filesystem to use kuid/kgid where appropriate
  userns: Convert the udf filesystem to use kuid/kgid where appropriate
  userns: Convert ubifs to use kuid/kgid
  userns: Convert squashfs to use kuid/kgid where appropriate
  userns: Convert reiserfs to use kuid and kgid where appropriate
  userns: Convert jfs to use kuid/kgid where appropriate
  userns: Convert jffs2 to use kuid and kgid where appropriate
  userns: Convert hpfs to use kuid and kgid where appropriate
  userns: Convert btrfs to use kuid/kgid where appropriate
  userns: Convert bfs to use kuid/kgid where appropriate
  userns: Convert affs to use kuid/kgid wherwe appropriate
  userns: On alpha modify linux_to_osf_stat to use convert from kuids and kgids
  userns: On ia64 deal with current_uid and current_gid being kuid and kgid
  userns: On ppc convert current_uid from a kuid before printing.
  userns: Convert s390 getting uid and gid system calls to use kuid and kgid
  userns: Convert s390 hypfs to use kuid and kgid where appropriate
  userns: Convert binder ipc to use kuids
  userns: Teach security_path_chown to take kuids and kgids
  userns: Add user namespace support to IMA
  userns: Convert EVM to deal with kuids and kgids in it's hmac computation
  ...

43 files changed, 276 insertions, 133 deletions

diff --git a/net/appletalk/atalk_proc.c b/net/appletalk/atalk_proc.c
index b5b1a221c24..c30f3a0717f 100644
--- a/net/appletalk/atalk_proc.c
+++ b/net/appletalk/atalk_proc.c
@@ -183,7 +183,8 @@ static int atalk_seq_socket_show(struct seq_file *seq, void *v)
 		   ntohs(at->dest_net), at->dest_node, at->dest_port,
 		   sk_wmem_alloc_get(s),
 		   sk_rmem_alloc_get(s),
-		   s->sk_state, SOCK_INODE(s->sk_socket)->i_uid);
+		   s->sk_state,
+		   from_kuid_munged(seq_user_ns(seq), sock_i_uid(s)));
 out:
 	return 0;
 }
diff --git a/net/ax25/ax25_uid.c b/net/ax25/ax25_uid.c
index e3c579ba632..957999e43ff 100644
--- a/net/ax25/ax25_uid.c
+++ b/net/ax25/ax25_uid.c
@@ -51,14 +51,14 @@ int ax25_uid_policy;
 
 EXPORT_SYMBOL(ax25_uid_policy);
 
-ax25_uid_assoc *ax25_findbyuid(uid_t uid)
+ax25_uid_assoc *ax25_findbyuid(kuid_t uid)
 {
 	ax25_uid_assoc *ax25_uid, *res = NULL;
 	struct hlist_node *node;
 
 	read_lock(&ax25_uid_lock);
 	ax25_uid_for_each(ax25_uid, node, &ax25_uid_list) {
-		if (ax25_uid->uid == uid) {
+		if (uid_eq(ax25_uid->uid, uid)) {
 			ax25_uid_hold(ax25_uid);
 			res = ax25_uid;
 			break;
@@ -84,7 +84,7 @@ int ax25_uid_ioctl(int cmd, struct sockaddr_ax25 *sax)
 		read_lock(&ax25_uid_lock);
 		ax25_uid_for_each(ax25_uid, node, &ax25_uid_list) {
 			if (ax25cmp(&sax->sax25_call, &ax25_uid->call) == 0) {
-				res = ax25_uid->uid;
+				res = from_kuid_munged(current_user_ns(), ax25_uid->uid);
 				break;
 			}
 		}
@@ -93,9 +93,14 @@ int ax25_uid_ioctl(int cmd, struct sockaddr_ax25 *sax)
 		return res;
 
 	case SIOCAX25ADDUID:
+	{
+		kuid_t sax25_kuid;
 		if (!capable(CAP_NET_ADMIN))
 			return -EPERM;
-		user = ax25_findbyuid(sax->sax25_uid);
+		sax25_kuid = make_kuid(current_user_ns(), sax->sax25_uid);
+		if (!uid_valid(sax25_kuid))
+			return -EINVAL;
+		user = ax25_findbyuid(sax25_kuid);
 		if (user) {
 			ax25_uid_put(user);
 			return -EEXIST;
@@ -106,7 +111,7 @@ int ax25_uid_ioctl(int cmd, struct sockaddr_ax25 *sax)
 			return -ENOMEM;
 
 		atomic_set(&ax25_uid->refcount, 1);
-		ax25_uid->uid  = sax->sax25_uid;
+		ax25_uid->uid  = sax25_kuid;
 		ax25_uid->call = sax->sax25_call;
 
 		write_lock(&ax25_uid_lock);
@@ -114,7 +119,7 @@ int ax25_uid_ioctl(int cmd, struct sockaddr_ax25 *sax)
 		write_unlock(&ax25_uid_lock);
 
 		return 0;
-
+	}
 	case SIOCAX25DELUID:
 		if (!capable(CAP_NET_ADMIN))
 			return -EPERM;
@@ -172,7 +177,9 @@ static int ax25_uid_seq_show(struct seq_file *seq, void *v)
 		struct ax25_uid_assoc *pt;
 
 		pt = hlist_entry(v, struct ax25_uid_assoc, uid_node);
-		seq_printf(seq, "%6d %s\n", pt->uid, ax2asc(buf, &pt->call));
+		seq_printf(seq, "%6d %s\n",
+			from_kuid_munged(seq_user_ns(seq), pt->uid),
+			ax2asc(buf, &pt->call));
 	}
 	return 0;
 }
diff --git a/net/core/dev.c b/net/core/dev.c
index 36c4a0cdb6c..17e912f9b71 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4512,8 +4512,8 @@ static void dev_change_rx_flags(struct net_device *dev, int flags)
 static int __dev_set_promiscuity(struct net_device *dev, int inc)
 {
 	unsigned int old_flags = dev->flags;
-	uid_t uid;
-	gid_t gid;
+	kuid_t uid;
+	kgid_t gid;
 
 	ASSERT_RTNL();
 
@@ -4544,8 +4544,9 @@ static int __dev_set_promiscuity(struct net_device *dev, int inc)
 				"dev=%s prom=%d old_prom=%d auid=%u uid=%u gid=%u ses=%u",
 				dev->name, (dev->flags & IFF_PROMISC),
 				(old_flags & IFF_PROMISC),
-				audit_get_loginuid(current),
-				uid, gid,
+				from_kuid(&init_user_ns, audit_get_loginuid(current)),
+				from_kuid(&init_user_ns, uid),
+				from_kgid(&init_user_ns, gid),
 				audit_get_sessionid(current));
 		}
 
diff --git a/net/core/scm.c b/net/core/scm.c
index 040cebeed45..6ab491d6c26 100644
--- a/net/core/scm.c
+++ b/net/core/scm.c
@@ -45,12 +45,17 @@
 static __inline__ int scm_check_creds(struct ucred *creds)
 {
 	const struct cred *cred = current_cred();
+	kuid_t uid = make_kuid(cred->user_ns, creds->uid);
+	kgid_t gid = make_kgid(cred->user_ns, creds->gid);
+
+	if (!uid_valid(uid) || !gid_valid(gid))
+		return -EINVAL;
 
 	if ((creds->pid == task_tgid_vnr(current) || capable(CAP_SYS_ADMIN)) &&
-	    ((creds->uid == cred->uid   || creds->uid == cred->euid ||
-	      creds->uid == cred->suid) || capable(CAP_SETUID)) &&
-	    ((creds->gid == cred->gid   || creds->gid == cred->egid ||
-	      creds->gid == cred->sgid) || capable(CAP_SETGID))) {
+	    ((uid_eq(uid, cred->uid)   || uid_eq(uid, cred->euid) ||
+	      uid_eq(uid, cred->suid)) || capable(CAP_SETUID)) &&
+	    ((gid_eq(gid, cred->gid)   || gid_eq(gid, cred->egid) ||
+	      gid_eq(gid, cred->sgid)) || capable(CAP_SETGID))) {
 	       return 0;
 	}
 	return -EPERM;
@@ -149,6 +154,9 @@ int __scm_send(struct socket *sock, struct msghdr *msg, struct scm_cookie *p)
 				goto error;
 			break;
 		case SCM_CREDENTIALS:
+		{
+			kuid_t uid;
+			kgid_t gid;
 			if (cmsg->cmsg_len != CMSG_LEN(sizeof(struct ucred)))
 				goto error;
 			memcpy(&p->creds, CMSG_DATA(cmsg), sizeof(struct ucred));
@@ -166,22 +174,29 @@ int __scm_send(struct socket *sock, struct msghdr *msg, struct scm_cookie *p)
 				p->pid = pid;
 			}
 
+			err = -EINVAL;
+			uid = make_kuid(current_user_ns(), p->creds.uid);
+			gid = make_kgid(current_user_ns(), p->creds.gid);
+			if (!uid_valid(uid) || !gid_valid(gid))
+				goto error;
+
 			if (!p->cred ||
-			    (p->cred->euid != p->creds.uid) ||
-			    (p->cred->egid != p->creds.gid)) {
+			    !uid_eq(p->cred->euid, uid) ||
+			    !gid_eq(p->cred->egid, gid)) {
 				struct cred *cred;
 				err = -ENOMEM;
 				cred = prepare_creds();
 				if (!cred)
 					goto error;
 
-				cred->uid = cred->euid = p->creds.uid;
-				cred->gid = cred->egid = p->creds.gid;
+				cred->uid = cred->euid = uid;
+				cred->gid = cred->egid = gid;
 				if (p->cred)
 					put_cred(p->cred);
 				p->cred = cred;
 			}
 			break;
+		}
 		default:
 			goto error;
 		}
diff --git a/net/core/sock.c b/net/core/sock.c
index 341fa1c3bd6..12cddd037bc 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -858,8 +858,8 @@ void cred_to_ucred(struct pid *pid, const struct cred *cred,
 	if (cred) {
 		struct user_namespace *current_ns = current_user_ns();
 
-		ucred->uid = from_kuid(current_ns, cred->euid);
-		ucred->gid = from_kgid(current_ns, cred->egid);
+		ucred->uid = from_kuid_munged(current_ns, cred->euid);
+		ucred->gid = from_kgid_munged(current_ns, cred->egid);
 	}
 }
 EXPORT_SYMBOL_GPL(cred_to_ucred);
@@ -1528,12 +1528,12 @@ void sock_edemux(struct sk_buff *skb)
 }
 EXPORT_SYMBOL(sock_edemux);
 
-int sock_i_uid(struct sock *sk)
+kuid_t sock_i_uid(struct sock *sk)
 {
-	int uid;
+	kuid_t uid;
 
 	read_lock_bh(&sk->sk_callback_lock);
-	uid = sk->sk_socket ? SOCK_INODE(sk->sk_socket)->i_uid : 0;
+	uid = sk->sk_socket ? SOCK_INODE(sk->sk_socket)->i_uid : GLOBAL_ROOT_UID;
 	read_unlock_bh(&sk->sk_callback_lock);
 	return uid;
 }
diff --git a/net/dns_resolver/dns_key.c b/net/dns_resolver/dns_key.c
index d9507dd0581..9807945a56d 100644
--- a/net/dns_resolver/dns_key.c
+++ b/net/dns_resolver/dns_key.c
@@ -259,7 +259,8 @@ static int __init init_dns_resolver(void)
 	if (!cred)
 		return -ENOMEM;
 
-	keyring = key_alloc(&key_type_keyring, ".dns_resolver", 0, 0, cred,
+	keyring = key_alloc(&key_type_keyring, ".dns_resolver",
+			    GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, cred,
 			    (KEY_POS_ALL & ~KEY_POS_SETATTR) |
 			    KEY_USR_VIEW | KEY_USR_READ,
 			    KEY_ALLOC_NOT_IN_QUOTA);
diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index 570e61f9611..8bc005b1435 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -69,6 +69,7 @@ static inline void inet_diag_unlock_handler(
 
 int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk,
 			      struct sk_buff *skb, struct inet_diag_req_v2 *req,
+			      struct user_namespace *user_ns,		      	
 			      u32 pid, u32 seq, u16 nlmsg_flags,
 			      const struct nlmsghdr *unlh)
 {
@@ -124,7 +125,7 @@ int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk,
 	}
 #endif
 
-	r->idiag_uid = sock_i_uid(sk);
+	r->idiag_uid = from_kuid_munged(user_ns, sock_i_uid(sk));
 	r->idiag_inode = sock_i_ino(sk);
 
 	if (ext & (1 << (INET_DIAG_MEMINFO - 1))) {
@@ -199,11 +200,12 @@ EXPORT_SYMBOL_GPL(inet_sk_diag_fill);
 
 static int inet_csk_diag_fill(struct sock *sk,
 			      struct sk_buff *skb, struct inet_diag_req_v2 *req,
+			      struct user_namespace *user_ns,
 			      u32 pid, u32 seq, u16 nlmsg_flags,
 			      const struct nlmsghdr *unlh)
 {
 	return inet_sk_diag_fill(sk, inet_csk(sk),
-			skb, req, pid, seq, nlmsg_flags, unlh);
+			skb, req, user_ns, pid, seq, nlmsg_flags, unlh);
 }
 
 static int inet_twsk_diag_fill(struct inet_timewait_sock *tw,
@@ -256,14 +258,16 @@ static int inet_twsk_diag_fill(struct inet_timewait_sock *tw,
 }
 
 static int sk_diag_fill(struct sock *sk, struct sk_buff *skb,
-			struct inet_diag_req_v2 *r, u32 pid, u32 seq, u16 nlmsg_flags,
+			struct inet_diag_req_v2 *r,
+			struct user_namespace *user_ns,
+			u32 pid, u32 seq, u16 nlmsg_flags,
 			const struct nlmsghdr *unlh)
 {
 	if (sk->sk_state == TCP_TIME_WAIT)
 		return inet_twsk_diag_fill((struct inet_timewait_sock *)sk,
 					   skb, r, pid, seq, nlmsg_flags,
 					   unlh);
-	return inet_csk_diag_fill(sk, skb, r, pid, seq, nlmsg_flags, unlh);
+	return inet_csk_diag_fill(sk, skb, r, user_ns, pid, seq, nlmsg_flags, unlh);
 }
 
 int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *in_skb,
@@ -311,6 +315,7 @@ int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo, struct sk_buff *in_s
 	}
 
 	err = sk_diag_fill(sk, rep, req,
+			   sk_user_ns(NETLINK_CB(in_skb).ssk),
 			   NETLINK_CB(in_skb).pid,
 			   nlh->nlmsg_seq, 0, nlh);
 	if (err < 0) {
@@ -551,6 +556,7 @@ static int inet_csk_diag_dump(struct sock *sk,
 		return 0;
 
 	return inet_csk_diag_fill(sk, skb, r,
+				  sk_user_ns(NETLINK_CB(cb->skb).ssk),
 				  NETLINK_CB(cb->skb).pid,
 				  cb->nlh->nlmsg_seq, NLM_F_MULTI, cb->nlh);
 }
@@ -591,7 +597,9 @@ static int inet_twsk_diag_dump(struct inet_timewait_sock *tw,
 }
 
 static int inet_diag_fill_req(struct sk_buff *skb, struct sock *sk,
-			      struct request_sock *req, u32 pid, u32 seq,
+			      struct request_sock *req,
+			      struct user_namespace *user_ns,
+			      u32 pid, u32 seq,
 			      const struct nlmsghdr *unlh)
 {
 	const struct inet_request_sock *ireq = inet_rsk(req);
@@ -625,7 +633,7 @@ static int inet_diag_fill_req(struct sk_buff *skb, struct sock *sk,
 	r->idiag_expires = jiffies_to_msecs(tmo);
 	r->idiag_rqueue = 0;
 	r->idiag_wqueue = 0;
-	r->idiag_uid = sock_i_uid(sk);
+	r->idiag_uid = from_kuid_munged(user_ns, sock_i_uid(sk));
 	r->idiag_inode = 0;
 #if IS_ENABLED(CONFIG_IPV6)
 	if (r->idiag_family == AF_INET6) {
@@ -702,6 +710,7 @@ static int inet_diag_dump_reqs(struct sk_buff *skb, struct sock *sk,
 			}
 
 			err = inet_diag_fill_req(skb, sk, req,
+					       sk_user_ns(NETLINK_CB(cb->skb).ssk),
 					       NETLINK_CB(cb->skb).pid,
 					       cb->nlh->nlmsg_seq, cb->nlh);
 			if (err < 0) {
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
index 6232d476f37..8f3d05424a3 100644
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -185,10 +185,10 @@ exit:
 	return sk;
 }
 
-static void inet_get_ping_group_range_net(struct net *net, gid_t *low,
-					  gid_t *high)
+static void inet_get_ping_group_range_net(struct net *net, kgid_t *low,
+					  kgid_t *high)
 {
-	gid_t *data = net->ipv4.sysctl_ping_group_range;
+	kgid_t *data = net->ipv4.sysctl_ping_group_range;
 	unsigned int seq;
 
 	do {
@@ -203,19 +203,13 @@ static void inet_get_ping_group_range_net(struct net *net, gid_t *low,
 static int ping_init_sock(struct sock *sk)
 {
 	struct net *net = sock_net(sk);
-	gid_t group = current_egid();
-	gid_t range[2];
+	kgid_t group = current_egid();
 	struct group_info *group_info = get_current_groups();
 	int i, j, count = group_info->ngroups;
 	kgid_t low, high;
 
-	inet_get_ping_group_range_net(net, range, range+1);
-	low = make_kgid(&init_user_ns, range[0]);
-	high = make_kgid(&init_user_ns, range[1]);
-	if (!gid_valid(low) || !gid_valid(high) || gid_lt(high, low))
-		return -EACCES;
-
-	if (range[0] <= group && group <= range[1])
+	inet_get_ping_group_range_net(net, &low, &high);
+	if (gid_lte(low, group) && gid_lte(group, high))
 		return 0;
 
 	for (i = 0; i < group_info->nblocks; i++) {
@@ -845,7 +839,9 @@ static void ping_format_sock(struct sock *sp, struct seq_file *f,
 		bucket, src, srcp, dest, destp, sp->sk_state,
 		sk_wmem_alloc_get(sp),
 		sk_rmem_alloc_get(sp),
-		0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp),
+		0, 0L, 0,
+		from_kuid_munged(seq_user_ns(f), sock_i_uid(sp)),
+		0, sock_i_ino(sp),
 		atomic_read(&sp->sk_refcnt), sp,
 		atomic_read(&sp->sk_drops), len);
 }
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index d23c6571ba1..73d1e4df4bf 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -994,7 +994,9 @@ static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
 		i, src, srcp, dest, destp, sp->sk_state,
 		sk_wmem_alloc_get(sp),
 		sk_rmem_alloc_get(sp),
-		0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp),
+		0, 0L, 0,
+		from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
+		0, sock_i_ino(sp),
 		atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
 }
 
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 1b5ce96707a..3e78c79b558 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -76,9 +76,9 @@ static int ipv4_local_port_range(ctl_table *table, int write,
 }
 
 
-static void inet_get_ping_group_range_table(struct ctl_table *table, gid_t *low, gid_t *high)
+static void inet_get_ping_group_range_table(struct ctl_table *table, kgid_t *low, kgid_t *high)
 {
-	gid_t *data = table->data;
+	kgid_t *data = table->data;
 	unsigned int seq;
 	do {
 		seq = read_seqbegin(&sysctl_local_ports.lock);
@@ -89,12 +89,12 @@ static void inet_get_ping_group_range_table(struct ctl_table *table, gid_t *low,
 }
 
 /* Update system visible IP port range */
-static void set_ping_group_range(struct ctl_table *table, gid_t range[2])
+static void set_ping_group_range(struct ctl_table *table, kgid_t low, kgid_t high)
 {
-	gid_t *data = table->data;
+	kgid_t *data = table->data;
 	write_seqlock(&sysctl_local_ports.lock);
-	data[0] = range[0];
-	data[1] = range[1];
+	data[0] = low;
+	data[1] = high;
 	write_sequnlock(&sysctl_local_ports.lock);
 }
 
@@ -103,21 +103,33 @@ static int ipv4_ping_group_range(ctl_table *table, int write,
 				 void __user *buffer,
 				 size_t *lenp, loff_t *ppos)
 {
+	struct user_namespace *user_ns = current_user_ns();
 	int ret;
-	gid_t range[2];
+	gid_t urange[2];
+	kgid_t low, high;
 	ctl_table tmp = {
-		.data = &range,
-		.maxlen = sizeof(range),
+		.data = &urange,
+		.maxlen = sizeof(urange),
 		.mode = table->mode,
 		.extra1 = &ip_ping_group_range_min,
 		.extra2 = &ip_ping_group_range_max,
 	};
 
-	inet_get_ping_group_range_table(table, range, range + 1);
+	inet_get_ping_group_range_table(table, &low, &high);
+	urange[0] = from_kgid_munged(user_ns, low);
+	urange[1] = from_kgid_munged(user_ns, high);
 	ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos);
 
-	if (write && ret == 0)
-		set_ping_group_range(table, range);
+	if (write && ret == 0) {
+		low = make_kgid(user_ns, urange[0]);
+		high = make_kgid(user_ns, urange[1]);
+		if (!gid_valid(low) || !gid_valid(high) ||
+		    (urange[1] < urange[0]) || gid_lt(high, low)) {
+			low = make_kgid(&init_user_ns, 1);
+			high = make_kgid(&init_user_ns, 0);
+		}
+		set_ping_group_range(table, low, high);
+	}
 
 	return ret;
 }
@@ -786,7 +798,7 @@ static struct ctl_table ipv4_net_table[] = {
 	{
 		.procname	= "ping_group_range",
 		.data		= &init_net.ipv4.sysctl_ping_group_range,
-		.maxlen		= sizeof(init_net.ipv4.sysctl_ping_group_range),
+		.maxlen		= sizeof(gid_t)*2,
 		.mode		= 0644,
 		.proc_handler	= ipv4_ping_group_range,
 	},
@@ -830,8 +842,8 @@ static __net_init int ipv4_sysctl_init_net(struct net *net)
 	 * Sane defaults - nobody may create ping sockets.
 	 * Boot scripts should set this to distro-specific group.
 	 */
-	net->ipv4.sysctl_ping_group_range[0] = 1;
-	net->ipv4.sysctl_ping_group_range[1] = 0;
+	net->ipv4.sysctl_ping_group_range[0] = make_kgid(&init_user_ns, 1);
+	net->ipv4.sysctl_ping_group_range[1] = make_kgid(&init_user_ns, 0);
 
 	tcp_init_mem(net);
 
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 00a748d1406..be23a0b7b89 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2393,7 +2393,7 @@ void tcp_proc_unregister(struct net *net, struct tcp_seq_afinfo *afinfo)
 EXPORT_SYMBOL(tcp_proc_unregister);
 
 static void get_openreq4(const struct sock *sk, const struct request_sock *req,
-			 struct seq_file *f, int i, int uid, int *len)
+			 struct seq_file *f, int i, kuid_t uid, int *len)
 {
 	const struct inet_request_sock *ireq = inet_rsk(req);
 	int ttd = req->expires - jiffies;
@@ -2410,7 +2410,7 @@ static void get_openreq4(const struct sock *sk, const struct request_sock *req,
 		1,    /* timers active (only the expire timer) */
 		jiffies_to_clock_t(ttd),
 		req->retrans,
-		uid,
+		from_kuid_munged(seq_user_ns(f), uid),
 		0,  /* non standard timer */
 		0, /* open_requests have no inode */
 		atomic_read(&sk->sk_refcnt),
@@ -2461,7 +2461,7 @@ static void get_tcp4_sock(struct sock *sk, struct seq_file *f, int i, int *len)
 		timer_active,
 		jiffies_to_clock_t(timer_expires - jiffies),
 		icsk->icsk_retransmits,
-		sock_i_uid(sk),
+		from_kuid_munged(seq_user_ns(f), sock_i_uid(sk)),
 		icsk->icsk_probes_out,
 		sock_i_ino(sk),
 		atomic_read(&sk->sk_refcnt), sk,
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 2814f66dac6..79c8dbe59b5 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -2115,7 +2115,9 @@ static void udp4_format_sock(struct sock *sp, struct seq_file *f,
 		bucket, src, srcp, dest, destp, sp->sk_state,
 		sk_wmem_alloc_get(sp),
 		sk_rmem_alloc_get(sp),
-		0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp),
+		0, 0L, 0,
+		from_kuid_munged(seq_user_ns(f), sock_i_uid(sp)),
+		0, sock_i_ino(sp),
 		atomic_read(&sp->sk_refcnt), sp,
 		atomic_read(&sp->sk_drops), len);
 }
diff --git a/net/ipv4/udp_diag.c b/net/ipv4/udp_diag.c
index 16d0960062b..d2f336ea82c 100644
--- a/net/ipv4/udp_diag.c
+++ b/net/ipv4/udp_diag.c
@@ -24,7 +24,9 @@ static int sk_diag_dump(struct sock *sk, struct sk_buff *skb,
 	if (!inet_diag_bc_sk(bc, sk))
 		return 0;
 
-	return inet_sk_diag_fill(sk, NULL, skb, req, NETLINK_CB(cb->skb).pid,
+	return inet_sk_diag_fill(sk, NULL, skb, req,
+			sk_user_ns(NETLINK_CB(cb->skb).ssk),
+			NETLINK_CB(cb->skb).pid,
 			cb->nlh->nlmsg_seq, NLM_F_MULTI, cb->nlh);
 }
 
@@ -69,6 +71,7 @@ static int udp_dump_one(struct udp_table *tbl, struct sk_buff *in_skb,
 		goto out;
 
 	err = inet_sk_diag_fill(sk, NULL, rep, req,
+			   sk_user_ns(NETLINK_CB(in_skb).ssk),
 			   NETLINK_CB(in_skb).pid,
 			   nlh->nlmsg_seq, 0, nlh);
 	if (err < 0) {
diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
index 9772fbd8a3f..90bbefb5794 100644
--- a/net/ipv6/ip6_flowlabel.c
+++ b/net/ipv6/ip6_flowlabel.c
@@ -22,6 +22,7 @@
 #include <linux/seq_file.h>
 #include <linux/slab.h>
 #include <linux/export.h>
+#include <linux/pid_namespace.h>
 
 #include <net/net_namespace.h>
 #include <net/sock.h>
@@ -91,6 +92,8 @@ static struct ip6_flowlabel *fl_lookup(struct net *net, __be32 label)
 static void fl_free(struct ip6_flowlabel *fl)
 {
 	if (fl) {
+		if (fl->share == IPV6_FL_S_PROCESS)
+			put_pid(fl->owner.pid);
 		release_net(fl->fl_net);
 		kfree(fl->opt);
 	}
@@ -394,10 +397,10 @@ fl_create(struct net *net, struct sock *sk, struct in6_flowlabel_req *freq,
 	case IPV6_FL_S_ANY:
 		break;
 	case IPV6_FL_S_PROCESS:
-		fl->owner = current->pid;
+		fl->owner.pid = get_task_pid(current, PIDTYPE_PID);
 		break;
 	case IPV6_FL_S_USER:
-		fl->owner = current_euid();
+		fl->owner.uid = current_euid();
 		break;
 	default:
 		err = -EINVAL;
@@ -561,7 +564,10 @@ recheck:
 				err = -EPERM;
 				if (fl1->share == IPV6_FL_S_EXCL ||
 				    fl1->share != fl->share ||
-				    fl1->owner != fl->owner)
+				    ((fl1->share == IPV6_FL_S_PROCESS) &&
+				     (fl1->owner.pid == fl->owner.pid)) ||
+				    ((fl1->share == IPV6_FL_S_USER) &&
+				     uid_eq(fl1->owner.uid, fl->owner.uid)))
 					goto release;
 
 				err = -EINVAL;
@@ -621,6 +627,7 @@ done:
 
 struct ip6fl_iter_state {
 	struct seq_net_private p;
+	struct pid_namespace *pid_ns;
 	int bucket;
 };
 
@@ -699,6 +706,7 @@ static void ip6fl_seq_stop(struct seq_file *seq, void *v)
 
 static int ip6fl_seq_show(struct seq_file *seq, void *v)
 {
+	struct ip6fl_iter_state *state = ip6fl_seq_private(seq);
 	if (v == SEQ_START_TOKEN)
 		seq_printf(seq, "%-5s %-1s %-6s %-6s %-6s %-8s %-32s %s\n",
 			   "Label", "S", "Owner", "Users", "Linger", "Expires", "Dst", "Opt");
@@ -708,7 +716,11 @@ static int ip6fl_seq_show(struct seq_file *seq, void *v)
 			   "%05X %-1d %-6d %-6d %-6ld %-8ld %pi6 %-4d\n",
 			   (unsigned int)ntohl(fl->label),
 			   fl->share,
-			   (int)fl->owner,
+			   ((fl->share == IPV6_FL_S_PROCESS) ?
+			    pid_nr_ns(fl->owner.pid, state->pid_ns) :
+			    ((fl->share == IPV6_FL_S_USER) ?
+			     from_kuid_munged(seq_user_ns(seq), fl->owner.uid) :
+			     0)),
 			   atomic_read(&fl->users),
 			   fl->linger/HZ,
 			   (long)(fl->expires - jiffies)/HZ,
@@ -727,8 +739,29 @@ static const struct seq_operations ip6fl_seq_ops = {
 
 static int ip6fl_seq_open(struct inode *inode, struct file *file)
 {
-	return seq_open_net(inode, file, &ip6fl_seq_ops,
-			    sizeof(struct ip6fl_iter_state));
+	struct seq_file *seq;
+	struct ip6fl_iter_state *state;
+	int err;
+
+	err = seq_open_net(inode, file, &ip6fl_seq_ops,
+			   sizeof(struct ip6fl_iter_state));
+
+	if (!err) {
+		seq = file->private_data;
+		state = ip6fl_seq_private(seq);
+		rcu_read_lock();
+		state->pid_ns = get_pid_ns(task_active_pid_ns(current));
+		rcu_read_unlock();
+	}
+	return err;
+}
+
+static int ip6fl_seq_release(struct inode *inode, struct file *file)
+{
+	struct seq_file *seq = file->private_data;
+	struct ip6fl_iter_state *state = ip6fl_seq_private(seq);
+	put_pid_ns(state->pid_ns);
+	return seq_release_net(inode, file);
 }
 
 static const struct file_operations ip6fl_seq_fops = {
@@ -736,7 +769,7 @@ static const struct file_operations ip6fl_seq_fops = {
 	.open		=	ip6fl_seq_open,
 	.read		=	seq_read,
 	.llseek		=	seq_lseek,
-	.release	=	seq_release_net,
+	.release	=	ip6fl_seq_release,
 };
 
 static int __net_init ip6_flowlabel_proc_init(struct net *net)
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 4a5f78b5049..d8e95c77db9 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -1250,7 +1250,8 @@ static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
 		   sk_wmem_alloc_get(sp),
 		   sk_rmem_alloc_get(sp),
 		   0, 0L, 0,
-		   sock_i_uid(sp), 0,
+		   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
+		   0,
 		   sock_i_ino(sp),
 		   atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
 }
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index acd32e3f1b6..342ec62cdbd 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1829,7 +1829,7 @@ static void tcp_v6_destroy_sock(struct sock *sk)
 #ifdef CONFIG_PROC_FS
 /* Proc filesystem TCPv6 sock list dumping. */
 static void get_openreq6(struct seq_file *seq,
-			 const struct sock *sk, struct request_sock *req, int i, int uid)
+			 const struct sock *sk, struct request_sock *req, int i, kuid_t uid)
 {
 	int ttd = req->expires - jiffies;
 	const struct in6_addr *src = &inet6_rsk(req)->loc_addr;
@@ -1853,7 +1853,7 @@ static void get_openreq6(struct seq_file *seq,
 		   1,   /* timers active (only the expire timer) */
 		   jiffies_to_clock_t(ttd),
 		   req->retrans,
-		   uid,
+		   from_kuid_munged(seq_user_ns(seq), uid),
 		   0,  /* non standard timer */
 		   0, /* open_requests have no inode */
 		   0, req);
@@ -1903,7 +1903,7 @@ static void get_tcp6_sock(struct seq_file *seq, struct sock *sp, int i)
 		   timer_active,
 		   jiffies_to_clock_t(timer_expires - jiffies),
 		   icsk->icsk_retransmits,
-		   sock_i_uid(sp),
+		   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
 		   icsk->icsk_probes_out,
 		   sock_i_ino(sp),
 		   atomic_read(&sp->sk_refcnt), sp,
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 07e2bfef684..fc9997260a6 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1469,7 +1469,8 @@ static void udp6_sock_seq_show(struct seq_file *seq, struct sock *sp, int bucket
 		   sk_wmem_alloc_get(sp),
 		   sk_rmem_alloc_get(sp),
 		   0, 0L, 0,
-		   sock_i_uid(sp), 0,
+		   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
+		   0,
 		   sock_i_ino(sp),
 		   atomic_read(&sp->sk_refcnt), sp,
 		   atomic_read(&sp->sk_drops));
diff --git a/net/ipx/ipx_proc.c b/net/ipx/ipx_proc.c
index f8ba30dfeca..02ff7f2f60d 100644
--- a/net/ipx/ipx_proc.c
+++ b/net/ipx/ipx_proc.c
@@ -217,7 +217,8 @@ static int ipx_seq_socket_show(struct seq_file *seq, void *v)
 	seq_printf(seq, "%08X  %08X  %02X     %03d\n",
 		   sk_wmem_alloc_get(s),
 		   sk_rmem_alloc_get(s),
-		   s->sk_state, SOCK_INODE(s->sk_socket)->i_uid);
+		   s->sk_state,
+		   from_kuid_munged(seq_user_ns(seq), sock_i_uid(s)));
 out:
 	return 0;
 }
diff --git a/net/key/af_key.c b/net/key/af_key.c
index 34e418508a6..0481d4b5147 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -3661,7 +3661,7 @@ static int pfkey_seq_show(struct seq_file *f, void *v)
 			       atomic_read(&s->sk_refcnt),
 			       sk_rmem_alloc_get(s),
 			       sk_wmem_alloc_get(s),
-			       sock_i_uid(s),
+			       from_kuid_munged(seq_user_ns(f), sock_i_uid(s)),
 			       sock_i_ino(s)
 			       );
 	return 0;
diff --git a/net/llc/llc_proc.c b/net/llc/llc_proc.c
index a1839c00435..7b4799cfbf8 100644
--- a/net/llc/llc_proc.c
+++ b/net/llc/llc_proc.c
@@ -151,7 +151,7 @@ static int llc_seq_socket_show(struct seq_file *seq, void *v)
 		   sk_wmem_alloc_get(sk),
 		   sk_rmem_alloc_get(sk) - llc->copied_seq,
 		   sk->sk_state,
-		   sk->sk_socket ? SOCK_INODE(sk->sk_socket)->i_uid : -1,
+		   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
 		   llc->link);
 out:
 	return 0;
diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c
index 5cfb5bedb2b..8cfc401e197 100644
--- a/net/netfilter/nfnetlink_log.c
+++ b/net/netfilter/nfnetlink_log.c
@@ -55,6 +55,7 @@ struct nfulnl_instance {
 	unsigned int qlen;		/* number of nlmsgs in skb */
 	struct sk_buff *skb;		/* pre-allocatd skb */
 	struct timer_list timer;
+	struct user_namespace *peer_user_ns;	/* User namespace of the peer process */
 	int peer_pid;			/* PID of the peer process */
 
 	/* configurable parameters */
@@ -132,7 +133,7 @@ instance_put(struct nfulnl_instance *inst)
 static void nfulnl_timer(unsigned long data);
 
 static struct nfulnl_instance *
-instance_create(u_int16_t group_num, int pid)
+instance_create(u_int16_t group_num, int pid, struct user_namespace *user_ns)
 {
 	struct nfulnl_instance *inst;
 	int err;
@@ -162,6 +163,7 @@ instance_create(u_int16_t group_num, int pid)
 
 	setup_timer(&inst->timer, nfulnl_timer, (unsigned long)inst);
 
+	inst->peer_user_ns = user_ns;
 	inst->peer_pid = pid;
 	inst->group_num = group_num;
 
@@ -505,8 +507,10 @@ __build_packet_message(struct nfulnl_instance *inst,
 		read_lock_bh(&sk->sk_callback_lock);
 		if (sk->sk_socket && sk->sk_socket->file) {
 			struct file *file = sk->sk_socket->file;
-			__be32 uid = htonl(file->f_cred->fsuid);
-			__be32 gid = htonl(file->f_cred->fsgid);
+			const struct cred *cred = file->f_cred;
+			struct user_namespace *user_ns = inst->peer_user_ns;
+			__be32 uid = htonl(from_kuid_munged(user_ns, cred->fsuid));
+			__be32 gid = htonl(from_kgid_munged(user_ns, cred->fsgid));
 			read_unlock_bh(&sk->sk_callback_lock);
 			if (nla_put_be32(inst->skb, NFULA_UID, uid) ||
 			    nla_put_be32(inst->skb, NFULA_GID, gid))
@@ -785,7 +789,8 @@ nfulnl_recv_config(struct sock *ctnl, struct sk_buff *skb,
 			}
 
 			inst = instance_create(group_num,
-					       NETLINK_CB(skb).pid);
+					       NETLINK_CB(skb).pid,
+					       sk_user_ns(NETLINK_CB(skb).ssk));
 			if (IS_ERR(inst)) {
 				ret = PTR_ERR(inst);
 				goto out;
diff --git a/net/netfilter/xt_LOG.c b/net/netfilter/xt_LOG.c
index 91e9af4d1f4..fa40096940a 100644
--- a/net/netfilter/xt_LOG.c
+++ b/net/netfilter/xt_LOG.c
@@ -151,10 +151,12 @@ static void dump_sk_uid_gid(struct sbuff *m, struct sock *sk)
 		return;
 
 	read_lock_bh(&sk->sk_callback_lock);
-	if (sk->sk_socket && sk->sk_socket->file)
+	if (sk->sk_socket && sk->sk_socket->file) {
+		const struct cred *cred = sk->sk_socket->file->f_cred;
 		sb_add(m, "UID=%u GID=%u ",
-			sk->sk_socket->file->f_cred->fsuid,
-			sk->sk_socket->file->f_cred->fsgid);
+			from_kuid_munged(&init_user_ns, cred->fsuid),
+			from_kgid_munged(&init_user_ns, cred->fsgid));
+	}
 	read_unlock_bh(&sk->sk_callback_lock);
 }
 
diff --git a/net/netfilter/xt_owner.c b/net/netfilter/xt_owner.c
index 772d7389b33..ca2e577ed8a 100644
--- a/net/netfilter/xt_owner.c
+++ b/net/netfilter/xt_owner.c
@@ -17,6 +17,17 @@
 #include <linux/netfilter/x_tables.h>
 #include <linux/netfilter/xt_owner.h>
 
+static int owner_check(const struct xt_mtchk_param *par)
+{
+	struct xt_owner_match_info *info = par->matchinfo;
+
+	/* For now only allow adding matches from the initial user namespace */
+	if ((info->match & (XT_OWNER_UID|XT_OWNER_GID)) &&
+	    (current_user_ns() != &init_user_ns))
+		return -EINVAL;
+	return 0;
+}
+
 static bool
 owner_mt(const struct sk_buff *skb, struct xt_action_param *par)
 {
@@ -37,17 +48,23 @@ owner_mt(const struct sk_buff *skb, struct xt_action_param *par)
 		return ((info->match ^ info->invert) &
 		       (XT_OWNER_UID | XT_OWNER_GID)) == 0;
 
-	if (info->match & XT_OWNER_UID)
-		if ((filp->f_cred->fsuid >= info->uid_min &&
-		    filp->f_cred->fsuid <= info->uid_max) ^
+	if (info->match & XT_OWNER_UID) {
+		kuid_t uid_min = make_kuid(&init_user_ns, info->uid_min);
+		kuid_t uid_max = make_kuid(&init_user_ns, info->uid_max);
+		if ((uid_gte(filp->f_cred->fsuid, uid_min) &&
+		     uid_lte(filp->f_cred->fsuid, uid_max)) ^
 		    !(info->invert & XT_OWNER_UID))
 			return false;
+	}
 
-	if (info->match & XT_OWNER_GID)
-		if ((filp->f_cred->fsgid >= info->gid_min &&
-		    filp->f_cred->fsgid <= info->gid_max) ^
+	if (info->match & XT_OWNER_GID) {
+		kgid_t gid_min = make_kgid(&init_user_ns, info->gid_min);
+		kgid_t gid_max = make_kgid(&init_user_ns, info->gid_max);
+		if ((gid_gte(filp->f_cred->fsgid, gid_min) &&
+		     gid_lte(filp->f_cred->fsgid, gid_max)) ^
 		    !(info->invert & XT_OWNER_GID))
 			return false;
+	}
 
 	return true;
 }
@@ -56,6 +73,7 @@ static struct xt_match owner_mt_reg __read_mostly = {
 	.name       = "owner",
 	.revision   = 1,
 	.family     = NFPROTO_UNSPEC,
+	.checkentry = owner_check,
 	.match      = owner_mt,
 	.matchsize  = sizeof(struct xt_owner_match_info),
 	.hooks      = (1 << NF_INET_LOCAL_OUT) |
diff --git a/net/netfilter/xt_recent.c b/net/netfilter/xt_recent.c
index ae2ad1eec8d..4635c9b0045 100644
--- a/net/netfilter/xt_recent.c
+++ b/net/netfilter/xt_recent.c
@@ -317,6 +317,8 @@ static int recent_mt_check(const struct xt_mtchk_param *par,
 	struct recent_table *t;
 #ifdef CONFIG_PROC_FS
 	struct proc_dir_entry *pde;
+	kuid_t uid;
+	kgid_t gid;
 #endif
 	unsigned int i;
 	int ret = -EINVAL;
@@ -372,6 +374,13 @@ static int recent_mt_check(const struct xt_mtchk_param *par,
 	for (i = 0; i < ip_list_hash_size; i++)
 		INIT_LIST_HEAD(&t->iphash[i]);
 #ifdef CONFIG_PROC_FS
+	uid = make_kuid(&init_user_ns, ip_list_uid);
+	gid = make_kgid(&init_user_ns, ip_list_gid);
+	if (!uid_valid(uid) || !gid_valid(gid)) {
+		kfree(t);
+		ret = -EINVAL;
+		goto out;
+	}
 	pde = proc_create_data(t->name, ip_list_perms, recent_net->xt_recent,
 		  &recent_mt_fops, t);
 	if (pde == NULL) {
@@ -379,8 +388,8 @@ static int recent_mt_check(const struct xt_mtchk_param *par,
 		ret = -ENOMEM;
 		goto out;
 	}
-	pde->uid = ip_list_uid;
-	pde->gid = ip_list_gid;
+	pde->uid = uid;
+	pde->gid = gid;
 #endif
 	spin_lock_bh(&recent_lock);
 	list_add_tail(&t->list, &recent_net->tables);
diff --git a/net/netlabel/netlabel_unlabeled.c b/net/netlabel/netlabel_unlabeled.c
index e7ff694f104..729a345c75a 100644
--- a/net/netlabel/netlabel_unlabeled.c
+++ b/net/netlabel/netlabel_unlabeled.c
@@ -1541,7 +1541,7 @@ int __init netlbl_unlabel_defconf(void)
 	 * it is called is at bootup before the audit subsystem is reporting
 	 * messages so don't worry to much about these values. */
 	security_task_getsecid(current, &audit_info.secid);
-	audit_info.loginuid = 0;
+	audit_info.loginuid = GLOBAL_ROOT_UID;
 	audit_info.sessionid = 0;
 
 	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
diff --git a/net/netlabel/netlabel_user.c b/net/netlabel/netlabel_user.c
index 9fae63f1029..9650c4ad5f8 100644
--- a/net/netlabel/netlabel_user.c
+++ b/net/netlabel/netlabel_user.c
@@ -109,7 +109,7 @@ struct audit_buffer *netlbl_audit_start_common(int type,
 		return NULL;
 
 	audit_log_format(audit_buf, "netlabel: auid=%u ses=%u",
-			 audit_info->loginuid,
+			 from_kuid(&init_user_ns, audit_info->loginuid),
 			 audit_info->sessionid);
 
 	if (audit_info->secid != 0 &&
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 527023823b5..38211991716 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -912,7 +912,8 @@ static void netlink_rcv_wake(struct sock *sk)
 		wake_up_interruptible(&nlk->wait);
 }
 
-static int netlink_unicast_kernel(struct sock *sk, struct sk_buff *skb)
+static int netlink_unicast_kernel(struct sock *sk, struct sk_buff *skb,
+				  struct sock *ssk)
 {
 	int ret;
 	struct netlink_sock *nlk = nlk_sk(sk);
@@ -921,6 +922,7 @@ static int netlink_unicast_kernel(struct sock *sk, struct sk_buff *skb)
 	if (nlk->netlink_rcv != NULL) {
 		ret = skb->len;
 		skb_set_owner_r(skb, sk);
+		NETLINK_CB(skb).ssk = ssk;
 		nlk->netlink_rcv(skb);
 		consume_skb(skb);
 	} else {
@@ -947,7 +949,7 @@ retry:
 		return PTR_ERR(sk);
 	}
 	if (netlink_is_kernel(sk))
-		return netlink_unicast_kernel(sk, skb);
+		return netlink_unicast_kernel(sk, skb, ssk);
 
 	if (sk_filter(sk, skb)) {
 		err = skb->len;
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index c5c9e2a5421..048fba476aa 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -3854,7 +3854,7 @@ static int packet_seq_show(struct seq_file *seq, void *v)
 			   po->ifindex,
 			   po->running,
 			   atomic_read(&s->sk_rmem_alloc),
-			   sock_i_uid(s),
+			   from_kuid_munged(seq_user_ns(seq), sock_i_uid(s)),
 			   sock_i_ino(s));
 	}
 
diff --git a/net/phonet/socket.c b/net/phonet/socket.c
index 0acc943f713..b7e98278225 100644
--- a/net/phonet/socket.c
+++ b/net/phonet/socket.c
@@ -612,7 +612,8 @@ static int pn_sock_seq_show(struct seq_file *seq, void *v)
 			sk->sk_protocol, pn->sobject, pn->dobject,
 			pn->resource, sk->sk_state,
 			sk_wmem_alloc_get(sk), sk_rmem_alloc_get(sk),
-			sock_i_uid(sk), sock_i_ino(sk),
+			from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
+			sock_i_ino(sk),
 			atomic_read(&sk->sk_refcnt), sk,
 			atomic_read(&sk->sk_drops), &len);
 	}
@@ -796,7 +797,8 @@ static int pn_res_seq_show(struct seq_file *seq, void *v)
 		struct sock *sk = *psk;
 
 		seq_printf(seq, "%02X %5d %lu%n",
-			   (int) (psk - pnres.sk), sock_i_uid(sk),
+			   (int) (psk - pnres.sk),
+			   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
 			   sock_i_ino(sk), &len);
 	}
 	seq_printf(seq, "%*s\n", 63 - len, "");
diff --git a/net/rxrpc/ar-key.c b/net/rxrpc/ar-key.c
index 8b1f9f49960..011d2384b11 100644
--- a/net/rxrpc/ar-key.c
+++ b/net/rxrpc/ar-key.c
@@ -948,7 +948,8 @@ int rxrpc_get_server_data_key(struct rxrpc_connection *conn,
 
 	_enter("");
 
-	key = key_alloc(&key_type_rxrpc, "x", 0, 0, cred, 0,
+	key = key_alloc(&key_type_rxrpc, "x",
+			GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, cred, 0,
 			KEY_ALLOC_NOT_IN_QUOTA);
 	if (IS_ERR(key)) {
 		_leave(" = -ENOMEM [alloc %ld]", PTR_ERR(key));
@@ -994,7 +995,8 @@ struct key *rxrpc_get_null_key(const char *keyname)
 	struct key *key;
 	int ret;
 
-	key = key_alloc(&key_type_rxrpc, keyname, 0, 0, cred,
+	key = key_alloc(&key_type_rxrpc, keyname,
+			GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, cred,
 			KEY_POS_SEARCH, KEY_ALLOC_NOT_IN_QUOTA);
 	if (IS_ERR(key))
 		return key;
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 6dd1131f2ec..dc3ef5aef35 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -319,7 +319,7 @@ replay:
 		}
 	}
 
-	err = tp->ops->change(tp, cl, t->tcm_handle, tca, &fh);
+	err = tp->ops->change(skb, tp, cl, t->tcm_handle, tca, &fh);
 	if (err == 0) {
 		if (tp_created) {
 			spin_lock_bh(root_lock);
diff --git a/net/sched/cls_basic.c b/net/sched/cls_basic.c
index 590960a22a7..344a11b342e 100644
--- a/net/sched/cls_basic.c
+++ b/net/sched/cls_basic.c
@@ -162,7 +162,8 @@ errout:
 	return err;
 }
 
-static int basic_change(struct tcf_proto *tp, unsigned long base, u32 handle,
+static int basic_change(struct sk_buff *in_skb,
+			struct tcf_proto *tp, unsigned long base, u32 handle,
 			struct nlattr **tca, unsigned long *arg)
 {
 	int err;
diff --git a/net/sched/cls_cgroup.c b/net/sched/cls_cgroup.c
index 4a23ccca6b7..2ecde225ae6 100644
--- a/net/sched/cls_cgroup.c
+++ b/net/sched/cls_cgroup.c
@@ -158,7 +158,8 @@ static const struct nla_policy cgroup_policy[TCA_CGROUP_MAX + 1] = {
 	[TCA_CGROUP_EMATCHES]	= { .type = NLA_NESTED },
 };
 
-static int cls_cgroup_change(struct tcf_proto *tp, unsigned long base,
+static int cls_cgroup_change(struct sk_buff *in_skb,
+			     struct tcf_proto *tp, unsigned long base,
 			     u32 handle, struct nlattr **tca,
 			     unsigned long *arg)
 {
diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c
index ccd08c8dc6a..ce82d0cb1b4 100644
--- a/net/sched/cls_flow.c
+++ b/net/sched/cls_flow.c
@@ -193,15 +193,19 @@ static u32 flow_get_rtclassid(const struct sk_buff *skb)
 
 static u32 flow_get_skuid(const struct sk_buff *skb)
 {
-	if (skb->sk && skb->sk->sk_socket && skb->sk->sk_socket->file)
-		return skb->sk->sk_socket->file->f_cred->fsuid;
+	if (skb->sk && skb->sk->sk_socket && skb->sk->sk_socket->file) {
+		kuid_t skuid = skb->sk->sk_socket->file->f_cred->fsuid;
+		return from_kuid(&init_user_ns, skuid);
+	}
 	return 0;
 }
 
 static u32 flow_get_skgid(const struct sk_buff *skb)
 {
-	if (skb->sk && skb->sk->sk_socket && skb->sk->sk_socket->file)
-		return skb->sk->sk_socket->file->f_cred->fsgid;
+	if (skb->sk && skb->sk->sk_socket && skb->sk->sk_socket->file) {
+		kgid_t skgid = skb->sk->sk_socket->file->f_cred->fsgid;
+		return from_kgid(&init_user_ns, skgid);
+	}
 	return 0;
 }
 
@@ -347,7 +351,8 @@ static const struct nla_policy flow_policy[TCA_FLOW_MAX + 1] = {
 	[TCA_FLOW_PERTURB]	= { .type = NLA_U32 },
 };
 
-static int flow_change(struct tcf_proto *tp, unsigned long base,
+static int flow_change(struct sk_buff *in_skb, 
+		       struct tcf_proto *tp, unsigned long base,
 		       u32 handle, struct nlattr **tca,
 		       unsigned long *arg)
 {
@@ -386,6 +391,10 @@ static int flow_change(struct tcf_proto *tp, unsigned long base,
 
 		if (fls(keymask) - 1 > FLOW_KEY_MAX)
 			return -EOPNOTSUPP;
+
+		if ((keymask & (FLOW_KEY_SKUID|FLOW_KEY_SKGID)) &&
+		    sk_user_ns(NETLINK_CB(in_skb).ssk) != &init_user_ns)
+			return -EOPNOTSUPP;
 	}
 
 	err = tcf_exts_validate(tp, tb, tca[TCA_RATE], &e, &flow_ext_map);
diff --git a/net/sched/cls_fw.c b/net/sched/cls_fw.c
index 8384a479724..4075a0aef2a 100644
--- a/net/sched/cls_fw.c
+++ b/net/sched/cls_fw.c
@@ -233,7 +233,8 @@ errout:
 	return err;
 }
 
-static int fw_change(struct tcf_proto *tp, unsigned long base,
+static int fw_change(struct sk_buff *in_skb,
+		     struct tcf_proto *tp, unsigned long base,
 		     u32 handle,
 		     struct nlattr **tca,
 		     unsigned long *arg)
diff --git a/net/sched/cls_route.c b/net/sched/cls_route.c
index 44f405cb9aa..c10d57bf98f 100644
--- a/net/sched/cls_route.c
+++ b/net/sched/cls_route.c
@@ -427,7 +427,8 @@ errout:
 	return err;
 }
 
-static int route4_change(struct tcf_proto *tp, unsigned long base,
+static int route4_change(struct sk_buff *in_skb,
+		       struct tcf_proto *tp, unsigned long base,
 		       u32 handle,
 		       struct nlattr **tca,
 		       unsigned long *arg)
diff --git a/net/sched/cls_rsvp.h b/net/sched/cls_rsvp.h
index 18ab93ec8d7..494bbb90924 100644
--- a/net/sched/cls_rsvp.h
+++ b/net/sched/cls_rsvp.h
@@ -416,7 +416,8 @@ static const struct nla_policy rsvp_policy[TCA_RSVP_MAX + 1] = {
 	[TCA_RSVP_PINFO]	= { .len = sizeof(struct tc_rsvp_pinfo) },
 };
 
-static int rsvp_change(struct tcf_proto *tp, unsigned long base,
+static int rsvp_change(struct sk_buff *in_skb,
+		       struct tcf_proto *tp, unsigned long base,
 		       u32 handle,
 		       struct nlattr **tca,
 		       unsigned long *arg)
diff --git a/net/sched/cls_tcindex.c b/net/sched/cls_tcindex.c
index fe29420d0b0..a1293b4ab7a 100644
--- a/net/sched/cls_tcindex.c
+++ b/net/sched/cls_tcindex.c
@@ -332,7 +332,8 @@ errout:
 }
 
 static int
-tcindex_change(struct tcf_proto *tp, unsigned long base, u32 handle,
+tcindex_change(struct sk_buff *in_skb,
+	       struct tcf_proto *tp, unsigned long base, u32 handle,
 	       struct nlattr **tca, unsigned long *arg)
 {
 	struct nlattr *opt = tca[TCA_OPTIONS];
diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
index d45373fb00b..c7c27bc91b5 100644
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -544,7 +544,8 @@ errout:
 	return err;
 }
 
-static int u32_change(struct tcf_proto *tp, unsigned long base, u32 handle,
+static int u32_change(struct sk_buff *in_skb,
+		      struct tcf_proto *tp, unsigned long base, u32 handle,
 		      struct nlattr **tca,
 		      unsigned long *arg)
 {
diff --git a/net/sctp/proc.c b/net/sctp/proc.c
index 1e2eee88c3e..dc12febc977 100644
--- a/net/sctp/proc.c
+++ b/net/sctp/proc.c
@@ -216,7 +216,8 @@ static int sctp_eps_seq_show(struct seq_file *seq, void *v)
 		seq_printf(seq, "%8pK %8pK %-3d %-3d %-4d %-5d %5d %5lu ", ep, sk,
 			   sctp_sk(sk)->type, sk->sk_state, hash,
 			   epb->bind_addr.port,
-			   sock_i_uid(sk), sock_i_ino(sk));
+			   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
+			   sock_i_ino(sk));
 
 		sctp_seq_dump_local_addrs(seq, epb);
 		seq_printf(seq, "\n");
@@ -324,7 +325,8 @@ static int sctp_assocs_seq_show(struct seq_file *seq, void *v)
 			   assoc->assoc_id,
 			   assoc->sndbuf_used,
 			   atomic_read(&assoc->rmem_alloc),
-			   sock_i_uid(sk), sock_i_ino(sk),
+			   from_kuid_munged(seq_user_ns(seq), sock_i_uid(sk)),
+			   sock_i_ino(sk),
 			   epb->bind_addr.port,
 			   assoc->peer.port);
 		seq_printf(seq, " ");
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 387848e9007..46550997548 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -2633,12 +2633,12 @@ static void xfrm_policy_fini(struct net *net)
 
 	flush_work(&net->xfrm.policy_hash_work);
 #ifdef CONFIG_XFRM_SUB_POLICY
-	audit_info.loginuid = -1;
+	audit_info.loginuid = INVALID_UID;
 	audit_info.sessionid = -1;
 	audit_info.secid = 0;
 	xfrm_policy_flush(net, XFRM_POLICY_TYPE_SUB, &audit_info);
 #endif
-	audit_info.loginuid = -1;
+	audit_info.loginuid = INVALID_UID;
 	audit_info.sessionid = -1;
 	audit_info.secid = 0;
 	xfrm_policy_flush(net, XFRM_POLICY_TYPE_MAIN, &audit_info);
@@ -2745,7 +2745,7 @@ static void xfrm_audit_common_policyinfo(struct xfrm_policy *xp,
 }
 
 void xfrm_audit_policy_add(struct xfrm_policy *xp, int result,
-			   uid_t auid, u32 sessionid, u32 secid)
+			   kuid_t auid, u32 sessionid, u32 secid)
 {
 	struct audit_buffer *audit_buf;
 
@@ -2760,7 +2760,7 @@ void xfrm_audit_policy_add(struct xfrm_policy *xp, int result,
 EXPORT_SYMBOL_GPL(xfrm_audit_policy_add);
 
 void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result,
-			      uid_t auid, u32 sessionid, u32 secid)
+			      kuid_t auid, u32 sessionid, u32 secid)
 {
 	struct audit_buffer *audit_buf;
 
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 210be48d8ae..bd2d9841ad5 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -2060,7 +2060,7 @@ void xfrm_state_fini(struct net *net)
 	unsigned int sz;
 
 	flush_work(&net->xfrm.state_hash_work);
-	audit_info.loginuid = -1;
+	audit_info.loginuid = INVALID_UID;
 	audit_info.sessionid = -1;
 	audit_info.secid = 0;
 	xfrm_state_flush(net, IPSEC_PROTO_ANY, &audit_info);
@@ -2127,7 +2127,7 @@ static void xfrm_audit_helper_pktinfo(struct sk_buff *skb, u16 family,
 }
 
 void xfrm_audit_state_add(struct xfrm_state *x, int result,
-			  uid_t auid, u32 sessionid, u32 secid)
+			  kuid_t auid, u32 sessionid, u32 secid)
 {
 	struct audit_buffer *audit_buf;
 
@@ -2142,7 +2142,7 @@ void xfrm_audit_state_add(struct xfrm_state *x, int result,
 EXPORT_SYMBOL_GPL(xfrm_audit_state_add);
 
 void xfrm_audit_state_delete(struct xfrm_state *x, int result,
-			     uid_t auid, u32 sessionid, u32 secid)
+			     kuid_t auid, u32 sessionid, u32 secid)
 {
 	struct audit_buffer *audit_buf;
 
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 289f4bf18ff..bc542448307 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -595,7 +595,7 @@ static int xfrm_add_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
 	struct xfrm_state *x;
 	int err;
 	struct km_event c;
-	uid_t loginuid = audit_get_loginuid(current);
+	kuid_t loginuid = audit_get_loginuid(current);
 	u32 sessionid = audit_get_sessionid(current);
 	u32 sid;
 
@@ -674,7 +674,7 @@ static int xfrm_del_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
 	int err = -ESRCH;
 	struct km_event c;
 	struct xfrm_usersa_id *p = nlmsg_data(nlh);
-	uid_t loginuid = audit_get_loginuid(current);
+	kuid_t loginuid = audit_get_loginuid(current);
 	u32 sessionid = audit_get_sessionid(current);
 	u32 sid;
 
@@ -1393,7 +1393,7 @@ static int xfrm_add_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
 	struct km_event c;
 	int err;
 	int excl;
-	uid_t loginuid = audit_get_loginuid(current);
+	kuid_t loginuid = audit_get_loginuid(current);
 	u32 sessionid = audit_get_sessionid(current);
 	u32 sid;
 
@@ -1651,7 +1651,7 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
 					    NETLINK_CB(skb).pid);
 		}
 	} else {
-		uid_t loginuid = audit_get_loginuid(current);
+		kuid_t loginuid = audit_get_loginuid(current);
 		u32 sessionid = audit_get_sessionid(current);
 		u32 sid;
 
@@ -1945,7 +1945,7 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
 
 	err = 0;
 	if (up->hard) {
-		uid_t loginuid = audit_get_loginuid(current);
+		kuid_t loginuid = audit_get_loginuid(current);
 		u32 sessionid = audit_get_sessionid(current);
 		u32 sid;
 
@@ -1988,7 +1988,7 @@ static int xfrm_add_sa_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
 	km_state_expired(x, ue->hard, current->pid);
 
 	if (ue->hard) {
-		uid_t loginuid = audit_get_loginuid(current);
+		kuid_t loginuid = audit_get_loginuid(current);
 		u32 sessionid = audit_get_sessionid(current);
 		u32 sid;