[PATCH AUTOSEL 5.2 020/123] libbpf: sanitize VAR to conservative 1-byte INT

[PATCH AUTOSEL 5.2 020/123] libbpf: sanitize VAR to conservative 1-byte INT

[Sasha Levin]

From: Andrii Nakryiko <andriin@fb.com>

[ Upstream commit 1d4126c4e1190d2f7d3f388552f9bd17ae0c64fc ]

If VAR in non-sanitized BTF was size less than 4, converting such VAR
into an INT with size=4 will cause BTF validation failure due to
violationg of STRUCT (into which DATASEC was converted) member size.
Fix by conservatively using size=1.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 tools/lib/bpf/libbpf.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 3865a5d272514..77e14d9954796 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -1044,8 +1044,13 @@ static void bpf_object__sanitize_btf(struct bpf_object *obj)
 		if (!has_datasec && kind == BTF_KIND_VAR) {
 			/* replace VAR with INT */
 			t->info = BTF_INFO_ENC(BTF_KIND_INT, 0, 0);
-			t->size = sizeof(int);
-			*(int *)(t+1) = BTF_INT_ENC(0, 0, 32);
+			/*
+			 * using size = 1 is the safest choice, 4 will be too
+			 * big and cause kernel BTF validation failure if
+			 * original variable took less than 4 bytes
+			 */
+			t->size = 1;
+			*(int *)(t+1) = BTF_INT_ENC(0, 0, 8);
 		} else if (!has_datasec && kind == BTF_KIND_DATASEC) {
 			/* replace DATASEC with STRUCT */
 			struct btf_var_secinfo *v = (void *)(t + 1);
-- 
2.20.1

[PATCH AUTOSEL 5.2 021/123] netfilter: ebtables: fix a memory leak bug in compat

[Sasha Levin]

From: Wenwen Wang <wenwen@cs.uga.edu>

[ Upstream commit 15a78ba1844a8e052c1226f930133de4cef4e7ad ]

In compat_do_replace(), a temporary buffer is allocated through vmalloc()
to hold entries copied from the user space. The buffer address is firstly
saved to 'newinfo->entries', and later on assigned to 'entries_tmp'. Then
the entries in this temporary buffer is copied to the internal kernel
structure through compat_copy_entries(). If this copy process fails,
compat_do_replace() should be terminated. However, the allocated temporary
buffer is not freed on this path, leading to a memory leak.

To fix the bug, free the buffer before returning from compat_do_replace().

Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/bridge/netfilter/ebtables.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 963dfdc148272..fd84b48e48b57 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -2261,8 +2261,10 @@ static int compat_do_replace(struct net *net, void __user *user,
 	state.buf_kern_len = size64;
 
 	ret = compat_copy_entries(entries_tmp, tmp.entries_size, &state);
-	if (WARN_ON(ret < 0))
+	if (WARN_ON(ret < 0)) {
+		vfree(entries_tmp);
 		goto out_unlock;
+	}
 
 	vfree(entries_tmp);
 	tmp.entries_size = size64;
-- 
2.20.1

[PATCH AUTOSEL 5.2 025/123] bpf: sockmap, sock_map_delete needs to use xchg

[Sasha Levin]

From: John Fastabend <john.fastabend@gmail.com>

[ Upstream commit 45a4521dcbd92e71c9e53031b40e34211d3b4feb ]

__sock_map_delete() may be called from a tcp event such as unhash or
close from the following trace,

  tcp_bpf_close()
    tcp_bpf_remove()
      sk_psock_unlink()
        sock_map_delete_from_link()
          __sock_map_delete()

In this case the sock lock is held but this only protects against
duplicate removals on the TCP side. If the map is free'd then we have
this trace,

  sock_map_free
    xchg()                  <- replaces map entry
    sock_map_unref()
      sk_psock_put()
        sock_map_del_link()

The __sock_map_delete() call however uses a read, test, null over the
map entry which can result in both paths trying to free the map
entry.

To fix use xchg in TCP paths as well so we avoid having two references
to the same map entry.

Fixes: 604326b41a6fb ("bpf, sockmap: convert to generic sk_msg interface")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/core/sock_map.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/net/core/sock_map.c b/net/core/sock_map.c
index be6092ac69f8a..1d40e040320d2 100644
--- a/net/core/sock_map.c
+++ b/net/core/sock_map.c
@@ -281,16 +281,20 @@ static int __sock_map_delete(struct bpf_stab *stab, struct sock *sk_test,
 			     struct sock **psk)
 {
 	struct sock *sk;
+	int err = 0;
 
 	raw_spin_lock_bh(&stab->lock);
 	sk = *psk;
 	if (!sk_test || sk_test == sk)
-		*psk = NULL;
+		sk = xchg(psk, NULL);
+
+	if (likely(sk))
+		sock_map_unref(sk, psk);
+	else
+		err = -EINVAL;
+
 	raw_spin_unlock_bh(&stab->lock);
-	if (unlikely(!sk))
-		return -EINVAL;
-	sock_map_unref(sk, psk);
-	return 0;
+	return err;
 }
 
 static void sock_map_delete_from_link(struct bpf_map *map, struct sock *sk,
-- 
2.20.1

[PATCH AUTOSEL 5.2 026/123] bpf: sockmap, synchronize_rcu before free'ing map

[Sasha Levin]

From: John Fastabend <john.fastabend@gmail.com>

[ Upstream commit 2bb90e5cc90e1d09f631aeab041a9cf913a5bbe5 ]

We need to have a synchronize_rcu before free'ing the sockmap because
any outstanding psock references will have a pointer to the map and
when they use this could trigger a use after free.

Fixes: 604326b41a6fb ("bpf, sockmap: convert to generic sk_msg interface")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/core/sock_map.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/core/sock_map.c b/net/core/sock_map.c
index 1d40e040320d2..bbc91597d8364 100644
--- a/net/core/sock_map.c
+++ b/net/core/sock_map.c
@@ -252,6 +252,8 @@ static void sock_map_free(struct bpf_map *map)
 	raw_spin_unlock_bh(&stab->lock);
 	rcu_read_unlock();
 
+	synchronize_rcu();
+
 	bpf_map_area_free(stab->sks);
 	kfree(stab);
 }
-- 
2.20.1

[PATCH AUTOSEL 5.2 027/123] bpf: sockmap, only create entry if ulp is not already enabled

[Sasha Levin]

From: John Fastabend <john.fastabend@gmail.com>

[ Upstream commit 0e858739c2d2eedeeac1d35bfa0ec3cc2a7190d8 ]

Sockmap does not currently support adding sockets after TLS has been
enabled. There never was a real use case for this so it was never
added. But, we lost the test for ULP at some point so add it here
and fail the socket insert if TLS is enabled. Future work could
make sockmap support this use case but fixup the bug here.

Fixes: 604326b41a6fb ("bpf, sockmap: convert to generic sk_msg interface")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/core/sock_map.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/core/sock_map.c b/net/core/sock_map.c
index bbc91597d8364..8a4a45e7c29df 100644
--- a/net/core/sock_map.c
+++ b/net/core/sock_map.c
@@ -339,6 +339,7 @@ static int sock_map_update_common(struct bpf_map *map, u32 idx,
 				  struct sock *sk, u64 flags)
 {
 	struct bpf_stab *stab = container_of(map, struct bpf_stab, map);
+	struct inet_connection_sock *icsk = inet_csk(sk);
 	struct sk_psock_link *link;
 	struct sk_psock *psock;
 	struct sock *osk;
@@ -349,6 +350,8 @@ static int sock_map_update_common(struct bpf_map *map, u32 idx,
 		return -EINVAL;
 	if (unlikely(idx >= map->max_entries))
 		return -E2BIG;
+	if (unlikely(icsk->icsk_ulp_data))
+		return -EINVAL;
 
 	link = sk_psock_init_link();
 	if (!link)
-- 
2.20.1

[PATCH AUTOSEL 5.2 028/123] selftests/bpf: fix sendmsg6_prog on s390

[Sasha Levin]

From: Ilya Leoshkevich <iii@linux.ibm.com>

[ Upstream commit c8eee4135a456bc031d67cadc454e76880d1afd8 ]

"sendmsg6: rewrite IP & port (C)" fails on s390, because the code in
sendmsg_v6_prog() assumes that (ctx->user_ip6[0] & 0xFFFF) refers to
leading IPv6 address digits, which is not the case on big-endian
machines.

Since checking bitwise operations doesn't seem to be the point of the
test, replace two short comparisons with a single int comparison.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Acked-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 tools/testing/selftests/bpf/progs/sendmsg6_prog.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tools/testing/selftests/bpf/progs/sendmsg6_prog.c b/tools/testing/selftests/bpf/progs/sendmsg6_prog.c
index 5aeaa284fc474..a680628204108 100644
--- a/tools/testing/selftests/bpf/progs/sendmsg6_prog.c
+++ b/tools/testing/selftests/bpf/progs/sendmsg6_prog.c
@@ -41,8 +41,7 @@ int sendmsg_v6_prog(struct bpf_sock_addr *ctx)
 	}
 
 	/* Rewrite destination. */
-	if ((ctx->user_ip6[0] & 0xFFFF) == bpf_htons(0xFACE) &&
-	     ctx->user_ip6[0] >> 16 == bpf_htons(0xB00C)) {
+	if (ctx->user_ip6[0] == bpf_htonl(0xFACEB00C)) {
 		ctx->user_ip6[0] = bpf_htonl(DST_REWRITE_IP6_0);
 		ctx->user_ip6[1] = bpf_htonl(DST_REWRITE_IP6_1);
 		ctx->user_ip6[2] = bpf_htonl(DST_REWRITE_IP6_2);
-- 
2.20.1

[PATCH AUTOSEL 5.2 030/123] bonding: Force slave speed check after link state recovery for 802.3ad

[Sasha Levin]

From: Thomas Falcon <tlfalcon@linux.ibm.com>

[ Upstream commit 12185dfe44360f814ac4ead9d22ad2af7511b2e9 ]

The following scenario was encountered during testing of logical
partition mobility on pseries partitions with bonded ibmvnic
adapters in LACP mode.

1. Driver receives a signal that the device has been
   swapped, and it needs to reset to initialize the new
   device.

2. Driver reports loss of carrier and begins initialization.

3. Bonding driver receives NETDEV_CHANGE notifier and checks
   the slave's current speed and duplex settings. Because these
   are unknown at the time, the bond sets its link state to
   BOND_LINK_FAIL and handles the speed update, clearing
   AD_PORT_LACP_ENABLE.

4. Driver finishes recovery and reports that the carrier is on.

5. Bond receives a new notification and checks the speed again.
   The speeds are valid but miimon has not altered the link
   state yet.  AD_PORT_LACP_ENABLE remains off.

Because the slave's link state is still BOND_LINK_FAIL,
no further port checks are made when it recovers. Though
the slave devices are operational and have valid speed
and duplex settings, the bond will not send LACPDU's. The
simplest fix I can see is to force another speed check
in bond_miimon_commit. This way the bond will update
AD_PORT_LACP_ENABLE if needed when transitioning from
BOND_LINK_FAIL to BOND_LINK_UP.

CC: Jarod Wilson <jarod@redhat.com>
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Veaceslav Falico <vfalico@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Thomas Falcon <tlfalcon@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/bonding/bond_main.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index b0aab3a0a1bfa..41f6da5b4bab8 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -2203,6 +2203,15 @@ static void bond_miimon_commit(struct bonding *bond)
 	bond_for_each_slave(bond, slave, iter) {
 		switch (slave->new_link) {
 		case BOND_LINK_NOCHANGE:
+			/* For 802.3ad mode, check current slave speed and
+			 * duplex again in case its port was disabled after
+			 * invalid speed/duplex reporting but recovered before
+			 * link monitoring could make a decision on the actual
+			 * link status
+			 */
+			if (BOND_MODE(bond) == BOND_MODE_8023AD &&
+			    slave->link == BOND_LINK_UP)
+				bond_3ad_adapter_speed_duplex_changed(slave);
 			continue;
 
 		case BOND_LINK_UP:
-- 
2.20.1

[PATCH AUTOSEL 5.2 031/123] net: mvpp2: Don't check for 3 consecutive Idle frames for 10G links

[Sasha Levin]

From: Maxime Chevallier <maxime.chevallier@bootlin.com>

[ Upstream commit bba18318e7d1d5c8b0bbafd65010a0cee3c65608 ]

PPv2's XLGMAC can wait for 3 idle frames before triggering a link up
event. This can cause the link to be stuck low when there's traffic on
the interface, so disable this feature.

Fixes: 4bb043262878 ("net: mvpp2: phylink support")
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
index 50ed1bdb632db..885529701de90 100644
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -4580,9 +4580,9 @@ static void mvpp2_xlg_config(struct mvpp2_port *port, unsigned int mode,
 	else
 		ctrl0 &= ~MVPP22_XLG_CTRL0_RX_FLOW_CTRL_EN;
 
-	ctrl4 &= ~MVPP22_XLG_CTRL4_MACMODSELECT_GMAC;
-	ctrl4 |= MVPP22_XLG_CTRL4_FWD_FC | MVPP22_XLG_CTRL4_FWD_PFC |
-		 MVPP22_XLG_CTRL4_EN_IDLE_CHECK;
+	ctrl4 &= ~(MVPP22_XLG_CTRL4_MACMODSELECT_GMAC |
+		   MVPP22_XLG_CTRL4_EN_IDLE_CHECK);
+	ctrl4 |= MVPP22_XLG_CTRL4_FWD_FC | MVPP22_XLG_CTRL4_FWD_PFC;
 
 	if (old_ctrl0 != ctrl0)
 		writel(ctrl0, port->base + MVPP22_XLG_CTRL0_REG);
-- 
2.20.1

[PATCH AUTOSEL 5.2 032/123] selftests: forwarding: gre_multipath: Enable IPv4 forwarding

[Sasha Levin]

From: Ido Schimmel <idosch@mellanox.com>

[ Upstream commit efa7b79f675da0efafe3f32ba0d6efe916cf4867 ]

The test did not enable IPv4 forwarding during its setup phase, which
causes the test to fail on machines where IPv4 forwarding is disabled.

Fixes: 54818c4c4b93 ("selftests: forwarding: Test multipath tunneling")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Stephen Suryaputra <ssuryaextr@gmail.com>
Tested-by: Stephen Suryaputra <ssuryaextr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 tools/testing/selftests/net/forwarding/gre_multipath.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/testing/selftests/net/forwarding/gre_multipath.sh b/tools/testing/selftests/net/forwarding/gre_multipath.sh
index cca2baa03fb81..37d7297e1cf8a 100755
--- a/tools/testing/selftests/net/forwarding/gre_multipath.sh
+++ b/tools/testing/selftests/net/forwarding/gre_multipath.sh
@@ -187,12 +187,16 @@ setup_prepare()
 	sw1_create
 	sw2_create
 	h2_create
+
+	forwarding_enable
 }
 
 cleanup()
 {
 	pre_cleanup
 
+	forwarding_restore
+
 	h2_destroy
 	sw2_destroy
 	sw1_destroy
-- 
2.20.1

[PATCH AUTOSEL 5.2 033/123] selftests: forwarding: gre_multipath: Fix flower filters

[Sasha Levin]

From: Ido Schimmel <idosch@mellanox.com>

[ Upstream commit 1be79d89b7ae96e004911bd228ce8c2b5cc6415f ]

The TC filters used in the test do not work with veth devices because the
outer Ethertype is 802.1Q and not IPv4. The test passes with mlxsw
netdevs since the hardware always looks at "The first Ethertype that
does not point to either: VLAN, CNTAG or configurable Ethertype".

Fix this by matching on the VLAN ID instead, but on the ingress side.
The reason why this is not performed at egress is explained in the
commit cited below.

Fixes: 541ad323db3a ("selftests: forwarding: gre_multipath: Update next-hop statistics match criteria")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Stephen Suryaputra <ssuryaextr@gmail.com>
Tested-by: Stephen Suryaputra <ssuryaextr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 .../selftests/net/forwarding/gre_multipath.sh | 24 +++++++++----------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/tools/testing/selftests/net/forwarding/gre_multipath.sh b/tools/testing/selftests/net/forwarding/gre_multipath.sh
index 37d7297e1cf8a..a8d8e8b3dc819 100755
--- a/tools/testing/selftests/net/forwarding/gre_multipath.sh
+++ b/tools/testing/selftests/net/forwarding/gre_multipath.sh
@@ -93,18 +93,10 @@ sw1_create()
 	ip route add vrf v$ol1 192.0.2.16/28 \
 	   nexthop dev g1a \
 	   nexthop dev g1b
-
-	tc qdisc add dev $ul1 clsact
-	tc filter add dev $ul1 egress pref 111 prot ipv4 \
-	   flower dst_ip 192.0.2.66 action pass
-	tc filter add dev $ul1 egress pref 222 prot ipv4 \
-	   flower dst_ip 192.0.2.82 action pass
 }
 
 sw1_destroy()
 {
-	tc qdisc del dev $ul1 clsact
-
 	ip route del vrf v$ol1 192.0.2.16/28
 
 	ip route del vrf v$ol1 192.0.2.82/32 via 192.0.2.146
@@ -139,10 +131,18 @@ sw2_create()
 	ip route add vrf v$ol2 192.0.2.0/28 \
 	   nexthop dev g2a \
 	   nexthop dev g2b
+
+	tc qdisc add dev $ul2 clsact
+	tc filter add dev $ul2 ingress pref 111 prot 802.1Q \
+	   flower vlan_id 111 action pass
+	tc filter add dev $ul2 ingress pref 222 prot 802.1Q \
+	   flower vlan_id 222 action pass
 }
 
 sw2_destroy()
 {
+	tc qdisc del dev $ul2 clsact
+
 	ip route del vrf v$ol2 192.0.2.0/28
 
 	ip route del vrf v$ol2 192.0.2.81/32 via 192.0.2.145
@@ -215,15 +215,15 @@ multipath4_test()
 	   nexthop dev g1a weight $weight1 \
 	   nexthop dev g1b weight $weight2
 
-	local t0_111=$(tc_rule_stats_get $ul1 111 egress)
-	local t0_222=$(tc_rule_stats_get $ul1 222 egress)
+	local t0_111=$(tc_rule_stats_get $ul2 111 ingress)
+	local t0_222=$(tc_rule_stats_get $ul2 222 ingress)
 
 	ip vrf exec v$h1 \
 	   $MZ $h1 -q -p 64 -A 192.0.2.1 -B 192.0.2.18 \
 	       -d 1msec -t udp "sp=1024,dp=0-32768"
 
-	local t1_111=$(tc_rule_stats_get $ul1 111 egress)
-	local t1_222=$(tc_rule_stats_get $ul1 222 egress)
+	local t1_111=$(tc_rule_stats_get $ul2 111 ingress)
+	local t1_222=$(tc_rule_stats_get $ul2 222 ingress)
 
 	local d111=$((t1_111 - t0_111))
 	local d222=$((t1_222 - t0_222))
-- 
2.20.1

[PATCH AUTOSEL 5.2 034/123] bpf: fix access to skb_shared_info->gso_segs

[Sasha Levin]

From: Eric Dumazet <edumazet@google.com>

[ Upstream commit 06a22d897d82f12776d44dbf0850f5895469cb2a ]

It is possible we reach bpf_convert_ctx_access() with
si->dst_reg == si->src_reg

Therefore, we need to load BPF_REG_AX before eventually
mangling si->src_reg.

syzbot generated this x86 code :
   3:   55                      push   %rbp
   4:   48 89 e5                mov    %rsp,%rbp
   7:   48 81 ec 00 00 00 00    sub    $0x0,%rsp // Might be avoided ?
   e:   53                      push   %rbx
   f:   41 55                   push   %r13
  11:   41 56                   push   %r14
  13:   41 57                   push   %r15
  15:   6a 00                   pushq  $0x0
  17:   31 c0                   xor    %eax,%eax
  19:   48 8b bf c0 00 00 00    mov    0xc0(%rdi),%rdi
  20:   44 8b 97 bc 00 00 00    mov    0xbc(%rdi),%r10d
  27:   4c 01 d7                add    %r10,%rdi
  2a:   48 0f b7 7f 06          movzwq 0x6(%rdi),%rdi // Crash
  2f:   5b                      pop    %rbx
  30:   41 5f                   pop    %r15
  32:   41 5e                   pop    %r14
  34:   41 5d                   pop    %r13
  36:   5b                      pop    %rbx
  37:   c9                      leaveq
  38:   c3                      retq

Fixes: d9ff286a0f59 ("bpf: allow BPF programs access skb_shared_info->gso_segs field")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/core/filter.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/core/filter.c b/net/core/filter.c
index f681fb772940c..534c310bb0893 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -7325,12 +7325,12 @@ static u32 bpf_convert_ctx_access(enum bpf_access_type type,
 	case offsetof(struct __sk_buff, gso_segs):
 		/* si->dst_reg = skb_shinfo(SKB); */
 #ifdef NET_SKBUFF_DATA_USES_OFFSET
-		*insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, head),
-				      si->dst_reg, si->src_reg,
-				      offsetof(struct sk_buff, head));
 		*insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, end),
 				      BPF_REG_AX, si->src_reg,
 				      offsetof(struct sk_buff, end));
+		*insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, head),
+				      si->dst_reg, si->src_reg,
+				      offsetof(struct sk_buff, head));
 		*insn++ = BPF_ALU64_REG(BPF_ADD, si->dst_reg, BPF_REG_AX);
 #else
 		*insn++ = BPF_LDX_MEM(BPF_FIELD_SIZEOF(struct sk_buff, end),
-- 
2.20.1

[PATCH AUTOSEL 5.2 035/123] selftests/bpf: add another gso_segs access

[Sasha Levin]

From: Eric Dumazet <edumazet@google.com>

[ Upstream commit be69483bf4f3abaaca5d5ba460dbb50239463552 ]

Use BPF_REG_1 for source and destination of gso_segs read,
to exercise "bpf: fix access to skb_shared_info->gso_segs" fix.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Suggested-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 tools/testing/selftests/bpf/verifier/ctx_skb.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/tools/testing/selftests/bpf/verifier/ctx_skb.c b/tools/testing/selftests/bpf/verifier/ctx_skb.c
index b0fda2877119c..d438193804b21 100644
--- a/tools/testing/selftests/bpf/verifier/ctx_skb.c
+++ b/tools/testing/selftests/bpf/verifier/ctx_skb.c
@@ -974,6 +974,17 @@
 	.result = ACCEPT,
 	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
 },
+{
+	"read gso_segs from CGROUP_SKB",
+	.insns = {
+	BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_1,
+		    offsetof(struct __sk_buff, gso_segs)),
+	BPF_MOV64_IMM(BPF_REG_0, 0),
+	BPF_EXIT_INSN(),
+	},
+	.result = ACCEPT,
+	.prog_type = BPF_PROG_TYPE_CGROUP_SKB,
+},
 {
 	"write gso_segs from CGROUP_SKB",
 	.insns = {
-- 
2.20.1

[PATCH AUTOSEL 5.2 036/123] libbpf: fix using uninitialized ioctl results

[Sasha Levin]

From: Ilya Maximets <i.maximets@samsung.com>

[ Upstream commit decb705e01a5d325c9876b9674043cde4b54f0db ]

'channels.max_combined' initialized only on ioctl success and
errno is only valid on ioctl failure.

The code doesn't produce any runtime issues, but makes memory
sanitizers angry:

 Conditional jump or move depends on uninitialised value(s)
    at 0x55C056F: xsk_get_max_queues (xsk.c:336)
    by 0x55C05B2: xsk_create_bpf_maps (xsk.c:354)
    by 0x55C089F: xsk_setup_xdp_prog (xsk.c:447)
    by 0x55C0E57: xsk_socket__create (xsk.c:601)
  Uninitialised value was created by a stack allocation
    at 0x55C04CD: xsk_get_max_queues (xsk.c:318)

Additionally fixed warning on uninitialized bytes in ioctl arguments:

 Syscall param ioctl(SIOCETHTOOL) points to uninitialised byte(s)
    at 0x648D45B: ioctl (in /usr/lib64/libc-2.28.so)
    by 0x55C0546: xsk_get_max_queues (xsk.c:330)
    by 0x55C05B2: xsk_create_bpf_maps (xsk.c:354)
    by 0x55C089F: xsk_setup_xdp_prog (xsk.c:447)
    by 0x55C0E57: xsk_socket__create (xsk.c:601)
  Address 0x1ffefff378 is on thread 1's stack
  in frame #1, created by xsk_get_max_queues (xsk.c:318)
  Uninitialised value was created by a stack allocation
    at 0x55C04CD: xsk_get_max_queues (xsk.c:318)

CC: Magnus Karlsson <magnus.karlsson@intel.com>
Fixes: 1cad07884239 ("libbpf: add support for using AF_XDP sockets")
Signed-off-by: Ilya Maximets <i.maximets@samsung.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 tools/lib/bpf/xsk.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/tools/lib/bpf/xsk.c b/tools/lib/bpf/xsk.c
index ca272c5b67f47..8e03b65830da0 100644
--- a/tools/lib/bpf/xsk.c
+++ b/tools/lib/bpf/xsk.c
@@ -327,15 +327,14 @@ static int xsk_load_xdp_prog(struct xsk_socket *xsk)
 
 static int xsk_get_max_queues(struct xsk_socket *xsk)
 {
-	struct ethtool_channels channels;
-	struct ifreq ifr;
+	struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
+	struct ifreq ifr = {};
 	int fd, err, ret;
 
 	fd = socket(AF_INET, SOCK_DGRAM, 0);
 	if (fd < 0)
 		return -errno;
 
-	channels.cmd = ETHTOOL_GCHANNELS;
 	ifr.ifr_data = (void *)&channels;
 	strncpy(ifr.ifr_name, xsk->ifname, IFNAMSIZ - 1);
 	ifr.ifr_name[IFNAMSIZ - 1] = '\0';
@@ -345,7 +344,7 @@ static int xsk_get_max_queues(struct xsk_socket *xsk)
 		goto out;
 	}
 
-	if (channels.max_combined == 0 || errno == EOPNOTSUPP)
+	if (err || channels.max_combined == 0)
 		/* If the device says it has no channels, then all traffic
 		 * is sent to a single stream, so max queues = 1.
 		 */
-- 
2.20.1

[PATCH AUTOSEL 5.2 037/123] can: dev: call netif_carrier_off() in register_candev()

[Sasha Levin]

From: Rasmus Villemoes <rasmus.villemoes@prevas.dk>

[ Upstream commit c63845609c4700488e5eacd6ab4d06d5d420e5ef ]

CONFIG_CAN_LEDS is deprecated. When trying to use the generic netdev
trigger as suggested, there's a small inconsistency with the link
property: The LED is on initially, stays on when the device is brought
up, and then turns off (as expected) when the device is brought down.

Make sure the LED always reflects the state of the CAN device.

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/can/dev.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c
index b6b93a2d93a59..483d270664cc8 100644
--- a/drivers/net/can/dev.c
+++ b/drivers/net/can/dev.c
@@ -1249,6 +1249,8 @@ int register_candev(struct net_device *dev)
 		return -EINVAL;
 
 	dev->rtnl_link_ops = &can_link_ops;
+	netif_carrier_off(dev);
+
 	return register_netdev(dev);
 }
 EXPORT_SYMBOL_GPL(register_candev);
-- 
2.20.1

[PATCH AUTOSEL 5.2 038/123] can: mcp251x: add error check when wq alloc failed

[Sasha Levin]

From: Weitao Hou <houweitaoo@gmail.com>

[ Upstream commit 375f755899b8fc21196197e02aab26257df26e85 ]

add error check when workqueue alloc failed, and remove redundant code
to make it clear.

Fixes: e0000163e30e ("can: Driver for the Microchip MCP251x SPI CAN controllers")
Signed-off-by: Weitao Hou <houweitaoo@gmail.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/can/spi/mcp251x.c | 49 ++++++++++++++++-------------------
 1 file changed, 22 insertions(+), 27 deletions(-)

diff --git a/drivers/net/can/spi/mcp251x.c b/drivers/net/can/spi/mcp251x.c
index 44e99e3d71348..2aec934fab0cd 100644
--- a/drivers/net/can/spi/mcp251x.c
+++ b/drivers/net/can/spi/mcp251x.c
@@ -664,17 +664,6 @@ static int mcp251x_power_enable(struct regulator *reg, int enable)
 		return regulator_disable(reg);
 }
 
-static void mcp251x_open_clean(struct net_device *net)
-{
-	struct mcp251x_priv *priv = netdev_priv(net);
-	struct spi_device *spi = priv->spi;
-
-	free_irq(spi->irq, priv);
-	mcp251x_hw_sleep(spi);
-	mcp251x_power_enable(priv->transceiver, 0);
-	close_candev(net);
-}
-
 static int mcp251x_stop(struct net_device *net)
 {
 	struct mcp251x_priv *priv = netdev_priv(net);
@@ -940,37 +929,43 @@ static int mcp251x_open(struct net_device *net)
 				   flags | IRQF_ONESHOT, DEVICE_NAME, priv);
 	if (ret) {
 		dev_err(&spi->dev, "failed to acquire irq %d\n", spi->irq);
-		mcp251x_power_enable(priv->transceiver, 0);
-		close_candev(net);
-		goto open_unlock;
+		goto out_close;
 	}
 
 	priv->wq = alloc_workqueue("mcp251x_wq", WQ_FREEZABLE | WQ_MEM_RECLAIM,
 				   0);
+	if (!priv->wq) {
+		ret = -ENOMEM;
+		goto out_clean;
+	}
 	INIT_WORK(&priv->tx_work, mcp251x_tx_work_handler);
 	INIT_WORK(&priv->restart_work, mcp251x_restart_work_handler);
 
 	ret = mcp251x_hw_reset(spi);
-	if (ret) {
-		mcp251x_open_clean(net);
-		goto open_unlock;
-	}
+	if (ret)
+		goto out_free_wq;
 	ret = mcp251x_setup(net, spi);
-	if (ret) {
-		mcp251x_open_clean(net);
-		goto open_unlock;
-	}
+	if (ret)
+		goto out_free_wq;
 	ret = mcp251x_set_normal_mode(spi);
-	if (ret) {
-		mcp251x_open_clean(net);
-		goto open_unlock;
-	}
+	if (ret)
+		goto out_free_wq;
 
 	can_led_event(net, CAN_LED_EVENT_OPEN);
 
 	netif_wake_queue(net);
+	mutex_unlock(&priv->mcp_lock);
 
-open_unlock:
+	return 0;
+
+out_free_wq:
+	destroy_workqueue(priv->wq);
+out_clean:
+	free_irq(spi->irq, priv);
+	mcp251x_hw_sleep(spi);
+out_close:
+	mcp251x_power_enable(priv->transceiver, 0);
+	close_candev(net);
 	mutex_unlock(&priv->mcp_lock);
 	return ret;
 }
-- 
2.20.1

[PATCH AUTOSEL 5.2 039/123] can: gw: Fix error path of cgw_module_init

[Sasha Levin]

From: YueHaibing <yuehaibing@huawei.com>

[ Upstream commit b7a14297f102b6e2ce6f16feffebbb9bde1e9b55 ]

This patch add error path for cgw_module_init to avoid possible crash if
some error occurs.

Fixes: c1aabdf379bc ("can-gw: add netlink based CAN routing")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/can/gw.c | 48 +++++++++++++++++++++++++++++++++---------------
 1 file changed, 33 insertions(+), 15 deletions(-)

diff --git a/net/can/gw.c b/net/can/gw.c
index 5275ddf580bc7..72711053ebe66 100644
--- a/net/can/gw.c
+++ b/net/can/gw.c
@@ -1046,32 +1046,50 @@ static __init int cgw_module_init(void)
 	pr_info("can: netlink gateway (rev " CAN_GW_VERSION ") max_hops=%d\n",
 		max_hops);
 
-	register_pernet_subsys(&cangw_pernet_ops);
+	ret = register_pernet_subsys(&cangw_pernet_ops);
+	if (ret)
+		return ret;
+
+	ret = -ENOMEM;
 	cgw_cache = kmem_cache_create("can_gw", sizeof(struct cgw_job),
 				      0, 0, NULL);
-
 	if (!cgw_cache)
-		return -ENOMEM;
+		goto out_cache_create;
 
 	/* set notifier */
 	notifier.notifier_call = cgw_notifier;
-	register_netdevice_notifier(&notifier);
+	ret = register_netdevice_notifier(&notifier);
+	if (ret)
+		goto out_register_notifier;
 
 	ret = rtnl_register_module(THIS_MODULE, PF_CAN, RTM_GETROUTE,
 				   NULL, cgw_dump_jobs, 0);
-	if (ret) {
-		unregister_netdevice_notifier(&notifier);
-		kmem_cache_destroy(cgw_cache);
-		return -ENOBUFS;
-	}
-
-	/* Only the first call to rtnl_register_module can fail */
-	rtnl_register_module(THIS_MODULE, PF_CAN, RTM_NEWROUTE,
-			     cgw_create_job, NULL, 0);
-	rtnl_register_module(THIS_MODULE, PF_CAN, RTM_DELROUTE,
-			     cgw_remove_job, NULL, 0);
+	if (ret)
+		goto out_rtnl_register1;
+
+	ret = rtnl_register_module(THIS_MODULE, PF_CAN, RTM_NEWROUTE,
+				   cgw_create_job, NULL, 0);
+	if (ret)
+		goto out_rtnl_register2;
+	ret = rtnl_register_module(THIS_MODULE, PF_CAN, RTM_DELROUTE,
+				   cgw_remove_job, NULL, 0);
+	if (ret)
+		goto out_rtnl_register3;
 
 	return 0;
+
+out_rtnl_register3:
+	rtnl_unregister(PF_CAN, RTM_NEWROUTE);
+out_rtnl_register2:
+	rtnl_unregister(PF_CAN, RTM_GETROUTE);
+out_rtnl_register1:
+	unregister_netdevice_notifier(&notifier);
+out_register_notifier:
+	kmem_cache_destroy(cgw_cache);
+out_cache_create:
+	unregister_pernet_subsys(&cangw_pernet_ops);
+
+	return ret;
 }
 
 static __exit void cgw_module_exit(void)
-- 
2.20.1

[PATCH AUTOSEL 5.2 042/123] libbpf: silence GCC8 warning about string truncation

[Sasha Levin]

From: Andrii Nakryiko <andriin@fb.com>

[ Upstream commit cb8ffde5694ae5fffb456eae932aac442aa3a207 ]

Despite a proper NULL-termination after strncpy(..., ..., IFNAMSIZ - 1),
GCC8 still complains about *expected* string truncation:

  xsk.c:330:2: error: 'strncpy' output may be truncated copying 15 bytes
  from a string of length 15 [-Werror=stringop-truncation]
    strncpy(ifr.ifr_name, xsk->ifname, IFNAMSIZ - 1);

This patch gets rid of the issue altogether by using memcpy instead.
There is no performance regression, as strncpy will still copy and fill
all of the bytes anyway.

v1->v2:
- rebase against bpf tree.

Cc: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 tools/lib/bpf/xsk.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/lib/bpf/xsk.c b/tools/lib/bpf/xsk.c
index 8e03b65830da0..fa948c5445ecf 100644
--- a/tools/lib/bpf/xsk.c
+++ b/tools/lib/bpf/xsk.c
@@ -336,7 +336,7 @@ static int xsk_get_max_queues(struct xsk_socket *xsk)
 		return -errno;
 
 	ifr.ifr_data = (void *)&channels;
-	strncpy(ifr.ifr_name, xsk->ifname, IFNAMSIZ - 1);
+	memcpy(ifr.ifr_name, xsk->ifname, IFNAMSIZ - 1);
 	ifr.ifr_name[IFNAMSIZ - 1] = '\0';
 	err = ioctl(fd, SIOCETHTOOL, &ifr);
 	if (err && errno != EOPNOTSUPP) {
@@ -561,7 +561,7 @@ int xsk_socket__create(struct xsk_socket **xsk_ptr, const char *ifname,
 		err = -errno;
 		goto out_socket;
 	}
-	strncpy(xsk->ifname, ifname, IFNAMSIZ - 1);
+	memcpy(xsk->ifname, ifname, IFNAMSIZ - 1);
 	xsk->ifname[IFNAMSIZ - 1] = '\0';
 
 	err = xsk_set_xdp_socket_config(&xsk->config, usr_config);
-- 
2.20.1

[PATCH AUTOSEL 5.2 043/123] st21nfca_connectivity_event_received: null check the allocation

[Sasha Levin]

From: Navid Emamdoost <navid.emamdoost@gmail.com>

[ Upstream commit 9891d06836e67324c9e9c4675ed90fc8b8110034 ]

devm_kzalloc may fail and return null. So the null check is needed.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/nfc/st21nfca/se.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/nfc/st21nfca/se.c b/drivers/nfc/st21nfca/se.c
index 06fc542fd1987..6586378cacb05 100644
--- a/drivers/nfc/st21nfca/se.c
+++ b/drivers/nfc/st21nfca/se.c
@@ -317,6 +317,8 @@ int st21nfca_connectivity_event_received(struct nfc_hci_dev *hdev, u8 host,
 
 		transaction = (struct nfc_evt_transaction *)devm_kzalloc(dev,
 						   skb->len - 2, GFP_KERNEL);
+		if (!transaction)
+			return -ENOMEM;
 
 		transaction->aid_len = skb->data[1];
 		memcpy(transaction->aid, &skb->data[2],
-- 
2.20.1

[PATCH AUTOSEL 5.2 044/123] st_nci_hci_connectivity_event_received: null check the allocation

[Sasha Levin]

From: Navid Emamdoost <navid.emamdoost@gmail.com>

[ Upstream commit 3008e06fdf0973770370f97d5f1fba3701d8281d ]

devm_kzalloc may fail and return NULL. So the null check is needed.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/nfc/st-nci/se.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/nfc/st-nci/se.c b/drivers/nfc/st-nci/se.c
index c3e10b6ab3a4d..f25f1ec5f9e97 100644
--- a/drivers/nfc/st-nci/se.c
+++ b/drivers/nfc/st-nci/se.c
@@ -333,6 +333,8 @@ static int st_nci_hci_connectivity_event_received(struct nci_dev *ndev,
 
 		transaction = (struct nfc_evt_transaction *)devm_kzalloc(dev,
 					    skb->len - 2, GFP_KERNEL);
+		if (!transaction)
+			return -ENOMEM;
 
 		transaction->aid_len = skb->data[1];
 		memcpy(transaction->aid, &skb->data[2], transaction->aid_len);
-- 
2.20.1

[PATCH AUTOSEL 5.2 045/123] {nl,mac}80211: fix interface combinations on crypto controlled devices

[Sasha Levin]

From: Manikanta Pubbisetty <mpubbise@codeaurora.org>

[ Upstream commit e6f4051123fd33901e9655a675b22aefcdc5d277 ]

Commit 33d915d9e8ce ("{nl,mac}80211: allow 4addr AP operation on
crypto controlled devices") has introduced a change which allows
4addr operation on crypto controlled devices (ex: ath10k). This
change has inadvertently impacted the interface combinations logic
on such devices.

General rule is that software interfaces like AP/VLAN should not be
listed under supported interface combinations and should not be
considered during validation of these combinations; because of the
aforementioned change, AP/VLAN interfaces(if present) will be checked
against interfaces supported by the device and blocks valid interface
combinations.

Consider a case where an AP and AP/VLAN are up and running; when a
second AP device is brought up on the same physical device, this AP
will be checked against the AP/VLAN interface (which will not be
part of supported interface combinations of the device) and blocks
second AP to come up.

Add a new API cfg80211_iftype_allowed() to fix the problem, this
API works for all devices with/without SW crypto control.

Signed-off-by: Manikanta Pubbisetty <mpubbise@codeaurora.org>
Fixes: 33d915d9e8ce ("{nl,mac}80211: allow 4addr AP operation on crypto controlled devices")
Link: https://lore.kernel.org/r/1563779690-9716-1-git-send-email-mpubbise@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/net/cfg80211.h | 15 +++++++++++++++
 net/mac80211/util.c    |  7 +++----
 net/wireless/core.c    |  6 ++----
 net/wireless/nl80211.c |  4 +---
 net/wireless/util.c    | 27 +++++++++++++++++++++++++--
 5 files changed, 46 insertions(+), 13 deletions(-)

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 8fb5be3ca0ca8..8b13bd05befac 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -7254,6 +7254,21 @@ void cfg80211_pmsr_complete(struct wireless_dev *wdev,
 			    struct cfg80211_pmsr_request *req,
 			    gfp_t gfp);
 
+/**
+ * cfg80211_iftype_allowed - check whether the interface can be allowed
+ * @wiphy: the wiphy
+ * @iftype: interface type
+ * @is_4addr: use_4addr flag, must be '0' when check_swif is '1'
+ * @check_swif: check iftype against software interfaces
+ *
+ * Check whether the interface is allowed to operate; additionally, this API
+ * can be used to check iftype against the software interfaces when
+ * check_swif is '1'.
+ */
+bool cfg80211_iftype_allowed(struct wiphy *wiphy, enum nl80211_iftype iftype,
+			     bool is_4addr, u8 check_swif);
+
+
 /* Logging, debugging and troubleshooting/diagnostic helpers. */
 
 /* wiphy_printk helpers, similar to dev_printk */
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 1b224fa27367f..ad1e58184c4e4 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -3796,9 +3796,7 @@ int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
 	}
 
 	/* Always allow software iftypes */
-	if (local->hw.wiphy->software_iftypes & BIT(iftype) ||
-	    (iftype == NL80211_IFTYPE_AP_VLAN &&
-	     local->hw.wiphy->flags & WIPHY_FLAG_4ADDR_AP)) {
+	if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
 		if (radar_detect)
 			return -EINVAL;
 		return 0;
@@ -3833,7 +3831,8 @@ int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
 
 		if (sdata_iter == sdata ||
 		    !ieee80211_sdata_running(sdata_iter) ||
-		    local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype))
+		    cfg80211_iftype_allowed(local->hw.wiphy,
+					    wdev_iter->iftype, 0, 1))
 			continue;
 
 		params.iftype_num[wdev_iter->iftype]++;
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 53ad3dbb76fe5..ed24a0b071c33 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -1397,10 +1397,8 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
 		}
 		break;
 	case NETDEV_PRE_UP:
-		if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype)) &&
-		    !(wdev->iftype == NL80211_IFTYPE_AP_VLAN &&
-		      rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP &&
-		      wdev->use_4addr))
+		if (!cfg80211_iftype_allowed(wdev->wiphy, wdev->iftype,
+					     wdev->use_4addr, 0))
 			return notifier_from_errno(-EOPNOTSUPP);
 
 		if (rfkill_blocked(rdev->rfkill))
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 520d437aa8d15..88a1de9def115 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -3481,9 +3481,7 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
 			return err;
 	}
 
-	if (!(rdev->wiphy.interface_modes & (1 << type)) &&
-	    !(type == NL80211_IFTYPE_AP_VLAN && params.use_4addr &&
-	      rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP))
+	if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
 		return -EOPNOTSUPP;
 
 	err = nl80211_parse_mon_options(rdev, type, info, &params);
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 1c39d6a2e8501..d0e35b7b9e350 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -1697,7 +1697,7 @@ int cfg80211_iter_combinations(struct wiphy *wiphy,
 	for (iftype = 0; iftype < NUM_NL80211_IFTYPES; iftype++) {
 		num_interfaces += params->iftype_num[iftype];
 		if (params->iftype_num[iftype] > 0 &&
-		    !(wiphy->software_iftypes & BIT(iftype)))
+		    !cfg80211_iftype_allowed(wiphy, iftype, 0, 1))
 			used_iftypes |= BIT(iftype);
 	}
 
@@ -1719,7 +1719,7 @@ int cfg80211_iter_combinations(struct wiphy *wiphy,
 			return -ENOMEM;
 
 		for (iftype = 0; iftype < NUM_NL80211_IFTYPES; iftype++) {
-			if (wiphy->software_iftypes & BIT(iftype))
+			if (cfg80211_iftype_allowed(wiphy, iftype, 0, 1))
 				continue;
 			for (j = 0; j < c->n_limits; j++) {
 				all_iftypes |= limits[j].types;
@@ -2072,3 +2072,26 @@ int ieee80211_get_vht_max_nss(struct ieee80211_vht_cap *cap,
 	return max_vht_nss;
 }
 EXPORT_SYMBOL(ieee80211_get_vht_max_nss);
+
+bool cfg80211_iftype_allowed(struct wiphy *wiphy, enum nl80211_iftype iftype,
+			     bool is_4addr, u8 check_swif)
+
+{
+	bool is_vlan = iftype == NL80211_IFTYPE_AP_VLAN;
+
+	switch (check_swif) {
+	case 0:
+		if (is_vlan && is_4addr)
+			return wiphy->flags & WIPHY_FLAG_4ADDR_AP;
+		return wiphy->interface_modes & BIT(iftype);
+	case 1:
+		if (!(wiphy->software_iftypes & BIT(iftype)) && is_vlan)
+			return wiphy->flags & WIPHY_FLAG_4ADDR_AP;
+		return wiphy->software_iftypes & BIT(iftype);
+	default:
+		break;
+	}
+
+	return false;
+}
+EXPORT_SYMBOL(cfg80211_iftype_allowed);
-- 
2.20.1

[PATCH AUTOSEL 5.2 049/123] net: usb: qmi_wwan: Add the BroadMobi BM818 card

[Sasha Levin]

From: Bob Ham <bob.ham@puri.sm>

[ Upstream commit 9a07406b00cdc6ec689dc142540739575c717f3c ]

The BroadMobi BM818 M.2 card uses the QMI protocol

Signed-off-by: Bob Ham <bob.ham@puri.sm>
Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/usb/qmi_wwan.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
index 8b4ad10cf9402..26c5207466afc 100644
--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c
@@ -1294,6 +1294,7 @@ static const struct usb_device_id products[] = {
 	{QMI_FIXED_INTF(0x2001, 0x7e35, 4)},	/* D-Link DWM-222 */
 	{QMI_FIXED_INTF(0x2020, 0x2031, 4)},	/* Olicard 600 */
 	{QMI_FIXED_INTF(0x2020, 0x2033, 4)},	/* BroadMobi BM806U */
+	{QMI_FIXED_INTF(0x2020, 0x2060, 4)},	/* BroadMobi BM818 */
 	{QMI_FIXED_INTF(0x0f3d, 0x68a2, 8)},    /* Sierra Wireless MC7700 */
 	{QMI_FIXED_INTF(0x114f, 0x68a2, 8)},    /* Sierra Wireless MC7750 */
 	{QMI_FIXED_INTF(0x1199, 0x68a2, 8)},	/* Sierra Wireless MC7710 in QMI mode */
-- 
2.20.1

[PATCH AUTOSEL 5.2 050/123] qed: RDMA - Fix the hw_ver returned in device attributes

[Sasha Levin]

From: Michal Kalderon <michal.kalderon@marvell.com>

[ Upstream commit 81af04b432fdfabcdbd2c06be2ee647e3ca41a22 ]

The hw_ver field was initialized to zero. Return the chip revision.
This is relevant for rdma driver.

Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/qlogic/qed/qed_rdma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_rdma.c b/drivers/net/ethernet/qlogic/qed/qed_rdma.c
index 13802b825d65a..909422d939033 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_rdma.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_rdma.c
@@ -442,7 +442,7 @@ static void qed_rdma_init_devinfo(struct qed_hwfn *p_hwfn,
 	/* Vendor specific information */
 	dev->vendor_id = cdev->vendor_id;
 	dev->vendor_part_id = cdev->device_id;
-	dev->hw_ver = 0;
+	dev->hw_ver = cdev->chip_rev;
 	dev->fw_ver = (FW_MAJOR_VERSION << 24) | (FW_MINOR_VERSION << 16) |
 		      (FW_REVISION_VERSION << 8) | (FW_ENGINEERING_VERSION);
 
-- 
2.20.1

[PATCH AUTOSEL 5.2 051/123] isdn: mISDN: hfcsusb: Fix possible null-pointer dereferences in start_isoc_chain()

[Sasha Levin]

From: Jia-Ju Bai <baijiaju1990@gmail.com>

[ Upstream commit a0d57a552b836206ad7705a1060e6e1ce5a38203 ]

In start_isoc_chain(), usb_alloc_urb() on line 1392 may fail
and return NULL. At this time, fifo->iso[i].urb is assigned to NULL.

Then, fifo->iso[i].urb is used at some places, such as:
LINE 1405:    fill_isoc_urb(fifo->iso[i].urb, ...)
                  urb->number_of_packets = num_packets;
                  urb->transfer_flags = URB_ISO_ASAP;
                  urb->actual_length = 0;
                  urb->interval = interval;
LINE 1416:    fifo->iso[i].urb->...
LINE 1419:    fifo->iso[i].urb->...

Thus, possible null-pointer dereferences may occur.

To fix these bugs, "continue" is added to avoid using fifo->iso[i].urb
when it is NULL.

These bugs are found by a static analysis tool STCheck written by us.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/isdn/hardware/mISDN/hfcsusb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/isdn/hardware/mISDN/hfcsusb.c b/drivers/isdn/hardware/mISDN/hfcsusb.c
index 0e224232f7464..8fb7c5dea07fc 100644
--- a/drivers/isdn/hardware/mISDN/hfcsusb.c
+++ b/drivers/isdn/hardware/mISDN/hfcsusb.c
@@ -1394,6 +1394,7 @@ start_isoc_chain(struct usb_fifo *fifo, int num_packets_per_urb,
 				printk(KERN_DEBUG
 				       "%s: %s: alloc urb for fifo %i failed",
 				       hw->name, __func__, fifo->fifonum);
+				continue;
 			}
 			fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo;
 			fifo->iso[i].indx = i;
-- 
2.20.1

[PATCH AUTOSEL 5.2 053/123] mac80211_hwsim: Fix possible null-pointer dereferences in hwsim_dump_radio_nl()

[Sasha Levin]

From: Jia-Ju Bai <baijiaju1990@gmail.com>

[ Upstream commit b55f3b841099e641bdb2701d361a4c304e2dbd6f ]

In hwsim_dump_radio_nl(), when genlmsg_put() on line 3617 fails, hdr is
assigned to NULL. Then hdr is used on lines 3622 and 3623:
    genl_dump_check_consistent(cb, hdr);
    genlmsg_end(skb, hdr);

Thus, possible null-pointer dereferences may occur.

To fix these bugs, hdr is used here when it is not NULL.

This bug is found by a static analysis tool STCheck written by us.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Link: https://lore.kernel.org/r/20190729082332.28895-1-baijiaju1990@gmail.com
[put braces on all branches]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/mac80211_hwsim.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 1c699a9fa8661..faec05ab42754 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -3615,10 +3615,12 @@ static int hwsim_dump_radio_nl(struct sk_buff *skb,
 		hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid,
 				  cb->nlh->nlmsg_seq, &hwsim_genl_family,
 				  NLM_F_MULTI, HWSIM_CMD_GET_RADIO);
-		if (!hdr)
+		if (hdr) {
+			genl_dump_check_consistent(cb, hdr);
+			genlmsg_end(skb, hdr);
+		} else {
 			res = -EMSGSIZE;
-		genl_dump_check_consistent(cb, hdr);
-		genlmsg_end(skb, hdr);
+		}
 	}
 
 done:
-- 
2.20.1

[PATCH AUTOSEL 5.2 054/123] net: stmmac: manage errors returned by of_get_mac_address()

[Sasha Levin]

From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

[ Upstream commit 195b2919ccd7ffcaf6b6bbcb39444a53ab8308c7 ]

Commit d01f449c008a ("of_net: add NVMEM support to of_get_mac_address")
added support for reading the MAC address from an nvmem-cell. This
required changing the logic to return an error pointer upon failure.

If stmmac is loaded before the nvmem provider driver then
of_get_mac_address() return an error pointer with -EPROBE_DEFER.

Propagate this error so the stmmac driver will be probed again after the
nvmem provider driver is loaded.
Default to a random generated MAC address in case of any other error,
instead of using the error pointer as MAC address.

Fixes: d01f449c008a ("of_net: add NVMEM support to of_get_mac_address")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 0f0f4b31eb7ec..9b5218a8c15bc 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -385,6 +385,13 @@ stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
 		return ERR_PTR(-ENOMEM);
 
 	*mac = of_get_mac_address(np);
+	if (IS_ERR(*mac)) {
+		if (PTR_ERR(*mac) == -EPROBE_DEFER)
+			return ERR_CAST(*mac);
+
+		*mac = NULL;
+	}
+
 	plat->interface = of_get_phy_mode(np);
 
 	/* Get max speed of operation from device tree */
-- 
2.20.1

[PATCH AUTOSEL 5.2 055/123] netfilter: ipset: Actually allow destination MAC address for hash:ip,mac sets too

[Sasha Levin]

From: Stefano Brivio <sbrivio@redhat.com>

[ Upstream commit b89d15480d0cacacae1a0fe0b3da01b529f2914f ]

In commit 8cc4ccf58379 ("ipset: Allow matching on destination MAC address
for mac and ipmac sets"), ipset.git commit 1543514c46a7, I removed the
KADT check that prevents matching on destination MAC addresses for
hash:mac sets, but forgot to remove the same check for hash:ip,mac set.

Drop this check: functionality is now commented in man pages and there's
no reason to restrict to source MAC address matching anymore.

Reported-by: Chen Yi <yiche@redhat.com>
Fixes: 8cc4ccf58379 ("ipset: Allow matching on destination MAC address for mac and ipmac sets")
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: Jozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/netfilter/ipset/ip_set_hash_ipmac.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/net/netfilter/ipset/ip_set_hash_ipmac.c b/net/netfilter/ipset/ip_set_hash_ipmac.c
index faf59b6a998fe..eb14434083203 100644
--- a/net/netfilter/ipset/ip_set_hash_ipmac.c
+++ b/net/netfilter/ipset/ip_set_hash_ipmac.c
@@ -89,10 +89,6 @@ hash_ipmac4_kadt(struct ip_set *set, const struct sk_buff *skb,
 	struct hash_ipmac4_elem e = { .ip = 0, { .foo[0] = 0, .foo[1] = 0 } };
 	struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
 
-	 /* MAC can be src only */
-	if (!(opt->flags & IPSET_DIM_TWO_SRC))
-		return 0;
-
 	if (skb_mac_header(skb) < skb->head ||
 	    (skb_mac_header(skb) + ETH_HLEN) > skb->data)
 		return -EINVAL;
-- 
2.20.1

[PATCH AUTOSEL 5.2 056/123] netfilter: ipset: Copy the right MAC address in bitmap:ip,mac and hash:ip,mac sets

[Sasha Levin]

From: Stefano Brivio <sbrivio@redhat.com>

[ Upstream commit 1b4a75108d5bc153daf965d334e77e8e94534f96 ]

In commit 8cc4ccf58379 ("ipset: Allow matching on destination MAC address
for mac and ipmac sets"), ipset.git commit 1543514c46a7, I added to the
KADT functions for sets matching on MAC addreses the copy of source or
destination MAC address depending on the configured match.

This was done correctly for hash:mac, but for hash:ip,mac and
bitmap:ip,mac, copying and pasting the same code block presents an
obvious problem: in these two set types, the MAC address is the second
dimension, not the first one, and we are actually selecting the MAC
address depending on whether the first dimension (IP address) specifies
source or destination.

Fix this by checking for the IPSET_DIM_TWO_SRC flag in option flags.

This way, mixing source and destination matches for the two dimensions
of ip,mac set types works as expected. With this setup:

  ip netns add A
  ip link add veth1 type veth peer name veth2 netns A
  ip addr add 192.0.2.1/24 dev veth1
  ip -net A addr add 192.0.2.2/24 dev veth2
  ip link set veth1 up
  ip -net A link set veth2 up

  dst=$(ip netns exec A cat /sys/class/net/veth2/address)

  ip netns exec A ipset create test_bitmap bitmap:ip,mac range 192.0.0.0/16
  ip netns exec A ipset add test_bitmap 192.0.2.1,${dst}
  ip netns exec A iptables -A INPUT -m set ! --match-set test_bitmap src,dst -j DROP

  ip netns exec A ipset create test_hash hash:ip,mac
  ip netns exec A ipset add test_hash 192.0.2.1,${dst}
  ip netns exec A iptables -A INPUT -m set ! --match-set test_hash src,dst -j DROP

ipset correctly matches a test packet:

  # ping -c1 192.0.2.2 >/dev/null
  # echo $?
  0

Reported-by: Chen Yi <yiche@redhat.com>
Fixes: 8cc4ccf58379 ("ipset: Allow matching on destination MAC address for mac and ipmac sets")
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: Jozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/netfilter/ipset/ip_set_bitmap_ipmac.c | 2 +-
 net/netfilter/ipset/ip_set_hash_ipmac.c   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/netfilter/ipset/ip_set_bitmap_ipmac.c b/net/netfilter/ipset/ip_set_bitmap_ipmac.c
index b73c37b3a791f..cfe7b556775f1 100644
--- a/net/netfilter/ipset/ip_set_bitmap_ipmac.c
+++ b/net/netfilter/ipset/ip_set_bitmap_ipmac.c
@@ -227,7 +227,7 @@ bitmap_ipmac_kadt(struct ip_set *set, const struct sk_buff *skb,
 
 	e.id = ip_to_id(map, ip);
 
-	if (opt->flags & IPSET_DIM_ONE_SRC)
+	if (opt->flags & IPSET_DIM_TWO_SRC)
 		ether_addr_copy(e.ether, eth_hdr(skb)->h_source);
 	else
 		ether_addr_copy(e.ether, eth_hdr(skb)->h_dest);
diff --git a/net/netfilter/ipset/ip_set_hash_ipmac.c b/net/netfilter/ipset/ip_set_hash_ipmac.c
index eb14434083203..24d8f4df4230c 100644
--- a/net/netfilter/ipset/ip_set_hash_ipmac.c
+++ b/net/netfilter/ipset/ip_set_hash_ipmac.c
@@ -93,7 +93,7 @@ hash_ipmac4_kadt(struct ip_set *set, const struct sk_buff *skb,
 	    (skb_mac_header(skb) + ETH_HLEN) > skb->data)
 		return -EINVAL;
 
-	if (opt->flags & IPSET_DIM_ONE_SRC)
+	if (opt->flags & IPSET_DIM_TWO_SRC)
 		ether_addr_copy(e.ether, eth_hdr(skb)->h_source);
 	else
 		ether_addr_copy(e.ether, eth_hdr(skb)->h_dest);
-- 
2.20.1

[PATCH AUTOSEL 5.2 057/123] netfilter: ipset: Fix rename concurrency with listing

[Sasha Levin]

From: Jozsef Kadlecsik <kadlec@netfilter.org>

[ Upstream commit 6c1f7e2c1b96ab9b09ac97c4df2bd9dc327206f6 ]

Shijie Luo reported that when stress-testing ipset with multiple concurrent
create, rename, flush, list, destroy commands, it can result

ipset <version>: Broken LIST kernel message: missing DATA part!

error messages and broken list results. The problem was the rename operation
was not properly handled with respect of listing. The patch fixes the issue.

Reported-by: Shijie Luo <luoshijie1@huawei.com>
Signed-off-by: Jozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/netfilter/ipset/ip_set_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/netfilter/ipset/ip_set_core.c b/net/netfilter/ipset/ip_set_core.c
index 16afa0df4004d..e103c875383a5 100644
--- a/net/netfilter/ipset/ip_set_core.c
+++ b/net/netfilter/ipset/ip_set_core.c
@@ -1161,7 +1161,7 @@ static int ip_set_rename(struct net *net, struct sock *ctnl,
 		return -ENOENT;
 
 	write_lock_bh(&ip_set_ref_lock);
-	if (set->ref != 0) {
+	if (set->ref != 0 || set->ref_netlink != 0) {
 		ret = -IPSET_ERR_REFERENCED;
 		goto out;
 	}
-- 
2.20.1

[PATCH AUTOSEL 5.2 058/123] netfilter: ebtables: also count base chain policies

[Sasha Levin]

From: Florian Westphal <fw@strlen.de>

[ Upstream commit 3b48300d5cc7c7bed63fddb006c4046549ed4aec ]

ebtables doesn't include the base chain policies in the rule count,
so we need to add them manually when we call into the x_tables core
to allocate space for the comapt offset table.

This lead syzbot to trigger:
WARNING: CPU: 1 PID: 9012 at net/netfilter/x_tables.c:649
xt_compat_add_offset.cold+0x11/0x36 net/netfilter/x_tables.c:649

Reported-by: syzbot+276ddebab3382bbf72db@syzkaller.appspotmail.com
Fixes: 2035f3ff8eaa ("netfilter: ebtables: compat: un-break 32bit setsockopt when no rules are present")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/bridge/netfilter/ebtables.c | 28 +++++++++++++++++-----------
 1 file changed, 17 insertions(+), 11 deletions(-)

diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index fd84b48e48b57..c8177a89f52c3 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -1770,20 +1770,28 @@ static int compat_calc_entry(const struct ebt_entry *e,
 	return 0;
 }
 
+static int ebt_compat_init_offsets(unsigned int number)
+{
+	if (number > INT_MAX)
+		return -EINVAL;
+
+	/* also count the base chain policies */
+	number += NF_BR_NUMHOOKS;
+
+	return xt_compat_init_offsets(NFPROTO_BRIDGE, number);
+}
 
 static int compat_table_info(const struct ebt_table_info *info,
 			     struct compat_ebt_replace *newinfo)
 {
 	unsigned int size = info->entries_size;
 	const void *entries = info->entries;
+	int ret;
 
 	newinfo->entries_size = size;
-	if (info->nentries) {
-		int ret = xt_compat_init_offsets(NFPROTO_BRIDGE,
-						 info->nentries);
-		if (ret)
-			return ret;
-	}
+	ret = ebt_compat_init_offsets(info->nentries);
+	if (ret)
+		return ret;
 
 	return EBT_ENTRY_ITERATE(entries, size, compat_calc_entry, info,
 							entries, newinfo);
@@ -2234,11 +2242,9 @@ static int compat_do_replace(struct net *net, void __user *user,
 
 	xt_compat_lock(NFPROTO_BRIDGE);
 
-	if (tmp.nentries) {
-		ret = xt_compat_init_offsets(NFPROTO_BRIDGE, tmp.nentries);
-		if (ret < 0)
-			goto out_unlock;
-	}
+	ret = ebt_compat_init_offsets(tmp.nentries);
+	if (ret < 0)
+		goto out_unlock;
 
 	ret = compat_copy_entries(entries_tmp, tmp.entries_size, &state);
 	if (ret < 0)
-- 
2.20.1

[PATCH AUTOSEL 5.2 059/123] rxrpc: Fix potential deadlock

[Sasha Levin]

From: David Howells <dhowells@redhat.com>

[ Upstream commit 60034d3d146b11922ab1db613bce062dddc0327a ]

There is a potential deadlock in rxrpc_peer_keepalive_dispatch() whereby
rxrpc_put_peer() is called with the peer_hash_lock held, but if it reduces
the peer's refcount to 0, rxrpc_put_peer() calls __rxrpc_put_peer() - which
the tries to take the already held lock.

Fix this by providing a version of rxrpc_put_peer() that can be called in
situations where the lock is already held.

The bug may produce the following lockdep report:

============================================
WARNING: possible recursive locking detected
5.2.0-next-20190718 #41 Not tainted
--------------------------------------------
kworker/0:3/21678 is trying to acquire lock:
00000000aa5eecdf (&(&rxnet->peer_hash_lock)->rlock){+.-.}, at: spin_lock_bh
/./include/linux/spinlock.h:343 [inline]
00000000aa5eecdf (&(&rxnet->peer_hash_lock)->rlock){+.-.}, at:
__rxrpc_put_peer /net/rxrpc/peer_object.c:415 [inline]
00000000aa5eecdf (&(&rxnet->peer_hash_lock)->rlock){+.-.}, at:
rxrpc_put_peer+0x2d3/0x6a0 /net/rxrpc/peer_object.c:435

but task is already holding lock:
00000000aa5eecdf (&(&rxnet->peer_hash_lock)->rlock){+.-.}, at: spin_lock_bh
/./include/linux/spinlock.h:343 [inline]
00000000aa5eecdf (&(&rxnet->peer_hash_lock)->rlock){+.-.}, at:
rxrpc_peer_keepalive_dispatch /net/rxrpc/peer_event.c:378 [inline]
00000000aa5eecdf (&(&rxnet->peer_hash_lock)->rlock){+.-.}, at:
rxrpc_peer_keepalive_worker+0x6b3/0xd02 /net/rxrpc/peer_event.c:430

Fixes: 330bdcfadcee ("rxrpc: Fix the keepalive generator [ver #2]")
Reported-by: syzbot+72af434e4b3417318f84@syzkaller.appspotmail.com
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Marc Dionne <marc.dionne@auristor.com>
Reviewed-by: Jeffrey Altman <jaltman@auristor.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/rxrpc/ar-internal.h |  1 +
 net/rxrpc/peer_event.c  |  2 +-
 net/rxrpc/peer_object.c | 18 ++++++++++++++++++
 3 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h
index 80335b4ee4fd6..822f45386e311 100644
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -1061,6 +1061,7 @@ void rxrpc_destroy_all_peers(struct rxrpc_net *);
 struct rxrpc_peer *rxrpc_get_peer(struct rxrpc_peer *);
 struct rxrpc_peer *rxrpc_get_peer_maybe(struct rxrpc_peer *);
 void rxrpc_put_peer(struct rxrpc_peer *);
+void rxrpc_put_peer_locked(struct rxrpc_peer *);
 
 /*
  * proc.c
diff --git a/net/rxrpc/peer_event.c b/net/rxrpc/peer_event.c
index 9f2f45c09e583..7666ec72d37e5 100644
--- a/net/rxrpc/peer_event.c
+++ b/net/rxrpc/peer_event.c
@@ -378,7 +378,7 @@ static void rxrpc_peer_keepalive_dispatch(struct rxrpc_net *rxnet,
 		spin_lock_bh(&rxnet->peer_hash_lock);
 		list_add_tail(&peer->keepalive_link,
 			      &rxnet->peer_keepalive[slot & mask]);
-		rxrpc_put_peer(peer);
+		rxrpc_put_peer_locked(peer);
 	}
 
 	spin_unlock_bh(&rxnet->peer_hash_lock);
diff --git a/net/rxrpc/peer_object.c b/net/rxrpc/peer_object.c
index 9d3ce81cf8ae8..9c3ac96f71cbf 100644
--- a/net/rxrpc/peer_object.c
+++ b/net/rxrpc/peer_object.c
@@ -436,6 +436,24 @@ void rxrpc_put_peer(struct rxrpc_peer *peer)
 	}
 }
 
+/*
+ * Drop a ref on a peer record where the caller already holds the
+ * peer_hash_lock.
+ */
+void rxrpc_put_peer_locked(struct rxrpc_peer *peer)
+{
+	const void *here = __builtin_return_address(0);
+	int n;
+
+	n = atomic_dec_return(&peer->usage);
+	trace_rxrpc_peer(peer, rxrpc_peer_put, n, here);
+	if (n == 0) {
+		hash_del_rcu(&peer->hash_link);
+		list_del_init(&peer->keepalive_link);
+		kfree_rcu(peer, rcu);
+	}
+}
+
 /*
  * Make sure all peer records have been discarded.
  */
-- 
2.20.1

[PATCH AUTOSEL 5.2 060/123] rxrpc: Fix the lack of notification when sendmsg() fails on a DATA packet

[Sasha Levin]

From: David Howells <dhowells@redhat.com>

[ Upstream commit c69565ee6681e151e2bb80502930a16e04b553d1 ]

Fix the fact that a notification isn't sent to the recvmsg side to indicate
a call failed when sendmsg() fails to transmit a DATA packet with the error
ENETUNREACH, EHOSTUNREACH or ECONNREFUSED.

Without this notification, the afs client just sits there waiting for the
call to complete in some manner (which it's not now going to do), which
also pins the rxrpc call in place.

This can be seen if the client has a scope-level IPv6 address, but not a
global-level IPv6 address, and we try and transmit an operation to a
server's IPv6 address.

Looking in /proc/net/rxrpc/calls shows completed calls just sat there with
an abort code of RX_USER_ABORT and an error code of -ENETUNREACH.

Fixes: c54e43d752c7 ("rxrpc: Fix missing start of call timeout")
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Marc Dionne <marc.dionne@auristor.com>
Reviewed-by: Jeffrey Altman <jaltman@auristor.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/rxrpc/sendmsg.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/rxrpc/sendmsg.c b/net/rxrpc/sendmsg.c
index 5d3f33ce6d410..bae14438f8691 100644
--- a/net/rxrpc/sendmsg.c
+++ b/net/rxrpc/sendmsg.c
@@ -226,6 +226,7 @@ static int rxrpc_queue_packet(struct rxrpc_sock *rx, struct rxrpc_call *call,
 			rxrpc_set_call_completion(call,
 						  RXRPC_CALL_LOCAL_ERROR,
 						  0, ret);
+			rxrpc_notify_socket(call);
 			goto out;
 		}
 		_debug("need instant resend %d", ret);
-- 
2.20.1

[PATCH AUTOSEL 5.2 062/123] iwlwifi: mvm: avoid races in rate init and rate perform

[Sasha Levin]

From: Mordechay Goodstein <mordechay.goodstein@intel.com>

[ Upstream commit 0f8084cdc1f9d4a6693ef4168167febb0918c6f6 ]

Rate perform uses the lq_sta table to calculate the next rate to scale
while rate init resets the same table,

Rate perform is done in soft irq context in parallel to rate init
that can be called in case we are doing changes like AP changes BW
or moving state for auth to assoc.

Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/intel/iwlwifi/mvm/rs.c  | 42 ++++++++++++++++++--
 drivers/net/wireless/intel/iwlwifi/mvm/rs.h  |  7 +++-
 drivers/net/wireless/intel/iwlwifi/mvm/sta.c |  6 +++
 drivers/net/wireless/intel/iwlwifi/mvm/sta.h |  1 +
 4 files changed, 51 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rs.c b/drivers/net/wireless/intel/iwlwifi/mvm/rs.c
index 63fdb4e68e9d7..836541caa3167 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rs.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rs.c
@@ -1197,6 +1197,27 @@ static u8 rs_get_tid(struct ieee80211_hdr *hdr)
 	return tid;
 }
 
+void iwl_mvm_rs_init_wk(struct work_struct *wk)
+{
+	struct iwl_mvm_sta *mvmsta = container_of(wk, struct iwl_mvm_sta,
+						  rs_init_wk);
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
+	struct ieee80211_sta *sta;
+
+	rcu_read_lock();
+
+	sta = rcu_dereference(mvmvif->mvm->fw_id_to_mac_id[mvmsta->sta_id]);
+	if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
+		rcu_read_unlock();
+		return;
+	}
+
+	iwl_mvm_rs_rate_init(mvmvif->mvm, sta, mvmvif->phy_ctxt->channel->band,
+			     true);
+
+	rcu_read_unlock();
+}
+
 void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 			  int tid, struct ieee80211_tx_info *info, bool ndp)
 {
@@ -1269,7 +1290,7 @@ void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 		       (unsigned long)(lq_sta->last_tx +
 				       (IWL_MVM_RS_IDLE_TIMEOUT * HZ)))) {
 		IWL_DEBUG_RATE(mvm, "Tx idle for too long. reinit rs\n");
-		iwl_mvm_rs_rate_init(mvm, sta, info->band, true);
+		schedule_work(&mvmsta->rs_init_wk);
 		return;
 	}
 	lq_sta->last_tx = jiffies;
@@ -1442,16 +1463,24 @@ static void rs_drv_mac80211_tx_status(void *mvm_r,
 	struct iwl_op_mode *op_mode = mvm_r;
 	struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 
-	if (!iwl_mvm_sta_from_mac80211(sta)->vif)
+	if (!mvmsta->vif)
 		return;
 
 	if (!ieee80211_is_data(hdr->frame_control) ||
 	    info->flags & IEEE80211_TX_CTL_NO_ACK)
 		return;
 
+	/* If it's locked we are in middle of init flow
+	 * just wait for next tx status to update the lq_sta data
+	 */
+	if (!mutex_trylock(&mvmsta->lq_sta.rs_drv.mutex))
+		return;
+
 	iwl_mvm_rs_tx_status(mvm, sta, rs_get_tid(hdr), info,
 			     ieee80211_is_qos_nullfunc(hdr->frame_control));
+	mutex_unlock(&mvmsta->lq_sta.rs_drv.mutex);
 }
 
 /*
@@ -4136,10 +4165,15 @@ static const struct rate_control_ops rs_mvm_ops_drv = {
 void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 			  enum nl80211_band band, bool update)
 {
-	if (iwl_mvm_has_tlc_offload(mvm))
+	if (iwl_mvm_has_tlc_offload(mvm)) {
 		rs_fw_rate_init(mvm, sta, band, update);
-	else
+	} else {
+		struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
+
+		mutex_lock(&mvmsta->lq_sta.rs_drv.mutex);
 		rs_drv_rate_init(mvm, sta, band, update);
+		mutex_unlock(&mvmsta->lq_sta.rs_drv.mutex);
+	}
 }
 
 int iwl_mvm_rate_control_register(void)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rs.h b/drivers/net/wireless/intel/iwlwifi/mvm/rs.h
index f7eb60dbaf202..086f47e2a4f0c 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rs.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rs.h
@@ -4,7 +4,7 @@
  * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved.
  * Copyright(c) 2015 Intel Mobile Communications GmbH
  * Copyright(c) 2017 Intel Deutschland GmbH
- * Copyright(c) 2018 Intel Corporation
+ * Copyright(c) 2018 - 2019 Intel Corporation
  *
  * Contact Information:
  *  Intel Linux Wireless <linuxwifi@intel.com>
@@ -376,6 +376,9 @@ struct iwl_lq_sta {
 	/* tx power reduce for this sta */
 	int tpc_reduce;
 
+	/* avoid races of reinit and update table from rx_tx */
+	struct mutex mutex;
+
 	/* persistent fields - initialized only once - keep last! */
 	struct lq_sta_pers {
 #ifdef CONFIG_MAC80211_DEBUGFS
@@ -440,6 +443,8 @@ struct iwl_mvm_sta;
 int iwl_mvm_tx_protection(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
 			  bool enable);
 
+void iwl_mvm_rs_init_wk(struct work_struct *wk);
+
 #ifdef CONFIG_IWLWIFI_DEBUGFS
 void iwl_mvm_reset_frame_stats(struct iwl_mvm *mvm);
 #endif
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
index f545a737a92df..ac9bc65c4d156 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
@@ -1684,6 +1684,10 @@ int iwl_mvm_add_sta(struct iwl_mvm *mvm,
 	 */
 	if (iwl_mvm_has_tlc_offload(mvm))
 		iwl_mvm_rs_add_sta(mvm, mvm_sta);
+	else
+		mutex_init(&mvm_sta->lq_sta.rs_drv.mutex);
+
+	INIT_WORK(&mvm_sta->rs_init_wk, iwl_mvm_rs_init_wk);
 
 	iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant);
 
@@ -1846,6 +1850,8 @@ int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
 	if (ret)
 		return ret;
 
+	cancel_work_sync(&mvm_sta->rs_init_wk);
+
 	/* flush its queues here since we are freeing mvm_sta */
 	ret = iwl_mvm_flush_sta(mvm, mvm_sta, false, 0);
 	if (ret)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.h b/drivers/net/wireless/intel/iwlwifi/mvm/sta.h
index b4d4071b865db..6e93c30492b78 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.h
@@ -421,6 +421,7 @@ struct iwl_mvm_sta {
 		struct iwl_lq_sta_rs_fw rs_fw;
 		struct iwl_lq_sta rs_drv;
 	} lq_sta;
+	struct work_struct rs_init_wk;
 	struct ieee80211_vif *vif;
 	struct iwl_mvm_key_pn __rcu *ptk_pn[4];
 	struct iwl_mvm_rxq_dup_data *dup_data;
-- 
2.20.1

[PATCH AUTOSEL 5.2 063/123] iwlwifi: dbg_ini: move iwl_dbg_tlv_load_bin out of debug override ifdef

[Sasha Levin]

From: Shahar S Matityahu <shahar.s.matityahu@intel.com>

[ Upstream commit 072b30642f90b01d139131ec7bf763778a3a3f41 ]

ini debug mode should work even if debug override is not defined.

Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Fixes: 68f6f492c4fa ("iwlwifi: trans: support loading ini TLVs from external file")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/intel/iwlwifi/iwl-drv.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-drv.c b/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
index fba242284507b..efd4bf04d0162 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
@@ -1627,6 +1627,8 @@ struct iwl_drv *iwl_drv_start(struct iwl_trans *trans)
 	init_completion(&drv->request_firmware_complete);
 	INIT_LIST_HEAD(&drv->list);
 
+	iwl_load_fw_dbg_tlv(drv->trans->dev, drv->trans);
+
 #ifdef CONFIG_IWLWIFI_DEBUGFS
 	/* Create the device debugfs entries. */
 	drv->dbgfs_drv = debugfs_create_dir(dev_name(trans->dev),
-- 
2.20.1

[PATCH AUTOSEL 5.2 064/123] iwlwifi: dbg_ini: move iwl_dbg_tlv_free outside of debugfs ifdef

[Sasha Levin]

From: Shahar S Matityahu <shahar.s.matityahu@intel.com>

[ Upstream commit abcbef5977df1fb61026ba429964cd6b9a085699 ]

The driver should call iwl_dbg_tlv_free even if debugfs is not defined
since ini mode does not depend on debugfs ifdef.

Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Fixes: 68f6f492c4fa ("iwlwifi: trans: support loading ini TLVs from external file")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/intel/iwlwifi/iwl-drv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-drv.c b/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
index efd4bf04d0162..fa81ad67539f3 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-drv.c
@@ -1649,8 +1649,8 @@ struct iwl_drv *iwl_drv_start(struct iwl_trans *trans)
 err_fw:
 #ifdef CONFIG_IWLWIFI_DEBUGFS
 	debugfs_remove_recursive(drv->dbgfs_drv);
-	iwl_fw_dbg_free(drv->trans);
 #endif
+	iwl_fw_dbg_free(drv->trans);
 	kfree(drv);
 err:
 	return ERR_PTR(ret);
-- 
2.20.1

[PATCH AUTOSEL 5.2 065/123] iwlwifi: fix locking in delayed GTK setting

[Sasha Levin]

From: Johannes Berg <johannes.berg@intel.com>

[ Upstream commit 6569e7d36773956298ec1d5f4e6a2487913d2752 ]

This code clearly never could have worked, since it locks
while already locked. Add an unlocked __iwl_mvm_mac_set_key()
variant that doesn't do locking to fix that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 .../net/wireless/intel/iwlwifi/mvm/mac80211.c | 39 ++++++++++++-------
 1 file changed, 26 insertions(+), 13 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index 964c7baabede3..edffae3741e00 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -207,11 +207,11 @@ static const struct cfg80211_pmsr_capabilities iwl_mvm_pmsr_capa = {
 	},
 };
 
-static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
-			       enum set_key_cmd cmd,
-			       struct ieee80211_vif *vif,
-			       struct ieee80211_sta *sta,
-			       struct ieee80211_key_conf *key);
+static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
+				 enum set_key_cmd cmd,
+				 struct ieee80211_vif *vif,
+				 struct ieee80211_sta *sta,
+				 struct ieee80211_key_conf *key);
 
 void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
 {
@@ -2725,7 +2725,7 @@ static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
 
 		mvmvif->ap_early_keys[i] = NULL;
 
-		ret = iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key);
+		ret = __iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key);
 		if (ret)
 			goto out_quota_failed;
 	}
@@ -3493,11 +3493,11 @@ static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
 	return ret;
 }
 
-static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
-			       enum set_key_cmd cmd,
-			       struct ieee80211_vif *vif,
-			       struct ieee80211_sta *sta,
-			       struct ieee80211_key_conf *key)
+static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
+				 enum set_key_cmd cmd,
+				 struct ieee80211_vif *vif,
+				 struct ieee80211_sta *sta,
+				 struct ieee80211_key_conf *key)
 {
 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
@@ -3552,8 +3552,6 @@ static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
 			return -EOPNOTSUPP;
 	}
 
-	mutex_lock(&mvm->mutex);
-
 	switch (cmd) {
 	case SET_KEY:
 		if ((vif->type == NL80211_IFTYPE_ADHOC ||
@@ -3699,7 +3697,22 @@ static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
 		ret = -EINVAL;
 	}
 
+	return ret;
+}
+
+static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
+			       enum set_key_cmd cmd,
+			       struct ieee80211_vif *vif,
+			       struct ieee80211_sta *sta,
+			       struct ieee80211_key_conf *key)
+{
+	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
+	int ret;
+
+	mutex_lock(&mvm->mutex);
+	ret = __iwl_mvm_mac_set_key(hw, cmd, vif, sta, key);
 	mutex_unlock(&mvm->mutex);
+
 	return ret;
 }
 
-- 
2.20.1

[PATCH AUTOSEL 5.2 066/123] iwlwifi: mvm: send LQ command always ASYNC

[Sasha Levin]

From: Gregory Greenman <gregory.greenman@intel.com>

[ Upstream commit cd4d6b0bcd51580efda9ae54ab7b2d630b4147dc ]

The only place where the command was sent as SYNC is during
init and this is not really critical. This change is required
for replacing RS mutex with a spinlock (in the subsequent patch),
since SYNC comamnd requres sleeping and thus the flow cannot
be done when holding a spinlock.

Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/intel/iwlwifi/mvm/mvm.h  |  2 +-
 drivers/net/wireless/intel/iwlwifi/mvm/rs.c   | 23 ++++++++++---------
 drivers/net/wireless/intel/iwlwifi/mvm/sta.c  |  2 +-
 .../net/wireless/intel/iwlwifi/mvm/utils.c    |  4 ++--
 4 files changed, 16 insertions(+), 15 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
index 88af1f0ba3f0f..31c8636b2a3f8 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
@@ -1806,7 +1806,7 @@ iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 #endif /* CONFIG_IWLWIFI_DEBUGFS */
 
 /* rate scaling */
-int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool sync);
+int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq);
 void iwl_mvm_update_frame_stats(struct iwl_mvm *mvm, u32 rate, bool agg);
 int rs_pretty_print_rate(char *buf, int bufsz, const u32 rate);
 void rs_update_last_rssi(struct iwl_mvm *mvm,
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rs.c b/drivers/net/wireless/intel/iwlwifi/mvm/rs.c
index 836541caa3167..01b032f18bc8b 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rs.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rs.c
@@ -1326,7 +1326,7 @@ void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 			IWL_DEBUG_RATE(mvm,
 				       "Too many rates mismatch. Send sync LQ. rs_state %d\n",
 				       lq_sta->rs_state);
-			iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq, false);
+			iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq);
 		}
 		/* Regardless, ignore this status info for outdated rate */
 		return;
@@ -1388,7 +1388,8 @@ void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 		if (info->status.ampdu_ack_len == 0)
 			info->status.ampdu_len = 1;
 
-		rs_collect_tlc_data(mvm, mvmsta, tid, curr_tbl, tx_resp_rate.index,
+		rs_collect_tlc_data(mvm, mvmsta, tid, curr_tbl,
+				    tx_resp_rate.index,
 				    info->status.ampdu_len,
 				    info->status.ampdu_ack_len);
 
@@ -1823,7 +1824,7 @@ static void rs_update_rate_tbl(struct iwl_mvm *mvm,
 			       struct iwl_scale_tbl_info *tbl)
 {
 	rs_fill_lq_cmd(mvm, sta, lq_sta, &tbl->rate);
-	iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq, false);
+	iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq);
 }
 
 static bool rs_tweak_rate_tbl(struct iwl_mvm *mvm,
@@ -2925,7 +2926,7 @@ void rs_update_last_rssi(struct iwl_mvm *mvm,
 static void rs_initialize_lq(struct iwl_mvm *mvm,
 			     struct ieee80211_sta *sta,
 			     struct iwl_lq_sta *lq_sta,
-			     enum nl80211_band band, bool update)
+			     enum nl80211_band band)
 {
 	struct iwl_scale_tbl_info *tbl;
 	struct rs_rate *rate;
@@ -2955,7 +2956,7 @@ static void rs_initialize_lq(struct iwl_mvm *mvm,
 	rs_set_expected_tpt_table(lq_sta, tbl);
 	rs_fill_lq_cmd(mvm, sta, lq_sta, rate);
 	/* TODO restore station should remember the lq cmd */
-	iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq, !update);
+	iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq);
 }
 
 static void rs_drv_get_rate(void *mvm_r, struct ieee80211_sta *sta,
@@ -3208,7 +3209,7 @@ void iwl_mvm_update_frame_stats(struct iwl_mvm *mvm, u32 rate, bool agg)
  * Called after adding a new station to initialize rate scaling
  */
 static void rs_drv_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
-			     enum nl80211_band band, bool update)
+			     enum nl80211_band band)
 {
 	int i, j;
 	struct ieee80211_hw *hw = mvm->hw;
@@ -3288,7 +3289,7 @@ static void rs_drv_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 #ifdef CONFIG_IWLWIFI_DEBUGFS
 	iwl_mvm_reset_frame_stats(mvm);
 #endif
-	rs_initialize_lq(mvm, sta, lq_sta, band, update);
+	rs_initialize_lq(mvm, sta, lq_sta, band);
 }
 
 static void rs_drv_rate_update(void *mvm_r,
@@ -3602,7 +3603,7 @@ static void rs_set_lq_ss_params(struct iwl_mvm *mvm,
 
 		bfersta_ss_params &= ~LQ_SS_BFER_ALLOWED;
 		bfersta_lq_cmd->ss_params = cpu_to_le32(bfersta_ss_params);
-		iwl_mvm_send_lq_cmd(mvm, bfersta_lq_cmd, false);
+		iwl_mvm_send_lq_cmd(mvm, bfersta_lq_cmd);
 
 		ss_params |= LQ_SS_BFER_ALLOWED;
 		IWL_DEBUG_RATE(mvm,
@@ -3768,7 +3769,7 @@ static void rs_program_fix_rate(struct iwl_mvm *mvm,
 
 	if (lq_sta->pers.dbg_fixed_rate) {
 		rs_fill_lq_cmd(mvm, NULL, lq_sta, NULL);
-		iwl_mvm_send_lq_cmd(lq_sta->pers.drv, &lq_sta->lq, false);
+		iwl_mvm_send_lq_cmd(lq_sta->pers.drv, &lq_sta->lq);
 	}
 }
 
@@ -4171,7 +4172,7 @@ void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
 		struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 
 		mutex_lock(&mvmsta->lq_sta.rs_drv.mutex);
-		rs_drv_rate_init(mvm, sta, band, update);
+		rs_drv_rate_init(mvm, sta, band);
 		mutex_unlock(&mvmsta->lq_sta.rs_drv.mutex);
 	}
 }
@@ -4203,7 +4204,7 @@ static int rs_drv_tx_protection(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
 			lq->flags &= ~LQ_FLAG_USE_RTS_MSK;
 	}
 
-	return iwl_mvm_send_lq_cmd(mvm, lq, false);
+	return iwl_mvm_send_lq_cmd(mvm, lq);
 }
 
 /**
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
index ac9bc65c4d156..22715cdb83171 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/sta.c
@@ -2978,7 +2978,7 @@ int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 	IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",
 		     sta->addr, tid);
 
-	return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.rs_drv.lq, false);
+	return iwl_mvm_send_lq_cmd(mvm, &mvmsta->lq_sta.rs_drv.lq);
 }
 
 static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm,
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
index cc56ab88fb439..a71277de2e0eb 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/utils.c
@@ -641,12 +641,12 @@ int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id,
  * this case to clear the state indicating that station creation is in
  * progress.
  */
-int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool sync)
+int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq)
 {
 	struct iwl_host_cmd cmd = {
 		.id = LQ_CMD,
 		.len = { sizeof(struct iwl_lq_cmd), },
-		.flags = sync ? 0 : CMD_ASYNC,
+		.flags = CMD_ASYNC,
 		.data = { lq, },
 	};
 
-- 
2.20.1

[PATCH AUTOSEL 5.2 068/123] enetc: Fix build error without PHYLIB

[Sasha Levin]

From: YueHaibing <yuehaibing@huawei.com>

[ Upstream commit 5f4e4203add2b860d2345312509a160f8292063b ]

If PHYLIB is not set, build enetc will fails:

drivers/net/ethernet/freescale/enetc/enetc.o: In function `enetc_open':
enetc.c: undefined reference to `phy_disconnect'
enetc.c: undefined reference to `phy_start'
drivers/net/ethernet/freescale/enetc/enetc.o: In function `enetc_close':
enetc.c: undefined reference to `phy_stop'
enetc.c: undefined reference to `phy_disconnect'
drivers/net/ethernet/freescale/enetc/enetc_ethtool.o: undefined reference to `phy_ethtool_get_link_ksettings'
drivers/net/ethernet/freescale/enetc/enetc_ethtool.o: undefined reference to `phy_ethtool_set_link_ksettings'
drivers/net/ethernet/freescale/enetc/enetc_mdio.o: In function `enetc_mdio_probe':
enetc_mdio.c: undefined reference to `mdiobus_alloc_size'
enetc_mdio.c: undefined reference to `mdiobus_free'

Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: d4fd0404c1c9 ("enetc: Introduce basic PF and VF ENETC ethernet drivers")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/freescale/enetc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/freescale/enetc/Kconfig b/drivers/net/ethernet/freescale/enetc/Kconfig
index 8429f5c1d8106..8ac109e73a7bb 100644
--- a/drivers/net/ethernet/freescale/enetc/Kconfig
+++ b/drivers/net/ethernet/freescale/enetc/Kconfig
@@ -2,6 +2,7 @@
 config FSL_ENETC
 	tristate "ENETC PF driver"
 	depends on PCI && PCI_MSI && (ARCH_LAYERSCAPE || COMPILE_TEST)
+	select PHYLIB
 	help
 	  This driver supports NXP ENETC gigabit ethernet controller PCIe
 	  physical function (PF) devices, managing ENETC Ports at a privileged
-- 
2.20.1

[PATCH AUTOSEL 5.2 069/123] isdn: hfcsusb: Fix mISDN driver crash caused by transfer buffer on the stack

[Sasha Levin]

From: Juliana Rodrigueiro <juliana.rodrigueiro@intra2net.com>

[ Upstream commit d8a1de3d5bb881507602bc02e004904828f88711 ]

Since linux 4.9 it is not possible to use buffers on the stack for DMA transfers.

During usb probe the driver crashes with "transfer buffer is on stack" message.

This fix k-allocates a buffer to be used on "read_reg_atomic", which is a macro
that calls "usb_control_msg" under the hood.

Kernel 4.19 backtrace:

usb_hcd_submit_urb+0x3e5/0x900
? sched_clock+0x9/0x10
? log_store+0x203/0x270
? get_random_u32+0x6f/0x90
? cache_alloc_refill+0x784/0x8a0
usb_submit_urb+0x3b4/0x550
usb_start_wait_urb+0x4e/0xd0
usb_control_msg+0xb8/0x120
hfcsusb_probe+0x6bc/0xb40 [hfcsusb]
usb_probe_interface+0xc2/0x260
really_probe+0x176/0x280
driver_probe_device+0x49/0x130
__driver_attach+0xa9/0xb0
? driver_probe_device+0x130/0x130
bus_for_each_dev+0x5a/0x90
driver_attach+0x14/0x20
? driver_probe_device+0x130/0x130
bus_add_driver+0x157/0x1e0
driver_register+0x51/0xe0
usb_register_driver+0x5d/0x120
? 0xf81ed000
hfcsusb_drv_init+0x17/0x1000 [hfcsusb]
do_one_initcall+0x44/0x190
? free_unref_page_commit+0x6a/0xd0
do_init_module+0x46/0x1c0
load_module+0x1dc1/0x2400
sys_init_module+0xed/0x120
do_fast_syscall_32+0x7a/0x200
entry_SYSENTER_32+0x6b/0xbe

Signed-off-by: Juliana Rodrigueiro <juliana.rodrigueiro@intra2net.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/isdn/hardware/mISDN/hfcsusb.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/isdn/hardware/mISDN/hfcsusb.c b/drivers/isdn/hardware/mISDN/hfcsusb.c
index 8fb7c5dea07fc..008a74a1ed444 100644
--- a/drivers/isdn/hardware/mISDN/hfcsusb.c
+++ b/drivers/isdn/hardware/mISDN/hfcsusb.c
@@ -1693,13 +1693,23 @@ hfcsusb_stop_endpoint(struct hfcsusb *hw, int channel)
 static int
 setup_hfcsusb(struct hfcsusb *hw)
 {
+	void *dmabuf = kmalloc(sizeof(u_char), GFP_KERNEL);
 	u_char b;
+	int ret;
 
 	if (debug & DBG_HFC_CALL_TRACE)
 		printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
 
+	if (!dmabuf)
+		return -ENOMEM;
+
+	ret = read_reg_atomic(hw, HFCUSB_CHIP_ID, dmabuf);
+
+	memcpy(&b, dmabuf, sizeof(u_char));
+	kfree(dmabuf);
+
 	/* check the chip id */
-	if (read_reg_atomic(hw, HFCUSB_CHIP_ID, &b) != 1) {
+	if (ret != 1) {
 		printk(KERN_DEBUG "%s: %s: cannot read chip id\n",
 		       hw->name, __func__);
 		return 1;
-- 
2.20.1

[PATCH AUTOSEL 5.2 070/123] net: phy: phy_led_triggers: Fix a possible null-pointer dereference in phy_led_trigger_change_speed()

[Sasha Levin]

From: Jia-Ju Bai <baijiaju1990@gmail.com>

[ Upstream commit 271da132e29b5341c31eca6ba6a72ea1302ebac8 ]

In phy_led_trigger_change_speed(), there is an if statement on line 48
to check whether phy->last_triggered is NULL:
    if (!phy->last_triggered)

When phy->last_triggered is NULL, it is used on line 52:
    led_trigger_event(&phy->last_triggered->trigger, LED_OFF);

Thus, a possible null-pointer dereference may occur.

To fix this bug, led_trigger_event(&phy->last_triggered->trigger,
LED_OFF) is called when phy->last_triggered is not NULL.

This bug is found by a static analysis tool STCheck written by
the OSLAB group in Tsinghua University.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/phy/phy_led_triggers.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/phy/phy_led_triggers.c b/drivers/net/phy/phy_led_triggers.c
index b86a4b2116f81..59a94e07e7c55 100644
--- a/drivers/net/phy/phy_led_triggers.c
+++ b/drivers/net/phy/phy_led_triggers.c
@@ -48,8 +48,9 @@ void phy_led_trigger_change_speed(struct phy_device *phy)
 		if (!phy->last_triggered)
 			led_trigger_event(&phy->led_link_trigger->trigger,
 					  LED_FULL);
+		else
+			led_trigger_event(&phy->last_triggered->trigger, LED_OFF);
 
-		led_trigger_event(&phy->last_triggered->trigger, LED_OFF);
 		led_trigger_event(&plt->trigger, LED_FULL);
 		phy->last_triggered = plt;
 	}
-- 
2.20.1

[PATCH AUTOSEL 5.2 073/123] net: usb: pegasus: fix improper read if get_registers() fail

[Sasha Levin]

From: Denis Kirjanov <kda@linux-powerpc.org>

[ Upstream commit 224c04973db1125fcebefffd86115f99f50f8277 ]

get_registers() may fail with -ENOMEM and in this
case we can read a garbage from the status variable tmp.

Reported-by: syzbot+3499a83b2d062ae409d4@syzkaller.appspotmail.com
Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/usb/pegasus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/usb/pegasus.c b/drivers/net/usb/pegasus.c
index 6d25dea5ad4b2..f7d117d80cfbb 100644
--- a/drivers/net/usb/pegasus.c
+++ b/drivers/net/usb/pegasus.c
@@ -282,7 +282,7 @@ static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
 static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata)
 {
 	int i;
-	__u8 tmp;
+	__u8 tmp = 0;
 	__le16 retdatai;
 	int ret;
 
-- 
2.20.1

[PATCH AUTOSEL 5.2 075/123] can: sja1000: force the string buffer NULL-terminated

[Sasha Levin]

From: Wang Xiayang <xywang.sjtu@sjtu.edu.cn>

[ Upstream commit cd28aa2e056cd1ea79fc5f24eed0ce868c6cab5c ]

strncpy() does not ensure NULL-termination when the input string size
equals to the destination buffer size IFNAMSIZ. The output string
'name' is passed to dev_info which relies on NULL-termination.

Use strlcpy() instead.

This issue is identified by a Coccinelle script.

Signed-off-by: Wang Xiayang <xywang.sjtu@sjtu.edu.cn>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/can/sja1000/peak_pcmcia.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/can/sja1000/peak_pcmcia.c b/drivers/net/can/sja1000/peak_pcmcia.c
index 185c7f7d38a4a..5e0d5e8101c86 100644
--- a/drivers/net/can/sja1000/peak_pcmcia.c
+++ b/drivers/net/can/sja1000/peak_pcmcia.c
@@ -479,7 +479,7 @@ static void pcan_free_channels(struct pcan_pccard *card)
 		if (!netdev)
 			continue;
 
-		strncpy(name, netdev->name, IFNAMSIZ);
+		strlcpy(name, netdev->name, IFNAMSIZ);
 
 		unregister_sja1000dev(netdev);
 
-- 
2.20.1

[PATCH AUTOSEL 5.2 076/123] can: peak_usb: force the string buffer NULL-terminated

[Sasha Levin]

From: Wang Xiayang <xywang.sjtu@sjtu.edu.cn>

[ Upstream commit e787f19373b8a5fa24087800ed78314fd17b984a ]

strncpy() does not ensure NULL-termination when the input string size
equals to the destination buffer size IFNAMSIZ. The output string is
passed to dev_info() which relies on the NULL-termination.

Use strlcpy() instead.

This issue is identified by a Coccinelle script.

Signed-off-by: Wang Xiayang <xywang.sjtu@sjtu.edu.cn>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/can/usb/peak_usb/pcan_usb_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_core.c b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
index 458154c9b4829..4c2cda5ecf3f8 100644
--- a/drivers/net/can/usb/peak_usb/pcan_usb_core.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
@@ -855,7 +855,7 @@ static void peak_usb_disconnect(struct usb_interface *intf)
 
 		dev_prev_siblings = dev->prev_siblings;
 		dev->state &= ~PCAN_USB_STATE_CONNECTED;
-		strncpy(name, netdev->name, IFNAMSIZ);
+		strlcpy(name, netdev->name, IFNAMSIZ);
 
 		unregister_netdev(netdev);
 
-- 
2.20.1

[PATCH AUTOSEL 5.2 078/123] net/ethernet/qlogic/qed: force the string buffer NULL-terminated

[Sasha Levin]

From: Wang Xiayang <xywang.sjtu@sjtu.edu.cn>

[ Upstream commit 3690c8c9a8edff0db077a38783112d8fe12a7dd2 ]

strncpy() does not ensure NULL-termination when the input string
size equals to the destination buffer size 30.
The output string is passed to qed_int_deassertion_aeu_bit()
which calls DP_INFO() and relies NULL-termination.

Use strlcpy instead. The other conditional branch above strncpy()
needs no fix as snprintf() ensures NULL-termination.

This issue is identified by a Coccinelle script.

Signed-off-by: Wang Xiayang <xywang.sjtu@sjtu.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/qlogic/qed/qed_int.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_int.c b/drivers/net/ethernet/qlogic/qed/qed_int.c
index fdfedbc8e4311..70a771cd87889 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_int.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_int.c
@@ -1093,7 +1093,7 @@ static int qed_int_deassertion(struct qed_hwfn  *p_hwfn,
 						snprintf(bit_name, 30,
 							 p_aeu->bit_name, num);
 					else
-						strncpy(bit_name,
+						strlcpy(bit_name,
 							p_aeu->bit_name, 30);
 
 					/* We now need to pass bitmask in its
-- 
2.20.1

[PATCH AUTOSEL 5.2 079/123] enetc: Select PHYLIB while CONFIG_FSL_ENETC_VF is set

[Sasha Levin]

From: YueHaibing <yuehaibing@huawei.com>

[ Upstream commit 2802d2cf24b1ca7ea4c54dde266ded6a16020eb5 ]

Like FSL_ENETC, when CONFIG_FSL_ENETC_VF is set,
we should select PHYLIB, otherwise building still fails:

drivers/net/ethernet/freescale/enetc/enetc.o: In function `enetc_open':
enetc.c:(.text+0x2744): undefined reference to `phy_start'
enetc.c:(.text+0x282c): undefined reference to `phy_disconnect'
drivers/net/ethernet/freescale/enetc/enetc.o: In function `enetc_close':
enetc.c:(.text+0x28f8): undefined reference to `phy_stop'
enetc.c:(.text+0x2904): undefined reference to `phy_disconnect'
drivers/net/ethernet/freescale/enetc/enetc_ethtool.o:(.rodata+0x3f8): undefined reference to `phy_ethtool_get_link_ksettings'
drivers/net/ethernet/freescale/enetc/enetc_ethtool.o:(.rodata+0x400): undefined reference to `phy_ethtool_set_link_ksettings'

Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: d4fd0404c1c9 ("enetc: Introduce basic PF and VF ENETC ethernet drivers")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/freescale/enetc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/freescale/enetc/Kconfig b/drivers/net/ethernet/freescale/enetc/Kconfig
index 8ac109e73a7bb..a268e74b1834e 100644
--- a/drivers/net/ethernet/freescale/enetc/Kconfig
+++ b/drivers/net/ethernet/freescale/enetc/Kconfig
@@ -13,6 +13,7 @@ config FSL_ENETC
 config FSL_ENETC_VF
 	tristate "ENETC VF driver"
 	depends on PCI && PCI_MSI && (ARCH_LAYERSCAPE || COMPILE_TEST)
+	select PHYLIB
 	help
 	  This driver supports NXP ENETC gigabit ethernet controller PCIe
 	  virtual function (VF) devices enabled by the ENETC PF driver.
-- 
2.20.1

[PATCH AUTOSEL 5.2 102/123] net: cxgb3_main: Fix a resource leak in a error path in 'init_one()'

[Sasha Levin]

From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

[ Upstream commit debea2cd3193ac868289e8893c3a719c265b0612 ]

A call to 'kfree_skb()' is missing in the error handling path of
'init_one()'.
This is already present in 'remove_one()' but is missing here.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
index 1e82b9efe4471..58f89f6a040fe 100644
--- a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
@@ -3269,7 +3269,7 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (!adapter->regs) {
 		dev_err(&pdev->dev, "cannot map device registers\n");
 		err = -ENOMEM;
-		goto out_free_adapter;
+		goto out_free_adapter_nofail;
 	}
 
 	adapter->pdev = pdev;
@@ -3397,6 +3397,9 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 		if (adapter->port[i])
 			free_netdev(adapter->port[i]);
 
+out_free_adapter_nofail:
+	kfree_skb(adapter->nofail_skb);
+
 out_free_adapter:
 	kfree(adapter);
 
-- 
2.20.1

[PATCH AUTOSEL 5.2 103/123] net: stmmac: Fix issues when number of Queues >= 4

[Sasha Levin]

From: Jose Abreu <Jose.Abreu@synopsys.com>

[ Upstream commit e8df7e8c233a18d2704e37ecff47583b494789d3 ]

When queues >= 4 we use different registers but we were not subtracting
the offset of 4. Fix this.

Found out by Coverity.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c   | 4 ++++
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
index e3850938cf2f3..d7bf0ad954b8c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
@@ -85,6 +85,8 @@ static void dwmac4_rx_queue_priority(struct mac_device_info *hw,
 	u32 value;
 
 	base_register = (queue < 4) ? GMAC_RXQ_CTRL2 : GMAC_RXQ_CTRL3;
+	if (queue >= 4)
+		queue -= 4;
 
 	value = readl(ioaddr + base_register);
 
@@ -102,6 +104,8 @@ static void dwmac4_tx_queue_priority(struct mac_device_info *hw,
 	u32 value;
 
 	base_register = (queue < 4) ? GMAC_TXQ_PRTY_MAP0 : GMAC_TXQ_PRTY_MAP1;
+	if (queue >= 4)
+		queue -= 4;
 
 	value = readl(ioaddr + base_register);
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index 64b8cb88ea45d..d4bd99770f5d1 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -106,6 +106,8 @@ static void dwxgmac2_rx_queue_prio(struct mac_device_info *hw, u32 prio,
 	u32 value, reg;
 
 	reg = (queue < 4) ? XGMAC_RXQ_CTRL2 : XGMAC_RXQ_CTRL3;
+	if (queue >= 4)
+		queue -= 4;
 
 	value = readl(ioaddr + reg);
 	value &= ~XGMAC_PSRQ(queue);
@@ -169,6 +171,8 @@ static void dwxgmac2_map_mtl_to_dma(struct mac_device_info *hw, u32 queue,
 	u32 value, reg;
 
 	reg = (queue < 4) ? XGMAC_MTL_RXQ_DMA_MAP0 : XGMAC_MTL_RXQ_DMA_MAP1;
+	if (queue >= 4)
+		queue -= 4;
 
 	value = readl(ioaddr + reg);
 	value &= ~XGMAC_QxMDMACH(queue);
-- 
2.20.1

[PATCH AUTOSEL 5.2 104/123] net: stmmac: tc: Do not return a fragment entry

[Sasha Levin]

From: Jose Abreu <Jose.Abreu@synopsys.com>

[ Upstream commit 4a6a1385a4db5f42258a40fcd497cbfd22075968 ]

Do not try to return a fragment entry from TC list. Otherwise we may not
clean properly allocated entries.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
index 58ea18af9813a..37c0bc699cd9c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
@@ -37,7 +37,7 @@ static struct stmmac_tc_entry *tc_find_entry(struct stmmac_priv *priv,
 		entry = &priv->tc_entries[i];
 		if (!entry->in_use && !first && free)
 			first = entry;
-		if (entry->handle == loc && !free)
+		if ((entry->handle == loc) && !free && !entry->is_frag)
 			dup = entry;
 	}
 
-- 
2.20.1

[PATCH AUTOSEL 5.2 106/123] net: hisilicon: make hip04_tx_reclaim non-reentrant

[Sasha Levin]

From: Jiangfeng Xiao <xiaojiangfeng@huawei.com>

[ Upstream commit 1a2c070ae805910a853b4a14818481ed2e17c727 ]

If hip04_tx_reclaim is interrupted while it is running
and then __napi_schedule continues to execute
hip04_rx_poll->hip04_tx_reclaim, reentrancy occurs
and oops is generated. So you need to mask the interrupt
during the hip04_tx_reclaim run.

The kernel oops exception stack is as follows:

Unable to handle kernel NULL pointer dereference
at virtual address 00000050
pgd = c0003000
[00000050] *pgd=80000000a04003, *pmd=00000000
Internal error: Oops: 206 [#1] SMP ARM
Modules linked in: hip04_eth mtdblock mtd_blkdevs mtd
ohci_platform ehci_platform ohci_hcd ehci_hcd
vfat fat sd_mod usb_storage scsi_mod usbcore usb_common
CPU: 0 PID: 0 Comm: swapper/0 Tainted: G           O    4.4.185 #1
Hardware name: Hisilicon A15
task: c0a250e0 task.stack: c0a00000
PC is at hip04_tx_reclaim+0xe0/0x17c [hip04_eth]
LR is at hip04_tx_reclaim+0x30/0x17c [hip04_eth]
pc : [<bf30c3a4>]    lr : [<bf30c2f4>]    psr: 600e0313
sp : c0a01d88  ip : 00000000  fp : c0601f9c
r10: 00000000  r9 : c3482380  r8 : 00000001
r7 : 00000000  r6 : 000000e1  r5 : c3482000  r4 : 0000000c
r3 : f2209800  r2 : 00000000  r1 : 00000000  r0 : 00000000
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
Control: 32c5387d  Table: 03d28c80  DAC: 55555555
Process swapper/0 (pid: 0, stack limit = 0xc0a00190)
Stack: (0xc0a01d88 to 0xc0a02000)
[<bf30c3a4>] (hip04_tx_reclaim [hip04_eth]) from [<bf30d2e0>]
                                                (hip04_rx_poll+0x88/0x368 [hip04_eth])
[<bf30d2e0>] (hip04_rx_poll [hip04_eth]) from [<c04c2d9c>] (net_rx_action+0x114/0x34c)
[<c04c2d9c>] (net_rx_action) from [<c021eed8>] (__do_softirq+0x218/0x318)
[<c021eed8>] (__do_softirq) from [<c021f284>] (irq_exit+0x88/0xac)
[<c021f284>] (irq_exit) from [<c0240090>] (msa_irq_exit+0x11c/0x1d4)
[<c0240090>] (msa_irq_exit) from [<c02677e0>] (__handle_domain_irq+0x110/0x148)
[<c02677e0>] (__handle_domain_irq) from [<c0201588>] (gic_handle_irq+0xd4/0x118)
[<c0201588>] (gic_handle_irq) from [<c0551700>] (__irq_svc+0x40/0x58)
Exception stack(0xc0a01f30 to 0xc0a01f78)
1f20:                                     c0ae8b40 00000000 00000000 00000000
1f40: 00000002 ffffe000 c0601f9c 00000000 ffffffff c0a2257c c0a22440 c0831a38
1f60: c0a01ec4 c0a01f80 c0203714 c0203718 600e0213 ffffffff
[<c0551700>] (__irq_svc) from [<c0203718>] (arch_cpu_idle+0x20/0x3c)
[<c0203718>] (arch_cpu_idle) from [<c025bfd8>] (cpu_startup_entry+0x244/0x29c)
[<c025bfd8>] (cpu_startup_entry) from [<c054b0d8>] (rest_init+0xc8/0x10c)
[<c054b0d8>] (rest_init) from [<c0800c58>] (start_kernel+0x468/0x514)
Code: a40599e5 016086e2 018088e2 7660efe6 (503090e5)
---[ end trace 1db21d6d09c49d74 ]---
Kernel panic - not syncing: Fatal exception in interrupt
CPU3: stopping
CPU: 3 PID: 0 Comm: swapper/3 Tainted: G      D    O    4.4.185 #1

Signed-off-by: Jiangfeng Xiao <xiaojiangfeng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/hisilicon/hip04_eth.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hip04_eth.c b/drivers/net/ethernet/hisilicon/hip04_eth.c
index e1f2978506fd3..5abe88dfe6abf 100644
--- a/drivers/net/ethernet/hisilicon/hip04_eth.c
+++ b/drivers/net/ethernet/hisilicon/hip04_eth.c
@@ -494,6 +494,9 @@ static int hip04_rx_poll(struct napi_struct *napi, int budget)
 	u16 len;
 	u32 err;
 
+	/* clean up tx descriptors */
+	tx_remaining = hip04_tx_reclaim(ndev, false);
+
 	while (cnt && !last) {
 		buf = priv->rx_buf[priv->rx_head];
 		skb = build_skb(buf, priv->rx_buf_size);
@@ -554,8 +557,7 @@ static int hip04_rx_poll(struct napi_struct *napi, int budget)
 	}
 	napi_complete_done(napi, rx);
 done:
-	/* clean up tx descriptors and start a new timer if necessary */
-	tx_remaining = hip04_tx_reclaim(ndev, false);
+	/* start a new timer if necessary */
 	if (rx < budget && tx_remaining)
 		hip04_start_tx_timer(priv);
 
-- 
2.20.1

[PATCH AUTOSEL 5.2 107/123] net: hisilicon: fix hip04-xmit never return TX_BUSY

[Sasha Levin]

From: Jiangfeng Xiao <xiaojiangfeng@huawei.com>

[ Upstream commit f2243b82785942be519016067ee6c55a063bbfe2 ]

TX_DESC_NUM is 256, in tx_count, the maximum value of
mod(TX_DESC_NUM - 1) is 254, the variable "count" in
the hip04_mac_start_xmit function is never equal to
(TX_DESC_NUM - 1), so hip04_mac_start_xmit never
return NETDEV_TX_BUSY.

tx_count is modified to mod(TX_DESC_NUM) so that
the maximum value of tx_count can reach
(TX_DESC_NUM - 1), then hip04_mac_start_xmit can reurn
NETDEV_TX_BUSY.

Signed-off-by: Jiangfeng Xiao <xiaojiangfeng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/hisilicon/hip04_eth.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/hisilicon/hip04_eth.c b/drivers/net/ethernet/hisilicon/hip04_eth.c
index 5abe88dfe6abf..ee6da8d66cd31 100644
--- a/drivers/net/ethernet/hisilicon/hip04_eth.c
+++ b/drivers/net/ethernet/hisilicon/hip04_eth.c
@@ -181,7 +181,7 @@ struct hip04_priv {
 
 static inline unsigned int tx_count(unsigned int head, unsigned int tail)
 {
-	return (head - tail) % (TX_DESC_NUM - 1);
+	return (head - tail) % TX_DESC_NUM;
 }
 
 static void hip04_config_port(struct net_device *ndev, u32 speed, u32 duplex)
-- 
2.20.1

[PATCH AUTOSEL 5.2 108/123] net: hisilicon: Fix dma_map_single failed on arm64

[Sasha Levin]

From: Jiangfeng Xiao <xiaojiangfeng@huawei.com>

[ Upstream commit 96a50c0d907ac8f5c3d6b051031a19eb8a2b53e3 ]

On the arm64 platform, executing "ifconfig eth0 up" will fail,
returning "ifconfig: SIOCSIFFLAGS: Input/output error."

ndev->dev is not initialized, dma_map_single->get_dma_ops->
dummy_dma_ops->__dummy_map_page will return DMA_ERROR_CODE
directly, so when we use dma_map_single, the first parameter
is to use the device of platform_device.

Signed-off-by: Jiangfeng Xiao <xiaojiangfeng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/hisilicon/hip04_eth.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hip04_eth.c b/drivers/net/ethernet/hisilicon/hip04_eth.c
index ee6da8d66cd31..51cf6b0db904b 100644
--- a/drivers/net/ethernet/hisilicon/hip04_eth.c
+++ b/drivers/net/ethernet/hisilicon/hip04_eth.c
@@ -153,6 +153,7 @@ struct hip04_priv {
 	unsigned int reg_inten;
 
 	struct napi_struct napi;
+	struct device *dev;
 	struct net_device *ndev;
 
 	struct tx_desc *tx_desc;
@@ -383,7 +384,7 @@ static int hip04_tx_reclaim(struct net_device *ndev, bool force)
 		}
 
 		if (priv->tx_phys[tx_tail]) {
-			dma_unmap_single(&ndev->dev, priv->tx_phys[tx_tail],
+			dma_unmap_single(priv->dev, priv->tx_phys[tx_tail],
 					 priv->tx_skb[tx_tail]->len,
 					 DMA_TO_DEVICE);
 			priv->tx_phys[tx_tail] = 0;
@@ -434,8 +435,8 @@ hip04_mac_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 		return NETDEV_TX_BUSY;
 	}
 
-	phys = dma_map_single(&ndev->dev, skb->data, skb->len, DMA_TO_DEVICE);
-	if (dma_mapping_error(&ndev->dev, phys)) {
+	phys = dma_map_single(priv->dev, skb->data, skb->len, DMA_TO_DEVICE);
+	if (dma_mapping_error(priv->dev, phys)) {
 		dev_kfree_skb(skb);
 		return NETDEV_TX_OK;
 	}
@@ -505,7 +506,7 @@ static int hip04_rx_poll(struct napi_struct *napi, int budget)
 			goto refill;
 		}
 
-		dma_unmap_single(&ndev->dev, priv->rx_phys[priv->rx_head],
+		dma_unmap_single(priv->dev, priv->rx_phys[priv->rx_head],
 				 RX_BUF_SIZE, DMA_FROM_DEVICE);
 		priv->rx_phys[priv->rx_head] = 0;
 
@@ -534,9 +535,9 @@ static int hip04_rx_poll(struct napi_struct *napi, int budget)
 		buf = netdev_alloc_frag(priv->rx_buf_size);
 		if (!buf)
 			goto done;
-		phys = dma_map_single(&ndev->dev, buf,
+		phys = dma_map_single(priv->dev, buf,
 				      RX_BUF_SIZE, DMA_FROM_DEVICE);
-		if (dma_mapping_error(&ndev->dev, phys))
+		if (dma_mapping_error(priv->dev, phys))
 			goto done;
 		priv->rx_buf[priv->rx_head] = buf;
 		priv->rx_phys[priv->rx_head] = phys;
@@ -639,9 +640,9 @@ static int hip04_mac_open(struct net_device *ndev)
 	for (i = 0; i < RX_DESC_NUM; i++) {
 		dma_addr_t phys;
 
-		phys = dma_map_single(&ndev->dev, priv->rx_buf[i],
+		phys = dma_map_single(priv->dev, priv->rx_buf[i],
 				      RX_BUF_SIZE, DMA_FROM_DEVICE);
-		if (dma_mapping_error(&ndev->dev, phys))
+		if (dma_mapping_error(priv->dev, phys))
 			return -EIO;
 
 		priv->rx_phys[i] = phys;
@@ -675,7 +676,7 @@ static int hip04_mac_stop(struct net_device *ndev)
 
 	for (i = 0; i < RX_DESC_NUM; i++) {
 		if (priv->rx_phys[i]) {
-			dma_unmap_single(&ndev->dev, priv->rx_phys[i],
+			dma_unmap_single(priv->dev, priv->rx_phys[i],
 					 RX_BUF_SIZE, DMA_FROM_DEVICE);
 			priv->rx_phys[i] = 0;
 		}
@@ -819,6 +820,7 @@ static int hip04_mac_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	priv = netdev_priv(ndev);
+	priv->dev = d;
 	priv->ndev = ndev;
 	platform_set_drvdata(pdev, ndev);
 	SET_NETDEV_DEV(ndev, &pdev->dev);
-- 
2.20.1