platform/kernel/linux-starfive.git
5 years agonet/smc: avoid fallback in case of non-blocking connect
Ursula Braun [Fri, 2 Aug 2019 08:47:50 +0000 (10:47 +0200)]
net/smc: avoid fallback in case of non-blocking connect

FASTOPEN is not possible with SMC. sendmsg() with msg_flag MSG_FASTOPEN
triggers a fallback to TCP if the socket is in state SMC_INIT.
But if a nonblocking connect is already started, fallback to TCP
is no longer possible, even though the socket may still be in state
SMC_INIT.
And if a nonblocking connect is already started, a listen() call
does not make sense.

Reported-by: syzbot+bd8cc73d665590a1fcad@syzkaller.appspotmail.com
Fixes: 50717a37db032 ("net/smc: nonblocking connect rework")
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/smc: do not schedule tx_work in SMC_CLOSED state
Ursula Braun [Fri, 2 Aug 2019 08:16:38 +0000 (10:16 +0200)]
net/smc: do not schedule tx_work in SMC_CLOSED state

The setsockopts options TCP_NODELAY and TCP_CORK may schedule the
tx worker. Make sure the socket is not yet moved into SMC_CLOSED
state (for instance by a shutdown SHUT_RDWR call).

Reported-by: syzbot+92209502e7aab127c75f@syzkaller.appspotmail.com
Reported-by: syzbot+b972214bb803a343f4fe@syzkaller.appspotmail.com
Fixes: 01d2f7e2cdd31 ("net/smc: sockopts TCP_NODELAY and TCP_CORK")
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agogve: Fix case where desc_cnt and data_cnt can get out of sync
Catherine Sullivan [Thu, 1 Aug 2019 23:07:31 +0000 (16:07 -0700)]
gve: Fix case where desc_cnt and data_cnt can get out of sync

desc_cnt and data_cnt should always be equal. In the case of a dropped
packet desc_cnt was still getting updated (correctly), data_cnt
was not. To eliminate this bug and prevent it from recurring this
patch combines them into one ring level cnt.

Signed-off-by: Catherine Sullivan <csully@google.com>
Reviewed-by: Sagi Shahar <sagis@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoipv6: Fix unbalanced rcu locking in rt6_update_exception_stamp_rt
David Ahern [Thu, 1 Aug 2019 21:36:35 +0000 (14:36 -0700)]
ipv6: Fix unbalanced rcu locking in rt6_update_exception_stamp_rt

The nexthop path in rt6_update_exception_stamp_rt needs to call
rcu_read_unlock if it fails to find a fib6_nh match rather than
just returning.

Fixes: e659ba31d806 ("ipv6: Handle all fib6_nh in a nexthop in exception handling")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoselftests/tls: add a litmus test for the socket reuse through shutdown
Jakub Kicinski [Thu, 1 Aug 2019 21:36:02 +0000 (14:36 -0700)]
selftests/tls: add a litmus test for the socket reuse through shutdown

Make sure that shutdown never works, and at the same time document how
I tested to came to the conclusion that currently reuse is not possible.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/tls: partially revert fix transition through disconnect with close
Jakub Kicinski [Thu, 1 Aug 2019 21:36:01 +0000 (14:36 -0700)]
net/tls: partially revert fix transition through disconnect with close

Looks like we were slightly overzealous with the shutdown()
cleanup. Even though the sock->sk_state can reach CLOSED again,
socket->state will not got back to SS_UNCONNECTED once
connections is ESTABLISHED. Meaning we will see EISCONN if
we try to reconnect, and EINVAL if we try to listen.

Only listen sockets can be shutdown() and reused, but since
ESTABLISHED sockets can never be re-connected() or used for
listen() we don't need to try to clean up the ULP state early.

Fixes: 32857cf57f92 ("net/tls: fix transition through disconnect with close")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'net-fix-regressions-for-generic-XDP'
David S. Miller [Mon, 5 Aug 2019 18:17:40 +0000 (11:17 -0700)]
Merge branch 'net-fix-regressions-for-generic-XDP'

Jesper Dangaard Brouer says:

====================
net: fix regressions for generic-XDP

Thanks to Brandon Cazander, who wrote a very detailed bug report that
even used perf probe's on xdp-newbies mailing list, we discovered that
generic-XDP contains some regressions when using bpf_xdp_adjust_head().

First issue were that my selftests script, that use bpf_xdp_adjust_head(),
by mistake didn't use generic-XDP any-longer. That selftest should have
caught the real regression introduced in commit 458bf2f224f0 ("net: core:
support XDP generic on stacked devices.").

To verify this patchset fix the regressions, you can invoked manually via:

  cd tools/testing/selftests/bpf/
  sudo ./test_xdp_vlan_mode_generic.sh
  sudo ./test_xdp_vlan_mode_native.sh
====================

Link: https://www.spinics.net/lists/xdp-newbies/msg01231.html
Fixes: 458bf2f224f0 ("net: core: support XDP generic on stacked devices.")
Reported by: Brandon Cazander <brandon.cazander@multapplied.net>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: fix bpf_xdp_adjust_head regression for generic-XDP
Jesper Dangaard Brouer [Thu, 1 Aug 2019 18:00:31 +0000 (20:00 +0200)]
net: fix bpf_xdp_adjust_head regression for generic-XDP

When generic-XDP was moved to a later processing step by commit
458bf2f224f0 ("net: core: support XDP generic on stacked devices.")
a regression was introduced when using bpf_xdp_adjust_head.

The issue is that after this commit the skb->network_header is now
changed prior to calling generic XDP and not after. Thus, if the header
is changed by XDP (via bpf_xdp_adjust_head), then skb->network_header
also need to be updated again.  Fix by calling skb_reset_network_header().

Fixes: 458bf2f224f0 ("net: core: support XDP generic on stacked devices.")
Reported-by: Brandon Cazander <brandon.cazander@multapplied.net>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoselftests/bpf: reduce time to execute test_xdp_vlan.sh
Jesper Dangaard Brouer [Thu, 1 Aug 2019 18:00:26 +0000 (20:00 +0200)]
selftests/bpf: reduce time to execute test_xdp_vlan.sh

Given the increasing number of BPF selftests, it makes sense to
reduce the time to execute these tests.  The ping parameters are
adjusted to reduce the time from measures 9 sec to approx 2.8 sec.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoselftests/bpf: add wrapper scripts for test_xdp_vlan.sh
Jesper Dangaard Brouer [Thu, 1 Aug 2019 18:00:21 +0000 (20:00 +0200)]
selftests/bpf: add wrapper scripts for test_xdp_vlan.sh

In-order to test both native-XDP (xdpdrv) and generic-XDP (xdpgeneric)
create two wrapper test scripts, that start the test_xdp_vlan.sh script
with these modes.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agobpf: fix XDP vlan selftests test_xdp_vlan.sh
Jesper Dangaard Brouer [Thu, 1 Aug 2019 18:00:16 +0000 (20:00 +0200)]
bpf: fix XDP vlan selftests test_xdp_vlan.sh

Change BPF selftest test_xdp_vlan.sh to (default) use generic XDP.

This selftest was created together with a fix for generic XDP, in commit
297249569932 ("net: fix generic XDP to handle if eth header was
mangled"). And was suppose to catch if generic XDP was broken again.

The tests are using veth and assumed that veth driver didn't support
native driver XDP, thus it used the (ip link set) 'xdp' attach that fell
back to generic-XDP. But veth gained native-XDP support in 948d4f214fde
("veth: Add driver XDP"), which caused this test script to use
native-XDP.

Fixes: 948d4f214fde ("veth: Add driver XDP")
Fixes: 97396ff0bc2d ("selftests/bpf: add XDP selftests for modifying and popping VLAN headers")
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet/mlx5e: always initialize frag->last_in_page
Qian Cai [Thu, 1 Aug 2019 13:52:54 +0000 (09:52 -0400)]
net/mlx5e: always initialize frag->last_in_page

The commit 069d11465a80 ("net/mlx5e: RX, Enhance legacy Receive Queue
memory scheme") introduced an undefined behaviour below due to
"frag->last_in_page" is only initialized in mlx5e_init_frags_partition()
when,

if (next_frag.offset + frag_info[f].frag_stride > PAGE_SIZE)

or after bailed out the loop,

for (i = 0; i < mlx5_wq_cyc_get_size(&rq->wqe.wq); i++)

As the result, there could be some "frag" have uninitialized
value of "last_in_page".

Later, get_frag() obtains those "frag" and check "frag->last_in_page" in
mlx5e_put_rx_frag() and triggers the error during boot. Fix it by always
initializing "frag->last_in_page" to "false" in
mlx5e_init_frags_partition().

UBSAN: Undefined behaviour in
drivers/net/ethernet/mellanox/mlx5/core/en_rx.c:325:12
load of value 170 is not a valid value for type 'bool' (aka '_Bool')
Call trace:
 dump_backtrace+0x0/0x264
 show_stack+0x20/0x2c
 dump_stack+0xb0/0x104
 __ubsan_handle_load_invalid_value+0x104/0x128
 mlx5e_handle_rx_cqe+0x8e8/0x12cc [mlx5_core]
 mlx5e_poll_rx_cq+0xca8/0x1a94 [mlx5_core]
 mlx5e_napi_poll+0x17c/0xa30 [mlx5_core]
 net_rx_action+0x248/0x940
 __do_softirq+0x350/0x7b8
 irq_exit+0x200/0x26c
 __handle_domain_irq+0xc8/0x128
 gic_handle_irq+0x138/0x228
 el1_irq+0xb8/0x140
 arch_cpu_idle+0x1a4/0x348
 do_idle+0x114/0x1b0
 cpu_startup_entry+0x24/0x28
 rest_init+0x1ac/0x1dc
 arch_call_rest_init+0x10/0x18
 start_kernel+0x4d4/0x57c

Fixes: 069d11465a80 ("net/mlx5e: RX, Enhance legacy Receive Queue memory scheme")
Signed-off-by: Qian Cai <cai@lca.pw>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: sched: use temporary variable for actions indexes
Dmytro Linkin [Thu, 1 Aug 2019 13:02:51 +0000 (13:02 +0000)]
net: sched: use temporary variable for actions indexes

Currently init call of all actions (except ipt) init their 'parm'
structure as a direct pointer to nla data in skb. This leads to race
condition when some of the filter actions were initialized successfully
(and were assigned with idr action index that was written directly
into nla data), but then were deleted and retried (due to following
action module missing or classifier-initiated retry), in which case
action init code tries to insert action to idr with index that was
assigned on previous iteration. During retry the index can be reused
by another action that was inserted concurrently, which causes
unintended action sharing between filters.
To fix described race condition, save action idr index to temporary
stack-allocated variable instead on nla data.

Fixes: 0190c1d452a9 ("net: sched: atomically check-allocate action")
Signed-off-by: Dmytro Linkin <dmitrolin@mellanox.com>
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: dsa: mv88e6xxx: drop adjust_link to enabled phylink
Hubert Feurstein [Wed, 31 Jul 2019 15:42:39 +0000 (17:42 +0200)]
net: dsa: mv88e6xxx: drop adjust_link to enabled phylink

We have to drop the adjust_link callback in order to finally migrate to
phylink.

Otherwise we get the following warning during startup:
  "mv88e6xxx 2188000.ethernet-1:10: Using legacy PHYLIB callbacks. Please
   migrate to PHYLINK!"

The warning is generated in the function dsa_port_link_register_of in
dsa/port.c:

  int dsa_port_link_register_of(struct dsa_port *dp)
  {
   struct dsa_switch *ds = dp->ds;

   if (!ds->ops->adjust_link)
   return dsa_port_phylink_register(dp);

   dev_warn(ds->dev,
    "Using legacy PHYLIB callbacks. Please migrate to PHYLINK!\n");
   [...]
  }

Signed-off-by: Hubert Feurstein <h.feurstein@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoNFC: nfcmrvl: fix gpio-handling regression
Johan Hovold [Mon, 5 Aug 2019 10:00:55 +0000 (12:00 +0200)]
NFC: nfcmrvl: fix gpio-handling regression

Fix two reset-gpio sanity checks which were never converted to use
gpio_is_valid(), and make sure to use -EINVAL to indicate a missing
reset line also for the UART-driver module parameter and for the USB
driver.

This specifically prevents the UART and USB drivers from incidentally
trying to request and use gpio 0, and also avoids triggering a WARN() in
gpio_to_desc() during probe when no valid reset line has been specified.

Fixes: e33a3f84f88f ("NFC: nfcmrvl: allow gpio 0 for reset signalling")
Reported-by: syzbot+cf35b76f35e068a1107f@syzkaller.appspotmail.com
Tested-by: syzbot+cf35b76f35e068a1107f@syzkaller.appspotmail.com
Signed-off-by: Johan Hovold <johan@kernel.org>
5 years agonet/socket: fix GCC8+ Wpacked-not-aligned warnings
Qian Cai [Tue, 30 Jul 2019 15:30:33 +0000 (11:30 -0400)]
net/socket: fix GCC8+ Wpacked-not-aligned warnings

There are a lot of those warnings with GCC8+ 64-bit,

In file included from ./include/linux/sctp.h:42,
                 from net/core/skbuff.c:47:
./include/uapi/linux/sctp.h:395:1: warning: alignment 4 of 'struct
sctp_paddr_change' is less than 8 [-Wpacked-not-aligned]
 } __attribute__((packed, aligned(4)));
 ^
./include/uapi/linux/sctp.h:728:1: warning: alignment 4 of 'struct
sctp_setpeerprim' is less than 8 [-Wpacked-not-aligned]
 } __attribute__((packed, aligned(4)));
 ^
./include/uapi/linux/sctp.h:727:26: warning: 'sspp_addr' offset 4 in
'struct sctp_setpeerprim' isn't aligned to 8 [-Wpacked-not-aligned]
  struct sockaddr_storage sspp_addr;
                          ^~~~~~~~~
./include/uapi/linux/sctp.h:741:1: warning: alignment 4 of 'struct
sctp_prim' is less than 8 [-Wpacked-not-aligned]
 } __attribute__((packed, aligned(4)));
 ^
./include/uapi/linux/sctp.h:740:26: warning: 'ssp_addr' offset 4 in
'struct sctp_prim' isn't aligned to 8 [-Wpacked-not-aligned]
  struct sockaddr_storage ssp_addr;
                          ^~~~~~~~
./include/uapi/linux/sctp.h:792:1: warning: alignment 4 of 'struct
sctp_paddrparams' is less than 8 [-Wpacked-not-aligned]
 } __attribute__((packed, aligned(4)));
 ^
./include/uapi/linux/sctp.h:784:26: warning: 'spp_address' offset 4 in
'struct sctp_paddrparams' isn't aligned to 8 [-Wpacked-not-aligned]
  struct sockaddr_storage spp_address;
                          ^~~~~~~~~~~
./include/uapi/linux/sctp.h:905:1: warning: alignment 4 of 'struct
sctp_paddrinfo' is less than 8 [-Wpacked-not-aligned]
 } __attribute__((packed, aligned(4)));
 ^
./include/uapi/linux/sctp.h:899:26: warning: 'spinfo_address' offset 4
in 'struct sctp_paddrinfo' isn't aligned to 8 [-Wpacked-not-aligned]
  struct sockaddr_storage spinfo_address;
                          ^~~~~~~~~~~~~~

This is because the commit 20c9c825b12f ("[SCTP] Fix SCTP socket options
to work with 32-bit apps on 64-bit kernels.") added "packed, aligned(4)"
GCC attributes to some structures but one of the members, i.e, "struct
sockaddr_storage" in those structures has the attribute,
"aligned(__alignof__ (struct sockaddr *)" which is 8-byte on 64-bit
systems, so the commit overwrites the designed alignments for
"sockaddr_storage".

To fix this, "struct sockaddr_storage" needs to be aligned to 4-byte as
it is only used in those packed sctp structure which is part of UAPI,
and "struct __kernel_sockaddr_storage" is used in some other
places of UAPI that need not to change alignments in order to not
breaking userspace.

Use an implicit alignment for "struct __kernel_sockaddr_storage" so it
can keep the same alignments as a member in both packed and un-packed
structures without breaking UAPI.

Suggested-by: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: Qian Cai <cai@lca.pw>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agor8152: fix typo in register name
Kevin Lo [Thu, 1 Aug 2019 03:29:38 +0000 (11:29 +0800)]
r8152: fix typo in register name

It is likely that PAL_BDC_CR should be PLA_BDC_CR.

Signed-off-by: Kevin Lo <kevlo@kevlo.org>
Acked-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: phy: fix race in genphy_update_link
Heiner Kallweit [Wed, 31 Jul 2019 21:05:10 +0000 (23:05 +0200)]
net: phy: fix race in genphy_update_link

In phy_start_aneg() autoneg is started, and immediately after that
link and autoneg status are read. As reported in [0] it can happen that
at time of this read the PHY has reset the "aneg complete" bit but not
yet the "link up" bit, what can result in a false link-up detection.
To fix this don't report link as up if we're in aneg mode and PHY
doesn't signal "aneg complete".

[0] https://marc.info/?t=156413509900003&r=1&w=2

Fixes: 4950c2ba49cc ("net: phy: fix autoneg mismatch case in genphy_read_status")
Reported-by: liuyonglong <liuyonglong@huawei.com>
Tested-by: liuyonglong <liuyonglong@huawei.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoenetc: Select PHYLIB while CONFIG_FSL_ENETC_VF is set
YueHaibing [Thu, 1 Aug 2019 01:24:19 +0000 (09:24 +0800)]
enetc: Select PHYLIB while CONFIG_FSL_ENETC_VF is set

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>
5 years agonet/ethernet/qlogic/qed: force the string buffer NULL-terminated
Wang Xiayang [Wed, 31 Jul 2019 08:15:42 +0000 (16:15 +0800)]
net/ethernet/qlogic/qed: force the string buffer NULL-terminated

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>
5 years agoatm: iphase: Fix Spectre v1 vulnerability
Gustavo A. R. Silva [Wed, 31 Jul 2019 03:21:41 +0000 (22:21 -0500)]
atm: iphase: Fix Spectre v1 vulnerability

board is controlled by user-space, hence leading to a potential
exploitation of the Spectre variant 1 vulnerability.

This issue was detected with the help of Smatch:

drivers/atm/iphase.c:2765 ia_ioctl() warn: potential spectre issue 'ia_dev' [r] (local cap)
drivers/atm/iphase.c:2774 ia_ioctl() warn: possible spectre second half.  'iadev'
drivers/atm/iphase.c:2782 ia_ioctl() warn: possible spectre second half.  'iadev'
drivers/atm/iphase.c:2816 ia_ioctl() warn: possible spectre second half.  'iadev'
drivers/atm/iphase.c:2823 ia_ioctl() warn: possible spectre second half.  'iadev'
drivers/atm/iphase.c:2830 ia_ioctl() warn: potential spectre issue '_ia_dev' [r] (local cap)
drivers/atm/iphase.c:2845 ia_ioctl() warn: possible spectre second half.  'iadev'
drivers/atm/iphase.c:2856 ia_ioctl() warn: possible spectre second half.  'iadev'

Fix this by sanitizing board before using it to index ia_dev and _ia_dev

Notice that given that speculation windows are large, the policy is
to kill the speculation on the first load and not worry if it can be
completed with a dependent load/store [1].

[1] https://lore.kernel.org/lkml/20180423164740.GY17484@dhcp22.suse.cz/

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agohv_sock: Fix hang when a connection is closed
Dexuan Cui [Wed, 31 Jul 2019 01:25:45 +0000 (01:25 +0000)]
hv_sock: Fix hang when a connection is closed

There is a race condition for an established connection that is being closed
by the guest: the refcnt is 4 at the end of hvs_release() (Note: here the
'remove_sock' is false):

1 for the initial value;
1 for the sk being in the bound list;
1 for the sk being in the connected list;
1 for the delayed close_work.

After hvs_release() finishes, __vsock_release() -> sock_put(sk) *may*
decrease the refcnt to 3.

Concurrently, hvs_close_connection() runs in another thread:
  calls vsock_remove_sock() to decrease the refcnt by 2;
  call sock_put() to decrease the refcnt to 0, and free the sk;
  next, the "release_sock(sk)" may hang due to use-after-free.

In the above, after hvs_release() finishes, if hvs_close_connection() runs
faster than "__vsock_release() -> sock_put(sk)", then there is not any issue,
because at the beginning of hvs_close_connection(), the refcnt is still 4.

The issue can be resolved if an extra reference is taken when the
connection is established.

Fixes: a9eeb998c28d ("hv_sock: Add support for delayed close")
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Sunil Muthuswamy <sunilmut@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: usb: pegasus: fix improper read if get_registers() fail
Denis Kirjanov [Tue, 30 Jul 2019 13:13:57 +0000 (15:13 +0200)]
net: usb: pegasus: fix improper read if get_registers() fail

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>
5 years agotipc: compat: allow tipc commands without arguments
Taras Kondratiuk [Mon, 29 Jul 2019 22:15:07 +0000 (22:15 +0000)]
tipc: compat: allow tipc commands without arguments

Commit 2753ca5d9009 ("tipc: fix uninit-value in tipc_nl_compat_doit")
broke older tipc tools that use compat interface (e.g. tipc-config from
tipcutils package):

% tipc-config -p
operation not supported

The commit started to reject TIPC netlink compat messages that do not
have attributes. It is too restrictive because some of such messages are
valid (they don't need any arguments):

% grep 'tx none' include/uapi/linux/tipc_config.h
#define  TIPC_CMD_NOOP              0x0000    /* tx none, rx none */
#define  TIPC_CMD_GET_MEDIA_NAMES   0x0002    /* tx none, rx media_name(s) */
#define  TIPC_CMD_GET_BEARER_NAMES  0x0003    /* tx none, rx bearer_name(s) */
#define  TIPC_CMD_SHOW_PORTS        0x0006    /* tx none, rx ultra_string */
#define  TIPC_CMD_GET_REMOTE_MNG    0x4003    /* tx none, rx unsigned */
#define  TIPC_CMD_GET_MAX_PORTS     0x4004    /* tx none, rx unsigned */
#define  TIPC_CMD_GET_NETID         0x400B    /* tx none, rx unsigned */
#define  TIPC_CMD_NOT_NET_ADMIN     0xC001    /* tx none, rx none */

This patch relaxes the original fix and rejects messages without
arguments only if such arguments are expected by a command (reg_type is
non zero).

Fixes: 2753ca5d9009 ("tipc: fix uninit-value in tipc_nl_compat_doit")
Cc: stable@vger.kernel.org
Signed-off-by: Taras Kondratiuk <takondra@cisco.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'net-Manufacturer-names-and-spelling-fixes'
David S. Miller [Thu, 1 Aug 2019 17:45:49 +0000 (13:45 -0400)]
Merge branch 'net-Manufacturer-names-and-spelling-fixes'

Geert Uytterhoeven says:

====================
net: Manufacturer names and spelling fixes

This is a set of fixes for (some blatantly) wrong manufacturer names and
various spelling issues, mostly in Kconfig help texts.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: samsung: Spelling s/case/cause/
Geert Uytterhoeven [Wed, 31 Jul 2019 13:22:16 +0000 (15:22 +0200)]
net: samsung: Spelling s/case/cause/

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: packetengines: Fix manufacturer spelling and capitalization
Geert Uytterhoeven [Wed, 31 Jul 2019 13:22:15 +0000 (15:22 +0200)]
net: packetengines: Fix manufacturer spelling and capitalization

Use "Packet Engines" consistently.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: nixge: Spelling s/Instrument/Instruments/
Geert Uytterhoeven [Wed, 31 Jul 2019 13:22:14 +0000 (15:22 +0200)]
net: nixge: Spelling s/Instrument/Instruments/

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: ixp4xx: Spelling s/XSacle/XScale/
Geert Uytterhoeven [Wed, 31 Jul 2019 13:22:13 +0000 (15:22 +0200)]
net: ixp4xx: Spelling s/XSacle/XScale/

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: broadcom: Fix manufacturer name in Kconfig help text
Geert Uytterhoeven [Wed, 31 Jul 2019 13:22:12 +0000 (15:22 +0200)]
net: broadcom: Fix manufacturer name in Kconfig help text

The help text refers to AMD instead of Broadcom, presumably because it
was copied from the former.

Fixes: adfc5217e9db68d3 ("broadcom: Move the Broadcom drivers")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: apple: Fix manufacturer name in Kconfig help text
Geert Uytterhoeven [Wed, 31 Jul 2019 13:22:11 +0000 (15:22 +0200)]
net: apple: Fix manufacturer name in Kconfig help text

The help text refers to IBM instead of Apple, presumably because it was
copied from the former.

Fixes: 8fb6b0908176704a ("bmac/mace/macmace/mac89x0/cs89x0: Move the Macintosh (Apple) drivers")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: amd: Spelling s/case/cause/
Geert Uytterhoeven [Wed, 31 Jul 2019 13:22:10 +0000 (15:22 +0200)]
net: amd: Spelling s/case/cause/

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: 8390: Fix manufacturer name in Kconfig help text
Geert Uytterhoeven [Wed, 31 Jul 2019 13:22:09 +0000 (15:22 +0200)]
net: 8390: Fix manufacturer name in Kconfig help text

The help text refers to Western Digital instead of National
Semiconductor 8390, presumably because it was copied from the former.

Fixes: 644570b830266ff3 ("8390: Move the 8390 related drivers")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agomvpp2: fix panic on module removal
Matteo Croce [Thu, 1 Aug 2019 12:13:30 +0000 (14:13 +0200)]
mvpp2: fix panic on module removal

mvpp2 uses a delayed workqueue to gather traffic statistics.
On module removal the workqueue can be destroyed before calling
cancel_delayed_work_sync() on its works.
Fix it by moving the destroy_workqueue() call after mvpp2_port_remove().
Also remove an unneeded call to flush_workqueue()

    # rmmod mvpp2
    [ 2743.311722] mvpp2 f4000000.ethernet eth1: phy link down 10gbase-kr/10Gbps/Full
    [ 2743.320063] mvpp2 f4000000.ethernet eth1: Link is Down
    [ 2743.572263] mvpp2 f4000000.ethernet eth2: phy link down sgmii/1Gbps/Full
    [ 2743.580076] mvpp2 f4000000.ethernet eth2: Link is Down
    [ 2744.102169] mvpp2 f2000000.ethernet eth0: phy link down 10gbase-kr/10Gbps/Full
    [ 2744.110441] mvpp2 f2000000.ethernet eth0: Link is Down
    [ 2744.115614] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
    [ 2744.115615] Mem abort info:
    [ 2744.115616]   ESR = 0x96000005
    [ 2744.115617]   Exception class = DABT (current EL), IL = 32 bits
    [ 2744.115618]   SET = 0, FnV = 0
    [ 2744.115619]   EA = 0, S1PTW = 0
    [ 2744.115620] Data abort info:
    [ 2744.115621]   ISV = 0, ISS = 0x00000005
    [ 2744.115622]   CM = 0, WnR = 0
    [ 2744.115624] user pgtable: 4k pages, 39-bit VAs, pgdp=0000000422681000
    [ 2744.115626] [0000000000000000] pgd=0000000000000000, pud=0000000000000000
    [ 2744.115630] Internal error: Oops: 96000005 [#1] SMP
    [ 2744.115632] Modules linked in: mvpp2(-) algif_hash af_alg nls_iso8859_1 nls_cp437 vfat fat xhci_plat_hcd m25p80 spi_nor xhci_hcd mtd usbcore i2c_mv64xxx sfp usb_common marvell10g phy_generic spi_orion mdio_i2c i2c_core mvmdio phylink sbsa_gwdt ip_tables x_tables autofs4 [last unloaded: mvpp2]
    [ 2744.115654] CPU: 3 PID: 8357 Comm: kworker/3:2 Not tainted 5.3.0-rc2 #1
    [ 2744.115655] Hardware name: Marvell 8040 MACCHIATOBin Double-shot (DT)
    [ 2744.115665] Workqueue: events_power_efficient phylink_resolve [phylink]
    [ 2744.115669] pstate: a0000085 (NzCv daIf -PAN -UAO)
    [ 2744.115675] pc : __queue_work+0x9c/0x4d8
    [ 2744.115677] lr : __queue_work+0x170/0x4d8
    [ 2744.115678] sp : ffffff801001bd50
    [ 2744.115680] x29: ffffff801001bd50 x28: ffffffc422597600
    [ 2744.115684] x27: ffffff80109ae6f0 x26: ffffff80108e4018
    [ 2744.115688] x25: 0000000000000003 x24: 0000000000000004
    [ 2744.115691] x23: ffffff80109ae6e0 x22: 0000000000000017
    [ 2744.115694] x21: ffffffc42c030000 x20: ffffffc42209e8f8
    [ 2744.115697] x19: 0000000000000000 x18: 0000000000000000
    [ 2744.115699] x17: 0000000000000000 x16: 0000000000000000
    [ 2744.115701] x15: 0000000000000010 x14: ffffffffffffffff
    [ 2744.115702] x13: ffffff8090e2b95f x12: ffffff8010e2b967
    [ 2744.115704] x11: ffffff8010906000 x10: 0000000000000040
    [ 2744.115706] x9 : ffffff80109223b8 x8 : ffffff80109223b0
    [ 2744.115707] x7 : ffffffc42bc00068 x6 : 0000000000000000
    [ 2744.115709] x5 : ffffffc42bc00000 x4 : 0000000000000000
    [ 2744.115710] x3 : 0000000000000000 x2 : 0000000000000000
    [ 2744.115712] x1 : 0000000000000008 x0 : ffffffc42c030000
    [ 2744.115714] Call trace:
    [ 2744.115716]  __queue_work+0x9c/0x4d8
    [ 2744.115718]  delayed_work_timer_fn+0x28/0x38
    [ 2744.115722]  call_timer_fn+0x3c/0x180
    [ 2744.115723]  expire_timers+0x60/0x168
    [ 2744.115724]  run_timer_softirq+0xbc/0x1e8
    [ 2744.115727]  __do_softirq+0x128/0x320
    [ 2744.115731]  irq_exit+0xa4/0xc0
    [ 2744.115734]  __handle_domain_irq+0x70/0xc0
    [ 2744.115735]  gic_handle_irq+0x58/0xa8
    [ 2744.115737]  el1_irq+0xb8/0x140
    [ 2744.115738]  console_unlock+0x3a0/0x568
    [ 2744.115740]  vprintk_emit+0x200/0x2a0
    [ 2744.115744]  dev_vprintk_emit+0x1c8/0x1e4
    [ 2744.115747]  dev_printk_emit+0x6c/0x7c
    [ 2744.115751]  __netdev_printk+0x104/0x1d8
    [ 2744.115752]  netdev_printk+0x60/0x70
    [ 2744.115756]  phylink_resolve+0x38c/0x3c8 [phylink]
    [ 2744.115758]  process_one_work+0x1f8/0x448
    [ 2744.115760]  worker_thread+0x54/0x500
    [ 2744.115762]  kthread+0x12c/0x130
    [ 2744.115764]  ret_from_fork+0x10/0x1c
    [ 2744.115768] Code: aa1403e0 97fffbbe aa0003f5 b4000700 (f9400261)

Fixes: 118d6298f6f0 ("net: mvpp2: add ethtool GOP statistics")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Acked-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: stmmac: Use netif_tx_napi_add() for TX polling function
Frode Isaksen [Tue, 30 Jul 2019 11:38:14 +0000 (13:38 +0200)]
net: stmmac: Use netif_tx_napi_add() for TX polling function

This variant of netif_napi_add() should be used from drivers
using NAPI to exclusively poll a TX queue.

Signed-off-by: Frode Isaksen <fisaksen@baylibre.com>
Tested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: bridge: mcast: don't delete permanent entries when fast leave is enabled
Nikolay Aleksandrov [Tue, 30 Jul 2019 11:21:00 +0000 (14:21 +0300)]
net: bridge: mcast: don't delete permanent entries when fast leave is enabled

When permanent entries were introduced by the commit below, they were
exempt from timing out and thus igmp leave wouldn't affect them unless
fast leave was enabled on the port which was added before permanent
entries existed. It shouldn't matter if fast leave is enabled or not
if the user added a permanent entry it shouldn't be deleted on igmp
leave.

Before:
$ echo 1 > /sys/class/net/eth4/brport/multicast_fast_leave
$ bridge mdb add dev br0 port eth4 grp 229.1.1.1 permanent
$ bridge mdb show
dev br0 port eth4 grp 229.1.1.1 permanent

< join and leave 229.1.1.1 on eth4 >

$ bridge mdb show
$

After:
$ echo 1 > /sys/class/net/eth4/brport/multicast_fast_leave
$ bridge mdb add dev br0 port eth4 grp 229.1.1.1 permanent
$ bridge mdb show
dev br0 port eth4 grp 229.1.1.1 permanent

< join and leave 229.1.1.1 on eth4 >

$ bridge mdb show
dev br0 port eth4 grp 229.1.1.1 permanent

Fixes: ccb1c31a7a87 ("bridge: add flags to distinguish permanent mdb entires")
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: phy: phy_led_triggers: Fix a possible null-pointer dereference in phy_led_trigge...
Jia-Ju Bai [Tue, 30 Jul 2019 08:08:13 +0000 (16:08 +0800)]
net: phy: phy_led_triggers: Fix a possible null-pointer dereference in phy_led_trigger_change_speed()

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>
5 years agoselftests/tls: fix TLS tests with CONFIG_TLS=n
Jakub Kicinski [Mon, 29 Jul 2019 23:08:03 +0000 (16:08 -0700)]
selftests/tls: fix TLS tests with CONFIG_TLS=n

Build bot reports some recent TLS tests are failing
with CONFIG_TLS=n. Correct the expected return code
and skip TLS installation if not supported.

Tested with CONFIG_TLS=n and CONFIG_TLS=m.

Reported-by: kernel test robot <rong.a.chen@intel.com>
Fixes: cf32526c8842 ("selftests/tls: add a test for ULP but no keys")
Fixes: 65d41fb317c6 ("selftests/tls: add a bidirectional test")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoisdn: hfcsusb: Fix mISDN driver crash caused by transfer buffer on the stack
Juliana Rodrigueiro [Wed, 31 Jul 2019 13:17:23 +0000 (15:17 +0200)]
isdn: hfcsusb: Fix mISDN driver crash caused by transfer buffer on the stack

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>
5 years agonet: mediatek: Drop unneeded dependency on NET_VENDOR_MEDIATEK
Geert Uytterhoeven [Wed, 31 Jul 2019 13:12:02 +0000 (15:12 +0200)]
net: mediatek: Drop unneeded dependency on NET_VENDOR_MEDIATEK

The whole block is protected by "if NET_VENDOR_MEDIATEK", so there is
no need for individual driver config symbols to duplicate this
dependency.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge tag 'mac80211-for-davem-2019-07-31' of git://git.kernel.org/pub/scm/linux/kerne...
David S. Miller [Wed, 31 Jul 2019 15:51:34 +0000 (08:51 -0700)]
Merge tag 'mac80211-for-davem-2019-07-31' of git://git./linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
Just a few fixes:
 * revert NETIF_F_LLTX usage as it caused problems
 * avoid warning on WMM parameters from AP that are too short
 * fix possible null-ptr dereference in hwsim
 * fix interface combinations with 4-addr and crypto control
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
David S. Miller [Wed, 31 Jul 2019 15:49:09 +0000 (08:49 -0700)]
Merge git://git./pub/scm/linux/kernel/git/pablo/nf

Pablo Neira Ayuso says:

====================
netfilter fixes for net

The following patchset contains Netfilter fixes for your net tree:

1) memleak in ebtables from the error path for the 32/64 compat layer,
   from Florian Westphal.

2) Fix inverted meta ifname/ifidx matching when no interface is set
   on either from the input/output path, from Phil Sutter.

3) Remove goto label in nft_meta_bridge, also from Phil.

4) Missing include guard in xt_connlabel, from Masahiro Yamada.

5) Two patch to fix ipset destination MAC matching coming from
   Stephano Brivio, via Jozsef Kadlecsik.

6) Fix set rename and listing concurrency problem, from Shijie Luo.
   Patch also coming via Jozsef Kadlecsik.

7) ebtables 32/64 compat missing base chain policy in rule count,
   from Florian Westphal.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: ag71xx: Use GFP_KERNEL instead of GFP_ATOMIC in 'ag71xx_rings_init()'
Christophe JAILLET [Wed, 31 Jul 2019 08:06:48 +0000 (10:06 +0200)]
net: ag71xx: Use GFP_KERNEL instead of GFP_ATOMIC in 'ag71xx_rings_init()'

There is no need to use GFP_ATOMIC here, GFP_KERNEL should be enough.
The 'kcalloc()' just a few lines above, already uses GFP_KERNEL.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: ethernet: et131x: Use GFP_KERNEL instead of GFP_ATOMIC when allocating tx_ring...
Christophe JAILLET [Wed, 31 Jul 2019 07:38:42 +0000 (09:38 +0200)]
net: ethernet: et131x: Use GFP_KERNEL instead of GFP_ATOMIC when allocating tx_ring->tcb_ring

There is no good reason to use GFP_ATOMIC here. Other memory allocations
are performed with GFP_KERNEL (see other 'dma_alloc_coherent()' below and
'kzalloc()' in 'et131x_rx_dma_memory_alloc()')

Use GFP_KERNEL which should be enough.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agodrop_monitor: Add missing uAPI file to MAINTAINERS file
Ido Schimmel [Wed, 31 Jul 2019 06:38:19 +0000 (09:38 +0300)]
drop_monitor: Add missing uAPI file to MAINTAINERS file

Fixes: 6e43650cee64 ("add maintainer for network drop monitor kernel service")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge branch 'mlxsw-Two-small-fixes'
David S. Miller [Wed, 31 Jul 2019 15:22:12 +0000 (08:22 -0700)]
Merge branch 'mlxsw-Two-small-fixes'

Ido Schimmel says:

====================
mlxsw: Two small fixes

Patch #1 from Jiri fixes the error path of the module initialization
function. Found during manual code inspection.

Patch #2 from Petr further reduces the default shared buffer pool sizes
in order to work around a problem that was originally described in
commit e891ce1dd2a5 ("mlxsw: spectrum_buffers: Reduce pool size on
Spectrum-2").
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agomlxsw: spectrum_buffers: Further reduce pool size on Spectrum-2
Petr Machata [Wed, 31 Jul 2019 06:33:15 +0000 (09:33 +0300)]
mlxsw: spectrum_buffers: Further reduce pool size on Spectrum-2

In commit e891ce1dd2a5 ("mlxsw: spectrum_buffers: Reduce pool size on
Spectrum-2"), pool size was reduced to mitigate a problem in port buffer
usage of ports split four ways. It turns out that this work around does not
solve the issue, and a further reduction is required.

Thus reduce the size of pool 0 by another 2.7 MiB, and round down to the
whole number of cells.

Fixes: e891ce1dd2a5 ("mlxsw: spectrum_buffers: Reduce pool size on Spectrum-2")
Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agomlxsw: spectrum: Fix error path in mlxsw_sp_module_init()
Jiri Pirko [Wed, 31 Jul 2019 06:33:14 +0000 (09:33 +0300)]
mlxsw: spectrum: Fix error path in mlxsw_sp_module_init()

In case of sp2 pci driver registration fail, fix the error path to
start with sp1 pci driver unregister.

Fixes: c3ab435466d5 ("mlxsw: spectrum: Extend to support Spectrum-2 ASIC")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: dsa: qca8k: enable port flow control
xiaofeis [Sun, 28 Jul 2019 00:57:50 +0000 (08:57 +0800)]
net: dsa: qca8k: enable port flow control

Set phy device advertising to enable MAC flow control.

Signed-off-by: Xiaofei Shen <xiaofeis@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agocompat_ioctl: pppoe: fix PPPOEIOCSFWD handling
Arnd Bergmann [Tue, 30 Jul 2019 19:25:20 +0000 (21:25 +0200)]
compat_ioctl: pppoe: fix PPPOEIOCSFWD handling

Support for handling the PPPOEIOCSFWD ioctl in compat mode was added in
linux-2.5.69 along with hundreds of other commands, but was always broken
sincen only the structure is compatible, but the command number is not,
due to the size being sizeof(size_t), or at first sizeof(sizeof((struct
sockaddr_pppox)), which is different on 64-bit architectures.

Guillaume Nault adds:

  And the implementation was broken until 2016 (see 29e73269aa4d ("pppoe:
  fix reference counting in PPPoE proxy")), and nobody ever noticed. I
  should probably have removed this ioctl entirely instead of fixing it.
  Clearly, it has never been used.

Fix it by adding a compat_ioctl handler for all pppoe variants that
translates the command number and then calls the regular ioctl function.

All other ioctl commands handled by pppoe are compatible between 32-bit
and 64-bit, and require compat_ptr() conversion.

This should apply to all stable kernels.

Acked-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agotipc: fix unitilized skb list crash
Jon Maloy [Tue, 30 Jul 2019 18:19:10 +0000 (20:19 +0200)]
tipc: fix unitilized skb list crash

Our test suite somtimes provokes the following crash:

Description of problem:
[ 1092.597234] BUG: unable to handle kernel NULL pointer dereference at 00000000000000e8
[ 1092.605072] PGD 0 P4D 0
[ 1092.607620] Oops: 0000 [#1] SMP PTI
[ 1092.611118] CPU: 37 PID: 0 Comm: swapper/37 Kdump: loaded Not tainted 4.18.0-122.el8.x86_64 #1
[ 1092.619724] Hardware name: Dell Inc. PowerEdge R740/08D89F, BIOS 1.3.7 02/08/2018
[ 1092.627215] RIP: 0010:tipc_mcast_filter_msg+0x93/0x2d0 [tipc]
[ 1092.632955] Code: 0f 84 aa 01 00 00 89 cf 4d 01 ca 4c 8b 26 c1 ef 19 83 e7 0f 83 ff 0c 4d 0f 45 d1 41 8b 6a 10 0f cd 4c 39 e6 0f 84 81 01 00 00 <4d> 8b 9c 24 e8 00 00 00 45 8b 13 41 0f ca 44 89 d7 c1 ef 13 83 e7
[ 1092.651703] RSP: 0018:ffff929e5fa83a18 EFLAGS: 00010282
[ 1092.656927] RAX: ffff929e3fb38100 RBX: 00000000069f29ee RCX: 00000000416c0045
[ 1092.664058] RDX: ffff929e5fa83a88 RSI: ffff929e31a28420 RDI: 0000000000000000
[ 1092.671209] RBP: 0000000029b11821 R08: 0000000000000000 R09: ffff929e39b4407a
[ 1092.678343] R10: ffff929e39b4407a R11: 0000000000000007 R12: 0000000000000000
[ 1092.685475] R13: 0000000000000001 R14: ffff929e3fb38100 R15: ffff929e39b4407a
[ 1092.692614] FS:  0000000000000000(0000) GS:ffff929e5fa80000(0000) knlGS:0000000000000000
[ 1092.700702] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1092.706447] CR2: 00000000000000e8 CR3: 000000031300a004 CR4: 00000000007606e0
[ 1092.713579] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1092.720712] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1092.727843] PKRU: 55555554
[ 1092.730556] Call Trace:
[ 1092.733010]  <IRQ>
[ 1092.735034]  tipc_sk_filter_rcv+0x7ca/0xb80 [tipc]
[ 1092.739828]  ? __kmalloc_node_track_caller+0x1cb/0x290
[ 1092.744974]  ? dev_hard_start_xmit+0xa5/0x210
[ 1092.749332]  tipc_sk_rcv+0x389/0x640 [tipc]
[ 1092.753519]  tipc_sk_mcast_rcv+0x23c/0x3a0 [tipc]
[ 1092.758224]  tipc_rcv+0x57a/0xf20 [tipc]
[ 1092.762154]  ? ktime_get_real_ts64+0x40/0xe0
[ 1092.766432]  ? tpacket_rcv+0x50/0x9f0
[ 1092.770098]  tipc_l2_rcv_msg+0x4a/0x70 [tipc]
[ 1092.774452]  __netif_receive_skb_core+0xb62/0xbd0
[ 1092.779164]  ? enqueue_entity+0xf6/0x630
[ 1092.783084]  ? kmem_cache_alloc+0x158/0x1c0
[ 1092.787272]  ? __build_skb+0x25/0xd0
[ 1092.790849]  netif_receive_skb_internal+0x42/0xf0
[ 1092.795557]  napi_gro_receive+0xba/0xe0
[ 1092.799417]  mlx5e_handle_rx_cqe+0x83/0xd0 [mlx5_core]
[ 1092.804564]  mlx5e_poll_rx_cq+0xd5/0x920 [mlx5_core]
[ 1092.809536]  mlx5e_napi_poll+0xb2/0xce0 [mlx5_core]
[ 1092.814415]  ? __wake_up_common_lock+0x89/0xc0
[ 1092.818861]  net_rx_action+0x149/0x3b0
[ 1092.822616]  __do_softirq+0xe3/0x30a
[ 1092.826193]  irq_exit+0x100/0x110
[ 1092.829512]  do_IRQ+0x85/0xd0
[ 1092.832483]  common_interrupt+0xf/0xf
[ 1092.836147]  </IRQ>
[ 1092.838255] RIP: 0010:cpuidle_enter_state+0xb7/0x2a0
[ 1092.843221] Code: e8 3e 79 a5 ff 80 7c 24 03 00 74 17 9c 58 0f 1f 44 00 00 f6 c4 02 0f 85 d7 01 00 00 31 ff e8 a0 6b ab ff fb 66 0f 1f 44 00 00 <48> b8 ff ff ff ff f3 01 00 00 4c 29 f3 ba ff ff ff 7f 48 39 c3 7f
[ 1092.861967] RSP: 0018:ffffaa5ec6533e98 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffdd
[ 1092.869530] RAX: ffff929e5faa3100 RBX: 000000fe63dd2092 RCX: 000000000000001f
[ 1092.876665] RDX: 000000fe63dd2092 RSI: 000000003a518aaa RDI: 0000000000000000
[ 1092.883795] RBP: 0000000000000003 R08: 0000000000000004 R09: 0000000000022940
[ 1092.890929] R10: 0000040cb0666b56 R11: ffff929e5faa20a8 R12: ffff929e5faade78
[ 1092.898060] R13: ffffffffb59258f8 R14: 000000fe60f3228d R15: 0000000000000000
[ 1092.905196]  ? cpuidle_enter_state+0x92/0x2a0
[ 1092.909555]  do_idle+0x236/0x280
[ 1092.912785]  cpu_startup_entry+0x6f/0x80
[ 1092.916715]  start_secondary+0x1a7/0x200
[ 1092.920642]  secondary_startup_64+0xb7/0xc0
[...]

The reason is that the skb list tipc_socket::mc_method.deferredq only
is initialized for connectionless sockets, while nothing stops arriving
multicast messages from being filtered by connection oriented sockets,
with subsequent access to the said list.

We fix this by initializing the list unconditionally at socket creation.
This eliminates the crash, while the message still is dropped further
down in tipc_sk_filter_rcv() as it should be.

Reported-by: Li Shuang <shuali@redhat.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMerge tag 'rxrpc-fixes-20190730' of git://git.kernel.org/pub/scm/linux/kernel/git...
David S. Miller [Tue, 30 Jul 2019 17:31:25 +0000 (10:31 -0700)]
Merge tag 'rxrpc-fixes-20190730' of git://git./linux/kernel/git/dhowells/linux-fs

David Howells says:

====================
Here are a couple of fixes for rxrpc:

 (1) Fix a potential deadlock in the peer keepalive dispatcher.

 (2) Fix a missing notification when a UDP sendmsg error occurs in rxrpc.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoenetc: Fix build error without PHYLIB
YueHaibing [Tue, 30 Jul 2019 14:29:59 +0000 (22:29 +0800)]
enetc: Fix build error without PHYLIB

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>
5 years agonet: stmmac: Sync RX Buffer upon allocation
Jose Abreu [Tue, 30 Jul 2019 13:57:16 +0000 (15:57 +0200)]
net: stmmac: Sync RX Buffer upon allocation

With recent changes that introduced support for Page Pool in stmmac, Jon
reported that NFS boot was no longer working on an ARM64 based platform
that had the IP behind an IOMMU.

As Page Pool API does not guarantee DMA syncing because of the use of
DMA_ATTR_SKIP_CPU_SYNC flag, we have to explicit sync the whole buffer upon
re-allocation because we are always re-using same pages.

In fact, ARM64 code invalidates the DMA area upon two situations [1]:
- sync_single_for_cpu(): Invalidates if direction != DMA_TO_DEVICE
- sync_single_for_device(): Invalidates if direction == DMA_FROM_DEVICE

So, as we must invalidate both the current RX buffer and the newly allocated
buffer we propose this fix.

[1] arch/arm64/mm/cache.S

Reported-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Fixes: 2af6106ae949 ("net: stmmac: Introducing support for Page Pool")
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Tested-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agomlxsw: spectrum_ptp: fix duplicated check on orig_egr_types
Colin Ian King [Tue, 30 Jul 2019 11:47:52 +0000 (12:47 +0100)]
mlxsw: spectrum_ptp: fix duplicated check on orig_egr_types

Currently are duplicated checks on orig_egr_types which are
redundant, I believe this is a typo and should actually be
orig_ing_types || orig_egr_types instead of the expression
orig_egr_types || orig_egr_types.  Fix these.

Addresses-Coverity: ("Same on both sides")
Fixes: c6b36bdd04b5 ("mlxsw: spectrum_ptp: Increase parsing depth when PTP is enabled")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: dsa: mv88e6xxx: use link-down-define instead of plain value
Hubert Feurstein [Tue, 30 Jul 2019 10:11:42 +0000 (12:11 +0200)]
net: dsa: mv88e6xxx: use link-down-define instead of plain value

Using the define here makes the code more expressive.

Signed-off-by: Hubert Feurstein <h.feurstein@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: phy: fixed_phy: print gpio error only if gpio node is present
Hubert Feurstein [Tue, 30 Jul 2019 09:46:23 +0000 (11:46 +0200)]
net: phy: fixed_phy: print gpio error only if gpio node is present

It is perfectly ok to not have an gpio attached to the fixed-link node. So
the driver should not throw an error message when the gpio is missing.

Fixes: 5468e82f7034 ("net: phy: fixed-phy: Drop GPIO from fixed_phy_add()")
Signed-off-by: Hubert Feurstein <h.feurstein@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agorxrpc: Fix the lack of notification when sendmsg() fails on a DATA packet
David Howells [Tue, 30 Jul 2019 13:42:50 +0000 (14:42 +0100)]
rxrpc: Fix the lack of notification when sendmsg() fails on a DATA packet

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>
5 years agorxrpc: Fix potential deadlock
David Howells [Tue, 30 Jul 2019 13:42:50 +0000 (14:42 +0100)]
rxrpc: Fix potential deadlock

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>
5 years agoRevert "mac80211: set NETIF_F_LLTX when using intermediate tx queues"
Johannes Berg [Tue, 30 Jul 2019 12:52:07 +0000 (14:52 +0200)]
Revert "mac80211: set NETIF_F_LLTX when using intermediate tx queues"

Revert this for now, it has been reported multiple times that it
completely breaks connectivity on various devices.

Cc: stable@vger.kernel.org
Fixes: 8dbb000ee73b ("mac80211: set NETIF_F_LLTX when using intermediate tx queues")
Reported-by: Jean Delvare <jdelvare@suse.de>
Reported-by: Peter Lebbing <peter@digitalbrains.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
5 years agoMerge branch 'master' of git://blackhole.kfki.hu/nf
Pablo Neira Ayuso [Tue, 30 Jul 2019 11:39:20 +0000 (13:39 +0200)]
Merge branch 'master' of git://blackhole.kfki.hu/nf

Jozsef Kadlecsik says:

====================
ipset patches for the nf tree

- When the support of destination MAC addresses for hash:mac sets was
  introduced, it was forgotten to add the same functionality to hash:ip,mac
  types of sets. The patch from Stefano Brivio adds the missing part.
- When the support of destination MAC addresses for hash:mac sets was
  introduced, a copy&paste error was made in the code of the hash:ip,mac
  and bitmap:ip,mac types: the MAC address in these set types is in
  the second position and not in the first one. Stefano Brivio's patch
  fixes the issue.
- There was still a not properly handled concurrency handling issue
  between renaming and listing sets at the same time, reported by
  Shijie Luo.
====================

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
5 years agonetfilter: ebtables: also count base chain policies
Florian Westphal [Mon, 29 Jul 2019 15:58:10 +0000 (17:58 +0200)]
netfilter: ebtables: also count base chain policies

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>
5 years agonet: smc911x: Mark expected switch fall-through
Gustavo A. R. Silva [Mon, 29 Jul 2019 22:10:16 +0000 (17:10 -0500)]
net: smc911x: Mark expected switch fall-through

Mark switch cases where we are expecting to fall through.

This patch fixes the following warning (Building: arm):

drivers/net/ethernet/smsc/smc911x.c: In function ‘smc911x_phy_detect’:
drivers/net/ethernet/smsc/smc911x.c:677:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (cfg & HW_CFG_EXT_PHY_DET_) {
       ^
drivers/net/ethernet/smsc/smc911x.c:715:3: note: here
   default:
   ^~~~~~~

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: hamradio: baycom_epp: Mark expected switch fall-through
Gustavo A. R. Silva [Mon, 29 Jul 2019 20:12:31 +0000 (15:12 -0500)]
net: hamradio: baycom_epp: Mark expected switch fall-through

Mark switch cases where we are expecting to fall through.

This patch fixes the following warning (Building: i386):

drivers/net/hamradio/baycom_epp.c: In function ‘transmit’:
drivers/net/hamradio/baycom_epp.c:491:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (i) {
       ^
drivers/net/hamradio/baycom_epp.c:504:3: note: here
   default:  /* fall through */
   ^~~~~~~

Notice that, in this particular case, the code comment is
modified in accordance with what GCC is expecting to find.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: wan: sdla: Mark expected switch fall-through
Gustavo A. R. Silva [Mon, 29 Jul 2019 20:01:39 +0000 (15:01 -0500)]
net: wan: sdla: Mark expected switch fall-through

Mark switch cases where we are expecting to fall through.

This patch fixes the following warning (Building: i386):

drivers/net/wan/sdla.c: In function ‘sdla_errors’:
drivers/net/wan/sdla.c:414:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (cmd == SDLA_INFORMATION_WRITE)
       ^
drivers/net/wan/sdla.c:417:3: note: here
   default:
   ^~~~~~~

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: sctp: drop unneeded likely() call around IS_ERR()
Enrico Weigelt [Mon, 29 Jul 2019 18:55:21 +0000 (20:55 +0200)]
net: sctp: drop unneeded likely() call around IS_ERR()

IS_ERR() already calls unlikely(), so this extra unlikely() call
around IS_ERR() is not needed.

Signed-off-by: Enrico Weigelt <info@metux.net>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agomlxsw: spectrum_ptp: Increase parsing depth when PTP is enabled
Petr Machata [Mon, 29 Jul 2019 18:26:14 +0000 (18:26 +0000)]
mlxsw: spectrum_ptp: Increase parsing depth when PTP is enabled

Spectrum systems have a configurable limit on how far into the packet they
parse. By default, the limit is 96 bytes.

An IPv6 PTP packet is layered as Ethernet/IPv6/UDP (14+40+8 bytes), and
sequence ID of a PTP event is only available 32 bytes into payload, for a
total of 94 bytes. When an additional 802.1q header is present as
well (such as when ptp4l is running on a VLAN port), the parsing limit is
exceeded. Such packets are not recognized as PTP, and are not timestamped.

Therefore generalize the current VXLAN-specific parsing depth setting to
allow reference-counted requests from other modules as well. Keep it in the
VXLAN module, because the MPRS register also configures UDP destination
port number used for VXLAN, and is thus closely tied to the VXLAN code
anyway.

Then invoke the new interfaces from both VXLAN (in obvious places), as well
as from PTP code, when the (global) timestamping configuration changes from
disabled to enabled or vice versa.

Fixes: 8748642751ed ("mlxsw: spectrum: PTP: Support SIOCGHWTSTAMP, SIOCSHWTSTAMP ioctls")
Signed-off-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonetfilter: ipset: Fix rename concurrency with listing
Jozsef Kadlecsik [Tue, 23 Jul 2019 08:25:55 +0000 (10:25 +0200)]
netfilter: ipset: Fix rename concurrency with listing

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>
5 years agonetfilter: ipset: Copy the right MAC address in bitmap:ip,mac and hash:ip,mac sets
Stefano Brivio [Mon, 24 Jun 2019 13:20:12 +0000 (15:20 +0200)]
netfilter: ipset: Copy the right MAC address in bitmap:ip,mac and hash:ip,mac sets

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>
5 years agonetfilter: ipset: Actually allow destination MAC address for hash:ip,mac sets too
Stefano Brivio [Mon, 24 Jun 2019 13:20:11 +0000 (15:20 +0200)]
netfilter: ipset: Actually allow destination MAC address for hash:ip,mac sets too

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>
5 years agonet: spider_net: Mark expected switch fall-through
Gustavo A. R. Silva [Mon, 29 Jul 2019 00:32:51 +0000 (19:32 -0500)]
net: spider_net: Mark expected switch fall-through

Mark switch cases where we are expecting to fall through.

This patch fixes the following warning:

drivers/net/ethernet/toshiba/spider_net.c: In function 'spider_net_release_tx_chain':
drivers/net/ethernet/toshiba/spider_net.c:783:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (!brutal) {
       ^
drivers/net/ethernet/toshiba/spider_net.c:792:3: note: here
   case SPIDER_NET_DESCR_RESPONSE_ERROR:
   ^~~~

Notice that, in this particular case, the code comment is
modified in accordance with what GCC is expecting to find.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: ehea: Mark expected switch fall-through
Gustavo A. R. Silva [Mon, 29 Jul 2019 00:30:09 +0000 (19:30 -0500)]
net: ehea: Mark expected switch fall-through

Mark switch cases where we are expecting to fall through.

This patch fixes the following warning:

drivers/net/ethernet/ibm/ehea/ehea_main.c: In function 'ehea_mem_notifier':
include/linux/printk.h:311:2: warning: this statement may fall through [-Wimplicit-fallthrough=]
  printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/ibm/ehea/ehea_main.c:3253:3: note: in expansion of macro 'pr_info'
   pr_info("memory offlining canceled");
   ^~~~~~~
drivers/net/ethernet/ibm/ehea/ehea_main.c:3256:2: note: here
  case MEM_ONLINE:
  ^~~~

Notice that, in this particular case, the code comment is
modified in accordance with what GCC is expecting to find.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agomvpp2: refactor the HW checksum setup
Matteo Croce [Sun, 28 Jul 2019 17:35:49 +0000 (19:35 +0200)]
mvpp2: refactor the HW checksum setup

The hardware can only offload checksum calculation on first port due to
the Tx FIFO size limitation, and has a maximum L3 offset of 128 bytes.
Document this in a comment and move duplicated code in a function.

Fixes: 576193f2d579 ("net: mvpp2: jumbo frames support")
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: fix ifindex collision during namespace removal
Jiri Pirko [Sun, 28 Jul 2019 12:56:36 +0000 (14:56 +0200)]
net: fix ifindex collision during namespace removal

Commit aca51397d014 ("netns: Fix arbitrary net_device-s corruptions
on net_ns stop.") introduced a possibility to hit a BUG in case device
is returning back to init_net and two following conditions are met:
1) dev->ifindex value is used in a name of another "dev%d"
   device in init_net.
2) dev->name is used by another device in init_net.

Under real life circumstances this is hard to get. Therefore this has
been present happily for over 10 years. To reproduce:

$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether 86:89:3f:86:61:29 brd ff:ff:ff:ff:ff:ff
3: enp0s2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether 52:54:00:12:34:56 brd ff:ff:ff:ff:ff:ff
$ ip netns add ns1
$ ip -n ns1 link add dummy1ns1 type dummy
$ ip -n ns1 link add dummy2ns1 type dummy
$ ip link set enp0s2 netns ns1
$ ip -n ns1 link set enp0s2 name dummy0
[  100.858894] virtio_net virtio0 dummy0: renamed from enp0s2
$ ip link add dev4 type dummy
$ ip -n ns1 a
1: lo: <LOOPBACK> mtu 65536 qdisc noop state DOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: dummy1ns1: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether 16:63:4c:38:3e:ff brd ff:ff:ff:ff:ff:ff
3: dummy2ns1: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether aa:9e:86:dd:6b:5d brd ff:ff:ff:ff:ff:ff
4: dummy0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether 52:54:00:12:34:56 brd ff:ff:ff:ff:ff:ff
$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether 86:89:3f:86:61:29 brd ff:ff:ff:ff:ff:ff
4: dev4: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN group default qlen 1000
    link/ether 5a:e1:4a:b6:ec:f8 brd ff:ff:ff:ff:ff:ff
$ ip netns del ns1
[  158.717795] default_device_exit: failed to move dummy0 to init_net: -17
[  158.719316] ------------[ cut here ]------------
[  158.720591] kernel BUG at net/core/dev.c:9824!
[  158.722260] invalid opcode: 0000 [#1] SMP KASAN PTI
[  158.723728] CPU: 0 PID: 56 Comm: kworker/u2:1 Not tainted 5.3.0-rc1+ #18
[  158.725422] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-2.fc30 04/01/2014
[  158.727508] Workqueue: netns cleanup_net
[  158.728915] RIP: 0010:default_device_exit.cold+0x1d/0x1f
[  158.730683] Code: 84 e8 18 c9 3e fe 0f 0b e9 70 90 ff ff e8 36 e4 52 fe 89 d9 4c 89 e2 48 c7 c6 80 d6 25 84 48 c7 c7 20 c0 25 84 e8 f4 c8 3e
[  158.736854] RSP: 0018:ffff8880347e7b90 EFLAGS: 00010282
[  158.738752] RAX: 000000000000003b RBX: 00000000ffffffef RCX: 0000000000000000
[  158.741369] RDX: 0000000000000000 RSI: ffffffff8128013d RDI: ffffed10068fcf64
[  158.743418] RBP: ffff888033550170 R08: 000000000000003b R09: fffffbfff0b94b9c
[  158.745626] R10: fffffbfff0b94b9b R11: ffffffff85ca5cdf R12: ffff888032f28000
[  158.748405] R13: dffffc0000000000 R14: ffff8880335501b8 R15: 1ffff110068fcf72
[  158.750638] FS:  0000000000000000(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  158.752944] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  158.755245] CR2: 00007fe8b45d21d0 CR3: 00000000340b4005 CR4: 0000000000360ef0
[  158.757654] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  158.760012] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  158.762758] Call Trace:
[  158.763882]  ? dev_change_net_namespace+0xbb0/0xbb0
[  158.766148]  ? devlink_nl_cmd_set_doit+0x520/0x520
[  158.768034]  ? dev_change_net_namespace+0xbb0/0xbb0
[  158.769870]  ops_exit_list.isra.0+0xa8/0x150
[  158.771544]  cleanup_net+0x446/0x8f0
[  158.772945]  ? unregister_pernet_operations+0x4a0/0x4a0
[  158.775294]  process_one_work+0xa1a/0x1740
[  158.776896]  ? pwq_dec_nr_in_flight+0x310/0x310
[  158.779143]  ? do_raw_spin_lock+0x11b/0x280
[  158.780848]  worker_thread+0x9e/0x1060
[  158.782500]  ? process_one_work+0x1740/0x1740
[  158.784454]  kthread+0x31b/0x420
[  158.786082]  ? __kthread_create_on_node+0x3f0/0x3f0
[  158.788286]  ret_from_fork+0x3a/0x50
[  158.789871] ---[ end trace defd6c657c71f936 ]---
[  158.792273] RIP: 0010:default_device_exit.cold+0x1d/0x1f
[  158.795478] Code: 84 e8 18 c9 3e fe 0f 0b e9 70 90 ff ff e8 36 e4 52 fe 89 d9 4c 89 e2 48 c7 c6 80 d6 25 84 48 c7 c7 20 c0 25 84 e8 f4 c8 3e
[  158.804854] RSP: 0018:ffff8880347e7b90 EFLAGS: 00010282
[  158.807865] RAX: 000000000000003b RBX: 00000000ffffffef RCX: 0000000000000000
[  158.811794] RDX: 0000000000000000 RSI: ffffffff8128013d RDI: ffffed10068fcf64
[  158.816652] RBP: ffff888033550170 R08: 000000000000003b R09: fffffbfff0b94b9c
[  158.820930] R10: fffffbfff0b94b9b R11: ffffffff85ca5cdf R12: ffff888032f28000
[  158.825113] R13: dffffc0000000000 R14: ffff8880335501b8 R15: 1ffff110068fcf72
[  158.829899] FS:  0000000000000000(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  158.834923] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  158.838164] CR2: 00007fe8b45d21d0 CR3: 00000000340b4005 CR4: 0000000000360ef0
[  158.841917] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  158.845149] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Fix this by checking if a device with the same name exists in init_net
and fallback to original code - dev%d to allocate name - in case it does.

This was found using syzkaller.

Fixes: aca51397d014 ("netns: Fix arbitrary net_device-s corruptions on net_ns stop.")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agomvpp2: refactor MTU change code
Matteo Croce [Sun, 28 Jul 2019 00:46:45 +0000 (02:46 +0200)]
mvpp2: refactor MTU change code

The MTU change code can call napi_disable() with the device already down,
leading to a deadlock. Also, lot of code is duplicated unnecessarily.

Rework mvpp2_change_mtu() to avoid the deadlock and remove duplicated code.

Fixes: 3f518509dedc ("ethernet: Add new driver for Marvell Armada 375 network unit")
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agorocker: fix memory leaks of fib_work on two error return paths
Colin Ian King [Sat, 27 Jul 2019 23:37:26 +0000 (00:37 +0100)]
rocker: fix memory leaks of fib_work on two error return paths

Currently there are two error return paths that leak memory allocated
to fib_work. Fix this by kfree'ing fib_work before returning.

Addresses-Coverity: ("Resource leak")
Fixes: 19a9d136f198 ("ipv4: Flag fib_info with a fib_nh using IPv6 gateway")
Fixes: dbcc4fa718ee ("rocker: Fail attempts to use routes with nexthop objects")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: stmmac: manage errors returned by of_get_mac_address()
Martin Blumenstingl [Sat, 27 Jul 2019 19:21:37 +0000 (21:21 +0200)]
net: stmmac: manage errors returned by of_get_mac_address()

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>
5 years agonet/af_iucv: mark expected switch fall-throughs
Gustavo A. R. Silva [Mon, 29 Jul 2019 14:59:47 +0000 (09:59 -0500)]
net/af_iucv: mark expected switch fall-throughs

Mark switch cases where we are expecting to fall through.

This patch fixes the following warnings:

net/iucv/af_iucv.c: warning: this statement may fall
through [-Wimplicit-fallthrough=]:  => 537:3, 519:6, 2246:6, 510:6

Notice that, in this particular case, the code comment is
modified in accordance with what GCC is expecting to find.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoarcnet: com20020-isa: Mark expected switch fall-throughs
Gustavo A. R. Silva [Mon, 29 Jul 2019 14:25:03 +0000 (09:25 -0500)]
arcnet: com20020-isa: Mark expected switch fall-throughs

Mark switch cases where we are expecting to fall through.

This patch fixes the following warnings:

drivers/net/arcnet/com20020-isa.c: warning: this statement may fall
through [-Wimplicit-fallthrough=]:  => 205:13, 203:10, 209:7, 201:11,
207:8

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: bridge: delete local fdb on device init failure
Nikolay Aleksandrov [Mon, 29 Jul 2019 09:28:41 +0000 (12:28 +0300)]
net: bridge: delete local fdb on device init failure

On initialization failure we have to delete the local fdb which was
inserted due to the default pvid creation. This problem has been present
since the inception of default_pvid. Note that currently there are 2 cases:
1) in br_dev_init() when br_multicast_init() fails
2) if register_netdevice() fails after calling ndo_init()

This patch takes care of both since br_vlan_flush() is called on both
occasions. Also the new fdb delete would be a no-op on normal bridge
device destruction since the local fdb would've been already flushed by
br_dev_delete(). This is not an issue for ports since nbp_vlan_init() is
called last when adding a port thus nothing can fail after it.

Reported-by: syzbot+88533dc8b582309bf3ee@syzkaller.appspotmail.com
Fixes: 5be5a2df40f0 ("bridge: Add filtering support for default_pvid")
Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: sched: Fix a possible null-pointer dereference in dequeue_func()
Jia-Ju Bai [Mon, 29 Jul 2019 08:24:33 +0000 (16:24 +0800)]
net: sched: Fix a possible null-pointer dereference in dequeue_func()

In dequeue_func(), there is an if statement on line 74 to check whether
skb is NULL:
    if (skb)

When skb is NULL, it is used on line 77:
    prefetch(&skb->end);

Thus, a possible null-pointer dereference may occur.

To fix this bug, skb->end is used when skb is not NULL.

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

Fixes: 76e3cc126bb2 ("codel: Controlled Delay AQM")
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoMAINTAINERS: Remove mailing-list entry for XDP (eXpress Data Path)
Jesper Dangaard Brouer [Mon, 29 Jul 2019 12:16:37 +0000 (14:16 +0200)]
MAINTAINERS: Remove mailing-list entry for XDP (eXpress Data Path)

This removes the mailing list xdp-newbies@vger.kernel.org from the XDP
kernel maintainers entry.

Being in the kernel MAINTAINERS file successfully caused the list to
receive kbuild bot warnings, syzbot reports and sometimes developer
patches. The level of details in these messages, doesn't match the
target audience of the XDP-newbies list. This is based on a survey on
the mailing list, where 73% voted for removal from MAINTAINERS file.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoarcnet: arc-rimi: Mark expected switch fall-throughs
Gustavo A. R. Silva [Mon, 29 Jul 2019 11:15:50 +0000 (06:15 -0500)]
arcnet: arc-rimi: Mark expected switch fall-throughs

Mark switch cases where we are expecting to fall through.

This patch fixes the following warnings (Building: powerpc allyesconfig):

drivers/net/arcnet/arc-rimi.c: In function 'arcrimi_setup':
include/linux/printk.h:304:2: warning: this statement may fall through [-Wimplicit-fallthrough=]
  printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/arcnet/arc-rimi.c:365:3: note: in expansion of macro 'pr_err'
   pr_err("Too many arguments\n");
   ^~~~~~
drivers/net/arcnet/arc-rimi.c:366:2: note: here
  case 3:  /* Node ID */
  ^~~~
drivers/net/arcnet/arc-rimi.c:367:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
   node = ints[3];
   ~~~~~^~~~~~~~~
drivers/net/arcnet/arc-rimi.c:368:2: note: here
  case 2:  /* IRQ */
  ^~~~
drivers/net/arcnet/arc-rimi.c:369:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
   irq = ints[2];
   ~~~~^~~~~~~~~
drivers/net/arcnet/arc-rimi.c:370:2: note: here
  case 1:  /* IO address */
  ^~~~

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoarcnet: com90io: Mark expected switch fall-throughs
Gustavo A. R. Silva [Mon, 29 Jul 2019 11:13:20 +0000 (06:13 -0500)]
arcnet: com90io: Mark expected switch fall-throughs

Mark switch cases where we are expecting to fall through.

This patch fixes the following warnings (Building: powerpc allyesconfig):

drivers/net/arcnet/com90io.c: In function 'com90io_setup':
include/linux/printk.h:304:2: warning: this statement may fall through [-Wimplicit-fallthrough=]
  printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/arcnet/com90io.c:365:3: note: in expansion of macro 'pr_err'
   pr_err("Too many arguments\n");
   ^~~~~~
drivers/net/arcnet/com90io.c:366:2: note: here
  case 2:  /* IRQ */
  ^~~~
drivers/net/arcnet/com90io.c:367:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
   irq = ints[2];
   ~~~~^~~~~~~~~
drivers/net/arcnet/com90io.c:368:2: note: here
  case 1:  /* IO address */
  ^~~~

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoarcnet: com90xx: Mark expected switch fall-throughs
Gustavo A. R. Silva [Mon, 29 Jul 2019 11:09:53 +0000 (06:09 -0500)]
arcnet: com90xx: Mark expected switch fall-throughs

Mark switch cases where we are expecting to fall through.

This patch fixes the following warnings (Building: powerpc allyesconfig):

drivers/net/arcnet/com90xx.c: In function 'com90xx_setup':
include/linux/printk.h:304:2: warning: this statement may fall through [-Wimplicit-fallthrough=]
  printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/arcnet/com90xx.c:695:3: note: in expansion of macro 'pr_err'
   pr_err("Too many arguments\n");
   ^~~~~~
drivers/net/arcnet/com90xx.c:696:2: note: here
  case 3:  /* Mem address */
  ^~~~
drivers/net/arcnet/com90xx.c:697:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
   shmem = ints[3];
   ~~~~~~^~~~~~~~~
drivers/net/arcnet/com90xx.c:698:2: note: here
  case 2:  /* IRQ */
  ^~~~
drivers/net/arcnet/com90xx.c:699:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
   irq = ints[2];
   ~~~~^~~~~~~~~
drivers/net/arcnet/com90xx.c:700:2: note: here
  case 1:  /* IO address */
  ^~~~

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agomac80211_hwsim: Fix possible null-pointer dereferences in hwsim_dump_radio_nl()
Jia-Ju Bai [Mon, 29 Jul 2019 08:23:32 +0000 (16:23 +0800)]
mac80211_hwsim: Fix possible null-pointer dereferences in hwsim_dump_radio_nl()

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>
5 years agomac80211: don't WARN on short WMM parameters from AP
Brian Norris [Fri, 26 Jul 2019 22:47:58 +0000 (15:47 -0700)]
mac80211: don't WARN on short WMM parameters from AP

In a very similar spirit to commit c470bdc1aaf3 ("mac80211: don't WARN
on bad WMM parameters from buggy APs"), an AP may not transmit a
fully-formed WMM IE. For example, it may miss or repeat an Access
Category. The above loop won't catch that and will instead leave one of
the four ACs zeroed out. This triggers the following warning in
drv_conf_tx()

  wlan0: invalid CW_min/CW_max: 0/0

and it may leave one of the hardware queues unconfigured. If we detect
such a case, let's just print a warning and fall back to the defaults.

Tested with a hacked version of hostapd, intentionally corrupting the
IEs in hostapd_eid_wmm().

Cc: stable@vger.kernel.org
Signed-off-by: Brian Norris <briannorris@chromium.org>
Link: https://lore.kernel.org/r/20190726224758.210953-1-briannorris@chromium.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
5 years agonetfilter: add include guard to xt_connlabel.h
Masahiro Yamada [Sun, 28 Jul 2019 15:51:38 +0000 (00:51 +0900)]
netfilter: add include guard to xt_connlabel.h

Add a header include guard just in case.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
5 years agor8169: don't use MSI before RTL8168d
Heiner Kallweit [Sat, 27 Jul 2019 10:43:31 +0000 (12:43 +0200)]
r8169: don't use MSI before RTL8168d

It was reported that after resuming from suspend network fails with
error "do_IRQ: 3.38 No irq handler for vector", see [0]. Enabling WoL
can work around the issue, but the only actual fix is to disable MSI.
So let's mimic the behavior of the vendor driver and disable MSI on
all chip versions before RTL8168d.

[0] https://bugzilla.kernel.org/show_bug.cgi?id=204079

Fixes: 6c6aa15fdea5 ("r8169: improve interrupt handling")
Reported-by: Dušan Dragić <dragic.dusan@gmail.com>
Tested-by: Dušan Dragić <dragic.dusan@gmail.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoRevert ("r8169: remove 1000/Half from supported modes")
Heiner Kallweit [Sat, 27 Jul 2019 10:32:28 +0000 (12:32 +0200)]
Revert ("r8169: remove 1000/Half from supported modes")

This reverts commit a6851c613fd7fccc5d1f28d5d8a0cbe9b0f4e8cc.
It was reported that RTL8111b successfully finishes 1000/Full autoneg
but no data flows. Reverting the original patch fixes the issue.
It seems to be a HW issue with the integrated RTL8211B PHY. This PHY
version used also e.g. on RTL8168d, so better revert the original patch.

Reported-by: Bernhard Held <berny156@gmx.de>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: phylink: Fix flow control for fixed-link
René van Dorst [Sat, 27 Jul 2019 09:40:11 +0000 (11:40 +0200)]
net: phylink: Fix flow control for fixed-link

In phylink_parse_fixedlink() the pl->link_config.advertising bits are AND
with pl->supported, pl->supported is zeroed and only the speed/duplex
modes and MII bits are set.
So pl->link_config.advertising always loses the flow control/pause bits.

By setting Pause and Asym_Pause bits in pl->supported, the flow control
work again when devicetree "pause" is set in fixes-link node and the MAC
advertise that is supports pause.

Results with this patch.

Legend:
- DT = 'Pause' is set in the fixed-link in devicetree.
- validate() = ‘Yes’ means phylink_set(mask, Pause) is set in the
  validate().
- flow = results reported my link is Up line.

+-----+------------+-------+
| DT  | validate() | flow  |
+-----+------------+-------+
| Yes | Yes        | rx/tx |
| No  | Yes        | off   |
| Yes | No         | off   |
+-----+------------+-------+

Fixes: 9525ae83959b ("phylink: add phylink infrastructure")
Signed-off-by: René van Dorst <opensource@vdorst.com>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agogigaset: stop maintaining seperately
Paul Bolle [Fri, 26 Jul 2019 22:05:41 +0000 (00:05 +0200)]
gigaset: stop maintaining seperately

The Dutch consumer grade ISDN network will be shut down on September 1,
2019. This means I'll be converted to some sort of VOIP shortly. At that
point it would be unwise to try to maintain the gigaset driver, even for
odd fixes as I do. So I'll stop maintaining it as a seperate driver and
bump support to CAPI in staging. De facto this means the driver will be
unmaintained, since no-one seems to be working on CAPI.

I've lighty tested the hardware specific modules of this driver (bas-gigaset,
ser-gigaset, and usb-gigaset) for v5.3-rc1. The basic functionality appears to
be working. It's unclear whether anyone still cares. I'm aware of only one
person sort of using the driver a few years ago.

Thanks to Karsten Keil for the ISDN subsystems gigaset was using (I4L and
CAPI). And many thanks to Hansjoerg Lipp and Tilman Schmidt for writing and
upstreaming this driver.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: rds: Fix possible null-pointer dereferences in rds_rdma_cm_event_handler_cmn()
Jia-Ju Bai [Fri, 26 Jul 2019 14:17:05 +0000 (22:17 +0800)]
net: rds: Fix possible null-pointer dereferences in rds_rdma_cm_event_handler_cmn()

In rds_rdma_cm_event_handler_cmn(), there are some if statements to
check whether conn is NULL, such as on lines 65, 96 and 112.
But conn is not checked before being used on line 108:
    trans->cm_connect_complete(conn, event);
and on lines 140-143:
    rdsdebug("DISCONNECT event - dropping connection "
            "%pI6c->%pI6c\n", &conn->c_laddr,
            &conn->c_faddr);
    rds_conn_drop(conn);

Thus, possible null-pointer dereferences may occur.

To fix these bugs, conn is checked before being used.

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

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoisdn: mISDN: hfcsusb: Fix possible null-pointer dereferences in start_isoc_chain()
Jia-Ju Bai [Fri, 26 Jul 2019 08:27:36 +0000 (16:27 +0800)]
isdn: mISDN: hfcsusb: Fix possible null-pointer dereferences in start_isoc_chain()

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>
5 years agoMerge tag 'mlx5-fixes-2019-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git...
David S. Miller [Fri, 26 Jul 2019 21:26:41 +0000 (14:26 -0700)]
Merge tag 'mlx5-fixes-2019-07-25' of git://git./linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
Mellanox, mlx5 fixes 2019-07-25

This series introduces some fixes to mlx5 driver.

1) Ariel is addressing an issue with enacp flow counter race condition
2) Aya fixes ethtool speed handling
3) Edward fixes modify_cq hw bits alignment
4) Maor fixes RDMA_RX capabilities handling
5) Mark reverses unregister devices order to address an issue with LAG
6) From Tariq,
  - wrong max num channels indication regression
  - TLS counters naming and documentation as suggested by Jakub
  - kTLS, Call WARN_ONCE on netdev mismatch

There is one patch in this series that touches nfp driver to align
TLS statistics names with latest documentation, Jakub is CC'ed.

Please pull and let me know if there is any problem.

For -stable v4.9:
  ('net/mlx5: Use reversed order when unregister devices')

For -stable v4.20
  ('net/mlx5e: Prevent encap flow counter update async to user query')
  ('net/mlx5: Fix modify_cq_in alignment')

For -stable v5.1
  ('net/mlx5e: Fix matching of speed to PRM link modes')

For -stable v5.2
  ('net/mlx5: Add missing RDMA_RX capabilities')
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agonet: qualcomm: rmnet: Fix incorrect UL checksum offload logic
Subash Abhinov Kasiviswanathan [Thu, 25 Jul 2019 18:07:12 +0000 (12:07 -0600)]
net: qualcomm: rmnet: Fix incorrect UL checksum offload logic

The udp_ip4_ind bit is set only for IPv4 UDP non-fragmented packets
so that the hardware can flip the checksum to 0xFFFF if the computed
checksum is 0 per RFC768.

However, this bit had to be set for IPv6 UDP non fragmented packets
as well per hardware requirements. Otherwise, IPv6 UDP packets
with computed checksum as 0 were transmitted by hardware and were
dropped in the network.

In addition to setting this bit for IPv6 UDP, the field is also
appropriately renamed to udp_ind as part of this change.

Fixes: 5eb5f8608ef1 ("net: qualcomm: rmnet: Add support for TX checksum offload")
Cc: Sean Tranchetti <stranche@codeaurora.org>
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoip6_tunnel: fix possible use-after-free on xmit
Haishuang Yan [Thu, 25 Jul 2019 16:40:17 +0000 (00:40 +0800)]
ip6_tunnel: fix possible use-after-free on xmit

ip4ip6/ip6ip6 tunnels run iptunnel_handle_offloads on xmit which
can cause a possible use-after-free accessing iph/ipv6h pointer
since the packet will be 'uncloned' running pskb_expand_head if
it is a cloned gso skb.

Fixes: 0e9a709560db ("ip6_tunnel, ip6_gre: fix setting of DSCP on encapsulated packets")
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoocelot: Cancel delayed work before wq destruction
Claudiu Manoil [Thu, 25 Jul 2019 13:33:18 +0000 (16:33 +0300)]
ocelot: Cancel delayed work before wq destruction

Make sure the delayed work for stats update is not pending before
wq destruction.
This fixes the module unload path.
The issue is there since day 1.

Fixes: a556c76adc05 ("net: mscc: Add initial Ocelot switch support")
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
5 years agoqed: RDMA - Fix the hw_ver returned in device attributes
Michal Kalderon [Thu, 25 Jul 2019 10:59:55 +0000 (13:59 +0300)]
qed: RDMA - Fix the hw_ver returned in device attributes

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>
5 years agonet: usb: qmi_wwan: Add the BroadMobi BM818 card
Bob Ham [Wed, 24 Jul 2019 14:52:27 +0000 (07:52 -0700)]
net: usb: qmi_wwan: Add the BroadMobi BM818 card

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>