platform/kernel/linux-rpi.git
4 years agomISDN: make dmril and dmrim static
Jason Yan [Wed, 15 Apr 2020 08:42:26 +0000 (16:42 +0800)]
mISDN: make dmril and dmrim static

Fix the following sparse warning:

drivers/isdn/hardware/mISDN/mISDNisar.c:746:12: warning: symbol 'dmril'
was not declared. Should it be static?
drivers/isdn/hardware/mISDN/mISDNisar.c:749:12: warning: symbol 'dmrim'
was not declared. Should it be static?

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: stmmac: dwmac-sunxi: Provide TX and RX fifo sizes
Florian Fainelli [Tue, 14 Apr 2020 22:39:52 +0000 (15:39 -0700)]
net: stmmac: dwmac-sunxi: Provide TX and RX fifo sizes

After commit bfcb813203e619a8960a819bf533ad2a108d8105 ("net: dsa:
configure the MTU for switch ports") my Lamobo R1 platform which uses
an allwinner,sun7i-a20-gmac compatible Ethernet MAC started to fail
by rejecting a MTU of 1536. The reason for that is that the DMA
capabilities are not readable on this version of the IP, and there
is also no 'tx-fifo-depth' property being provided in Device Tree. The
property is documented as optional, and is not provided.

Chen-Yu indicated that the FIFO sizes are 4KB for TX and 16KB for RX, so
provide these values through platform data as an immediate fix until
various Device Tree sources get updated accordingly.

Fixes: eaf4fac47807 ("net: stmmac: Do not accept invalid MTU values")
Suggested-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: dsa: mt7530: fix tagged frames pass-through in VLAN-unaware mode
DENG Qingfang [Tue, 14 Apr 2020 06:34:08 +0000 (14:34 +0800)]
net: dsa: mt7530: fix tagged frames pass-through in VLAN-unaware mode

In VLAN-unaware mode, the Egress Tag (EG_TAG) field in Port VLAN
Control register must be set to Consistent to let tagged frames pass
through as is, otherwise their tags will be stripped.

Fixes: 83163f7dca56 ("net: dsa: mediatek: add VLAN support for MT7530")
Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: René van Dorst <opensource@vdorst.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agotipc: fix incorrect increasing of link window
Tuong Lien [Wed, 15 Apr 2020 11:34:49 +0000 (18:34 +0700)]
tipc: fix incorrect increasing of link window

In commit 16ad3f4022bb ("tipc: introduce variable window congestion
control"), we allow link window to change with the congestion avoidance
algorithm. However, there is a bug that during the slow-start if packet
retransmission occurs, the link will enter the fast-recovery phase, set
its window to the 'ssthresh' which is never less than 300, so the link
window suddenly increases to that limit instead of decreasing.

Consequently, two issues have been observed:

- For broadcast-link: it can leave a gap between the link queues that a
new packet will be inserted and sent before the previous ones, i.e. not
in-order.

- For unicast: the algorithm does not work as expected, the link window
jumps to the slow-start threshold whereas packet retransmission occurs.

This commit fixes the issues by avoiding such the link window increase,
but still decreasing if the 'ssthresh' is lowered.

Fixes: 16ad3f4022bb ("tipc: introduce variable window congestion control")
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Tuong Lien <tuong.t.lien@dektech.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoDocumentation: Fix tcp_challenge_ack_limit default value
Cambda Zhu [Wed, 15 Apr 2020 09:54:04 +0000 (17:54 +0800)]
Documentation: Fix tcp_challenge_ack_limit default value

The default value of tcp_challenge_ack_limit has been changed from
100 to 1000 and this patch fixes its documentation.

Signed-off-by: Cambda Zhu <cambda@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: tulip: make early_486_chipsets static
Jason Yan [Wed, 15 Apr 2020 08:42:48 +0000 (16:42 +0800)]
net: tulip: make early_486_chipsets static

Fix the following sparse warning:

drivers/net/ethernet/dec/tulip/tulip_core.c:1280:28: warning: symbol
'early_486_chipsets' was not declared. Should it be static?

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodt-bindings: net: ethernet-phy: add desciption for ethernet-phy-id1234.d400
Johan Jonker [Wed, 15 Apr 2020 20:01:49 +0000 (22:01 +0200)]
dt-bindings: net: ethernet-phy: add desciption for ethernet-phy-id1234.d400

The description below is already in use in
'rk3228-evb.dts', 'rk3229-xms6.dts' and 'rk3328.dtsi'
but somehow never added to a document, so add
"ethernet-phy-id1234.d400", "ethernet-phy-ieee802.3-c22"
for ethernet-phy nodes on Rockchip platforms to
'ethernet-phy.yaml'.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoipv6: remove redundant assignment to variable err
Colin Ian King [Wed, 15 Apr 2020 23:16:30 +0000 (00:16 +0100)]
ipv6: remove redundant assignment to variable err

The variable err is being initialized with a value that is never read
and it is being updated later with a new value.  The initialization is
redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet/rds: Use ERR_PTR for rds_message_alloc_sgs()
Jason Gunthorpe [Tue, 14 Apr 2020 23:02:07 +0000 (20:02 -0300)]
net/rds: Use ERR_PTR for rds_message_alloc_sgs()

Returning the error code via a 'int *ret' when the function returns a
pointer is very un-kernely and causes gcc 10's static analysis to choke:

net/rds/message.c: In function ‘rds_message_map_pages’:
net/rds/message.c:358:10: warning: ‘ret’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  358 |   return ERR_PTR(ret);

Use a typical ERR_PTR return instead.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: mscc: ocelot: fix untagged packet drops when enslaving to vlan aware bridge
Vladimir Oltean [Tue, 14 Apr 2020 19:36:15 +0000 (22:36 +0300)]
net: mscc: ocelot: fix untagged packet drops when enslaving to vlan aware bridge

To rehash a previous explanation given in commit 1c44ce560b4d ("net:
mscc: ocelot: fix vlan_filtering when enslaving to bridge before link is
up"), the switch driver operates the in a mode where a single VLAN can
be transmitted as untagged on a particular egress port. That is the
"native VLAN on trunk port" use case.

The configuration for this native VLAN is driven in 2 ways:
 - Set the egress port rewriter to strip the VLAN tag for the native
   VID (as it is egress-untagged, after all).
 - Configure the ingress port to drop untagged and priority-tagged
   traffic, if there is no native VLAN. The intention of this setting is
   that a trunk port with no native VLAN should not accept untagged
   traffic.

Since both of the above configurations for the native VLAN should only
be done if VLAN awareness is requested, they are actually done from the
ocelot_port_vlan_filtering function, after the basic procedure of
toggling the VLAN awareness flag of the port.

But there's a problem with that simplistic approach: we are trying to
juggle with 2 independent variables from a single function:
 - Native VLAN of the port - its value is held in port->vid.
 - VLAN awareness state of the port - currently there are some issues
   here, more on that later*.
The actual problem can be seen when enslaving the switch ports to a VLAN
filtering bridge:
 0. The driver configures a pvid of zero for each port, when in
    standalone mode. While the bridge configures a default_pvid of 1 for
    each port that gets added as a slave to it.
 1. The bridge calls ocelot_port_vlan_filtering with vlan_aware=true.
    The VLAN-filtering-dependent portion of the native VLAN
    configuration is done, considering that the native VLAN is 0.
 2. The bridge calls ocelot_vlan_add with vid=1, pvid=true,
    untagged=true. The native VLAN changes to 1 (change which gets
    propagated to hardware).
 3. ??? - nobody calls ocelot_port_vlan_filtering again, to reapply the
    VLAN-filtering-dependent portion of the native VLAN configuration,
    for the new native VLAN of 1. One can notice that after toggling "ip
    link set dev br0 type bridge vlan_filtering 0 && ip link set dev br0
    type bridge vlan_filtering 1", the new native VLAN finally makes it
    through and untagged traffic finally starts flowing again. But
    obviously that shouldn't be needed.

So it is clear that 2 independent variables need to both re-trigger the
native VLAN configuration. So we introduce the second variable as
ocelot_port->vlan_aware.

*Actually both the DSA Felix driver and the Ocelot driver already had
each its own variable:
 - Ocelot: ocelot_port_private->vlan_aware
 - Felix: dsa_port->vlan_filtering
but the common Ocelot library needs to work with a single, common,
variable, so there is some refactoring done to move the vlan_aware
property from the private structure into the common ocelot_port
structure.

Fixes: 97bb69e1e36e ("net: mscc: ocelot: break apart ocelot_vlan_port_apply")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
David S. Miller [Wed, 15 Apr 2020 18:35:42 +0000 (11:35 -0700)]
Merge git://git./pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2020-04-15

The following pull-request contains BPF updates for your *net* tree.

We've added 10 non-merge commits during the last 3 day(s) which contain
a total of 11 files changed, 238 insertions(+), 95 deletions(-).

The main changes are:

1) Fix offset overflow for BPF_MEM BPF_DW insn mapping on arm32 JIT,
   from Luke Nelson and Xi Wang.

2) Prevent mprotect() to make frozen & mmap()'ed BPF map writeable
   again, from Andrii Nakryiko and Jann Horn.

3) Fix type of old_fd in bpf_xdp_set_link_opts to int in libbpf and add
   selftests, from Toke Høiland-Jørgensen.

4) Fix AF_XDP to check that headroom cannot be larger than the available
   space in the chunk, from Magnus Karlsson.

5) Fix reset of XDP prog when expected_fd is set, from David Ahern.

6) Fix a segfault in bpftool's struct_ops command when BTF is not
   available, from Daniel T. Lee.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge tag 'mac80211-for-net-2020-04-15' of git://git.kernel.org/pub/scm/linux/kernel...
David S. Miller [Wed, 15 Apr 2020 18:27:23 +0000 (11:27 -0700)]
Merge tag 'mac80211-for-net-2020-04-15' of git://git./linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
A couple of fixes:
 * FTM responder policy netlink validation fix
   (but the only user validates again later)
 * kernel-doc fixes
 * a fix for a race in mac80211 radio registration vs. userspace
 * a mesh channel switch fix
 * a fix for a syzbot reported kasprintf() issue
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoselftests/bpf: Check for correct program attach/detach in xdp_attach test
Toke Høiland-Jørgensen [Tue, 14 Apr 2020 14:50:25 +0000 (16:50 +0200)]
selftests/bpf: Check for correct program attach/detach in xdp_attach test

David Ahern noticed that there was a bug in the EXPECTED_FD code so
programs did not get detached properly when that parameter was supplied.
This case was not included in the xdp_attach tests; so let's add it to be
sure that such a bug does not sneak back in down.

Fixes: 87854a0b57b3 ("selftests/bpf: Add tests for attaching XDP programs")
Reported-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200414145025.182163-2-toke@redhat.com
4 years agolibbpf: Fix type of old_fd in bpf_xdp_set_link_opts
Toke Høiland-Jørgensen [Tue, 14 Apr 2020 14:50:24 +0000 (16:50 +0200)]
libbpf: Fix type of old_fd in bpf_xdp_set_link_opts

The 'old_fd' parameter used for atomic replacement of XDP programs is
supposed to be an FD, but was left as a u32 from an earlier iteration of
the patch that added it. It was converted to an int when read, so things
worked correctly even with negative values, but better change the
definition to correctly reflect the intention.

Fixes: bd5ca3ef93cd ("libbpf: Add function to set link XDP fd while specifying old program")
Reported-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: David Ahern <dsahern@gmail.com>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200414145025.182163-1-toke@redhat.com
4 years agolibbpf: Always specify expected_attach_type on program load if supported
Andrii Nakryiko [Tue, 14 Apr 2020 18:26:45 +0000 (11:26 -0700)]
libbpf: Always specify expected_attach_type on program load if supported

For some types of BPF programs that utilize expected_attach_type, libbpf won't
set load_attr.expected_attach_type, even if expected_attach_type is known from
section definition. This was done to preserve backwards compatibility with old
kernels that didn't recognize expected_attach_type attribute yet (which was
added in 5e43f899b03a ("bpf: Check attach type at prog load time"). But this
is problematic for some BPF programs that utilize newer features that require
kernel to know specific expected_attach_type (e.g., extended set of return
codes for cgroup_skb/egress programs).

This patch makes libbpf specify expected_attach_type by default, but also
detect support for this field in kernel and not set it during program load.
This allows to have a good metadata for bpf_program
(e.g., bpf_program__get_extected_attach_type()), but still work with old
kernels (for cases where it can work at all).

Additionally, due to expected_attach_type being always set for recognized
program types, bpf_program__attach_cgroup doesn't have to do extra checks to
determine correct attach type, so remove that additional logic.

Also adjust section_names selftest to account for this change.

More detailed discussion can be found in [0].

  [0] https://lore.kernel.org/bpf/20200412003604.GA15986@rdna-mbp.dhcp.thefacebook.com/

Fixes: 5cf1e9145630 ("bpf: cgroup inet skb programs can return 0 to 3")
Fixes: 5e43f899b03a ("bpf: Check attach type at prog load time")
Reported-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: Andrey Ignatov <rdna@fb.com>
Link: https://lore.kernel.org/bpf/20200414182645.1368174-1-andriin@fb.com
4 years agoxsk: Add missing check on user supplied headroom size
Magnus Karlsson [Tue, 14 Apr 2020 07:35:15 +0000 (09:35 +0200)]
xsk: Add missing check on user supplied headroom size

Add a check that the headroom cannot be larger than the available
space in the chunk. In the current code, a malicious user can set the
headroom to a value larger than the chunk size minus the fixed XDP
headroom. That way packets with a length larger than the supported
size in the umem could get accepted and result in an out-of-bounds
write.

Fixes: c0c77d8fb787 ("xsk: add user memory registration support sockopt")
Reported-by: Bui Quang Minh <minhquangbui99@gmail.com>
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=207225
Link: https://lore.kernel.org/bpf/1586849715-23490-1-git-send-email-magnus.karlsson@intel.com
4 years agomac80211: fix channel switch trigger from unknown mesh peer
Tamizh chelvam [Sat, 28 Mar 2020 13:53:24 +0000 (19:23 +0530)]
mac80211: fix channel switch trigger from unknown mesh peer

Previously mesh channel switch happens if beacon contains
CSA IE without checking the mesh peer info. Due to that
channel switch happens even if the beacon is not from
its own mesh peer. Fixing that by checking if the CSA
originated from the same mesh network before proceeding
for channel switch.

Signed-off-by: Tamizh chelvam <tamizhr@codeaurora.org>
Link: https://lore.kernel.org/r/1585403604-29274-1-git-send-email-tamizhr@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
4 years agomac80211: fix race in ieee80211_register_hw()
Sumit Garg [Tue, 7 Apr 2020 10:10:55 +0000 (15:40 +0530)]
mac80211: fix race in ieee80211_register_hw()

A race condition leading to a kernel crash is observed during invocation
of ieee80211_register_hw() on a dragonboard410c device having wcn36xx
driver built as a loadable module along with a wifi manager in user-space
waiting for a wifi device (wlanX) to be active.

Sequence diagram for a particular kernel crash scenario:

    user-space  ieee80211_register_hw()  ieee80211_tasklet_handler()
    ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
       |                    |                 |
       |<---phy0----wiphy_register()          |
       |-----iwd if_add---->|                 |
       |                    |<---IRQ----(RX packet)
       |              Kernel crash            |
       |              due to unallocated      |
       |              workqueue.              |
       |                    |                 |
       |       alloc_ordered_workqueue()      |
       |                    |                 |
       |              Misc wiphy init.        |
       |                    |                 |
       |            ieee80211_if_add()        |
       |                    |                 |

As evident from above sequence diagram, this race condition isn't specific
to a particular wifi driver but rather the initialization sequence in
ieee80211_register_hw() needs to be fixed. So re-order the initialization
sequence and the updated sequence diagram would look like:

    user-space  ieee80211_register_hw()  ieee80211_tasklet_handler()
    ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
       |                    |                 |
       |       alloc_ordered_workqueue()      |
       |                    |                 |
       |              Misc wiphy init.        |
       |                    |                 |
       |<---phy0----wiphy_register()          |
       |-----iwd if_add---->|                 |
       |                    |<---IRQ----(RX packet)
       |                    |                 |
       |            ieee80211_if_add()        |
       |                    |                 |

Cc: stable@vger.kernel.org
Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
Link: https://lore.kernel.org/r/1586254255-28713-1-git-send-email-sumit.garg@linaro.org
[Johannes: fix rtnl imbalances]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
4 years agoMerge branch 'Fix-88x3310-leaving-power-save-mode'
David S. Miller [Tue, 14 Apr 2020 23:48:09 +0000 (16:48 -0700)]
Merge branch 'Fix-88x3310-leaving-power-save-mode'

Russell King says:

====================
Fix 88x3310 leaving power save mode

This series fixes a problem with the 88x3310 PHY on Macchiatobin
coming out of powersave mode noticed by Matteo Croce.  It seems
that certain PHY firmwares do not properly exit powersave mode,
resulting in a fibre link not coming up.

The solution appears to be to soft-reset the PHY after clearing
the powersave bit.

We add support for reporting the PHY firmware version to the kernel
log, and use it to trigger this new behaviour if we have v0.3.x.x
or more recent firmware on the PHY.  This, however, is a guess as
the firmware revision documentation does not mention this issue,
and we know that v0.2.1.0 works without this fix but v0.3.3.0 and
later does not.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: marvell10g: soft-reset the PHY when coming out of low power
Russell King [Tue, 14 Apr 2020 19:49:08 +0000 (20:49 +0100)]
net: marvell10g: soft-reset the PHY when coming out of low power

Soft-reset the PHY when coming out of low power mode, which seems to
be necessary with firmware versions 0.3.3.0 and 0.3.10.0.

This depends on ("net: marvell10g: report firmware version")

Fixes: c9cc1c815d36 ("net: phy: marvell10g: place in powersave mode at probe")
Reported-by: Matteo Croce <mcroce@redhat.com>
Tested-by: Matteo Croce <mcroce@redhat.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: marvell10g: report firmware version
Russell King [Tue, 14 Apr 2020 19:49:03 +0000 (20:49 +0100)]
net: marvell10g: report firmware version

Report the firmware version when probing the PHY to allow issues
attributable to firmware to be diagnosed.

Tested-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet/cxgb4: Check the return from t4_query_params properly
Jason Gunthorpe [Tue, 14 Apr 2020 15:27:08 +0000 (12:27 -0300)]
net/cxgb4: Check the return from t4_query_params properly

Positive return values are also failures that don't set val,
although this probably can't happen. Fixes gcc 10 warning:

drivers/net/ethernet/chelsio/cxgb4/t4_hw.c: In function ‘t4_phy_fw_ver’:
drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3747:14: warning: ‘val’ may be used uninitialized in this function [-Wmaybe-uninitialized]
 3747 |  *phy_fw_ver = val;

Fixes: 01b6961410b7 ("cxgb4: Add PHY firmware support for T420-BT cards")
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: stmmac: socfpga: Allow all RGMII modes
Atsushi Nemoto [Tue, 14 Apr 2020 01:12:34 +0000 (10:12 +0900)]
net: stmmac: socfpga: Allow all RGMII modes

Allow all the RGMII modes to be used.  (Not only "rgmii", "rgmii-id"
but "rgmii-txid", "rgmii-rxid")

Signed-off-by: Atsushi Nemoto <atsushi.nemoto@sord.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'mv88e6xxx-fixed-link-fixes'
David S. Miller [Tue, 14 Apr 2020 23:33:26 +0000 (16:33 -0700)]
Merge branch 'mv88e6xxx-fixed-link-fixes'

Andrew Lunn says:

====================
mv88e6xxx fixed link fixes

Recent changes for how the MAC is configured broke fixed links, as
used by CPU/DSA ports, and for SFPs when phylink cannot be used. The
first fix is unchanged from v1. The second fix takes a different
solution than v1. If a CPU or DSA port is known to have a PHYLINK
instance, configure the port down before instantiating the PHYLINK, so
it is in the down state as expected by PHYLINK.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: dsa: Down cpu/dsa ports phylink will control
Andrew Lunn [Tue, 14 Apr 2020 00:34:39 +0000 (02:34 +0200)]
net: dsa: Down cpu/dsa ports phylink will control

DSA and CPU ports can be configured in two ways. By default, the
driver should configure such ports to there maximum bandwidth. For
most use cases, this is sufficient. When this default is insufficient,
a phylink instance can be bound to such ports, and phylink will
configure the port, e.g. based on fixed-link properties. phylink
assumes the port is initially down. Given that the driver should have
already configured it to its maximum speed, ask the driver to down
the port before instantiating the phylink instance.

Fixes: 30c4a5b0aad8 ("net: mv88e6xxx: use resolved link config in mac_link_up()")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: dsa: mv88e6xxx: Configure MAC when using fixed link
Andrew Lunn [Tue, 14 Apr 2020 00:34:38 +0000 (02:34 +0200)]
net: dsa: mv88e6xxx: Configure MAC when using fixed link

The 88e6185 is reporting it has detected a PHY, when a port is
connected to an SFP. As a result, the fixed-phy configuration is not
being applied. That then breaks packet transfer, since the port is
reported as being down.

Add additional conditions to check the interface mode, and if it is
fixed always configure the port on link up/down, independent of the
PPU status.

Fixes: 30c4a5b0aad8 ("net: mv88e6xxx: use resolved link config in mac_link_up()")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'ionic-address-automated-build-complaints'
David S. Miller [Tue, 14 Apr 2020 23:30:14 +0000 (16:30 -0700)]
Merge branch 'ionic-address-automated-build-complaints'

Shannon Nelson says:

====================
ionic: address automated build complaints

Kernel build checks found a couple of things to improve.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: fix unused assignment
Shannon Nelson [Mon, 13 Apr 2020 17:33:11 +0000 (10:33 -0700)]
ionic: fix unused assignment

Remove an unused initialized value.

Fixes: 7e4d47596b68 ("ionic: replay filters after fw upgrade")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: add dynamic_debug header
Shannon Nelson [Mon, 13 Apr 2020 17:33:10 +0000 (10:33 -0700)]
ionic: add dynamic_debug header

Add the appropriate header for using dynamic_hex_dump(), which
seems to be incidentally included in some configurations but
not all.

Fixes: 7e4d47596b68 ("ionic: replay filters after fw upgrade")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agorxrpc: Fix DATA Tx to disable nofrag for UDP on AF_INET6 socket
David Howells [Mon, 13 Apr 2020 12:57:14 +0000 (13:57 +0100)]
rxrpc: Fix DATA Tx to disable nofrag for UDP on AF_INET6 socket

Fix the DATA packet transmission to disable nofrag for UDPv4 on an AF_INET6
socket as well as UDPv6 when trying to transmit fragmentably.

Without this, packets filled to the normal size used by the kernel AFS
client of 1412 bytes be rejected by udp_sendmsg() with EMSGSIZE
immediately.  The ->sk_error_report() notification hook is called, but
rxrpc doesn't generate a trace for it.

This is a temporary fix; a more permanent solution needs to involve
changing the size of the packets being filled in accordance with the MTU,
which isn't currently done in AF_RXRPC.  The reason for not doing so was
that, barring the last packet in an rx jumbo packet, jumbos can only be
assembled out of 1412-byte packets - and the plan was to construct jumbos
on the fly at transmission time.

Also, there's no point turning on IPV6_MTU_DISCOVER, since IPv6 has to
engage in this anyway since fragmentation is only done by the sender.  We
can then condense the switch-statement in rxrpc_send_data_packet().

Fixes: 75b54cb57ca3 ("rxrpc: Add IPv6 support")
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: phy: micrel: use genphy_read_status for KSZ9131
Atsushi Nemoto [Fri, 10 Apr 2020 03:16:16 +0000 (12:16 +0900)]
net: phy: micrel: use genphy_read_status for KSZ9131

KSZ9131 will not work with some switches due to workaround for KSZ9031
introduced in commit d2fd719bcb0e83cb39cfee22ee800f98a56eceb3
("net/phy: micrel: Add workaround for bad autoneg").
Use genphy_read_status instead of dedicated ksz9031_read_status.

Fixes: bff5b4b37372 ("net: phy: micrel: add Microchip KSZ9131 initial driver")
Signed-off-by: Atsushi Nemoto <atsushi.nemoto@sord.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge tag 'wireless-drivers-2020-04-14' of git://git.kernel.org/pub/scm/linux/kernel...
David S. Miller [Tue, 14 Apr 2020 20:07:19 +0000 (13:07 -0700)]
Merge tag 'wireless-drivers-2020-04-14' of git://git./linux/kernel/git/kvalo/wireless-drivers

Kalle Valo says:

====================
wireless-drivers fixes for v5.7

First set of fixes for v5.6. Fixes for a crash and for two compiler
warnings.

brcmfmac

* fix a crash related to monitor interface

ath11k

* fix compiler warnings without CONFIG_THERMAL

rtw88

* fix compiler warnings related to suspend and resume functions
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agobpf: remove unneeded conversion to bool in __mark_reg_unknown
Zou Wei [Mon, 13 Apr 2020 11:57:56 +0000 (19:57 +0800)]
bpf: remove unneeded conversion to bool in __mark_reg_unknown

This issue was detected by using the Coccinelle software:

  kernel/bpf/verifier.c:1259:16-21: WARNING: conversion to bool not needed here

The conversion to bool is unneeded, remove it.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/1586779076-101346-1-git-send-email-zou_wei@huawei.com
4 years agoxdp: Reset prog in dev_change_xdp_fd when fd is negative
David Ahern [Sun, 12 Apr 2020 13:32:04 +0000 (07:32 -0600)]
xdp: Reset prog in dev_change_xdp_fd when fd is negative

The commit mentioned in the Fixes tag reuses the local prog variable
when looking up an expected_fd. The variable is not reset when fd < 0
causing a detach with the expected_fd set to actually call
dev_xdp_install for the existing program. The end result is that the
detach does not happen.

Fixes: 92234c8f15c8 ("xdp: Support specifying expected existing program when attaching XDP")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/bpf/20200412133204.43847-1-dsahern@kernel.org
4 years agotools, bpftool: Fix struct_ops command invalid pointer free
Daniel T. Lee [Fri, 10 Apr 2020 02:06:12 +0000 (11:06 +0900)]
tools, bpftool: Fix struct_ops command invalid pointer free

In commit 65c93628599d ("bpftool: Add struct_ops support") a new
type of command named struct_ops has been added. This command requires
a kernel with CONFIG_DEBUG_INFO_BTF=y set and for retrieving BTF info
in bpftool, the helper get_btf_vmlinux() is used.

When running this command on kernel without BTF debug info, this will
lead to 'btf_vmlinux' variable being an invalid(error) pointer. And by
this, btf_free() causes a segfault when executing 'bpftool struct_ops'.

This commit adds pointer validation with IS_ERR not to free invalid
pointer, and this will fix the segfault issue.

Fixes: 65c93628599d ("bpftool: Add struct_ops support")
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20200410020612.2930667-1-danieltimlee@gmail.com
4 years agoselftests/bpf: Validate frozen map contents stays frozen
Andrii Nakryiko [Fri, 10 Apr 2020 20:26:13 +0000 (13:26 -0700)]
selftests/bpf: Validate frozen map contents stays frozen

Test that frozen and mmap()'ed BPF map can't be mprotect()'ed as writable or
executable memory. Also validate that "downgrading" from writable to read-only
doesn't screw up internal writable count accounting for the purposes of map
freezing.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200410202613.3679837-2-andriin@fb.com
4 years agobpf: Prevent re-mmap()'ing BPF map as writable for initially r/o mapping
Andrii Nakryiko [Fri, 10 Apr 2020 20:26:12 +0000 (13:26 -0700)]
bpf: Prevent re-mmap()'ing BPF map as writable for initially r/o mapping

VM_MAYWRITE flag during initial memory mapping determines if already mmap()'ed
pages can be later remapped as writable ones through mprotect() call. To
prevent user application to rewrite contents of memory-mapped as read-only and
subsequently frozen BPF map, remove VM_MAYWRITE flag completely on initially
read-only mapping.

Alternatively, we could treat any memory-mapping on unfrozen map as writable
and bump writecnt instead. But there is little legitimate reason to map
BPF map as read-only and then re-mmap() it as writable through mprotect(),
instead of just mmap()'ing it as read/write from the very beginning.

Also, at the suggestion of Jann Horn, drop unnecessary refcounting in mmap
operations. We can just rely on VMA holding reference to BPF map's file
properly.

Fixes: fc9702273e2e ("bpf: Add mmap() support for BPF_MAP_TYPE_ARRAY")
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jann Horn <jannh@google.com>
Link: https://lore.kernel.org/bpf/20200410202613.3679837-1-andriin@fb.com
4 years agoarm, bpf: Fix offset overflow for BPF_MEM BPF_DW
Luke Nelson [Thu, 9 Apr 2020 22:17:52 +0000 (15:17 -0700)]
arm, bpf: Fix offset overflow for BPF_MEM BPF_DW

This patch fixes an incorrect check in how immediate memory offsets are
computed for BPF_DW on arm.

For BPF_LDX/ST/STX + BPF_DW, the 32-bit arm JIT breaks down an 8-byte
access into two separate 4-byte accesses using off+0 and off+4. If off
fits in imm12, the JIT emits a ldr/str instruction with the immediate
and avoids the use of a temporary register. While the current check off
<= 0xfff ensures that the first immediate off+0 doesn't overflow imm12,
it's not sufficient for the second immediate off+4, which may cause the
second access of BPF_DW to read/write the wrong address.

This patch fixes the problem by changing the check to
off <= 0xfff - 4 for BPF_DW, ensuring off+4 will never overflow.

A side effect of simplifying the check is that it now allows using
negative immediate offsets in ldr/str. This means that small negative
offsets can also avoid the use of a temporary register.

This patch introduces no new failures in test_verifier or test_bpf.c.

Fixes: c5eae692571d6 ("ARM: net: bpf: improve 64-bit store implementation")
Fixes: ec19e02b343db ("ARM: net: bpf: fix LDX instructions")
Co-developed-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Luke Nelson <luke.r.nels@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200409221752.28448-1-luke.r.nels@gmail.com
4 years agortw88: avoid unused function warnings
Arnd Bergmann [Wed, 8 Apr 2020 18:53:51 +0000 (20:53 +0200)]
rtw88: avoid unused function warnings

The rtw88 driver defines emtpy functions with multiple indirections
but gets one of these wrong:

drivers/net/wireless/realtek/rtw88/pci.c:1347:12: error: 'rtw_pci_resume' defined but not used [-Werror=unused-function]
 1347 | static int rtw_pci_resume(struct device *dev)
      |            ^~~~~~~~~~~~~~
drivers/net/wireless/realtek/rtw88/pci.c:1342:12: error: 'rtw_pci_suspend' defined but not used [-Werror=unused-function]
 1342 | static int rtw_pci_suspend(struct device *dev)

Better simplify it to rely on the conditional reference in
SIMPLE_DEV_PM_OPS(), and mark the functions as __maybe_unused to avoid
warning about it.

I'm not sure if these are needed at all given that the functions
don't do anything, but they were only recently added.

Fixes: 44bc17f7f5b3 ("rtw88: support wowlan feature for 8822c")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200408185413.218643-1-arnd@arndb.de
4 years agocfg80211: fix kernel-doc notation
Lothar Rubusch [Wed, 8 Apr 2020 23:10:13 +0000 (23:10 +0000)]
cfg80211: fix kernel-doc notation

Update missing kernel-doc annotations and fix of related warnings
at 'make htmldocs'.

Signed-off-by: Lothar Rubusch <l.rubusch@gmail.com>
Link: https://lore.kernel.org/r/20200408231013.28370-1-l.rubusch@gmail.com
[fix indentation, attribute references]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
4 years agomac80211_hwsim: Use kstrndup() in place of kasprintf()
Tuomas Tynkkynen [Fri, 10 Apr 2020 12:32:57 +0000 (15:32 +0300)]
mac80211_hwsim: Use kstrndup() in place of kasprintf()

syzbot reports a warning:

precision 33020 too large
WARNING: CPU: 0 PID: 9618 at lib/vsprintf.c:2471 set_precision+0x150/0x180 lib/vsprintf.c:2471
 vsnprintf+0xa7b/0x19a0 lib/vsprintf.c:2547
 kvasprintf+0xb2/0x170 lib/kasprintf.c:22
 kasprintf+0xbb/0xf0 lib/kasprintf.c:59
 hwsim_del_radio_nl+0x63a/0x7e0 drivers/net/wireless/mac80211_hwsim.c:3625
 genl_family_rcv_msg_doit net/netlink/genetlink.c:672 [inline]
 ...
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Thus it seems that kasprintf() with "%.*s" format can not be used for
duplicating a string with arbitrary length. Replace it with kstrndup().

Note that later this string is limited to NL80211_WIPHY_NAME_MAXLEN == 64,
but the code is simpler this way.

Reported-by: syzbot+6693adf1698864d21734@syzkaller.appspotmail.com
Reported-by: syzbot+a4aee3f42d7584d76761@syzkaller.appspotmail.com
Cc: stable@kernel.org
Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Link: https://lore.kernel.org/r/20200410123257.14559-1-tuomas.tynkkynen@iki.fi
[johannes: add note about length limit]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
4 years agonl80211: fix NL80211_ATTR_FTM_RESPONDER policy
Johannes Berg [Sat, 11 Apr 2020 22:40:30 +0000 (00:40 +0200)]
nl80211: fix NL80211_ATTR_FTM_RESPONDER policy

The nested policy here should be established using the
NLA_POLICY_NESTED() macro so the length is properly
filled in.

Cc: stable@vger.kernel.org
Fixes: 81e54d08d9d8 ("cfg80211: support FTM responder configuration/statistics")
Link: https://lore.kernel.org/r/20200412004029.9d0722bb56c8.Ie690bfcc4a1a61ff8d8ca7e475d59fcaa52fb2da@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
4 years agonet: mvneta: Fix a typo
Christophe JAILLET [Sun, 12 Apr 2020 21:20:34 +0000 (23:20 +0200)]
net: mvneta: Fix a typo

s/mvmeta/mvneta/

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agomptcp: fix double-unlock in mptcp_poll
Florian Westphal [Sat, 11 Apr 2020 19:05:01 +0000 (21:05 +0200)]
mptcp: fix double-unlock in mptcp_poll

mptcp_connect/28740 is trying to release lock (sk_lock-AF_INET) at:
[<ffffffff82c15869>] mptcp_poll+0xb9/0x550
but there are no more locks to release!
Call Trace:
 lock_release+0x50f/0x750
 release_sock+0x171/0x1b0
 mptcp_poll+0xb9/0x550
 sock_poll+0x157/0x470
 ? get_net_ns+0xb0/0xb0
 do_sys_poll+0x63c/0xdd0

Problem is that __mptcp_tcp_fallback() releases the mptcp socket lock,
but after recent change it doesn't do this in all of its return paths.

To fix this, remove the unlock from __mptcp_tcp_fallback() and
always do the unlock in the caller.

Also add a small comment as to why we have this
__mptcp_needs_tcp_fallback().

Fixes: 0b4f33def7bbde ("mptcp: fix tcp fallback crash")
Reported-by: syzbot+e56606435b7bfeea8cf5@syzkaller.appspotmail.com
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: tun: record RX queue in skb before do_xdp_generic()
Gilberto Bertin [Fri, 10 Apr 2020 16:20:59 +0000 (18:20 +0200)]
net: tun: record RX queue in skb before do_xdp_generic()

This allows netif_receive_generic_xdp() to correctly determine the RX
queue from which the skb is coming, so that the context passed to the
XDP program will contain the correct RX queue index.

Signed-off-by: Gilberto Bertin <me@jibi.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: ethernet: ti: Add missing '\n' in log messages
Christophe JAILLET [Sat, 11 Apr 2020 07:52:11 +0000 (09:52 +0200)]
net: ethernet: ti: Add missing '\n' in log messages

Message logged by 'dev_xxx()' or 'pr_xxx()' should end with a '\n'.

Fixes: 93a76530316a ("net: ethernet: ti: introduce am65x/j721e gigabit eth subsystem driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agosoc: qcom: ipa: Add a missing '\n' in a log message
Christophe JAILLET [Sat, 11 Apr 2020 07:30:04 +0000 (09:30 +0200)]
soc: qcom: ipa: Add a missing '\n' in a log message

Message logged by 'dev_xxx()' or 'pr_xxx()' should end with a '\n'.

Fixes: a646d6ec9098 ("soc: qcom: ipa: modem and microcontroller")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agonet: neterion: remove redundant assignment to variable tmp64
Colin Ian King [Fri, 10 Apr 2020 19:11:50 +0000 (20:11 +0100)]
net: neterion: remove redundant assignment to variable tmp64

The variable tmp64 is being initialized with a value that is never read
and it is being updated later with a new value.  The initialization is
redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agonet: phy: marvell: Fix pause frame negotiation
Clemens Gruber [Sat, 11 Apr 2020 16:51:25 +0000 (18:51 +0200)]
net: phy: marvell: Fix pause frame negotiation

The negotiation of flow control / pause frame modes was broken since
commit fcf1f59afc67 ("net: phy: marvell: rearrange to use
genphy_read_lpa()") moved the setting of phydev->duplex below the
phy_resolve_aneg_pause call. Due to a check of DUPLEX_FULL in that
function, phydev->pause was no longer set.

Fix it by moving the parsing of the status variable before the blocks
dealing with the pause frames.

As the Marvell 88E1510 datasheet does not specify the timing between the
link status and the "Speed and Duplex Resolved" bit, we have to force
the link down as long as the resolved bit is not set, to avoid reporting
link up before we even have valid Speed/Duplex.

Tested with a Marvell 88E1510 (RGMII to Copper/1000Base-T)

Fixes: fcf1f59afc67 ("net: phy: marvell: rearrange to use genphy_read_lpa()")
Signed-off-by: Clemens Gruber <clemens.gruber@pqgruber.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agodocs: networking: add full DIM API
Randy Dunlap [Thu, 9 Apr 2020 21:21:59 +0000 (14:21 -0700)]
docs: networking: add full DIM API

Add the full net DIM API to the net_dim.rst file.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agodocs: networking: convert DIM to RST
Jakub Kicinski [Thu, 9 Apr 2020 21:21:58 +0000 (14:21 -0700)]
docs: networking: convert DIM to RST

Convert the Dynamic Interrupt Moderation doc to RST and
use the RST features like syntax highlight, function and
structure documentation, enumerations, table of contents.

Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
David S. Miller [Fri, 10 Apr 2020 00:39:22 +0000 (17:39 -0700)]
Merge git://git./pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2020-04-10

The following pull-request contains BPF updates for your *net* tree.

We've added 13 non-merge commits during the last 7 day(s) which contain
a total of 13 files changed, 137 insertions(+), 43 deletions(-).

The main changes are:

1) JIT code emission fixes for riscv and arm32, from Luke Nelson and Xi Wang.

2) Disable vmlinux BTF info if GCC_PLUGIN_RANDSTRUCT is used, from Slava Bacherikov.

3) Fix oob write in AF_XDP when meta data is used, from Li RongQing.

4) Fix bpf_get_link_xdp_id() handling on single prog when flags are specified,
   from Andrey Ignatov.

5) Fix sk_assign() BPF helper for request sockets that can have sk_reuseport
   field uninitialized, from Joe Stringer.

6) Fix mprotect() test case for the BPF LSM, from KP Singh.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: ipv4: devinet: Fix crash when add/del multicast IP with autojoin
Taras Chornyi [Thu, 9 Apr 2020 17:25:24 +0000 (20:25 +0300)]
net: ipv4: devinet: Fix crash when add/del multicast IP with autojoin

When CONFIG_IP_MULTICAST is not set and multicast ip is added to the device
with autojoin flag or when multicast ip is deleted kernel will crash.

steps to reproduce:

ip addr add 224.0.0.0/32 dev eth0
ip addr del 224.0.0.0/32 dev eth0

or

ip addr add 224.0.0.0/32 dev eth0 autojoin

Unable to handle kernel NULL pointer dereference at virtual address 0000000000000088
 pc : _raw_write_lock_irqsave+0x1e0/0x2ac
 lr : lock_sock_nested+0x1c/0x60
 Call trace:
  _raw_write_lock_irqsave+0x1e0/0x2ac
  lock_sock_nested+0x1c/0x60
  ip_mc_config.isra.28+0x50/0xe0
  inet_rtm_deladdr+0x1a8/0x1f0
  rtnetlink_rcv_msg+0x120/0x350
  netlink_rcv_skb+0x58/0x120
  rtnetlink_rcv+0x14/0x20
  netlink_unicast+0x1b8/0x270
  netlink_sendmsg+0x1a0/0x3b0
  ____sys_sendmsg+0x248/0x290
  ___sys_sendmsg+0x80/0xc0
  __sys_sendmsg+0x68/0xc0
  __arm64_sys_sendmsg+0x20/0x30
  el0_svc_common.constprop.2+0x88/0x150
  do_el0_svc+0x20/0x80
 el0_sync_handler+0x118/0x190
  el0_sync+0x140/0x180

Fixes: 93a714d6b53d ("multicast: Extend ip address command to enable multicast group join/leave on")
Signed-off-by: Taras Chornyi <taras.chornyi@plvision.eu>
Signed-off-by: Vadym Kochan <vadym.kochan@plvision.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet/rds: Fix MR reference counting problem
Ka-Cheong Poon [Wed, 8 Apr 2020 10:21:02 +0000 (03:21 -0700)]
net/rds: Fix MR reference counting problem

In rds_free_mr(), it calls rds_destroy_mr(mr) directly.  But this
defeats the purpose of reference counting and makes MR free handling
impossible.  It means that holding a reference does not guarantee that
it is safe to access some fields.  For example, In
rds_cmsg_rdma_dest(), it increases the ref count, unlocks and then
calls mr->r_trans->sync_mr().  But if rds_free_mr() (and
rds_destroy_mr()) is called in between (there is no lock preventing
this to happen), r_trans_private is set to NULL, causing a panic.
Similar issue is in rds_rdma_unuse().

Reported-by: zerons <sironhide0null@gmail.com>
Signed-off-by: Ka-Cheong Poon <ka-cheong.poon@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet/rds: Replace struct rds_mr's r_refcount with struct kref
Ka-Cheong Poon [Wed, 8 Apr 2020 10:21:01 +0000 (03:21 -0700)]
net/rds: Replace struct rds_mr's r_refcount with struct kref

And removed rds_mr_put().

Signed-off-by: Ka-Cheong Poon <ka-cheong.poon@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: macsec: fix using wrong structure in macsec_changelink()
Taehee Yoo [Thu, 9 Apr 2020 14:08:08 +0000 (14:08 +0000)]
net: macsec: fix using wrong structure in macsec_changelink()

In the macsec_changelink(), "struct macsec_tx_sa tx_sc" is used to
store "macsec_secy.tx_sc".
But, the struct type of tx_sc is macsec_tx_sc, not macsec_tx_sa.
So, the macsec_tx_sc should be used instead.

Test commands:
    ip link add dummy0 type dummy
    ip link add macsec0 link dummy0 type macsec
    ip link set macsec0 type macsec encrypt off

Splat looks like:
[61119.963483][ T9335] ==================================================================
[61119.964709][ T9335] BUG: KASAN: slab-out-of-bounds in macsec_changelink.part.34+0xb6/0x200 [macsec]
[61119.965787][ T9335] Read of size 160 at addr ffff888020d69c68 by task ip/9335
[61119.966699][ T9335]
[61119.966979][ T9335] CPU: 0 PID: 9335 Comm: ip Not tainted 5.6.0+ #503
[61119.967791][ T9335] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[61119.968914][ T9335] Call Trace:
[61119.969324][ T9335]  dump_stack+0x96/0xdb
[61119.969809][ T9335]  ? macsec_changelink.part.34+0xb6/0x200 [macsec]
[61119.970554][ T9335]  print_address_description.constprop.5+0x1be/0x360
[61119.971294][ T9335]  ? macsec_changelink.part.34+0xb6/0x200 [macsec]
[61119.971973][ T9335]  ? macsec_changelink.part.34+0xb6/0x200 [macsec]
[61119.972703][ T9335]  __kasan_report+0x12a/0x170
[61119.973323][ T9335]  ? macsec_changelink.part.34+0xb6/0x200 [macsec]
[61119.973942][ T9335]  kasan_report+0xe/0x20
[61119.974397][ T9335]  check_memory_region+0x149/0x1a0
[61119.974866][ T9335]  memcpy+0x1f/0x50
[61119.975209][ T9335]  macsec_changelink.part.34+0xb6/0x200 [macsec]
[61119.975825][ T9335]  ? macsec_get_stats64+0x3e0/0x3e0 [macsec]
[61119.976451][ T9335]  ? kernel_text_address+0x111/0x120
[61119.976990][ T9335]  ? pskb_expand_head+0x25f/0xe10
[61119.977503][ T9335]  ? stack_trace_save+0x82/0xb0
[61119.977986][ T9335]  ? memset+0x1f/0x40
[61119.978397][ T9335]  ? __nla_validate_parse+0x98/0x1ab0
[61119.978936][ T9335]  ? macsec_alloc_tfm+0x90/0x90 [macsec]
[61119.979511][ T9335]  ? __kasan_slab_free+0x111/0x150
[61119.980021][ T9335]  ? kfree+0xce/0x2f0
[61119.980700][ T9335]  ? netlink_trim+0x196/0x1f0
[61119.981420][ T9335]  ? nla_memcpy+0x90/0x90
[61119.982036][ T9335]  ? register_lock_class+0x19e0/0x19e0
[61119.982776][ T9335]  ? memcpy+0x34/0x50
[61119.983327][ T9335]  __rtnl_newlink+0x922/0x1270
[ ... ]

Fixes: 3cf3227a21d1 ("net: macsec: hardware offloading infrastructure")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet-sysfs: remove redundant assignment to variable ret
Colin Ian King [Thu, 9 Apr 2020 13:41:26 +0000 (14:41 +0100)]
net-sysfs: remove redundant assignment to variable ret

The variable ret is being initialized with a value that is never read
and it is being updated later with a new value.  The initialization is
redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: qrtr: send msgs from local of same id as broadcast
Wang Wenhu [Thu, 9 Apr 2020 02:53:53 +0000 (19:53 -0700)]
net: qrtr: send msgs from local of same id as broadcast

If the local node id(qrtr_local_nid) is not modified after its
initialization, it equals to the broadcast node id(QRTR_NODE_BCAST).
So the messages from local node should not be taken as broadcast
and keep the process going to send them out anyway.

The definitions are as follow:
static unsigned int qrtr_local_nid = NUMA_NO_NODE;

Fixes: fdf5fd397566 ("net: qrtr: Broadcast messages only from control port")
Signed-off-by: Wang Wenhu <wenhu.wang@vivo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge tag 'mlx5-fixes-2020-04-08' of git://git.kernel.org/pub/scm/linux/kernel/git...
David S. Miller [Thu, 9 Apr 2020 17:03:26 +0000 (10:03 -0700)]
Merge tag 'mlx5-fixes-2020-04-08' of git://git./linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
Mellanox, mlx5 fixes 2020-04-08

This series introduces some fixes to mlx5 driver.

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

For -stable v5.3
 ('net/mlx5: Fix frequent ioread PCI access during recovery')
 ('net/mlx5e: Add missing release firmware call')

For -stable v5.4
 ('net/mlx5e: Fix nest_level for vlan pop action')
 ('net/mlx5e: Fix pfnum in devlink port attribute')
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoDocumentation: devlink: fix broken link warning
Lothar Rubusch [Wed, 8 Apr 2020 22:09:31 +0000 (22:09 +0000)]
Documentation: devlink: fix broken link warning

At 'make htmldocs' the following warning is thrown:

Documentation/networking/devlink/devlink-trap.rst:302:
WARNING: undefined label: generic-packet-trap-groups

Fixes the warning by setting the label to the specified header,
within the same document.

Signed-off-by: Lothar Rubusch <l.rubusch@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoarm, bpf: Fix bugs with ALU64 {RSH, ARSH} BPF_K shift by 0
Luke Nelson [Wed, 8 Apr 2020 18:12:29 +0000 (18:12 +0000)]
arm, bpf: Fix bugs with ALU64 {RSH, ARSH} BPF_K shift by 0

The current arm BPF JIT does not correctly compile RSH or ARSH when the
immediate shift amount is 0. This causes the "rsh64 by 0 imm" and "arsh64
by 0 imm" BPF selftests to hang the kernel by reaching an instruction
the verifier determines to be unreachable.

The root cause is in how immediate right shifts are encoded on arm.
For LSR and ASR (logical and arithmetic right shift), a bit-pattern
of 00000 in the immediate encodes a shift amount of 32. When the BPF
immediate is 0, the generated code shifts by 32 instead of the expected
behavior (a no-op).

This patch fixes the bugs by adding an additional check if the BPF
immediate is 0. After the change, the above mentioned BPF selftests pass.

Fixes: 39c13c204bb11 ("arm: eBPF JIT compiler")
Co-developed-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Luke Nelson <luke.r.nels@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200408181229.10909-1-luke.r.nels@gmail.com
4 years agobpf: Fix use of sk->sk_reuseport from sk_assign
Joe Stringer [Wed, 8 Apr 2020 03:35:40 +0000 (20:35 -0700)]
bpf: Fix use of sk->sk_reuseport from sk_assign

In testing, we found that for request sockets the sk->sk_reuseport field
may yet be uninitialized, which caused bpf_sk_assign() to randomly
succeed or return -ESOCKTNOSUPPORT when handling the forward ACK in a
three-way handshake.

Fix it by only applying the reuseport check for full sockets.

Fixes: cf7fbe660f2d ("bpf: Add socket assign support")
Signed-off-by: Joe Stringer <joe@wand.net.nz>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20200408033540.10339-1-joe@wand.net.nz
4 years agonet/mlx5e: CT: Use rhashtable's ct entries instead of a separate list
Paul Blakey [Fri, 27 Mar 2020 09:12:31 +0000 (12:12 +0300)]
net/mlx5e: CT: Use rhashtable's ct entries instead of a separate list

Fixes CT entries list corruption.

After allowing parallel insertion/removals in upper nf flow table
layer, unprotected ct entries list can be corrupted by parallel add/del
on the same flow table.

CT entries list is only used while freeing a ct zone flow table to
go over all the ct entries offloaded on that zone/table, and flush
the table.

As rhashtable already provides an api to go over all the inserted entries,
fix the race by using the rhashtable iteration instead, and remove the list.

Fixes: 7da182a998d6 ("netfilter: flowtable: Use work entry per offload command")
Reviewed-by: Oz Shlomo <ozsh@mellanox.com>
Signed-off-by: Paul Blakey <paulb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5e: Fix devlink port netdev unregistration sequence
Parav Pandit [Fri, 3 Apr 2020 07:35:46 +0000 (02:35 -0500)]
net/mlx5e: Fix devlink port netdev unregistration sequence

In cited commit netdevice is registered after devlink port.

Unregistration flow should be mirror sequence of registration flow.
Hence, unregister netdevice before devlink port.

Fixes: 31e87b39ba9d ("net/mlx5e: Fix devlink port register sequence")
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5e: Fix pfnum in devlink port attribute
Parav Pandit [Fri, 3 Apr 2020 08:57:30 +0000 (03:57 -0500)]
net/mlx5e: Fix pfnum in devlink port attribute

Cited patch missed to extract PCI pf number accurately for PF and VF
port flavour. It considered PCI device + function number.
Due to this, device having non zero device number shown large pfnum.

Hence, use only PCI function number; to avoid similar errors, derive
pfnum one time for all port flavours.

Fixes: f60f315d339e ("net/mlx5e: Register devlink ports for physical link, PCI PF, VFs")
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5e: Fix missing pedit action after ct clear action
Roi Dayan [Sun, 29 Mar 2020 15:54:10 +0000 (18:54 +0300)]
net/mlx5e: Fix missing pedit action after ct clear action

With ct clear action we should not allocate the action in hw
and not release the mod_acts parsed in advance.
It will be done when handling the ct clear action.

Fixes: 1ef3018f5af3 ("net/mlx5e: CT: Support clear action")
Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Paul Blakey <paulb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5e: Fix nest_level for vlan pop action
Dmytro Linkin [Wed, 1 Apr 2020 11:41:27 +0000 (14:41 +0300)]
net/mlx5e: Fix nest_level for vlan pop action

Current value of nest_level, assigned from net_device lower_level value,
does not reflect the actual number of vlan headers, needed to pop.
For ex., if we have untagged ingress traffic sended over vlan devices,
instead of one pop action, driver will perform two pop actions.
To fix that, calculate nest_level as difference between vlan device and
parent device lower_levels.

Fixes: f3b0a18bb6cb ("net: remove unnecessary variables and callback")
Signed-off-by: Dmytro Linkin <dmitrolin@mellanox.com>
Signed-off-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5e: Add missing release firmware call
Eran Ben Elisha [Tue, 24 Mar 2020 13:04:26 +0000 (15:04 +0200)]
net/mlx5e: Add missing release firmware call

Once driver finishes flashing the firmware image, it should release it.

Fixes: 9c8bca2637b8 ("mlx5: Move firmware flash implementation to devlink")
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Reviewed-by: Aya Levin <ayal@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5: Fix condition for termination table cleanup
Eli Cohen [Sun, 29 Mar 2020 04:10:43 +0000 (07:10 +0300)]
net/mlx5: Fix condition for termination table cleanup

When we destroy rules from slow path we need to avoid destroying
termination tables since termination tables are never created in slow
path. By doing so we avoid destroying the termination table created for the
slow path.

Fixes: d8a2034f152a ("net/mlx5: Don't use termination tables in slow path")
Signed-off-by: Eli Cohen <eli@mellanox.com>
Reviewed-by: Oz Shlomo <ozsh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/mlx5: Fix frequent ioread PCI access during recovery
Moshe Shemesh [Mon, 30 Mar 2020 07:21:49 +0000 (10:21 +0300)]
net/mlx5: Fix frequent ioread PCI access during recovery

High frequency of PCI ioread calls during recovery flow may cause the
following trace on powerpc:

[ 248.670288] EEH: 2100000 reads ignored for recovering device at
location=Slot1 driver=mlx5_core pci addr=0000:01:00.1
[ 248.670331] EEH: Might be infinite loop in mlx5_core driver
[ 248.670361] CPU: 2 PID: 35247 Comm: kworker/u192:11 Kdump: loaded
Tainted: G OE ------------ 4.14.0-115.14.1.el7a.ppc64le #1
[ 248.670425] Workqueue: mlx5_health0000:01:00.1 health_recover_work
[mlx5_core]
[ 248.670471] Call Trace:
[ 248.670492] [c00020391c11b960] [c000000000c217ac] dump_stack+0xb0/0xf4
(unreliable)
[ 248.670548] [c00020391c11b9a0] [c000000000045818]
eeh_check_failure+0x5c8/0x630
[ 248.670631] [c00020391c11ba50] [c00000000068fce4]
ioread32be+0x114/0x1c0
[ 248.670692] [c00020391c11bac0] [c00800000dd8b400]
mlx5_error_sw_reset+0x160/0x510 [mlx5_core]
[ 248.670752] [c00020391c11bb60] [c00800000dd75824]
mlx5_disable_device+0x34/0x1d0 [mlx5_core]
[ 248.670822] [c00020391c11bbe0] [c00800000dd8affc]
health_recover_work+0x11c/0x3c0 [mlx5_core]
[ 248.670891] [c00020391c11bc80] [c000000000164fcc]
process_one_work+0x1bc/0x5f0
[ 248.670955] [c00020391c11bd20] [c000000000167f8c]
worker_thread+0xac/0x6b0
[ 248.671015] [c00020391c11bdc0] [c000000000171618] kthread+0x168/0x1b0
[ 248.671067] [c00020391c11be30] [c00000000000b65c]
ret_from_kernel_thread+0x5c/0x80

Reduce the PCI ioread frequency during recovery by using msleep()
instead of cond_resched()

Fixes: 3e5b72ac2f29 ("net/mlx5: Issue SW reset on FW assert")
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Reviewed-by: Feras Daoud <ferasda@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
4 years agonet/tls: fix const assignment warning
Arnd Bergmann [Wed, 8 Apr 2020 18:54:43 +0000 (20:54 +0200)]
net/tls: fix const assignment warning

Building with some experimental patches, I came across a warning
in the tls code:

include/linux/compiler.h:215:30: warning: assignment discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
  215 |  *(volatile typeof(x) *)&(x) = (val);  \
      |                              ^
net/tls/tls_main.c:650:4: note: in expansion of macro 'smp_store_release'
  650 |    smp_store_release(&saved_tcpv4_prot, prot);

This appears to be a legitimate warning about assigning a const pointer
into the non-const 'saved_tcpv4_prot' global. Annotate both the ipv4 and
ipv6 pointers 'const' to make the code internally consistent.

Fixes: 5bb4c45d466c ("net/tls: Read sk_prot once when building tls proto ops")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agol2tp: Allow management of tunnels and session in user namespace
Michael Weiß [Tue, 7 Apr 2020 11:11:48 +0000 (13:11 +0200)]
l2tp: Allow management of tunnels and session in user namespace

Creation and management of L2TPv3 tunnels and session through netlink
requires CAP_NET_ADMIN. However, a process with CAP_NET_ADMIN in a
non-initial user namespace gets an EPERM due to the use of the
genetlink GENL_ADMIN_PERM flag. Thus, management of L2TP VPNs inside
an unprivileged container won't work.

We replaced the GENL_ADMIN_PERM by the GENL_UNS_ADMIN_PERM flag
similar to other network modules which also had this problem, e.g.,
openvswitch (commit 4a92602aa1cd "openvswitch: allow management from
inside user namespaces") and nl80211 (commit 5617c6cd6f844 "nl80211:
Allow privileged operations from user namespaces").

I tested this in the container runtime trustm3 (trustm3.github.io)
and was able to create l2tp tunnels and sessions in unpriviliged
(user namespaced) containers using a private network namespace.
For other runtimes such as docker or lxc this should work, too.

Signed-off-by: Michael Weiß <michael.weiss@aisec.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'ionic-fw-upgrade-filter-fixes'
David S. Miller [Wed, 8 Apr 2020 20:02:32 +0000 (13:02 -0700)]
Merge branch 'ionic-fw-upgrade-filter-fixes'

Shannon Nelson says:

====================
ionic: fw upgrade filter fixes

With further testing of the fw-upgrade operations we found a
couple of issues that needed to be cleaned up:
 - the filters other than the base MAC address need to be
   reinstated into the device
 - we don't need to remove the station MAC filter if it
   isn't changing from a previous MAC filter
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: set station addr only if needed
Shannon Nelson [Wed, 8 Apr 2020 16:19:12 +0000 (09:19 -0700)]
ionic: set station addr only if needed

The code was working too hard and in some cases was trying to
delete filters that weren't there, generating a potentially
misleading error message.
    IONIC_CMD_RX_FILTER_DEL (32) failed: IONIC_RC_ENOENT (-2)

Fixes: 2a654540be10 ("ionic: Add Rx filter and rx_mode ndo support")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoionic: replay filters after fw upgrade
Shannon Nelson [Wed, 8 Apr 2020 16:19:11 +0000 (09:19 -0700)]
ionic: replay filters after fw upgrade

The NIC's filters are lost in the midst of the fw-upgrade
so we need to replay them into the FW.  We also remove the
unused ionic_rx_filter_del() function.

Fixes: c672412f6172 ("ionic: remove lifs on fw reset")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agotc-testing: remove duplicate code in tdc.py
Roman Mashak [Tue, 7 Apr 2020 17:13:25 +0000 (13:13 -0400)]
tc-testing: remove duplicate code in tdc.py

In set_operation_mode() function remove duplicated check for args.list
parameter, which is already done one line before.

Signed-off-by: Roman Mashak <mrv@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agohsr: check protocol version in hsr_newlink()
Taehee Yoo [Tue, 7 Apr 2020 13:23:21 +0000 (13:23 +0000)]
hsr: check protocol version in hsr_newlink()

In the current hsr code, only 0 and 1 protocol versions are valid.
But current hsr code doesn't check the version, which is received by
userspace.

Test commands:
    ip link add dummy0 type dummy
    ip link add dummy1 type dummy
    ip link add hsr0 type hsr slave1 dummy0 slave2 dummy1 version 4

In the test commands, version 4 is invalid.
So, the command should be failed.

After this patch, following error will occur.
"Error: hsr: Only versions 0..1 are supported."

Fixes: ee1c27977284 ("net/hsr: Added support for HSR v1")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoDocumentation: mdio_bus.c - fix warnings
Lothar Rubusch [Mon, 6 Apr 2020 21:29:20 +0000 (21:29 +0000)]
Documentation: mdio_bus.c - fix warnings

Fix wrong parameter description and related warnings at 'make htmldocs'.

Signed-off-by: Lothar Rubusch <l.rubusch@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: sched: Fix setting last executed chain on skb extension
Paul Blakey [Mon, 6 Apr 2020 15:36:56 +0000 (18:36 +0300)]
net: sched: Fix setting last executed chain on skb extension

After driver sets the missed chain on the tc skb extension it is
consumed (deleted) by tc_classify_ingress and tc jumps to that chain.
If tc now misses on this chain (either no match, or no goto action),
then last executed chain remains 0, and the skb extension is not re-added,
and the next datapath (ovs) will start from 0.

Fix that by setting last executed chain to the chain read from the skb
extension, so if there is a miss, we set it back.

Fixes: af699626ee26 ("net: sched: Support specifying a starting chain via tc skb ext")
Reviewed-by: Oz Shlomo <ozsh@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Paul Blakey <paulb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: revert default NAPI poll timeout to 2 jiffies
Konstantin Khlebnikov [Mon, 6 Apr 2020 11:39:32 +0000 (14:39 +0300)]
net: revert default NAPI poll timeout to 2 jiffies

For HZ < 1000 timeout 2000us rounds up to 1 jiffy but expires randomly
because next timer interrupt could come shortly after starting softirq.

For commonly used CONFIG_HZ=1000 nothing changes.

Fixes: 7acf8a1e8a28 ("Replace 2 jiffies with sysctl netdev_budget_usecs to enable softirq tuning")
Reported-by: Dmitry Yakunin <zeil@yandex-team.ru>
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: ethernet: mediatek: move mt7623 settings out off the mt7530
René van Dorst [Sun, 5 Apr 2020 21:42:54 +0000 (05:42 +0800)]
net: ethernet: mediatek: move mt7623 settings out off the mt7530

Moving mt7623 logic out off mt7530, is required to make hardware setting
consistent after we introduce phylink to mtk driver.

Fixes: b8fc9f30821e ("net: ethernet: mediatek: Add basic PHYLINK support")
Reviewed-by: Sean Wang <sean.wang@mediatek.com>
Tested-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: René van Dorst <opensource@vdorst.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: dsa: mt7530: move mt7623 settings out off the mt7530
René van Dorst [Sun, 5 Apr 2020 21:42:53 +0000 (05:42 +0800)]
net: dsa: mt7530: move mt7623 settings out off the mt7530

Moving mt7623 logic out off mt7530, is required to make hardware setting
consistent after we introduce phylink to mtk driver.

Fixes: ca366d6c889b ("net: dsa: mt7530: Convert to PHYLINK API")
Reviewed-by: Sean Wang <sean.wang@mediatek.com>
Tested-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: René van Dorst <opensource@vdorst.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: ipv6: do not consider routes via gateways for anycast address check
Tim Stallard [Fri, 3 Apr 2020 20:26:21 +0000 (21:26 +0100)]
net: ipv6: do not consider routes via gateways for anycast address check

The behaviour for what is considered an anycast address changed in
commit 45e4fd26683c ("ipv6: Only create RTF_CACHE routes after
encountering pmtu exception"). This now considers the first
address in a subnet where there is a route via a gateway
to be an anycast address.

This breaks path MTU discovery and traceroutes when a host in a
remote network uses the address at the start of a prefix
(eg 2600:: advertised as 2600::/48 in the DFZ) as ICMP errors
will not be sent to anycast addresses.

This patch excludes any routes with a gateway, or via point to
point links, like the behaviour previously from
rt6_is_gw_or_nonexthop in net/ipv6/route.c.

This can be tested with:
ip link add v1 type veth peer name v2
ip netns add test
ip netns exec test ip link set lo up
ip link set v2 netns test
ip link set v1 up
ip netns exec test ip link set v2 up
ip addr add 2001:db8::1/64 dev v1 nodad
ip addr add 2001:db8:100:: dev lo nodad
ip netns exec test ip addr add 2001:db8::2/64 dev v2 nodad
ip netns exec test ip route add unreachable 2001:db8:1::1
ip netns exec test ip route add 2001:db8:100::/64 via 2001:db8::1
ip netns exec test sysctl net.ipv6.conf.all.forwarding=1
ip route add 2001:db8:1::1 via 2001:db8::2
ping -I 2001:db8::1 2001:db8:1::1 -c1
ping -I 2001:db8:100:: 2001:db8:1::1 -c1
ip addr delete 2001:db8:100:: dev lo
ip netns delete test

Currently the first ping will get back a destination unreachable ICMP
error, but the second will never get a response, with "icmp6_send:
acast source" logged. After this patch, both get destination
unreachable ICMP replies.

Fixes: 45e4fd26683c ("ipv6: Only create RTF_CACHE routes after encountering pmtu exception")
Signed-off-by: Tim Stallard <code@timstallard.me.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: icmp6: do not select saddr from iif when route has prefsrc set
Tim Stallard [Fri, 3 Apr 2020 20:22:57 +0000 (21:22 +0100)]
net: icmp6: do not select saddr from iif when route has prefsrc set

Since commit fac6fce9bdb5 ("net: icmp6: provide input address for
traceroute6") ICMPv6 errors have source addresses from the ingress
interface. However, this overrides when source address selection is
influenced by setting preferred source addresses on routes.

This can result in ICMP errors being lost to upstream BCP38 filters
when the wrong source addresses are used, breaking path MTU discovery
and traceroute.

This patch sets the modified source address selection to only take place
when the route used has no prefsrc set.

It can be tested with:

ip link add v1 type veth peer name v2
ip netns add test
ip netns exec test ip link set lo up
ip link set v2 netns test
ip link set v1 up
ip netns exec test ip link set v2 up
ip addr add 2001:db8::1/64 dev v1 nodad
ip addr add 2001:db8::3 dev v1 nodad
ip netns exec test ip addr add 2001:db8::2/64 dev v2 nodad
ip netns exec test ip route add unreachable 2001:db8:1::1
ip netns exec test ip addr add 2001:db8:100::1 dev lo
ip netns exec test ip route add 2001:db8::1 dev v2 src 2001:db8:100::1
ip route add 2001:db8:1000::1 via 2001:db8::2
traceroute6 -s 2001:db8::1 2001:db8:1000::1
traceroute6 -s 2001:db8::3 2001:db8:1000::1
ip netns delete test

Output before:
$ traceroute6 -s 2001:db8::1 2001:db8:1000::1
traceroute to 2001:db8:1000::1 (2001:db8:1000::1), 30 hops max, 80 byte packets
 1  2001:db8::2 (2001:db8::2)  0.843 ms !N  0.396 ms !N  0.257 ms !N
$ traceroute6 -s 2001:db8::3 2001:db8:1000::1
traceroute to 2001:db8:1000::1 (2001:db8:1000::1), 30 hops max, 80 byte packets
 1  2001:db8::2 (2001:db8::2)  0.772 ms !N  0.257 ms !N  0.357 ms !N

After:
$ traceroute6 -s 2001:db8::1 2001:db8:1000::1
traceroute to 2001:db8:1000::1 (2001:db8:1000::1), 30 hops max, 80 byte packets
 1  2001:db8:100::1 (2001:db8:100::1)  8.885 ms !N  0.310 ms !N  0.174 ms !N
$ traceroute6 -s 2001:db8::3 2001:db8:1000::1
traceroute to 2001:db8:1000::1 (2001:db8:1000::1), 30 hops max, 80 byte packets
 1  2001:db8::2 (2001:db8::2)  1.403 ms !N  0.205 ms !N  0.313 ms !N

Fixes: fac6fce9bdb5 ("net: icmp6: provide input address for traceroute6")
Signed-off-by: Tim Stallard <code@timstallard.me.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'fec-fix-wake-on-lan'
David S. Miller [Wed, 8 Apr 2020 01:23:38 +0000 (18:23 -0700)]
Merge branch 'fec-fix-wake-on-lan'

Martin Fuzzey says:

====================
Fix Wake on lan with FEC on i.MX6

This series fixes WoL support with the FEC on i.MX6
The support was already in mainline but seems to have bitrotted
somewhat.

Only tested with i.MX6DL

Changes V2->V3
Patch 1:
fix non initialized variable introduced in V2 causing
probe to sometimes fail.

Patch 2:
remove /delete-property/interrupts-extended in
arch/arm/boot/dts/imx6qp.dtsi.

Patches 3 and 4:
Add received Acked-by and RB tags.

Changes V1->V2
Move the register offset and bit number from the DT to driver code
Add SOB from Fugang Duan for the NXP code on which this is based
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoARM: dts: imx6: add fec gpr property.
Martin Fuzzey [Thu, 2 Apr 2020 13:51:30 +0000 (15:51 +0200)]
ARM: dts: imx6: add fec gpr property.

This is required for wake on lan on i.MX6

Signed-off-by: Martin Fuzzey <martin.fuzzey@flowbird.group>
Reviewed-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodt-bindings: fec: document the new gpr property.
Martin Fuzzey [Thu, 2 Apr 2020 13:51:29 +0000 (15:51 +0200)]
dt-bindings: fec: document the new gpr property.

This property allows the gpr register bit to be defined
for wake on lan support.

Signed-off-by: Martin Fuzzey <martin.fuzzey@flowbird.group>
Reviewed-by: Fugang Duan <fugang.duan@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoARM: dts: imx6: Use gpc for FEC interrupt controller to fix wake on LAN.
Martin Fuzzey [Thu, 2 Apr 2020 13:51:28 +0000 (15:51 +0200)]
ARM: dts: imx6: Use gpc for FEC interrupt controller to fix wake on LAN.

In order to wake from suspend by ethernet magic packets the GPC
must be used as intc does not have wakeup functionality.

But the FEC DT node currently uses interrupt-extended,
specificying intc, thus breaking WoL.

This problem is probably fallout from the stacked domain conversion
as intc used to chain to GPC.

So replace "interrupts-extended" by "interrupts" to use the default
parent which is GPC.

Fixes: b923ff6af0d5 ("ARM: imx6: convert GPC to stacked domains")

Signed-off-by: Martin Fuzzey <martin.fuzzey@flowbird.group>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: fec: set GPR bit on suspend by DT configuration.
Martin Fuzzey [Thu, 2 Apr 2020 13:51:27 +0000 (15:51 +0200)]
net: fec: set GPR bit on suspend by DT configuration.

On some SoCs, such as the i.MX6, it is necessary to set a bit
in the SoC level GPR register before suspending for wake on lan
to work.

The fec platform callback sleep_mode_enable was intended to allow this
but the platform implementation was NAK'd back in 2015 [1]

This means that, currently, wake on lan is broken on mainline for
the i.MX6 at least.

So implement the required bit setting in the fec driver by itself
by adding a new optional DT property indicating the GPR register
and adding the offset and bit information to the driver.

[1] https://www.spinics.net/lists/netdev/msg310922.html

Signed-off-by: Martin Fuzzey <martin.fuzzey@flowbird.group>
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: sock.h: fix skb_steal_sock() kernel-doc
Lothar Rubusch [Tue, 7 Apr 2020 22:55:25 +0000 (22:55 +0000)]
net: sock.h: fix skb_steal_sock() kernel-doc

Fix warnings related to kernel-doc notation, and wording in
function description.

Signed-off-by: Lothar Rubusch <l.rubusch@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
David S. Miller [Wed, 8 Apr 2020 01:08:06 +0000 (18:08 -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 net, they are:

1) Fix spurious overlap condition in the rbtree tree, from Stefano Brivio.

2) Fix possible uninitialized pointer dereference in nft_lookup.

3) IDLETIMER v1 target matches the Android layout, from
   Maciej Zenczykowski.

4) Dangling pointer in nf_tables_set_alloc_name, from Eric Dumazet.

5) Fix RCU warning splat in ipset find_set_type(), from Amol Grover.

6) Report EOPNOTSUPP on unsupported set flags and object types in sets.

7) Add NFT_SET_CONCAT flag to provide consistent error reporting
   when users defines set with ranges in concatenations in old kernels.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoselftests/bpf: Add test for bpf_get_link_xdp_id
Andrey Ignatov [Tue, 7 Apr 2020 05:09:46 +0000 (22:09 -0700)]
selftests/bpf: Add test for bpf_get_link_xdp_id

Add xdp_info selftest that makes sure that bpf_get_link_xdp_id returns
valid prog_id for different input modes:

  * w/ and w/o flags when no program is attached;
  * w/ and w/o flags when one program is attached.

Signed-off-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/2a9a6d1ce33b91ccc1aa3de6dba2d309f2062811.1586236080.git.rdna@fb.com
4 years agolibbpf: Fix bpf_get_link_xdp_id flags handling
Andrey Ignatov [Tue, 7 Apr 2020 05:09:45 +0000 (22:09 -0700)]
libbpf: Fix bpf_get_link_xdp_id flags handling

Currently if one of XDP_FLAGS_{DRV,HW,SKB}_MODE flags is passed to
bpf_get_link_xdp_id() and there is a single XDP program attached to
ifindex, that program's id will be returned by bpf_get_link_xdp_id() in
prog_id argument no matter what mode the program is attached in, i.e.
flags argument is not taken into account.

For example, if there is a single program attached with
XDP_FLAGS_SKB_MODE but user calls bpf_get_link_xdp_id() with flags =
XDP_FLAGS_DRV_MODE, that skb program will be returned.

Fix it by returning info->prog_id only if user didn't specify flags. If
flags is specified then return corresponding mode-specific-field from
struct xdp_link_info.

The initial error was introduced in commit 50db9f073188 ("libbpf: Add a
support for getting xdp prog id on ifindex") and then refactored in
473f4e133a12 so 473f4e133a12 is used in the Fixes tag.

Fixes: 473f4e133a12 ("libbpf: Add bpf_get_link_xdp_info() function to get more XDP information")
Signed-off-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/bpf/0e9e30490b44b447bb2bebc69c7135e7fe7e4e40.1586236080.git.rdna@fb.com
4 years agoriscv, bpf: Fix offset range checking for auipc+jalr on RV64
Luke Nelson [Mon, 6 Apr 2020 22:16:04 +0000 (22:16 +0000)]
riscv, bpf: Fix offset range checking for auipc+jalr on RV64

The existing code in emit_call on RV64 checks that the PC-relative offset
to the function fits in 32 bits before calling emit_jump_and_link to emit
an auipc+jalr pair. However, this check is incorrect because offsets in
the range [2^31 - 2^11, 2^31 - 1] cannot be encoded using auipc+jalr on
RV64 (see discussion [1]). The RISC-V spec has recently been updated
to reflect this fact [2, 3].

This patch fixes the problem by moving the check on the offset into
emit_jump_and_link and modifying it to the correct range of encodable
offsets, which is [-2^31 - 2^11, 2^31 - 2^11). This also enforces the
check on the offset to other uses of emit_jump_and_link (e.g., BPF_JA)
as well.

Currently, this bug is unlikely to be triggered, because the memory
region from which JITed images are allocated is close enough to kernel
text for the offsets to not become too large; and because the bounds on
BPF program size are small enough. This patch prevents this problem from
becoming an issue if either of these change.

[1]: https://groups.google.com/a/groups.riscv.org/forum/#!topic/isa-dev/bwWFhBnnZFQ
[2]: https://github.com/riscv/riscv-isa-manual/commit/b1e42e09ac55116dbf9de5e4fb326a5a90e4a993
[3]: https://github.com/riscv/riscv-isa-manual/commit/4c1b2066ebd2965a422e41eb262d0a208a7fea07

Signed-off-by: Luke Nelson <luke.r.nels@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200406221604.18547-1-luke.r.nels@gmail.com
4 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Tue, 7 Apr 2020 21:11:54 +0000 (14:11 -0700)]
Merge branch 'akpm' (patches from Andrew)

Merge more updates from Andrew Morton:

 - a lot more of MM, quite a bit more yet to come: (memcg, pagemap,
   vmalloc, pagealloc, migration, thp, ksm, madvise, virtio,
   userfaultfd, memory-hotplug, shmem, rmap, zswap, zsmalloc, cleanups)

 - various other subsystems (procfs, misc, MAINTAINERS, bitops, lib,
   checkpatch, epoll, binfmt, kallsyms, reiserfs, kmod, gcov, kconfig,
   ubsan, fault-injection, ipc)

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (158 commits)
  ipc/shm.c: make compat_ksys_shmctl() static
  ipc/mqueue.c: fix a brace coding style issue
  lib/Kconfig.debug: fix a typo "capabilitiy" -> "capability"
  ubsan: include bug type in report header
  kasan: unset panic_on_warn before calling panic()
  ubsan: check panic_on_warn
  drivers/misc/lkdtm/bugs.c: add arithmetic overflow and array bounds checks
  ubsan: split "bounds" checker from other options
  ubsan: add trap instrumentation option
  init/Kconfig: clean up ANON_INODES and old IO schedulers options
  kernel/gcov/fs.c: replace zero-length array with flexible-array member
  gcov: gcc_3_4: replace zero-length array with flexible-array member
  gcov: gcc_4_7: replace zero-length array with flexible-array member
  kernel/kmod.c: fix a typo "assuems" -> "assumes"
  reiserfs: clean up several indentation issues
  kallsyms: unexport kallsyms_lookup_name() and kallsyms_on_each_symbol()
  samples/hw_breakpoint: drop use of kallsyms_lookup_name()
  samples/hw_breakpoint: drop HW_BREAKPOINT_R when reporting writes
  fs/binfmt_elf.c: don't free interpreter's ELF pheaders on common path
  fs/binfmt_elf.c: allocate less for static executable
  ...

4 years agoMerge tag 'nfs-for-5.7-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Tue, 7 Apr 2020 20:51:39 +0000 (13:51 -0700)]
Merge tag 'nfs-for-5.7-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client updates from Trond Myklebust:
 "Highlights include:

  Stable fixes:
   - Fix a page leak in nfs_destroy_unlinked_subrequests()

   - Fix use-after-free issues in nfs_pageio_add_request()

   - Fix new mount code constant_table array definitions

   - finish_automount() requires us to hold 2 refs to the mount record

  Features:
   - Improve the accuracy of telldir/seekdir by using 64-bit cookies
     when possible.

   - Allow one RDMA active connection and several zombie connections to
     prevent blocking if the remote server is unresponsive.

   - Limit the size of the NFS access cache by default

   - Reduce the number of references to credentials that are taken by
     NFS

   - pNFS files and flexfiles drivers now support per-layout segment
     COMMIT lists.

   - Enable partial-file layout segments in the pNFS/flexfiles driver.

   - Add support for CB_RECALL_ANY to the pNFS flexfiles layout type

   - pNFS/flexfiles Report NFS4ERR_DELAY and NFS4ERR_GRACE errors from
     the DS using the layouterror mechanism.

  Bugfixes and cleanups:
   - SUNRPC: Fix krb5p regressions

   - Don't specify NFS version in "UDP not supported" error

   - nfsroot: set tcp as the default transport protocol

   - pnfs: Return valid stateids in nfs_layout_find_inode_by_stateid()

   - alloc_nfs_open_context() must use the file cred when available

   - Fix locking when dereferencing the delegation cred

   - Fix memory leaks in O_DIRECT when nfs_get_lock_context() fails

   - Various clean ups of the NFS O_DIRECT commit code

   - Clean up RDMA connect/disconnect

   - Replace zero-length arrays with C99-style flexible arrays"

* tag 'nfs-for-5.7-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (86 commits)
  NFS: Clean up process of marking inode stale.
  SUNRPC: Don't start a timer on an already queued rpc task
  NFS/pnfs: Reference the layout cred in pnfs_prepare_layoutreturn()
  NFS/pnfs: Fix dereference of layout cred in pnfs_layoutcommit_inode()
  NFS: Beware when dereferencing the delegation cred
  NFS: Add a module parameter to set nfs_mountpoint_expiry_timeout
  NFS: finish_automount() requires us to hold 2 refs to the mount record
  NFS: Fix a few constant_table array definitions
  NFS: Try to join page groups before an O_DIRECT retransmission
  NFS: Refactor nfs_lock_and_join_requests()
  NFS: Reverse the submission order of requests in __nfs_pageio_add_request()
  NFS: Clean up nfs_lock_and_join_requests()
  NFS: Remove the redundant function nfs_pgio_has_mirroring()
  NFS: Fix memory leaks in nfs_pageio_stop_mirroring()
  NFS: Fix a request reference leak in nfs_direct_write_clear_reqs()
  NFS: Fix use-after-free issues in nfs_pageio_add_request()
  NFS: Fix races nfs_page_group_destroy() vs nfs_destroy_unlinked_subrequests()
  NFS: Fix a page leak in nfs_destroy_unlinked_subrequests()
  NFS: Remove unused FLUSH_SYNC support in nfs_initiate_pgio()
  pNFS/flexfiles: Specify the layout segment range in LAYOUTGET
  ...

4 years agoMerge tag 'f2fs-for-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk...
Linus Torvalds [Tue, 7 Apr 2020 20:48:26 +0000 (13:48 -0700)]
Merge tag 'f2fs-for-5.7-rc1' of git://git./linux/kernel/git/jaegeuk/f2fs

Pull f2fs updates from Jaegeuk Kim:
 "In this round, we've mainly focused on fixing bugs and addressing
  issues in recently introduced compression support.

  Enhancement:
   - add zstd support, and set LZ4 by default
   - add ioctl() to show # of compressed blocks
   - show mount time in debugfs
   - replace rwsem with spinlock
   - avoid lock contention in DIO reads

  Some major bug fixes wrt compression:
   - compressed block count
   - memory access and leak
   - remove obsolete fields
   - flag controls

  Other bug fixes and clean ups:
   - fix overflow when handling .flags in inode_info
   - fix SPO issue during resize FS flow
   - fix compression with fsverity enabled
   - potential deadlock when writing compressed pages
   - show missing mount options"

* tag 'f2fs-for-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (66 commits)
  f2fs: keep inline_data when compression conversion
  f2fs: fix to disable compression on directory
  f2fs: add missing CONFIG_F2FS_FS_COMPRESSION
  f2fs: switch discard_policy.timeout to bool type
  f2fs: fix to verify tpage before releasing in f2fs_free_dic()
  f2fs: show compression in statx
  f2fs: clean up dic->tpages assignment
  f2fs: compress: support zstd compress algorithm
  f2fs: compress: add .{init,destroy}_decompress_ctx callback
  f2fs: compress: fix to call missing destroy_compress_ctx()
  f2fs: change default compression algorithm
  f2fs: clean up {cic,dic}.ref handling
  f2fs: fix to use f2fs_readpage_limit() in f2fs_read_multi_pages()
  f2fs: xattr.h: Make stub helpers inline
  f2fs: fix to avoid double unlock
  f2fs: fix potential .flags overflow on 32bit architecture
  f2fs: fix NULL pointer dereference in f2fs_verity_work()
  f2fs: fix to clear PG_error if fsverity failed
  f2fs: don't call fscrypt_get_encryption_info() explicitly in f2fs_tmpfile()
  f2fs: don't trigger data flush in foreground operation
  ...

4 years agoMerge tag 'for-linus-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw...
Linus Torvalds [Tue, 7 Apr 2020 19:40:56 +0000 (12:40 -0700)]
Merge tag 'for-linus-5.7-rc1' of git://git./linux/kernel/git/rw/ubifs

Pull UBI and UBIFS updates from Richard Weinberger:

 - Fix for memory leaks around UBIFS orphan handling

 - Fix for memory leaks around UBI fastmap

 - Remove zero-length array from ubi-media.h

 - Fix for TNC lookup in UBIFS orphan code

* tag 'for-linus-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs:
  ubi: ubi-media.h: Replace zero-length array with flexible-array member
  ubifs: Fix out-of-bounds memory access caused by abnormal value of node_len
  ubi: fastmap: Only produce the initial anchor PEB when fastmap is used
  ubi: fastmap: Free unused fastmap anchor peb during detach
  ubifs: ubifs_add_orphan: Fix a memory leak bug
  ubifs: ubifs_jnl_write_inode: Fix a memory leak bug
  ubifs: Fix ubifs_tnc_lookup() usage in do_kill_orphans()

4 years agoMerge tag 'for-linus-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
Linus Torvalds [Tue, 7 Apr 2020 19:36:09 +0000 (12:36 -0700)]
Merge tag 'for-linus-5.7-rc1' of git://git./linux/kernel/git/rw/uml

Pull UML updates from Richard Weinberger:

 - New mode for time travel, external via virtio

 - Fixes for ubd to make sure no requests can get lost

 - Fixes for vector networking

 - Allow CONFIG_STATIC_LINK only when possible

 - Minor cleanups and fixes

* tag 'for-linus-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
  um: Remove some unnecessary NULL checks in vector_user.c
  um: vector: Avoid NULL ptr deference if transport is unset
  um: Make CONFIG_STATIC_LINK actually static
  um: Implement cpu_relax() as ndelay(1) for time-travel
  um: Implement ndelay/udelay in time-travel mode
  um: Implement time-travel=ext
  um: virtio: Implement VHOST_USER_PROTOCOL_F_INBAND_NOTIFICATIONS
  um: time-travel: Rewrite as an event scheduler
  um: Move timer-internal.h to non-shared
  hostfs: Use kasprintf() instead of fixed buffer formatting
  um: falloc.h needs to be directly included for older libc
  um: ubd: Retry buffer read on any kind of error
  um: ubd: Prevent buffer overrun on command completion
  um: Fix overlapping ELF segments when statically linked
  um: Delete never executed timer
  um: Don't overwrite ethtool driver version
  um: Fix len of file in create_pid_file
  um: Don't use console_drivers directly
  um: Cleanup CONFIG_IOSCHED_CFQ

4 years agoMerge tag 'for-linus' of git://github.com/openrisc/linux
Linus Torvalds [Tue, 7 Apr 2020 19:33:37 +0000 (12:33 -0700)]
Merge tag 'for-linus' of git://github.com/openrisc/linux

Pull OpenRISC updates from Stafford Horne:
 "A few cleanups all over the place, things of note:

   - Enable the clone3 syscall

   - Remove CONFIG_CROSS_COMPILE from Krzysztof Kozlowski

   - Update to use mmgrab from Julia Lawall"

* tag 'for-linus' of git://github.com/openrisc/linux:
  openrisc: Remove obsolete show_trace_task function
  openrisc: Cleanup copy_thread_tls docs and comments
  openrisc: Enable the clone3 syscall
  openrisc: Convert copy_thread to copy_thread_tls
  openrisc: use mmgrab
  openrisc: configs: Cleanup CONFIG_CROSS_COMPILE