Merge tag 'linux-can-fixes-for-5.18-20220514' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2022-05-14

this is a pull request of 2 patches for net/master.

Changes to linux-can-fixes-for-5.18-20220513:
- adjusted Fixes: Tag on "Revert "can: m_can: pci: use custom bit timings for Elkhart Lake""
  (Thanks Jakub)

Both patches are by Jarkko Nikula, target the m_can PCI driver
bindings, and fix usage of wrong bit timing constants for the Elkhart
Lake platform.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Now when Intel Elkhart Lake uses again common bit timing and there are
no other users for custom bit timing, we can bring back the changes
done by the commit 0ddd83fb ("can: m_can: remove support for
custom bit timing").

This effectively reverts commit ea768b2f ("Revert "can: m_can:
remove support for custom bit timing"") while taking into account
commit ea22ba40 ("can: m_can: make custom bittiming fields const")
and commit 7d4a101c ("can: dev: add sanity check in
can_set_static_ctrlmode()").

Link: https://lore.kernel.org/all/20220512124144.536850-2-jarkko.nikula@linux.intel.comSigned-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

This reverts commit 0e8ffdf3b86dfd44b651f91b12fcae76c25c453b.

Commit 0e8ffdf3b86d ("can: m_can: pci: use custom bit timings for
Elkhart Lake") broke the test case using bitrate switching.

| ip link set can0 up type can bitrate 500000 dbitrate 4000000 fd on
| ip link set can1 up type can bitrate 500000 dbitrate 4000000 fd on
| candump can0 &
| cangen can1 -I 0x800 -L 64 -e -fb \
|     -D 11223344deadbeef55667788feedf00daabbccdd44332211 -n 1 -v -v

Above commit does everything correctly according to the datasheet.
However datasheet wasn't correct.

I got confirmation from hardware engineers that the actual CAN
hardware on Intel Elkhart Lake is based on M_CAN version v3.2.0.
Datasheet was mirroring values from an another specification which was
based on earlier M_CAN version leading to wrong bit timings.

Therefore revert the commit and switch back to common bit timings.

Fixes: ea4c1787 ("can: m_can: pci: use custom bit timings for Elkhart Lake")
Link: https://lore.kernel.org/all/20220512124144.536850-1-jarkko.nikula@linux.intel.comSigned-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reported-by: Chee Hou Ong <chee.houx.ong@intel.com>
Reported-by: Aman Kumar <aman.kumar@intel.com>
Reported-by: Pallavi Kumari <kumari.pallavi@intel.com>
Cc: <stable@vger.kernel.org> # v5.16+
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

In gem_rx_refill rx_prepared_head is incremented at the beginning of
the while loop preparing the skb and data buffers. If the skb or data
buffer allocation fails, this BD will be unusable BDs until the head
loops back to the same BD (and obviously buffer allocation succeeds).
In the unlikely event that there's a string of allocation failures,
there will be an equal number of unusable BDs and an inconsistent RX
BD chain. Hence increment the head at the end of the while loop to be
clean.

Fixes: 4df95131 ("net/macb: change RX path for GEM")
Signed-off-by: Harini Katakam <harini.katakam@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220512171900.32593-1-harini.katakam@xilinx.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Mat Martineau says:

====================
mptcp: Subflow accounting fix

This series contains a bug fix affecting the in-kernel path manager
(patch 1), where closing subflows would sometimes not adjust the PM's
count of active subflows. Patch 2 updates the selftests to exercise the
new code.
====================

Link: https://lore.kernel.org/r/20220512232642.541301-1-mathew.j.martineau@linux.intel.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Add and delete a bunch of endpoints and verify the
respect of configured limits.

This covers the codepath introduced by the previous patch.

Fixes: 69c6ce7b ("selftests: mptcp: add implicit endpoint test case")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

If the PM closes a fully established MPJ subflow or the subflow
creation errors out in it's early stage the subflows counter is
not bumped accordingly.

This change adds the missing accounting, additionally taking care
of updating accordingly the 'accept_subflow' flag.

Fixes: a88c9e49 ("mptcp: do not block subflows creation on errors")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

This reverts commits:

0dad4087 ("tcp/dccp: get rid of inet_twsk_purge()")
d507204d ("tcp/dccp: add tw->tw_bslot")

As Leonard pointed out, a newly allocated netns can happen
to reuse a freed 'struct net'.

While TCP TW timers were covered by my patches, other things were not:

1) Lookups in rx path (INET_MATCH() and INET6_MATCH()), as they look
  at 4-tuple plus the 'struct net' pointer.

2) /proc/net/tcp[6] and inet_diag, same reason.

3) hashinfo->bhash[], same reason.

Fixing all this seems risky, lets instead revert.

In the future, we might have a per netns tcp hash table, or
a per netns list of timewait sockets...

Fixes: 0dad4087 ("tcp/dccp: get rid of inet_twsk_purge()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Leonard Crestez <cdleonard@gmail.com>
Tested-by: Leonard Crestez <cdleonard@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Alex Elder says:

====================
net: ipa: three bug fixes

This series contains three somewhat unrelated minor bug fixes.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

In ipa_qmi_ready(), the "ipa" local variable is set when
initialized, but then set again just before it's first used.
One or the other is enough, so get rid of the first one.

References: https://lore.kernel.org/lkml/200de1bd-0f01-c334-ca18-43eed783dfac@intel.com/Reported-by: kernel test robot <lkp@intel.com>
Fixes: 530f9216 ("soc: qcom: ipa: AP/modem communications")
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Each time we are notified that some number of transactions on an RX
channel has completed, we record the number of bytes that have been
transferred since the previous notification.  We also track the
number of transactions completed, but that is not currently being
calculated correctly; we're currently counting the number of such
notifications, but each notification can represent many transaction
completions.  Fix this.

Fixes: 650d1603 ("soc: qcom: ipa: the generic software interface")
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

If an RX endpoint receives packets containing status headers, and a
packet in the buffer is not dropped, ipa_endpoint_skb_copy() is
responsible for wrapping the packet data in an SKB and forwarding it
to ipa_modem_skb_rx() for further processing.

If ipa_endpoint_skb_copy() gets a null pointer from build_skb(), it
just returns early.  But in the process it doesn't record that as a
dropped packet in the network device statistics.

Instead, call ipa_modem_skb_rx() whether or not the SKB pointer is
NULL; that function ensures the statistics are properly updated.

Fixes: 1b65bbcc ("net: ipa: skip SKB copy if no netdev")
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Pull networking fixes from Jakub Kicinski:
 "Including fixes from wireless, and bluetooth.

  No outstanding fires.

  Current release - regressions:

   - eth: atlantic: always deep reset on pm op, fix null-deref

  Current release - new code bugs:

   - rds: use maybe_get_net() when acquiring refcount on TCP sockets
     [refinement of a previous fix]

   - eth: ocelot: mark traps with a bool instead of guessing type based
     on list membership

  Previous releases - regressions:

   - net: fix skipping features in for_each_netdev_feature()

   - phy: micrel: fix null-derefs on suspend/resume and probe

   - bcmgenet: check for Wake-on-LAN interrupt probe deferral

  Previous releases - always broken:

   - ipv4: drop dst in multicast routing path, prevent leaks

   - ping: fix address binding wrt vrf

   - net: fix wrong network header length when BPF protocol translation
     is used on skbs with a fraglist

   - bluetooth: fix the creation of hdev->name

   - rfkill: uapi: fix RFKILL_IOCTL_MAX_SIZE ioctl request definition

   - wifi: iwlwifi: iwl-dbg: use del_timer_sync() before freeing

   - wifi: ath11k: reduce the wait time of 11d scan and hw scan while
     adding an interface

   - mac80211: fix rx reordering with non explicit / psmp ack policy

   - mac80211: reset MBSSID parameters upon connection

   - nl80211: fix races in nl80211_set_tx_bitrate_mask()

   - tls: fix context leak on tls_device_down

   - sched: act_pedit: really ensure the skb is writable

   - batman-adv: don't skb_split skbuffs with frag_list

   - eth: ocelot: fix various issues with TC actions (null-deref; bad
     stats; ineffective drops; ineffective filter removal)"

* tag 'net-5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (61 commits)
  tls: Fix context leak on tls_device_down
  net: sfc: ef10: fix memory leak in efx_ef10_mtd_probe()
  net/smc: non blocking recvmsg() return -EAGAIN when no data and signal_pending
  net: dsa: bcm_sf2: Fix Wake-on-LAN with mac_link_down()
  mlxsw: Avoid warning during ip6gre device removal
  net: bcmgenet: Check for Wake-on-LAN interrupt probe deferral
  net: ethernet: mediatek: ppe: fix wrong size passed to memset()
  Bluetooth: Fix the creation of hdev->name
  i40e: i40e_main: fix a missing check on list iterator
  net/sched: act_pedit: really ensure the skb is writable
  s390/lcs: fix variable dereferenced before check
  s390/ctcm: fix potential memory leak
  s390/ctcm: fix variable dereferenced before check
  net: atlantic: verify hw_head_ lies within TX buffer ring
  net: atlantic: add check for MAX_SKB_FRAGS
  net: atlantic: reduce scope of is_rsc_complete
  net: atlantic: fix "frag[0] not initialized"
  net: stmmac: fix missing pci_disable_device() on error in stmmac_pci_probe()
  net: phy: micrel: Fix incorrect variable type in micrel
  decnet: Use container_of() for struct dn_neigh casts
  ...

Pull cgroup fix from Tejun Heo:
 "Waiman's fix for a cgroup2 cpuset bug where it could miss nodes which
  were hot-added"

* 'for-5.18-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup/cpuset: Remove cpus_allowed/mems_allowed setup in cpuset_init_smp()

Pull fs fixes from Jan Kara:
 "Three fixes that I'd still like to get to 5.18:

   - add a missing sanity check in the fanotify FAN_RENAME feature
     (added in 5.17, let's fix it before it gets wider usage in
     userspace)

   - udf fix for recently introduced filesystem corruption issue

   - writeback fix for a race in inode list handling that can lead to
     delayed writeback and possible dirty throttling stalls"

* tag 'fixes_for_v5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  udf: Avoid using stale lengthOfImpUse
  writeback: Avoid skipping inode writeback
  fanotify: do not allow setting dirent events in mask of non-dir

The commit cited below claims to fix a use-after-free condition after
tls_device_down. Apparently, the description wasn't fully accurate. The
context stayed alive, but ctx->netdev became NULL, and the offload was
torn down without a proper fallback, so a bug was present, but a
different kind of bug.

Due to misunderstanding of the issue, the original patch dropped the
refcount_dec_and_test line for the context to avoid the alleged
premature deallocation. That line has to be restored, because it matches
the refcount_inc_not_zero from the same function, otherwise the contexts
that survived tls_device_down are leaked.

This patch fixes the described issue by restoring refcount_dec_and_test.
After this change, there is no leak anymore, and the fallback to
software kTLS still works.

Fixes: c55dcdd4 ("net/tls: Fix use-after-free after the TLS device goes down and up")
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://lore.kernel.org/r/20220512091830.678684-1-maximmi@nvidia.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

In the NIC ->probe() callback, ->mtd_probe() callback is called.
If NIC has 2 ports, ->probe() is called twice and ->mtd_probe() too.
In the ->mtd_probe(), which is efx_ef10_mtd_probe() it allocates and
initializes mtd partiion.
But mtd partition for sfc is shared data.
So that allocated mtd partition data from last called
efx_ef10_mtd_probe() will not be used.
Therefore it must be freed.
But it doesn't free a not used mtd partition data in efx_ef10_mtd_probe().

kmemleak reports:
unreferenced object 0xffff88811ddb0000 (size 63168):
  comm "systemd-udevd", pid 265, jiffies 4294681048 (age 348.586s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffffa3767749>] kmalloc_order_trace+0x19/0x120
    [<ffffffffa3873f0e>] __kmalloc+0x20e/0x250
    [<ffffffffc041389f>] efx_ef10_mtd_probe+0x11f/0x270 [sfc]
    [<ffffffffc0484c8a>] efx_pci_probe.cold.17+0x3df/0x53d [sfc]
    [<ffffffffa414192c>] local_pci_probe+0xdc/0x170
    [<ffffffffa4145df5>] pci_device_probe+0x235/0x680
    [<ffffffffa443dd52>] really_probe+0x1c2/0x8f0
    [<ffffffffa443e72b>] __driver_probe_device+0x2ab/0x460
    [<ffffffffa443e92a>] driver_probe_device+0x4a/0x120
    [<ffffffffa443f2ae>] __driver_attach+0x16e/0x320
    [<ffffffffa4437a90>] bus_for_each_dev+0x110/0x190
    [<ffffffffa443b75e>] bus_add_driver+0x39e/0x560
    [<ffffffffa4440b1e>] driver_register+0x18e/0x310
    [<ffffffffc02e2055>] 0xffffffffc02e2055
    [<ffffffffa3001af3>] do_one_initcall+0xc3/0x450
    [<ffffffffa33ca574>] do_init_module+0x1b4/0x700
Acked-by: Martin Habets <habetsm.xilinx@gmail.com>
Fixes: 8127d661 ("sfc: Add support for Solarflare SFC9100 family")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Link: https://lore.kernel.org/r/20220512054709.12513-1-ap420073@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Non blocking sendmsg will return -EAGAIN when any signal pending
and no send space left, while non blocking recvmsg return -EINTR
when signal pending and no data received. This may makes confused.
As TCP returns -EAGAIN in the conditions described above. Align the
behavior of smc with TCP.

Fixes: 846e344e ("net/smc: add receive timeout check")
Signed-off-by: Guangguan Wang <guangguan.wang@linux.alibaba.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Acked-by: Karsten Graul <kgraul@linux.ibm.com>
Link: https://lore.kernel.org/r/20220512030820.73848-1-guangguan.wang@linux.alibaba.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

After commit 2d1f90f9 ("net: dsa/bcm_sf2: fix incorrect usage of
state->link") the interface suspend path would call our mac_link_down()
call back which would forcibly set the link down, thus preventing
Wake-on-LAN packets from reaching our management port.

Fix this by looking at whether the port is enabled for Wake-on-LAN and
not clearing the link status in that case to let packets go through.

Fixes: 2d1f90f9 ("net: dsa/bcm_sf2: fix incorrect usage of state->link")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220512021731.2494261-1-f.fainelli@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

IPv6 addresses which are used for tunnels are stored in a hash table
with reference counting. When a new GRE tunnel is configured, the driver
is notified and configures it in hardware.

Currently, any change in the tunnel is not applied in the driver. It
means that if the remote address is changed, the driver is not aware of
this change and the first address will be used.

This behavior results in a warning [1] in scenarios such as the
following:

 # ip link add name gre1 type ip6gre local 2000::3 remote 2000::fffe tos inherit ttl inherit
 # ip link set name gre1 type ip6gre local 2000::3 remote 2000::ffff ttl inherit
 # ip link delete gre1

The change of the address is not applied in the driver. Currently, the
driver uses the remote address which is stored in the 'parms' of the
overlay device. When the tunnel is removed, the new IPv6 address is
used, the driver tries to release it, but as it is not aware of the
change, this address is not configured and it warns about releasing non
existing IPv6 address.

Fix it by using the IPv6 address which is cached in the IPIP entry, this
address is the last one that the driver used, so even in cases such the
above, the first address will be released, without any warning.

[1]:

WARNING: CPU: 1 PID: 2197 at drivers/net/ethernet/mellanox/mlxsw/spectrum.c:2920 mlxsw_sp_ipv6_addr_put+0x146/0x220 [mlxsw_spectrum]
...
CPU: 1 PID: 2197 Comm: ip Not tainted 5.17.0-rc8-custom-95062-gc1e5ded51a9a #84
Hardware name: Mellanox Technologies Ltd. MSN4700/VMOD0010, BIOS 5.11 07/12/2021
RIP: 0010:mlxsw_sp_ipv6_addr_put+0x146/0x220 [mlxsw_spectrum]
...
Call Trace:
 <TASK>
 mlxsw_sp2_ipip_rem_addr_unset_gre6+0xf1/0x120 [mlxsw_spectrum]
 mlxsw_sp_netdevice_ipip_ol_event+0xdb/0x640 [mlxsw_spectrum]
 mlxsw_sp_netdevice_event+0xc4/0x850 [mlxsw_spectrum]
 raw_notifier_call_chain+0x3c/0x50
 call_netdevice_notifiers_info+0x2f/0x80
 unregister_netdevice_many+0x311/0x6d0
 rtnl_dellink+0x136/0x360
 rtnetlink_rcv_msg+0x12f/0x380
 netlink_rcv_skb+0x49/0xf0
 netlink_unicast+0x233/0x340
 netlink_sendmsg+0x202/0x440
 ____sys_sendmsg+0x1f3/0x220
 ___sys_sendmsg+0x70/0xb0
 __sys_sendmsg+0x54/0xa0
 do_syscall_64+0x35/0x80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Fixes: e846efe2 ("mlxsw: spectrum: Add hash table for IPv6 address mapping")
Reported-by: Maksym Yaremchuk <maksymy@nvidia.com>
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Link: https://lore.kernel.org/r/20220511115747.238602-1-idosch@nvidia.comSigned-off-by: Paolo Abeni <pabeni@redhat.com>

The interrupt controller supplying the Wake-on-LAN interrupt line maybe
modular on some platforms (irq-bcm7038-l1.c) and might be probed at a
later time than the GENET driver. We need to specifically check for
-EPROBE_DEFER and propagate that error to ensure that we eventually
fetch the interrupt descriptor.

Fixes: 9deb48b5 ("bcmgenet: add WOL IRQ check")
Fixes: 5b1f0e62 ("net: bcmgenet: Avoid touching non-existent interrupt")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/20220511031752.2245566-1-f.fainelli@gmail.comSigned-off-by: Paolo Abeni <pabeni@redhat.com>

'foe_table' is a pointer, the real size of struct mtk_foe_entry
should be pass to memset().

Fixes: ba37b7ca ("net: ethernet: mtk_eth_soc: add support for initializing the PPE")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Acked-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20220511030829.3308094-1-yangyingliang@huawei.comSigned-off-by: Paolo Abeni <pabeni@redhat.com>

Luiz Augusto von Dentz says:

====================
bluetooth pull request for net:

 - Fix the creation of hdev->name when index is greater than 9999

* tag 'for-net-2022-05-11' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth:
  Bluetooth: Fix the creation of hdev->name
====================

Link: https://lore.kernel.org/r/20220512002901.823647-1-luiz.dentz@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Kalle Valo says:

====================
wireless fixes for v5.18

Second set of fixes for v5.18 and hopefully the last one. We have a
new iwlwifi maintainer, a fix to rfkill ioctl interface and important
fixes to both stack and two drivers.

* tag 'wireless-2022-05-11' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless:
  rfkill: uapi: fix RFKILL_IOCTL_MAX_SIZE ioctl request definition
  nl80211: fix locking in nl80211_set_tx_bitrate_mask()
  mac80211_hwsim: call ieee80211_tx_prepare_skb under RCU protection
  mac80211_hwsim: fix RCU protected chanctx access
  mailmap: update Kalle Valo's email
  mac80211: Reset MBSSID parameters upon connection
  cfg80211: retrieve S1G operating channel number
  nl80211: validate S1G channel width
  mac80211: fix rx reordering with non explicit / psmp ack policy
  ath11k: reduce the wait time of 11d scan and hw scan while add interface
  MAINTAINERS: update iwlwifi driver maintainer
  iwlwifi: iwl-dbg: Use del_timer_sync() before freeing
====================

Link: https://lore.kernel.org/r/20220511154535.A1A12C340EE@smtp.kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Set a size limit of 8 bytes of the written buffer to "hdev->name"
including the terminating null byte, as the size of "hdev->name" is 8
bytes. If an id value which is greater than 9999 is allocated,
then the "snprintf(hdev->name, sizeof(hdev->name), "hci%d", id)"
function call would lead to a truncation of the id value in decimal
notation.

Set an explicit maximum id parameter in the id allocation function call.
The id allocation function defines the maximum allocated id value as the
maximum id parameter value minus one. Therefore, HCI_MAX_ID is defined
as 10000.
Signed-off-by: Itay Iellin <ieitayie@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

The bug is here:
	ret = i40e_add_macvlan_filter(hw, ch->seid, vdev->dev_addr, &aq_err);

The list iterator 'ch' will point to a bogus position containing
HEAD if the list is empty or no element is found. This case must
be checked before any use of the iterator, otherwise it will
lead to a invalid memory access.

To fix this bug, use a new variable 'iter' as the list iterator,
while use the origin variable 'ch' as a dedicated pointer to
point to the found element.

Cc: stable@vger.kernel.org
Fixes: 1d8d80b4 ("i40e: Add macvlan support on i40e")
Signed-off-by: Xiaomeng Tong <xiam0nd.tong@gmail.com>
Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://lore.kernel.org/r/20220510204846.2166999-1-anthony.l.nguyen@intel.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Currently pedit tries to ensure that the accessed skb offset
is writable via skb_unclone(). The action potentially allows
touching any skb bytes, so it may end-up modifying shared data.

The above causes some sporadic MPTCP self-test failures, due to
this code:

	tc -n $ns2 filter add dev ns2eth$i egress \
		protocol ip prio 1000 \
		handle 42 fw \
		action pedit munge offset 148 u8 invert \
		pipe csum tcp \
		index 100

The above modifies a data byte outside the skb head and the skb is
a cloned one, carrying a TCP output packet.

This change addresses the issue by keeping track of a rough
over-estimate highest skb offset accessed by the action and ensuring
such offset is really writable.

Note that this may cause performance regressions in some scenarios,
but hopefully pedit is not in the critical path.

Fixes: db2c2417 ("act_pedit: access skb->data safely")
Acked-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Tested-by: Geliang Tang <geliang.tang@suse.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Link: https://lore.kernel.org/r/1fcf78e6679d0a287dd61bb0f04730ce33b3255d.1652194627.git.pabeni@redhat.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Alexandra Winter says:

====================
s390/net: Cleanup some code checker findings

clean up smatch findings in legacy code. I was not able to provoke
any real failures on my systems, but other hardware reactions,
timing conditions or compiler output, may cause failures.

There are still 2 smatch warnings left in s390/net:

drivers/s390/net/ctcm_main.c:1326 add_channel() warn: missing error code 'rc'
This one is a false positive.

drivers/s390/net/netiucv.c:1355 netiucv_check_user() warn: argument 3 to %02x specifier has type 'char'
Postponing this one, need to better understand string handling in iucv.

There are several sparse warnings left in ctcm, like:
drivers/s390/net/ctcm_fsms.c:573:9: warning: context imbalance in 'ctcm_chx_setmode' - different lock contexts for basic block
Those are mentioned in the source, no plan to rework.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

smatch complains about
drivers/s390/net/lcs.c:1741 lcs_get_control() warn: variable dereferenced before check 'card->dev' (see line 1739)

Fixes: 27eb5ac8 ("[PATCH] s390: lcs driver bug fixes and improvements [1/2]")
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

smatch complains about
drivers/s390/net/ctcm_mpc.c:1210 ctcmpc_unpack_skb() warn: possible memory leak of 'mpcginfo'

mpc_action_discontact() did not free mpcginfo. Consolidate the freeing in
ctcmpc_unpack_skb().

Fixes: 293d984f ("ctcm: infrastructure for replaced ctc driver")
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Found by cppcheck and smatch.
smatch complains about
drivers/s390/net/ctcm_sysfs.c:43 ctcm_buffer_write() warn: variable dereferenced before check 'priv' (see line 42)

Fixes: 3c09e264 ("ctcm: rename READ/WRITE defines to avoid redefinitions")
Reported-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Grant Grundler says:

====================
net: atlantic: more fuzzing fixes

It essentially describes four problems:
1) validate rxd_wb->next_desc_ptr before populating buff->next
2) "frag[0] not initialized" case in aq_ring_rx_clean()
3) limit iterations handling fragments in aq_ring_rx_clean()
4) validate hw_head_ in hw_atl_b0_hw_ring_tx_head_update()

(1) was fixed by Zekun Shen <bruceshenzk@gmail.com> around the same time with
"atlantic: Fix buff_ring OOB in aq_ring_rx_clean" (SHA1 5f501532).

I've added one "clean up" contribution:
    "net: atlantic: reduce scope of is_rsc_complete"

I tested the "original" patches using chromeos-v5.4 kernel branch:
    https://chromium-review.googlesource.com/q/hashtag:pcinet-atlantic-2022q1+(status:open%20OR%20status:merged)

I've forward ported those patches to 5.18-rc2 and compiled them but am
unable to test them on 5.18-rc2 kernel (logistics problems).

Credit largely goes to ChromeOS Fuzzing team members:
    Aashay Shringarpure, Yi Chou, Shervin Oloumi

V2 changes:
o drop first patch - was already fixed upstream differently
o reduce (4) "validate hw_head_" to simple bounds checking.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Bounds check hw_head index provided by NIC to verify it lies
within the TX buffer ring.
Reported-by: Aashay Shringarpure <aashay@google.com>
Reported-by: Yi Chou <yich@google.com>
Reported-by: Shervin Oloumi <enlightened@google.com>
Signed-off-by: Grant Grundler <grundler@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Enforce that the CPU can not get stuck in an infinite loop.
Reported-by: Aashay Shringarpure <aashay@google.com>
Reported-by: Yi Chou <yich@google.com>
Reported-by: Shervin Oloumi <enlightened@google.com>
Signed-off-by: Grant Grundler <grundler@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Don't defer handling the err case outside the loop. That's pointless.

And since is_rsc_complete is only used inside this loop, declare
it inside the loop to reduce it's scope.
Signed-off-by: Grant Grundler <grundler@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

In aq_ring_rx_clean(), if buff->is_eop is not set AND
buff->len < AQ_CFG_RX_HDR_SIZE, then hdr_len remains equal to
buff->len and skb_add_rx_frag(xxx, *0*, ...) is not called.

The loop following this code starts calling skb_add_rx_frag() starting
with i=1 and thus frag[0] is never initialized. Since i is initialized
to zero at the top of the primary loop, we can just reference and
post-increment i instead of hardcoding the 0 when calling
skb_add_rx_frag() the first time.
Reported-by: Aashay Shringarpure <aashay@google.com>
Reported-by: Yi Chou <yich@google.com>
Reported-by: Shervin Oloumi <enlightened@google.com>
Signed-off-by: Grant Grundler <grundler@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Switch to using pcim_enable_device() to avoid missing pci_disable_device().
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220510031316.1780409-1-yangyingliang@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

In lanphy_read_page_reg, calling __phy_read() might return a negative
error code. Use 'int' to check the error code.

Fixes: 7c2dcfa2 ("net: phy: micrel: Add support for LAN8804 PHY")
Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20220509144519.2343399-1-wanjiabing@vivo.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Pull virtio fix from Michael Tsirkin:
 "A last minute fixup of the transitional ID numbers.

  Important to get these right - if users start to depend on the wrong
  ones they are very hard to fix"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio: fix virtio transitional ids

udf_write_fi() uses lengthOfImpUse of the entry it is writing to.
However this field has not yet been initialized so it either contains
completely bogus value or value from last directory entry at that place.
In either case this is wrong and can lead to filesystem corruption or
kernel crashes.
Reported-by: butt3rflyh4ck <butterflyhuangxx@gmail.com>
CC: stable@vger.kernel.org
Fixes: 979a6e28 ("udf: Get rid of 0-length arrays in struct fileIdentDesc")
Signed-off-by: Jan Kara <jack@suse.cz>