When we tear down a network namespace, we unregister all
the netdevices within it. So we may queue a slave device
and a bonding device together in the same unregister queue.

If the only slave device is non-ethernet, it would
automatically unregister the bonding device as well. Thus,
we may end up unregistering the bonding device twice.

Workaround this special case by checking reg_state.

Fixes: 9b5e383c ("net: Introduce unregister_netdevice_many()")
Reported-by: syzbot+af23e7f3e0a7e10c8b67@syzkaller.appspotmail.com
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Cc: Jay Vosburgh <j.vosburgh@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

This variable is present in many source files and has not been used
anywhere (at least internally) since it was introduced.

Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/cfm.c: In function ‘cfm’:
 drivers/net/fddi/skfp/cfm.c:211:6: warning: variable ‘oldstate’ set but not used [-Wunused-but-set-variable]
 drivers/net/fddi/skfp/cfm.c:40:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

While we're at it, remove some code which has never been invoked.

Keep the comment though, as it seems potentially half useful.

Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/cfm.c: In function ‘cfm’:
 drivers/net/fddi/skfp/cfm.c:211:6: warning: variable ‘oldstate’ set but not used [-Wunused-but-set-variable]

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

This variable is present in many source files and has not been used
anywhere (at least internally) since it was introduced.

Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/smt.c:24:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

The variable 'smt_pdef' is only used if LITTLE_ENDIAN is set, so only
define it if this is the case.

Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/smt.c:1572:3: warning: ‘smt_pdef’ defined but not used [-Wunused-const-variable=]

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

This variable is present in many source files and has not been used
anywhere (at least internally) since it was introduced.

Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/fplustm.c:25:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

This variable is present in many source files and has not been used
anywhere (at least internally) since it was introduced.

Fixes the following W=1 kernel build warning(s):

 drivers/net/fddi/skfp/hwmtm.c:14:19: warning: ‘ID_sccs’ defined but not used [-Wunused-const-variable=]

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Fixes the following W=1 kernel build warning(s):

 drivers/net/wan/dlci.c: In function ‘dlci_close’:
 drivers/net/wan/dlci.c:298:8: warning: variable ‘err’ set but not used [-Wunused-but-set-variable]

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Mike McLagan <mike.mclagan@linux.org>
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Fixes the following W=1 kernel build warning(s):

 drivers/net/ethernet/8390/axnet_cs.c:907: warning: Function parameter or member 'txqueue' not described in 'axnet_tx_timeout'

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Martin Habets <mhabets@solarflare.com>
Cc: Shannon Nelson <snelson@pensando.io>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: William Lee <william@asix.com.tw>
Cc: "A. Hinds --" <dahinds@users.sourceforge.net>
Cc: reached at <becker@scyld.com>
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Fixes the following W=1 kernel build warning(s):

 drivers/net/bonding/bond_alb.c:1222: warning: Function parameter or member 'bond' not described in 'alb_set_mac_address'

Cc: Jay Vosburgh <j.vosburgh@gmail.com>
Cc: Veaceslav Falico <vfalico@gmail.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Fixes the following W=1 kernel build warning(s):

 drivers/net/ethernet/3com/3c574_cs.c: In function ‘update_stats’:
 drivers/net/ethernet/3com/3c574_cs.c:954:9: warning: variable ‘tx’ set but not used [-Wunused-but-set-variable]
 954 | u8 rx, tx, up;
 | ^~
 drivers/net/ethernet/3com/3c574_cs.c:954:5: warning: variable ‘rx’ set but not used [-Wunused-but-set-variable]
 954 | u8 rx, tx, up;
 | ^~

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Shannon Nelson <snelson@pensando.io>
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Martin Habets <mhabets@solarflare.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Donald Becker <becker@scyld.com>
Cc: David Hinds <dahinds@users.sourceforge.net>
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Fixes the following W=1 kernel build warning(s):

 drivers/net/bonding/bond_main.c:329: warning: Function parameter or member 'proto' not described in 'bond_vlan_rx_add_vid'
 drivers/net/bonding/bond_main.c:362: warning: Function parameter or member 'proto' not described in 'bond_vlan_rx_kill_vid'
 drivers/net/bonding/bond_main.c:964: warning: Function parameter or member 'new_active' not described in 'bond_change_active_slave'
 drivers/net/bonding/bond_main.c:964: warning: Excess function parameter 'new' description in 'bond_change_active_slave'

Cc: Jay Vosburgh <j.vosburgh@gmail.com>
Cc: Veaceslav Falico <vfalico@gmail.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Thomas Davis <tadavis@lbl.gov>
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Renames and missing descriptions.

Fixes the following W=1 kernel build warning(s):

 drivers/net/bonding/bond_3ad.c:140: warning: Function parameter or member 'port' not described in '__get_first_agg'
 drivers/net/bonding/bond_3ad.c:140: warning: Excess function parameter 'bond' description in '__get_first_agg'
 drivers/net/bonding/bond_3ad.c:1655: warning: Function parameter or member 'agg' not described in 'ad_agg_selection_logic'
 drivers/net/bonding/bond_3ad.c:1655: warning: Excess function parameter 'aggregator' description in 'ad_agg_selection_logic'
 drivers/net/bonding/bond_3ad.c:1817: warning: Function parameter or member 'port' not described in 'ad_initialize_port'
 drivers/net/bonding/bond_3ad.c:1817: warning: Excess function parameter 'aggregator' description in 'ad_initialize_port'
 drivers/net/bonding/bond_3ad.c:1976: warning: Function parameter or member 'timeout' not described in 'bond_3ad_initiate_agg_selection'
 drivers/net/bonding/bond_3ad.c:2274: warning: Function parameter or member 'work' not described in 'bond_3ad_state_machine_handler'
 drivers/net/bonding/bond_3ad.c:2274: warning: Excess function parameter 'bond' description in 'bond_3ad_state_machine_handler'
 drivers/net/bonding/bond_3ad.c:2508: warning: Function parameter or member 'link' not described in 'bond_3ad_handle_link_change'
 drivers/net/bonding/bond_3ad.c:2508: warning: Excess function parameter 'status' description in 'bond_3ad_handle_link_change'
 drivers/net/bonding/bond_3ad.c:2566: warning: Function parameter or member 'bond' not described in 'bond_3ad_set_carrier'
 drivers/net/bonding/bond_3ad.c:2677: warning: Function parameter or member 'bond' not described in 'bond_3ad_update_lacp_rate'
 drivers/net/bonding/bond_3ad.c:1655: warning: Function parameter or member 'agg' not described in 'ad_agg_selection_logic'
 drivers/net/bonding/bond_3ad.c:1655: warning: Excess function parameter 'aggregator' description in 'ad_agg_selection_logic'
 drivers/net/bonding/bond_3ad.c:1817: warning: Function parameter or member 'port' not described in 'ad_initialize_port'
 drivers/net/bonding/bond_3ad.c:1817: warning: Excess function parameter 'aggregator' description in 'ad_initialize_port'
 drivers/net/bonding/bond_3ad.c:1976: warning: Function parameter or member 'timeout' not described in 'bond_3ad_initiate_agg_selection'
 drivers/net/bonding/bond_3ad.c:2274: warning: Function parameter or member 'work' not described in 'bond_3ad_state_machine_handler'
 drivers/net/bonding/bond_3ad.c:2274: warning: Excess function parameter 'bond' description in 'bond_3ad_state_machine_handler'
 drivers/net/bonding/bond_3ad.c:2508: warning: Function parameter or member 'link' not described in 'bond_3ad_handle_link_change'
 drivers/net/bonding/bond_3ad.c:2508: warning: Excess function parameter 'status' description in 'bond_3ad_handle_link_change'
 drivers/net/bonding/bond_3ad.c:2566: warning: Function parameter or member 'bond' not described in 'bond_3ad_set_carrier'
 drivers/net/bonding/bond_3ad.c:2677: warning: Function parameter or member 'bond' not described in 'bond_3ad_update_lacp_rate'

Cc: Jay Vosburgh <j.vosburgh@gmail.com>
Cc: Veaceslav Falico <vfalico@gmail.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1. Added a skb->len check

This driver expects upper layers to include a pseudo header of 1 byte
when passing down a skb for transmission. This driver will read this
1-byte header. This patch added a skb->len check before reading the
header to make sure the header exists.

2. Added needed_headroom and set hard_header_len to 0

When this driver transmits data,
  first this driver will remove a pseudo header of 1 byte,
  then the lapb module will prepend the LAPB header of 2 or 3 bytes.
So the value of needed_headroom in this driver should be 3 - 1.

Because this driver has no header_ops, according to the logic of
af_packet.c, the value of hard_header_len should be 0.

Reason of setting needed_headroom and hard_header_len at this place:

This driver is written using the API of the hdlc module, the hdlc
module enables this driver (the protocol driver) to run on any hardware
that has a driver (the hardware driver) written using the API of the
hdlc module.

Two other hdlc protocol drivers - hdlc_ppp and hdlc_raw_eth, also set
things like hard_header_len at this place. In hdlc_ppp, it sets
hard_header_len after attach_hdlc_protocol and before setting dev->type.
In hdlc_raw_eth, it sets hard_header_len by calling ether_setup after
attach_hdlc_protocol and after memcpy the settings.

3. Reset needed_headroom when detaching protocols (in hdlc.c)

When detaching a protocol from a hardware device, the hdlc module will
reset various parameters of the device (including hard_header_len) to
the default values. We add needed_headroom here so that needed_headroom
will also be reset.

Cc: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Cc: Martin Schiller <ms@dev.tdt.de>
Cc: Andrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: Xie He <xie.he.0141@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Broadcast mode bonds transmit a copy of all traffic simultaneously out of
all interfaces, so the "speed" of the bond isn't really the aggregate of
all interfaces, but rather, the speed of the slowest active interface.

Also, the type of the speed field is u32, not unsigned long, so adjust
that accordingly, as required to make min() function here without
complaining about mismatching types.

Fixes: bb5b052f ("bond: add support to read speed and duplex via ethtool")
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Veaceslav Falico <vfalico@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: "David S. Miller" <davem@davemloft.net>
CC: netdev@vger.kernel.org
Acked-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Daniel Borkmann says:

====================
pull-request: bpf 2020-08-15

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

We've added 23 non-merge commits during the last 4 day(s) which contain
a total of 32 files changed, 421 insertions(+), 141 deletions(-).

The main changes are:

1) Fix sock_ops ctx access splat due to register override, from John Fastabend.

2) Batch of various fixes to libbpf, bpftool, and selftests when testing build
   in 32-bit mode, from Andrii Nakryiko.

3) Fix vmlinux.h generation on ARM by mapping GCC built-in types (__Poly*_t)
   to equivalent ones clang can work with, from Jean-Philippe Brucker.

4) Fix build_id lookup in bpf_get_stackid() helper by walking all NOTE ELF
   sections instead of just first, from Jiri Olsa.

5) Avoid use of __builtin_offsetof() in libbpf for CO-RE, from Yonghong Song.

6) Fix segfault in test_mmap due to inconsistent length params, from Jianlin Lv.

7) Don't override errno in libbpf when logging errors, from Toke Høiland-Jørgensen.

8) Fix v4_to_v6 sockaddr conversion in sk_lookup test, from Stanislav Fomichev.

9) Add link to bpf-helpers(7) man page to BPF doc, from Joe Stringer.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Correct the error path for regulator disable.

Fixes: 9269e556 ("net: fec: add phy-reset-gpios PROBE_DEFER check")
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Removed obsolete resources from bonding.rst doc:
   - bonding-devel@lists.sourceforge.net hasn't been used since 2008
   - admin interface is 404
   - Donald Becker's domain/content no longer online
Signed-off-by: Nivedita Singhvi <nivedita.singhvi@canonical.com>
Acked-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2020-08-14

This series contains updates to i40e and igc drivers.

Vinicius fixes an issue with PTP spinlock being accessed before
initialization.

Przemyslaw fixes an issue with trusted VFs seeing additional traffic.

Grzegorz adds a wait for pending resets on driver removal to prevent
null pointer dereference.

v2: Fix function parameter for hw/aq in patch 2. Fix fixes tag in patch 3.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Fix the reason of crashing system by add waiting time to finish reset
recovery process before starting remove driver procedure.
Now VSI is releasing if VSI is not in reset recovery mode.
Without this fix it was possible to start remove driver if other
processing command need reset recovery procedure which resulted in
null pointer dereference. VSI used by the ethtool process has been
cleared by remove driver process.

[ 6731.508665] BUG: kernel NULL pointer dereference, address: 0000000000000000
[ 6731.508668] #PF: supervisor read access in kernel mode
[ 6731.508670] #PF: error_code(0x0000) - not-present page
[ 6731.508671] PGD 0 P4D 0
[ 6731.508674] Oops: 0000 [#1] SMP PTI
[ 6731.508679] Hardware name: Intel Corporation S2600WT2R/S2600WT2R, BIOS SE5C610.86B.01.01.0021.032120170601 03/21/2017
[ 6731.508694] RIP: 0010:i40e_down+0x252/0x310 [i40e]
[ 6731.508696] Code: c7 78 de fa c0 e8 61 02 3a c1 66 83 bb f6 0c 00 00 00 0f 84 bf 00 00 00 45 31 e4 45 31 ff eb 03 41 89 c7 48 8b 83 98 0c 00 00 <4a> 8b 3c 20 e8 a5 79 02 00 48 83 bb d0 0c 00 00 00 74 10 48 8b 83
[ 6731.508698] RSP: 0018:ffffb75ac7b3faf0 EFLAGS: 00010246
[ 6731.508700] RAX: 0000000000000000 RBX: ffff9c9874bd5000 RCX: 0000000000000007
[ 6731.508701] RDX: 0000000000000000 RSI: 0000000000000096 RDI: ffff9c987f4d9780
[ 6731.508703] RBP: ffffb75ac7b3fb30 R08: 0000000000005b60 R09: 0000000000000004
[ 6731.508704] R10: ffffb75ac64fbd90 R11: 0000000000000001 R12: 0000000000000000
[ 6731.508706] R13: ffff9c97a08e0000 R14: ffff9c97a08e0a68 R15: 0000000000000000
[ 6731.508708] FS:  00007f2617cd2740(0000) GS:ffff9c987f4c0000(0000) knlGS:0000000000000000
[ 6731.508710] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6731.508711] CR2: 0000000000000000 CR3: 0000001e765c4006 CR4: 00000000003606e0
[ 6731.508713] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6731.508714] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6731.508715] Call Trace:
[ 6731.508734]  i40e_vsi_close+0x84/0x90 [i40e]
[ 6731.508742]  i40e_quiesce_vsi.part.98+0x3c/0x40 [i40e]
[ 6731.508749]  i40e_pf_quiesce_all_vsi+0x55/0x60 [i40e]
[ 6731.508757]  i40e_prep_for_reset+0x59/0x130 [i40e]
[ 6731.508765]  i40e_reconfig_rss_queues+0x5a/0x120 [i40e]
[ 6731.508774]  i40e_set_channels+0xda/0x170 [i40e]
[ 6731.508778]  ethtool_set_channels+0xe9/0x150
[ 6731.508781]  dev_ethtool+0x1b94/0x2920
[ 6731.508805]  dev_ioctl+0xc2/0x590
[ 6731.508811]  sock_do_ioctl+0xae/0x150
[ 6731.508813]  sock_ioctl+0x34f/0x3c0
[ 6731.508821]  ksys_ioctl+0x98/0xb0
[ 6731.508828]  __x64_sys_ioctl+0x1a/0x20
[ 6731.508831]  do_syscall_64+0x57/0x1c0
[ 6731.508835]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fixes: 4b816446 ("i40e: Add common function for finding VSI by type")
Signed-off-by: Grzegorz Szczurek <grzegorzx.szczurek@intel.com>
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Trusted VF with unicast promiscuous mode set, could listen to TX
traffic of other VFs.
Set unicast promiscuous mode to RX traffic, if VSI has port VLAN
configured. Rename misleading I40E_AQC_SET_VSI_PROMISC_TX bit to
I40E_AQC_SET_VSI_PROMISC_RX_ONLY. Aligned unicast promiscuous with
VLAN to the one without VLAN.

Fixes: 6c41a760 ("i40e: Add promiscuous on VLAN support")
Fixes: 3b120089 ("i40e: When in promisc mode apply promisc mode to Tx Traffic as well")
Signed-off-by: Przemyslaw Patynowski <przemyslawx.patynowski@intel.com>
Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Once we've copied data from the iterator we need to revert in case we
end up not sending any data.

This bug doesn't trigger with normal 'poll' based tests, because
we only feed a small chunk of data to kernel after poll indicated
POLLOUT.  With blocking IO and large writes this triggers. Receiver
ends up with less data than it should get.

Fixes: 72511aab ("mptcp: avoid blocking in tcp_sendpages")
Signed-off-by: Florian Westphal <fw@strlen.de>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

On EF100, the RX hash field in the packet prefix may not be valid (e.g.
 if the header parse failed), and this is indicated by a one-bit flag
 elsewhere in the packet prefix.  Only call skb_set_hash() if the
 RSS_HASH_VALID bit is set.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge tag 'linux-can-fixes-for-5.9-20200814' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2020-08-14

this is a pull request of 6 patches for net/master. All patches fix problems in
the j1939 CAN networking stack.

The first patch is by Eric Dumazet fixes a kernel-infoleak in
j1939_sk_sock2sockaddr_can().

The remaining 5 patches are by Oleksij Rempel and fix recption of j1939
messages not orginated by the stack, a use-after-free in j1939_tp_txtimer(),
ensure that the CAN driver has a ml_priv allocated. These problem were found by
google's syzbot. Further ETP sessions with block size of less than 255 are
fixed and a sanity check was added to j1939_xtp_rx_dat_one() to detect packet
corruption.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

Pull powerpc fix from Michael Ellerman:
 "One fix for a boot crash on some platforms introduced by the recent
  pkey refactoring.

  Thanks to Christian Zigotzky and Aneesh Kumar K.V"

* tag 'powerpc-5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/pkeys: Fix boot failures with Nemo board (A-EON AmigaOne X1000)

Pull more xen updates from Juergen Gross:

 - Remove support for running as 32-bit Xen PV-guest.

   32-bit PV guests are rarely used, are lacking security fixes for
   Meltdown, and can be easily replaced by PVH mode. Another series for
   doing more cleanup will follow soon (removal of 32-bit-only pvops
   functionality).

 - Fixes and additional features for the Xen display frontend driver.

* tag 'for-linus-5.9-rc1b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  drm/xen-front: Pass dumb buffer data offset to the backend
  xen: Sync up with the canonical protocol definition in Xen
  drm/xen-front: Add YUYV to supported formats
  drm/xen-front: Fix misused IS_ERR_OR_NULL checks
  xen/gntdev: Fix dmabuf import with non-zero sgt offset
  x86/xen: drop tests for highmem in pv code
  x86/xen: eliminate xen-asm_64.S
  x86/xen: remove 32-bit Xen PV guest support

Pull hyper-v fixes from Wei Liu:

 - fix oops reporting on Hyper-V

 - make objtool happy

* tag 'hyperv-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
  x86/hyperv: Make hv_setup_sched_clock inline
  Drivers: hv: vmbus: Only notify Hyper-V for die events that are oops

syzbot found its way in 86_fsgsbase_read_task() and triggered this oops:

   KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
   CPU: 0 PID: 6866 Comm: syz-executor262 Not tainted 5.8.0-syzkaller #0
   RIP: 0010:x86_fsgsbase_read_task+0x16d/0x310 arch/x86/kernel/process_64.c:393
   Call Trace:
     putreg32+0x3ab/0x530 arch/x86/kernel/ptrace.c:876
     genregs32_set arch/x86/kernel/ptrace.c:1026 [inline]
     genregs32_set+0xa4/0x100 arch/x86/kernel/ptrace.c:1006
     copy_regset_from_user include/linux/regset.h:326 [inline]
     ia32_arch_ptrace arch/x86/kernel/ptrace.c:1061 [inline]
     compat_arch_ptrace+0x36c/0xd90 arch/x86/kernel/ptrace.c:1198
     __do_compat_sys_ptrace kernel/ptrace.c:1420 [inline]
     __se_compat_sys_ptrace kernel/ptrace.c:1389 [inline]
     __ia32_compat_sys_ptrace+0x220/0x2f0 kernel/ptrace.c:1389
     do_syscall_32_irqs_on arch/x86/entry/common.c:84 [inline]
     __do_fast_syscall_32+0x57/0x80 arch/x86/entry/common.c:126
     do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:149
     entry_SYSENTER_compat_after_hwframe+0x4d/0x5c

This can happen if ptrace() or sigreturn() pokes an LDT selector into FS
or GS for a task with no LDT and something tries to read the base before
a return to usermode notices the bad selector and fixes it.

The fix is to make sure ldt pointer is not NULL.

Fixes: 07e1d88a ("x86/fsgsbase/64: Fix ptrace() to read the FS/GS base accurately")
Co-developed-by: Jann Horn <jannh@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: Chang S. Bae <chang.seok.bae@intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Markus T Metzger <markus.t.metzger@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Shankar <ravi.v.shankar@intel.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Pull crypto fix from Herbert Xu:
 "This fixes a regression in af_alg"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: algif_aead - fix uninitialized ctx->init

Pull module updates from Jessica Yu:
 "The most important change would be Christoph Hellwig's patch
  implementing proprietary taint inheritance, in an effort to discourage
  the creation of GPL "shim" modules that interface between GPL symbols
  and proprietary symbols.

  Summary:

   - Have modules that use symbols from proprietary modules inherit the
     TAINT_PROPRIETARY_MODULE taint, in an effort to prevent GPL shim
     modules that are used to circumvent _GPL exports. These are modules
     that claim to be GPL licensed while also using symbols from
     proprietary modules. Such modules will be rejected while non-GPL
     modules will inherit the proprietary taint.

   - Module export space cleanup. Unexport symbols that are unused
     outside of module.c or otherwise used in only built-in code"

* tag 'modules-for-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  modules: inherit TAINT_PROPRIETARY_MODULE
  modules: return licensing information from find_symbol
  modules: rename the licence field in struct symsearch to license
  modules: unexport __module_address
  modules: unexport __module_text_address
  modules: mark each_symbol_section static
  modules: mark find_symbol static
  modules: mark ref_module static
  modules: linux/moduleparam.h: drop duplicated word in a comment

Pull Kconfig updates from Masahiro Yamada:

 - remove '---help---' keyword support

 - fix mouse events for 'menuconfig' symbols in search view of qconf

 - code cleanups of qconf

* tag 'kconfig-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (24 commits)
  kconfig: qconf: move setOptionMode() to ConfigList from ConfigView
  kconfig: qconf: do not limit the pop-up menu to the first row
  kconfig: qconf: refactor icon setups
  kconfig: qconf: remove unused voidPix, menuInvPix
  kconfig: qconf: remove ConfigItem::text/setText
  kconfig: qconf: remove ConfigList::addColumn/removeColumn
  kconfig: qconf: remove ConfigItem::pixmap/setPixmap
  kconfig: qconf: drop more localization code
  kconfig: qconf: remove 'parent' from ConfigList::updateMenuList()
  kconfig: qconf: remove unused argument from ConfigView::updateList()
  kconfig: qconf: remove unused argument from ConfigList::updateList()
  kconfig: qconf: omit parent to QHBoxLayout()
  kconfig: qconf: remove name from ConfigSearchWindow constructor
  kconfig: qconf: remove unused ConfigList::listView()
  kconfig: qconf: overload addToolBar() to create and insert toolbar
  kconfig: qconf: remove toolBar from ConfigMainWindow members
  kconfig: qconf: use 'menu' variable for (QMenu *)
  kconfig: qconf: do not use 'menu' variable for (QMenuBar *)
  kconfig: qconf: remove ->addSeparator() to menuBar
  kconfig: add 'static' to some file-local data
  ...

Right now, igc_ptp_reset() is called from igc_reset(), which is called
from igc_probe() before igc_ptp_init() has a chance to run. It is
detected as an attempt to use an spinlock without registering its key
first. See log below.

To avoid this problem, simplify the initialization: igc_ptp_init() is
only called from igc_probe(), and igc_ptp_reset() is only called from
igc_reset().

[    2.736332] INFO: trying to register non-static key.
[    2.736902] input: HDA Intel PCH Front Headphone as /devices/pci0000:00/0000:00:1f.3/sound/card0/input10
[    2.737513] the code is fine but needs lockdep annotation.
[    2.737513] turning off the locking correctness validator.
[    2.737515] CPU: 8 PID: 239 Comm: systemd-udevd Tainted: G            E     5.8.0-rc7+ #13
[    2.737515] Hardware name: Gigabyte Technology Co., Ltd. Z390 AORUS ULTRA/Z390 AORUS ULTRA-CF, BIOS F7 03/14/2019
[    2.737516] Call Trace:
[    2.737521]  dump_stack+0x78/0xa0
[    2.737524]  register_lock_class+0x6b1/0x6f0
[    2.737526]  ? lockdep_hardirqs_on_prepare+0xca/0x160
[    2.739177]  ? _raw_spin_unlock_irq+0x24/0x50
[    2.739179]  ? trace_hardirqs_on+0x1c/0xf0
[    2.740820]  __lock_acquire+0x56/0x1ff0
[    2.740823]  ? __schedule+0x30c/0x970
[    2.740825]  lock_acquire+0x97/0x3e0
[    2.740830]  ? igc_ptp_reset+0x35/0xf0 [igc]
[    2.740833]  ? schedule_hrtimeout_range_clock+0xb7/0x120
[    2.742507]  _raw_spin_lock_irqsave+0x3a/0x50
[    2.742512]  ? igc_ptp_reset+0x35/0xf0 [igc]
[    2.742515]  igc_ptp_reset+0x35/0xf0 [igc]
[    2.742519]  igc_reset+0x96/0xd0 [igc]
[    2.744148]  igc_probe+0x68f/0x7d0 [igc]
[    2.745796]  local_pci_probe+0x3d/0x70
[    2.745799]  pci_device_probe+0xd1/0x190
[    2.745802]  really_probe+0x15a/0x3f0
[    2.759936]  driver_probe_device+0xe1/0x150
[    2.759937]  device_driver_attach+0xa8/0xb0
[    2.761786]  __driver_attach+0x89/0x150
[    2.761786]  ? device_driver_attach+0xb0/0xb0
[    2.761787]  ? device_driver_attach+0xb0/0xb0
[    2.761788]  bus_for_each_dev+0x66/0x90
[    2.765012]  bus_add_driver+0x12e/0x1f0
[    2.765716]  driver_register+0x8b/0xe0
[    2.766418]  ? 0xffffffffc0230000
[    2.767119]  do_one_initcall+0x5a/0x310
[    2.767826]  ? kmem_cache_alloc_trace+0xe9/0x200
[    2.768528]  do_init_module+0x5c/0x260
[    2.769206]  __do_sys_finit_module+0x93/0xe0
[    2.770048]  do_syscall_64+0x46/0xa0
[    2.770716]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[    2.771396] RIP: 0033:0x7f83534589e0
[    2.772073] Code: 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 2e 2e 2e 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 80 24 0d 00 f7 d8 64 89 01 48
[    2.772074] RSP: 002b:00007ffd31d0ed18 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[    2.774854] RAX: ffffffffffffffda RBX: 000055d52816aba0 RCX: 00007f83534589e0
[    2.774855] RDX: 0000000000000000 RSI: 00007f83535b982f RDI: 0000000000000006
[    2.774855] RBP: 00007ffd31d0ed60 R08: 0000000000000000 R09: 00007ffd31d0ed30
[    2.774856] R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000000
[    2.774856] R13: 0000000000020000 R14: 00007f83535b982f R15: 000055d527f5e120

Fixes: 5f295805 ("igc: Add basic skeleton for PTP")
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Reviewed-by: Andre Guedes <andre.guedes@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

Since the stack relays on receiving own packets, it was overwriting own
transmit buffer from received packets.

At least theoretically, the received echo buffer can be corrupt or
changed and the session partner can request to resend previous data. In
this case we will re-send bad data.

With this patch we will stop to overwrite own TX buffer and use it for
sanity checking.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20200807105200.26441-6-o.rempel@pengutronix.deSigned-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

Sometimes it makes no sense to search the skb by pkt.dpo, since we need
next the skb within the transaction block. This may happen if we have an
ETP session with CTS set to less than 255 packets.

After this patch, we will be able to work with ETP sessions where the
block size (ETP.CM_CTS byte 2) is less than 255 packets.
Reported-by: Henrique Figueira <henrislip@gmail.com>
Reported-by: https://github.com/linux-can/can-utils/issues/228
Fixes: 9d71dd0c ("can: add support of SAE J1939 protocol")
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20200807105200.26441-5-o.rempel@pengutronix.deSigned-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

This patch adds check to ensure that the struct net_device::ml_priv is
allocated, as it is used later by the j1939 stack.

The allocation is done by all mainline CAN network drivers, but when using
bond or team devices this is not the case.

Bail out if no ml_priv is allocated.

Reported-by: syzbot+f03d384f3455d28833eb@syzkaller.appspotmail.com
Fixes: 9d71dd0c ("can: add support of SAE J1939 protocol")
Cc: linux-stable <stable@vger.kernel.org> # >= v5.4
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20200807105200.26441-4-o.rempel@pengutronix.deSigned-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

The current stack implementation do not support ECTS requests of not
aligned TP sized blocks.

If ECTS will request a block with size and offset spanning two TP
blocks, this will cause memcpy() to read beyond the queued skb (which
does only contain one TP sized block).

Sometimes KASAN will detect this read if the memory region beyond the
skb was previously allocated and freed. In other situations it will stay
undetected. The ETP transfer in any case will be corrupted.

This patch adds a sanity check to avoid this kind of read and abort the
session with error J1939_XTP_ABORT_ECTS_TOO_BIG.

Reported-by: syzbot+5322482fe520b02aea30@syzkaller.appspotmail.com
Fixes: 9d71dd0c ("can: add support of SAE J1939 protocol")
Cc: linux-stable <stable@vger.kernel.org> # >= v5.4
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20200807105200.26441-3-o.rempel@pengutronix.deSigned-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

In current J1939 stack implementation, we process all locally send
messages as own messages. Even if it was send by CAN_RAW socket.

To reproduce it use following commands:
testj1939 -P -r can0:0x80 &
cansend can0 18238040#0123

This step will trigger false positive not critical warning:
j1939_simple_recv: Received already invalidated message

With this patch we add additional check to make sure, related skb is own
echo message.

Fixes: 9d71dd0c ("can: add support of SAE J1939 protocol")
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20200807105200.26441-2-o.rempel@pengutronix.deSigned-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

syzbot found that at least 2 bytes of kernel information
were leaked during getsockname() on AF_CAN CAN_J1939 socket.

Since struct sockaddr_can has in fact two holes, simply
clear the whole area before filling it with useful data.

BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x81/0x90 mm/kmsan/kmsan_hooks.c:253
CPU: 0 PID: 8466 Comm: syz-executor511 Not tainted 5.8.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x21c/0x280 lib/dump_stack.c:118
 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:121
 kmsan_internal_check_memory+0x238/0x3d0 mm/kmsan/kmsan.c:423
 kmsan_copy_to_user+0x81/0x90 mm/kmsan/kmsan_hooks.c:253
 instrument_copy_to_user include/linux/instrumented.h:91 [inline]
 _copy_to_user+0x18e/0x260 lib/usercopy.c:39
 copy_to_user include/linux/uaccess.h:186 [inline]
 move_addr_to_user+0x3de/0x670 net/socket.c:237
 __sys_getsockname+0x407/0x5e0 net/socket.c:1909
 __do_sys_getsockname net/socket.c:1920 [inline]
 __se_sys_getsockname+0x91/0xb0 net/socket.c:1917
 __x64_sys_getsockname+0x4a/0x70 net/socket.c:1917
 do_syscall_64+0xad/0x160 arch/x86/entry/common.c:386
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x440219
Code: Bad RIP value.
RSP: 002b:00007ffe5ee150c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000033
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440219
RDX: 0000000020000240 RSI: 0000000020000100 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a20
R13: 0000000000401ab0 R14: 0000000000000000 R15: 0000000000000000

Local variable ----address@__sys_getsockname created at:
 __sys_getsockname+0x91/0x5e0 net/socket.c:1894
 __sys_getsockname+0x91/0x5e0 net/socket.c:1894

Bytes 2-3 of 24 are uninitialized
Memory access of size 24 starts at ffff8880ba2c7de8
Data copied to user address 0000000020000100

Fixes: 9d71dd0c ("can: add support of SAE J1939 protocol")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Robin van der Gracht <robin@protonic.nl>
Cc: Oleksij Rempel <o.rempel@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: linux-can@vger.kernel.org
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20200813161834.4021638-1-edumazet@google.comSigned-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

ConfigView::setOptionMode() only gets access to the 'list' member.

Move it to the more relevant ConfigList class.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

If you right-click the first row in the option tree, the pop-up menu
shows up, but if you right-click the second row or below, the event
is ignored due to the following check:

  if (e->y() <= header()->geometry().bottom()) {

Perhaps, the intention was to show the pop-menu only when the tree
header was right-clicked, but this handler is not called in that case.

Since the origin of e->y() starts from the bottom of the header,
this check is odd.

Going forward, you can right-click anywhere in the tree to get the
pop-up menu.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>