devm_kzalloc may fail and return NULL. So the null check is needed.
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
devm_kzalloc may fail and return null. So the null check is needed.
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- v1 -> v2: Move skb_set_owner_w to __tun_build_skb to reduce patch size
Small packets going out of a tap device go through an optimized code
path that uses build_skb() rather than sock_alloc_send_pskb(). The
latter calls skb_set_owner_w(), but the small packet code path does not.
The net effect is that small packets are not owned by the userland
application's socket (e.g. QEMU), while large packets are.
This can be seen with a TCP session, where packets are not owned when
the window size is small enough (around PAGE_SIZE), while they are once
the window grows (note that this requires the host to support virtio
tso for the guest to offload segmentation).
All this leads to inconsistent behaviour in the kernel, especially on
netfilter modules that uses sk->socket (e.g. xt_owner).
Fixes: 66ccbc9c87 ("tap: use build_skb() for small packet")
Signed-off-by: Alexis Bauvin <abauvin@scaleway.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Leon Romanovsky says:
====================
DIM fixes for 5.3
Those two fixes for recently merged DIM patches, both exposed through
RDMa DIM usage.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
DIM causes to the following warnings during kernel compilation
which indicates that tx_profile and rx_profile are supposed to
be declared in *.c and not in *.h files.
In file included from ./include/rdma/ib_verbs.h:64,
from ./include/linux/mlx5/device.h:37,
from ./include/linux/mlx5/driver.h:51,
from ./include/linux/mlx5/vport.h:36,
from drivers/infiniband/hw/mlx5/ib_virt.c:34:
./include/linux/dim.h:326:1: warning: _tx_profile_ defined but not used [-Wunused-const-variable=]
326 | tx_profile[DIM_CQ_PERIOD_NUM_MODES][NET_DIM_PARAMS_NUM_PROFILES] = {
| ^~~~~~~~~~
./include/linux/dim.h:320:1: warning: _rx_profile_ defined but not used [-Wunused-const-variable=]
320 | rx_profile[DIM_CQ_PERIOD_NUM_MODES][NET_DIM_PARAMS_NUM_PROFILES] = {
| ^~~~~~~~~~
Fixes: 4f75da3666 ("linux/dim: Move implementation to .c files")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
While using net_dim, a dim_sample was used without ever initializing the
comps value. Added use of DIV_ROUND_DOWN_ULL() to prevent potential
overflow, it should not be a problem to save the final result in an int
because after the division by epms the value should not be larger than a
few thousand.
[ 1040.127124] UBSAN: Undefined behaviour in lib/dim/dim.c:78:23
[ 1040.130118] signed integer overflow:
[ 1040.131643] 134718714 * 100 cannot be represented in type 'int'
Fixes: 398c2b05bb ("linux/dim: Add completions count to dim_sample")
Signed-off-by: Yamin Friedman <yaminf@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
act_ife at least requires TCA_IFE_PARMS, so we have to bail out
when there is no attribute passed in.
Reported-by: syzbot+fbb5b288c9cb6a2eeac4@syzkaller.appspotmail.com
Fixes: ef6980b6be ("introduce IFE action")
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Despite a proper NULL-termination after strncpy(..., ..., IFNAMSIZ - 1),
GCC8 still complains about *expected* string truncation:
xsk.c:330:2: error: 'strncpy' output may be truncated copying 15 bytes
from a string of length 15 [-Werror=stringop-truncation]
strncpy(ifr.ifr_name, xsk->ifname, IFNAMSIZ - 1);
This patch gets rid of the issue altogether by using memcpy instead.
There is no performance regression, as strncpy will still copy and fill
all of the bytes anyway.
v1->v2:
- rebase against bpf tree.
Cc: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
The label is used just once and the code it points at is not reused, no
point in keeping it.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
nft_meta_get_eval()'s tendency to bail out setting NFT_BREAK verdict in
situations where required data is missing leads to unexpected behaviour
with inverted checks like so:
| meta iifname != eth0 accept
This rule will never match if there is no input interface (or it is not
known) which is not intuitive and, what's worse, breaks consistency of
iptables-nft with iptables-legacy.
Fix this by falling back to placing a value in dreg which never matches
(avoiding accidental matches), i.e. zero for interface index and an
empty string for interface name.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
sock_efree() releases the sock refcnt, if we don't hold this refcnt
when setting skb->destructor to it, the refcnt would not be balanced.
This leads to several bug reports from syzbot.
I have checked other users of sock_efree(), all of them hold the
sock refcnt.
Fixes: c8c8218ec5 ("netrom: fix a memory leak in nr_rx_frame()")
Reported-and-tested-by: <syzbot+622bdabb128acc33427d@syzkaller.appspotmail.com>
Reported-and-tested-by: <syzbot+6eaef7158b19e3fec3a0@syzkaller.appspotmail.com>
Reported-and-tested-by: <syzbot+9399c158fcc09b21d0d2@syzkaller.appspotmail.com>
Reported-and-tested-by: <syzbot+a34e5f3d0300163f0c87@syzkaller.appspotmail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Some functions in the datapath code are factored out so that each
one has a stack frame smaller than 1024 bytes with gcc. However,
when compiling with clang, the functions are inlined more aggressively
and combined again so we get
net/openvswitch/datapath.c:1124:12: error: stack frame size of 1528 bytes in function 'ovs_flow_cmd_set' [-Werror,-Wframe-larger-than=]
Marking both get_flow_actions() and ovs_nla_init_match_and_action()
as 'noinline_for_stack' gives us the same behavior that we see with
gcc, and no warning. Note that this does not mean we actually use
less stack, as the functions call each other, and we still get
three copies of the large 'struct sw_flow_key' type on the stack.
The comment tells us that this was previously considered safe,
presumably since the netlink parsing functions are called with
a known backchain that does not also use a lot of stack space.
Fixes: 9cc9a5cb17 ("datapath: Avoid using stack larger than 1024.")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
I've been spending quite a bit of time fixing and
preventing bit rot in the core TLS code. TLS seems
to only be growing in importance, I'd like to help
ensuring the quality of our implementation.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The memory allocated for the stats array may contain arbitrary data.
Fixes: e4f9ba642f ("net: phy: mscc: add support for VSC8514 PHY.")
Fixes: 00d70d8e0e ("net: phy: mscc: add support for VSC8574 PHY")
Fixes: a5afc16780 ("net: phy: mscc: add support for VSC8584 PHY")
Fixes: f76178dc52 ("net: phy: mscc: add ethtool statistics counters")
Signed-off-by: Andreas Schwab <schwab@suse.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
SFP modules connected using the SGMII interface have their own PHYs which
are handled by the struct phylink's phydev field. On the other hand, for
the modules connected using 1000Base-X interface that field is not set.
Since commit ce0aa27ff3 ("sfp: add sfp-bus to bridge between network
devices and sfp cages") phylink_start() ends up setting the phydev field
using the sfp-bus infrastructure, which eventually calls phy_start() on it,
and then calling phy_start() again on the same phydev from phylink_start()
itself. Similar call sequence holds for phylink_stop(), only in the reverse
order. This results in WARNs during network interface bringup and shutdown
when a copper SFP module is connected, as phy_start() and phy_stop() are
called twice in a row for the same phy_device:
% ip link set up dev eth0
------------[ cut here ]------------
called from state UP
WARNING: CPU: 1 PID: 155 at drivers/net/phy/phy.c:895 phy_start+0x74/0xc0
Modules linked in:
CPU: 1 PID: 155 Comm: backend Not tainted 5.2.0+ #1
NIP: c0227bf0 LR: c0227bf0 CTR: c004d224
REGS: df547720 TRAP: 0700 Not tainted (5.2.0+)
MSR: 00029000 <CE,EE,ME> CR: 24002822 XER: 00000000
GPR00: c0227bf0 df5477d8 df5d7080 00000014 df9d2370 df9d5ac4 1f4eb000 00000001
GPR08: c061fe58 00000000 00000000 df5477d8 0000003c 100c8768 00000000 00000000
GPR16: df486a00 c046f1c8 c046eea0 00000000 c046e904 c0239604 db68449c 00000000
GPR24: e9083204 00000000 00000001 db684460 e9083404 00000000 db6dce00 db6dcc00
NIP [c0227bf0] phy_start+0x74/0xc0
LR [c0227bf0] phy_start+0x74/0xc0
Call Trace:
[df5477d8] [c0227bf0] phy_start+0x74/0xc0 (unreliable)
[df5477e8] [c023cad0] startup_gfar+0x398/0x3f4
[df547828] [c023cf08] gfar_enet_open+0x364/0x374
[df547898] [c029d870] __dev_open+0xe4/0x140
[df5478c8] [c029db70] __dev_change_flags+0xf0/0x188
[df5478f8] [c029dc28] dev_change_flags+0x20/0x54
[df547918] [c02ae304] do_setlink+0x310/0x818
[df547a08] [c02b1eb8] __rtnl_newlink+0x384/0x6b0
[df547c28] [c02b222c] rtnl_newlink+0x48/0x68
[df547c48] [c02ad7c8] rtnetlink_rcv_msg+0x240/0x27c
[df547c98] [c02cc068] netlink_rcv_skb+0x8c/0xf0
[df547cd8] [c02cba3c] netlink_unicast+0x114/0x19c
[df547d08] [c02cbd74] netlink_sendmsg+0x2b0/0x2c0
[df547d58] [c027b668] sock_sendmsg_nosec+0x20/0x40
[df547d68] [c027d080] ___sys_sendmsg+0x17c/0x1dc
[df547e98] [c027df7c] __sys_sendmsg+0x68/0x84
[df547ef8] [c027e430] sys_socketcall+0x1a0/0x204
[df547f38] [c000d1d8] ret_from_syscall+0x0/0x38
--- interrupt: c01 at 0xfd4e030
LR = 0xfd4e010
Instruction dump:
813f0188 38800000 2b890005 419d0014 3d40c046 5529103a 394aa208 7c8a482e
3c60c046 3863a1b8 4cc63182 4be009a1 <0fe00000> 48000030 3c60c046 3863a1d0
---[ end trace d4c095aeaf6ea998 ]---
and
% ip link set down dev eth0
------------[ cut here ]------------
called from state HALTED
WARNING: CPU: 1 PID: 184 at drivers/net/phy/phy.c:858 phy_stop+0x3c/0x88
<...>
Call Trace:
[df581788] [c0228450] phy_stop+0x3c/0x88 (unreliable)
[df581798] [c022d548] sfp_sm_phy_detach+0x1c/0x44
[df5817a8] [c022e8cc] sfp_sm_event+0x4b0/0x87c
[df581848] [c022f04c] sfp_upstream_stop+0x34/0x44
[df581858] [c0225608] phylink_stop+0x7c/0xe4
[df581868] [c023c57c] stop_gfar+0x7c/0x94
[df581888] [c023c5b8] gfar_close+0x24/0x94
[df5818a8] [c0298688] __dev_close_many+0xdc/0xf8
[df5818c8] [c029db58] __dev_change_flags+0xd8/0x188
[df5818f8] [c029dc28] dev_change_flags+0x20/0x54
[df581918] [c02ae304] do_setlink+0x310/0x818
[df581a08] [c02b1eb8] __rtnl_newlink+0x384/0x6b0
[df581c28] [c02b222c] rtnl_newlink+0x48/0x68
[df581c48] [c02ad7c8] rtnetlink_rcv_msg+0x240/0x27c
[df581c98] [c02cc068] netlink_rcv_skb+0x8c/0xf0
[df581cd8] [c02cba3c] netlink_unicast+0x114/0x19c
[df581d08] [c02cbd74] netlink_sendmsg+0x2b0/0x2c0
[df581d58] [c027b668] sock_sendmsg_nosec+0x20/0x40
[df581d68] [c027d080] ___sys_sendmsg+0x17c/0x1dc
[df581e98] [c027df7c] __sys_sendmsg+0x68/0x84
[df581ef8] [c027e430] sys_socketcall+0x1a0/0x204
[df581f38] [c000d1d8] ret_from_syscall+0x0/0x38
<...>
---[ end trace d4c095aeaf6ea999 ]---
SFP modules with the 1000Base-X interface are not affected.
Place explicit calls to phy_start() and phy_stop() before enabling or after
disabling an attached SFP module, where phydev is not yet set (or is
already unset), so they will be made only from the inside of sfp-bus, if
needed.
Fixes: 2179626156 ("net: phy: warn if phy_start is called from invalid state")
Signed-off-by: Arseny Solokha <asolokha@kb.kras.ru>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
-----BEGIN PGP SIGNATURE-----
iQFHBAABCgAxFiEEmvEkXzgOfc881GuFWsYho5HknSAFAl04JHsTHG1rbEBwZW5n
dXRyb25peC5kZQAKCRBaxiGjkeSdIB52B/9S17IKTEpoNwM5KvrR+ZMqWZTx6zng
iKNef14uuAemHzThMoSAJoJBGGzcgmZeu/nd0fyGg0f51kXVkapU4TsvYa2azkt9
WcTZQG3N4uUuW3D8hEbY2+au8e8ubNR+NnWQEqeoa5yuDGg7nSjD3wYd7rcY6jF5
veSGoZFQ9+MpjuYBHqtwiAauPAUqj8pHPAawGsaT/eNvsTHa7y43Iy38VbS2XTrF
Ds6mwp8unE0cuBUFD49YLs3JrYsbuQRf5q2kX3/qvIO9QtJ/GQ6Dt/Sy3iC7Eo9Y
PAVLK90sNb+LlRBKhfCAKUdgZsxdJ/kv6RfVDOiCoQDMVl/Ukv9UWB9Y
=1E76
-----END PGP SIGNATURE-----
Merge tag 'linux-can-fixes-for-5.3-20190724' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
Marc Kleine-Budde says:
====================
pull-request: can 2019-07-24
this is a pull reqeust of 7 patches for net/master.
The first patch is by Rasmus Villemoes add a missing netif_carrier_off() to
register_candev() so that generic netdev trigger based LEDs are initially off.
Nikita Yushchenko's patch for the rcar_canfd driver fixes a possible IRQ storm
on high load.
The patch by Weitao Hou for the mcp251x driver add missing error checking to
the work queue allocation.
Both Wen Yang's and Joakim Zhang's patch for the flexcan driver fix a problem
with the stop-mode.
Stephane Grosjean contributes a patch for the peak_usb driver to fix a
potential double kfree_skb().
The last patch is by YueHaibing and fixes the error path in can-gw's
cgw_module_init() function.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Since ip6_tnl_parse_tlv_enc_lim() can call pskb_may_pull()
which may change skb->data, so we need to re-load ipv6h at
the right place.
Fixes: 898b29798e ("ip6_gre: Refactor ip6gre xmit codes")
Cc: William Tu <u9012063@gmail.com>
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Acked-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch add error path for cgw_module_init to avoid possible crash if
some error occurs.
Fixes: c1aabdf379 ("can-gw: add netlink based CAN routing")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
When closing the CAN device while tx skbs are inflight, echo skb could
be released twice. By calling close_candev() before unlinking all
pending tx urbs, then the internal echo_skb[] array is fully and
correctly cleared before the USB write callback and, therefore,
can_get_echo_skb() are called, for each aborted URB.
Fixes: bb4785551f ("can: usb: PEAK-System Technik USB adapters driver core")
Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
To enter stop mode, the CPU should manually assert a global Stop Mode
request and check the acknowledgment asserted by FlexCAN. The CPU must
only consider the FlexCAN in stop mode when both request and
acknowledgment conditions are satisfied.
Fixes: de3578c198 ("can: flexcan: add self wakeup support")
Reported-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Cc: linux-stable <stable@vger.kernel.org> # >= v5.0
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
The gpr_np variable is still being used in dev_dbg() after the
of_node_put() call, which may result in use-after-free.
Fixes: de3578c198 ("can: flexcan: add self wakeup support")
Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Cc: linux-stable <stable@vger.kernel.org> # >= v5.0
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
add error check when workqueue alloc failed, and remove redundant code
to make it clear.
Fixes: e0000163e3 ("can: Driver for the Microchip MCP251x SPI CAN controllers")
Signed-off-by: Weitao Hou <houweitaoo@gmail.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
We have observed rcar_canfd driver entering IRQ storm under high load,
with following scenario:
- rcar_canfd_global_interrupt() in entered due to Rx available,
- napi_schedule_prep() is called, and sets NAPIF_STATE_SCHED in state
- Rx fifo interrupts are masked,
- rcar_canfd_global_interrupt() is entered again, this time due to
error interrupt (e.g. due to overflow),
- since scheduled napi poller has not yet executed, condition for calling
napi_schedule_prep() from rcar_canfd_global_interrupt() remains true,
thus napi_schedule_prep() gets called and sets NAPIF_STATE_MISSED flag
in state,
- later, napi poller function rcar_canfd_rx_poll() gets executed, and
calls napi_complete_done(),
- due to NAPIF_STATE_MISSED flag in state, this call does not clear
NAPIF_STATE_SCHED flag from state,
- on return from napi_complete_done(), rcar_canfd_rx_poll() unmasks Rx
interrutps,
- Rx interrupt happens, rcar_canfd_global_interrupt() gets called
and calls napi_schedule_prep(),
- since NAPIF_STATE_SCHED is set in state at this time, this call
returns false,
- due to that false return, rcar_canfd_global_interrupt() returns
without masking Rx interrupt
- and this results into IRQ storm: unmasked Rx interrupt happens again
and again is misprocessed in the same way.
This patch fixes that scenario by unmasking Rx interrupts only when
napi_complete_done() returns true, which means it has cleared
NAPIF_STATE_SCHED in state.
Fixes: dd3bd23eb4 ("can: rcar_canfd: Add Renesas R-Car CAN FD driver")
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
CONFIG_CAN_LEDS is deprecated. When trying to use the generic netdev
trigger as suggested, there's a small inconsistency with the link
property: The LED is on initially, stays on when the device is brought
up, and then turns off (as expected) when the device is brought down.
Make sure the LED always reflects the state of the CAN device.
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
'channels.max_combined' initialized only on ioctl success and
errno is only valid on ioctl failure.
The code doesn't produce any runtime issues, but makes memory
sanitizers angry:
Conditional jump or move depends on uninitialised value(s)
at 0x55C056F: xsk_get_max_queues (xsk.c:336)
by 0x55C05B2: xsk_create_bpf_maps (xsk.c:354)
by 0x55C089F: xsk_setup_xdp_prog (xsk.c:447)
by 0x55C0E57: xsk_socket__create (xsk.c:601)
Uninitialised value was created by a stack allocation
at 0x55C04CD: xsk_get_max_queues (xsk.c:318)
Additionally fixed warning on uninitialized bytes in ioctl arguments:
Syscall param ioctl(SIOCETHTOOL) points to uninitialised byte(s)
at 0x648D45B: ioctl (in /usr/lib64/libc-2.28.so)
by 0x55C0546: xsk_get_max_queues (xsk.c:330)
by 0x55C05B2: xsk_create_bpf_maps (xsk.c:354)
by 0x55C089F: xsk_setup_xdp_prog (xsk.c:447)
by 0x55C0E57: xsk_socket__create (xsk.c:601)
Address 0x1ffefff378 is on thread 1's stack
in frame #1, created by xsk_get_max_queues (xsk.c:318)
Uninitialised value was created by a stack allocation
at 0x55C04CD: xsk_get_max_queues (xsk.c:318)
CC: Magnus Karlsson <magnus.karlsson@intel.com>
Fixes: 1cad078842 ("libbpf: add support for using AF_XDP sockets")
Signed-off-by: Ilya Maximets <i.maximets@samsung.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Eric Dumazet says:
====================
First patch changes the kernel, second patch
adds a new test.
Note that other patches might be needed to take
care of similar issues in sock_ops_convert_ctx_access()
and SOCK_OPS_GET_FIELD()
====================
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Use BPF_REG_1 for source and destination of gso_segs read,
to exercise "bpf: fix access to skb_shared_info->gso_segs" fix.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Suggested-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Replace the custom implementation with fwnode_get_mac_address,
which works on both DT and ACPI platforms.
While here, replace memcpy() by ether_addr_copy().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The very first check in test_pkt_md_access is failing on s390, which
happens because loading a part of a struct __sk_buff field produces
an incorrect result.
The preprocessed code of the check is:
{
__u8 tmp = *((volatile __u8 *)&skb->len +
((sizeof(skb->len) - sizeof(__u8)) / sizeof(__u8)));
if (tmp != ((*(volatile __u32 *)&skb->len) & 0xFF)) return 2;
};
clang generates the following code for it:
0: 71 21 00 03 00 00 00 00 r2 = *(u8 *)(r1 + 3)
1: 61 31 00 00 00 00 00 00 r3 = *(u32 *)(r1 + 0)
2: 57 30 00 00 00 00 00 ff r3 &= 255
3: 5d 23 00 1d 00 00 00 00 if r2 != r3 goto +29 <LBB0_10>
Finally, verifier transforms it to:
0: (61) r2 = *(u32 *)(r1 +104)
1: (bc) w2 = w2
2: (74) w2 >>= 24
3: (bc) w2 = w2
4: (54) w2 &= 255
5: (bc) w2 = w2
The problem is that when verifier emits the code to replace a partial
load of a struct __sk_buff field (*(u8 *)(r1 + 3)) with a full load of
struct sk_buff field (*(u32 *)(r1 + 104)), an optional shift and a
bitwise AND, it assumes that the machine is little endian and
incorrectly decides to use a shift.
Adjust shift count calculation to account for endianness.
Fixes: 31fd85816d ("bpf: permits narrower load from bpf program context fields")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
The onboard sky2 NIC on ASUS P6T WS PRO doesn't work after PM resume
due to the infamous IRQ problem. Disabling MSI works around it, so
let's add it to the blacklist.
Unfortunately the BIOS on the machine doesn't fill the standard
DMI_SYS_* entry, so we pick up DMI_BOARD_* entries instead.
BugLink: https://bugzilla.suse.com/show_bug.cgi?id=1142496
Reported-and-tested-by: Marcus Seyfarth <m.seyfarth@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Each iteration of for_each_child_of_node puts the previous node, but in
the case of a return from the middle of the loop, there is no put, thus
causing a memory leak. Hence add an of_node_put before the return.
Issue found with Coccinelle.
Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Each iteration of for_each_available_child_of_node puts the previous
node, but in the case of a return from the middle of the loop, there is
no put, thus causing a memory leak. Hence add an of_node_put before the
return.
Issue found with Coccinelle.
Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel says:
====================
selftests: forwarding: GRE multipath fixes
Patch #1 ensures IPv4 forwarding is enabled during the test.
Patch #2 fixes the flower filters used to measure the distribution of
the traffic between the two nexthops, so that the test will pass
regardless if traffic is offloaded or not.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The TC filters used in the test do not work with veth devices because the
outer Ethertype is 802.1Q and not IPv4. The test passes with mlxsw
netdevs since the hardware always looks at "The first Ethertype that
does not point to either: VLAN, CNTAG or configurable Ethertype".
Fix this by matching on the VLAN ID instead, but on the ingress side.
The reason why this is not performed at egress is explained in the
commit cited below.
Fixes: 541ad323db ("selftests: forwarding: gre_multipath: Update next-hop statistics match criteria")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Stephen Suryaputra <ssuryaextr@gmail.com>
Tested-by: Stephen Suryaputra <ssuryaextr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The test did not enable IPv4 forwarding during its setup phase, which
causes the test to fail on machines where IPv4 forwarding is disabled.
Fixes: 54818c4c4b ("selftests: forwarding: Test multipath tunneling")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Stephen Suryaputra <ssuryaextr@gmail.com>
Tested-by: Stephen Suryaputra <ssuryaextr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Some glue logic drivers support 1G without having GMAC/GMAC4/XGMAC.
Let's allow this speed by default.
Reported-by: Ondrej Jirman <megi@xff.cz>
Tested-by: Ondrej Jirman <megi@xff.cz>
Fixes: 5b0d7d7da6 ("net: stmmac: Add the missing speeds that XGMAC supports")
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jose Abreu says:
====================
net: stmmac: Two fixes
Two fixes targeting -net.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
We need the memory to be zeroed upon allocation so use kcalloc()
instead.
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
RX Descriptors are being cleaned after setting the buffers which may
lead to buffer addresses being wiped out.
Fix this by clearing earlier the RX Descriptors.
Fixes: 2af6106ae9 ("net: stmmac: Introducing support for Page Pool")
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since commit(net: phy: marvell: change default m88e1510 LED configuration),
the active LED of Hip07 devices is always off, because Hip07 just
use 2 LEDs.
This patch adds a phy_register_fixup_for_uid() for m88e1510 to
correct the LED configuration.
Fixes: 077772468e ("net: phy: marvell: change default m88e1510 LED configuration")
Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>
Reviewed-by: linyunsheng <linyunsheng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
PPv2's XLGMAC can wait for 3 idle frames before triggering a link up
event. This can cause the link to be stuck low when there's traffic on
the interface, so disable this feature.
Fixes: 4bb0432628 ("net: mvpp2: phylink support")
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The following scenario was encountered during testing of logical
partition mobility on pseries partitions with bonded ibmvnic
adapters in LACP mode.
1. Driver receives a signal that the device has been
swapped, and it needs to reset to initialize the new
device.
2. Driver reports loss of carrier and begins initialization.
3. Bonding driver receives NETDEV_CHANGE notifier and checks
the slave's current speed and duplex settings. Because these
are unknown at the time, the bond sets its link state to
BOND_LINK_FAIL and handles the speed update, clearing
AD_PORT_LACP_ENABLE.
4. Driver finishes recovery and reports that the carrier is on.
5. Bond receives a new notification and checks the speed again.
The speeds are valid but miimon has not altered the link
state yet. AD_PORT_LACP_ENABLE remains off.
Because the slave's link state is still BOND_LINK_FAIL,
no further port checks are made when it recovers. Though
the slave devices are operational and have valid speed
and duplex settings, the bond will not send LACPDU's. The
simplest fix I can see is to force another speed check
in bond_miimon_commit. This way the bond will update
AD_PORT_LACP_ENABLE if needed when transitioning from
BOND_LINK_FAIL to BOND_LINK_UP.
CC: Jarod Wilson <jarod@redhat.com>
CC: Jay Vosburgh <j.vosburgh@gmail.com>
CC: Veaceslav Falico <vfalico@gmail.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Thomas Falcon <tlfalcon@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull preemption Kconfig fix from Thomas Gleixner:
"The PREEMPT_RT stub config renamed PREEMPT to PREEMPT_LL and defined
PREEMPT outside of the menu and made it selectable by both PREEMPT_LL
and PREEMPT_RT.
Stupid me missed that 114 defconfigs select CONFIG_PREEMPT which
obviously can't work anymore. oldconfig builds are affected as well,
but it's more obvious as the user gets asked. [old]defconfig silently
fixes it up and selects PREEMPT_NONE.
Unbreak it by undoing the rename and adding a intermediate config
symbol which is selected by both PREEMPT and PREEMPT_RT. That requires
to chase down a few #ifdefs, but it's better than tweaking 114
defconfigs and annoying users"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/rt, Kconfig: Unbreak def/oldconfig with CONFIG_PREEMPT=y
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCXTXCMwAKCRCRxhvAZXjc
ouXAAP9JssGQT+F3OyflYy5gsERsyl/N/YeOP3LG75SYDW5SFQEAneBPUj4v2eDv
6dktofHbebzFT7VWmtFwSFwRCb5r/AM=
=6pRr
-----END PGP SIGNATURE-----
Merge tag 'for-linus-20190722' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull pidfd polling fix from Christian Brauner:
"A fix for pidfd polling. It ensures that the task's exit state is
visible to all waiters"
* tag 'for-linus-20190722' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
pidfd: fix a poll race when setting exit_state
-----BEGIN PGP SIGNATURE-----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=6yeW
-----END PGP SIGNATURE-----
Merge tag 'for-5.3-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- fixes for leaks caused by recently merged patches
- one build fix
- a fix to prevent mixing of incompatible features
* tag 'for-5.3-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: don't leak extent_map in btrfs_get_io_geometry()
btrfs: free checksum hash on in close_ctree
btrfs: Fix build error while LIBCRC32C is module
btrfs: inode: Don't compress if NODATASUM or NODATACOW set
The merge of the CONFIG_PREEMPT_RT stub renamed CONFIG_PREEMPT to
CONFIG_PREEMPT_LL which causes all defconfigs which have CONFIG_PREEMPT=y
set to fall back to CONFIG_PREEMPT_NONE because CONFIG_PREEMPT depends on
the preemption mode choice wich defaults to NONE. This also affects
oldconfig builds.
So rather than changing 114 defconfig files and being an annoyance to
users, revert the rename and select a new config symbol PREEMPTION. That
keeps everything working smoothly and the revelant ifdef's are going to be
fixed up step by step.
Reported-by: Mark Rutland <mark.rutland@arm.com>
Fixes: a50a3f4b6a ("sched/rt, Kconfig: Introduce CONFIG_PREEMPT_RT")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-----BEGIN PGP SIGNATURE-----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=ZxJh
-----END PGP SIGNATURE-----
Merge tag 'media/v5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media fixes from Mauro Carvalho Chehab:
"For two regressions in media core:
- v4l2-subdev: fix regression in check_pad()
- videodev2.h: change V4L2_PIX_FMT_BGRA444 define: fourcc was already
in use"
* tag 'media/v5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
media: videodev2.h: change V4L2_PIX_FMT_BGRA444 define: fourcc was already in use
media: v4l2-subdev: fix regression in check_pad()
Navid Emamdoost