Commit ad6c9986bc ("vxlan: Fix GRO cells race condition between
receive and link delete") fixed a race condition for the typical case a vxlan
device is dismantled from the current netns. But if a netns is dismantled,
vxlan_destroy_tunnels() is called to schedule a unregister_netdevice_queue()
of all the vxlan tunnels that are related to this netns.
In vxlan_destroy_tunnels(), gro_cells_destroy() is called and finished before
unregister_netdevice_queue(). This means that the gro_cells_destroy() call is
done too soon, for the same reasons explained in above commit.
So we need to fully respect the RCU rules, and thus must remove the
gro_cells_destroy() call or risk use after-free.
Fixes: 58ce31cca1 ("vxlan: GRO support at tunnel layer")
Signed-off-by: Suanming.Mou <mousuanming@huawei.com>
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: Zhiqiang Liu <liuzhiqiang26@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
TCP/UDP checksum validity was propagated to skb
only if IP checksum is valid.
But for IPv6 there is no validity as there is no checksum in IPv6.
This patch propagates TCP/UDP checksum validity regardless of IP checksum.
Fixes: 018423e90b ("net: ethernet: aquantia: Add ring support code")
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: Nikita Danilov <nikita.danilov@aquantia.com>
Signed-off-by: Dmitry Bogdanov <dmitry.bogdanov@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The bug that Stan reported is as follows. After a restart, a 16-bit NIC
may be incorrectly identified as a 32-bit NIC and stop working.
mac8390 slot.E: Memory length resource not found, probing
mac8390 slot.E: Farallon EtherMac II-C (type farallon)
mac8390 slot.E: MAC 00:00:c5:30:c2:99, IRQ 61, 32 KB shared memory at 0xfeed0000, 32-bit access.
The bug never arises after a cold start and only intermittently after a
warm start. (I didn't investigate why the bug is intermittent.)
It turns out that memcpy_toio() is deprecated and memcmp_withio() also
has issues. Replacing these calls with mmio accessors fixes the problem.
Reported-and-tested-by: Stan Johnson <userm57@yahoo.com>
Fixes: 2964db0f59 ("m68k: Mac DP8390 update")
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Similarly to commit a7603ac1fc ("geneve: change NET_UDP_TUNNEL
dependency to select"), GTP has a dependency on NET_UDP_TUNNEL which
makes impossible to compile it if no other protocol depending on
NET_UDP_TUNNEL is selected.
Fix this by changing the depends to a select, and drop NET_IP_TUNNEL from
the select list, as it already depends on NET_UDP_TUNNEL.
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In my latest patch I missed one rcu_read_unlock(), in case
device is down.
Fixes: 4477138fa0 ("tun: properly test for IFF_UP")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Same reasons than the ones explained in commit 4179cb5a4c
("vxlan: test dev->flags & IFF_UP before calling netif_rx()")
netif_rx_ni() or napi_gro_frags() must be called under a strict contract.
At device dismantle phase, core networking clears IFF_UP
and flush_all_backlogs() is called after rcu grace period
to make sure no incoming packet might be in a cpu backlog
and still referencing the device.
A similar protocol is used for gro layer.
Most drivers call netif_rx() from their interrupt handler,
and since the interrupts are disabled at device dismantle,
netif_rx() does not have to check dev->flags & IFF_UP
Virtual drivers do not have this guarantee, and must
therefore make the check themselves.
Fixes: 1bd4978a88 ("tun: honor IFF_UP in tun_get_user()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If an interrupt is already pending when the interrupt is enabled on the
GXL phy, no IRQ will ever be triggered.
The fix is simply to make sure pending IRQs are cleared before setting
up the irq mask.
Fixes: cf127ff20a ("net: phy: meson-gxl: add interrupt support")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There are several statements that contain extra spacing in
the indentation; clean this up by removing spaces. Also
add { } braces on if statement to keep to kernel coding
style.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There is a statement that is indented incorrectly; replace
spaces with a tab.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
netdev_alloc_skb can fail and return a NULL pointer which is
dereferenced without a check. The patch avoids such a scenario.
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
When sending non-linear skbs with jumbo frames, we set up the non-paged
data and mark that as a last segment, although the paged fragments are
also prepared. This will stall the TX queue and trigger a watchdog warning
(a simple reproducer is to run an iperf client mode TCP test with a large
MTU - networking fails instantly).
Fix by checking if the skb is non-linear.
Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Acked-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 0e80bdc9a7 ("stmmac: first frame prep at the end of xmit
routine") overlooked jumbo frames when re-ordering the code, and as a
result the own bit was not getting set anymore for the first jumbo frame
descriptor. Commit 487e2e22ab ("net: stmmac: Set OWN bit for jumbo
frames") tried to fix this, but now the bit is getting set too early and
the DMA may start while we are still setting up the remaining descriptors.
And with the chain mode the own bit remains still unset.
Fix by setting the own bit at the end of xmit also with jumbo frames.
Fixes: 0e80bdc9a7 ("stmmac: first frame prep at the end of xmit routine")
Fixes: 487e2e22ab ("net: stmmac: Set OWN bit for jumbo frames")
Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Acked-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull networking fixes from David Miller:
"More fixes in the queue:
1) Netfilter nat can erroneously register the device notifier twice,
fix from Florian Westphal.
2) Use after free in nf_tables, from Pablo Neira Ayuso.
3) Parallel update of steering rule fix in mlx5 river, from Eli
Britstein.
4) RX processing panic in lan743x, fix from Bryan Whitehead.
5) Use before initialization of TCP_SKB_CB, fix from Christoph Paasch.
6) Fix locking in SRIOV mode of mlx4 driver, from Jack Morgenstein.
7) Fix TX stalls in lan743x due to mishandling of interrupt ACKing
modes, from Bryan Whitehead.
8) Fix infoleak in l2tp_ip6_recvmsg(), from Eric Dumazet"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (43 commits)
pptp: dst_release sk_dst_cache in pptp_sock_destruct
MAINTAINERS: GENET & SYSTEMPORT: Add internal Broadcom list
l2tp: fix infoleak in l2tp_ip6_recvmsg()
net/tls: Inform user space about send buffer availability
net_sched: return correct value for *notify* functions
lan743x: Fix TX Stall Issue
net/mlx4_core: Fix qp mtt size calculation
net/mlx4_core: Fix locking in SRIOV mode when switching between events and polling
net/mlx4_core: Fix reset flow when in command polling mode
mlxsw: minimal: Initialize base_mac
mlxsw: core: Prevent duplication during QSFP module initialization
net: dwmac-sun8i: fix a missing check of of_get_phy_mode
net: sh_eth: fix a missing check of of_get_phy_mode
net: 8390: fix potential NULL pointer dereferences
net: fujitsu: fix a potential NULL pointer dereference
net: qlogic: fix a potential NULL pointer dereference
isdn: hfcpci: fix potential NULL pointer dereference
Documentation: devicetree: add a new optional property for port mac address
net: rocker: fix a potential NULL pointer dereference
net: qlge: fix a potential NULL pointer dereference
...
sk_setup_caps() is called to set sk->sk_dst_cache in pptp_connect,
so we have to dst_release(sk->sk_dst_cache) in pptp_sock_destruct,
otherwise, the dst refcnt will leak.
It can be reproduced by this syz log:
r1 = socket$pptp(0x18, 0x1, 0x2)
bind$pptp(r1, &(0x7f0000000100)={0x18, 0x2, {0x0, @local}}, 0x1e)
connect$pptp(r1, &(0x7f0000000000)={0x18, 0x2, {0x3, @remote}}, 0x1e)
Consecutive dmesg warnings will occur:
unregister_netdevice: waiting for lo to become free. Usage count = 1
v1->v2:
- use rcu_dereference_protected() instead of rcu_dereference_check(),
as suggested by Eric.
Fixes: 00959ade36 ("PPTP: PPP over IPv4 (Point-to-Point Tunneling Protocol)")
Reported-by: Xiumei Mu <xmu@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It has been observed that tx queue may stall while downloading
from certain web sites (example www.speedtest.net)
The cause has been tracked down to a corner case where
the tx interrupt vector was disabled automatically, but
was not re enabled later.
The lan743x has two mechanisms to enable/disable individual
interrupts. Interrupts can be enabled/disabled by individual
source, and they can also be enabled/disabled by individual
vector which has been mapped to the source. Both must be
enabled for interrupts to work properly.
The TX code path, primarily uses the interrupt enable/disable of
the TX source bit, while leaving the vector enabled all the time.
However, while investigating this issue it was noticed that
the driver requested the use of the vector auto clear feature.
The test above revealed a case where the vector enable was
cleared unintentionally.
This patch fixes the issue by deleting the lines that request
the vector auto clear feature to be used.
Fixes: 23f0703c12 ("lan743x: Add main source files for new lan743x driver")
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Calculation of qp mtt size (in function mlx4_RST2INIT_wrapper)
ultimately depends on function roundup_pow_of_two.
If the amount of memory required by the QP is less than one page,
roundup_pow_of_two is called with argument zero. In this case, the
roundup_pow_of_two result is undefined.
Calling roundup_pow_of_two with a zero argument resulted in the
following stack trace:
UBSAN: Undefined behaviour in ./include/linux/log2.h:61:13
shift exponent 64 is too large for 64-bit type 'long unsigned int'
CPU: 4 PID: 26939 Comm: rping Tainted: G OE 4.19.0-rc1
Hardware name: Supermicro X9DR3-F/X9DR3-F, BIOS 3.2a 07/09/2015
Call Trace:
dump_stack+0x9a/0xeb
ubsan_epilogue+0x9/0x7c
__ubsan_handle_shift_out_of_bounds+0x254/0x29d
? __ubsan_handle_load_invalid_value+0x180/0x180
? debug_show_all_locks+0x310/0x310
? sched_clock+0x5/0x10
? sched_clock+0x5/0x10
? sched_clock_cpu+0x18/0x260
? find_held_lock+0x35/0x1e0
? mlx4_RST2INIT_QP_wrapper+0xfb1/0x1440 [mlx4_core]
mlx4_RST2INIT_QP_wrapper+0xfb1/0x1440 [mlx4_core]
Fix this by explicitly testing for zero, and returning one if the
argument is zero (assuming that the next higher power of 2 in this case
should be one).
Fixes: c82e9aa0a8 ("mlx4_core: resource tracking for HCA resources used by guests")
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In procedures mlx4_cmd_use_events() and mlx4_cmd_use_polling(), we need to
guarantee that there are no FW commands in progress on the comm channel
(for VFs) or wrapped FW commands (on the PF) when SRIOV is active.
We do this by also taking the slave_cmd_mutex when SRIOV is active.
This is especially important when switching from event to polling, since we
free the command-context array during the switch. If there are FW commands
in progress (e.g., waiting for a completion event), the completion event
handler will access freed memory.
Since the decision to use comm_wait or comm_poll is taken before grabbing
the event_sem/poll_sem in mlx4_comm_cmd_wait/poll, we must take the
slave_cmd_mutex as well (to guarantee that the decision to use events or
polling and the call to the appropriate cmd function are atomic).
Fixes: a7e1f04905 ("net/mlx4_core: Fix deadlock when switching between polling and event fw commands")
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
As part of unloading a device, the driver switches from
FW command event mode to FW command polling mode.
Part of switching over to polling mode is freeing the command context array
memory (unfortunately, currently, without NULLing the command context array
pointer).
The reset flow calls "complete" to complete all outstanding fw commands
(if we are in event mode). The check for event vs. polling mode here
is to test if the command context array pointer is NULL.
If the reset flow is activated after the switch to polling mode, it will
attempt (incorrectly) to complete all the commands in the context array --
because the pointer was not NULLed when the driver switched over to polling
mode.
As a result, we have a use-after-free situation, which results in a
kernel crash.
For example:
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<ffffffff876c4a8e>] __wake_up_common+0x2e/0x90
PGD 0
Oops: 0000 [#1] SMP
Modules linked in: netconsole nfsv3 nfs_acl nfs lockd grace ...
CPU: 2 PID: 940 Comm: kworker/2:3 Kdump: loaded Not tainted 3.10.0-862.el7.x86_64 #1
Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS 090006 04/28/2016
Workqueue: events hv_eject_device_work [pci_hyperv]
task: ffff8d1734ca0fd0 ti: ffff8d17354bc000 task.ti: ffff8d17354bc000
RIP: 0010:[<ffffffff876c4a8e>] [<ffffffff876c4a8e>] __wake_up_common+0x2e/0x90
RSP: 0018:ffff8d17354bfa38 EFLAGS: 00010082
RAX: 0000000000000000 RBX: ffff8d17362d42c8 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffff8d17362d42c8
RBP: ffff8d17354bfa70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000298 R11: ffff8d173610e000 R12: ffff8d17362d42d0
R13: 0000000000000246 R14: 0000000000000000 R15: 0000000000000003
FS: 0000000000000000(0000) GS:ffff8d1802680000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000f16d8000 CR4: 00000000001406e0
Call Trace:
[<ffffffff876c7adc>] complete+0x3c/0x50
[<ffffffffc04242f0>] mlx4_cmd_wake_completions+0x70/0x90 [mlx4_core]
[<ffffffffc041e7b1>] mlx4_enter_error_state+0xe1/0x380 [mlx4_core]
[<ffffffffc041fa4b>] mlx4_comm_cmd+0x29b/0x360 [mlx4_core]
[<ffffffffc041ff51>] __mlx4_cmd+0x441/0x920 [mlx4_core]
[<ffffffff877f62b1>] ? __slab_free+0x81/0x2f0
[<ffffffff87951384>] ? __radix_tree_lookup+0x84/0xf0
[<ffffffffc043a8eb>] mlx4_free_mtt_range+0x5b/0xb0 [mlx4_core]
[<ffffffffc043a957>] mlx4_mtt_cleanup+0x17/0x20 [mlx4_core]
[<ffffffffc04272c7>] mlx4_free_eq+0xa7/0x1c0 [mlx4_core]
[<ffffffffc042803e>] mlx4_cleanup_eq_table+0xde/0x130 [mlx4_core]
[<ffffffffc0433e08>] mlx4_unload_one+0x118/0x300 [mlx4_core]
[<ffffffffc0434191>] mlx4_remove_one+0x91/0x1f0 [mlx4_core]
The fix is to set the command context array pointer to NULL after freeing
the array.
Fixes: f5aef5aa35 ("net/mlx4_core: Activate reset flow upon fatal command cases")
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently base_mac is not initialized which causes wrong reporting of
zeroed parent_id to userspace. Fix this by initializing base_mac
properly.
Fixes: c100e47caa ("mlxsw: minimal: Add ethtool support")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Verify during thermal initialization if QSFP module's entry is already
configured in order to prevent duplication.
Such scenario could happen in case two switch drivers (PCI and I2C
based) coexist and if after boot, splitting configuration is applied
for some ports and then I2C based driver is re-probed.
In such case after reboot same QSFP module, associated with split will
be discovered by I2C based driver few times, and it will cause a crash.
It could happen for example on system equipped with BMC (Baseboard
Management Controller), running I2C based driver, when the next steps
are performed:
- System boot
- Host side configures port spilt.
- BMC side is rebooted.
Fixes: 6a79507cfe ("mlxsw: core: Extend thermal module with per QSFP module thermal zones")
Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
of_get_phy_mode may fail and return a negative error code;
the fix checks the return value of of_get_phy_mode and
returns -EINVAL of it fails.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
of_get_phy_mode may fail and return a negative error code;
the fix checks the return value of of_get_phy_mode and
returns NULL of it fails.
Fixes: b356e978e9 ("sh_eth: add device tree support")
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Reviewed-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
In case ioremap fails, the fix releases resources and returns
to avoid NULL pointer dereferences.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
In case ioremap fails, the fix releases the pcmcia window and
returns -ENOMEM to avoid the NULL pointer dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
In case create_singlethread_workqueue fails, the fix returns
-ENOMEM to avoid NULL pointer dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
In case kzalloc fails, the fix releases resources and returns
NOTIFY_BAD to avoid NULL pointer dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
In case alloc_ordered_workqueue fails, the fix returns
-ENOMEM to avoid NULL pointer dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
In case alloc_ordered_workqueue fails, the fix reports the error
and returns -ENOMEM.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
In case octeon_alloc_soft_command fails, the fix reports the
error and returns to avoid NULL pointer dereferences.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
It has been noticed that running the speed test at
www.speedtest.net occasionally causes a kernel panic.
Investigation revealed that under this test RX buffer allocation
sometimes fails and returns NULL. But the lan743x driver did
not handle this case.
This patch fixes this issue by attempting to allocate a buffer
before sending the new rx packet to the OS. If the allocation
fails then the new rx packet is dropped and the existing buffer
is reused in the DMA ring.
Updates for v2:
Additional 2 locations where allocation was not checked,
has been changed to reuse existing buffer.
Fixes: 23f0703c12 ("lan743x: Add main source files for new lan743x driver")
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In case octeon_alloc_soft_command fails, the fix reports the
error and returns to avoid NULL pointer dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
If we try to set VFs rate on a VF (not PF) net device, the kernel
will be crash. The commands are show as below:
$ echo 2 > /sys/class/net/$MLX_PF0/device/sriov_numvfs
$ ip link set $MLX_VF0 vf 0 max_tx_rate 2 min_tx_rate 1
If not applied the first patch ("net/mlx5: Avoid panic when setting
vport mac, getting vport config"), the command:
$ ip link set $MLX_VF0 vf 0 rate 100
can also crash the kernel.
[ 1650.006388] RIP: 0010:mlx5_eswitch_set_vport_rate+0x1f/0x260 [mlx5_core]
[ 1650.007092] do_setlink+0x982/0xd20
[ 1650.007129] __rtnl_newlink+0x528/0x7d0
[ 1650.007374] rtnl_newlink+0x43/0x60
[ 1650.007407] rtnetlink_rcv_msg+0x2a2/0x320
[ 1650.007484] netlink_rcv_skb+0xcb/0x100
[ 1650.007519] netlink_unicast+0x17f/0x230
[ 1650.007554] netlink_sendmsg+0x2d2/0x3d0
[ 1650.007592] sock_sendmsg+0x36/0x50
[ 1650.007625] ___sys_sendmsg+0x280/0x2a0
[ 1650.007963] __sys_sendmsg+0x58/0xa0
[ 1650.007998] do_syscall_64+0x5b/0x180
[ 1650.009438] entry_SYSCALL_64_after_hwframe+0x44/0xa9
Fixes: c9497c9890 ("net/mlx5: Add support for setting VF min rate")
Cc: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
If we try to set VFs mac address on a VF (not PF) net device,
the kernel will be crash. The commands are show as below:
$ echo 2 > /sys/class/net/$MLX_PF0/device/sriov_numvfs
$ ip link set $MLX_VF0 vf 0 mac 00:11:22:33:44:00
[exception RIP: mlx5_eswitch_set_vport_mac+41]
[ffffb8b7079e3688] do_setlink at ffffffff8f67f85b
[ffffb8b7079e37a8] __rtnl_newlink at ffffffff8f683778
[ffffb8b7079e3b68] rtnl_newlink at ffffffff8f683a63
[ffffb8b7079e3b90] rtnetlink_rcv_msg at ffffffff8f67d812
[ffffb8b7079e3c10] netlink_rcv_skb at ffffffff8f6b88ab
[ffffb8b7079e3c60] netlink_unicast at ffffffff8f6b808f
[ffffb8b7079e3ca0] netlink_sendmsg at ffffffff8f6b8412
[ffffb8b7079e3d18] sock_sendmsg at ffffffff8f6452f6
[ffffb8b7079e3d30] ___sys_sendmsg at ffffffff8f645860
[ffffb8b7079e3eb0] __sys_sendmsg at ffffffff8f647a38
[ffffb8b7079e3f38] do_syscall_64 at ffffffff8f00401b
[ffffb8b7079e3f50] entry_SYSCALL_64_after_hwframe at ffffffff8f80008c
and
[exception RIP: mlx5_eswitch_get_vport_config+12]
[ffffa70607e57678] mlx5e_get_vf_config at ffffffffc03c7f8f [mlx5_core]
[ffffa70607e57688] do_setlink at ffffffffbc67fa59
[ffffa70607e577a8] __rtnl_newlink at ffffffffbc683778
[ffffa70607e57b68] rtnl_newlink at ffffffffbc683a63
[ffffa70607e57b90] rtnetlink_rcv_msg at ffffffffbc67d812
[ffffa70607e57c10] netlink_rcv_skb at ffffffffbc6b88ab
[ffffa70607e57c60] netlink_unicast at ffffffffbc6b808f
[ffffa70607e57ca0] netlink_sendmsg at ffffffffbc6b8412
[ffffa70607e57d18] sock_sendmsg at ffffffffbc6452f6
[ffffa70607e57d30] ___sys_sendmsg at ffffffffbc645860
[ffffa70607e57eb0] __sys_sendmsg at ffffffffbc647a38
[ffffa70607e57f38] do_syscall_64 at ffffffffbc00401b
[ffffa70607e57f50] entry_SYSCALL_64_after_hwframe at ffffffffbc80008c
Fixes: a8d70a054a ("net/mlx5: E-Switch, Disallow vlan/spoofcheck setup if not being esw manager")
Cc: Eli Cohen <eli@mellanox.com>
Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
In case number of channels is changed while interface is down,
RSS indirection table is mistakenly not modified accordingly,
causing access to out-of-range non-existing object.
Fix by updating the RSS indireciton table also in the early
return flow of interface down.
Fixes: fb35c534b7 ("net/mlx5e: Fix NULL pointer derefernce in set channels error flow")
Fixes: bbeb53b8b2 ("net/mlx5e: Move RSS params to a dedicated struct")
Reported-by: Or Gerlitz <ogerlitz@mellanox.com>
Tested-by: Maria Pasechnik <mariap@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Update the RX checksum only if the feature is enabled.
Fixes: 9d6bd752c6 ("net/mlx5e: IPoIB, RX handler")
Signed-off-by: Feras Daoud <ferasda@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Currently, we fail to retrieve the PF number in some cases (e.g
single ported cards, lag capability), this further results in a
call trace issued by the rtnetlink code, since the error value
is not -EOPNOTSUPP. Change the implementation to be independent
from the lag code and function properly on both two ports and
single ported cards.
Call Trace:
[ 194.525057] mlx5_core 0000:82:00.0: mlx5_lag_get_pf_num:605:(pid 837): no lag device, can't get pf num
[ 194.525804] WARNING: CPU: 7 PID: 837 at net/core/rtnetlink.c:3457 rtmsg_ifinfo_build_skb+0x131/0x160
[ 194.529952] CPU: 7 PID: 837 Comm: kworker/7:3 Tainted: G W O 5.0.0-rc7+ #3
[ 194.531307] Workqueue: events linkwatch_event
[ 194.531697] RIP: 0010:rtmsg_ifinfo_build_skb+0x131/0x160
[ 194.545007] Call Trace:
[ 194.545406] rtmsg_ifinfo_event.part.29+0x1b/0xb0
[ 194.545810] rtmsg_ifinfo+0x51/0x80
[ 194.546209] netdev_state_change+0xc7/0x110
[ 194.546608] ? dev_valid_name+0x1b0/0x1b0
[ 194.547010] ? __local_bh_enable_ip+0xef/0x1d0
[ 194.547411] ? lockdep_hardirqs_on+0x3ea/0x560
[ 194.547811] ? linkwatch_do_dev+0x9b/0x100
[ 194.548207] linkwatch_do_dev+0x9b/0x100
[ 194.548605] __linkwatch_run_queue+0x244/0x430
[ 194.549014] ? linkwatch_schedule_work+0x100/0x100
[ 194.549412] ? lock_acquire+0x10f/0x2d0
[ 194.549816] linkwatch_event+0x3f/0x50
[ 194.550212] process_one_work+0x7d3/0x1460
Fixes: c12ecc2305 ("net/mlx5e: Move to use common phys port names for vport representors")
Signed-off-by: Roi Dayan <roid@mellanox.com>
Acked-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
With commit a18e879d4e ("net/mlx5e: Annul encap action ordering
requirement") and a use-case of e-switch remote mirroring, the
incremental/stepped FTE removal process done by the fs core got us to
illegal transient states and FW errors:
SET_FLOW_TABLE_ENTRY(0x936) op_mod(0x0) failed, status bad
parameter(0x3), syndrome (0x9c2e40)
To avoid that and improve FTE removal performance, aggregate the FTE's
updates that should be applied. Remove the FTE if it is empty, or apply
one FW update command with the aggregated updates.
Fixes: a18e879d4e ("net/mlx5e: Annul encap action ordering requirement")
Signed-off-by: Eli Britstein <elibr@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Add a locked flag to the node removal functions to signal if the
parent is already locked from the caller function or not as a pre-step
towards outside lock. Currently always use false with no functional
change.
Signed-off-by: Eli Britstein <elibr@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Add modify FTE helper function and use it when deleting a rule, as a
pre-step towards consolidated FTE modification, with no functional
change.
Signed-off-by: Eli Britstein <elibr@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
There might be a condition where the fte found is not active yet. In
this case we should not use it, but continue to search for another, or
allocate a new one.
Fixes: bd71b08ec2 ("net/mlx5: Support multiple updates of steering rules in parallel")
Signed-off-by: Eli Britstein <elibr@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Pull networking fixes from David Miller:
"First batch of fixes in the new merge window:
1) Double dst_cache free in act_tunnel_key, from Wenxu.
2) Avoid NULL deref in IN_DEV_MFORWARD() by failing early in the
ip_route_input_rcu() path, from Paolo Abeni.
3) Fix appletalk compile regression, from Arnd Bergmann.
4) If SLAB objects reach the TCP sendpage method we are in serious
trouble, so put a debugging check there. From Vasily Averin.
5) Memory leak in hsr layer, from Mao Wenan.
6) Only test GSO type on GSO packets, from Willem de Bruijn.
7) Fix crash in xsk_diag_put_umem(), from Eric Dumazet.
8) Fix VNIC mailbox length in nfp, from Dirk van der Merwe.
9) Fix race in ipv4 route exception handling, from Xin Long.
10) Missing DMA memory barrier in hns3 driver, from Jian Shen.
11) Use after free in __tcf_chain_put(), from Vlad Buslov.
12) Handle inet_csk_reqsk_queue_add() failures, from Guillaume Nault.
13) Return value correction when ip_mc_may_pull() fails, from Eric
Dumazet.
14) Use after free in x25_device_event(), also from Eric"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (72 commits)
gro_cells: make sure device is up in gro_cells_receive()
vxlan: test dev->flags & IFF_UP before calling gro_cells_receive()
net/x25: fix use-after-free in x25_device_event()
isdn: mISDNinfineon: fix potential NULL pointer dereference
net: hns3: fix to stop multiple HNS reset due to the AER changes
ip: fix ip_mc_may_pull() return value
net: keep refcount warning in reqsk_free()
net: stmmac: Avoid one more sometimes uninitialized Clang warning
net: dsa: mv88e6xxx: Set correct interface mode for CPU/DSA ports
rxrpc: Fix client call queueing, waiting for channel
tcp: handle inet_csk_reqsk_queue_add() failures
net: ethernet: sun: Zero initialize class in default case in niu_add_ethtool_tcam_entry
8139too : Add support for U.S. Robotics USR997901A 10/100 Cardbus NIC
fou, fou6: avoid uninit-value in gue_err() and gue6_err()
net: sched: fix potential use-after-free in __tcf_chain_put()
vhost: silence an unused-variable warning
vsock/virtio: fix kernel panic from virtio_transport_reset_no_sock
connector: fix unsafe usage of ->real_parent
vxlan: do not need BH again in vxlan_cleanup()
net: hns3: add dma_rmb() for rx description
...
Same reasons than the ones explained in commit 4179cb5a4c
("vxlan: test dev->flags & IFF_UP before calling netif_rx()")
netif_rx() or gro_cells_receive() must be called under a strict contract.
At device dismantle phase, core networking clears IFF_UP
and flush_all_backlogs() is called after rcu grace period
to make sure no incoming packet might be in a cpu backlog
and still referencing the device.
A similar protocol is used for gro_cells infrastructure, as
gro_cells_destroy() will be called only after a full rcu
grace period is observed after IFF_UP has been cleared.
Most drivers call netif_rx() from their interrupt handler,
and since the interrupts are disabled at device dismantle,
netif_rx() does not have to check dev->flags & IFF_UP
Virtual drivers do not have this guarantee, and must
therefore make the check themselves.
Otherwise we risk use-after-free and/or crashes.
Fixes: d342894c5d ("vxlan: virtual extensible lan")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The commit bfcb79fca1
("PCI/ERR: Run error recovery callbacks for all affected devices")
affected the non-fatal error recovery logic for the HNS and RDMA devices.
This is because each HNS PF under PCIe bus receive callbacks
from the AER driver when an error is reported for one of the PF.
This causes unwanted PF resets because
the HNS decides which PF to reset based on the reset type set.
The HNS error handling code sets the reset type based on the hw error
type detected.
This patch provides fix for the above issue for the recovery of
the hw errors in the HNS and RDMA devices.
This patch needs backporting to the kernel v5.0+
Fixes: 332fbf5765 ("net: hns3: add handling of hw ras errors using new set of commands")
Reported-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: Shiju Jose <shiju.jose@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This has been a slightly more active cycle than normal with ongoing core
changes and quite a lot of collected driver updates.
- Various driver fixes for bnxt_re, cxgb4, hns, mlx5, pvrdma, rxe
- A new data transfer mode for HFI1 giving higher performance
- Significant functional and bug fix update to the mlx5 On-Demand-Paging MR
feature
- A chip hang reset recovery system for hns
- Change mm->pinned_vm to an atomic64
- Update bnxt_re to support a new 57500 chip
- A sane netlink 'rdma link add' method for creating rxe devices and fixing
the various unregistration race conditions in rxe's unregister flow
- Allow lookup up objects by an ID over netlink
- Various reworking of the core to driver interface:
* Drivers should not assume umem SGLs are in PAGE_SIZE chunks
* ucontext is accessed via udata not other means
* Start to make the core code responsible for object memory
allocation
* Drivers should convert struct device to struct ib_device
via a helper
* Drivers have more tools to avoid use after unregister problems
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
"This has been a slightly more active cycle than normal with ongoing
core changes and quite a lot of collected driver updates.
- Various driver fixes for bnxt_re, cxgb4, hns, mlx5, pvrdma, rxe
- A new data transfer mode for HFI1 giving higher performance
- Significant functional and bug fix update to the mlx5
On-Demand-Paging MR feature
- A chip hang reset recovery system for hns
- Change mm->pinned_vm to an atomic64
- Update bnxt_re to support a new 57500 chip
- A sane netlink 'rdma link add' method for creating rxe devices and
fixing the various unregistration race conditions in rxe's
unregister flow
- Allow lookup up objects by an ID over netlink
- Various reworking of the core to driver interface:
- drivers should not assume umem SGLs are in PAGE_SIZE chunks
- ucontext is accessed via udata not other means
- start to make the core code responsible for object memory
allocation
- drivers should convert struct device to struct ib_device via a
helper
- drivers have more tools to avoid use after unregister problems"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (280 commits)
net/mlx5: ODP support for XRC transport is not enabled by default in FW
IB/hfi1: Close race condition on user context disable and close
RDMA/umem: Revert broken 'off by one' fix
RDMA/umem: minor bug fix in error handling path
RDMA/hns: Use GFP_ATOMIC in hns_roce_v2_modify_qp
cxgb4: kfree mhp after the debug print
IB/rdmavt: Fix concurrency panics in QP post_send and modify to error
IB/rdmavt: Fix loopback send with invalidate ordering
IB/iser: Fix dma_nents type definition
IB/mlx5: Set correct write permissions for implicit ODP MR
bnxt_re: Clean cq for kernel consumers only
RDMA/uverbs: Don't do double free of allocated PD
RDMA: Handle ucontext allocations by IB/core
RDMA/core: Fix a WARN() message
bnxt_re: fix the regression due to changes in alloc_pbl
IB/mlx4: Increase the timeout for CM cache
IB/core: Abort page fault handler silently during owning process exit
IB/mlx5: Validate correct PD before prefetch MR
IB/mlx5: Protect against prefetch of invalid MR
RDMA/uverbs: Store PR pointer before it is overwritten
...
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Merge tag 'pci-v5.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
- Use match_string() instead of reimplementing it (Andy Shevchenko)
- Enable SERR# forwarding for all bridges (Bharat Kumar Gogada)
- Use Latency Tolerance Reporting if already enabled by platform (Bjorn
Helgaas)
- Save/restore LTR info for suspend/resume (Bjorn Helgaas)
- Fix DPC use of uninitialized data (Dongdong Liu)
- Probe bridge window attributes only once at enumeration-time to fix
device accesses during rescan (Bjorn Helgaas)
- Return BAR size (not "size -1 ") from pci_size() to simplify code (Du
Changbin)
- Use config header type (not class code) identify bridges more
reliably (Honghui Zhang)
- Work around Intel Denverton incorrect Trace Hub BAR size reporting
(Alexander Shishkin)
- Reorder pciehp cached state/hardware state updates to avoid missed
interrupts (Mika Westerberg)
- Turn ibmphp semaphores into completions or mutexes (Arnd Bergmann)
- Mark expected switch fall-through (Mathieu Malaterre)
- Use of_node_name_eq() for node name comparisons (Rob Herring)
- Add ACS and pciehp quirks for HXT SD4800 (Shunyong Yang)
- Consolidate Rohm Vendor ID definitions (Andy Shevchenko)
- Use u32 (not __u32) for things not exposed to userspace (Logan
Gunthorpe)
- Fix locking semantics of bus and slot reset interfaces (Alex
Williamson)
- Update PCIEPORTBUS Kconfig help text (Hou Zhiqiang)
- Allow portdrv to claim subtractive decode Ports so PCIe services will
work for them (Honghui Zhang)
- Report PCIe links that become degraded at run-time (Alexandru
Gagniuc)
- Blacklist Gigabyte X299 Root Port power management to fix Thunderbolt
hotplug (Mika Westerberg)
- Revert runtime PM suspend/resume callbacks that broke PME on network
cable plug (Mika Westerberg)
- Disable Data Link State Changed interrupts to prevent wakeup
immediately after suspend (Mika Westerberg)
- Extend altera to support Stratix 10 (Ley Foon Tan)
- Allow building altera driver on ARM64 (Ley Foon Tan)
- Replace Douglas with Tom Joseph as Cadence PCI host/endpoint
maintainer (Lorenzo Pieralisi)
- Add DT support for R-Car RZ/G2E (R8A774C0) (Fabrizio Castro)
- Add dra72x/dra74x/dra76x SoC compatible strings (Kishon Vijay Abraham I)
- Enable x2 mode support for dra72x/dra74x/dra76x SoC (Kishon Vijay
Abraham I)
- Configure dra7xx PHY to PCIe mode (Kishon Vijay Abraham I)
- Simplify dwc (remove unnecessary header includes, name variables
consistently, reduce inverted logic, etc) (Gustavo Pimentel)
- Add i.MX8MQ support (Andrey Smirnov)
- Add message to help debug dwc MSI-X mask bit errors (Gustavo
Pimentel)
- Work around imx7d PCIe PLL erratum (Trent Piepho)
- Don't assert qcom reset GPIO during probe (Bjorn Andersson)
- Skip dwc MSI init if MSIs have been disabled (Lucas Stach)
- Use memcpy_fromio()/memcpy_toio() instead of plain memcpy() in PCI
endpoint framework (Wen Yang)
- Add interface to discover supported endpoint features to replace a
bitfield that wasn't flexible enough (Kishon Vijay Abraham I)
- Implement the new supported-feature interface for designware-plat,
dra7xx, rockchip, cadence (Kishon Vijay Abraham I)
- Fix issues with 64-bit BAR in endpoints (Kishon Vijay Abraham I)
- Add layerscape endpoint mode support (Xiaowei Bao)
- Remove duplicate struct hv_vp_set in favor of struct hv_vpset (Maya
Nakamura)
- Rework hv_irq_unmask() to use cpumask_to_vpset() instead of
open-coded reimplementation (Maya Nakamura)
- Align Hyper-V struct retarget_msi_interrupt arguments (Maya Nakamura)
- Fix mediatek MMIO size computation to enable full size of available
MMIO space (Honghui Zhang)
- Fix mediatek DMA window size computation to allow endpoint DMA access
to full DRAM address range (Honghui Zhang)
- Fix mvebu prefetchable BAR regression caused by common bridge
emulation that assumed all bridges had prefetchable windows (Thomas
Petazzoni)
- Make advk_pci_bridge_emul_ops static (Wei Yongjun)
- Configure MPS settings for VMD root ports (Jon Derrick)
* tag 'pci-v5.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (92 commits)
PCI: Update PCIEPORTBUS Kconfig help text
PCI: Fix "try" semantics of bus and slot reset
PCI/LINK: Report degraded links via link bandwidth notification
dt-bindings: PCI: altera: Add altr,pcie-root-port-2.0
PCI: altera: Enable driver on ARM64
PCI: altera: Add Stratix 10 PCIe support
PCI/PME: Fix possible use-after-free on remove
PCI: aardvark: Make symbol 'advk_pci_bridge_emul_ops' static
PCI: dwc: skip MSI init if MSIs have been explicitly disabled
PCI: hv: Refactor hv_irq_unmask() to use cpumask_to_vpset()
PCI: hv: Replace hv_vp_set with hv_vpset
PCI: hv: Add __aligned(8) to struct retarget_msi_interrupt
PCI: mediatek: Enlarge PCIe2AHB window size to support 4GB DRAM
PCI: mediatek: Fix memory mapped IO range size computation
PCI: dwc: Remove superfluous shifting in definitions
PCI: dwc: Make use of GENMASK/FIELD_PREP
PCI: dwc: Make use of BIT() in constant definitions
PCI: dwc: Share code for dw_pcie_rd/wr_other_conf()
PCI: dwc: Make use of IS_ALIGNED()
PCI: imx6: Add code to request/control "pcie_aux" clock for i.MX8MQ
...
When building with -Wsometimes-uninitialized, Clang warns:
drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c:111:2: error: variable
'ns' is used uninitialized whenever 'if' condition is false
[-Werror,-Wsometimes-uninitialized]
drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c:111:2: error: variable
'ns' is used uninitialized whenever '&&' condition is false
[-Werror,-Wsometimes-uninitialized]
Clang is concerned with the use of stmmac_do_void_callback (which
stmmac_get_systime wraps), as it may fail to initialize these values if
the if condition was ever false (meaning the callback doesn't exist).
It's not wrong because the callback is what initializes ns. While it's
unlikely that the callback is going to disappear at some point and make
that condition false, we can easily avoid this warning by zero
initializing the variable.
Link: https://github.com/ClangBuiltLinux/linux/issues/384
Fixes: df10317085 ("net: stmmac: Avoid sometimes uninitialized Clang warnings")
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
By default, the switch driver is expected to configure CPU and DSA
ports to their maximum speed. For the 6341 and 6390 families, the
ports interface mode has to be configured as well. The 6390X range
support 10G ports using XAUI, while the 6341 and 6390 supports
2500BaseX, as their maximum speed.
Fixes: 787799a9d5 ("net: dsa: mv88e6xxx: Default ports 9/10 6390X CMODE to 1000BaseX")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
When building with -Wsometimes-uninitialized, Clang warns:
drivers/net/ethernet/sun/niu.c:7466:5: warning: variable 'class' is used
uninitialized whenever switch default is taken
[-Wsometimes-uninitialized]
The default case can never happen because i can only be 0 to 3
(NIU_L3_PROG_CLS is defined as 4). To make this clear to Clang,
just zero initialize class in the default case (use the macro
CLASS_CODE_UNRECOG to make it clear this shouldn't happen).
Link: https://github.com/ClangBuiltLinux/linux/issues/403
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
