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All Marvell switches supported by mv88e6xxx have to set their device
number in the Global Control 2 register. Extract this in a read then
write function, called from the device mapping setup code.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Only the 88E6185 family has bits 15:12 Cascade Port bits in the Global
Control 2 register. Hence inconsistent values are actually written in
this register for other families.
Add a .set_cascade_port operation to isolate the 88E6185 case, and call
it from the device mapping setup function.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add check of coalescing parameters received through ethtool are within
range of values supported by the HW.
Driver gets the coalescing rx/tx-usecs and rx/tx-frames as set by the
users through ethtool. The ethtool support up to 32 bit value for each.
However, mlx4 modify cq limits the coalescing time parameter and
coalescing frames parameters to 16 bits.
Return out of range error if user tries to set these parameters to
higher values.
Change type of sample-interval and adaptive_rx_coal parameters in mlx4
driver to u32 as the ethtool holds them as u32 and these parameters are
not limited due to mlx4 HW.
Fixes: c27a02cd94d6 ('mlx4_en: Add driver for Mellanox ConnectX 10GbE NIC')
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Tariq Toukan says:
====================
mlx4_core misc for 4.18
This patchset contains misc enhancements from the team
to the mlx4 Core driver.
Patch 1 by Eran adds driver version report in FW.
Patch 2 by Yishai implements suspend/resume PCI callbacks.
Patch 3 extends the range of an existing module param from boolean to numerical.
Series generated against net-next commit:
53a7bdfb2a27 dt-bindings: dsa: Remove unnecessary #address/#size-cells
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Extend the boolean interpretation of msi_x module parameter
to numerical, as follows:
0 - Don't use MSI-X.
1 - Use MSI-X, driver decides the num of MSI-X irqs.
>=2 - Use MSI-X, limit number of MSI-X irqs to msi_x.
In SRIOV, this limits the number of MSI-X irqs per VF.
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Cc: Ajaykumar Hotchandani <ajaykumar.hotchandani@oracle.com>
Reviewed-by: Ajaykumar Hotchandani <ajaykumar.hotchandani@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Implement suspend/resume callbacks in struct pci_driver.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If supported, write a driver version string to FW as part of the
INIT_HCA command.
Example of driver version: "Linux,mlx4_core,4.0-0"
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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copy mbox size to adapter instances of PF0-3 to avoid
mbox log overflow. This fixes the possible protection
fault.
Fixes: baf5086840ab ("cxgb4: restructure VF mgmt code")
Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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firmware expects HMA memory to be zeroed, use __GFP_ZERO
for HMA memory allocation.
Fixes: 8b4e6b3ca2ed ("cxgb4: Add HMA support")
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Damir reported a breakage of SO_BINDTODEVICE for UDP sockets.
In absence of VRF devices, after commit fb74c27735f0 ("net:
ipv4: add second dif to udp socket lookups") the dif mismatch
isn't fatal anymore for UDP socket lookup with non null
sk_bound_dev_if, breaking SO_BINDTODEVICE semantics.
This changeset addresses the issue making the dif match mandatory
again in the above scenario.
Reported-by: Damir Mansurov <dnman@oktetlabs.ru>
Fixes: fb74c27735f0 ("net: ipv4: add second dif to udp socket lookups")
Fixes: 1801b570dd2a ("net: ipv6: add second dif to udp socket lookups")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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After route cache is flushed via ipv4_sysctl_rtcache_flush(), we forget
to reset fnhe_mtu_locked in rt_bind_exception(). When pmtu is updated
in __ip_rt_update_pmtu(), it will return directly since the pmtu is
still locked. e.g.
+ ip netns exec client ping 10.10.1.1 -c 1 -s 1400 -M do
PING 10.10.1.1 (10.10.1.1) 1400(1428) bytes of data.
>From 10.10.0.254 icmp_seq=1 Frag needed and DF set (mtu = 0)
Signed-off-by: David S. Miller <davem@davemloft.net>
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On older windows hosts the net_device instance is returned to
the caller of rndis_filter_device_add() without having the presence
bit set first. This would cause any subsequent calls to network device
operations (e.g. MTU change, channel change) to fail after the device
is detached once, returning -ENODEV.
Instead of returning the device instabce, we take the exit path where
we call netif_device_attach()
Fixes: 7b2ee50c0cd5 ("hv_netvsc: common detach logic")
Signed-off-by: Mohammed Gamal <mgamal@redhat.com>
Reviewed-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since commit 29a5dcae2790 ("nfp: flower: offload phys port MTU change") we
take encapsulation headroom into account when calculating the max allowed
MTU. This is unnecessary as the max MTU advertised by firmware should have
already accounted for encap headroom.
Subtracting headroom twice brings the max MTU below what's necessary for
some deployments.
Fixes: 29a5dcae2790 ("nfp: flower: offload phys port MTU change")
Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 161d82de1ff8 ("net: bridge: Notify about !added_by_user FDB
entries") causes the below oops when bringing up a slave interface,
because dsa_port_fdb_add is still scheduled, but with a NULL address.
To fix this, keep the dsa_slave_switchdev_event function agnostic of the
notified info structure and handle the added_by_user flag in the
specific dsa_slave_switchdev_event_work function.
[ 75.512263] Unable to handle kernel NULL pointer dereference at virtual address 00000000
[ 75.519063] pgd = (ptrval)
[ 75.520545] [00000000] *pgd=00000000
[ 75.522839] Internal error: Oops: 17 [#1] ARM
[ 75.525898] Modules linked in:
[ 75.527673] CPU: 0 PID: 9 Comm: kworker/u2:1 Not tainted 4.17.0-rc2 #78
[ 75.532988] Hardware name: Freescale Vybrid VF5xx/VF6xx (Device Tree)
[ 75.538153] Workqueue: dsa_ordered dsa_slave_switchdev_event_work
[ 75.542970] PC is at mv88e6xxx_port_db_load_purge+0x60/0x1b0
[ 75.547341] LR is at mdiobus_read_nested+0x6c/0x78
[ 75.550833] pc : [<804cd5c0>] lr : [<804bba84>] psr: 60070013
[ 75.555796] sp : 9f54bd78 ip : 9f54bd87 fp : 9f54bddc
[ 75.559719] r10: 00000000 r9 : 0000000e r8 : 9f6a6010
[ 75.563643] r7 : 00000000 r6 : 81203048 r5 : 9f6a6010 r4 : 9f6a601c
[ 75.568867] r3 : 00000000 r2 : 00000000 r1 : 0000000d r0 : 00000000
[ 75.574094] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
[ 75.579933] Control: 10c53c7d Table: 9de20059 DAC: 00000051
[ 75.584384] Process kworker/u2:1 (pid: 9, stack limit = 0x(ptrval))
[ 75.589349] Stack: (0x9f54bd78 to 0x9f54c000)
[ 75.592406] bd60: 00000000 00000000
[ 75.599295] bd80: 00000391 9f299d10 9f299d68 8014317c 9f7f0000 8120af00 00006dc2 00000000
[ 75.606186] bda0: 8120af00 00000000 9f54bdec 1c9f5d92 8014317c 9f6a601c 9f6a6010 00000000
[ 75.613076] bdc0: 00000000 00000000 9dd1141c 8125a0b4 9f54be0c 9f54bde0 804cd8a8 804cd56c
[ 75.619966] bde0: 0000000e 80143680 00000001 9dce9c1c 81203048 9dce9c10 00000003 00000000
[ 75.626858] be00: 9f54be5c 9f54be10 806abcac 804cd864 9f54be54 80143664 8014317c 80143054
[ 75.633748] be20: ffcaa81d 00000000 812030b0 1c9f5d92 00000000 81203048 9f54beb4 00000003
[ 75.640639] be40: ffffffff 00000000 9dd1141c 8125a0b4 9f54be84 9f54be60 80138e98 806abb18
[ 75.647529] be60: 81203048 9ddc4000 9dce9c54 9f72a300 00000000 00000000 9f54be9c 9f54be88
[ 75.654420] be80: 801390bc 80138e50 00000000 9dce9c54 9f54beac 9f54bea0 806a9524 801390a0
[ 75.661310] bea0: 9f54bedc 9f54beb0 806a9c7c 806a950c 9f54becc 00000000 00000000 00000000
[ 75.668201] bec0: 9f540000 1c9f5d92 805fe604 9ddffc00 9f54befc 9f54bee0 806ab228 806a9c38
[ 75.675092] bee0: 806ab178 9ddffc00 9f4c1900 9f40d200 9f54bf34 9f54bf00 80131e30 806ab184
[ 75.681983] bf00: 9f40d214 9f54a038 9f40d200 9f40d200 9f4c1918 812119a0 9f40d214 9f54a038
[ 75.688873] bf20: 9f40d200 9f4c1900 9f54bf7c 9f54bf38 80132124 80131d1c 9f5f2dd8 00000000
[ 75.695764] bf40: 812119a0 9f54a038 812119a0 81259c5b 9f5f2dd8 9f5f2dc0 9f53dbc0 00000000
[ 75.702655] bf60: 9f4c1900 801320b4 9f5f2dd8 9f4f7e88 9f54bfac 9f54bf80 80137ad0 801320c0
[ 75.709544] bf80: 9f54a000 9f53dbc0 801379a0 00000000 00000000 00000000 00000000 00000000
[ 75.716434] bfa0: 00000000 9f54bfb0 801010e8 801379ac 00000000 00000000 00000000 00000000
[ 75.723324] bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 75.730206] bfe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
[ 75.737083] Backtrace:
[ 75.738252] [<804cd560>] (mv88e6xxx_port_db_load_purge) from [<804cd8a8>] (mv88e6xxx_port_fdb_add+0x50/0x68)
[ 75.746795] r10:8125a0b4 r9:9dd1141c r8:00000000 r7:00000000 r6:00000000 r5:9f6a6010
[ 75.753323] r4:9f6a601c
[ 75.754570] [<804cd858>] (mv88e6xxx_port_fdb_add) from [<806abcac>] (dsa_switch_event+0x1a0/0x660)
[ 75.762238] r8:00000000 r7:00000003 r6:9dce9c10 r5:81203048 r4:9dce9c1c
[ 75.767655] [<806abb0c>] (dsa_switch_event) from [<80138e98>] (notifier_call_chain+0x54/0x94)
[ 75.774893] r10:8125a0b4 r9:9dd1141c r8:00000000 r7:ffffffff r6:00000003 r5:9f54beb4
[ 75.781423] r4:81203048
[ 75.782672] [<80138e44>] (notifier_call_chain) from [<801390bc>] (raw_notifier_call_chain+0x28/0x30)
[ 75.790514] r9:00000000 r8:00000000 r7:9f72a300 r6:9dce9c54 r5:9ddc4000 r4:81203048
[ 75.796982] [<80139094>] (raw_notifier_call_chain) from [<806a9524>] (dsa_port_notify+0x24/0x38)
[ 75.804483] [<806a9500>] (dsa_port_notify) from [<806a9c7c>] (dsa_port_fdb_add+0x50/0x6c)
[ 75.811371] [<806a9c2c>] (dsa_port_fdb_add) from [<806ab228>] (dsa_slave_switchdev_event_work+0xb0/0x10c)
[ 75.819635] r4:9ddffc00
[ 75.820885] [<806ab178>] (dsa_slave_switchdev_event_work) from [<80131e30>] (process_one_work+0x120/0x3a4)
[ 75.829241] r6:9f40d200 r5:9f4c1900 r4:9ddffc00 r3:806ab178
[ 75.833612] [<80131d10>] (process_one_work) from [<80132124>] (worker_thread+0x70/0x574)
[ 75.840415] r10:9f4c1900 r9:9f40d200 r8:9f54a038 r7:9f40d214 r6:812119a0 r5:9f4c1918
[ 75.846945] r4:9f40d200
[ 75.848191] [<801320b4>] (worker_thread) from [<80137ad0>] (kthread+0x130/0x160)
[ 75.854300] r10:9f4f7e88 r9:9f5f2dd8 r8:801320b4 r7:9f4c1900 r6:00000000 r5:9f53dbc0
[ 75.860830] r4:9f5f2dc0
[ 75.862076] [<801379a0>] (kthread) from [<801010e8>] (ret_from_fork+0x14/0x2c)
[ 75.867999] Exception stack(0x9f54bfb0 to 0x9f54bff8)
[ 75.871753] bfa0: 00000000 00000000 00000000 00000000
[ 75.878640] bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 75.885519] bfe0: 00000000 00000000 00000000 00000000 00000013 00000000
[ 75.890844] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:801379a0
[ 75.897377] r4:9f53dbc0 r3:9f54a000
[ 75.899663] Code: e3a02000 e3a03000 e14b26f4 e24bc055 (e5973000)
[ 75.904575] ---[ end trace fbca818a124dbf0d ]---
Fixes: 816a3bed9549 ("switchdev: Add fdb.added_by_user to switchdev notifications")
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In commit be47e41d77fb ("tipc: fix use-after-free in tipc_nametbl_stop")
we fixed a problem caused by premature release of service range items.
That fix is correct, and solved the problem. However, it doesn't address
the root of the problem, which is that we don't lookup the tipc_service
-> service_range -> publication items in the correct hierarchical
order.
In this commit we try to make this right, and as a side effect obtain
some code simplification.
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Trivial fix to spelling mistake in dev_warn message text
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Trivial fix to spelling mistake in error string
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Trivial fix to spelling mistake in res_strings string array
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Michal Kalderon says:
====================
qed*: Rdma fixes
This patch series include two fixes for bugs related to rdma.
The first has to do with loading the driver over an iWARP
device.
The second fixes a previous commit that added proper link
indication for iWARP / RoCE.
====================
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Sudarsana Kalluru <Sudarsana.Kalluru@cavium.com>
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A previous commit 4609adc27175 ("qede: Fix qedr link update")
added a flow that could allocate rdma event objects from an
interrupt path (link notification). Therefore the kzalloc call
should be done with GFP_ATOMIC.
fixes: 4609adc27175 ("qede: Fix qedr link update")
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Sudarsana Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If qede driver was loaded on a device configured for iWARP
the l2 mutex wouldn't be allocated, and some l2 related
resources wouldn't be freed.
fixes: c851a9dc4359 ("qed: Introduce iWARP personality")
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Sudarsana Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since net ns of tun device is assigned on the device creation,
and it never changes, we do not need to use any lock to get it
from alive tun.
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Davidlohr Bueso says:
====================
net: Update static keys to modern api
The following patches update pretty much all core net static key users
to the modern api. Changes are mostly trivial conversion without affecting
any semantics. The motivation is a resend of patches 1 and 2 from a while[1]
back, and the rest are added patches, specific for -net.
Applies against today's linux-next. Compile tested only.
[1] lkml.kernel.org/r/20180326210929.5244-1-dave@stgolabs.net
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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No changes in refcount semantics -- key init is false; replace
static_key_enable with static_branch_enable
static_key_slow_inc|dec with static_branch_inc|dec
static_key_false with static_branch_unlikely
Added a '_key' suffix to udp and udpv6 encap_needed, for better
self documentation.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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No changes in refcount semantics -- key init is false; replace
static_key_slow_inc|dec with static_branch_inc|dec
static_key_false with static_branch_unlikely
Added a '_key' suffix to generic_xdp_needed, for better self
documentation.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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No changes in refcount semantics -- key init is false; replace
static_key_slow_inc|dec with static_branch_inc|dec
static_key_false with static_branch_unlikely
Added a '_key' suffix to netstamp_needed, for better self
documentation.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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No changes in semantics -- key init is false; replace
static_key_slow_inc|dec with static_branch_inc|dec
static_key_false with static_branch_unlikely
Added a '_key' suffix to both ingress_needed and egress_needed,
for better self documentation.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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No changes in refcount semantics -- key init is false; replace
static_key_slow_inc|dec with static_branch_inc|dec
static_key_false with static_branch_unlikely
Added a '_key' suffix to memalloc_socks, for better self
documentation.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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No changes in refcount semantics -- key init is false; replace
static_key_slow_inc|dec with static_branch_inc|dec
static_key_false with static_branch_unlikely
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- a stable fix for DM integrity to use kvfree
- fix for a 4.17-rc1 change to dm-bufio's buffer alignment
- fixes for a few sparse warnings
- remove VLA usage in DM mirror target
- improve DM thinp Documentation for the "read_only" feature
* tag 'for-4.17/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm thin: update Documentation to clarify when "read_only" is valid
dm mirror: remove VLA usage
dm: fix some sparse warnings and whitespace in dax methods
dm cache background tracker: fix sparse warning
dm bufio: fix buffer alignment
dm integrity: use kvfree for kvmalloc'd memory
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The 88E6141/6341 switches (also known as Topaz) have 1 SGMII lane,
which can be configured the same way as the SERDES lane on 88E6390.
Signed-off-by: Marek Behun <marek.behun@nic.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This adds support for U32 filter by using an HW only feature called
Flexible RX Parser. This allow us to match any given packet field with a
pattern and accept/reject or even route the packet to a specific DMA
channel.
Right now we only support acception or rejection of frame and we only
support simple rules. Though, the Parser has the flexibility of jumping to
specific rules as an if condition so complex rules can be established.
This is only supported in GMAC5.10+.
The following commands can be used to test this code:
1) Setup an ingress qdisk:
# tc qdisc add dev eth0 handle ffff: ingress
2) Setup a filter (e.g. filter by IP):
# tc filter add dev eth0 parent ffff: protocol ip u32 match ip \
src 192.168.0.3 skip_sw action drop
In every tests performed we always used the "skip_sw" flag to make sure
only the RX Parser was involved.
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Vitor Soares <soares@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jakub Kicinski <kubakici@wp.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds support of hardware rx-vlan-offload to VF driver.
VF uses mailbox to convey PF to configure the hardware.
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add driver for Microchip LAN87XX T1 PHYs
This patch support driver for Microchp T1 PHYs.
There will be followup patches to this driver to support T1 PHY
features such as cable diagnostics, signal quality indicator(SQI),
sleep and wakeup (TC10) support.
Signed-off-by: Nisar Sayed <Nisar.Sayed@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When sending packets as fast as possible using "cangen -g 0 -i -x", the
HI-3110 occasionally latches the interrupt pin high on completion of a
packet, but doesn't set the TXCPLT bit in the INTF register. The INTF
register contains 0x00 as if no interrupt has occurred. Even waiting
for a few milliseconds after the interrupt doesn't help.
Work around this apparent erratum by instead checking the TXMTY bit in
the STATF register ("TX FIFO empty"). We know that we've queued up a
packet for transmission if priv->tx_len is nonzero. If the TX FIFO is
empty, transmission of that packet must have completed.
Note that this is congruent with our handling of received packets, which
likewise gleans from the STATF register whether a packet is waiting in
the RX FIFO, instead of looking at the INTF register.
Cc: Mathias Duckeck <m.duckeck@kunbus.de>
Cc: Akshay Bhat <akshay.bhat@timesys.com>
Cc: Casey Fitzpatrick <casey.fitzpatrick@timesys.com>
Cc: stable@vger.kernel.org # v4.12+
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Acked-by: Akshay Bhat <akshay.bhat@timesys.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
|
|
hi3110_get_berr_counter() may run concurrently to the rest of the driver
but neglects to acquire the lock protecting access to the SPI device.
As a result, it and the rest of the driver may clobber each other's tx
and rx buffers.
We became aware of this issue because transmission of packets with
"cangen -g 0 -i -x" frequently hung. It turns out that agetty executes
->do_get_berr_counter every few seconds via the following call stack:
CPU: 2 PID: 1605 Comm: agetty
[<7f3f7500>] (hi3110_get_berr_counter [hi311x])
[<7f130204>] (can_fill_info [can_dev])
[<80693bc0>] (rtnl_fill_ifinfo)
[<806949ec>] (rtnl_dump_ifinfo)
[<806b4834>] (netlink_dump)
[<806b4bc8>] (netlink_recvmsg)
[<8065f180>] (sock_recvmsg)
[<80660f90>] (___sys_recvmsg)
[<80661e7c>] (__sys_recvmsg)
[<80661ec0>] (SyS_recvmsg)
[<80108b20>] (ret_fast_syscall+0x0/0x1c)
agetty listens to netlink messages in order to update the login prompt
when IP addresses change (if /etc/issue contains \4 or \6 escape codes):
https://git.kernel.org/pub/scm/utils/util-linux/util-linux.git/commit/?id=e36deb6424e8
It's a useful feature, though it seems questionable that it causes CAN
bit error statistics to be queried.
Be that as it may, if hi3110_get_berr_counter() is invoked while a frame
is sent by hi3110_hw_tx(), bogus SPI transfers like the following may
occur:
=> 12 00 (hi3110_get_berr_counter() wanted to transmit
EC 00 to query the transmit error counter,
but the first byte was overwritten by
hi3110_hw_tx_frame())
=> EA 00 3E 80 01 FB (hi3110_hw_tx_frame() wanted to transmit a
frame, but the first byte was overwritten by
hi3110_get_berr_counter() because it wanted
to query the receive error counter)
This sequence hangs the transmission because the driver believes it has
sent a frame and waits for the interrupt signaling completion, but in
reality the chip has never sent away the frame since the commands it
received were malformed.
Fix by acquiring the SPI lock in hi3110_get_berr_counter().
I've scrutinized the entire driver for further unlocked SPI accesses but
found no others.
Cc: Mathias Duckeck <m.duckeck@kunbus.de>
Cc: Akshay Bhat <akshay.bhat@timesys.com>
Cc: Casey Fitzpatrick <casey.fitzpatrick@timesys.com>
Cc: Stef Walter <stefw@redhat.com>
Cc: Karel Zak <kzak@redhat.com>
Cc: stable@vger.kernel.org # v4.12+
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Reviewed-by: Akshay Bhat <akshay.bhat@timesys.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
|
|
Due to user confusion, clarify that it doesn't make sense to try to
create a thin-pool with "read_only" mode enabled.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
|
|
Commit 0847684cfc5f0 (PCI / PM: Simplify device wakeup settings code)
went too far and dropped the device_may_wakeup() check from
pci_enable_wake() which causes wakeup to be enabled during system
suspend, hibernation or shutdown for some PCI devices that are not
allowed by user space to wake up the system from sleep (or power off).
As a result of this, excessive power is drawn by some of the affected
systems while in sleep states or off.
Restore the device_may_wakeup() check in pci_enable_wake(), but make
sure that the PCI bus type's runtime suspend callback will not call
device_may_wakeup() which is about system wakeup from sleep and not
about device wakeup from runtime suspend.
Fixes: 0847684cfc5f0 (PCI / PM: Simplify device wakeup settings code)
Reported-by: Joseph Salisbury <joseph.salisbury@canonical.com>
Cc: 4.13+ <stable@vger.kernel.org> # 4.13+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
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The performance drop if the default TDP more than 256 Watt
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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When we get link properties through netlink interface with
tipc_nl_node_get_link(), we don't validate TIPC_NLA_LINK_NAME
attribute at all, instead we directly use it. As a consequence,
KMSAN detected the TIPC_NLA_LINK_NAME attribute was an uninitialized
value, and then posted the following complaint:
==================================================================
BUG: KMSAN: uninit-value in strcmp+0xf7/0x160 lib/string.c:329
CPU: 1 PID: 4527 Comm: syz-executor655 Not tainted 4.16.0+ #87
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x185/0x1d0 lib/dump_stack.c:53
kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
__msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:683
strcmp+0xf7/0x160 lib/string.c:329
tipc_nl_node_get_link+0x220/0x6f0 net/tipc/node.c:1881
genl_family_rcv_msg net/netlink/genetlink.c:599 [inline]
genl_rcv_msg+0x1686/0x1810 net/netlink/genetlink.c:624
netlink_rcv_skb+0x378/0x600 net/netlink/af_netlink.c:2447
genl_rcv+0x63/0x80 net/netlink/genetlink.c:635
netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
netlink_unicast+0x166b/0x1740 net/netlink/af_netlink.c:1337
netlink_sendmsg+0x1048/0x1310 net/netlink/af_netlink.c:1900
sock_sendmsg_nosec net/socket.c:630 [inline]
sock_sendmsg net/socket.c:640 [inline]
___sys_sendmsg+0xec0/0x1310 net/socket.c:2046
__sys_sendmsg net/socket.c:2080 [inline]
SYSC_sendmsg+0x2a3/0x3d0 net/socket.c:2091
SyS_sendmsg+0x54/0x80 net/socket.c:2087
do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x445589
RSP: 002b:00007fb7ee66cdb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000445589
RDX: 0000000000000000 RSI: 0000000020023000 RDI: 0000000000000003
RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffa2bf3f3f R14: 00007fb7ee66d9c0 R15: 0000000000000001
Uninit was created at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
kmsan_internal_poison_shadow+0xb8/0x1b0 mm/kmsan/kmsan.c:188
kmsan_kmalloc+0x94/0x100 mm/kmsan/kmsan.c:314
kmsan_slab_alloc+0x11/0x20 mm/kmsan/kmsan.c:321
slab_post_alloc_hook mm/slab.h:445 [inline]
slab_alloc_node mm/slub.c:2737 [inline]
__kmalloc_node_track_caller+0xaed/0x11c0 mm/slub.c:4369
__kmalloc_reserve net/core/skbuff.c:138 [inline]
__alloc_skb+0x2cf/0x9f0 net/core/skbuff.c:206
alloc_skb include/linux/skbuff.h:984 [inline]
netlink_alloc_large_skb net/netlink/af_netlink.c:1183 [inline]
netlink_sendmsg+0x9a6/0x1310 net/netlink/af_netlink.c:1875
sock_sendmsg_nosec net/socket.c:630 [inline]
sock_sendmsg net/socket.c:640 [inline]
___sys_sendmsg+0xec0/0x1310 net/socket.c:2046
__sys_sendmsg net/socket.c:2080 [inline]
SYSC_sendmsg+0x2a3/0x3d0 net/socket.c:2091
SyS_sendmsg+0x54/0x80 net/socket.c:2087
do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
==================================================================
To quiet the complaint, TIPC_NLA_LINK_NAME attribute has been
validated in tipc_nl_node_get_link() before it's used.
Reported-by: syzbot+df0257c92ffd4fcc58cd@syzkaller.appspotmail.com
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There are follow comment errors:
1 The function name is wrong in p9_release_pages() comment.
2 The function name and variable name is wrong in p9_poll_workfn() comment.
3 There is no variable dm_mr and lkey in struct p9_trans_rdma.
4 The function name is wrong in rdma_create_trans() comment.
5 There is no variable initialized in struct virtio_chan.
6 The variable name is wrong in p9_virtio_zc_request() comment.
Signed-off-by: Sun Lianwen <sunlw.fnst@cn.fujitsu.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux
Saeed Mahameed says:
====================
mlx5-updates-2018-05-07
mlx5 core driver misc cleanups and updates:
- fix spelling mistake: "modfiy" -> "modify"
- Cleanup unused field in Work Queue parameters
- dump_command mailbox length printed
- Refactor num of blocks in mailbox calculation
- Decrease level of prints about non-existent MKEY
- remove some extraneous spaces in indentations
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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dio_get_pagev_size() and dio_get_pages_alloc() introduced in commit
b5b98989dc7e ("ceph: combine as many iovec as possile into one OSD
request") assume that the passed iov_iter is ITER_IOVEC. This isn't
the case with splice where it ends up poking into the guts of ITER_BVEC
or ITER_PIPE iterators, causing lockups and crashes easily reproduced
with generic/095.
Rather than trying to figure out gap alignment and stuff pages into
a page vector, add a helper for going from iov_iter to a bio_vec array
and make use of the new CEPH_OSD_DATA_TYPE_BVECS code.
Fixes: b5b98989dc7e ("ceph: combine as many iovec as possile into one OSD request")
Link: http://tracker.ceph.com/issues/18130
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Tested-by: Luis Henriques <lhenriques@suse.com>
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|
... and store num_bvecs for client code's convenience.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
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rsize/wsize cap should be applied before ceph_osdc_new_request() is
called. Otherwise, if the size is limited by the cap instead of the
stripe unit, ceph_osdc_new_request() would setup an extent op that is
bigger than what dio_get_pages_alloc() would pin and add to the page
vector, triggering asserts in the messenger.
Cc: stable@vger.kernel.org
Fixes: 95cca2b44e54 ("ceph: limit osd write size")
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
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|
NAND chips require a bit of time to take the NAND operation into
account and set the BUSY bit in the STATUS reg. Make sure we don't poll
the STATUS reg too early in nand_soft_waitrdy().
Fixes: 8878b126df76 ("mtd: nand: add ->exec_op() implementation")
Cc: <stable@vger.kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Miquel Raynal <miquel.raynal@bootlin.com>
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Two nouveau crasher/deadlock fixes.
* 'linux-4.17' of git://github.com/skeggsb/linux:
drm/nouveau: Fix deadlock in nv50_mstm_register_connector()
drm/nouveau/ttm: don't dereference nvbo::cli, it can outlive client
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|
Currently; we're grabbing all of the modesetting locks before adding MST
connectors to fbdev. This isn't actually necessary, and causes a
deadlock as well:
======================================================
WARNING: possible circular locking dependency detected
4.17.0-rc3Lyude-Test+ #1 Tainted: G O
------------------------------------------------------
kworker/1:0/18 is trying to acquire lock:
00000000c832f62d (&helper->lock){+.+.}, at: drm_fb_helper_add_one_connector+0x2a/0x60 [drm_kms_helper]
but task is already holding lock:
00000000942e28e2 (crtc_ww_class_mutex){+.+.}, at: drm_modeset_backoff+0x8e/0x1c0 [drm]
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (crtc_ww_class_mutex){+.+.}:
ww_mutex_lock+0x43/0x80
drm_modeset_lock+0x71/0x130 [drm]
drm_helper_probe_single_connector_modes+0x7d/0x6b0 [drm_kms_helper]
drm_setup_crtcs+0x15e/0xc90 [drm_kms_helper]
__drm_fb_helper_initial_config_and_unlock+0x29/0x480 [drm_kms_helper]
nouveau_fbcon_init+0x138/0x1a0 [nouveau]
nouveau_drm_load+0x173/0x7e0 [nouveau]
drm_dev_register+0x134/0x1c0 [drm]
drm_get_pci_dev+0x8e/0x160 [drm]
nouveau_drm_probe+0x1a9/0x230 [nouveau]
pci_device_probe+0xcd/0x150
driver_probe_device+0x30b/0x480
__driver_attach+0xbc/0xe0
bus_for_each_dev+0x67/0x90
bus_add_driver+0x164/0x260
driver_register+0x57/0xc0
do_one_initcall+0x4d/0x323
do_init_module+0x5b/0x1f8
load_module+0x20e5/0x2ac0
__do_sys_finit_module+0xb7/0xd0
do_syscall_64+0x60/0x1b0
entry_SYSCALL_64_after_hwframe+0x49/0xbe
-> #2 (crtc_ww_class_acquire){+.+.}:
drm_helper_probe_single_connector_modes+0x58/0x6b0 [drm_kms_helper]
drm_setup_crtcs+0x15e/0xc90 [drm_kms_helper]
__drm_fb_helper_initial_config_and_unlock+0x29/0x480 [drm_kms_helper]
nouveau_fbcon_init+0x138/0x1a0 [nouveau]
nouveau_drm_load+0x173/0x7e0 [nouveau]
drm_dev_register+0x134/0x1c0 [drm]
drm_get_pci_dev+0x8e/0x160 [drm]
nouveau_drm_probe+0x1a9/0x230 [nouveau]
pci_device_probe+0xcd/0x150
driver_probe_device+0x30b/0x480
__driver_attach+0xbc/0xe0
bus_for_each_dev+0x67/0x90
bus_add_driver+0x164/0x260
driver_register+0x57/0xc0
do_one_initcall+0x4d/0x323
do_init_module+0x5b/0x1f8
load_module+0x20e5/0x2ac0
__do_sys_finit_module+0xb7/0xd0
do_syscall_64+0x60/0x1b0
entry_SYSCALL_64_after_hwframe+0x49/0xbe
-> #1 (&dev->mode_config.mutex){+.+.}:
drm_setup_crtcs+0x10c/0xc90 [drm_kms_helper]
__drm_fb_helper_initial_config_and_unlock+0x29/0x480 [drm_kms_helper]
nouveau_fbcon_init+0x138/0x1a0 [nouveau]
nouveau_drm_load+0x173/0x7e0 [nouveau]
drm_dev_register+0x134/0x1c0 [drm]
drm_get_pci_dev+0x8e/0x160 [drm]
nouveau_drm_probe+0x1a9/0x230 [nouveau]
pci_device_probe+0xcd/0x150
driver_probe_device+0x30b/0x480
__driver_attach+0xbc/0xe0
bus_for_each_dev+0x67/0x90
bus_add_driver+0x164/0x260
driver_register+0x57/0xc0
do_one_initcall+0x4d/0x323
do_init_module+0x5b/0x1f8
load_module+0x20e5/0x2ac0
__do_sys_finit_module+0xb7/0xd0
do_syscall_64+0x60/0x1b0
entry_SYSCALL_64_after_hwframe+0x49/0xbe
-> #0 (&helper->lock){+.+.}:
__mutex_lock+0x70/0x9d0
drm_fb_helper_add_one_connector+0x2a/0x60 [drm_kms_helper]
nv50_mstm_register_connector+0x2c/0x50 [nouveau]
drm_dp_add_port+0x2f5/0x420 [drm_kms_helper]
drm_dp_send_link_address+0x155/0x1e0 [drm_kms_helper]
drm_dp_add_port+0x33f/0x420 [drm_kms_helper]
drm_dp_send_link_address+0x155/0x1e0 [drm_kms_helper]
drm_dp_check_and_send_link_address+0x87/0xd0 [drm_kms_helper]
drm_dp_mst_link_probe_work+0x4d/0x80 [drm_kms_helper]
process_one_work+0x20d/0x650
worker_thread+0x3a/0x390
kthread+0x11e/0x140
ret_from_fork+0x3a/0x50
other info that might help us debug this:
Chain exists of:
&helper->lock --> crtc_ww_class_acquire --> crtc_ww_class_mutex
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(crtc_ww_class_mutex);
lock(crtc_ww_class_acquire);
lock(crtc_ww_class_mutex);
lock(&helper->lock);
*** DEADLOCK ***
5 locks held by kworker/1:0/18:
#0: 000000004a05cd50 ((wq_completion)"events_long"){+.+.}, at: process_one_work+0x187/0x650
#1: 00000000601c11d1 ((work_completion)(&mgr->work)){+.+.}, at: process_one_work+0x187/0x650
#2: 00000000586ca0df (&dev->mode_config.mutex){+.+.}, at: drm_modeset_lock_all+0x3a/0x1b0 [drm]
#3: 00000000d3ca0ffa (crtc_ww_class_acquire){+.+.}, at: drm_modeset_lock_all+0x44/0x1b0 [drm]
#4: 00000000942e28e2 (crtc_ww_class_mutex){+.+.}, at: drm_modeset_backoff+0x8e/0x1c0 [drm]
stack backtrace:
CPU: 1 PID: 18 Comm: kworker/1:0 Tainted: G O 4.17.0-rc3Lyude-Test+ #1
Hardware name: Gateway FX6840/FX6840, BIOS P01-A3 05/17/2010
Workqueue: events_long drm_dp_mst_link_probe_work [drm_kms_helper]
Call Trace:
dump_stack+0x85/0xcb
print_circular_bug.isra.38+0x1ce/0x1db
__lock_acquire+0x128f/0x1350
? lock_acquire+0x9f/0x200
? lock_acquire+0x9f/0x200
? __ww_mutex_lock.constprop.13+0x8f/0x1000
lock_acquire+0x9f/0x200
? drm_fb_helper_add_one_connector+0x2a/0x60 [drm_kms_helper]
? drm_fb_helper_add_one_connector+0x2a/0x60 [drm_kms_helper]
__mutex_lock+0x70/0x9d0
? drm_fb_helper_add_one_connector+0x2a/0x60 [drm_kms_helper]
? ww_mutex_lock+0x43/0x80
? _cond_resched+0x15/0x30
? ww_mutex_lock+0x43/0x80
? drm_modeset_lock+0xb2/0x130 [drm]
? drm_fb_helper_add_one_connector+0x2a/0x60 [drm_kms_helper]
drm_fb_helper_add_one_connector+0x2a/0x60 [drm_kms_helper]
nv50_mstm_register_connector+0x2c/0x50 [nouveau]
drm_dp_add_port+0x2f5/0x420 [drm_kms_helper]
? mark_held_locks+0x50/0x80
? kfree+0xcf/0x2a0
? drm_dp_check_mstb_guid+0xd6/0x120 [drm_kms_helper]
? trace_hardirqs_on_caller+0xed/0x180
? drm_dp_check_mstb_guid+0xd6/0x120 [drm_kms_helper]
drm_dp_send_link_address+0x155/0x1e0 [drm_kms_helper]
drm_dp_add_port+0x33f/0x420 [drm_kms_helper]
? nouveau_connector_aux_xfer+0x7c/0xb0 [nouveau]
? find_held_lock+0x2d/0x90
? drm_dp_dpcd_access+0xd9/0xf0 [drm_kms_helper]
? __mutex_unlock_slowpath+0x3b/0x280
? drm_dp_dpcd_access+0xd9/0xf0 [drm_kms_helper]
drm_dp_send_link_address+0x155/0x1e0 [drm_kms_helper]
drm_dp_check_and_send_link_address+0x87/0xd0 [drm_kms_helper]
drm_dp_mst_link_probe_work+0x4d/0x80 [drm_kms_helper]
process_one_work+0x20d/0x650
worker_thread+0x3a/0x390
? process_one_work+0x650/0x650
kthread+0x11e/0x140
? kthread_create_worker_on_cpu+0x50/0x50
ret_from_fork+0x3a/0x50
Taking example from i915, the only time we need to hold any modesetting
locks is when changing the port on the mstc, and in that case we only
need to hold the connection mutex.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: Karol Herbst <kherbst@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
|
|
Potentially responsible for some random OOPSes.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Cc: stable@vger.kernel.org [v4.15+]
|
|
into drm-fixes
A little bigger than normal since this is two weeks of fixes.
- Atom firmware table updates for vega12
- Fix fallout from huge page support
- Fix up smu7 power profile interface to be consistent with vega
- Misc other fixes
* 'drm-fixes-4.17' of git://people.freedesktop.org/~agd5f/linux:
drm/amd/pp: Refine the output of pp_power_profile_mode on VI
drm/amdgpu: Switch to interruptable wait to recover from ring hang.
drm/ttm: Use GFP_TRANSHUGE_LIGHT for allocating huge pages
drm/amd/display: Use kvzalloc for potentially large allocations
drm/amd/display: Don't return ddc result and read_bytes in same return value
drm/amd/display: Add get_firmware_info_v3_2 for VG12
drm/amd: Add BIOS smu_info v3_3 required struct def.
drm/amd/display: Add VG12 ASIC IDs
|
