| Commit message (Collapse) | Author | Age | Files | Lines |
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As long as there is still a reference for a hard interface held, there might
still be a forwarding packet relying on its attributes.
Therefore avoid setting hard_iface->soft_iface to NULL when disabling a hard
interface.
This fixes the following, potential splat:
batman_adv: bat0: Interface deactivated: eth1
batman_adv: bat0: Removing interface: eth1
cgroup: new mount options do not match the existing superblock, will be ignored
batman_adv: bat0: Interface deactivated: eth3
batman_adv: bat0: Removing interface: eth3
------------[ cut here ]------------
WARNING: CPU: 3 PID: 1986 at ./net/batman-adv/bat_iv_ogm.c:549 batadv_iv_send_outstanding_bat_ogm_packet+0x145/0x643 [batman_adv]
Modules linked in: batman_adv(O-) <...>
CPU: 3 PID: 1986 Comm: kworker/u8:2 Tainted: G W O 4.6.0-rc6+ #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet [batman_adv]
0000000000000000 ffff88001d93bca0 ffffffff8126c26b 0000000000000000
0000000000000000 ffff88001d93bcf0 ffffffff81051615 ffff88001f19f818
000002251d93bd68 0000000000000046 ffff88001dc04a00 ffff88001becbe48
Call Trace:
[<ffffffff8126c26b>] dump_stack+0x67/0x90
[<ffffffff81051615>] __warn+0xc7/0xe5
[<ffffffff8105164b>] warn_slowpath_null+0x18/0x1a
[<ffffffffa0356f24>] batadv_iv_send_outstanding_bat_ogm_packet+0x145/0x643 [batman_adv]
[<ffffffff8108b01f>] ? __lock_is_held+0x32/0x54
[<ffffffff810689a2>] process_one_work+0x2a8/0x4f5
[<ffffffff81068856>] ? process_one_work+0x15c/0x4f5
[<ffffffff81068df2>] worker_thread+0x1d5/0x2c0
[<ffffffff81068c1d>] ? process_scheduled_works+0x2e/0x2e
[<ffffffff81068c1d>] ? process_scheduled_works+0x2e/0x2e
[<ffffffff8106dd90>] kthread+0xc0/0xc8
[<ffffffff8144de82>] ret_from_fork+0x22/0x40
[<ffffffff8106dcd0>] ? __init_kthread_worker+0x55/0x55
---[ end trace 647f9f325123dc05 ]---
What happened here is, that there was still a forw_packet (here: a BATMAN IV
OGM) in the queue of eth3 with the forw_packet->if_incoming set to eth1 and the
forw_packet->if_outgoing set to eth3.
When eth3 is to be deactivated and removed, then this thread waits for the
forw_packet queued on eth3 to finish. Because eth1 was deactivated and removed
earlier and by that had forw_packet->if_incoming->soft_iface, set to NULL, the
splat when trying to send/flush the OGM on eth3 occures.
Fixes: c6c8fea29769 ("net: Add batman-adv meshing protocol")
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
[sven@narfation.org: Reduced size of Oops message]
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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The BATADV_DBG_ALL has to contain the bit of BATADV_DBG_TP_METER to really
support all available debug messages.
Fixes: 33a3bb4a3345 ("batman-adv: throughput meter implementation")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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The batadv_hard_iface::neigh_list is accessed via rcu based primitives.
Thus all operations done on it have to fulfill the requirements by RCU. So
using non-RCU mechanisms like hlist_add_head is not allowed because it
misses the barriers required to protect concurrent readers when accessing
the data behind the pointer.
Fixes: cef63419f7db ("batman-adv: add list of unique single hop neighbors per hard-interface")
Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com>
Acked-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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This reverts commit e3f74b841d48
("hv_netvsc: report vmbus name in ethtool")'
because of problem introduced by commit f9a56e5d6a0ba
("Drivers: hv: make VMBus bus ids persistent").
This changed the format of the vmbus name and this new format is too
long to fit in the bus_info field of ethtool.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When transmitting on a packet socket with PACKET_VNET_HDR and
PACKET_QDISC_BYPASS, validate device support for features requested
in vnet_hdr.
Drop TSO packets sent to devices that do not support TSO or have the
feature disabled. Note that the latter currently do process those
packets correctly, regardless of not advertising the feature.
Because of SKB_GSO_DODGY, it is not sufficient to test device features
with netif_needs_gso. Full validate_xmit_skb is needed.
Switch to software checksum for non-TSO packets that request checksum
offload if that device feature is unsupported or disabled. Note that
similar to the TSO case, device drivers may perform checksum offload
correctly even when not advertising it.
When switching to software checksum, packets hit skb_checksum_help,
which has two BUG_ON checksum not in linear segment. Packet sockets
always allocate at least up to csum_start + csum_off + 2 as linear.
Tested by running github.com/wdebruij/kerneltools/psock_txring_vnet.c
ethtool -K eth0 tso off tx on
psock_txring_vnet -d $dst -s $src -i eth0 -l 2000 -n 1 -q -v
psock_txring_vnet -d $dst -s $src -i eth0 -l 2000 -n 1 -q -v -N
ethtool -K eth0 tx off
psock_txring_vnet -d $dst -s $src -i eth0 -l 1000 -n 1 -q -v -G
psock_txring_vnet -d $dst -s $src -i eth0 -l 1000 -n 1 -q -v -G -N
v2:
- add EXPORT_SYMBOL_GPL(validate_xmit_skb_list)
Fixes: d346a3fae3ff ("packet: introduce PACKET_QDISC_BYPASS socket option")
Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Use nla_parse_nested instead of open-coding the call to
nla_parse() with the attribute data/len.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fix to release resources properly in error handling path of
alloc_uld_rxqs(), This patch also removes unwanted arguments
and avoids calling the same function twice.
Fixes: 94cdb8bb993a (cxgb4: Add support for dynamic allocation
of resources for ULD
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is an old warning about mlx4_SW2HW_EQ_wrapper on x86:
ethernet/mellanox/mlx4/resource_tracker.c: In function ‘mlx4_SW2HW_EQ_wrapper’:
ethernet/mellanox/mlx4/resource_tracker.c:3071:10: error: ‘eq’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
The problem here is that gcc won't track the state of the variable
across a spin_unlock. Moving the assignment out of the lock is
safe here and avoids the warning.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch updates skb->protocol to ETH_P_IPV6 in ip6_tnl_xmit() when an
IPv6 header is installed to a socket buffer.
This is not a cosmetic change. Without updating this value, GSO packets
transmitted through an ipip6 tunnel have the protocol of ETH_P_IP and
skb_mac_gso_segment() will attempt to call gso_segment() for IPv4,
which results in the packets being dropped.
Fixes: b8921ca83eed ("ip4ip6: Support for GSO/GRO")
Signed-off-by: Eli Cooper <elicooper@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Some of the sample files are causing issues when they are loaded with tc
and cls_bpf, meaning tc bails out while trying to parse the resulting ELF
file as program/map/etc sections are not present, which can be easily
spotted with readelf(1).
Currently, BPF samples are including some of the kernel headers and mid
term we should change them to refrain from this, really. When dynamic
debugging is enabled, we bail out due to undeclared KBUILD_MODNAME, which
is easily overlooked in the build as clang spills this along with other
noisy warnings from various header includes, and llc still generates an
ELF file with mentioned characteristics. For just playing around with BPF
examples, this can be a bit of a hurdle to take.
Just add a fake KBUILD_MODNAME as a band-aid to fix the issue, same is
done in xdp*_kern samples already.
Fixes: 65d472fb007d ("samples/bpf: add 'pointer to packet' tests")
Fixes: 6afb1e28b859 ("samples/bpf: Add tunnel set/get tests.")
Fixes: a3f74617340b ("cgroup: bpf: Add an example to do cgroup checking in BPF")
Reported-by: Chandrasekar Kannan <ckannan@console.to>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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As part of a series to implement faster SO_REUSEPORT lookups,
commit 086c653f5862 ("sock: struct proto hash function may error")
added return values to protocol hash functions and
commit 496611d7b5ea ("inet: create IPv6-equivalent inet_hash function")
implemented a new hash function for IPv6. However, the latter does
not respect the former's convention.
This properly propagates the hash errors in the IPv6 case.
Fixes: 496611d7b5ea ("inet: create IPv6-equivalent inet_hash function")
Reported-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: Craig Gallek <kraig@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Saeed Mahameed says:
====================
Mellanox 100G mlx5 fixes 2016-10-25
This series contains some bug fixes for the mlx5 core and mlx5e driver.
From Daniel:
- Cache line size determination at runtime, instead of using
L1_CACHE_BYTES hard coded value, use cache_line_size()
- Always Query HCA caps after setting them even on reset flow
From Mohamad:
- Reorder netdev cleanup to uregister netdev before detaching it
for the kernel to not complain about open resources such as vlans
- Change the acl enable prototype to return status, for better error
resiliency
- Clear health sick bit when starting health poll after reset flow
- Fix race between PCI error handlers and health work
- PCI error recovery health care simulation, in case when the kernel
PCI error handlers are not triggered for some internal firmware errors
From Noa:
- Avoid passing dma address 0 to firmware when mapping system pages
to the firmware
From Paul: Some straight forward flow steering fixes
- Keep autogroups list ordered
- Fix autogroups groups num not decreasing
- Correctly initialize last use of flow counters
From Saeed:
- Choose the nearest LRO timeout to the wanted one
instead of blindly choosing "dev_cap.lro_timeout[2]"
This series has no conflict with the for-next pull request posted
earlier today ("Mellanox mlx5 core driver updates 2016-10-25").
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently the firmware can't work with a page with dma address 0.
Passing such an address to the firmware will cause the give_pages
command to fail.
To avoid this, in case we get a 0 dma address of a page from the
dma engine, we avoid passing it to FW by remapping to get an address
other than 0.
Fixes: bf0bf77f6519 ('mlx5: Support communicating arbitrary host...')
Signed-off-by: Noa Osherovich <noaos@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In case that the kernel PCI error handlers are not called, we will
trigger our own recovery flow.
The health work will give priority to the kernel pci error handlers to
recover the PCI by waiting for a small period, if the pci error handlers
are not triggered the manual recovery flow will be executed.
We don't save pci state in case of manual recovery because it will ruin the
pci configuration space and we will lose dma sync.
Fixes: 89d44f0a6c73 ('net/mlx5_core: Add pci error handlers to mlx5_core driver')
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently there is a race between the health care work and the kernel
pci error handlers because both of them detect the error, the first one
to be called will do the error handling.
There is a chance that health care will disable the pci after resuming
pci slot.
Also create a separate WQ because now we will have two types of health
works, one for the error detection and one for the recovery.
Fixes: 89d44f0a6c73 ('net/mlx5_core: Add pci error handlers to mlx5_core driver')
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The health sick status should be cleared when we start the health poll.
This is crucial for driver reload (unload + load) in order to behave
right in case of health issue.
Fixes: fd76ee4da55a ('net/mlx5_core: Fix internal error detection conditions')
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The Ingress/Egress ACL enable function may fail and it should return
status to its caller to avoid NULL pointer dereference.
Fixes: f942380c1239 ('net/mlx5: E-Switch, Vport ingress/egress ACLs rules for spoofchk')
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Detaching the netdev before unregistering it cause some netdev cleanup
ndos to fail because they check presence of the netdev, so we need to
unregister the netdev first.
Fixes: 26e59d8077a3 ('net/mlx5e: Implement mlx5e interface attach/detach callbacks')
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Instead of predicting the index of the wanted LRO timeout value from
hardware capabilities, look for the nearest LRO timeout value.
Fixes: 5c50368f3831 ('net/mlx5e: Light-weight netdev open/stop')
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently, last use timestamp is initialized to zero.
This is not the expected value by higher layers such as
when we do TC action offloading. To fix that, set it to
the current time, e.g when the counter/rule is offloaded.
This is the same behaviour of non-offloaded TC actions.
Fixes: 43a335e055bb ('mlx5_core: Flow counters infrastructure')
Signed-off-by: Paul Blakey <paulb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Autogroups groups num is increased when creating a new flow group,
but is never decreased.
Now decreasing it when deleting a flow group.
Fixes: f0d22d187473 ('net/mlx5_core: Introduce flow steering autogrouped flow table')
Signed-off-by: Paul Blakey <paulb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Finding a new autogroup range is done by going over a group list
sorted by each group start index. The search is stopped after finding
the first free range. Adding the newly created group to the list is
wrongly added to the end of the list regardless of its start index as
the parameter of where to insert it is ignored.
This commit makes sure to use that unused parameter to insert
it where requested.
Fixes: f0d22d187473 ('net/mlx5_core: Introduce flow steering autogrouped flow table')
Signed-off-by: Paul Blakey <paulb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Always query the HCA caps after setting them to update the capablities
data structures. Not doing so results in incorrect capabilities being
reported including max_dc, max_qp and several others.
Fixes: 59211bd3b632 ("net/mlx5: Split the load/unload flow into hardware
and software flows")
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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ARM 64B cache line systems have L1_CACHE_BYTES set to 128.
cache_line_size() will return the correct size.
Fixes: cf50b5efa2fe('net/mlx5_core/ib: New device capabilities
handling.')
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Andrey Konovalov reported that KASAN detected that SCTP was using a slab
beyond the boundaries. It was caused because when handling out of the
blue packets in function sctp_sf_ootb() it was checking the chunk len
only after already processing the first chunk, validating only for the
2nd and subsequent ones.
The fix is to just move the check upwards so it's also validated for the
1st chunk.
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Jiri Pirko says:
====================
mlxsw: Couple of fixes
Couple of LPM tree management fixes.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Only trees which are in use should be compared to requested prefix usage.
Fixes: 53342023eed9 ("mlxsw: spectrum_router: Implement LPM trees management")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently, the prefix bitlist is not saved for LPM trees, causing the
compare to always fail which causes the tree to be destroyed and created
for every inserted and removed FIB entry. So fix this by saving
the bitlist as it should have been done from the very beginning.
Fixes: 53342023eed9 ("mlxsw: spectrum_router: Implement LPM trees management")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Daniel says:
While trying out [1][2], I noticed that tc monitor doesn't show the
correct handle on delete:
$ tc monitor
qdisc clsact ffff: dev eno1 parent ffff:fff1
filter dev eno1 ingress protocol all pref 49152 bpf handle 0x2a [...]
deleted filter dev eno1 ingress protocol all pref 49152 bpf handle 0xf3be0c80
some context to explain the above:
The user identity of any tc filter is represented by a 32-bit
identifier encoded in tcm->tcm_handle. Example 0x2a in the bpf filter
above. A user wishing to delete, get or even modify a specific filter
uses this handle to reference it.
Every classifier is free to provide its own semantics for the 32 bit handle.
Example: classifiers like u32 use schemes like 800:1:801 to describe
the semantics of their filters represented as hash table, bucket and
node ids etc.
Classifiers also have internal per-filter representation which is different
from this externally visible identity. Most classifiers set this
internal representation to be a pointer address (which allows fast retrieval
of said filters in their implementations). This internal representation
is referenced with the "fh" variable in the kernel control code.
When a user successfuly deletes a specific filter, by specifying the correct
tcm->tcm_handle, an event is generated to user space which indicates
which specific filter was deleted.
Before this patch, the "fh" value was sent to user space as the identity.
As an example what is shown in the sample bpf filter delete event above
is 0xf3be0c80. This is infact a 32-bit truncation of 0xffff8807f3be0c80
which happens to be a 64-bit memory address of the internal filter
representation (address of the corresponding filter's struct cls_bpf_prog);
After this patch the appropriate user identifiable handle as encoded
in the originating request tcm->tcm_handle is generated in the event.
One of the cardinal rules of netlink rules is to be able to take an
event (such as a delete in this case) and reflect it back to the
kernel and successfully delete the filter. This patch achieves that.
Note, this issue has existed since the original TC action
infrastructure code patch back in 2004 as found in:
https://git.kernel.org/cgit/linux/kernel/git/history/history.git/commit/
[1] http://patchwork.ozlabs.org/patch/682828/
[2] http://patchwork.ozlabs.org/patch/682829/
Fixes: 4e54c4816bfe ("[NET]: Add tc extensions infrastructure.")
Reported-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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trivial fix to spelling mistake in dev_err message
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Jon Mason <jon.mason@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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gcc warns about an uninitialized pointer dereference in the vlan
priority handling:
net/core/flow_dissector.c: In function '__skb_flow_dissect':
net/core/flow_dissector.c:281:61: error: 'vlan' may be used uninitialized in this function [-Werror=maybe-uninitialized]
As pointed out by Jiri Pirko, the variable is never actually used
without being initialized first as the only way it end up uninitialized
is with skb_vlan_tag_present(skb)==true, and that means it does not
get accessed.
However, the warning hints at some related issues that I'm addressing
here:
- the second check for the vlan tag is different from the first one
that tests the skb for being NULL first, causing both the warning
and a possible NULL pointer dereference that was not entirely fixed.
- The same patch that introduced the NULL pointer check dropped an
earlier optimization that skipped the repeated check of the
protocol type
- The local '_vlan' variable is referenced through the 'vlan' pointer
but the variable has gone out of scope by the time that it is
accessed, causing undefined behavior
Caching the result of the 'skb && skb_vlan_tag_present(skb)' check
in a local variable allows the compiler to further optimize the
later check. With those changes, the warning also disappears.
Fixes: 3805a938a6c2 ("flow_dissector: Check skb for VLAN only if skb specified.")
Fixes: d5709f7ab776 ("flow_dissector: For stripped vlan, get vlan info from skb->vlan_tci")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Eric Garver <e@erig.me>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Similar to IPv4, do not consider link state when validating next hops.
Currently, if the link is down default routes can fail to insert:
$ ip -6 ro add vrf blue default via 2100:2::64 dev eth2
RTNETLINK answers: No route to host
With this patch the command succeeds.
Fixes: 8c14586fc320 ("net: ipv6: Use passed in table for nexthop lookups")
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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rt6_add_route_info and rt6_add_dflt_router were updated to pull the FIB
table from the device index, but the corresponding rt6_get_route_info
and rt6_get_dflt_router functions were not leading to the failure to
process RA's:
ICMPv6: RA: ndisc_router_discovery failed to add default route
Fix the 'get' functions by using the table id associated with the
device when applicable.
Also, now that default routes can be added to tables other than the
default table, rt6_purge_dflt_routers needs to be updated as well to
look at all tables. To handle that efficiently, add a flag to the table
denoting if it is has a default route via RA.
Fixes: ca254490c8dfd ("net: Add VRF support to IPv6 stack")
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The kalmia_send_init_packet() returns zero or a negative return
code, but gcc has no way of knowing that there cannot be a
positive return code, so it determines that copying the ethernet
address at the end of kalmia_bind() will access uninitialized
data:
drivers/net/usb/kalmia.c: In function ‘kalmia_bind’:
arch/x86/include/asm/string_32.h:78:22: error: ‘*((void *)ðernet_addr+4)’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
*((short *)to + 2) = *((short *)from + 2);
^
drivers/net/usb/kalmia.c:138:5: note: ‘*((void *)ðernet_addr+4)’ was declared here
This warning is harmless, but for consistency, we should make
the check for the return code match what the driver does everywhere
else and just progate it, which then gets rid of the warning.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Even if sending SCIs is explicitly disabled, the code that creates the
Security Tag might still decide to add it (e.g. if multiple RX SCs are
defined on the MACsec interface).
But because the header length so far only depended on the configuration
option the SCI overwrote the original frame's contents (EtherType and
e.g. the beginning of the IP header) and if encrypted did not visibly
end up in the packet, while the SC flag in the TCI field of the Security
Tag was still set, resulting in invalid MACsec frames.
Fixes: c09440f7dcb3 ("macsec: introduce IEEE 802.1AE driver")
Signed-off-by: Tobias Brunner <tobias@strongswan.org>
Acked-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In SGMII mode, we observed an autonegotiation issue
after power-down-up cycles where the copper side
reports successful link establishment but the
SGMII side's link is down.
This happened in a setup where the at8031 is
connected over SGMII to a eTSEC (fsl gianfar),
but so far could not be reproduced with other
Ethernet device / driver combinations.
This commit adds a wrapper function for at8031
that in case of operating in SGMII mode double
checks SGMII link state when generic aneg_done()
succeeds. It prints a warning on failure but
intentionally does not try to recover from this
state. As a result, if you ever see a warning
'803x_aneg_done: SGMII link is not ok' you will
end up having an Ethernet link up but won't get
any data through. This should not happen, if it
does, please contact the module maintainer.
Signed-off-by: Zefir Kurtisi <zefir.kurtisi@neratec.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This reverts commit 98267311fe3b334ae7c107fa0e2413adcf3ba735.
Suspending the SGMII alongside the copper side
made the at803x inaccessable while powered down,
e.g. it can't be re-probed after suspend.
Signed-off-by: Zefir Kurtisi <zefir.kurtisi@neratec.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Following Cavium's acquisition of qlogic we need to update all the qlogic
drivers maintainer's entries to point to our new e-mail addresses,
as well as update some of the driver's maintainers as those are no longer
working for Cavium.
I would like to thank Sony Chacko and Rajesh Borundia for their support
and development of our various networking drivers.
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The Hyper-V netvsc driver was looking at the incorrect status bits
in the checksum info. It was setting the receive checksum unnecessary
flag based on the IP header checksum being correct. The checksum
flag is skb is about TCP and UDP checksum status. Because of this
bug, any packet received with bad TCP checksum would be passed
up the stack and to the application causing data corruption.
The problem is reproducible via netcat and netem.
This had a side effect of not doing receive checksum offload
on IPv6. The driver was also also always doing checksum offload
independent of the checksum setting done via ethtool.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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First bug was added in commit ad6f939ab193 ("ip: Add offset parameter to
ip_cmsg_recv") : Tom missed that ipv4 udp messages could be received on
AF_INET6 socket. ip_cmsg_recv(msg, skb) should have been replaced by
ip_cmsg_recv_offset(msg, skb, sizeof(struct udphdr));
Then commit e6afc8ace6dd ("udp: remove headers from UDP packets before
queueing") forgot to adjust the offsets now UDP headers are pulled
before skb are put in receive queue.
Fixes: ad6f939ab193 ("ip: Add offset parameter to ip_cmsg_recv")
Fixes: e6afc8ace6dd ("udp: remove headers from UDP packets before queueing")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Sam Kumar <samanthakumar@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Tested-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 7303a1475008 ("sctp: identify chunks that need to be fragmented
at IP level") made the chunk be fragmented at IP level in the next round
if it's size exceed PMTU.
But there still is another case, PMTU can be updated if transport's dst
expires and transport's pmtu_pending is set in sctp_packet_transmit. If
the new PMTU is less than the chunk, the same issue with that commit can
be triggered.
So we should drop this packet and let it retransmit in another round
where it would be fragmented at IP level.
This patch is to fix it by checking the chunk size after PMTU may be
updated and dropping this packet if it's size exceed PMTU.
Fixes: 90017accff61 ("sctp: Add GSO support")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@txudriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The skbuff and sock structure both had missing parameter annotation
values.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fix to return error code -EINVAL from the error handling
case instead of 0, as done elsewhere in this function.
Fixes: e420114eef4a ("rocker: introduce worlds infrastructure")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth
Johan Hedberg says:
====================
pull request: bluetooth 2016-10-21
Here are some more Bluetooth fixes for the 4.9 kernel:
- Fix to btwilink driver probe function return value
- Power management fix to hci_bcm
- Fix to encoding name in scan response data
Please let me know if there are any issues pulling. Thanks.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Probe functions should return 0 on success. This driver's probe
returns the value returned by hci_register_dev(), which is the hci
index. This works for systems with only one hci device (id = 0) but
for systems where the btwilink device ends up with an id larger than
0, things will start to fall apart.
Make the probe function return 0 on success.
Signed-off-by: Jacob Siverskog <jacob@teenage.engineering>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Append maximum of 10 + 1 bytes of name to scan response data.
Complete name is appended only if exists and is <= 10 characters.
Else append short name if exists or shorten complete name if not.
This makes sure name is consistent across multiple advertising
instances.
Signed-off-by: Michał Narajowski <michal.narajowski@codecoup.pl>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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ACPI table for BCM2E55 of Lenovo ThinkPad 8 is not correct.
Set correctly IRQ polarity for this device, fixing the issue of bluetooth
never resuming after autosuspend PM.
Signed-off-by: Jérôme de Bretagne <jerome.debretagne@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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Most of getsockopt handlers in net/sctp/socket.c check len against
sizeof some structure like:
if (len < sizeof(int))
return -EINVAL;
On the first look, the check seems to be correct. But since len is int
and sizeof returns size_t, int gets promoted to unsigned size_t too. So
the test returns false for negative lengths. Yes, (-1 < sizeof(long)) is
false.
Fix this in sctp by explicitly checking len < 0 before any getsockopt
handler is called.
Note that sctp_getsockopt_events already handled the negative case.
Since we added the < 0 check elsewhere, this one can be removed.
If not checked, this is the result:
UBSAN: Undefined behaviour in ../mm/page_alloc.c:2722:19
shift exponent 52 is too large for 32-bit type 'int'
CPU: 1 PID: 24535 Comm: syz-executor Not tainted 4.8.1-0-syzkaller #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.9.1-0-gb3ef39f-prebuilt.qemu-project.org 04/01/2014
0000000000000000 ffff88006d99f2a8 ffffffffb2f7bdea 0000000041b58ab3
ffffffffb4363c14 ffffffffb2f7bcde ffff88006d99f2d0 ffff88006d99f270
0000000000000000 0000000000000000 0000000000000034 ffffffffb5096422
Call Trace:
[<ffffffffb3051498>] ? __ubsan_handle_shift_out_of_bounds+0x29c/0x300
...
[<ffffffffb273f0e4>] ? kmalloc_order+0x24/0x90
[<ffffffffb27416a4>] ? kmalloc_order_trace+0x24/0x220
[<ffffffffb2819a30>] ? __kmalloc+0x330/0x540
[<ffffffffc18c25f4>] ? sctp_getsockopt_local_addrs+0x174/0xca0 [sctp]
[<ffffffffc18d2bcd>] ? sctp_getsockopt+0x10d/0x1b0 [sctp]
[<ffffffffb37c1219>] ? sock_common_getsockopt+0xb9/0x150
[<ffffffffb37be2f5>] ? SyS_getsockopt+0x1a5/0x270
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Vlad Yasevich <vyasevich@gmail.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-sctp@vger.kernel.org
Cc: netdev@vger.kernel.org
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 3ac72b7b63d5 ("net: fec: align IP header in hardware") breaks
networking on mx28.
There is an erratum on mx28 (ENGR121613 - ENET big endian mode
not compatible with ARM little endian) that requires an additional
byte-swap operation to workaround this problem.
So call swap_buffer() prior to performing the IP header alignment
to restore network functionality on mx28.
Fixes: 3ac72b7b63d5 ("net: fec: align IP header in hardware")
Reported-and-tested-by: Henri Roosen <henri.roosen@ginzinger.com>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Otherwise we'll overflow the integer. This occurs when layer 3 tunneled
packets are handed off to the IPv6 layer.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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