| Age | Commit message (Collapse) | Author | Files | Lines |
|---|
|
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Dan Carpenter reports static checker warnings due to bogus BIT() usage:
net/mptcp/subflow.c:571 subflow_write_space() warn: test_bit() takes a bit number
net/mptcp/subflow.c:694 subflow_state_change() warn: test_bit() takes a bit number
net/mptcp/protocol.c:261 ssk_check_wmem() warn: test_bit() takes a bit number
[..]
This is harmless (we use bits 1 & 2 instead of 0 and 1), but would
break eventually when adding BIT(5) (or 6, depends on size of 'long').
Just use 0 and 1, the values are only passed to test/set/clear_bit
functions.
Fixes: 648ef4b88673 ("mptcp: Implement MPTCP receive path")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
If an event is added while the rdma workqueue is being destroyed
it could lead to several races, list corruption, null pointer
dereference during queue_work or init_queue.
This fixes the race between the two flows which can occur during
shutdown.
A kref object and a completion object are added to the rdma_dev
structure, these are initialized before the workqueue is created.
The refcnt is used to indicate work is being added to the
workqueue and ensures the cleanup flow won't start while we're in
the middle of adding the event.
Once the work is added, the refcnt is decreased and the cleanup flow
is safe to run.
Fixes: cee9fbd8e2e ("qede: Add qedr framework")
Signed-off-by: Ariel Elior <ariel.elior@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
The kernel only accepts map names with alphanumeric characters, underscores
and periods in their name. However, the auto-generated internal map names
used by libbpf takes their prefix from the user-supplied BPF object name,
which has no such restriction. This can lead to "Invalid argument" errors
when trying to load a BPF program using global variables.
Fix this by sanitising the map names, replacing any non-allowed characters
with underscores.
Fixes: d859900c4c56 ("bpf, libbpf: support global data/bss/rodata sections")
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200217171701.215215-1-toke@redhat.com
|
|
The performance of bpf_redirect() is now roughly the same as that of
bpf_redirect_map(). However, David Ahern pointed out that the header file
has not been updated to reflect this, and still says that a significant
performance increase is possible when using bpf_redirect_map(). Remove this
text from the bpf_redirect_map() description, and reword the description in
bpf_redirect() slightly. Also fix the 'Return' section of the
bpf_redirect_map() documentation.
Fixes: 1d233886dd90 ("xdp: Use bulking for non-map XDP_REDIRECT and consolidate code paths")
Reported-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/20200218130334.29889-1-toke@redhat.com
|
|
0x11 and 0x12 set the ECN bits based on RFC2474, it would be better to avoid
that. 0x14 and 0x18 would be better and works as well.
Reported-by: Petr Machata <petrm@mellanox.com>
Fixes: 4e867c9a50ff ("selftests: forwarding: vxlan_bridge_1d: fix tos value")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
The reserved member should be named reserved3.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
When T2 timer is to be stopped, the asoc should also be deleted,
otherwise, there will be no chance to call sctp_association_free
and the asoc could last in memory forever.
However, in sctp_sf_shutdown_sent_abort(), after adding the cmd
SCTP_CMD_TIMER_STOP for T2 timer, it may return error due to the
format error from __sctp_sf_do_9_1_abort() and miss adding
SCTP_CMD_ASSOC_FAILED where the asoc will be deleted.
This patch is to fix it by moving the format error check out of
__sctp_sf_do_9_1_abort(), and do it before adding the cmd
SCTP_CMD_TIMER_STOP for T2 timer.
Thanks Hangbin for reporting this issue by the fuzz testing.
v1->v2:
- improve the comment in the code as Marcelo's suggestion.
Fixes: 96ca468b86b0 ("sctp: check invalid value of length parameter in error cause")
Reported-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
tc flower rules that are based on src or dst port blocking are sometimes
ineffective due to uninitialized stack data. __skb_flow_dissect() extracts
ports from the skb for tc flower to match against. However, the port
dissection is not done when when the FLOW_DIS_IS_FRAGMENT bit is set in
key_control->flags. All callers of __skb_flow_dissect(), zero-out the
key_control field except for fl_classify() as used by the flower
classifier. Thus, the FLOW_DIS_IS_FRAGMENT may be set on entry to
__skb_flow_dissect(), since key_control is allocated on the stack
and may not be initialized.
Since key_basic and key_control are present for all flow keys, let's
make sure they are initialized.
Fixes: 62230715fd24 ("flow_dissector: do not dissect l4 ports for fragments")
Co-developed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Jason Baron <jbaron@akamai.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Each extracted frame on Ocelot has an IFH. The frame and IFH are extracted
by reading chuncks of 4 bytes from a register.
In case the IFH and frames were read corretly it would try to read the next
frame. In case there are no more frames in the queue, it checks if there
were any previous errors and in that case clear the queue. But this check
will always succeed also when there are no errors. Because when extracting
the IFH the error is checked against 4(number of bytes read) and then the
error is set only if the extraction of the frame failed. So in a happy case
where there are no errors the err variable is still 4. So it could be
a case where after the check that there are no more frames in the queue, a
frame will arrive in the queue but because the error is not reseted, it
would try to flush the queue. So the frame will be lost.
The fix consist in resetting the error after reading the IFH.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
This if guards whether user-space wants a copy of the offload-jited
bytecode and whether this bytecode exists. By erroneously doing a bitwise
AND instead of a logical AND on user- and kernel-space buffer-size can lead
to no data being copied to user-space especially when user-space size is a
power of two and bigger then the kernel-space buffer.
Fixes: fcfb126defda ("bpf: add new jited info fields in bpf_dev_offload and bpf_prog_info")
Signed-off-by: Johannes Krude <johannes@krude.de>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/bpf/20200212193227.GA3769@phlox.h.transitiv.net
|
|
This patch further relaxes the need to drop an skb due to a clash with
an existing conntrack entry.
Current clash resolution handles the case where the clash occurs between
two identical entries (distinct nf_conn objects with same tuples), i.e.:
Original Reply
existing: 10.2.3.4:42 -> 10.8.8.8:53 10.2.3.4:42 <- 10.0.0.6:5353
clashing: 10.2.3.4:42 -> 10.8.8.8:53 10.2.3.4:42 <- 10.0.0.6:5353
... existing handling will discard the unconfirmed clashing entry and
makes skb->_nfct point to the existing one. The skb can then be
processed normally just as if the clash would not have existed in the
first place.
For other clashes, the skb needs to be dropped.
This frequently happens with DNS resolvers that send A and AAAA queries
back-to-back when NAT rules are present that cause packets to get
different DNAT transformations applied, for example:
-m statistics --mode random ... -j DNAT --dnat-to 10.0.0.6:5353
-m statistics --mode random ... -j DNAT --dnat-to 10.0.0.7:5353
In this case the A or AAAA query is dropped which incurs a costly
delay during name resolution.
This patch also allows this collision type:
Original Reply
existing: 10.2.3.4:42 -> 10.8.8.8:53 10.2.3.4:42 <- 10.0.0.6:5353
clashing: 10.2.3.4:42 -> 10.8.8.8:53 10.2.3.4:42 <- 10.0.0.7:5353
In this case, clash is in original direction -- the reply direction
is still unique.
The change makes it so that when the 2nd colliding packet is received,
the clashing conntrack is tagged with new IPS_NAT_CLASH_BIT, gets a fixed
1 second timeout and is inserted in the reply direction only.
The entry is hidden from 'conntrack -L', it will time out quickly
and it can be early dropped because it will never progress to the
ASSURED state.
To avoid special-casing the delete code path to special case
the ORIGINAL hlist_nulls node, a new helper, "hlist_nulls_add_fake", is
added so hlist_nulls_del() will work.
Example:
CPU A: CPU B:
1. 10.2.3.4:42 -> 10.8.8.8:53 (A)
2. 10.2.3.4:42 -> 10.8.8.8:53 (AAAA)
3. Apply DNAT, reply changed to 10.0.0.6
4. 10.2.3.4:42 -> 10.8.8.8:53 (AAAA)
5. Apply DNAT, reply changed to 10.0.0.7
6. confirm/commit to conntrack table, no collisions
7. commit clashing entry
Reply comes in:
10.2.3.4:42 <- 10.0.0.6:5353 (A)
-> Finds a conntrack, DNAT is reversed & packet forwarded to 10.2.3.4:42
10.2.3.4:42 <- 10.0.0.7:5353 (AAAA)
-> Finds a conntrack, DNAT is reversed & packet forwarded to 10.2.3.4:42
The conntrack entry is deleted from table, as it has the NAT_CLASH
bit set.
In case of a retransmit from ORIGINAL dir, all further packets will get
the DNAT transformation to 10.0.0.6.
I tried to come up with other solutions but they all have worse
problems.
Alternatives considered were:
1. Confirm ct entries at allocation time, not in postrouting.
a. will cause uneccesarry work when the skb that creates the
conntrack is dropped by ruleset.
b. in case nat is applied, ct entry would need to be moved in
the table, which requires another spinlock pair to be taken.
c. breaks the 'unconfirmed entry is private to cpu' assumption:
we would need to guard all nfct->ext allocation requests with
ct->lock spinlock.
2. Make the unconfirmed list a hash table instead of a pcpu list.
Shares drawback c) of the first alternative.
3. Document this is expected and force users to rearrange their
ruleset (e.g. by using "-m cluster" instead of "-m statistics").
nft has the 'jhash' expression which can be used instead of 'numgen'.
Major drawback: doesn't fix what I consider a bug, not very realistic
and I believe its reasonable to have the existing rulesets to 'just
work'.
4. Document this is expected and force users to steer problematic
packets to the same CPU -- this would serialize the "allocate new
conntrack entry/nat table evaluation/perform nat/confirm entry", so
no race can occur. Similar drawback to 3.
Another advantage of this patch compared to 1) and 2) is that there are
no changes to the hot path; things are handled in the udp tracker and
the clash resolution path.
Cc: rcu@vger.kernel.org
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Jozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|
|
The call to of_get_mac_address() can return -EPROBE_DEFER, for instance
when the MAC address is read from a NVMEM driver that did not probe yet.
Cc: H. Nikolaus Schaller <hns@goldelico.com>
Cc: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Fix all kernel-doc warnings in <linux/skbuff.h>.
Fixes these warnings:
../include/linux/skbuff.h:890: warning: Function parameter or member 'list' not described in 'sk_buff'
../include/linux/skbuff.h:890: warning: Function parameter or member 'dev_scratch' not described in 'sk_buff'
../include/linux/skbuff.h:890: warning: Function parameter or member 'ip_defrag_offset' not described in 'sk_buff'
../include/linux/skbuff.h:890: warning: Function parameter or member 'skb_mstamp_ns' not described in 'sk_buff'
../include/linux/skbuff.h:890: warning: Function parameter or member '__cloned_offset' not described in 'sk_buff'
../include/linux/skbuff.h:890: warning: Function parameter or member 'head_frag' not described in 'sk_buff'
../include/linux/skbuff.h:890: warning: Function parameter or member '__pkt_type_offset' not described in 'sk_buff'
../include/linux/skbuff.h:890: warning: Function parameter or member 'encapsulation' not described in 'sk_buff'
../include/linux/skbuff.h:890: warning: Function parameter or member 'encap_hdr_csum' not described in 'sk_buff'
../include/linux/skbuff.h:890: warning: Function parameter or member 'csum_valid' not described in 'sk_buff'
../include/linux/skbuff.h:890: warning: Function parameter or member '__pkt_vlan_present_offset' not described in 'sk_buff'
../include/linux/skbuff.h:890: warning: Function parameter or member 'vlan_present' not described in 'sk_buff'
../include/linux/skbuff.h:890: warning: Function parameter or member 'csum_complete_sw' not described in 'sk_buff'
../include/linux/skbuff.h:890: warning: Function parameter or member 'csum_level' not described in 'sk_buff'
../include/linux/skbuff.h:890: warning: Function parameter or member 'inner_protocol_type' not described in 'sk_buff'
../include/linux/skbuff.h:890: warning: Function parameter or member 'remcsum_offload' not described in 'sk_buff'
../include/linux/skbuff.h:890: warning: Function parameter or member 'sender_cpu' not described in 'sk_buff'
../include/linux/skbuff.h:890: warning: Function parameter or member 'reserved_tailroom' not described in 'sk_buff'
../include/linux/skbuff.h:890: warning: Function parameter or member 'inner_ipproto' not described in 'sk_buff'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Remove stale comments since this flag is no longer a bit mask
but is a bit field.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Fix all kernel-doc warnings for <net/sock.h>.
Fixes these warnings:
../include/net/sock.h:232: warning: Function parameter or member 'skc_addrpair' not described in 'sock_common'
../include/net/sock.h:232: warning: Function parameter or member 'skc_portpair' not described in 'sock_common'
../include/net/sock.h:232: warning: Function parameter or member 'skc_ipv6only' not described in 'sock_common'
../include/net/sock.h:232: warning: Function parameter or member 'skc_net_refcnt' not described in 'sock_common'
../include/net/sock.h:232: warning: Function parameter or member 'skc_v6_daddr' not described in 'sock_common'
../include/net/sock.h:232: warning: Function parameter or member 'skc_v6_rcv_saddr' not described in 'sock_common'
../include/net/sock.h:232: warning: Function parameter or member 'skc_cookie' not described in 'sock_common'
../include/net/sock.h:232: warning: Function parameter or member 'skc_listener' not described in 'sock_common'
../include/net/sock.h:232: warning: Function parameter or member 'skc_tw_dr' not described in 'sock_common'
../include/net/sock.h:232: warning: Function parameter or member 'skc_rcv_wnd' not described in 'sock_common'
../include/net/sock.h:232: warning: Function parameter or member 'skc_tw_rcv_nxt' not described in 'sock_common'
../include/net/sock.h:498: warning: Function parameter or member 'sk_rx_skb_cache' not described in 'sock'
../include/net/sock.h:498: warning: Function parameter or member 'sk_wq_raw' not described in 'sock'
../include/net/sock.h:498: warning: Function parameter or member 'tcp_rtx_queue' not described in 'sock'
../include/net/sock.h:498: warning: Function parameter or member 'sk_tx_skb_cache' not described in 'sock'
../include/net/sock.h:498: warning: Function parameter or member 'sk_route_forced_caps' not described in 'sock'
../include/net/sock.h:498: warning: Function parameter or member 'sk_txtime_report_errors' not described in 'sock'
../include/net/sock.h:498: warning: Function parameter or member 'sk_validate_xmit_skb' not described in 'sock'
../include/net/sock.h:498: warning: Function parameter or member 'sk_bpf_storage' not described in 'sock'
../include/net/sock.h:2024: warning: No description found for return value of 'sk_wmem_alloc_get'
../include/net/sock.h:2035: warning: No description found for return value of 'sk_rmem_alloc_get'
../include/net/sock.h:2046: warning: No description found for return value of 'sk_has_allocations'
../include/net/sock.h:2082: warning: No description found for return value of 'skwq_has_sleeper'
../include/net/sock.h:2244: warning: No description found for return value of 'sk_page_frag'
../include/net/sock.h:2444: warning: Function parameter or member 'tcp_rx_skb_cache_key' not described in 'DECLARE_STATIC_KEY_FALSE'
../include/net/sock.h:2444: warning: Excess function parameter 'sk' description in 'DECLARE_STATIC_KEY_FALSE'
../include/net/sock.h:2444: warning: Excess function parameter 'skb' description in 'DECLARE_STATIC_KEY_FALSE'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
The Micrel KSZ8851-16MLLI datasheet DS00002357B page 12 states that
BE[3:0] signals are active high. This contradicts the measurements
of the behavior of the actual chip, where these signals behave as
active low. For example, to read the CIDER register, the bus must
expose 0xc0c0 during the address phase, which means BE[3:0]=4'b1100.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: Lukas Wunner <lukas@wunner.de>
Cc: Petr Stetiar <ynezz@true.cz>
Cc: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
The packet data written to and read from Micrel KSZ8851-16MLLI must be
byte-swapped in 16-bit mode, add this byte-swapping.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: Lukas Wunner <lukas@wunner.de>
Cc: Petr Stetiar <ynezz@true.cz>
Cc: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
This driver is mixing 8-bit and 16-bit bus accessors for reasons unknown,
however the speculation is that this was some sort of attempt to support
the 8-bit bus mode.
As per the KS8851-16MLL documentation, all two registers accessed via the
8-bit accessors are internally 16-bit registers, so reading them using
16-bit accessors is fine. The KS_CCR read can be converted to 16-bit read
outright, as it is already a concatenation of two 8-bit reads of that
register. The KS_RXQCR accesses are 8-bit only, however writing the top
8 bits of the register is OK as well, since the driver caches the entire
16-bit register value anyway.
Finally, the driver is not used by any hardware in the kernel right now.
The only hardware available to me is one with 16-bit bus, so I have no
way to test the 8-bit bus mode, however it is unlikely this ever really
worked anyway. If the 8-bit bus mode is ever required, it can be easily
added by adjusting the 16-bit accessors to do 2 consecutive accesses,
which is how this should have been done from the beginning.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: Lukas Wunner <lukas@wunner.de>
Cc: Petr Stetiar <ynezz@true.cz>
Cc: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Without this modification and if CRYPTO is not selected, we have this
warning:
WARNING: unmet direct dependencies detected for CRYPTO_LIB_SHA256
Depends on [n]: CRYPTO [=n]
Selected by [y]:
- MPTCP [=y] && NET [=y] && INET [=y]
MPTCP selects CRYPTO_LIB_SHA256 which seems to depend on CRYPTO. CRYPTO
is now selected to avoid this issue.
Even though the config system prints that warning, it looks like
sha256.c is compiled and linked even without CONFIG_CRYPTO. Since MPTCP
will end up needing CONFIG_CRYPTO anyway in future commits -- currently
in preparation for net-next -- we propose to add it now to fix the
warning.
The dependency in the config system comes from the fact that
CRYPTO_LIB_SHA256 is defined in "lib/crypto/Kconfig" which is sourced
from "crypto/Kconfig" only if CRYPTO is selected.
Fixes: 65492c5a6ab5 (mptcp: move from sha1 (v0) to sha256 (v1))
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Taehee Yoo says:
====================
bonding: fix bonding interface bugs
This patchset fixes lockdep problem in bonding interface
1. The first patch is to add missing netdev_update_lockdep_key().
After bond_release(), netdev_update_lockdep_key() should be called.
But both ioctl path and attribute path don't call
netdev_update_lockdep_key().
This patch adds missing netdev_update_lockdep_key().
2. The second patch is to export netdev_next_lower_dev_rcu symbol.
netdev_next_lower_dev_rcu() is useful to implement the function,
which is to walk their all lower interfaces.
This patch is actually a preparing patch for the third patch.
3. The last patch is to fix lockdep waring in bond_get_stats().
The stats_lock uses a dynamic lockdep key.
So, after "nomaster" operation, updating the dynamic lockdep key
routine is needed. but it doesn't
So, lockdep warning occurs.
Change log:
v1 -> v2:
- Update headline from "fix bonding interface bugs"
to "bonding: fix bonding interface bugs"
- Drop a patch("bonding: do not collect slave's stats")
- Add new patches
- ("net: export netdev_next_lower_dev_rcu()")
- ("bonding: fix lockdep warning in bond_get_stats()")
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
In the "struct bonding", there is stats_lock.
This lock protects "bond_stats" in the "struct bonding".
bond_stats is updated in the bond_get_stats() and this function would be
executed concurrently. So, the lock is needed.
Bonding interfaces would be nested.
So, either stats_lock should use dynamic lockdep class key or stats_lock
should be used by spin_lock_nested(). In the current code, stats_lock is
using a dynamic lockdep class key.
But there is no updating stats_lock_key routine So, lockdep warning
will occur.
Test commands:
ip link add bond0 type bond
ip link add bond1 type bond
ip link set bond0 master bond1
ip link set bond0 nomaster
ip link set bond1 master bond0
Splat looks like:
[ 38.420603][ T957] 5.5.0+ #394 Not tainted
[ 38.421074][ T957] ------------------------------------------------------
[ 38.421837][ T957] ip/957 is trying to acquire lock:
[ 38.422399][ T957] ffff888063262cd8 (&bond->stats_lock_key#2){+.+.}, at: bond_get_stats+0x90/0x4d0 [bonding]
[ 38.423528][ T957]
[ 38.423528][ T957] but task is already holding lock:
[ 38.424526][ T957] ffff888065fd2cd8 (&bond->stats_lock_key){+.+.}, at: bond_get_stats+0x90/0x4d0 [bonding]
[ 38.426075][ T957]
[ 38.426075][ T957] which lock already depends on the new lock.
[ 38.426075][ T957]
[ 38.428536][ T957]
[ 38.428536][ T957] the existing dependency chain (in reverse order) is:
[ 38.429475][ T957]
[ 38.429475][ T957] -> #1 (&bond->stats_lock_key){+.+.}:
[ 38.430273][ T957] _raw_spin_lock+0x30/0x70
[ 38.430812][ T957] bond_get_stats+0x90/0x4d0 [bonding]
[ 38.431451][ T957] dev_get_stats+0x1ec/0x270
[ 38.432088][ T957] bond_get_stats+0x1a5/0x4d0 [bonding]
[ 38.432767][ T957] dev_get_stats+0x1ec/0x270
[ 38.433322][ T957] rtnl_fill_stats+0x44/0xbe0
[ 38.433866][ T957] rtnl_fill_ifinfo+0xeb2/0x3720
[ 38.434474][ T957] rtmsg_ifinfo_build_skb+0xca/0x170
[ 38.435081][ T957] rtmsg_ifinfo_event.part.33+0x1b/0xb0
[ 38.436848][ T957] rtnetlink_event+0xcd/0x120
[ 38.437455][ T957] notifier_call_chain+0x90/0x160
[ 38.438067][ T957] netdev_change_features+0x74/0xa0
[ 38.438708][ T957] bond_compute_features.isra.45+0x4e6/0x6f0 [bonding]
[ 38.439522][ T957] bond_enslave+0x3639/0x47b0 [bonding]
[ 38.440225][ T957] do_setlink+0xaab/0x2ef0
[ 38.440786][ T957] __rtnl_newlink+0x9c5/0x1270
[ 38.441463][ T957] rtnl_newlink+0x65/0x90
[ 38.442075][ T957] rtnetlink_rcv_msg+0x4a8/0x890
[ 38.442774][ T957] netlink_rcv_skb+0x121/0x350
[ 38.443451][ T957] netlink_unicast+0x42e/0x610
[ 38.444282][ T957] netlink_sendmsg+0x65a/0xb90
[ 38.444992][ T957] ____sys_sendmsg+0x5ce/0x7a0
[ 38.445679][ T957] ___sys_sendmsg+0x10f/0x1b0
[ 38.446365][ T957] __sys_sendmsg+0xc6/0x150
[ 38.447007][ T957] do_syscall_64+0x99/0x4f0
[ 38.447668][ T957] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 38.448538][ T957]
[ 38.448538][ T957] -> #0 (&bond->stats_lock_key#2){+.+.}:
[ 38.449554][ T957] __lock_acquire+0x2d8d/0x3de0
[ 38.450148][ T957] lock_acquire+0x164/0x3b0
[ 38.450711][ T957] _raw_spin_lock+0x30/0x70
[ 38.451292][ T957] bond_get_stats+0x90/0x4d0 [bonding]
[ 38.451950][ T957] dev_get_stats+0x1ec/0x270
[ 38.452425][ T957] bond_get_stats+0x1a5/0x4d0 [bonding]
[ 38.453362][ T957] dev_get_stats+0x1ec/0x270
[ 38.453825][ T957] rtnl_fill_stats+0x44/0xbe0
[ 38.454390][ T957] rtnl_fill_ifinfo+0xeb2/0x3720
[ 38.456257][ T957] rtmsg_ifinfo_build_skb+0xca/0x170
[ 38.456998][ T957] rtmsg_ifinfo_event.part.33+0x1b/0xb0
[ 38.459351][ T957] rtnetlink_event+0xcd/0x120
[ 38.460086][ T957] notifier_call_chain+0x90/0x160
[ 38.460829][ T957] netdev_change_features+0x74/0xa0
[ 38.461752][ T957] bond_compute_features.isra.45+0x4e6/0x6f0 [bonding]
[ 38.462705][ T957] bond_enslave+0x3639/0x47b0 [bonding]
[ 38.463476][ T957] do_setlink+0xaab/0x2ef0
[ 38.464141][ T957] __rtnl_newlink+0x9c5/0x1270
[ 38.464897][ T957] rtnl_newlink+0x65/0x90
[ 38.465522][ T957] rtnetlink_rcv_msg+0x4a8/0x890
[ 38.466215][ T957] netlink_rcv_skb+0x121/0x350
[ 38.466895][ T957] netlink_unicast+0x42e/0x610
[ 38.467583][ T957] netlink_sendmsg+0x65a/0xb90
[ 38.468285][ T957] ____sys_sendmsg+0x5ce/0x7a0
[ 38.469202][ T957] ___sys_sendmsg+0x10f/0x1b0
[ 38.469884][ T957] __sys_sendmsg+0xc6/0x150
[ 38.470587][ T957] do_syscall_64+0x99/0x4f0
[ 38.471245][ T957] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 38.472093][ T957]
[ 38.472093][ T957] other info that might help us debug this:
[ 38.472093][ T957]
[ 38.473438][ T957] Possible unsafe locking scenario:
[ 38.473438][ T957]
[ 38.474898][ T957] CPU0 CPU1
[ 38.476234][ T957] ---- ----
[ 38.480171][ T957] lock(&bond->stats_lock_key);
[ 38.480808][ T957] lock(&bond->stats_lock_key#2);
[ 38.481791][ T957] lock(&bond->stats_lock_key);
[ 38.482754][ T957] lock(&bond->stats_lock_key#2);
[ 38.483416][ T957]
[ 38.483416][ T957] *** DEADLOCK ***
[ 38.483416][ T957]
[ 38.484505][ T957] 3 locks held by ip/957:
[ 38.485048][ T957] #0: ffffffffbccf6230 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x457/0x890
[ 38.486198][ T957] #1: ffff888065fd2cd8 (&bond->stats_lock_key){+.+.}, at: bond_get_stats+0x90/0x4d0 [bonding]
[ 38.487625][ T957] #2: ffffffffbc9254c0 (rcu_read_lock){....}, at: bond_get_stats+0x5/0x4d0 [bonding]
[ 38.488897][ T957]
[ 38.488897][ T957] stack backtrace:
[ 38.489646][ T957] CPU: 1 PID: 957 Comm: ip Not tainted 5.5.0+ #394
[ 38.490497][ T957] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[ 38.492810][ T957] Call Trace:
[ 38.493219][ T957] dump_stack+0x96/0xdb
[ 38.493709][ T957] check_noncircular+0x371/0x450
[ 38.494344][ T957] ? lookup_address+0x60/0x60
[ 38.494923][ T957] ? print_circular_bug.isra.35+0x310/0x310
[ 38.495699][ T957] ? hlock_class+0x130/0x130
[ 38.496334][ T957] ? __lock_acquire+0x2d8d/0x3de0
[ 38.496979][ T957] __lock_acquire+0x2d8d/0x3de0
[ 38.497607][ T957] ? register_lock_class+0x14d0/0x14d0
[ 38.498333][ T957] ? check_chain_key+0x236/0x5d0
[ 38.499003][ T957] lock_acquire+0x164/0x3b0
[ 38.499800][ T957] ? bond_get_stats+0x90/0x4d0 [bonding]
[ 38.500706][ T957] _raw_spin_lock+0x30/0x70
[ 38.501435][ T957] ? bond_get_stats+0x90/0x4d0 [bonding]
[ 38.502311][ T957] bond_get_stats+0x90/0x4d0 [bonding]
[ ... ]
But, there is another problem.
The dynamic lockdep class key is protected by RTNL, but bond_get_stats()
would be called outside of RTNL.
So, it would use an invalid dynamic lockdep class key.
In order to fix this issue, stats_lock uses spin_lock_nested() instead of
a dynamic lockdep key.
The bond_get_stats() calls bond_get_lowest_level_rcu() to get the correct
nest level value, which will be used by spin_lock_nested().
The "dev->lower_level" indicates lower nest level value, but this value
is invalid outside of RTNL.
So, bond_get_lowest_level_rcu() returns valid lower nest level value in
the RCU critical section.
bond_get_lowest_level_rcu() will be work only when LOCKDEP is enabled.
Fixes: 089bca2caed0 ("bonding: use dynamic lockdep key instead of subclass")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
netdev_next_lower_dev_rcu() will be used to implement a function,
which is to walk all lower interfaces.
There are already functions that they walk their lower interface.
(netdev_walk_all_lower_dev_rcu, netdev_walk_all_lower_dev()).
But, there would be cases that couldn't be covered by given
netdev_walk_all_lower_dev_{rcu}() function.
So, some modules would want to implement own function,
which is to walk all lower interfaces.
In the next patch, netdev_next_lower_dev_rcu() will be used.
In addition, this patch removes two unused prototypes in netdevice.h.
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
After bond_release(), netdev_update_lockdep_key() should be called.
But both ioctl path and attribute path don't call
netdev_update_lockdep_key().
This patch adds missing netdev_update_lockdep_key().
Test commands:
ip link add bond0 type bond
ip link add bond1 type bond
ifenslave bond0 bond1
ifenslave -d bond0 bond1
ifenslave bond1 bond0
Splat looks like:
[ 29.501182][ T1046] WARNING: possible circular locking dependency detected
[ 29.501945][ T1039] hardirqs last disabled at (1962): [<ffffffffac6c807f>] handle_mm_fault+0x13f/0x700
[ 29.503442][ T1046] 5.5.0+ #322 Not tainted
[ 29.503447][ T1046] ------------------------------------------------------
[ 29.504277][ T1039] softirqs last enabled at (1180): [<ffffffffade00678>] __do_softirq+0x678/0x981
[ 29.505443][ T1046] ifenslave/1046 is trying to acquire lock:
[ 29.505886][ T1039] softirqs last disabled at (1169): [<ffffffffac19c18a>] irq_exit+0x17a/0x1a0
[ 29.509997][ T1046] ffff88805d5da280 (&dev->addr_list_lock_key#3){+...}, at: dev_mc_sync_multiple+0x95/0x120
[ 29.511243][ T1046]
[ 29.511243][ T1046] but task is already holding lock:
[ 29.512192][ T1046] ffff8880460f2280 (&dev->addr_list_lock_key#4){+...}, at: bond_enslave+0x4482/0x47b0 [bonding]
[ 29.514124][ T1046]
[ 29.514124][ T1046] which lock already depends on the new lock.
[ 29.514124][ T1046]
[ 29.517297][ T1046]
[ 29.517297][ T1046] the existing dependency chain (in reverse order) is:
[ 29.518231][ T1046]
[ 29.518231][ T1046] -> #1 (&dev->addr_list_lock_key#4){+...}:
[ 29.519076][ T1046] _raw_spin_lock+0x30/0x70
[ 29.519588][ T1046] dev_mc_sync_multiple+0x95/0x120
[ 29.520208][ T1046] bond_enslave+0x448d/0x47b0 [bonding]
[ 29.520862][ T1046] bond_option_slaves_set+0x1a3/0x370 [bonding]
[ 29.521640][ T1046] __bond_opt_set+0x1ff/0xbb0 [bonding]
[ 29.522438][ T1046] __bond_opt_set_notify+0x2b/0xf0 [bonding]
[ 29.523251][ T1046] bond_opt_tryset_rtnl+0x92/0xf0 [bonding]
[ 29.524082][ T1046] bonding_sysfs_store_option+0x8a/0xf0 [bonding]
[ 29.524959][ T1046] kernfs_fop_write+0x276/0x410
[ 29.525620][ T1046] vfs_write+0x197/0x4a0
[ 29.526218][ T1046] ksys_write+0x141/0x1d0
[ 29.526818][ T1046] do_syscall_64+0x99/0x4f0
[ 29.527430][ T1046] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 29.528265][ T1046]
[ 29.528265][ T1046] -> #0 (&dev->addr_list_lock_key#3){+...}:
[ 29.529272][ T1046] __lock_acquire+0x2d8d/0x3de0
[ 29.529935][ T1046] lock_acquire+0x164/0x3b0
[ 29.530638][ T1046] _raw_spin_lock+0x30/0x70
[ 29.531187][ T1046] dev_mc_sync_multiple+0x95/0x120
[ 29.531790][ T1046] bond_enslave+0x448d/0x47b0 [bonding]
[ 29.532451][ T1046] bond_option_slaves_set+0x1a3/0x370 [bonding]
[ 29.533163][ T1046] __bond_opt_set+0x1ff/0xbb0 [bonding]
[ 29.533789][ T1046] __bond_opt_set_notify+0x2b/0xf0 [bonding]
[ 29.534595][ T1046] bond_opt_tryset_rtnl+0x92/0xf0 [bonding]
[ 29.535500][ T1046] bonding_sysfs_store_option+0x8a/0xf0 [bonding]
[ 29.536379][ T1046] kernfs_fop_write+0x276/0x410
[ 29.537057][ T1046] vfs_write+0x197/0x4a0
[ 29.537640][ T1046] ksys_write+0x141/0x1d0
[ 29.538251][ T1046] do_syscall_64+0x99/0x4f0
[ 29.538870][ T1046] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 29.539659][ T1046]
[ 29.539659][ T1046] other info that might help us debug this:
[ 29.539659][ T1046]
[ 29.540953][ T1046] Possible unsafe locking scenario:
[ 29.540953][ T1046]
[ 29.541883][ T1046] CPU0 CPU1
[ 29.542540][ T1046] ---- ----
[ 29.543209][ T1046] lock(&dev->addr_list_lock_key#4);
[ 29.543880][ T1046] lock(&dev->addr_list_lock_key#3);
[ 29.544873][ T1046] lock(&dev->addr_list_lock_key#4);
[ 29.545863][ T1046] lock(&dev->addr_list_lock_key#3);
[ 29.546525][ T1046]
[ 29.546525][ T1046] *** DEADLOCK ***
[ 29.546525][ T1046]
[ 29.547542][ T1046] 5 locks held by ifenslave/1046:
[ 29.548196][ T1046] #0: ffff88806044c478 (sb_writers#5){.+.+}, at: vfs_write+0x3bb/0x4a0
[ 29.549248][ T1046] #1: ffff88805af00890 (&of->mutex){+.+.}, at: kernfs_fop_write+0x1cf/0x410
[ 29.550343][ T1046] #2: ffff88805b8b54b0 (kn->count#157){.+.+}, at: kernfs_fop_write+0x1f2/0x410
[ 29.551575][ T1046] #3: ffffffffaecf4cf0 (rtnl_mutex){+.+.}, at: bond_opt_tryset_rtnl+0x5f/0xf0 [bonding]
[ 29.552819][ T1046] #4: ffff8880460f2280 (&dev->addr_list_lock_key#4){+...}, at: bond_enslave+0x4482/0x47b0 [bonding]
[ 29.554175][ T1046]
[ 29.554175][ T1046] stack backtrace:
[ 29.554907][ T1046] CPU: 0 PID: 1046 Comm: ifenslave Not tainted 5.5.0+ #322
[ 29.555854][ T1046] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[ 29.557064][ T1046] Call Trace:
[ 29.557504][ T1046] dump_stack+0x96/0xdb
[ 29.558054][ T1046] check_noncircular+0x371/0x450
[ 29.558723][ T1046] ? print_circular_bug.isra.35+0x310/0x310
[ 29.559486][ T1046] ? hlock_class+0x130/0x130
[ 29.560100][ T1046] ? __lock_acquire+0x2d8d/0x3de0
[ 29.560761][ T1046] __lock_acquire+0x2d8d/0x3de0
[ 29.561366][ T1046] ? register_lock_class+0x14d0/0x14d0
[ 29.562045][ T1046] ? find_held_lock+0x39/0x1d0
[ 29.562641][ T1046] lock_acquire+0x164/0x3b0
[ 29.563199][ T1046] ? dev_mc_sync_multiple+0x95/0x120
[ 29.563872][ T1046] _raw_spin_lock+0x30/0x70
[ 29.564464][ T1046] ? dev_mc_sync_multiple+0x95/0x120
[ 29.565146][ T1046] dev_mc_sync_multiple+0x95/0x120
[ 29.565793][ T1046] bond_enslave+0x448d/0x47b0 [bonding]
[ 29.566487][ T1046] ? bond_update_slave_arr+0x940/0x940 [bonding]
[ 29.567279][ T1046] ? bstr_printf+0xc20/0xc20
[ 29.567857][ T1046] ? stack_trace_consume_entry+0x160/0x160
[ 29.568614][ T1046] ? deactivate_slab.isra.77+0x2c5/0x800
[ 29.569320][ T1046] ? check_chain_key+0x236/0x5d0
[ 29.569939][ T1046] ? sscanf+0x93/0xc0
[ 29.570442][ T1046] ? vsscanf+0x1e20/0x1e20
[ 29.571003][ T1046] bond_option_slaves_set+0x1a3/0x370 [bonding]
[ ... ]
Fixes: ab92d68fc22f ("net: core: add generic lockdep keys")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
The ending character of the string shoulb be \n, not \b.
Fixes: 17936b43f0fd ("NFC: Standardize logging style")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
A bitset without mask in a _SET request means we want exactly the bits in
the bitset to be set. This works correctly for compact format but when
verbose format is parsed, ethnl_update_bitset32_verbose() only sets the
bits present in the request bitset but does not clear the rest. This can
cause incorrect results like
lion:~ # ethtool eth0 | grep Wake
Supports Wake-on: pumbg
Wake-on: g
lion:~ # ethtool -s eth0 wol u
lion:~ # ethtool eth0 | grep Wake
Supports Wake-on: pumbg
Wake-on: ug
when the second ethtool command issues request
ETHTOOL_MSG_WOL_SET
ETHTOOL_A_WOL_HEADER
ETHTOOL_A_HEADER_DEV_NAME = "eth0"
ETHTOOL_A_WOL_MODES
ETHTOOL_A_BITSET_NOMASK
ETHTOOL_A_BITSET_BITS
ETHTOOL_A_BITSET_BITS_BIT
ETHTOOL_BITSET_BIT_INDEX = 1
Fix the logic by clearing the whole target bitmap before we start iterating
through the request bits.
Fixes: 10b518d4e6dd ("ethtool: netlink bitset handling")
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
We need to ensure that the default VID is untagged otherwise the switch
will be sending tagged frames and the results can be problematic. This
is especially true with b53 switches that use VID 0 as their default
VLAN since VID 0 has a special meaning.
Fixes: fea83353177a ("net: dsa: b53: Fix default VLAN ID")
Fixes: 061f6a505ac3 ("net: dsa: Add ndo_vlan_rx_{add, kill}_vid implementation")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Jason A. Donenfeld says:
====================
wireguard fixes for 5.6-rc2
Here are four fixes for wireguard collected since rc1:
1) Some small cleanups to the test suite to help massively parallel
builds.
2) A change in how we reset our load calculation to avoid a more
expensive comparison, suggested by Matt Dunwoodie.
3) I've been loading more and more of wireguard's surface into
syzkaller, trying to get our coverage as complete as possible,
leading in this case to a fix for mtu=0 devices.
4) A removal of superfluous code, pointed out by Eric Dumazet.
v2 fixes a logical problem in the patch for (3) pointed out by Eric Dumazet. v3
replaces some non-obvious bitmath in (3) with a more obvious expression, and
adds patch (4).
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
synchronize_net() is a wrapper around synchronize_rcu(), so there's no
point in having synchronize_net and synchronize_rcu back to back,
despite the documentation comment suggesting maybe it's somewhat useful,
"Wait for packets currently being received to be done." This commit
removes the extra call.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
It turns out there's an easy way to get packets queued up while still
having an MTU of zero, and that's via persistent keep alive. This commit
makes sure that in whatever condition, we don't wind up dividing by
zero. Note that an MTU of zero for a wireguard interface is something
quasi-valid, so I don't think the correct fix is to limit it via
min_mtu. This can be reproduced easily with:
ip link add wg0 type wireguard
ip link add wg1 type wireguard
ip link set wg0 up mtu 0
ip link set wg1 up
wg set wg0 private-key <(wg genkey)
wg set wg1 listen-port 1 private-key <(wg genkey) peer $(wg show wg0 public-key)
wg set wg0 peer $(wg show wg1 public-key) persistent-keepalive 1 endpoint 127.0.0.1:1
However, while min_mtu=0 seems fine, it makes sense to restrict the
max_mtu. This commit also restricts the maximum MTU to the greatest
number for which rounding up to the padding multiple won't overflow a
signed integer. Packets this large were always rejected anyway
eventually, due to checks deeper in, but it seems more sound not to even
let the administrator configure something that won't work anyway.
We use this opportunity to clean up this function a bit so that it's
clear which paths we're expecting.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
This is a small optimization that prevents more expensive comparisons
from happening when they are no longer necessary, by clearing the
last_under_load variable whenever we wind up in a state where we were
under load but we no longer are.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Suggested-by: Matt Dunwoodie <ncon@noconroy.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
This gives us fewer dependencies and shortens build time, fixes up some
hash checking race conditions, and also fixes missing directory creation
that caused issues on massively parallel builds.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Userspace should not be able to directly manipulate subflow socket
options before a connection is established since it is not yet known if
it will be an MPTCP subflow or a TCP fallback subflow. TCP fallback
subflows can be more directly controlled by userspace because they are
regular TCP connections, while MPTCP subflow sockets need to be
configured for the specific needs of MPTCP. Use the same logic as
sendmsg/recvmsg to ensure that socket option calls are only passed
through to known TCP fallback subflows.
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
The mii management register in iproc mdio block
does not have a retention register so it is lost on suspend.
Save and restore value of register while resuming from suspend.
Fixes: bb1a619735b4 ("net: phy: Initialize mdio clock at probe function")
Signed-off-by: Arun Parameswaran <arun.parameswaran@broadcom.com>
Signed-off-by: Scott Branden <scott.branden@broadcom.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
netdev_name_node_alt_destroy() does a lookup over all
device names of a namespace.
We need to make sure the name belongs to the device
of interest, and that we do not destroy its primary
name, since we rely on it being not deleted :
dev->name_node would indeed point to freed memory.
syzbot report was the following :
BUG: KASAN: use-after-free in dev_net include/linux/netdevice.h:2206 [inline]
BUG: KASAN: use-after-free in mld_force_mld_version net/ipv6/mcast.c:1172 [inline]
BUG: KASAN: use-after-free in mld_in_v2_mode_only net/ipv6/mcast.c:1180 [inline]
BUG: KASAN: use-after-free in mld_in_v1_mode+0x203/0x230 net/ipv6/mcast.c:1190
Read of size 8 at addr ffff88809886c588 by task swapper/1/0
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.6.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x197/0x210 lib/dump_stack.c:118
print_address_description.constprop.0.cold+0xd4/0x30b mm/kasan/report.c:374
__kasan_report.cold+0x1b/0x32 mm/kasan/report.c:506
kasan_report+0x12/0x20 mm/kasan/common.c:641
__asan_report_load8_noabort+0x14/0x20 mm/kasan/generic_report.c:135
dev_net include/linux/netdevice.h:2206 [inline]
mld_force_mld_version net/ipv6/mcast.c:1172 [inline]
mld_in_v2_mode_only net/ipv6/mcast.c:1180 [inline]
mld_in_v1_mode+0x203/0x230 net/ipv6/mcast.c:1190
mld_send_initial_cr net/ipv6/mcast.c:2083 [inline]
mld_dad_timer_expire+0x24/0x230 net/ipv6/mcast.c:2118
call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404
expire_timers kernel/time/timer.c:1449 [inline]
__run_timers kernel/time/timer.c:1773 [inline]
__run_timers kernel/time/timer.c:1740 [inline]
run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786
__do_softirq+0x262/0x98c kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x19b/0x1e0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:546 [inline]
smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1146
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
</IRQ>
RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61
Code: 68 73 c5 f9 eb 8a cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 94 be 59 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 84 be 59 00 fb f4 <c3> cc 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 de 2a 74 f9 e8 09
RSP: 0018:ffffc90000d3fd68 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff136761a RBX: ffff8880a99fc340 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffff8880a99fcbd4
RBP: ffffc90000d3fd98 R08: ffff8880a99fc340 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: ffffffff8aa5a1c0 R14: 0000000000000000 R15: 0000000000000001
arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:686
default_idle_call+0x84/0xb0 kernel/sched/idle.c:94
cpuidle_idle_call kernel/sched/idle.c:154 [inline]
do_idle+0x3c8/0x6e0 kernel/sched/idle.c:269
cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:361
start_secondary+0x2f4/0x410 arch/x86/kernel/smpboot.c:264
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:242
Allocated by task 10229:
save_stack+0x23/0x90 mm/kasan/common.c:72
set_track mm/kasan/common.c:80 [inline]
__kasan_kmalloc mm/kasan/common.c:515 [inline]
__kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:488
kasan_kmalloc+0x9/0x10 mm/kasan/common.c:529
__do_kmalloc_node mm/slab.c:3616 [inline]
__kmalloc_node+0x4e/0x70 mm/slab.c:3623
kmalloc_node include/linux/slab.h:578 [inline]
kvmalloc_node+0x68/0x100 mm/util.c:574
kvmalloc include/linux/mm.h:645 [inline]
kvzalloc include/linux/mm.h:653 [inline]
alloc_netdev_mqs+0x98/0xe40 net/core/dev.c:9797
rtnl_create_link+0x22d/0xaf0 net/core/rtnetlink.c:3047
__rtnl_newlink+0xf9f/0x1790 net/core/rtnetlink.c:3309
rtnl_newlink+0x69/0xa0 net/core/rtnetlink.c:3377
rtnetlink_rcv_msg+0x45e/0xaf0 net/core/rtnetlink.c:5438
netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477
rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5456
netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
netlink_unicast+0x59e/0x7e0 net/netlink/af_netlink.c:1328
netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1917
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg+0xd7/0x130 net/socket.c:672
__sys_sendto+0x262/0x380 net/socket.c:1998
__do_compat_sys_socketcall net/compat.c:771 [inline]
__se_compat_sys_socketcall net/compat.c:719 [inline]
__ia32_compat_sys_socketcall+0x530/0x710 net/compat.c:719
do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline]
do_fast_syscall_32+0x27b/0xe16 arch/x86/entry/common.c:408
entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
Freed by task 10229:
save_stack+0x23/0x90 mm/kasan/common.c:72
set_track mm/kasan/common.c:80 [inline]
kasan_set_free_info mm/kasan/common.c:337 [inline]
__kasan_slab_free+0x102/0x150 mm/kasan/common.c:476
kasan_slab_free+0xe/0x10 mm/kasan/common.c:485
__cache_free mm/slab.c:3426 [inline]
kfree+0x10a/0x2c0 mm/slab.c:3757
__netdev_name_node_alt_destroy+0x1ff/0x2a0 net/core/dev.c:322
netdev_name_node_alt_destroy+0x57/0x80 net/core/dev.c:334
rtnl_alt_ifname net/core/rtnetlink.c:3518 [inline]
rtnl_linkprop.isra.0+0x575/0x6f0 net/core/rtnetlink.c:3567
rtnl_dellinkprop+0x46/0x60 net/core/rtnetlink.c:3588
rtnetlink_rcv_msg+0x45e/0xaf0 net/core/rtnetlink.c:5438
netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477
rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5456
netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
netlink_unicast+0x59e/0x7e0 net/netlink/af_netlink.c:1328
netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1917
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg+0xd7/0x130 net/socket.c:672
____sys_sendmsg+0x753/0x880 net/socket.c:2343
___sys_sendmsg+0x100/0x170 net/socket.c:2397
__sys_sendmsg+0x105/0x1d0 net/socket.c:2430
__compat_sys_sendmsg net/compat.c:642 [inline]
__do_compat_sys_sendmsg net/compat.c:649 [inline]
__se_compat_sys_sendmsg net/compat.c:646 [inline]
__ia32_compat_sys_sendmsg+0x7a/0xb0 net/compat.c:646
do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline]
do_fast_syscall_32+0x27b/0xe16 arch/x86/entry/common.c:408
entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
The buggy address belongs to the object at ffff88809886c000
which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 1416 bytes inside of
4096-byte region [ffff88809886c000, ffff88809886d000)
The buggy address belongs to the page:
page:ffffea0002621b00 refcount:1 mapcount:0 mapping:ffff8880aa402000 index:0x0 compound_mapcount: 0
flags: 0xfffe0000010200(slab|head)
raw: 00fffe0000010200 ffffea0002610d08 ffffea0002607608 ffff8880aa402000
raw: 0000000000000000 ffff88809886c000 0000000100000001 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff88809886c480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88809886c500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88809886c580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88809886c600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88809886c680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
Fixes: 36fbf1e52bd3 ("net: rtnetlink: add linkprop commands to add and delete alternative ifnames")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Jiri Pirko <jiri@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Igor Russkikh says:
====================
Marvell atlantic 2020/02 updates
Hi David, here is another set of bugfixes on AQC family found on
last integration phase.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
fix static checker warning:
drivers/net/ethernet/aquantia/atlantic/aq_filters.c:166 aq_check_approve_fvlan()
error: passing untrusted data to 'test_bit()'
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 7975d2aff5af: ("net: aquantia: add support of rx-vlan-filter offload")
Signed-off-by: Dmitry Bogdanov <dbogdanov@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
during hibernation freeze, aq_nic_stop could be invoked
on a stopped device. That may cause panic on access to
not yet allocated vector/ring structures.
Add a check to stop device if it is not yet stopped.
Similiarly after freeze in hibernation thaw, aq_nic_start
could be invoked on a not initialized net device.
Result will be the same.
Add a check to start device if it is initialized.
In our case, this is the same as started.
Fixes: 8aaa112a57c1 ("net: atlantic: refactoring pm logic")
Signed-off-by: Pavel Belous <pbelous@marvell.com>
Signed-off-by: Nikita Danilov <ndanilov@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Dmitry Bogdanov <dbogdanov@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Code inspection found that in case of mapping error we do return current
'ret' value. But beside error, it is used to count number of descriptors
allocated for the packet. In that case map_skb function could return '1'.
Changing it to return zero (number of mapped descriptors for skb)
Fixes: 018423e90bee ("net: ethernet: aquantia: Add ring support code")
Signed-off-by: Pavel Belous <pbelous@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Dmitry Bogdanov <dbogdanov@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
skb->len is used to calculate statistics after xmit invocation.
Under a stress load it may happen that skb will be xmited,
rx interrupt will come and skb will be freed, all before xmit function
is even returned.
Eventually, skb->len will access unallocated area.
Moving stats calculation into tx_clean routine.
Fixes: 018423e90bee ("net: ethernet: aquantia: Add ring support code")
Reported-by: Christophe Vu-Brugier <cvubrugier@fastmail.fm>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Pavel Belous <pbelous@marvell.com>
Signed-off-by: Dmitry Bogdanov <dbogdanov@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Add checks to not enable multiple loopback modes simultaneously,
It was also discovered that for dma loopback to function correctly
promisc mode should be enabled on device.
Fixes: ea4b4d7fc106 ("net: atlantic: loopback tests via private flags")
Signed-off-by: Nikita Danilov <ndanilov@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Dmitry Bogdanov <dbogdanov@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Clock adjustment data should be passed to FW as well, otherwise in some
cases a drift was observed when using GPIO features.
Signed-off-by: Egor Pomozov <epomozov@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Dmitry Bogdanov <dbogdanov@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Artificial HW reliability tests revealed a possible hangup in
the driver. Normally, when device disappears from bus, all
register reads returns 0xFFFFFFFF.
At remote procedure invocation towards FW there is a logic
where result is compared with -1 in a loop.
That caused an infinite loop if hardware due to some issues
disappears from bus.
Add extra result checks to prevent this.
Signed-off-by: Dmitry Bogdanov <dbogdanov@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Yet another checksum offload compatibility issue was found.
The known issue is that AQC HW marks tcp packets with 0xFFFF checksum
as invalid (1). This is workarounded in driver, passing all the suspicious
packets up to the stack for further csum validation.
Another HW problem (2) is that it hides invalid csum of LRO aggregated
packets inside of the individual descriptors. That was workarounded
by forced scan of all LRO descriptors for checksum errors.
However the scan logic was joint for both LRO and multi-descriptor
packets (jumbos). And this causes the issue.
We have to drop LRO packets with the detected bad checksum
because of (2), but we have to pass jumbo packets to stack because of (1).
When using windows tcp partner with jumbo frames but with LSO disabled
driver discards such frames as bad checksummed. But only LRO frames
should be dropped, not jumbos.
On such a configurations tcp stream have a chance of drops and stucks.
(1) 76f254d4afe2 ("net: aquantia: tcp checksum 0xffff being handled incorrectly")
(2) d08b9a0a3ebd ("net: aquantia: do not pass lro session with invalid tcp checksum")
Fixes: d08b9a0a3ebd ("net: aquantia: do not pass lro session with invalid tcp checksum")
Signed-off-by: Dmitry Bezrukov <dbezrukov@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Dmitry Bogdanov <dbogdanov@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
After commit 71130f29979c ("vxlan: fix tos value before xmit") we start
strict vxlan xmit tos value by RT_TOS(), which limits the tos value less
than 0x1E. With current value 0x40 the test will failed with "v1: Expected
to capture 10 packets, got 0". So let's choose a smaller tos value for
testing.
Fixes: d417ecf533fe ("selftests: forwarding: vxlan_bridge_1d: Add a TOS test")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Since IFLA_ALT_IFNAME is an NLA_STRING, we have no
guarantee it is nul terminated.
We should use nla_strdup() instead of kstrdup(), since this
helper will make sure not accessing out-of-bounds data.
BUG: KMSAN: uninit-value in strlen+0x5e/0xa0 lib/string.c:535
CPU: 1 PID: 19157 Comm: syz-executor.5 Not tainted 5.5.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1c9/0x220 lib/dump_stack.c:118
kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:118
__msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215
strlen+0x5e/0xa0 lib/string.c:535
kstrdup+0x7f/0x1a0 mm/util.c:59
rtnl_alt_ifname net/core/rtnetlink.c:3495 [inline]
rtnl_linkprop+0x85d/0xc00 net/core/rtnetlink.c:3553
rtnl_newlinkprop+0x9d/0xb0 net/core/rtnetlink.c:3568
rtnetlink_rcv_msg+0x1153/0x1570 net/core/rtnetlink.c:5424
netlink_rcv_skb+0x451/0x650 net/netlink/af_netlink.c:2477
rtnetlink_rcv+0x50/0x60 net/core/rtnetlink.c:5442
netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
netlink_unicast+0xf9e/0x1100 net/netlink/af_netlink.c:1328
netlink_sendmsg+0x1248/0x14d0 net/netlink/af_netlink.c:1917
sock_sendmsg_nosec net/socket.c:639 [inline]
sock_sendmsg net/socket.c:659 [inline]
____sys_sendmsg+0x12b6/0x1350 net/socket.c:2330
___sys_sendmsg net/socket.c:2384 [inline]
__sys_sendmsg+0x451/0x5f0 net/socket.c:2417
__do_sys_sendmsg net/socket.c:2426 [inline]
__se_sys_sendmsg+0x97/0xb0 net/socket.c:2424
__x64_sys_sendmsg+0x4a/0x70 net/socket.c:2424
do_syscall_64+0xb8/0x160 arch/x86/entry/common.c:296
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45b3b9
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ff1c7b1ac78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ff1c7b1b6d4 RCX: 000000000045b3b9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000009cb R14: 00000000004cb3dd R15: 000000000075bf2c
Uninit was created at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:144 [inline]
kmsan_internal_poison_shadow+0x66/0xd0 mm/kmsan/kmsan.c:127
kmsan_slab_alloc+0x8a/0xe0 mm/kmsan/kmsan_hooks.c:82
slab_alloc_node mm/slub.c:2774 [inline]
__kmalloc_node_track_caller+0xb40/0x1200 mm/slub.c:4382
__kmalloc_reserve net/core/skbuff.c:141 [inline]
__alloc_skb+0x2fd/0xac0 net/core/skbuff.c:209
alloc_skb include/linux/skbuff.h:1049 [inline]
netlink_alloc_large_skb net/netlink/af_netlink.c:1174 [inline]
netlink_sendmsg+0x7d3/0x14d0 net/netlink/af_netlink.c:1892
sock_sendmsg_nosec net/socket.c:639 [inline]
sock_sendmsg net/socket.c:659 [inline]
____sys_sendmsg+0x12b6/0x1350 net/socket.c:2330
___sys_sendmsg net/socket.c:2384 [inline]
__sys_sendmsg+0x451/0x5f0 net/socket.c:2417
__do_sys_sendmsg net/socket.c:2426 [inline]
__se_sys_sendmsg+0x97/0xb0 net/socket.c:2424
__x64_sys_sendmsg+0x4a/0x70 net/socket.c:2424
do_syscall_64+0xb8/0x160 arch/x86/entry/common.c:296
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Fixes: 36fbf1e52bd3 ("net: rtnetlink: add linkprop commands to add and delete alternative ifnames")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jiri Pirko <jiri@mellanox.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Because of autosuspend, at91ether_start is called with clocks disabled.
Ensure that pm_runtime doesn't suspend the interface as soon as it is
opened as there is no pm_runtime support is the other relevant parts of the
platform support for at91rm9200.
Fixes: d54f89af6cc4 ("net: macb: Add pm runtime support")
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
In 709772e6e06564ed94ba740de70185ac3d792773, RT_TABLE_COMPAT was added to
allow legacy software to deal with routing table numbers >= 256, but the
same change to FIB rule queries was overlooked.
Signed-off-by: Jethro Beekman <jethro@fortanix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Convert net/rds to use the newly introduces pin_user_pages() API,
which properly sets FOLL_PIN. Setting FOLL_PIN is now required for
code that requires tracking of pinned pages.
Note that this effectively changes the code's behavior: it now
ultimately calls set_page_dirty_lock(), instead of set_page_dirty().
This is probably more accurate.
As Christoph Hellwig put it, "set_page_dirty() is only safe if we are
dealing with a file backed page where we have reference on the inode it
hangs off." [1]
[1] https://lore.kernel.org/r/20190723153640.GB720@lst.de
Cc: Hans Westgaard Ry <hans.westgaard.ry@oracle.com>
Cc: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
When splitting an RTA_MULTIPATH request into multiple routes and adding the
second and later components, we must not simply remove NLM_F_REPLACE but
instead replace it by NLM_F_CREATE. Otherwise, it may look like the netlink
message was malformed.
For example,
ip route add 2001:db8::1/128 dev dummy0
ip route change 2001:db8::1/128 nexthop via fe80::30:1 dev dummy0 \
nexthop via fe80::30:2 dev dummy0
results in the following warnings:
[ 1035.057019] IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE
[ 1035.057517] IPv6: NLM_F_CREATE should be set when creating new route
This patch makes the nlmsg sequence look equivalent for __ip6_ins_rt() to
what it would get if the multipath route had been added in multiple netlink
operations:
ip route add 2001:db8::1/128 dev dummy0
ip route change 2001:db8::1/128 nexthop via fe80::30:1 dev dummy0
ip route append 2001:db8::1/128 nexthop via fe80::30:2 dev dummy0
Fixes: 27596472473a ("ipv6: fix ECMP route replacement")
Signed-off-by: Benjamin Poirier <bpoirier@cumulusnetworks.com>
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
