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It makes no sense to execute this limit test every time we create a
routing cache entry.
We can't simply error out on these things since we've silently
accepted and truncated them forever.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>
Cc: Sakari Ailus <sakari.ailus@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pablo says:
====================
This is the second batch of Netfilter updates for net-next. It contains the
kernel changes for the new user-space connection tracking helper
infrastructure.
More details on this infrastructure are provides here:
http://lwn.net/Articles/500196/
Still, I plan to provide some official documentation through the
conntrack-tools user manual on how to setup user-space utilities for this.
So far, it provides two helper in user-space, one for NFSv3 and another for
Oracle/SQLnet/TNS. Yet in my TODO list.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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There are good reasons to supports helpers in user-space instead:
* Rapid connection tracking helper development, as developing code
in user-space is usually faster.
* Reliability: A buggy helper does not crash the kernel. Moreover,
we can monitor the helper process and restart it in case of problems.
* Security: Avoid complex string matching and mangling in kernel-space
running in privileged mode. Going further, we can even think about
running user-space helpers as a non-root process.
* Extensibility: It allows the development of very specific helpers (most
likely non-standard proprietary protocols) that are very likely not to be
accepted for mainline inclusion in the form of kernel-space connection
tracking helpers.
This patch adds the infrastructure to allow the implementation of
user-space conntrack helpers by means of the new nfnetlink subsystem
`nfnetlink_cthelper' and the existing queueing infrastructure
(nfnetlink_queue).
I had to add the new hook NF_IP6_PRI_CONNTRACK_HELPER to register
ipv[4|6]_helper which results from splitting ipv[4|6]_confirm into
two pieces. This change is required not to break NAT sequence
adjustment and conntrack confirmation for traffic that is enqueued
to our user-space conntrack helpers.
Basic operation, in a few steps:
1) Register user-space helper by means of `nfct':
nfct helper add ftp inet tcp
[ It must be a valid existing helper supported by conntrack-tools ]
2) Add rules to enable the FTP user-space helper which is
used to track traffic going to TCP port 21.
For locally generated packets:
iptables -I OUTPUT -t raw -p tcp --dport 21 -j CT --helper ftp
For non-locally generated packets:
iptables -I PREROUTING -t raw -p tcp --dport 21 -j CT --helper ftp
3) Run the test conntrackd in helper mode (see example files under
doc/helper/conntrackd.conf
conntrackd
4) Generate FTP traffic going, if everything is OK, then conntrackd
should create expectations (you can check that with `conntrack':
conntrack -E expect
[NEW] 301 proto=6 src=192.168.1.136 dst=130.89.148.12 sport=0 dport=54037 mask-src=255.255.255.255 mask-dst=255.255.255.255 sport=0 dport=65535 master-src=192.168.1.136 master-dst=130.89.148.12 sport=57127 dport=21 class=0 helper=ftp
[DESTROY] 301 proto=6 src=192.168.1.136 dst=130.89.148.12 sport=0 dport=54037 mask-src=255.255.255.255 mask-dst=255.255.255.255 sport=0 dport=65535 master-src=192.168.1.136 master-dst=130.89.148.12 sport=57127 dport=21 class=0 helper=ftp
This confirms that our test helper is receiving packets including the
conntrack information, and adding expectations in kernel-space.
The user-space helper can also store its private tracking information
in the conntrack structure in the kernel via the CTA_HELP_INFO. The
kernel will consider this a binary blob whose layout is unknown. This
information will be included in the information that is transfered
to user-space via glue code that integrates nfnetlink_queue and
ctnetlink.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This attribute can be used to modify and to dump the internal
protocol information.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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User-space programs that receive traffic via NFQUEUE may mangle packets.
If NAT is enabled, this usually puzzles sequence tracking, leading to
traffic disruptions.
With this patch, nfnl_queue will make the corresponding NAT TCP sequence
adjustment if:
1) The packet has been mangled,
2) the NFQA_CFG_F_CONNTRACK flag has been set, and
3) NAT is detected.
There are some records on the Internet complaning about this issue:
http://stackoverflow.com/questions/260757/packet-mangling-utilities-besides-iptables
By now, we only support TCP since we have no helpers for DCCP or SCTP.
Better to add this if we ever have some helper over those layer 4 protocols.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch allows you to include the conntrack information together
with the packet that is sent to user-space via NFQUEUE.
Previously, there was no integration between ctnetlink and
nfnetlink_queue. If you wanted to access conntrack information
from your libnetfilter_queue program, you required to query
ctnetlink from user-space to obtain it. Thus, delaying the packet
processing even more.
Including the conntrack information is optional, you can set it
via NFQA_CFG_F_CONNTRACK flag with the new NFQA_CFG_FLAGS attribute.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch uses the new variable length conntrack extensions.
Instead of using union nf_conntrack_help that contain all the
helper private data information, we allocate variable length
area to store the private helper data.
This patch includes the modification of all existing helpers.
It also includes a couple of include header to avoid compilation
warnings.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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We can now define conntrack extensions of variable size. This
patch is useful to get rid of these unions:
union nf_conntrack_help
union nf_conntrack_proto
union nf_conntrack_nat_help
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch modifies the struct nf_conntrack_helper to allocate
the room for the helper name. The maximum length is 16 bytes
(this was already introduced in 2.6.24).
For the maximum length for expectation policy names, I have
also selected 16 bytes.
This patch is required by the follow-up patch to support
user-space connection tracking helpers.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Conflicts:
net/ipv6/route.c
Pull in 'net' again to get the revert of Thomas's change
which introduced regressions.
Signed-off-by: David S. Miller <davem@davemloft.net>
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/proc/net/ipv6_route"
This reverts commit 2a0c451ade8e1783c5d453948289e4a978d417c9.
It causes crashes, because now ip6_null_entry is used before
it is initialized.
Signed-off-by: David S. Miller <davem@davemloft.net>
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The mtu should be a __be32, not the mark.
Reported-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull NFS client bugfixes from Trond Myklebust:
"Highlights include:
- Fix a couple of mount regressions due to the recent cleanups.
- Fix an Oops in the open recovery code
- Fix an rpc_pipefs upcall hang that results from some of the net
namespace work from 3.4.x (stable kernel candidate).
- Fix a couple of write and o_direct regressions that were found at
last weeks Bakeathon testing event in Ann Arbor."
* tag 'nfs-for-3.5-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFS: add an endian notation for sparse
NFSv4.1: integer overflow in decode_cb_sequence_args()
rpc_pipefs: allow rpc_purge_list to take a NULL waitq pointer
NFSv4 do not send an empty SETATTR compound
NFSv2: EOF incorrectly set on short read
NFS: Use the NFS_DEFAULT_VERSION for v2 and v3 mounts
NFS: fix directio refcount bug on commit
NFSv4: Fix unnecessary delegation returns in nfs4_do_open
NFSv4.1: Convert another trivial printk into a dprintk
NFS4: Fix open bug when pnfs module blacklisted
NFS: Remove incorrect BUG_ON in nfs_found_client
NFS: Map minor mismatch error to protocol not support error.
NFS: Fix a commit bug
NFS4: Set parsed mount data version to 4
NFSv4.1: Ensure we clear session state flags after a session creation
NFSv4.1: Convert a trivial printk into a dprintk
NFSv4: Fix up decode_attr_mdsthreshold
NFSv4: Fix an Oops in the open recovery code
NFSv4.1: Fix a request leak on the back channel
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Conflicts:
net/ipv6/route.c
This deals with a merge conflict between the net-next addition of the
inetpeer network namespace ops, and Thomas Graf's bug fix in
2a0c451ade8e1783c5d453948289e4a978d417c9 which makes sure we don't
register /proc/net/ipv6_route before it is actually safe to do so.
Signed-off-by: David S. Miller <davem@davemloft.net>
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/proc/net/ipv6_route reflects the contents of fib_table_hash. The proc
handler is installed in ip6_route_net_init() whereas fib_table_hash is
allocated in fib6_net_init() _after_ the proc handler has been installed.
This opens up a short time frame to access fib_table_hash with its pants
down.
fib6_init() as a whole can't be moved to an earlier position as it also
registers the rtnetlink message handlers which should be registered at
the end. Therefore split it into fib6_init() which is run early and
fib6_init_late() to register the rtnetlink message handlers.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Reviewed-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Orphaning skb in dev_hard_start_xmit() makes bonding behavior
unfriendly for applications sending big UDP bursts : Once packets
pass the bonding device and come to real device, they might hit a full
qdisc and be dropped. Without orphaning, the sender is automatically
throttled because sk->sk_wmemalloc reaches sk->sk_sndbuf (assuming
sk_sndbuf is not too big)
We could try to defer the orphaning adding another test in
dev_hard_start_xmit(), but all this seems of little gain,
now that BQL tends to make packets more likely to be parked
in Qdisc queues instead of NIC TX ring, in cases where performance
matters.
Reverts commits :
fc6055a5ba31 net: Introduce skb_orphan_try()
87fd308cfc6b net: skb_tx_hash() fix relative to skb_orphan_try()
and removes SKBTX_DRV_NEEDS_SK_REF flag
Reported-and-bisected-by: Jean-Michel Hautbois <jhautbois@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Tested-by: Oliver Hartkopp <socketcan@hartkopp.net>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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One tricky issue on the ipv6 side vs. ipv4 is that the ICMP callouts
to handle the error pass the 32-bit info cookie in network byte order
whereas ipv4 passes it around in host byte order.
Like the ipv4 side, we have two helper functions. One for when we
have a socket context and one for when we do not.
ip6ip6 tunnels are not handled here, because they handle PMTU events
by essentially relaying another ICMP packet-too-big message back to
the original sender.
This patch allows us to get rid of rt6_do_pmtu_disc(). It handles all
kinds of situations that simply cannot happen when we do the PMTU
update directly using a fully resolved route.
In fact, the "plen == 128" check in ip6_rt_update_pmtu() can very
likely be removed or changed into a BUG_ON() check. We should never
have a prefixed ipv6 route when we get there.
Another piece of strange history here is that TCP and DCCP, unlike in
ipv4, never invoke the update_pmtu() method from their ICMP error
handlers. This is incredibly astonishing since this is the context
where we have the most accurate context in which to make a PMTU
update, namely we have a fully connected socket and associated cached
socket route.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Linux 3.5-rc1
Conflicts:
net/ceph/messenger.c
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We need to flush the msgr workqueue during mon_client shutdown to
ensure that any work affecting our embedded ceph_connection is
finished so that we can be safely destroyed.
Previously, we were flushing the work queue after osd_client
shutdown and before mon_client shutdown to ensure that any osd
connection refs to authorizers are flushed. Remove the redundant
flush, and document in the comment that the mon_client flush is
needed to cover that case as well.
Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
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Once we call ->connect(), we are racing against the actual
connection, and a subsequent transition from CONNECTING ->
CONNECTED. Set the state to CONNECTING before that, under the
protection of the mutex, to avoid the race.
This was introduced in 928443cd9644e7cfd46f687dbeffda2d1a357ff9,
with the original socket state code.
Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
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With ip_rt_frag_needed() removed, we have to explicitly update PMTU
information in every ICMP error handler.
Create two helper functions to facilitate this.
1) ipv4_sk_update_pmtu()
This updates the PMTU when we have a socket context to
work with.
2) ipv4_update_pmtu()
Raw version, used when no socket context is available. For this
interface, we essentially just pass in explicit arguments for
the flow identity information we would have extracted from the
socket.
And you'll notice that ipv4_sk_update_pmtu() is simply implemented
in terms of ipv4_update_pmtu()
Note that __ip_route_output_key() is used, rather than something like
ip_route_output_flow() or ip_route_output_key(). This is because we
absolutely do not want to end up with a route that does IPSEC
encapsulation and the like. Instead, we only want the route that
would get us to the node described by the outermost IP header.
Reported-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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HCI_Disconnect should only be sent after connection is established.
If connection is not yet established and HCI_Disconnect is called
then disconnection complete will be received with a handle which
does not exist and hence this event will be ignored.
But as mgmt.c will not receive this event, its variable for pending
command is not cleared.This will result in future Disconnect commands
for that BD Address to be blocked with error busy.
Signed-off-by: Vishal Agarwal <vishal.agarwal@stericsson.com>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Generate the proactive PREQ element as defined in
Sec. 13.10.9.3 (Case C) of IEEE Std. 802.11-2012
based on the selection of dot11MeshHWMPRootMode as follow:
dot11MeshHWMPRootMode (2) is proactivePREQnoPREP
dot11MeshHWMPRootMode (3) is proactivePREQwithPREP
The proactive PREQ is generated based on the interval
defined by dot11MeshHWMProotInterval.
With this change, proactive RANN element is now generated
if the dot11MeshHWMPRootMode is set to (4) instead of (1).
Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
[line-break commit log]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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dot11MeshHWMPactivePathToRootTimeout
Add the mesh configuration parameters dot11MeshHWMProotInterval
and dot11MeshHWMPactivePathToRootTimeout to be used by
proactive PREQ mechanism.
Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
[line-break commit log]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Bogdan Hamciuc diagnosed and fixed following bug in netpoll_send_udp() :
"skb->len += len;" instead of "skb_put(skb, len);"
Meaning that _if_ a network driver needs to call skb_realloc_headroom(),
only packet headers would be copied, leaving garbage in the payload.
However the skb_realloc_headroom() must be avoided as much as possible
since it requires memory and netpoll tries hard to work even if memory
is exhausted (using a pool of preallocated skbs)
It appears netpoll_send_udp() reserved 16 bytes for the ethernet header,
which happens to work for typicall drivers but not all.
Right thing is to use LL_RESERVED_SPACE(dev)
(And also add dev->needed_tailroom of tailroom)
This patch combines both fixes.
Many thanks to Bogdan for raising this issue.
Reported-by: Bogdan Hamciuc <bogdan.hamciuc@freescale.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Tested-by: Bogdan Hamciuc <bogdan.hamciuc@freescale.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Neil Horman <nhorman@tuxdriver.com>
Reviewed-by: Neil Horman <nhorman@tuxdriver.com>
Reviewed-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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EMSGSIZE - ran out of space while constructing message
EOPNOTSUPP - driver/hardware does not support operation
ENODEV - network device not found
EINVAL - invalid message
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Allocating and sending the skb in dcb_doit() allows for much
shorter and cleaner command handling functions.
The huge switch statement is replaced with an array based definition
of the handling function and reply message type.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is no need to allocate and send the reply message in each
handling function separately. Instead, the reply skb can be allocated
and sent in dcb_doit() directly.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
Conflicts:
drivers/net/wireless/ath/ath9k/main.c
net/bluetooth/hci_event.c
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Dave Jones reported a kernel BUG at mm/slub.c:3474! triggered
by splice_shrink_spd() called from vmsplice_to_pipe()
commit 35f3d14dbbc5 (pipe: add support for shrinking and growing pipes)
added capability to adjust pipe->buffers.
Problem is some paths don't hold pipe mutex and assume pipe->buffers
doesn't change for their duration.
Fix this by adding nr_pages_max field in struct splice_pipe_desc, and
use it in place of pipe->buffers where appropriate.
splice_shrink_spd() loses its struct pipe_inode_info argument.
Reported-by: Dave Jones <davej@redhat.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Tom Herbert <therbert@google.com>
Cc: stable <stable@vger.kernel.org> # 2.6.35
Tested-by: Dave Jones <davej@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next
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git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
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It should be NL80211_SCHED_SCAN_MATCH_ATTR_SSID as
documented, not NL80211_ATTR_SCHED_SCAN_MATCH_SSID.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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If you add a monitor interface in parallel to a normal interface
mac80211 will let you to change the channel type on the monitor
interface even if you are connected. Add an explicit check to
disallow this.
Signed-off-by: Pontus Fuchs <pontus.fuchs@gmail.com>
[fix typo in commit log, use sdata instead of netdev]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Stop connection monitor poll during disassociation.
This clears the polling flags and if a scan was
deferred it will be run.
Without this fix, if a scan was deferred due to
connection monitoring while disassociation happens,
this scan blocks further scan requests until interface
down/up which causes problems connecting to another AP.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Otherwise, we might call the driver callback before
the interface was uploaded.
Solves the following warning:
WARNING: at net/mac80211/driver-ops.h:12 ieee80211_set_bitrate_mask+0xbc/0x18c [mac80211]()
wlan0: Failed check-sdata-in-driver check, flags: 0x0
Modules linked in: wlcore_sdio wl12xx wl18xx wlcore mac80211 cfg80211 [last unloaded: cfg80211]
[<c001b964>] (unwind_backtrace+0x0/0x12c) from [<c0495550>] (dump_stack+0x20/0x24)
[<c0495550>] (dump_stack+0x20/0x24) from [<c003ee28>] (warn_slowpath_common+0x5c/0x74)
[<c003ee28>] (warn_slowpath_common+0x5c/0x74) from [<c003eefc>] (warn_slowpath_fmt+0x40/0x48)
[<c003eefc>] (warn_slowpath_fmt+0x40/0x48) from [<bf5c1ad0>] (ieee80211_set_bitrate_mask+0xbc/0x18c [mac80211])
[<bf5c1ad0>] (ieee80211_set_bitrate_mask+0xbc/0x18c [mac80211]) from [<bf575960>] (nl80211_set_tx_bitrate_mask+0x350/0x358 [cfg80211])
[<bf575960>] (nl80211_set_tx_bitrate_mask+0x350/0x358 [cfg80211]) from [<c03e9e94>] (genl_rcv_msg+0x1a8/0x1e8)
[<c03e9e94>] (genl_rcv_msg+0x1a8/0x1e8) from [<c03e9164>] (netlink_rcv_skb+0x5c/0xc0)
[<c03e9164>] (netlink_rcv_skb+0x5c/0xc0) from [<c03e9ce0>] (genl_rcv+0x28/0x34)
[<c03e9ce0>] (genl_rcv+0x28/0x34) from [<c03e8e74>] (netlink_unicast+0x158/0x234)
[<c03e8e74>] (netlink_unicast+0x158/0x234) from [<c03e93e0>] (netlink_sendmsg+0x218/0x298)
[<c03e93e0>] (netlink_sendmsg+0x218/0x298) from [<c03b4e5c>] (sock_sendmsg+0xa4/0xc0)
[<c03b4e5c>] (sock_sendmsg+0xa4/0xc0) from [<c03b5af4>] (__sys_sendmsg+0x1d8/0x254)
[<c03b5af4>] (__sys_sendmsg+0x1d8/0x254) from [<c03b5ca8>] (sys_sendmsg+0x4c/0x70)
[<c03b5ca8>] (sys_sendmsg+0x4c/0x70) from [<c0013980>] (ret_fast_syscall+0x0/0x3c)
Note that calling the driver can also result
in undefined behaviour since it doesn't have
to deal with calls while down.
Signed-off-by: Eliad Peller <eliad@wizery.com>
[removed timestamps, added note - Johannes]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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reg_timeout_work() calls restore_regulatory_settings() which
takes cfg80211_mutex.
reg_set_request_processed() already holds cfg80211_mutex
before calling cancel_delayed_work_sync(reg_timeout),
so it might deadlock.
Call the async cancel_delayed_work instead, in order
to avoid the potential deadlock.
This is the relevant lockdep warning:
cfg80211: Calling CRDA for country: XX
======================================================
[ INFO: possible circular locking dependency detected ]
3.4.0-rc5-wl+ #26 Not tainted
-------------------------------------------------------
kworker/0:2/1391 is trying to acquire lock:
(cfg80211_mutex){+.+.+.}, at: [<bf28ae00>] restore_regulatory_settings+0x34/0x418 [cfg80211]
but task is already holding lock:
((reg_timeout).work){+.+...}, at: [<c0059e94>] process_one_work+0x1f0/0x480
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 ((reg_timeout).work){+.+...}:
[<c008fd44>] validate_chain+0xb94/0x10f0
[<c0090b68>] __lock_acquire+0x8c8/0x9b0
[<c0090d40>] lock_acquire+0xf0/0x114
[<c005b600>] wait_on_work+0x4c/0x154
[<c005c000>] __cancel_work_timer+0xd4/0x11c
[<c005c064>] cancel_delayed_work_sync+0x1c/0x20
[<bf28b274>] reg_set_request_processed+0x50/0x78 [cfg80211]
[<bf28bd84>] set_regdom+0x550/0x600 [cfg80211]
[<bf294cd8>] nl80211_set_reg+0x218/0x258 [cfg80211]
[<c03c7738>] genl_rcv_msg+0x1a8/0x1e8
[<c03c6a00>] netlink_rcv_skb+0x5c/0xc0
[<c03c7584>] genl_rcv+0x28/0x34
[<c03c6720>] netlink_unicast+0x15c/0x228
[<c03c6c7c>] netlink_sendmsg+0x218/0x298
[<c03933c8>] sock_sendmsg+0xa4/0xc0
[<c039406c>] __sys_sendmsg+0x1e4/0x268
[<c0394228>] sys_sendmsg+0x4c/0x70
[<c0013840>] ret_fast_syscall+0x0/0x3c
-> #1 (reg_mutex){+.+.+.}:
[<c008fd44>] validate_chain+0xb94/0x10f0
[<c0090b68>] __lock_acquire+0x8c8/0x9b0
[<c0090d40>] lock_acquire+0xf0/0x114
[<c04734dc>] mutex_lock_nested+0x48/0x320
[<bf28b2cc>] reg_todo+0x30/0x538 [cfg80211]
[<c0059f44>] process_one_work+0x2a0/0x480
[<c005a4b4>] worker_thread+0x1bc/0x2bc
[<c0061148>] kthread+0x98/0xa4
[<c0014af4>] kernel_thread_exit+0x0/0x8
-> #0 (cfg80211_mutex){+.+.+.}:
[<c008ed58>] print_circular_bug+0x68/0x2cc
[<c008fb28>] validate_chain+0x978/0x10f0
[<c0090b68>] __lock_acquire+0x8c8/0x9b0
[<c0090d40>] lock_acquire+0xf0/0x114
[<c04734dc>] mutex_lock_nested+0x48/0x320
[<bf28ae00>] restore_regulatory_settings+0x34/0x418 [cfg80211]
[<bf28b200>] reg_timeout_work+0x1c/0x20 [cfg80211]
[<c0059f44>] process_one_work+0x2a0/0x480
[<c005a4b4>] worker_thread+0x1bc/0x2bc
[<c0061148>] kthread+0x98/0xa4
[<c0014af4>] kernel_thread_exit+0x0/0x8
other info that might help us debug this:
Chain exists of:
cfg80211_mutex --> reg_mutex --> (reg_timeout).work
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock((reg_timeout).work);
lock(reg_mutex);
lock((reg_timeout).work);
lock(cfg80211_mutex);
*** DEADLOCK ***
2 locks held by kworker/0:2/1391:
#0: (events){.+.+.+}, at: [<c0059e94>] process_one_work+0x1f0/0x480
#1: ((reg_timeout).work){+.+...}, at: [<c0059e94>] process_one_work+0x1f0/0x480
stack backtrace:
[<c001b928>] (unwind_backtrace+0x0/0x12c) from [<c0471d3c>] (dump_stack+0x20/0x24)
[<c0471d3c>] (dump_stack+0x20/0x24) from [<c008ef70>] (print_circular_bug+0x280/0x2cc)
[<c008ef70>] (print_circular_bug+0x280/0x2cc) from [<c008fb28>] (validate_chain+0x978/0x10f0)
[<c008fb28>] (validate_chain+0x978/0x10f0) from [<c0090b68>] (__lock_acquire+0x8c8/0x9b0)
[<c0090b68>] (__lock_acquire+0x8c8/0x9b0) from [<c0090d40>] (lock_acquire+0xf0/0x114)
[<c0090d40>] (lock_acquire+0xf0/0x114) from [<c04734dc>] (mutex_lock_nested+0x48/0x320)
[<c04734dc>] (mutex_lock_nested+0x48/0x320) from [<bf28ae00>] (restore_regulatory_settings+0x34/0x418 [cfg80211])
[<bf28ae00>] (restore_regulatory_settings+0x34/0x418 [cfg80211]) from [<bf28b200>] (reg_timeout_work+0x1c/0x20 [cfg80211])
[<bf28b200>] (reg_timeout_work+0x1c/0x20 [cfg80211]) from [<c0059f44>] (process_one_work+0x2a0/0x480)
[<c0059f44>] (process_one_work+0x2a0/0x480) from [<c005a4b4>] (worker_thread+0x1bc/0x2bc)
[<c005a4b4>] (worker_thread+0x1bc/0x2bc) from [<c0061148>] (kthread+0x98/0xa4)
[<c0061148>] (kthread+0x98/0xa4) from [<c0014af4>] (kernel_thread_exit+0x0/0x8)
cfg80211: Calling CRDA to update world regulatory domain
cfg80211: World regulatory domain updated:
cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Cc: stable@kernel.org
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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|
In my redesign of remain-on-channel I forgot
that an item could be cancelled when it's a
dependent item that is part of another item.
Allow cancelling such items by removing them
from the dependents list.
Note that when we cancel the main item, all
its dependents are also cancelled. It would
be possible to not do that, but would need
tricks to promote an item from dependent to
top-level and is tricky in the HW ROC case.
Reported-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Conflicts:
MAINTAINERS
drivers/net/wireless/iwlwifi/pcie/trans.c
The iwlwifi conflict was resolved by keeping the code added
in 'net' that turns off the buggy chip feature.
The MAINTAINERS conflict was merely overlapping changes, one
change updated all the wireless web site URLs and the other
changed some GIT trees to be Johannes's instead of John's.
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch replaces the magic value of variable 'reason' by the
proper macro.
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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Change flags field to matches userspace structure.
This field needs to be converted to little endian before forward it.
Signed-off-by: Jefferson Delfes <jefferson.delfes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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'Get' commands should generally not require CAP_NET_ADMIN, with
the exception of those that expose internal state.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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