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git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
A few patches have accumulated, among them the fix for Linus's
four-way-handshake problem. The others are various small fixes
for problems all over, nothing really stands out.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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The current minstrel_ht rate control behavior is somewhat optimistic in
trying to find optimum TX rate. While this is usually fine for normal
Data frames, there are cases where a more conservative set of retry
parameters would be beneficial to make the connection more robust.
EAPOL frames are critical to the authentication and especially the
EAPOL-Key message 4/4 (the last message in the 4-way handshake) is
important to get through to the AP. If that message is lost, the only
recovery mechanism in many cases is to reassociate with the AP and start
from scratch. This can often be avoided by trying to send the frame with
more conservative rate and/or with more link layer retries.
In most cases, minstrel_ht is currently using the initial EAPOL-Key
frames for probing higher rates and this results in only five link layer
transmission attempts (one at high(ish) MCS and four at MCS0). While
this works with most APs, it looks like there are some deployed APs that
may have issues with the EAPOL frames using HT MCS immediately after
association. Similarly, there may be issues in cases where the signal
strength or radio environment is not good enough to be able to get
frames through even at couple of MCS 0 tries.
The best approach for this would likely to be to reduce the TX rate for
the last rate (3rd rate parameter in the set) to a low basic rate (say,
6 Mbps on 5 GHz and 2 or 5.5 Mbps on 2.4 GHz), but doing that cleanly
requires some more effort. For now, we can start with a simple one-liner
that forces the minimum rate to be used for EAPOL frames similarly how
the TX rate is selected for the IEEE 802.11 Management frames. This does
result in a small extra latency added to the cases where the AP would be
able to receive the higher rate, but taken into account how small number
of EAPOL frames are used, this is likely to be insignificant. A future
optimization in the minstrel_ht design can also allow this patch to be
reverted to get back to the more optimized initial TX rate.
It should also be noted that many drivers that do not use minstrel as
the rate control algorithm are already doing similar workarounds by
forcing the lowest TX rate to be used for EAPOL frames.
Cc: stable@vger.kernel.org
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Tested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Commit 06d961a8e210 ("mac80211/minstrel: use the new rate control API")
inverted the condition 'if (msr->sample_limit != 0)' to
'if (!msr->sample_limit != 0)'. But it is confusing both to people and
compilers (gcc5):
net/mac80211/rc80211_minstrel.c: In function 'minstrel_get_rate':
net/mac80211/rc80211_minstrel.c:376:26: warning: logical not is only applied to the left hand side of comparison
if (!msr->sample_limit != 0)
^
Let there be only 'if (!msr->sample_limit)'.
Fixes: 06d961a8e210 ("mac80211/minstrel: use the new rate control API")
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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nl80211_exit should be called in cfg80211_init if nl80211_init succeeds
but regulatory_init or create_singlethread_workqueue fails.
Signed-off-by: Junjie Mao <junjie_mao@yeah.net>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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There are currently 8 rules in the world_regdom, but only the first 6
are applied due to an incorrect value for n_reg_rules. This causes
channels 149-165 and 60GHz to be disabled.
Signed-off-by: Jason Abele <jason@aether.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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If monitor flags parsing results in active monitor but that
isn't supported, the already allocated message is leaked.
Fix this by moving the allocation after this check.
Reported-by: Christian Engelmayer <cengelma@gmx.at>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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We currently add nested members of the NL80211_ATTR_SCAN_FREQUENCIES
as NLA_U32 attributes of type NL80211_ATTR_WIPHY_FREQ in
cfg80211_net_detect_results. However, since there can be an arbitrary number of
frequency results, we should use the loop index of the loop used to add the
frequency results to NL80211_ATTR_SCAN_FREQUENCIES as the type (i.e. nla_type)
for each result attribute, rather than a fixed type.
This change is in line with how nested members are added to
NL80211_ATTR_SCAN_FREQUENCIES in the functions nl80211_send_wowlan_nd and
nl80211_add_scan_req.
Signed-off-by: Samuel Tan <samueltan@chromium.org>
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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If ieee80211_vif_use_channel() fails, we have to clear
sdata->radar_required (which we might have just set).
Failing to do it results in stale radar_required field
which prevents starting new scan requests.
Reported-by: Jouni Malinen <j@w1.fi>
Signed-off-by: Eliad Peller <eliad@wizery.com>
[use false instead of 0]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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When applicable verify that the caller has permisson to the underlying
network namespace for a newly created network device.
Similary checks exist for the network namespace a network device will
be created in.
Fixes: 317f4810e45e ("rtnl: allow to create device with IFLA_LINK_NETNSID set")
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When applicable verify that the caller has permision to create a
network device in another network namespace. This check is already
present when moving a network device between network namespaces in
setlink so all that is needed is to duplicate that check in newlink.
This change almost backports cleanly, but there are context conflicts
as the code that follows was added in v4.0-rc1
Fixes: b51642f6d77b net: Enable a userns root rtnl calls that are safe for unprivilged users
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently, all real users of rhashtable default their grow and shrink
decision functions to rht_grow_above_75() and rht_shrink_below_30(),
so that there's currently no need to have this explicitly selectable.
It can/should be generic and private inside rhashtable until a real
use case pops up. Since we can make this private, we'll save us this
additional indirection layer and can improve insertion/deletion time
as well.
Reference: http://patchwork.ozlabs.org/patch/443040/
Suggested-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Before da413eec729d ("packet: Fixed TPACKET V3 to signal poll when block is
closed rather than every packet") poll listening for an af_packet socket was
not signaled if there was no packets to process. After the patch poll is
signaled evety time when block retire timer expires. That happens because
af_packet closes the current block on timeout even if the block is empty.
Passing empty blocks to the user not only wastes CPU but also wastes ring
buffer space increasing probability of packets dropping on small timeouts.
Signed-off-by: Alexander Drozdov <al.drozdov@gmail.com>
Cc: Dan Collins <dan@dcollins.co.nz>
Cc: Willem de Bruijn <willemb@google.com>
Cc: Guy Harris <guy@alum.mit.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Arrays (when not in a struct) "shall have a value greater than zero".
GCC complains when it's not the case here.
Fixes: ba7d49b1f0 ("rtnetlink: provide api for getting and setting slave info")
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently we don't check if the new MTU is valid or not and this allows
one to configure a smaller than minimum allowed by RFCs or even bigger
than interface own MTU, which is a problem as it may lead to packet
drops.
If you have a daemon like NetworkManager running, this may be exploited
by remote attackers by forging RA packets with an invalid MTU, possibly
leading to a DoS. (NetworkManager currently only validates for values
too small, but not for too big ones.)
The fix is just to make sure the new value is valid. That is, between
IPV6_MIN_MTU and interface's MTU.
Note that similar check is already performed at
ndisc_router_discovery(), for when kernel itself parses the RA.
Signed-off-by: Marcelo Ricardo Leitner <mleitner@redhat.com>
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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With commit a7526eb5d06b (net: Unbreak compat_sys_{send,recv}msg), the
MSG_CMSG_COMPAT flag is blocked at the compat syscall entry points,
changing the kernel compat behaviour from the one before the commit it
was trying to fix (1be374a0518a, net: Block MSG_CMSG_COMPAT in
send(m)msg and recv(m)msg).
On 32-bit kernels (!CONFIG_COMPAT), MSG_CMSG_COMPAT is 0 and the native
32-bit sys_sendmsg() allows flag 0x80000000 to be set (it is ignored by
the kernel). However, on a 64-bit kernel, the compat ABI is different
with commit a7526eb5d06b.
This patch changes the compat_sys_{send,recv}msg behaviour to the one
prior to commit 1be374a0518a.
The problem was found running 32-bit LTP (sendmsg01) binary on an arm64
kernel. Arguably, LTP should not pass 0xffffffff as flags to sendmsg()
but the general rule is not to break user ABI (even when the user
behaviour is not entirely sane).
Fixes: a7526eb5d06b (net: Unbreak compat_sys_{send,recv}msg)
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Use helper functions to access current->state.
Direct assignments are prone to races and therefore buggy.
current->state = TASK_RUNNING can be replaced by __set_current_state()
Thanks to Peter Zijlstra for the exact definition of the problem.
Suggested-By: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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tcp_should_expand_sndbuf() does not expand the send buffer if we have
filled the congestion window.
However, it should use tcp_packets_in_flight() instead of
tp->packets_out to make this check.
Testing has established that the difference matters a lot if there are
many SACKed packets, causing a needless performance shortfall.
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Nandita Dukkipati <nanditad@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Trying to use burst capability (aka xmit_more) on a virtual device
like bonding is not supported.
For example, skb might be queued multiple times on a qdisc, with
various list corruptions.
Fixes: 38b2cf2982dc ("net: pktgen: packet bursting via skb->xmit_more")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Packets defragmentation was introduced for PACKET_FANOUT_HASH only,
see 7736d33f4262 ("packet: Add pre-defragmentation support for ipv4
fanouts")
It may be useful to have defragmentation enabled regardless of
fanout type. Without that, the AF_PACKET user may have to:
1. Collect fragments from different rings
2. Defragment by itself
Signed-off-by: Alexander Drozdov <al.drozdov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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colons are used as a separator in netdev device lookup in dev_ioctl.c
Specific functions are SIOCGIFTXQLEN SIOCETHTOOL SIOCSIFNAME
Signed-off-by: Matthew Thode <mthode@mthode.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pablo Neira Ayuso says:
====================
Netfilter/IPVS fixes for net
The following patchset contains updates for your net tree, they are:
1) Fix removal of destination in IPVS when the new mixed family support
is used, from Alexey Andriyanov via Simon Horman.
2) Fix module refcount undeflow in nft_compat when reusing a match /
target.
3) Fix iptables-restore when the recent match is used with a new hitcount
that exceeds threshold, from Florian Westphal.
4) Fix stack corruption in xt_socket due to using stack storage to save
the inner IPv6 header, from Eric Dumazet.
I'll follow up soon with another batch with more fixes that are still
cooking.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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As soon as extract_icmp6_fields() returns, its local storage (automatic
variables) is deallocated and can be overwritten.
Lets add an additional parameter to make sure storage is valid long
enough.
While we are at it, adds some const qualifiers.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes: b64c9256a9b76 ("tproxy: added IPv6 support to the socket match")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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given:
-A INPUT -m recent --update --seconds 30 --hitcount 4
and
iptables-save > foo
then
iptables-restore < foo
will fail with:
kernel: xt_recent: hitcount (4) is larger than packets to be remembered (4) for table DEFAULT
Even when the check is fixed, the restore won't work if the hitcount is
increased to e.g. 6, since by the time checkentry runs it will find the
'old' incarnation of the table.
We can avoid this by increasing the maximum threshold silently; we only
have to rm all the current entries of the table (these entries would
not have enough room to handle the increased hitcount).
This even makes (not-very-useful)
-A INPUT -m recent --update --seconds 30 --hitcount 4
-A INPUT -m recent --update --seconds 30 --hitcount 42
work.
Fixes: abc86d0f99242b7f142b (netfilter: xt_recent: relax ip_pkt_list_tot restrictions)
Tracked-down-by: Chris Vine <chris@cvine.freeserve.co.uk>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Feb 12 18:20:42 nfdev kernel: ------------[ cut here ]------------
Feb 12 18:20:42 nfdev kernel: WARNING: CPU: 4 PID: 4359 at kernel/module.c:963 module_put+0x9b/0xba()
Feb 12 18:20:42 nfdev kernel: CPU: 4 PID: 4359 Comm: ebtables-compat Tainted: G W 3.19.0-rc6+ #43
[...]
Feb 12 18:20:42 nfdev kernel: Call Trace:
Feb 12 18:20:42 nfdev kernel: [<ffffffff815fd911>] dump_stack+0x4c/0x65
Feb 12 18:20:42 nfdev kernel: [<ffffffff8103e6f7>] warn_slowpath_common+0x9c/0xb6
Feb 12 18:20:42 nfdev kernel: [<ffffffff8109919f>] ? module_put+0x9b/0xba
Feb 12 18:20:42 nfdev kernel: [<ffffffff8103e726>] warn_slowpath_null+0x15/0x17
Feb 12 18:20:42 nfdev kernel: [<ffffffff8109919f>] module_put+0x9b/0xba
Feb 12 18:20:42 nfdev kernel: [<ffffffff813ecf7c>] nft_match_destroy+0x45/0x4c
Feb 12 18:20:42 nfdev kernel: [<ffffffff813e683f>] nf_tables_rule_destroy+0x28/0x70
Reported-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Tested-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>
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The current code prevents any operation with a mixed-family dest
unless IP_VS_CONN_F_TUNNEL flag is set. The problem is that it's impossible
for the client to follow this rule, because ip_vs_genl_parse_dest does
not even read the destination conn_flags when cmd = IPVS_CMD_DEL_DEST
(need_full_dest = 0).
Also, not every client can pass this flag when removing a dest. ipvsadm,
for example, does not support the "-i" command line option together with
the "-d" option.
This change disables any checks for mixed-family on IPVS_CMD_DEL_DEST command.
Signed-off-by: Alexey Andriyanov <alan@al-an.info>
Fixes: bc18d37f676f ("ipvs: Allow heterogeneous pools now that we support them")
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
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The cfpkt_iterate() function can return -EPROTO on error, but the
function is a u16 so the negative value gets truncated to a positive
unsigned short. This causes a static checker warning.
The only caller which might care is cffrml_receive(), when it's checking
the frame checksum. I modified cffrml_receive() so that it never says
-EPROTO is a valid checksum.
Also this isn't ever going to be inlined so I removed the "inline".
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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commit aafb3e98b279 (netdev: introduce new NETIF_F_HW_SWITCH_OFFLOAD feature
flag for switch device offloads) add a new feature without adding it to
netdev_features_strings array; this patch fixes this.
Signed-off-by: Rami Rosen <ramirose@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Non NAPI drivers can call skb_tstamp_tx() and then sock_queue_err_skb()
from hard IRQ context.
Therefore, sock_dequeue_err_skb() needs to block hard irq or
corruptions or hangs can happen.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes: 364a9e93243d1 ("sock: deduplicate errqueue dequeue")
Fixes: cb820f8e4b7f7 ("net: Provide a generic socket error queue delivery method for Tx time stamps.")
Signed-off-by: David S. Miller <davem@davemloft.net>
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Open vSwitch allows moving internal vport to different namespace
while still connected to the bridge. But when namespace deleted
OVS does not detach these vports, that results in dangling
pointer to netdevice which causes kernel panic as follows.
This issue is fixed by detaching all ovs ports from the deleted
namespace at net-exit.
BUG: unable to handle kernel NULL pointer dereference at 0000000000000028
IP: [<ffffffffa0aadaa5>] ovs_vport_locate+0x35/0x80 [openvswitch]
Oops: 0000 [#1] SMP
Call Trace:
[<ffffffffa0aa6391>] lookup_vport+0x21/0xd0 [openvswitch]
[<ffffffffa0aa65f9>] ovs_vport_cmd_get+0x59/0xf0 [openvswitch]
[<ffffffff8167e07c>] genl_family_rcv_msg+0x1bc/0x3e0
[<ffffffff8167e319>] genl_rcv_msg+0x79/0xc0
[<ffffffff8167d919>] netlink_rcv_skb+0xb9/0xe0
[<ffffffff8167deac>] genl_rcv+0x2c/0x40
[<ffffffff8167cffd>] netlink_unicast+0x12d/0x1c0
[<ffffffff8167d3da>] netlink_sendmsg+0x34a/0x6b0
[<ffffffff8162e140>] sock_sendmsg+0xa0/0xe0
[<ffffffff8162e5e8>] ___sys_sendmsg+0x408/0x420
[<ffffffff8162f541>] __sys_sendmsg+0x51/0x90
[<ffffffff8162f592>] SyS_sendmsg+0x12/0x20
[<ffffffff81764ee9>] system_call_fastpath+0x12/0x17
Reported-by: Assaf Muller <amuller@redhat.com>
Fixes: 46df7b81454("openvswitch: Add support for network namespaces.")
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Reviewed-by: Thomas Graf <tgraf@noironetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In tcf_em_validate(), after calling request_module() to load the
kind-specific module, set em->ops to NULL before returning -EAGAIN, so
that module_put() is not called again by tcf_em_tree_destroy().
Signed-off-by: Ignacy Gawędzki <ignacy.gawedzki@green-communications.fr>
Acked-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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skb_copy_bits() returns zero on success and negative value on error,
so it is needed to invert the condition in ip_check_defrag().
Fixes: 1bf3751ec90c ("ipv4: ip_check_defrag must not modify skb before unsharing")
Signed-off-by: Alexander Drozdov <al.drozdov@gmail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The gnet_stats_copy_app() function gets called, more often than not, with its
second argument a pointer to an automatic variable in the caller's stack.
Therefore, to avoid copying garbage afterwards when calling
gnet_stats_finish_copy(), this data is better copied to a dynamically allocated
memory that gets freed after use.
[xiyou.wangcong@gmail.com: remove a useless kfree()]
Signed-off-by: Ignacy Gawędzki <ignacy.gawedzki@green-communications.fr>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull more NFS client updates from Trond Myklebust:
"Highlights include:
- Fix a use-after-free in decode_cb_sequence_args()
- Fix a compile error when #undef CONFIG_PROC_FS
- NFSv4.1 backchannel spinlocking issue
- Cleanups in the NFS unstable write code requested by Linus
- NFSv4.1 fix issues when the server denies our backchannel request
- Cleanups in create_session and bind_conn_to_session"
* tag 'nfs-for-3.20-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFSv4.1: Clean up bind_conn_to_session
NFSv4.1: Always set up a forward channel when binding the session
NFSv4.1: Don't set up a backchannel if the server didn't agree to do so
NFSv4.1: Clean up create_session
pnfs: Refactor the *_layout_mark_request_commit to use pnfs_layout_mark_request_commit
NFSv4: Kill unused nfs_inode->delegation_state field
NFS: struct nfs_commit_info.lock must always point to inode->i_lock
nfs: Can call nfs_clear_page_commit() instead
nfs: Provide and use helper functions for marking a page as unstable
SUNRPC: Always manipulate rpc_rqst::rq_bc_pa_list under xprt->bc_pa_lock
SUNRPC: Fix a compile error when #undef CONFIG_PROC_FS
NFSv4.1: Convert open-coded array allocation calls to kmalloc_array()
NFSv4.1: Fix a kfree() of uninitialised pointers in decode_cb_sequence_args
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Merge cleanups requested by Linus.
* cleanups: (3 commits)
pnfs: Refactor the *_layout_mark_request_commit to use pnfs_layout_mark_request_commit
nfs: Can call nfs_clear_page_commit() instead
nfs: Provide and use helper functions for marking a page as unstable
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Other code that accesses rq_bc_pa_list holds xprt->bc_pa_lock.
xprt_complete_bc_request() should do the same.
Fixes: 2ea24497a1b3 ("SUNRPC: RPC callbacks may be split . . .")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Pull Ceph changes from Sage Weil:
"On the RBD side, there is a conversion to blk-mq from Christoph,
several long-standing bug fixes from Ilya, and some cleanup from
Rickard Strandqvist.
On the CephFS side there is a long list of fixes from Zheng, including
improved session handling, a few IO path fixes, some dcache management
correctness fixes, and several blocking while !TASK_RUNNING fixes.
The core code gets a few cleanups and Chaitanya has added support for
TCP_NODELAY (which has been used on the server side for ages but we
somehow missed on the kernel client).
There is also an update to MAINTAINERS to fix up some email addresses
and reflect that Ilya and Zheng are doing most of the maintenance for
RBD and CephFS these days. Do not be surprised to see a pull request
come from one of them in the future if I am unavailable for some
reason"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (27 commits)
MAINTAINERS: update Ceph and RBD maintainers
libceph: kfree() in put_osd() shouldn't depend on authorizer
libceph: fix double __remove_osd() problem
rbd: convert to blk-mq
ceph: return error for traceless reply race
ceph: fix dentry leaks
ceph: re-send requests when MDS enters reconnecting stage
ceph: show nocephx_require_signatures and notcp_nodelay options
libceph: tcp_nodelay support
rbd: do not treat standalone as flatten
ceph: fix atomic_open snapdir
ceph: properly mark empty directory as complete
client: include kernel version in client metadata
ceph: provide seperate {inode,file}_operations for snapdir
ceph: fix request time stamp encoding
ceph: fix reading inline data when i_size > PAGE_SIZE
ceph: avoid block operation when !TASK_RUNNING (ceph_mdsc_close_sessions)
ceph: avoid block operation when !TASK_RUNNING (ceph_get_caps)
ceph: avoid block operation when !TASK_RUNNING (ceph_mdsc_sync)
rbd: fix error paths in rbd_dev_refresh()
...
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a255651d4cad ("ceph: ensure auth ops are defined before use") made
kfree() in put_osd() conditional on the authorizer. A mechanical
mistake most likely - fix it.
Cc: Alex Elder <elder@linaro.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Reviewed-by: Alex Elder <elder@linaro.org>
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It turns out it's possible to get __remove_osd() called twice on the
same OSD. That doesn't sit well with rb_erase() - depending on the
shape of the tree we can get a NULL dereference, a soft lockup or
a random crash at some point in the future as we end up touching freed
memory. One scenario that I was able to reproduce is as follows:
<osd3 is idle, on the osd lru list>
<con reset - osd3>
con_fault_finish()
osd_reset()
<osdmap - osd3 down>
ceph_osdc_handle_map()
<takes map_sem>
kick_requests()
<takes request_mutex>
reset_changed_osds()
__reset_osd()
__remove_osd()
<releases request_mutex>
<releases map_sem>
<takes map_sem>
<takes request_mutex>
__kick_osd_requests()
__reset_osd()
__remove_osd() <-- !!!
A case can be made that osd refcounting is imperfect and reworking it
would be a proper resolution, but for now Sage and I decided to fix
this by adding a safe guard around __remove_osd().
Fixes: http://tracker.ceph.com/issues/8087
Cc: Sage Weil <sage@redhat.com>
Cc: stable@vger.kernel.org # 3.9+: 7c6e6fc53e73: libceph: assert both regular and lingering lists in __remove_osd()
Cc: stable@vger.kernel.org # 3.9+: cc9f1f518cec: libceph: change from BUG to WARN for __remove_osd() asserts
Cc: stable@vger.kernel.org # 3.9+
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Reviewed-by: Alex Elder <elder@linaro.org>
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TCP_NODELAY socket option set on connection sockets,
disables Nagle’s algorithm and improves latency characteristics.
tcp_nodelay(default)/notcp_nodelay option flags provided to
enable/disable setting the socket option.
Signed-off-by: Chaitanya Huilgol <chaitanya.huilgol@sandisk.com>
[idryomov@redhat.com: NO_TCP_NODELAY -> TCP_NODELAY, minor adjustments]
Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
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Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
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On Mon, Dec 22, 2014 at 5:35 PM, Sage Weil <sage@newdream.net> wrote:
> On Mon, 22 Dec 2014, Ilya Dryomov wrote:
>> Actually, pool op stuff has been unused for over two years - looks like
>> it was added for rbd create_snap and that got ripped out in 2012. It's
>> unlikely we'd ever need to manage pools or snaps from the kernel client
>> so I think it makes sense to nuke it. Sage?
>
> Yep!
Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kconfig updates from Michal Marek:
"Yann E Morin was supposed to take over kconfig maintainership, but
this hasn't happened. So I'm sending a few kconfig patches that I
collected:
- Fix for missing va_end in kconfig
- merge_config.sh displays used if given too few arguments
- s/boolean/bool/ in Kconfig files for consistency, with the plan to
only support bool in the future"
* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
kconfig: use va_end to match corresponding va_start
merge_config.sh: Display usage if given too few arguments
kconfig: use bool instead of boolean for type definition attributes
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Support for keyword 'boolean' will be dropped later on.
No functional change.
Reference: http://lkml.kernel.org/r/cover.1418003065.git.cj@linux.com
Signed-off-by: Christoph Jaeger <cj@linux.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
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git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux
Pull virtio updates from Rusty Russell:
"OK, this has the big virtio 1.0 implementation, as specified by OASIS.
On top of tht is the major rework of lguest, to use PCI and virtio
1.0, to double-check the implementation.
Then comes the inevitable fixes and cleanups from that work"
* tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: (80 commits)
virtio: don't set VIRTIO_CONFIG_S_DRIVER_OK twice.
virtio_net: unconditionally define struct virtio_net_hdr_v1.
tools/lguest: don't use legacy definitions for net device in example launcher.
virtio: Don't expose legacy net features when VIRTIO_NET_NO_LEGACY defined.
tools/lguest: use common error macros in the example launcher.
tools/lguest: give virtqueues names for better error messages
tools/lguest: more documentation and checking of virtio 1.0 compliance.
lguest: don't look in console features to find emerg_wr.
tools/lguest: don't start devices until DRIVER_OK status set.
tools/lguest: handle indirect partway through chain.
tools/lguest: insert driver references from the 1.0 spec (4.1 Virtio Over PCI)
tools/lguest: insert device references from the 1.0 spec (4.1 Virtio Over PCI)
tools/lguest: rename virtio_pci_cfg_cap field to match spec.
tools/lguest: fix features_accepted logic in example launcher.
tools/lguest: handle device reset correctly in example launcher.
virtual: Documentation: simplify and generalize paravirt_ops.txt
lguest: remove NOTIFY call and eventfd facility.
lguest: remove NOTIFY facility from demonstration launcher.
lguest: use the PCI console device's emerg_wr for early boot messages.
lguest: always put console in PCI slot #1.
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Some devices might not implement config space access
(e.g. remoteproc used not to - before 3.9).
virtio/9p needs config space access so make it
fail gracefully if not there.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Pull networking updates from David Miller:
1) Missing netlink attribute validation in nft_lookup, from Patrick
McHardy.
2) Restrict ipv6 partial checksum handling to UDP, since that's the
only case it works for. From Vlad Yasevich.
3) Clear out silly device table sentinal macros used by SSB and BCMA
drivers. From Joe Perches.
4) Make sure the remote checksum code never creates a situation where
the remote checksum is applied yet the tunneling metadata describing
the remote checksum transformation is still present. Otherwise an
external entity might see this and apply the checksum again. From
Tom Herbert.
5) Use msecs_to_jiffies() where applicable, from Nicholas Mc Guire.
6) Don't explicitly initialize timer struct fields, use setup_timer()
and mod_timer() instead. From Vaishali Thakkar.
7) Don't invoke tg3_halt() without the tp->lock held, from Jun'ichi
Nomura.
8) Missing __percpu annotation in ipvlan driver, from Eric Dumazet.
9) Don't potentially perform skb_get() on shared skbs, also from Eric
Dumazet.
10) Fix COW'ing of metrics for non-DST_HOST routes in ipv6, from Martin
KaFai Lau.
11) Fix merge resolution error between the iov_iter changes in vhost and
some bug fixes that occurred at the same time. From Jason Wang.
12) If rtnl_configure_link() fails we have to perform a call to
->dellink() before unregistering the device. From WANG Cong.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (39 commits)
net: dsa: Set valid phy interface type
rtnetlink: call ->dellink on failure when ->newlink exists
com20020-pci: add support for eae single card
vhost_net: fix wrong iter offset when setting number of buffers
net: spelling fixes
net/core: Fix warning while make xmldocs caused by dev.c
net: phy: micrel: disable NAND-tree for KSZ8021, KSZ8031, KSZ8051, KSZ8081
ipv6: fix ipv6_cow_metrics for non DST_HOST case
openvswitch: Fix key serialization.
r8152: restore hw settings
hso: fix rx parsing logic when skb allocation fails
tcp: make sure skb is not shared before using skb_get()
bridge: netfilter: Move sysctl-specific error code inside #ifdef
ipv6: fix possible deadlock in ip6_fl_purge / ip6_fl_gc
ipvlan: add a missing __percpu pcpu_stats
tg3: Hold tp->lock before calling tg3_halt() from tg3_init_one()
bgmac: fix device initialization on Northstar SoCs (condition typo)
qlcnic: Delete existing multicast MAC list before adding new
net/mlx5_core: Fix configuration of log_uar_page_sz
sunvnet: don't change gso data on clones
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If the phy interface mode is not found in devicetree, or if devicetree
is not configured, of_get_phy_mode returns -ENODEV. The current code
sets the phy interface mode to the return value from of_get_phy_mode
without checking if it is valid.
This invalid phy interface mode is passed as parameter to of_phy_connect
or to phy_connect_direct. This sets the phy interface mode to the invalid
value, which in turn causes problems for any code using phydev->interface.
Fixes: b31f65fb4383 ("net: dsa: slave: Fix autoneg for phys on switch MDIO bus")
Fixes: 0d8bcdd383b8 ("net: dsa: allow for more complex PHY setups")
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Ignacy reported that when eth0 is down and add a vlan device
on top of it like:
ip link add link eth0 name eth0.1 up type vlan id 1
We will get a refcount leak:
unregister_netdevice: waiting for eth0.1 to become free. Usage count = 2
The problem is when rtnl_configure_link() fails in rtnl_newlink(),
we simply call unregister_device(), but for stacked device like vlan,
we almost do nothing when we unregister the upper device, more work
is done when we unregister the lower device, so call its ->dellink().
Reported-by: Ignacy Gawedzki <ignacy.gawedzki@green-communications.fr>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Spelling errors caught by codespell.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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