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Commit 5339ab8b1dd82 (ipv6: fib: Convert fib6_age() to
dst_neigh_lookup().) seems to have mistakenly inverted the
exception for cached NTF_ROUTER routes.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Denys found out "ip neigh" output was truncated to
about 54 neighbours.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Denys Fedoryshchenko <denys@visp.net.lb>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We must prevent module unloading if some devices are still attached to
l2tp_eth driver.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Denys Fedoryshchenko <denys@visp.net.lb>
Tested-by: Denys Fedoryshchenko <denys@visp.net.lb>
Cc: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
John Linville says:
====================
Amitkumar Karwar gives us a cfg80211 fix that changes some state
tracking in order to avoid a WARNING.
Arik Nemtsov provide a mac80211 fix for an RCU-related race.
Avinash Patil shares a pair of mwifiex fixes, one which invalidates
some stale configuration data before a channel change and another to
restrict hidden SSID support to zero-length SSIDs only.
Chun-Yeow Yeoh brings a mac80211 fix for a mesh problem triggered
when combining multiple mesh networks into one.
Felix Fietkau provides a mac80211 lockdep fix.
Joe Perches fixes a couple of thinkos related to bitwise operations.
Johannes Berg comes through with a flurry of fixes. The iwlwifi ones
address a problem Linus recently reported, and some of the fallout
discovered while fixing it. The mac80211 fix properly cleans-up
remain-on-channel work on an interface that is stopped. The others
are clean-ups for regressions caused by stricter checking of possible
virtual interfaces supported by wireless drivers.
Meenakshi Venkataraman provides a mac80211 fix for an off-by-one error.
Seth Forshee provides a fix to make the wireless adapters used in
some Mac boxes work after being in S3 power saving state.
Stanislaw Gruszka offers a copule of fixes, a fix for a mac80211
scanning regression and an rt2x00 fix to avoid some lockdep spew.
Last but not least, Vinicius Costa Gomes provides a bluetooth fix
for a typo that "was preventing important features of Bluetooth
from working".
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
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git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth
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Most probably a typo, the check should have been for BT_SK_DEFER_SETUP
instead of BT_DEFER_SETUP (which right now only represents a socket
option).
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Acked-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
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If a given interface combination doesn't contain
a required interface type then we missed checking
that and erroneously allowed it even though iface
type wasn't there at all. Add a check that makes
sure that all interface types are accounted for.
Cc: stable@kernel.org
Reported-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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sta_info_cleanup locks the sta_list using rcu_read_lock however
the delete operation isn't rcu safe. A race between sta_info_cleanup
timer being called and a STA being removed can occur which leads
to a panic while traversing sta_list. Fix this by switching to the
RCU-safe versions.
Cc: stable@vger.kernel.org
Reported-by: Eyal Shapira <eyal@wizery.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Using | with a constant is always true.
Likely this should have be &.
cc: Ben Greear <greearb@candelatech.com>
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Fixes a lockdep warning:
===================================================
[ INFO: suspicious rcu_dereference_check() usage. ]
---------------------------------------------------
net/mac80211/agg-rx.c:148 invoked rcu_dereference_check() without protection!
other info that might help us debug this:
rcu_scheduler_active = 1, debug_locks = 1
1 lock held by arecord/11226:
#0: (&tid_agg_rx->session_timer){+.-...}, at: [<ffffffff81066bb0>] call_timer_fn+0x0/0x360
stack backtrace:
Pid: 11226, comm: arecord Not tainted 3.1.0-kml #16
Call Trace:
<IRQ> [<ffffffff81093454>] lockdep_rcu_dereference+0xa4/0xc0
[<ffffffffa02778c9>] sta_rx_agg_session_timer_expired+0xc9/0x110 [mac80211]
[<ffffffffa0277800>] ? ieee80211_process_addba_resp+0x220/0x220 [mac80211]
[<ffffffff81066c3a>] call_timer_fn+0x8a/0x360
[<ffffffff81066bb0>] ? init_timer_deferrable_key+0x30/0x30
[<ffffffff81477bb0>] ? _raw_spin_unlock_irq+0x30/0x70
[<ffffffff81067049>] run_timer_softirq+0x139/0x310
[<ffffffff81091d5e>] ? put_lock_stats.isra.25+0xe/0x40
[<ffffffff810922ac>] ? lock_release_holdtime.part.26+0xdc/0x160
[<ffffffffa0277800>] ? ieee80211_process_addba_resp+0x220/0x220 [mac80211]
[<ffffffff8105cb78>] __do_softirq+0xc8/0x3c0
[<ffffffff8108f088>] ? tick_dev_program_event+0x48/0x110
[<ffffffff8108f16f>] ? tick_program_event+0x1f/0x30
[<ffffffff81153b15>] ? putname+0x35/0x50
[<ffffffff8147a43c>] call_softirq+0x1c/0x30
[<ffffffff81004c55>] do_softirq+0xa5/0xe0
[<ffffffff8105d1ee>] irq_exit+0xae/0xe0
[<ffffffff8147ac6b>] smp_apic_timer_interrupt+0x6b/0x98
[<ffffffff81479ab3>] apic_timer_interrupt+0x73/0x80
<EOI> [<ffffffff8146aac6>] ? free_debug_processing+0x1a1/0x1d5
[<ffffffff81153b15>] ? putname+0x35/0x50
[<ffffffff8146ab2b>] __slab_free+0x31/0x2ca
[<ffffffff81477c3a>] ? _raw_spin_unlock_irqrestore+0x4a/0x90
[<ffffffff81253b8f>] ? __debug_check_no_obj_freed+0x15f/0x210
[<ffffffff81097054>] ? lock_release_nested+0x84/0xc0
[<ffffffff8113ec55>] ? kmem_cache_free+0x105/0x250
[<ffffffff81153b15>] ? putname+0x35/0x50
[<ffffffff81153b15>] ? putname+0x35/0x50
[<ffffffff8113ed8f>] kmem_cache_free+0x23f/0x250
[<ffffffff81153b15>] putname+0x35/0x50
[<ffffffff81146d8d>] do_sys_open+0x16d/0x1d0
[<ffffffff81146e10>] sys_open+0x20/0x30
[<ffffffff81478f42>] system_call_fastpath+0x16/0x1b
Reported-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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When any interface goes down, it could be the one that we
were doing a remain-on-channel with. We therefore need to
cancel the remain-on-channel and flush the related work
structs so they don't run after the interface has been
removed or even destroyed.
It's also possible in this case that an off-channel SKB
was never transmitted, so free it if this is the case.
Note that this can also happen if the driver finishes
the off-channel period without ever starting it.
Cc: stable@kernel.org
Reported-by: Nirav Shah <nirav.j2.shah@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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As part of hardware reconfig mac80211 tries
to restore the station state to its values
before the hardware reconfig, but it only
goes to the last-state - 1. Fix this
off-by-one error.
Cc: stable@kernel.org [3.4]
Signed-off-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Mesh station that joins an MBSS is reachable using mesh portal with 6
address frame by mesh stations from another MBSS if these two different
MBSSes are bridged. However, if the mesh station later moves into the
same MBSS of those mesh stations, it is unreachable by mesh stations
in the MBSS due to the mpp_paths table is not deleted. A quick fix
is to perform mesh_path_lookup, if it is available for the target
destination, mpp_path_lookup is not performed. When the mesh station
moves back to its original MBSS, the mesh_paths will be deleted once
expired. So, it will be reachable using mpp_path_lookup again.
Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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CFG80211_DEV_WARN_ON() at "net/wireless/ibss.c line 63"
is unnecessarily triggered even after successful connection,
when cfg80211_ibss_joined() is called by driver inside
.join_ibss handler.
This patch fixes the problem by changing 'sme_state' in ibss path
and having WARN_ON() check for 'sme_state' similar to infra
association.
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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commit 133d40f9a22bdfd2617a446f1e3209537c5415ec
Author: Stanislaw Gruszka <sgruszka@redhat.com>
Date: Wed Mar 28 16:01:19 2012 +0200
mac80211: do not scan and monitor connection in parallel
add bug, which make possible to start a scan and never finish it, so
make every new scanning request finish with -EBUSY error. This can
happen on code paths where we finish connection monitoring and clear
IEEE80211_STA_*_POLL flags, but do not check if scan was deferred.
This patch fixes those code paths.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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commit 5faa5df1fa2024 (inetpeer: Invalidate the inetpeer tree along with
the routing cache) added a race :
Before freeing an inetpeer, we must respect a RCU grace period, and make
sure no user will attempt to increase refcnt.
inetpeer_invalidate_tree() waits for a RCU grace period before inserting
inetpeer tree into gc_list and waking the worker. At that time, no
concurrent lookup can find a inetpeer in this tree.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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drop_monitor calls several sleeping functions while in atomic context.
BUG: sleeping function called from invalid context at mm/slub.c:943
in_atomic(): 1, irqs_disabled(): 0, pid: 2103, name: kworker/0:2
Pid: 2103, comm: kworker/0:2 Not tainted 3.5.0-rc1+ #55
Call Trace:
[<ffffffff810697ca>] __might_sleep+0xca/0xf0
[<ffffffff811345a3>] kmem_cache_alloc_node+0x1b3/0x1c0
[<ffffffff8105578c>] ? queue_delayed_work_on+0x11c/0x130
[<ffffffff815343fb>] __alloc_skb+0x4b/0x230
[<ffffffffa00b0360>] ? reset_per_cpu_data+0x160/0x160 [drop_monitor]
[<ffffffffa00b022f>] reset_per_cpu_data+0x2f/0x160 [drop_monitor]
[<ffffffffa00b03ab>] send_dm_alert+0x4b/0xb0 [drop_monitor]
[<ffffffff810568e0>] process_one_work+0x130/0x4c0
[<ffffffff81058249>] worker_thread+0x159/0x360
[<ffffffff810580f0>] ? manage_workers.isra.27+0x240/0x240
[<ffffffff8105d403>] kthread+0x93/0xa0
[<ffffffff816be6d4>] kernel_thread_helper+0x4/0x10
[<ffffffff8105d370>] ? kthread_freezable_should_stop+0x80/0x80
[<ffffffff816be6d0>] ? gs_change+0xb/0xb
Rework the logic to call the sleeping functions in right context.
Use standard timer/workqueue api to let system chose any cpu to perform
the allocation and netlink send.
Also avoid a loop if reset_per_cpu_data() cannot allocate memory :
use mod_timer() to wait 1/10 second before next try.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Reviewed-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull networking updates from David Miller:
1) Make syn floods consume significantly less resources by
a) Not pre-COW'ing routing metrics for SYN/ACKs
b) Mirroring the device queue mapping of the SYN for the SYN/ACK
reply.
Both from Eric Dumazet.
2) Fix calculation errors in Byte Queue Limiting, from Hiroaki SHIMODA.
3) Validate the length requested when building a paged SKB for a
socket, so we don't overrun the page vector accidently. From Jason
Wang.
4) When netlabel is disabled, we abort all IP option processing when we
see a CIPSO option. This isn't the right thing to do, we should
simply skip over it and continue processing the remaining options
(if any). Fix from Paul Moore.
5) SRIOV fixes for the mellanox driver from Jack orgenstein and Marcel
Apfelbaum.
6) 8139cp enables the receiver before the ring address is properly
programmed, which potentially lets the device crap over random
memory. Fix from Jason Wang.
7) e1000/e1000e fixes for i217 RST handling, and an improper buffer
address reference in jumbo RX frame processing from Bruce Allan and
Sebastian Andrzej Siewior, respectively.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
fec_mpc52xx: fix timestamp filtering
mcs7830: Implement link state detection
e1000e: fix Rapid Start Technology support for i217
e1000: look into the page instead of skb->data for e1000_tbi_adjust_stats()
r8169: call netif_napi_del at errpaths and at driver unload
tcp: reflect SYN queue_mapping into SYNACK packets
tcp: do not create inetpeer on SYNACK message
8139cp/8139too: terminate the eeprom access with the right opmode
8139cp: set ring address before enabling receiver
cipso: handle CIPSO options correctly when NetLabel is disabled
net: sock: validate data_len before allocating skb in sock_alloc_send_pskb()
bql: Avoid possible inconsistent calculation.
bql: Avoid unneeded limit decrement.
bql: Fix POSDIFF() to integer overflow aware.
net/mlx4_core: Fix obscure mlx4_cmd_box parameter in QUERY_DEV_CAP
net/mlx4_core: Check port out-of-range before using in mlx4_slave_cap
net/mlx4_core: Fixes for VF / Guest startup flow
net/mlx4_en: Fix improper use of "port" parameter in mlx4_en_event
net/mlx4_core: Fix number of EQs used in ICM initialisation
net/mlx4_core: Fix the slave_id out-of-range test in mlx4_eq_int
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While testing how linux behaves on SYNFLOOD attack on multiqueue device
(ixgbe), I found that SYNACK messages were dropped at Qdisc level
because we send them all on a single queue.
Obvious choice is to reflect incoming SYN packet @queue_mapping to
SYNACK packet.
Under stress, my machine could only send 25.000 SYNACK per second (for
200.000 incoming SYN per second). NIC : ixgbe with 16 rx/tx queues.
After patch, not a single SYNACK is dropped.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Hans Schillstrom <hans.schillstrom@ericsson.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Another problem on SYNFLOOD/DDOS attack is the inetpeer cache getting
larger and larger, using lots of memory and cpu time.
tcp_v4_send_synack()
->inet_csk_route_req()
->ip_route_output_flow()
->rt_set_nexthop()
->rt_init_metrics()
->inet_getpeer( create = true)
This is a side effect of commit a4daad6b09230 (net: Pre-COW metrics for
TCP) added in 2.6.39
Possible solution :
Instruct inet_csk_route_req() to remove FLOWI_FLAG_PRECOW_METRICS
Before patch :
# grep peer /proc/slabinfo
inet_peer_cache 4175430 4175430 192 42 2 : tunables 0 0 0 : slabdata 99415 99415 0
Samples: 41K of event 'cycles', Event count (approx.): 30716565122
+ 20,24% ksoftirqd/0 [kernel.kallsyms] [k] inet_getpeer
+ 8,19% ksoftirqd/0 [kernel.kallsyms] [k] peer_avl_rebalance.isra.1
+ 4,81% ksoftirqd/0 [kernel.kallsyms] [k] sha_transform
+ 3,64% ksoftirqd/0 [kernel.kallsyms] [k] fib_table_lookup
+ 2,36% ksoftirqd/0 [ixgbe] [k] ixgbe_poll
+ 2,16% ksoftirqd/0 [kernel.kallsyms] [k] __ip_route_output_key
+ 2,11% ksoftirqd/0 [kernel.kallsyms] [k] kernel_map_pages
+ 2,11% ksoftirqd/0 [kernel.kallsyms] [k] ip_route_input_common
+ 2,01% ksoftirqd/0 [kernel.kallsyms] [k] __inet_lookup_established
+ 1,83% ksoftirqd/0 [kernel.kallsyms] [k] md5_transform
+ 1,75% ksoftirqd/0 [kernel.kallsyms] [k] check_leaf.isra.9
+ 1,49% ksoftirqd/0 [kernel.kallsyms] [k] ipt_do_table
+ 1,46% ksoftirqd/0 [kernel.kallsyms] [k] hrtimer_interrupt
+ 1,45% ksoftirqd/0 [kernel.kallsyms] [k] kmem_cache_alloc
+ 1,29% ksoftirqd/0 [kernel.kallsyms] [k] inet_csk_search_req
+ 1,29% ksoftirqd/0 [kernel.kallsyms] [k] __netif_receive_skb
+ 1,16% ksoftirqd/0 [kernel.kallsyms] [k] copy_user_generic_string
+ 1,15% ksoftirqd/0 [kernel.kallsyms] [k] kmem_cache_free
+ 1,02% ksoftirqd/0 [kernel.kallsyms] [k] tcp_make_synack
+ 0,93% ksoftirqd/0 [kernel.kallsyms] [k] _raw_spin_lock_bh
+ 0,87% ksoftirqd/0 [kernel.kallsyms] [k] __call_rcu
+ 0,84% ksoftirqd/0 [kernel.kallsyms] [k] rt_garbage_collect
+ 0,84% ksoftirqd/0 [kernel.kallsyms] [k] fib_rules_lookup
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Hans Schillstrom <hans.schillstrom@ericsson.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We need to validate the number of pages consumed by data_len, otherwise frags
array could be overflowed by userspace. So this patch validate data_len and
return -EMSGSIZE when data_len may occupies more frags than MAX_SKB_FRAGS.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This reverts the tty layer change to use per-tty locking, because it's
not correct yet, and fixing it will require some more deep surgery.
The main revert is d29f3ef39be4 ("tty_lock: Localise the lock"), but
there are several smaller commits that built upon it, they also get
reverted here. The list of reverted commits is:
fde86d310886 - tty: add lockdep annotations
8f6576ad476b - tty: fix ldisc lock inversion trace
d3ca8b64b97e - pty: Fix lock inversion
b1d679afd766 - tty: drop the pty lock during hangup
abcefe5fc357 - tty/amiserial: Add missing argument for tty_unlock()
fd11b42e3598 - cris: fix missing tty arg in wait_event_interruptible_tty call
d29f3ef39be4 - tty_lock: Localise the lock
The revert had a trivial conflict in the 68360serial.c staging driver
that got removed in the meantime.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs changes from Al Viro.
"A lot of misc stuff. The obvious groups:
* Miklos' atomic_open series; kills the damn abuse of
->d_revalidate() by NFS, which was the major stumbling block for
all work in that area.
* ripping security_file_mmap() and dealing with deadlocks in the
area; sanitizing the neighborhood of vm_mmap()/vm_munmap() in
general.
* ->encode_fh() switched to saner API; insane fake dentry in
mm/cleancache.c gone.
* assorted annotations in fs (endianness, __user)
* parts of Artem's ->s_dirty work (jff2 and reiserfs parts)
* ->update_time() work from Josef.
* other bits and pieces all over the place.
Normally it would've been in two or three pull requests, but
signal.git stuff had eaten a lot of time during this cycle ;-/"
Fix up trivial conflicts in Documentation/filesystems/vfs.txt (the
'truncate_range' inode method was removed by the VM changes, the VFS
update adds an 'update_time()' method), and in fs/btrfs/ulist.[ch] (due
to sparse fix added twice, with other changes nearby).
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (95 commits)
nfs: don't open in ->d_revalidate
vfs: retry last component if opening stale dentry
vfs: nameidata_to_filp(): don't throw away file on error
vfs: nameidata_to_filp(): inline __dentry_open()
vfs: do_dentry_open(): don't put filp
vfs: split __dentry_open()
vfs: do_last() common post lookup
vfs: do_last(): add audit_inode before open
vfs: do_last(): only return EISDIR for O_CREAT
vfs: do_last(): check LOOKUP_DIRECTORY
vfs: do_last(): make ENOENT exit RCU safe
vfs: make follow_link check RCU safe
vfs: do_last(): use inode variable
vfs: do_last(): inline walk_component()
vfs: do_last(): make exit RCU safe
vfs: split do_lookup()
Btrfs: move over to use ->update_time
fs: introduce inode operation ->update_time
reiserfs: get rid of resierfs_sync_super
reiserfs: mark the superblock as dirty a bit later
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sockfd_lookup() is declared in linux/net.h, which is pulled by
linux/skbuff.h (and needed for a lot of other stuff in sch_atm.c
anyway).
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Pull the rest of the nfsd commits from Bruce Fields:
"... and then I cherry-picked the remainder of the patches from the
head of my previous branch"
This is the rest of the original nfsd branch, rebased without the
delegation stuff that I thought really needed to be redone.
I don't like rebasing things like this in general, but in this situation
this was the lesser of two evils.
* 'for-3.5' of git://linux-nfs.org/~bfields/linux: (50 commits)
nfsd4: fix, consolidate client_has_state
nfsd4: don't remove rebooted client record until confirmation
nfsd4: remove some dprintk's and a comment
nfsd4: return "real" sequence id in confirmed case
nfsd4: fix exchange_id to return confirm flag
nfsd4: clarify that renewing expired client is a bug
nfsd4: simpler ordering of setclientid_confirm checks
nfsd4: setclientid: remove pointless assignment
nfsd4: fix error return in non-matching-creds case
nfsd4: fix setclientid_confirm same_cred check
nfsd4: merge 3 setclientid cases to 2
nfsd4: pull out common code from setclientid cases
nfsd4: merge last two setclientid cases
nfsd4: setclientid/confirm comment cleanup
nfsd4: setclientid remove unnecessary terms from a logical expression
nfsd4: move rq_flavor into svc_cred
nfsd4: stricter cred comparison for setclientid/exchange_id
nfsd4: move principal name into svc_cred
nfsd4: allow removing clients not holding state
nfsd4: rearrange exchange_id logic to simplify
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Move the rq_flavor into struct svc_cred, and use it in setclientid and
exchange_id comparisons as well.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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Instead of keeping the principal name associated with a request in a
structure that's private to auth_gss and using an accessor function,
move it to svc_cred.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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There's little point in waiting until after we allocate all of the pages
to see if we're going to overrun the array. In the event that this
calculation is really off we could end up scribbling over a bunch of
memory and make it tougher to debug.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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The idea is to separate service destruction and per-net operations,
because these are two different things and the mix looks ugly.
Notes:
1) For NFS server this patch looks ugly (sorry for that). But these
place will be rewritten soon during NFSd containerization.
2) LockD per-net counter increase int lockd_up() was moved prior to
make_socks() to make lockd_down_net() call safe in case of error.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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This new routine is responsible for service registration in a specified
network context.
The idea is to separate service creation from per-net operations.
Note also: since registering service with svc_bind() can fail, the
service will be destroyed and during destruction it will try to
unregister itself from rpcbind. In this case unregistration has to be
skipped.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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The data in Kerberos gss tokens can be rotated. But we were lazy and
rejected any nonzero rotation value. It wasn't necessary for the
implementations we were testing against at the time.
But it appears that Windows does use a nonzero value here.
So, implement rotation to bring ourselves into compliance with the spec
and to interoperate with Windows.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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Pull nfsd update from Bruce Fields.
* 'for-3.5-take-2' of git://linux-nfs.org/~bfields/linux: (23 commits)
nfsd: trivial: use SEEK_SET instead of 0 in vfs_llseek
SUNRPC: split upcall function to extract reusable parts
nfsd: allocate id-to-name and name-to-id caches in per-net operations.
nfsd: make name-to-id cache allocated per network namespace context
nfsd: make id-to-name cache allocated per network namespace context
nfsd: pass network context to idmap init/exit functions
nfsd: allocate export and expkey caches in per-net operations.
nfsd: make expkey cache allocated per network namespace context
nfsd: make export cache allocated per network namespace context
nfsd: pass pointer to export cache down to stack wherever possible.
nfsd: pass network context to export caches init/shutdown routines
Lockd: pass network namespace to creation and destruction routines
NFSd: remove hard-coded dereferences to name-to-id and id-to-name caches
nfsd: pass pointer to expkey cache down to stack wherever possible.
nfsd: use hash table from cache detail in nfsd export seq ops
nfsd: pass svc_export_cache pointer as private data to "exports" seq file ops
nfsd: use exp_put() for svc_export_cache put
nfsd: use cache detail pointer from svc_export structure on cache put
nfsd: add link to owner cache detail to svc_export structure
nfsd: use passed cache_detail pointer expkey_parse()
...
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This is needed to share code between the current server upcall mechanism
and the new gssproxy upcall mechanism introduced in a following patch.
Signed-off-by: Simo Sorce <simo@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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This patch also changes svcauth_unix_purge() function: added network namespace
as a parameter and thus loop over all networks was replaced by only one call
for ip map cache purge.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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Pull networking changes from David S. Miller:
1) Fix IPSEC header length calculation for transport mode in ESP. The
issue is whether to do the calculation before or after alignment.
Fix from Benjamin Poirier.
2) Fix regression in IPV6 IPSEC fragment length calculations, from Gao
Feng. This is another transport vs tunnel mode issue.
3) Handle AF_UNSPEC connect()s properly in L2TP to avoid OOPSes. Fix
from James Chapman.
4) Fix USB ASIX driver's reception of full sized VLAN packets, from
Eric Dumazet.
5) Allow drop monitor (and, more generically, all generic netlink
protocols) to be automatically loaded as a module. From Neil
Horman.
Fix up trivial conflict in Documentation/feature-removal-schedule.txt
due to new entries added next to each other at the end. As usual.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (38 commits)
net/smsc911x: Repair broken failure paths
virtio-net: remove useless disable on freeze
netdevice: Update netif_dbg for CONFIG_DYNAMIC_DEBUG
drop_monitor: Add module alias to enable automatic module loading
genetlink: Build a generic netlink family module alias
net: add MODULE_ALIAS_NET_PF_PROTO_NAME
r6040: Do a Proper deinit at errorpath and also when driver unloads (calling r6040_remove_one)
r6040: disable pci device if the subsequent calls (after pci_enable_device) fails
skb: avoid unnecessary reallocations in __skb_cow
net: sh_eth: fix the rxdesc pointer when rx descriptor empty happens
asix: allow full size 8021Q frames to be received
rds_rdma: don't assume infiniband device is PCI
l2tp: fix oops in L2TP IP sockets for connect() AF_UNSPEC case
mac80211: fix ADDBA declined after suspend with wowlan
wlcore: fix undefined symbols when CONFIG_PM is not defined
mac80211: fix flag check for QoS NOACK frames
ath9k_hw: apply internal regulator settings on AR933x
ath9k_hw: update AR933x initvals to fix issues with high power devices
ath9k: fix a use-after-free-bug when ath_tx_setup_buffer() fails
ath9k: stop rx dma before stopping tx
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
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WLAN_STA_BLOCK_BA is set while suspending but doesn't get cleared
when resuming in case of wowlan. This causes further ADDBA requests
received to be rejected. Fix it by clearing it in the wowlan path
as well.
Signed-off-by: Eyal Shapira <eyal@wizery.com>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Cc: stable@vger.kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Signed-off-by: Claudio Pisa <claudio.pisa@uniroma2.it>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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mac80211 tries to verify the existence of the current AP by
probing or sending a NULL frame in function
ieee80211_mgd_probe_ap_send. It 1st sends a null frame to the AP,
increments probe_send_count and waits for the ACK to the NULL
frame for a finite duration of time. At times, it happens that by
the time mac80211 gets to increment probe_send_count, the ACK for
the NULL frame transmitted has already been processed. This leads
to a race condition where mac80211 times out waiting for the ACK
for the NULL frame causing unnecessary disconnection with the AP.
Signed-off-by: Soumik Das <soumik.das@stericsson.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Now that we have module alias macros for generic netlink families, lets use
those to mark modules with the appropriate family names for loading
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Generic netlink searches for -type- formatted aliases when requesting a module to
fulfill a protocol request (i.e. net-pf-16-proto-16-type-<x>, where x is a type
value). However generic netlink protocols have no well defined type numbers,
they have string names. Modify genl_ctrl_getfamily to request an alias in the
format net-pf-16-proto-16-family-<x> instead, where x is a generic string, and
add a macro that builds on the previously added MODULE_ALIAS_NET_PF_PROTO_NAME
macro to allow modules to specifify those generic strings.
Note, l2tp previously hacked together an net-pf-16-proto-16-type-l2tp alias
using the MODULE_ALIAS macro, with these updates we can convert that to use the
PROTO_NAME macro.
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: James Chapman <jchapman@katalix.com>
CC: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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RDS code assumes that the struct ib_device dma_device member, which is a
pointer, points to a struct device embedded in a struct pci_dev.
This is not the case for ehca, for example, which is a OF driver, and
makes dma_device point to a struct device embedded in a struct
platform_device.
This will make the system crash when rds_rdma is loaded in a system
with ehca, since it will try to access the bus member of a non-existent
struct pci_dev.
The only reason rds_rdma uses the struct pci_dev is to get the NUMA node
the device is attached to. Using dev_to_node for that is much better,
since it won't assume which bus the infiniband is attached to.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
Cc: dledford@redhat.com
Cc: Jes.Sorensen@redhat.com
Cc: Venkat Venkatsubra <venkat.x.venkatsubra@oracle.com>
Acked-by: Venkat Venkatsubra <venkat.x.venkatsubra@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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An application may call connect() to disconnect a socket using an
address with family AF_UNSPEC. The L2TP IP sockets were not handling
this case when the socket is not bound and an attempt to connect()
using AF_UNSPEC in such cases would result in an oops. This patch
addresses the problem by protecting the sk_prot->disconnect() call
against trying to unhash the socket before it is bound.
The L2TP IPv4 and IPv6 sockets have the same problem. Both are fixed
by this patch.
The patch also adds more checks that the sockaddr supplied to bind()
and connect() calls is valid.
RIP: 0010:[<ffffffff82e133b0>] [<ffffffff82e133b0>] inet_unhash+0x50/0xd0
RSP: 0018:ffff88001989be28 EFLAGS: 00010293
Stack:
ffff8800407a8000 0000000000000000 ffff88001989be78 ffffffff82e3a249
ffffffff82e3a050 ffff88001989bec8 ffff88001989be88 ffff8800407a8000
0000000000000010 ffff88001989bec8 ffff88001989bea8 ffffffff82e42639
Call Trace:
[<ffffffff82e3a249>] udp_disconnect+0x1f9/0x290
[<ffffffff82e42639>] inet_dgram_connect+0x29/0x80
[<ffffffff82d012fc>] sys_connect+0x9c/0x100
Reported-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since commit ad0081e43a
"ipv6: Fragment locally generated tunnel-mode IPSec6 packets as needed"
the fragment of packets is incorrect.
because tunnel mode needs IPsec headers and trailer for all fragments,
while on transport mode it is sufficient to add the headers to the
first fragment and the trailer to the last.
so modify mtu and maxfraglen base on ipsec mode and if fragment is first
or last.
with my test,it work well(every fragment's size is the mtu)
and does not trigger slow fragment path.
Changes from v1:
though optimization, mtu_prev and maxfraglen_prev can be delete.
replace xfrm mode codes with dst_entry's new frag DST_XFRM_TUNNEL.
add fuction ip6_append_data_mtu to make codes clearer.
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Corrects the function that determines the esp payload size. The calculations
done in esp{4,6}_get_mtu() lead to overlength frames in transport mode for
certain mtu values and suboptimal frames for others.
According to what is done, mainly in esp{,6}_output() and tcp_mtu_to_mss(),
net_header_len must be taken into account before doing the alignment
calculation.
Signed-off-by: Benjamin Poirier <bpoirier@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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No one uses this on current kernels anymore.
Let it be known it's going to be removed eventually.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull ceph updates from Sage Weil:
"There are some updates and cleanups to the CRUSH placement code, a bug
fix with incremental maps, several cleanups and fixes from Josh Durgin
in the RBD block device code, a series of cleanups and bug fixes from
Alex Elder in the messenger code, and some miscellaneous bounds
checking and gfp cleanups/fixes."
Fix up trivial conflicts in net/ceph/{messenger.c,osdmap.c} due to the
networking people preferring "unsigned int" over just "unsigned".
* git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (45 commits)
libceph: fix pg_temp updates
libceph: avoid unregistering osd request when not registered
ceph: add auth buf in prepare_write_connect()
ceph: rename prepare_connect_authorizer()
ceph: return pointer from prepare_connect_authorizer()
ceph: use info returned by get_authorizer
ceph: have get_authorizer methods return pointers
ceph: ensure auth ops are defined before use
ceph: messenger: reduce args to create_authorizer
ceph: define ceph_auth_handshake type
ceph: messenger: check return from get_authorizer
ceph: messenger: rework prepare_connect_authorizer()
ceph: messenger: check prepare_write_connect() result
ceph: don't set WRITE_PENDING too early
ceph: drop msgr argument from prepare_write_connect()
ceph: messenger: send banner in process_connect()
ceph: messenger: reset connection kvec caller
libceph: don't reset kvec in prepare_write_banner()
ceph: ignore preferred_osd field
ceph: fully initialize new layout
...
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Usually, we are adding pg_temp entries or removing them. Occasionally they
update. In that case, osdmap_apply_incremental() was failing because the
rbtree entry already exists.
Fix by removing the existing entry before inserting a new one.
Fixes http://tracker.newdream.net/issues/2446
Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
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