Reported-by: Vagrant Cascadian <vagrant@debian.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Sat, 8 Mar 2014 16:01:19 +0000 (08:01 -0800)]
pkt_sched: move the sanity test in qdisc_list_add()
The WARN_ON(root == &noop_qdisc)) added in qdisc_list_add()
can trigger in normal conditions when devices are not up.
It should be done only right before the list_add_tail() call.
Fixes: e57a784d8cae4 ("pkt_sched: set root qdisc before change() in attach_default_qdiscs()") Reported-by: Valdis Kletnieks <Valdis.Kletnieks@vt.edu> Tested-by: Mirco Tischler <mt-ml@gmx.de> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 10 Mar 2014 18:10:13 +0000 (14:10 -0400)]
Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
John W. Linville says:
====================
Please pull this batch of fixes intende for the 3.14 stream...
For the mac80211 bits, Johannes says:
"Here I have a fix from Eliad for the minimal channel width calculation
in the mac80211 code which lead to monitor mode not working at all for
drivers using that. One of my fixes is for an issue noticed by Michal,
we clear an already cleared value but do it without locking, so just
remove that. The other is for a data leak - we leak two bytes of kernel
memory out over the air in QoS NULL frames because those don't get a
sequence number assigned in the TX path."
For the iwlwifi bits, Emmanuel says:
"One more fix and an update for device IDs.
There is a bugzilla reported for the fix which is mentioned in the commit message."
Along with those...
Amitkumar Karwar provides two mwifiex fixes, both correcting some
data transcription problems.
Ivaylo Dimitrov uses skb_trim in the wl1251 driver to avoid
HAVE_EFFICIENT_UNALIGNED_ACCESS problems.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
created a shutdown down sequence without chip reset if the device was
never brought up. This can cause the firmware to shutdown the PHY
prematurely and cause MMIO read cycles to be unresponsive. On some
systems, it may generate NMI in the bnx2's pci shutdown handler.
The fix is to tell the firmware not to shutdown the PHY if there was
no prior chip reset.
Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Thu, 6 Mar 2014 16:51:57 +0000 (17:51 +0100)]
ipv6: don't set DST_NOCOUNT for remotely added routes
DST_NOCOUNT should only be used if an authorized user adds routes
locally. In case of routes which are added on behalf of router
advertisments this flag must not get used as it allows an unlimited
number of routes getting added remotely.
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Amir Vadai [Thu, 6 Mar 2014 16:28:17 +0000 (18:28 +0200)]
net/mlx4_core: mlx4_init_slave() shouldn't access comm channel before PF is ready
Currently, the PF call to pci_enable_sriov from the PF probe function
stalls for 10 seconds times the number of VFs probed on the host. This
happens because the way for such VFs to determine of the PF
initialization finished, is by attempting to issue reset on the
comm-channel and get timeout (after 10s).
The PF probe function is called from a kenernel workqueue, and therefore
during that time, rcu lock is being held and kernel's workqueue is
stalled. This blocks other processes that try to use the workqueue
or rcu lock. For example, interface renaming which is calling
rcu_synchronize is blocked, and timedout by systemd.
Changed mlx4_init_slave() to allow VF probed on the host to immediatly
detect that the PF is not ready, and return EPROBE_DEFER instantly.
Only when the PF finishes the initialization, allow such VFs to
access the comm channel.
This issue and fix are relevant only for probed VFs on the hypervisor,
there is no way to pass this information to a VM until comm channel is
ready, so in a VM, if PF is not ready, the first command will be timedout
after 10 seconds and return EPROBE_DEFER.
Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Amir Vadai [Thu, 6 Mar 2014 16:28:16 +0000 (18:28 +0200)]
net/mlx4_core: Fix memory access error in mlx4_QUERY_DEV_CAP_wrapper()
Fix a regression introduced by [1]. outbox was accessed instead of
outbox->buf. Typo was copy-pasted to [2] and [3].
[1] - cc1ade9 mlx4_core: Disable memory windows for virtual functions
[2] - 4de6580 mlx4_core: Add support for steerable IB UD QPs
[3] - 7ffdf72 net/mlx4_core: Add basic support for TCP/IP offloads under
tunneling
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Introduced by commit 4325b374f84 ("bonding: convert lp_interval to use
the new option API").
Acked-by: Nikolay Aleksandrov <nikolay@redhat.com> Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Anton Nayshtut [Wed, 5 Mar 2014 06:30:08 +0000 (08:30 +0200)]
ipv6: Fix exthdrs offload registration.
Without this fix, ipv6_exthdrs_offload_init doesn't register IPPROTO_DSTOPTS
offload, but returns 0 (as the IPPROTO_ROUTING registration actually succeeds).
This then causes the ipv6_gso_segment to drop IPv6 packets with IPPROTO_DSTOPTS
header.
The issue detected and the fix verified by running MS HCK Offload LSO test on
top of QEMU Windows guests, as this test sends IPv6 packets with
IPPROTO_DSTOPTS.
Signed-off-by: Anton Nayshtut <anton@swortex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Anton Blanchard [Wed, 5 Mar 2014 03:51:37 +0000 (14:51 +1100)]
ibmveth: Fix endian issues with MAC addresses
The code to load a MAC address into a u64 for passing to the
hypervisor via a register is broken on little endian.
Create a helper function called ibmveth_encode_mac_addr
which does the right thing in both big and little endian.
We were storing the MAC address in a long in struct ibmveth_adapter.
It's never used so remove it - we don't need another place in the
driver where we create endian issues with MAC addresses.
Signed-off-by: Anton Blanchard <anton@samba.org> Cc: stable@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
net: Improve SO_TIMESTAMPING documentation and fix a minor code bug
The original documentation was very unclear.
The code fix is presumably related to the formerly unclear
documentation: SOCK_TIMESTAMPING_RX_SOFTWARE has no effect on
__sock_recv_timestamp's behavior, so calling __sock_recv_ts_and_drops
from sock_recv_ts_and_drops if only SOCK_TIMESTAMPING_RX_SOFTWARE is
set is pointless. This should have no user-observable effect.
Signed-off-by: Andy Lutomirski <luto@amacapital.net> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Bjorn Helgaas [Wed, 5 Mar 2014 00:35:44 +0000 (17:35 -0700)]
phy: fix compiler array bounds warning on settings[]
With -Werror=array-bounds, gcc v4.7.x warns that in phy_find_valid(), the
settings[] "array subscript is above array bounds", I think because idx is
a signed integer and if the caller supplied idx < 0, we pass the guard but
still reference out of bounds.
Fix this by making idx unsigned here and elsewhere.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Problem is that incomplete frags are still around after unload; when
their frag expire timer fires, we get crash.
When a netns is removed (also done when unloading module), inet_frag
calls the evictor with 'force' argument to purge remaining frags.
The evictor loop terminates when accounted memory ('work') drops to 0
or the lru-list becomes empty. However, the mem accounting is done
via percpu counters and may not be accurate, i.e. loop may terminate
prematurely.
Alter evictor to only stop once the lru list is empty when force is
requested.
Reported-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Reported-by: Alexander Aring <alex.aring@gmail.com> Tested-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 6 Mar 2014 19:46:38 +0000 (14:46 -0500)]
Merge branch 'tipc'
Eric Hugne says:
====================
tipc: refcount and memory leak fixes
v3: Remove error logging from data path completely. Rebased on top of
latest net merge.
v2: Drop specific -ENOMEM logging in patch #1 (tipc: allow connection
shutdown callback to be invoked in advance) And add a general error
message if an internal server tries to send a message on a
closed/nonexisting connection.
In addition to the fix for refcount leak and memory leak during
module removal, we also fix a problem where the topology server
listening socket where unexpectedly closed. We also eliminate an
unnecessary context switch during accept()/recvmsg() for nonblocking
sockets.
It might be good to include this patchset in stable aswell. After the
v3 rebase on latest merge from net all patches apply cleanly on that
tree.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Erik Hugne [Thu, 6 Mar 2014 13:40:21 +0000 (14:40 +0100)]
tipc: don't log disabled tasklet handler errors
Failure to schedule a TIPC tasklet with tipc_k_signal because the
tasklet handler is disabled is not an error. It means TIPC is
currently in the process of shutting down. We remove the error
logging in this case.
Signed-off-by: Erik Hugne <erik.hugne@ericsson.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Erik Hugne [Thu, 6 Mar 2014 13:40:20 +0000 (14:40 +0100)]
tipc: fix memory leak during module removal
When the TIPC module is removed, the tasklet handler is disabled
before all other subsystems. This will cause lingering publications
in the name table because the node_down tasklets responsible to
clean up publications from an unreachable node will never run.
When the name table is shut down, these publications are detected
and an error message is logged:
tipc: nametbl_stop(): orphaned hash chain detected
This is actually a memory leak, introduced with commit 993b858e37b3120ee76d9957a901cca22312ffaa ("tipc: correct the order
of stopping services at rmmod")
Instead of just logging an error and leaking memory, we free
the orphaned entries during nametable shutdown.
Signed-off-by: Erik Hugne <erik.hugne@ericsson.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Erik Hugne [Thu, 6 Mar 2014 13:40:19 +0000 (14:40 +0100)]
tipc: drop subscriber connection id invalidation
When a topology server subscriber is disconnected, the associated
connection id is set to zero. A check vs zero is then done in the
subscription timeout function to see if the subscriber have been
shut down. This is unnecessary, because all subscription timers
will be cancelled when a subscriber terminates. Setting the
connection id to zero is actually harmful because id zero is the
identity of the topology server listening socket, and can cause a
race that leads to this socket being closed instead.
Signed-off-by: Erik Hugne <erik.hugne@ericsson.com> Acked-by: Ying Xue <ying.xue@windriver.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ying Xue [Thu, 6 Mar 2014 13:40:18 +0000 (14:40 +0100)]
tipc: avoid to unnecessary process switch under non-block mode
When messages are received via tipc socket under non-block mode,
schedule_timeout() is called in tipc_wait_for_rcvmsg(), that is,
the process of receiving messages will be scheduled once although
timeout value passed to schedule_timeout() is 0. The same issue
exists in accept()/wait_for_accept(). To avoid this unnecessary
process switch, we only call schedule_timeout() if the timeout
value is non-zero.
Signed-off-by: Ying Xue <ying.xue@windriver.com> Reviewed-by: Erik Hugne <erik.hugne@ericsson.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ying Xue [Thu, 6 Mar 2014 13:40:17 +0000 (14:40 +0100)]
tipc: fix connection refcount leak
When tipc_conn_sendmsg() calls tipc_conn_lookup() to query a
connection instance, its reference count value is increased if
it's found. But subsequently if it's found that the connection is
closed, the work of sending message is not queued into its server
send workqueue, and the connection reference count is not decreased.
This will cause a reference count leak. To reproduce this problem,
an application would need to open and closes topology server
connections with high intensity.
We fix this by immediately decrementing the connection reference
count if a send fails due to the connection being closed.
Signed-off-by: Ying Xue <ying.xue@windriver.com> Acked-by: Erik Hugne <erik.hugne@ericsson.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ying Xue [Thu, 6 Mar 2014 13:40:16 +0000 (14:40 +0100)]
tipc: allow connection shutdown callback to be invoked in advance
Currently connection shutdown callback function is called when
connection instance is released in tipc_conn_kref_release(), and
receiving packets and sending packets are running in different
threads. Even if connection is closed by the thread of receiving
packets, its shutdown callback may not be called immediately as
the connection reference count is non-zero at that moment. So,
although the connection is shut down by the thread of receiving
packets, the thread of sending packets doesn't know it. Before
its shutdown callback is invoked to tell the sending thread its
connection has been closed, the sending thread may deliver
messages by tipc_conn_sendmsg(), this is why the following error
information appears:
"Sending subscription event failed, no memory"
To eliminate it, allow connection shutdown callback function to
be called before connection id is removed in tipc_close_conn(),
which makes the sending thread know the truth in time that its
socket is closed so that it doesn't send message to it. We also
remove the "Sending XXX failed..." error reporting for topology
and config services.
Signed-off-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: Erik Hugne <erik.hugne@ericsson.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Guillaume Nault [Thu, 6 Mar 2014 10:15:10 +0000 (11:15 +0100)]
l2tp: fix userspace reception on plain L2TP sockets
As pppol2tp_recv() never queues up packets to plain L2TP sockets,
pppol2tp_recvmsg() never returns data to userspace, thus making
the recv*() system calls unusable.
Instead of dropping packets when the L2TP socket isn't bound to a PPP
channel, this patch adds them to its reception queue.
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
Guillaume Nault [Thu, 6 Mar 2014 10:14:30 +0000 (11:14 +0100)]
l2tp: fix manual sequencing (de)activation in L2TPv2
Commit e0d4435f "l2tp: Update PPP-over-L2TP driver to work over L2TPv3"
broke the PPPOL2TP_SO_SENDSEQ setsockopt. The L2TP header length was
previously computed by pppol2tp_l2t_header_len() before each call to
l2tp_xmit_skb(). Now that header length is retrieved from the hdr_len
session field, this field must be updated every time the L2TP header
format is modified, or l2tp_xmit_skb() won't push the right amount of
data for the L2TP header.
This patch uses l2tp_session_set_header_len() to adjust hdr_len every
time sequencing is (de)activated from userspace (either by the
PPPOL2TP_SO_SENDSEQ setsockopt or the L2TP_ATTR_SEND_SEQ netlink
attribute).
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
Haiyang Zhang [Tue, 4 Mar 2014 22:11:06 +0000 (14:11 -0800)]
hyperv: Move state setting for link query
It moves the state setting for query into rndis_filter_receive_response().
All callbacks including query-complete and status-callback are synchronized
by channel->inbound_lock. This prevents pentential race between them.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Soren Brinkmann [Tue, 4 Mar 2014 16:46:40 +0000 (08:46 -0800)]
net: macb: DMA-unmap full rx-buffer
When allocating RX buffers a fixed size is used, while freeing is based
on actually received bytes, resulting in the following kernel warning
when CONFIG_DMA_API_DEBUG is enabled:
WARNING: CPU: 0 PID: 0 at lib/dma-debug.c:1051 check_unmap+0x258/0x894()
macb e000b000.ethernet: DMA-API: device driver frees DMA memory with different size [device address=0x000000002d170040] [map size=1536 bytes] [unmap size=60 bytes]
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.14.0-rc3-xilinx-00220-g49f84081ce4f #65
[<c001516c>] (unwind_backtrace) from [<c0011df8>] (show_stack+0x10/0x14)
[<c0011df8>] (show_stack) from [<c03c775c>] (dump_stack+0x7c/0xc8)
[<c03c775c>] (dump_stack) from [<c00245cc>] (warn_slowpath_common+0x60/0x84)
[<c00245cc>] (warn_slowpath_common) from [<c0024670>] (warn_slowpath_fmt+0x2c/0x3c)
[<c0024670>] (warn_slowpath_fmt) from [<c0227d44>] (check_unmap+0x258/0x894)
[<c0227d44>] (check_unmap) from [<c0228588>] (debug_dma_unmap_page+0x64/0x70)
[<c0228588>] (debug_dma_unmap_page) from [<c02ab78c>] (gem_rx+0x118/0x170)
[<c02ab78c>] (gem_rx) from [<c02ac4d4>] (macb_poll+0x24/0x94)
[<c02ac4d4>] (macb_poll) from [<c031222c>] (net_rx_action+0x6c/0x188)
[<c031222c>] (net_rx_action) from [<c0028a28>] (__do_softirq+0x108/0x280)
[<c0028a28>] (__do_softirq) from [<c0028e8c>] (irq_exit+0x84/0xf8)
[<c0028e8c>] (irq_exit) from [<c000f360>] (handle_IRQ+0x68/0x8c)
[<c000f360>] (handle_IRQ) from [<c0008528>] (gic_handle_irq+0x3c/0x60)
[<c0008528>] (gic_handle_irq) from [<c0012904>] (__irq_svc+0x44/0x78)
Exception stack(0xc056df20 to 0xc056df68)
df20: 00000001c057743000000000c057743004ce8e0d00000002edfce23800000000
df40: 04e20f7800000002c05981f40000000000000008c056df68c0064008c02d7658
df60: 20000013ffffffff
[<c0012904>] (__irq_svc) from [<c02d7658>] (cpuidle_enter_state+0x54/0xf8)
[<c02d7658>] (cpuidle_enter_state) from [<c02d77dc>] (cpuidle_idle_call+0xe0/0x138)
[<c02d77dc>] (cpuidle_idle_call) from [<c000f660>] (arch_cpu_idle+0x8/0x3c)
[<c000f660>] (arch_cpu_idle) from [<c006bec4>] (cpu_startup_entry+0xbc/0x124)
[<c006bec4>] (cpu_startup_entry) from [<c053daec>] (start_kernel+0x350/0x3b0)
---[ end trace d5fdc38641bd3a11 ]---
Mapped at:
[<c0227184>] debug_dma_map_page+0x48/0x11c
[<c02ab32c>] gem_rx_refill+0x154/0x1f8
[<c02ac7b4>] macb_open+0x270/0x3e0
[<c03152e0>] __dev_open+0x7c/0xfc
[<c031554c>] __dev_change_flags+0x8c/0x140
Fixing this by passing the same size which is passed during mapping the
memory to the unmap function as well.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com> Reviewed-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
Soren Brinkmann [Tue, 4 Mar 2014 16:46:39 +0000 (08:46 -0800)]
net: macb: Check DMA mappings for error
With CONFIG_DMA_API_DEBUG enabled the following warning is printed:
WARNING: CPU: 0 PID: 619 at lib/dma-debug.c:1101 check_unmap+0x758/0x894()
macb e000b000.ethernet: DMA-API: device driver failed to check map error[device address=0x000000002d171c02] [size=322 bytes] [mapped as single]
Modules linked in:
CPU: 0 PID: 619 Comm: udhcpc Not tainted 3.14.0-rc3-xilinx-00219-gd158fc7f36a2 #63
[<c001516c>] (unwind_backtrace) from [<c0011df8>] (show_stack+0x10/0x14)
[<c0011df8>] (show_stack) from [<c03c7714>] (dump_stack+0x7c/0xc8)
[<c03c7714>] (dump_stack) from [<c00245cc>] (warn_slowpath_common+0x60/0x84)
[<c00245cc>] (warn_slowpath_common) from [<c0024670>] (warn_slowpath_fmt+0x2c/0x3c)
[<c0024670>] (warn_slowpath_fmt) from [<c0228244>] (check_unmap+0x758/0x894)
[<c0228244>] (check_unmap) from [<c0228588>] (debug_dma_unmap_page+0x64/0x70)
[<c0228588>] (debug_dma_unmap_page) from [<c02aba64>] (macb_interrupt+0x1f8/0x2dc)
[<c02aba64>] (macb_interrupt) from [<c006c6e4>] (handle_irq_event_percpu+0x2c/0x178)
[<c006c6e4>] (handle_irq_event_percpu) from [<c006c86c>] (handle_irq_event+0x3c/0x5c)
[<c006c86c>] (handle_irq_event) from [<c006f548>] (handle_fasteoi_irq+0xb8/0x100)
[<c006f548>] (handle_fasteoi_irq) from [<c006c148>] (generic_handle_irq+0x20/0x30)
[<c006c148>] (generic_handle_irq) from [<c000f35c>] (handle_IRQ+0x64/0x8c)
[<c000f35c>] (handle_IRQ) from [<c0008528>] (gic_handle_irq+0x3c/0x60)
[<c0008528>] (gic_handle_irq) from [<c0012904>] (__irq_svc+0x44/0x78)
Exception stack(0xed197f60 to 0xed197fa8)
7f60: 0000013460000013bd94362ebd94362ebe96b37c00000014fffffd7200000122
7f80: c000ebe4ed1960000000000000000011c032c0d8ed197fa8c0064008c000ea20
7fa0: 60000013ffffffff
[<c0012904>] (__irq_svc) from [<c000ea20>] (ret_fast_syscall+0x0/0x48)
---[ end trace 478f921d0d542d1e ]---
Mapped at:
[<c0227184>] debug_dma_map_page+0x48/0x11c
[<c02aaca0>] macb_start_xmit+0x184/0x2a8
[<c03143c0>] dev_hard_start_xmit+0x334/0x470
[<c032c09c>] sch_direct_xmit+0x78/0x2f8
[<c0314814>] __dev_queue_xmit+0x318/0x708
due to missing checks of the dma mapping. Add the appropriate checks to fix
this.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com> Reviewed-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Tue, 4 Mar 2014 15:35:51 +0000 (16:35 +0100)]
net: sctp: fix skb leakage in COOKIE ECHO path of chunk->auth_chunk
While working on ec0223ec48a9 ("net: sctp: fix sctp_sf_do_5_1D_ce to
verify if we/peer is AUTH capable"), we noticed that there's a skb
memory leakage in the error path.
Running the same reproducer as in ec0223ec48a9 and by unconditionally
jumping to the error label (to simulate an error condition) in
sctp_sf_do_5_1D_ce() receive path lets kmemleak detector bark about
the unfreed chunk->auth_chunk skb clone:
What happens is that commit bbd0d59809f9 clones the skb containing
the AUTH chunk in sctp_endpoint_bh_rcv() when having the edge case
that an endpoint requires COOKIE-ECHO chunks to be authenticated:
When we enter sctp_sf_do_5_1D_ce() and before we actually get to
the point where we process (and subsequently free) a non-NULL
chunk->auth_chunk, we could hit the "goto nomem_init" path from
an error condition and thus leave the cloned skb around w/o
freeing it.
The fix is to centrally free such clones in sctp_chunk_destroy()
handler that is invoked from sctp_chunk_free() after all refs have
dropped; and also move both kfree_skb(chunk->auth_chunk) there,
so that chunk->auth_chunk is either NULL (since sctp_chunkify()
allocs new chunks through kmem_cache_zalloc()) or non-NULL with
a valid skb pointer. chunk->skb and chunk->auth_chunk are the
only skbs in the sctp_chunk structure that need to be handeled.
While at it, we should use consume_skb() for both. It is the same
as dev_kfree_skb() but more appropriately named as we are not
a device but a protocol. Also, this effectively replaces the
kfree_skb() from both invocations into consume_skb(). Functions
are the same only that kfree_skb() assumes that the frame was
being dropped after a failure (e.g. for tools like drop monitor),
usage of consume_skb() seems more appropriate in function
sctp_chunk_destroy() though.
Fixes: bbd0d59809f9 ("[SCTP]: Implement the receive and verification of AUTH chunk") Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Cc: Vlad Yasevich <yasevich@gmail.com> Cc: Neil Horman <nhorman@tuxdriver.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
hayeswang [Tue, 4 Mar 2014 12:47:48 +0000 (20:47 +0800)]
r8152: disable the ECM mode
There are known issues for switching the drivers between ECM mode and
vendor mode. The interrup transfer may become abnormal. The hardware
may have the opportunity to die if you change the configuration without
unloading the current driver first, because all the control transfers
of the current driver would fail after the command of switching the
configuration.
Although to use the ecm driver and vendor driver independently is fine,
it may have problems to change the driver from one to the other by
switching the configuration. Additionally, now the vendor mode driver
is more powerful than the ECM driver. Thus, disable the ECM mode driver,
and let r8152 to set the configuration to vendor mode and reset the
device automatically.
Signed-off-by: Hayes Wang <hayeswang@realtek.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Gavin Shan [Tue, 4 Mar 2014 07:35:20 +0000 (15:35 +0800)]
net/mlx4: Support shutdown() interface
In kexec scenario, we failed to load the mlx4 driver in the
second kernel because the ownership bit was hold by the first
kernel without release correctly.
The patch adds shutdown() interface so that the ownership can
be released correctly in the first kernel. It also helps avoiding
EEH error happened during boot stage of the second kernel because
of undesired traffic, which can't be handled by hardware during
that stage on Power platform.
Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com> Tested-by: Wei Yang <weiyang@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Lüssing [Tue, 4 Mar 2014 02:57:35 +0000 (03:57 +0100)]
bridge: multicast: add sanity check for query source addresses
MLD queries are supposed to have an IPv6 link-local source address
according to RFC2710, section 4 and RFC3810, section 5.1.14. This patch
adds a sanity check to ignore such broken MLD queries.
Without this check, such malformed MLD queries can result in a
denial of service: The queries are ignored by any MLD listener
therefore they will not respond with an MLD report. However,
without this patch these malformed MLD queries would enable the
snooping part in the bridge code, potentially shutting down the
according ports towards these hosts for multicast traffic as the
bridge did not learn about these listeners.
Reported-by: Jan Stancek <jstancek@redhat.com> Signed-off-by: Linus Lüssing <linus.luessing@web.de> Reviewed-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
net: fix for a race condition in the inet frag code
I stumbled upon this very serious bug while hunting for another one,
it's a very subtle race condition between inet_frag_evictor,
inet_frag_intern and the IPv4/6 frag_queue and expire functions
(basically the users of inet_frag_kill/inet_frag_put).
What happens is that after a fragment has been added to the hash chain
but before it's been added to the lru_list (inet_frag_lru_add) in
inet_frag_intern, it may get deleted (either by an expired timer if
the system load is high or the timer sufficiently low, or by the
fraq_queue function for different reasons) before it's added to the
lru_list, then after it gets added it's a matter of time for the
evictor to get to a piece of memory which has been freed leading to a
number of different bugs depending on what's left there.
I've been able to trigger this on both IPv4 and IPv6 (which is normal
as the frag code is the same), but it's been much more difficult to
trigger on IPv4 due to the protocol differences about how fragments
are treated.
The setup I used to reproduce this is: 2 machines with 4 x 10G bonded
in a RR bond, so the same flow can be seen on multiple cards at the
same time. Then I used multiple instances of ping/ping6 to generate
fragmented packets and flood the machines with them while running
other processes to load the attacked machine.
*It is very important to have the _same flow_ coming in on multiple CPUs
concurrently. Usually the attacked machine would die in less than 30
minutes, if configured properly to have many evictor calls and timeouts
it could happen in 10 minutes or so.
An important point to make is that any caller (frag_queue or timer) of
inet_frag_kill will remove both the timer refcount and the
original/guarding refcount thus removing everything that's keeping the
frag from being freed at the next inet_frag_put. All of this could
happen before the frag was ever added to the LRU list, then it gets
added and the evictor uses a freed fragment.
An example for IPv6 would be if a fragment is being added and is at
the stage of being inserted in the hash after the hash lock is
released, but before inet_frag_lru_add executes (or is able to obtain
the lru lock) another overlapping fragment for the same flow arrives
at a different CPU which finds it in the hash, but since it's
overlapping it drops it invoking inet_frag_kill and thus removing all
guarding refcounts, and afterwards freeing it by invoking
inet_frag_put which removes the last refcount added previously by
inet_frag_find, then inet_frag_lru_add gets executed by
inet_frag_intern and we have a freed fragment in the lru_list.
The fix is simple, just move the lru_add under the hash chain locked
region so when a removing function is called it'll have to wait for
the fragment to be added to the lru_list, and then it'll remove it (it
works because the hash chain removal is done before the lru_list one
and there's no window between the two list adds when the frag can get
dropped). With this fix applied I couldn't kill the same machine in 24
hours with the same setup.
Fixes: 3ef0eb0db4bf ("net: frag, move LRU list maintenance outside of
rwlock")
CC: Florian Westphal <fw@strlen.de> CC: Jesper Dangaard Brouer <brouer@redhat.com> CC: David S. Miller <davem@davemloft.net> Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Johannes Berg [Tue, 4 Mar 2014 12:46:53 +0000 (13:46 +0100)]
mac80211: clear sequence/fragment number in QoS-null frames
Avoid leaking data by sending uninitialized memory and setting an
invalid (non-zero) fragment number (the sequence number is ignored
anyway) by setting the seq_ctrl field to zero.
Cc: stable@vger.kernel.org Fixes: 3f52b7e328c5 ("mac80211: mesh power save basics") Fixes: ce662b44ce22 ("mac80211: send (QoS) Null if no buffered frames") Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
iwlwifi: mvm: don't WARN when statistics are handled late
Since the statistics handler is asynchrous, it can very well
be that we will handle the statistics (hence the RSSI
fluctuation) when we already disassociated.
Don't WARN on this case.
This solves: https://bugzilla.redhat.com/show_bug.cgi?id=1071998
1) Fix memory leak in ieee80211_prep_connection(), sta_info leaked on
error. From Eytan Lifshitz.
2) Unintentional switch case fallthrough in nft_reject_inet_eval(),
from Patrick McHardy.
3) Must check if payload lenth is a power of 2 in
nft_payload_select_ops(), from Nikolay Aleksandrov.
4) Fix mis-checksumming in xen-netfront driver, ip_hdr() is not in the
correct place when we invoke skb_checksum_setup(). From Wei Liu.
5) TUN driver should not advertise HW vlan offload features in
vlan_features. Fix from Fernando Luis Vazquez Cao.
6) IPV6_VTI needs to select NET_IPV_TUNNEL to avoid build errors, fix
from Steffen Klassert.
7) Add missing locking in xfrm_migrade_state_find(), we must hold the
per-namespace xfrm_state_lock while traversing the lists. Fix from
Steffen Klassert.
8) Missing locking in ath9k driver, access to tid->sched must be done
under ath_txq_lock(). Fix from Stanislaw Gruszka.
9) Fix two bugs in TCP fastopen. First respect the size argument given
to tcp_sendmsg() in the fastopen path, and secondly prevent
tcp_send_syn_data() from potentially using order-5 allocations.
From Eric Dumazet.
10) Fix handling of default neigh garbage collection params, from Jiri
Pirko.
11) Fix cwnd bloat and over-inflation of RTT when transmit segmentation
is in use. From Eric Dumazet.
12) Missing initialization of Realtek r8169 driver's statistics
seqlocks. Fix from Kyle McMartin.
13) Fix RTNL assertion failures in 802.3ad and AB ARP monitor of bonding
driver, from Ding Tianhong.
14) Bonding slave release race can cause divide by zero, fix from
Nikolay Aleksandrov.
15) Overzealous return from neigh_periodic_work() causes reachability
time to not be computed. Fix from Duain Jiong.
16) Fix regression in ipv6_find_hdr(), it should not return -ENOENT when
a specific target is specified and found. From Hans Schillstrom.
17) Fix VLAN tag stripping regression in BNA driver, from Ivan Vecera.
18) Tail loss probe can calculate bogus RTTs due to missing packet
marking on retransmit. Fix from Yuchung Cheng.
19) We cannot do skb_dst_drop() in iptunnel_pull_header() because
multicast loopback detection in later code paths need access to
skb_rtable(). Fix from Xin Long.
20) The macvlan driver regresses in that it propagates lower device
offload support disables into itself, causing severe slowdowns when
running over a bridge. Provide the software offloads always on
macvlan devices to deal with this and the regression is gone. From
Vlad Yasevich.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (103 commits)
macvlan: Add support for 'always_on' offload features
net: sctp: fix sctp_sf_do_5_1D_ce to verify if we/peer is AUTH capable
ip_tunnel:multicast process cause panic due to skb->_skb_refdst NULL pointer
net: cpsw: fix cpdma rx descriptor leak on down interface
be2net: isolate TX workarounds not applicable to Skyhawk-R
be2net: Fix skb double free in be_xmit_wrokarounds() failure path
be2net: clear promiscuous bits in adapter->flags while disabling promiscuous mode
be2net: Fix to reset transparent vlan tagging
qlcnic: dcb: a couple off by one bugs
tcp: fix bogus RTT on special retransmission
hsr: off by one sanity check in hsr_register_frame_in()
can: remove CAN FD compatibility for CAN 2.0 sockets
can: flexcan: factor out soft reset into seperate funtion
can: flexcan: flexcan_remove(): add missing netif_napi_del()
can: flexcan: fix transition from and to freeze mode in chip_{,un}freeze
can: flexcan: factor out transceiver {en,dis}able into seperate functions
can: flexcan: fix transition from and to low power mode in chip_{en,dis}able
can: flexcan: flexcan_open(): fix error path if flexcan_chip_start() fails
can: flexcan: fix shutdown: first disable chip, then all interrupts
USB AX88179/178A: Support D-Link DUB-1312
...
Linus Torvalds [Tue, 4 Mar 2014 16:41:42 +0000 (08:41 -0800)]
Merge tag 'regulator-v3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"A couple of fixes here which ensure that regulators using the core
support for GPIO enables work in all cases by ensuring that helpers
are used consistently rather than open coding in places and hence not
having GPIO support in some of them"
* tag 'regulator-v3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: core: Replace direct ops->disable usage
regulator: core: Replace direct ops->enable usage
Linus Torvalds [Tue, 4 Mar 2014 16:29:39 +0000 (08:29 -0800)]
Merge branch 'akpm' (patches from Andrew Morton)
Merge misc fixes from Andrew Morton.
* emailed patches from Andrew Morton akpm@linux-foundation.org>:
mm: page_alloc: exempt GFP_THISNODE allocations from zone fairness
mm: numa: bugfix for LAST_CPUPID_NOT_IN_PAGE_FLAGS
MAINTAINERS: add and correct types of some "T:" entries
MAINTAINERS: use tab for separator
rapidio/tsi721: fix tasklet termination in dma channel release
hfsplus: fix remount issue
zram: avoid null access when fail to alloc meta
sh: prefix sh-specific "CCR" and "CCR2" by "SH_"
ocfs2: fix quota file corruption
drivers/rtc/rtc-s3c.c: fix incorrect way of save/restore of S3C2410_TICNT for TYPE_S3C64XX
kallsyms: fix absolute addresses for kASLR
scripts/gen_initramfs_list.sh: fix flags for initramfs LZ4 compression
mm: include VM_MIXEDMAP flag in the VM_SPECIAL list to avoid m(un)locking
memcg: reparent charges of children before processing parent
memcg: fix endless loop in __mem_cgroup_iter_next()
lib/radix-tree.c: swapoff tmpfs radix_tree: remember to rcu_read_unlock
dma debug: account for cachelines and read-only mappings in overlap tracking
mm: close PageTail race
MAINTAINERS: EDAC: add Mauro and Borislav as interim patch collectors
Johannes Weiner [Mon, 3 Mar 2014 23:38:41 +0000 (15:38 -0800)]
mm: page_alloc: exempt GFP_THISNODE allocations from zone fairness
Jan Stancek reports manual page migration encountering allocation
failures after some pages when there is still plenty of memory free, and
bisected the problem down to commit 81c0a2bb515f ("mm: page_alloc: fair
zone allocator policy").
The problem is that GFP_THISNODE obeys the zone fairness allocation
batches on one hand, but doesn't reset them and wake kswapd on the other
hand. After a few of those allocations, the batches are exhausted and
the allocations fail.
Fixing this means either having GFP_THISNODE wake up kswapd, or
GFP_THISNODE not participating in zone fairness at all. The latter
seems safer as an acute bugfix, we can clean up later.
Reported-by: Jan Stancek <jstancek@redhat.com> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Rik van Riel <riel@redhat.com> Acked-by: Mel Gorman <mgorman@suse.de> Cc: <stable@kernel.org> [3.12+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Liu Ping Fan [Mon, 3 Mar 2014 23:38:39 +0000 (15:38 -0800)]
mm: numa: bugfix for LAST_CPUPID_NOT_IN_PAGE_FLAGS
When doing some numa tests on powerpc, I triggered an oops bug. I find
it is caused by using page->_last_cpupid. It should be initialized as
"-1 & LAST_CPUPID_MASK", but not "-1". Otherwise, in task_numa_fault(),
we will miss the checking (last_cpupid == (-1 & LAST_CPUPID_MASK)). And
finally cause an oops bug in task_numa_group(), since the online cpu is
less than possible cpu. This happen with CONFIG_SPARSE_VMEMMAP disabled
rapidio/tsi721: fix tasklet termination in dma channel release
This patch is a modification of the patch originally proposed by
Xiaotian Feng <xtfeng@gmail.com>: https://lkml.org/lkml/2012/11/5/413
This new version disables DMA channel interrupts and ensures that the
tasklet wil not be scheduled again before calling tasklet_kill().
Unfortunately the updated patch was not released at that time due to
planned rework of Tsi721 mport driver to use threaded interrupts (which
has yet to happen). Recently the issue was reported again:
https://lkml.org/lkml/2014/2/19/762.
Description from the original Xiaotian's patch:
"Some drivers use tasklet_disable in device remove/release process,
tasklet_disable will inc tasklet->count and return. If the tasklet is
not handled yet under some softirq pressure, the tasklet will be
placed on the tasklet_vec, never have a chance to be excuted. This
might lead to a heavy loaded ksoftirqd, wakeup with pending_softirq,
but tasklet is disabled. tasklet_kill should be used in this case."
This patch is applicable to kernel versions starting from v3.5.
Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Xiaotian Feng <xtfeng@gmail.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Cc: Mike Galbraith <bitbucket@online.de> Cc: <stable@vger.kernel.org> [3.5+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Current implementation of HFS+ driver has small issue with remount
option. Namely, for example, you are unable to remount from RO mode
into RW mode by means of command "mount -o remount,rw /dev/loop0
/mnt/hfsplus". Trying to execute sequence of commands results in an
error message:
mount /dev/loop0 /mnt/hfsplus
mount -o remount,ro /dev/loop0 /mnt/hfsplus
mount -o remount,rw /dev/loop0 /mnt/hfsplus
mount: you must specify the filesystem type
mount -t hfsplus -o remount,rw /dev/loop0 /mnt/hfsplus
mount: /mnt/hfsplus not mounted or bad option
The reason of such issue is failure of mount syscall:
Namely, hfsplus_parse_options_remount() method receives empty "input"
argument and return false in such case. As a result, hfsplus_remount()
returns -EINVAL error code.
This patch fixes the issue by means of return true for the case of empty
"input" argument in hfsplus_parse_options_remount() method.
Signed-off-by: Vyacheslav Dubeyko <slava@dubeyko.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jan Kara [Mon, 3 Mar 2014 23:38:32 +0000 (15:38 -0800)]
ocfs2: fix quota file corruption
Global quota files are accessed from different nodes. Thus we cannot
cache offset of quota structure in the quota file after we drop our node
reference count to it because after that moment quota structure may be
freed and reallocated elsewhere by a different node resulting in
corruption of quota file.
Fix the problem by clearing dq_off when we are releasing dquot structure.
We also remove the DB_READ_B handling because it is useless -
DQ_ACTIVE_B is set iff DQ_READ_B is set.
Signed-off-by: Jan Kara <jack@suse.cz> Cc: Goldwyn Rodrigues <rgoldwyn@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vikas Sajjan [Mon, 3 Mar 2014 23:38:31 +0000 (15:38 -0800)]
drivers/rtc/rtc-s3c.c: fix incorrect way of save/restore of S3C2410_TICNT for TYPE_S3C64XX
On exynos5250, exynos5420 and exynos5260 it was observed that, after 1
cycle of S2R, the rtc-tick occurs at a very fast rate as compared to the
rtc-tick occuring before S2R.
This patch fixes the above issue by correcting the wrong way of
save/restore of S3C2410_TICNT for TYPE_S3C64XX.
Signed-off-by: Vikas Sajjan <vikas.sajjan@samsung.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rob Herring <robh+dt@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Honig [Mon, 3 Mar 2014 23:38:30 +0000 (15:38 -0800)]
kallsyms: fix absolute addresses for kASLR
Currently symbols that are absolute addresses are incorrectly displayed
in /proc/kallsyms if the kernel is loaded with kASLR.
The problem was that the scripts/kallsyms.c file which generates the
array of symbol names and addresses uses an relocatable value for all
symbols, even absolute symbols. This patch fixes that.
Several kallsyms output in different boot states for comparison:
Signed-off-by: Andy Honig <ahonig@google.com> Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Michal Marek <mmarek@suse.cz> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Daniel M. Weeks [Mon, 3 Mar 2014 23:38:28 +0000 (15:38 -0800)]
scripts/gen_initramfs_list.sh: fix flags for initramfs LZ4 compression
LZ4 as implemented in the kernel differs from the default method now
used by the reference implementation of LZ4. Until the in-kernel method
is updated to support the new default, passing the legacy flag (-l) to
the compressor is necessary. Without this flag the kernel-generated,
LZ4-compressed initramfs is junk.
Kyungsik said:
: It seems that lz4 supports legacy format with the same option as lz4c
: does. Just looking at the first few bytes of lz4 compressed image, we can
: see whether it is new format or not.
:
: It shows new format magic number without this patch. New format magic
: number is 0x184d2204.
:
: $ hexdump -C ./initramfs_data.cpio.lz4 |more
: 00000000 04 22 4d 18 64 70 b9 69 (Little Endian)
: ...
:
: Currently kernel supports legacy format only.
Signed-off-by: Daniel M. Weeks <dan@danweeks.net> Cc: Michal Marek <mmarek@suse.cz> Acked-by: Kyungsik Lee <kyungsik.lee@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
because munlock_vma_pages_range() thinks it's unexpectedly in the middle
of a THP page. This can be reproduced with default config since 3.11
kernels. A reproducer can be found in the kernel's selftest directory
for networking by running ./psock_tpacket.
The problem is that an order=2 compound page (allocated by
alloc_one_pg_vec_page() is part of the munlocked VM_MIXEDMAP vma (mapped
by packet_mmap()) and mistaken for a THP page and assumed to be order=9.
The checks for THP in munlock came with commit ff6a6da60b89 ("mm:
accelerate munlock() treatment of THP pages"), i.e. since 3.9, but did
not trigger a bug. It just makes munlock_vma_pages_range() skip such
compound pages until the next 512-pages-aligned page, when it encounters
a head page. This is however not a problem for vma's where mlocking has
no effect anyway, but it can distort the accounting.
Since commit 7225522bb429 ("mm: munlock: batch non-THP page isolation
and munlock+putback using pagevec") this can trigger a VM_BUG_ON in
PageTransHuge() check.
This patch fixes the issue by adding VM_MIXEDMAP flag to VM_SPECIAL, a
list of flags that make vma's non-mlockable and non-mergeable. The
reasoning is that VM_MIXEDMAP vma's are similar to VM_PFNMAP, which is
already on the VM_SPECIAL list, and both are intended for non-LRU pages
where mlocking makes no sense anyway. Related Lkml discussion can be
found in [2].
memcg: reparent charges of children before processing parent
Sometimes the cleanup after memcg hierarchy testing gets stuck in
mem_cgroup_reparent_charges(), unable to bring non-kmem usage down to 0.
There may turn out to be several causes, but a major cause is this: the
workitem to offline parent can get run before workitem to offline child;
parent's mem_cgroup_reparent_charges() circles around waiting for the
child's pages to be reparented to its lrus, but it's holding
cgroup_mutex which prevents the child from reaching its
mem_cgroup_reparent_charges().
Further testing showed that an ordered workqueue for cgroup_destroy_wq
is not always good enough: percpu_ref_kill_and_confirm's call_rcu_sched
stage on the way can mess up the order before reaching the workqueue.
Instead, when offlining a memcg, call mem_cgroup_reparent_charges() on
all its children (and grandchildren, in the correct order) to have their
charges reparented first.
Fixes: e5fca243abae ("cgroup: use a dedicated workqueue for cgroup destruction") Signed-off-by: Filipe Brandenburger <filbranden@google.com> Signed-off-by: Hugh Dickins <hughd@google.com> Reviewed-by: Tejun Heo <tj@kernel.org> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: <stable@vger.kernel.org> [v3.10+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hugh Dickins [Mon, 3 Mar 2014 23:38:24 +0000 (15:38 -0800)]
memcg: fix endless loop in __mem_cgroup_iter_next()
Commit 0eef615665ed ("memcg: fix css reference leak and endless loop in
mem_cgroup_iter") got the interaction with the commit a few before it d8ad30559715 ("mm/memcg: iteration skip memcgs not yet fully
initialized") slightly wrong, and we didn't notice at the time.
It's elusive, and harder to get than the original, but for a couple of
days before rc1, I several times saw a endless loop similar to that
supposedly being fixed.
This time it was a tighter loop in __mem_cgroup_iter_next(): because we
can get here when our root has already been offlined, and the ordering
of conditions was such that we then just cycled around forever.
Fixes: 0eef615665ed ("memcg: fix css reference leak and endless loop in mem_cgroup_iter"). Signed-off-by: Hugh Dickins <hughd@google.com> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Greg Thelen <gthelen@google.com> Cc: <stable@vger.kernel.org> [3.12+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hugh Dickins [Mon, 3 Mar 2014 23:38:23 +0000 (15:38 -0800)]
lib/radix-tree.c: swapoff tmpfs radix_tree: remember to rcu_read_unlock
Running fsx on tmpfs with concurrent memhog-swapoff-swapon, lots of
BUG: sleeping function called from invalid context at kernel/fork.c:606
in_atomic(): 0, irqs_disabled(): 0, pid: 1394, name: swapoff
1 lock held by swapoff/1394:
#0: (rcu_read_lock){.+.+.+}, at: [<ffffffff812520a1>] radix_tree_locate_item+0x1f/0x2b6
followed by
================================================
[ BUG: lock held when returning to user space! ]
3.14.0-rc1 #3 Not tainted
------------------------------------------------
swapoff/1394 is leaving the kernel with locks still held!
1 lock held by swapoff/1394:
#0: (rcu_read_lock){.+.+.+}, at: [<ffffffff812520a1>] radix_tree_locate_item+0x1f/0x2b6
after which the system recovered nicely.
Whoops, I long ago forgot the rcu_read_unlock() on one unlikely branch.
Fixes e504f3fdd63d ("tmpfs radix_tree: locate_item to speed up swapoff")
Signed-off-by: Hugh Dickins <hughd@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dan Williams [Mon, 3 Mar 2014 23:38:21 +0000 (15:38 -0800)]
dma debug: account for cachelines and read-only mappings in overlap tracking
While debug_dma_assert_idle() checks if a given *page* is actively
undergoing dma the valid granularity of a dma mapping is a *cacheline*.
Sander's testing shows that the warning message "DMA-API: exceeded 7
overlapping mappings of pfn..." is falsely triggering. The test is
simply mapping multiple cachelines in a given page.
Ultimately we want overlap tracking to be valid as it is a real api
violation, so we need to track active mappings by cachelines. Update
the active dma tracking to use the page-frame-relative cacheline of the
mapping as the key, and update debug_dma_assert_idle() to check for all
possible mapped cachelines for a given page.
However, the need to track active mappings is only relevant when the
dma-mapping is writable by the device. In fact it is fairly standard
for read-only mappings to have hundreds or thousands of overlapping
mappings at once. Limiting the overlap tracking to writable
(!DMA_TO_DEVICE) eliminates this class of false-positive overlap
reports.
Note, the radix gang lookup is sub-optimal. It would be best if it
stopped fetching entries once the search passed a page boundary.
Nevertheless, this implementation does not perturb the original net_dma
failing case. That is to say the extra overhead does not show up in
terms of making the failing case pass due to a timing change.
Signed-off-by: Dan Williams <dan.j.williams@intel.com> Reported-by: Sander Eikelenboom <linux@eikelenboom.it> Reported-by: Dave Jones <davej@redhat.com> Tested-by: Dave Jones <davej@redhat.com> Tested-by: Sander Eikelenboom <linux@eikelenboom.it> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Francois Romieu <romieu@fr.zoreil.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Wei Liu <wei.liu2@citrix.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Rientjes [Mon, 3 Mar 2014 23:38:18 +0000 (15:38 -0800)]
mm: close PageTail race
Commit bf6bddf1924e ("mm: introduce compaction and migration for
ballooned pages") introduces page_count(page) into memory compaction
which dereferences page->first_page if PageTail(page).
This results in a very rare NULL pointer dereference on the
aforementioned page_count(page). Indeed, anything that does
compound_head(), including page_count() is susceptible to racing with
prep_compound_page() and seeing a NULL or dangling page->first_page
pointer.
This patch uses Andrea's implementation of compound_trans_head() that
deals with such a race and makes it the default compound_head()
implementation. This includes a read memory barrier that ensures that
if PageTail(head) is true that we return a head page that is neither
NULL nor dangling. The patch then adds a store memory barrier to
prep_compound_page() to ensure page->first_page is set.
This is the safest way to ensure we see the head page that we are
expecting, PageTail(page) is already in the unlikely() path and the
memory barriers are unfortunately required.
Hugetlbfs is the exception, we don't enforce a store memory barrier
during init since no race is possible.
Signed-off-by: David Rientjes <rientjes@google.com> Cc: Holger Kiehl <Holger.Kiehl@dwd.de> Cc: Christoph Lameter <cl@linux.com> Cc: Rafael Aquini <aquini@redhat.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Michal Hocko <mhocko@suse.cz> Cc: Mel Gorman <mgorman@suse.de> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vlad Yasevich [Mon, 3 Mar 2014 20:33:53 +0000 (15:33 -0500)]
macvlan: Add support for 'always_on' offload features
Macvlan currently inherits all of its features from the lower
device. When lower device disables offload support, this causes
macvlan to disable offload support as well. This causes
performance regression when using macvlan/macvtap in bridge
mode.
It can be easily demonstrated by creating 2 namespaces using
macvlan in bridge mode and running netperf between them:
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.0.1 () port 0 AF_INET
Recv Send Send
Socket Socket Message Elapsed
Size Size Size Time Throughput
bytes bytes bytes secs. 10^6bits/sec
87380 16384 16384 20.00 1204.61
To restore the performance, we add software offload features
to the list of "always_on" features for macvlan. This way
when a namespace or a guest using macvtap initially sends a
packet, this packet will not be segmented at macvlan level.
It will only be segmented when macvlan sends the packet
to the lower device.
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.0.1 () port 0 AF_INET
Recv Send Send
Socket Socket Message Elapsed
Size Size Size Time Throughput
bytes bytes bytes secs. 10^6bits/sec
87380 16384 16384 20.00 5507.35
Fixes: 6acf54f1cf0a6747bac9fea26f34cfc5a9029523 (macvtap: Add support of packet capture on macvtap device.) Fixes: 797f87f83b60685ff8a13fa0572d2f10393c50d3 (macvlan: fix netdev feature propagation from lower device) CC: Florian Westphal <fw@strlen.de> CC: Christian Borntraeger <borntraeger@de.ibm.com> CC: Jason Wang <jasowang@redhat.com> CC: Michael S. Tsirkin <mst@redhat.com> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Vlad Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 3 Mar 2014 21:42:47 +0000 (16:42 -0500)]
Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
John W. Linville says:
====================
Please pull this batch of fixes intended for the 3.14 stream...
For the mac80211 bits, Johannes says:
"This time I have a fix to get out of an 'infinite error state' in case
regulatory domain updates failed and two fixes for VHT associations: one
to not disconnect immediately when the AP uses more bandwidth than the
new regdomain would allow after a change due to association country
information getting used, and one for an issue in the code where
mac80211 doesn't correctly ignore a reserved field and then uses an HT
instead of VHT association."
For the iwlwifi bits, Emmanuel says:
"Johannes fixes a long standing bug in the AMPDU status reporting.
Max fixes the listen time which was way too long and causes trouble
to several APs."
Along with those, Bing Zhao marks the mwifiex_usb driver as _not_
supporting USB autosuspend after a number of problems with that have
been reported.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The receiver MUST use the HMAC algorithm indicated in
the HMAC Identifier field. If this algorithm was not
specified by the receiver in the HMAC-ALGO parameter in
the INIT or INIT-ACK chunk during association setup, the
AUTH chunk and all the chunks after it MUST be discarded
and an ERROR chunk SHOULD be sent with the error cause
defined in Section 4.1. [...] If no endpoint pair shared
key has been configured for that Shared Key Identifier,
all authenticated chunks MUST be silently discarded. [...]
When an endpoint requires COOKIE-ECHO chunks to be
authenticated, some special procedures have to be followed
because the reception of a COOKIE-ECHO chunk might result
in the creation of an SCTP association. If a packet arrives
containing an AUTH chunk as a first chunk, a COOKIE-ECHO
chunk as the second chunk, and possibly more chunks after
them, and the receiver does not have an STCB for that
packet, then authentication is based on the contents of
the COOKIE-ECHO chunk. In this situation, the receiver MUST
authenticate the chunks in the packet by using the RANDOM
parameters, CHUNKS parameters and HMAC_ALGO parameters
obtained from the COOKIE-ECHO chunk, and possibly a local
shared secret as inputs to the authentication procedure
specified in Section 6.3. If authentication fails, then
the packet is discarded. If the authentication is successful,
the COOKIE-ECHO and all the chunks after the COOKIE-ECHO
MUST be processed. If the receiver has an STCB, it MUST
process the AUTH chunk as described above using the STCB
from the existing association to authenticate the
COOKIE-ECHO chunk and all the chunks after it. [...]
Commit bbd0d59809f9 introduced the possibility to receive
and verification of AUTH chunk, including the edge case for
authenticated COOKIE-ECHO. On reception of COOKIE-ECHO,
the function sctp_sf_do_5_1D_ce() handles processing,
unpacks and creates a new association if it passed sanity
checks and also tests for authentication chunks being
present. After a new association has been processed, it
invokes sctp_process_init() on the new association and
walks through the parameter list it received from the INIT
chunk. It checks SCTP_PARAM_RANDOM, SCTP_PARAM_HMAC_ALGO
and SCTP_PARAM_CHUNKS, and copies them into asoc->peer
meta data (peer_random, peer_hmacs, peer_chunks) in case
sysctl -w net.sctp.auth_enable=1 is set. If in INIT's
SCTP_PARAM_SUPPORTED_EXT parameter SCTP_CID_AUTH is set,
peer_random != NULL and peer_hmacs != NULL the peer is to be
assumed asoc->peer.auth_capable=1, in any other case
asoc->peer.auth_capable=0.
Now, if in sctp_sf_do_5_1D_ce() chunk->auth_chunk is
available, we set up a fake auth chunk and pass that on to
sctp_sf_authenticate(), which at latest in
sctp_auth_calculate_hmac() reliably dereferences a NULL pointer
at position 0..0008 when setting up the crypto key in
crypto_hash_setkey() by using asoc->asoc_shared_key that is
NULL as condition key_id == asoc->active_key_id is true if
the AUTH chunk was injected correctly from remote. This
happens no matter what net.sctp.auth_enable sysctl says.
The fix is to check for net->sctp.auth_enable and for
asoc->peer.auth_capable before doing any operations like
sctp_sf_authenticate() as no key is activated in
sctp_auth_asoc_init_active_key() for each case.
Now as RFC4895 section 6.3 states that if the used HMAC-ALGO
passed from the INIT chunk was not used in the AUTH chunk, we
SHOULD send an error; however in this case it would be better
to just silently discard such a maliciously prepared handshake
as we didn't even receive a parameter at all. Also, as our
endpoint has no shared key configured, section 6.3 says that
MUST silently discard, which we are doing from now onwards.
Before calling sctp_sf_pdiscard(), we need not only to free
the association, but also the chunk->auth_chunk skb, as
commit bbd0d59809f9 created a skb clone in that case.
I have tested this locally by using netfilter's nfqueue and
re-injecting packets into the local stack after maliciously
modifying the INIT chunk (removing RANDOM; HMAC-ALGO param)
and the SCTP packet containing the COOKIE_ECHO (injecting
AUTH chunk before COOKIE_ECHO). Fixed with this patch applied.
Fixes: bbd0d59809f9 ("[SCTP]: Implement the receive and verification of AUTH chunk") Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Cc: Vlad Yasevich <yasevich@gmail.com> Cc: Neil Horman <nhorman@tuxdriver.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
====================
this is a pull request of 8 patches. Oliver Hartkopp contributes a patch which
removes the CAN FD compatibility for CAN 2.0 sockets, as it turns out that this
compatibility has some conceptual cornercases. The remaining 7 patches are by
me, they address a problem in the flexcan driver. When shutting down the
interface ("ifconfig can0 down") under heavy network load the whole system will
hang. This series reworks the actual sequence in close() and the transition
from and to the low power modes of the CAN controller.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Xin Long [Mon, 3 Mar 2014 12:18:36 +0000 (20:18 +0800)]
ip_tunnel:multicast process cause panic due to skb->_skb_refdst NULL pointer
when ip_tunnel process multicast packets, it may check if the packet is looped
back packet though 'rt_is_output_route(skb_rtable(skb))' in ip_tunnel_rcv(),
but before that , skb->_skb_refdst has been dropped in iptunnel_pull_header(),
so which leads to a panic.
fix the bug: https://bugzilla.kernel.org/show_bug.cgi?id=70681
Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Schuyler Patton [Mon, 3 Mar 2014 10:49:06 +0000 (16:19 +0530)]
net: cpsw: fix cpdma rx descriptor leak on down interface
This patch fixes a CPDMA RX Descriptor leak that occurs after taking
the interface down when the CPSW is in Dual MAC mode. Previously
the CPSW_ALE port was left open up which causes packets to be received
and processed by the RX interrupt handler and were passed to the
non active network interface where they were ignored.
The fix is for the slave_stop function of the selected interface
to disable the respective CPSW_ALE Port from forwarding packets. This
blocks traffic from being received on the inactive interface.
Signed-off-by: Schuyler Patton <spatton@ti.com> Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
be2net: isolate TX workarounds not applicable to Skyhawk-R
Some of TX workarounds in be_xmit_workarounds() routine
are not applicable (and result in HW errors) to Skyhawk-R chip.
Isolate BE3-R/Lancer specific workarounds to a separate routine.
Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com> Signed-off-by: Sathya Perla <sathya.perla@emulex.com> Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
be2net: Fix skb double free in be_xmit_wrokarounds() failure path
skb_padto(), skb_share_check() and __vlan_put_tag() routines free
skb when they return an error. This patch fixes be_xmit_workarounds()
to not free skb again in such cases.
Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com> Signed-off-by: Sathya Perla <sathya.perla@emulex.com> Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Somnath kotur [Mon, 3 Mar 2014 08:54:43 +0000 (14:24 +0530)]
be2net: clear promiscuous bits in adapter->flags while disabling promiscuous mode
We should clear promiscuous bits in adapter->flags while disabling promiscuous
mode. Else we will not put interface back into VLAN promisc mode if the vlans
already added exceeds the maximum limit.
Signed-off-by: Kalesh AP <kalesh.purayil@emulex.com> Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Somnath Kotur [Mon, 3 Mar 2014 08:54:20 +0000 (14:24 +0530)]
be2net: Fix to reset transparent vlan tagging
For disabling transparent tagging issue SET_HSW_CONFIG with pvid_valid=1
and pvid=0xFFFF and not with the default pvid as this case would fail in Lancer.
Hence removing the get_hsw_config call from be_vf_setup() as it's
only use of getting default pvid is no longer needed.
Also do proper housekeeping only if the FW command succeeds.
Signed-off-by: Kalesh AP <kalesh.purayil@emulex.com> Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Sat, 1 Mar 2014 13:54:36 +0000 (16:54 +0300)]
qlcnic: dcb: a couple off by one bugs
The ->tc_cfg[] array has QLC_DCB_MAX_TC (8) elements so the check is
off by one. These functions are always called with valid values though
so it doesn't affect how the code works.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Yuchung Cheng [Sat, 1 Mar 2014 00:42:26 +0000 (16:42 -0800)]
tcp: fix bogus RTT on special retransmission
RTT may be bogus with tall loss probe (TLP) when a packet
is retransmitted and latter (s)acked without TCPCB_SACKED_RETRANS flag.
For example, TLP calls __tcp_retransmit_skb() instead of
tcp_retransmit_skb(). The skb timestamps are updated but the sacked
flag is not marked with TCPCB_SACKED_RETRANS. As a result we'll
get bogus RTT in tcp_clean_rtx_queue() or in tcp_sacktag_one() on
spurious retransmission.
The fix is to apply the sticky flag TCP_EVER_RETRANS to enforce Karn's
check on RTT sampling. However this will disable F-RTO if timeout occurs
after TLP, by resetting undo_marker in tcp_enter_loss(). We relax this
check to only if any pending retransmists are still in-flight.
Signed-off-by: Yuchung Cheng <ycheng@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Acked-by: Nandita Dukkipati <nanditad@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Carpenter [Fri, 28 Feb 2014 23:18:57 +0000 (02:18 +0300)]
hsr: off by one sanity check in hsr_register_frame_in()
This is a sanity check and we never pass invalid values so this patch
doesn't change anything. However the node->time_in[] array has
HSR_MAX_SLAVE (2) elements and not HSR_MAX_DEV (3).
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Mon, 3 Mar 2014 18:49:24 +0000 (10:49 -0800)]
Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
"Misc fixes, most of them SCHED_DEADLINE fallout"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/deadline: Prevent rt_time growth to infinity
sched/deadline: Switch CPU's presence test order
sched/deadline: Cleanup RT leftovers from {inc/dec}_dl_migration
sched: Fix double normalization of vruntime
Linus Torvalds [Mon, 3 Mar 2014 18:48:48 +0000 (10:48 -0800)]
Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull liblockdep fixes from Ingo Molnar:
"A handful of build fixes for liblockdep"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tools/liblockdep: Use realpath for srctree and objtree
tools/liblockdep: Add a stub for new rcu_is_watching
tools/liblockdep: Mark runtests.sh as executable
tools/liblockdep: Add include directory to allow tests to compile
tools/liblockdep: Fix include of asm/hash.h
tools/liblockdep: Fix initialization code path
Linus Torvalds [Mon, 3 Mar 2014 18:47:46 +0000 (10:47 -0800)]
Merge tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux
Pull clk framework fixes from Mike Turquette:
"Clock framework and driver fixes, all of which fix user-visible
regressions.
There is a single framework fix that prevents dereferencing a NULL
pointer when calling clk_get. The range of fixes for clock driver
regressions spans memory leak fixes, touching the wrong registers that
cause things to explode, misconfigured clock rates that result in
non-responsive devices and even some boot failures. The most benign
fix is DT binding doc typo. It is a stable ABI exposed from the
kernel that was introduced in -rc1, so best to fix it now"
* tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mike.turquette/linux: (25 commits)
clk:at91: Fix memory leak in of_at91_clk_master_setup()
clk: nomadik: fix multiplatform problem
clk: Correct handling of NULL clk in __clk_{get, put}
clk: shmobile: Fix typo in MSTP clock DT bindings
clk: shmobile: rcar-gen2: Fix qspi divisor
clk: shmobile: rcar-gen2: Fix clock parent for all non-PLL clocks
clk: tegra124: remove gr2d and gr3d clocks
clk: tegra: Fix vic03 mux index
clk: shmobile: rcar-gen2: Fix qspi divisor
clk: shmobile: rcar-gen2: Fix clock parent all non-PLL clocks
clk: tegra: use max divider if divider overflows
clk: tegra: cclk_lp has a pllx/2 divider
clk: tegra: fix sdmmc clks on Tegra1x4
clk: tegra: fix host1x clock on Tegra124
clk: tegra: PLLD2 fixes for hdmi
clk: tegra: Fix PLLD mnp table
clk: tegra: Fix PLLP rate table
clk: tegra: Correct clock number for UARTE
clk: tegra: Add missing Tegra20 fuse clks
ARM: keystone: dts: fix clkvcp3 control register address
...
Oliver Hartkopp [Sat, 1 Mar 2014 14:31:53 +0000 (15:31 +0100)]
can: remove CAN FD compatibility for CAN 2.0 sockets
In commit e2d265d3b587 (canfd: add support for CAN FD in CAN_RAW sockets)
CAN FD frames with a payload length up to 8 byte are passed to legacy
sockets where the CAN FD support was not enabled by the application.
After some discussions with developers at a fair this well meant feature
leads to confusion as no clean switch for CAN / CAN FD is provided to the
application programmer. Additionally a compatibility like this for legacy
CAN_RAW sockets requires some compatibility handling for the sending, e.g.
make CAN2.0 frames a CAN FD frame with BRS at transmission time (?!?).
This will become a mess when people start to develop applications with
real CAN FD hardware. This patch reverts the bad compatibility code
together with the documentation describing the removed feature.
Acked-by: Stephane Grosjean <s.grosjean@peak-system.com> Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Johannes Berg [Mon, 3 Mar 2014 12:55:54 +0000 (13:55 +0100)]
cfg80211: remove racy beacon_interval assignment
In case of AP mode, the beacon interval is already reset to
zero inside cfg80211_stop_ap(), and in the other modes it
isn't relevant. Remove the assignment to remove a potential
race since the assignment isn't properly locked.
Reported-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Eliad Peller [Mon, 3 Mar 2014 11:37:14 +0000 (13:37 +0200)]
mac80211: consider virtual mon when calculating min_def
When calculating the current max bw required for
a channel context, we didn't consider the virtual
monitor interface, resulting in its channel context
being narrower than configured.
This broke monitor mode with iwlmvm, which uses the
minimal width.
can: flexcan: fix transition from and to freeze mode in chip_{,un}freeze
This patch factors out freeze and unfreeze of the CAN core into seperate
functions. Experiments have shown that the transition from and to freeze mode
may take several microseconds, especially the time entering the freeze mode
depends on the current bitrate.
This patch adds a while loop which polls the Freeze Mode ACK bit (FRZ_ACK) that
indicates a successfull mode change. If the function runs into a timeout a
error value is returned.
Cc: linux-stable <stable@vger.kernel.org> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
can: flexcan: fix transition from and to low power mode in chip_{en,dis}able
In flexcan_chip_enable() and flexcan_chip_disable() fixed delays are used.
Experiments have shown that the transition from and to low power mode may take
several microseconds.
This patch adds a while loop which polls the Low Power Mode ACK bit (LPM_ACK)
that indicates a successfull mode change. If the function runs into a timeout a
error value is returned.
Cc: linux-stable <stable@vger.kernel.org> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Hauke Mehrtens [Sun, 2 Mar 2014 16:29:34 +0000 (17:29 +0100)]
b44: always set duplex mode why phy changes
Without this patch b44_check_phy() was called when the phy called the
adjust callback. This method only change the mac duplex mode when the
carrier was off. When the phy changed the duplex mode after the carrier
was on the mac was not changed. This happened when an external phy was
used.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Hauke Mehrtens [Sun, 2 Mar 2014 16:29:33 +0000 (17:29 +0100)]
b44: add calls to phy_{start,stop}
When support for external phys was added to b44, the calls to start and
stop the phy were missing in the mac driver. This adds the calls to
phy_start() and phy_stop().
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sun, 2 Mar 2014 23:15:07 +0000 (15:15 -0800)]
Merge tag 'usb-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are 2 USB patches for 3.14-rc5, one a new device id, and the
other fixes a reported problem with threaded irqs and the USB EHCI
driver"
* tag 'usb-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: ehci: fix deadlock when threadirqs option is used
USB: ftdi_sio: add Cressi Leonardo PID
Linus Torvalds [Sun, 2 Mar 2014 23:12:54 +0000 (15:12 -0800)]
Merge tag 'staging-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging tree fixes from Greg KH:
"Here are a few IIO fixes, and a new device id for a staging driver for
3.14-rc5. All have been in linux-next for a while, I did a final
merge to get the IIO fixes into this tree, they were incorrectly in
the char-misc tree for a few weeks, and I forgot to tell you to pull
them from there. This makes it a single pull request for you"
* tag 'staging-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: r8188eu: Add new device ID
staging:iio:adc:MXS:LRADC: fix touchscreen statemachine
iio:gyro: bug on L3GD20H gyroscope support
iio: cm32181: Change cm32181 ambient light sensor driver
iio: cm36651: Fix read/write integration time function.
Dave Airlie [Sun, 2 Mar 2014 23:04:41 +0000 (09:04 +1000)]
Merge branch 'drm-fixes-3.14' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
more radeon fixes
* 'drm-fixes-3.14' of git://people.freedesktop.org/~agd5f/linux:
drm/radeon: enable speaker allocation setup on dce3.2
drm/radeon: change audio enable logic
drm/radeon: fix audio disable on dce6+
drm/radeon: free uvd ring on unload
drm/radeon: disable pll sharing for DP on DCE4.1
drm/radeon: fix missing bo reservation
drm/radeon: print the supported atpx function mask
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