Oliver Hartkopp [Tue, 15 Apr 2014 17:30:00 +0000 (19:30 +0200)]
can: sja1000_isa: add locking for indirect register access mode
When accessing the SJA1000 controller registers in the indirect access mode,
writing the register number and reading/writing the data has to be an atomic
attempt.
As the sja1000_isa driver is an old style driver with a fixed number of
instances the locking variable depends on the same index like all the other
configuration elements given on the module command line.
As a positive side effect dev->dev_id is populated by the instance index,
which was missing in
3e66d0138c05d9 ("can: populate netdev::dev_id for udev
discrimination").
Reported-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Wolfgang Grandegger [Thu, 3 Apr 2014 18:41:24 +0000 (20:41 +0200)]
can: c_can_pci: enable PCI bus master only for MSI
Coverity complains that c_can_pci_probe() calls pci_enable_msi() without
checking the result:
CID 712278 (#1 of 1): Unchecked return value (CHECKED_RETURN) 3. check_return:
Calling pci_enable_msi_block without checking return value (as is done
elsewhere 88 out of 105 times).
88 pci_enable_msi(pdev);
This is CID 712278.
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Reported-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Wolfram Sang [Thu, 17 Apr 2014 08:57:18 +0000 (10:57 +0200)]
can: c_can: use proper type for 'instance'
Commit
6439fbce1075 (can: c_can: fix error checking of priv->instance in
probe()) found the warning but applied a suboptimal solution. Since, both
pdev->id and of_alias_get_id() return integers, it makes sense to convert the
variable to an integer and avoid the cast.
Signed-off-by: Wolfram Sang <wsa@sang-engineering.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:22 +0000 (08:13 +0000)]
can: c_can: Speed up tx buffer invalidation
It's suffcient to kill the TXIE bit in the message control register
even if the documentation of C and D CAN says that it's not allowed to
do that while MSGVAL is set. Reality tells a different story and this
change gives us another 2% of CPU back for not waiting on I/O.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:22 +0000 (08:13 +0000)]
can: c_can: Remove tx locking
Mark suggested to use one IF for the softirq and the other for the
xmit function to avoid the xmit lock.
That requires to write the frame into the interface first, then handle
the echo skb and store the dlc before committing the TX request to the
message ram.
We use an atomic to handle the active buffers instead of reading the
MSGVAL register as thats way faster especially on PCH/x86.
Suggested-by: Mark <mark5@del-llc.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:21 +0000 (08:13 +0000)]
can: c_can: Use proper u32 variables in c_can_write_msg_object()
Instead of obfuscating the code by artificial 16 bit splits use the
proper 32 bit assignments and split the result when writing to the
interface.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:21 +0000 (08:13 +0000)]
can: c_can: Cleanup c_can_write_msg_object()
Remove the MASK from the TX transfer side.
Make the code readable and get rid of the annoying IFX_WRITE_XXX_16BIT
macros which are just obfuscating the code.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:20 +0000 (08:13 +0000)]
can: c_can: Cleanup c_can_msg_obj_put/get()
Sigh!
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:19 +0000 (08:13 +0000)]
can: c_can: Cleanup c_can_inval_msg_object()
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:18 +0000 (08:13 +0000)]
can: c_can: Cleanup setup of receive buffers
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:18 +0000 (08:13 +0000)]
can: c_can: Cleanup c_can_read_msg_object()
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:17 +0000 (08:13 +0000)]
can: c_can: Cleanup irq enable/disable
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:17 +0000 (08:13 +0000)]
can: c_can: Work around C_CAN RX wreckage
Alexander reported that the new optimized handling of the RX fifo
causes random packet loss on Intel PCH C_CAN hardware.
After a few fruitless debugging sessions I got hold of a PCH (eg20t)
afflicted system. That machine does not have the CAN interface wired
up, but it was possible to reproduce the issue with the HW loopback
mode.
As Alexander observed correctly, clearing the NewDat flag along with
reading out the message buffer causes that issue on C_CAN, while D_CAN
handles that correctly.
Instead of restoring the original message buffer handling horror the
following workaround solves the issue:
transfer buffer to IF without clearing the NewDat
handle the message
clear NewDat bit
That's similar to the original code but conditional for C_CAN.
I really wonder why all user manuals (C_CAN, Intel PCH and some more)
recommend to clear the NewDat bit right away. The knows it all Oracle
operated by Gurgle does not unearth any useful information either. I
simply cannot believe that we are the first to uncover that HW issue.
Reported-and-tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:16 +0000 (08:13 +0000)]
can: c_can: Disable rx split as workaround
The RX buffer split causes packet loss in the hardware:
What happens is:
RX Packet 1 --> message buffer 1 (newdat bit is not cleared)
RX Packet 2 --> message buffer 2 (newdat bit is not cleared)
RX Packet 3 --> message buffer 3 (newdat bit is not cleared)
RX Packet 4 --> message buffer 4 (newdat bit is not cleared)
RX Packet 5 --> message buffer 5 (newdat bit is not cleared)
RX Packet 6 --> message buffer 6 (newdat bit is not cleared)
RX Packet 7 --> message buffer 7 (newdat bit is not cleared)
RX Packet 8 --> message buffer 8 (newdat bit is not cleared)
Clear newdat bit in message buffer 1
Clear newdat bit in message buffer 2
Clear newdat bit in message buffer 3
Clear newdat bit in message buffer 4
Clear newdat bit in message buffer 5
Clear newdat bit in message buffer 6
Clear newdat bit in message buffer 7
Clear newdat bit in message buffer 8
Now if during that clearing of newdat bits, a new message comes in,
the HW gets confused and drops it.
It does not matter how many of them you clear. I put a delay between
clear of buffer 1 and buffer 2 which was long enough that the message
should have been queued either in buffer 1 or buffer 9. But it did not
show up anywhere. The next message ended up in buffer 1. So the
hardware lost a packet of course without telling it via one of the
error handlers.
That does not happen on all clear newdat bit events. I see one of 10k
packets dropped in the scenario which allows us to reproduce. But the
trace looks always the same.
Not splitting the RX Buffer avoids the packet loss but can cause
reordering. It's hard to trigger, but it CAN happen.
With that mode we use the HW as it was probably designed for. We read
from the buffer 1 upwards and clear the buffer as we get the
message. That's how all microcontrollers use it. So I assume that the
way we handle the buffers was never really tested. According to the
public documentation it should just work :)
Let the user decide which evil is the lesser one.
[ Oliver Hartkopp: Provided a sane config option and help text and
made me switch to favour potential and unlikely reordering over
packet loss ]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:15 +0000 (08:13 +0000)]
can: c_can: Get rid of pointless interrupts
The driver handles pointlessly TWO interrupts per packet. The reason
is that it enables the status interrupt which fires for each rx and tx
packet and it enables the per message object interrupts as well.
The status interrupt merily acks or in case of D_CAN ignores the TX/RX
state and then the message object interrupt fires.
The message objects interrupts are only useful if all message objects
have hardware filters activated.
But we don't have that and its not simple to implement in that driver
without rewriting it completely.
So we can ditch the message object interrupts and handle the RX/TX
right away from the status interrupt. Instead of TWO we handle ONE.
Note: We must keep the TXIE/RXIE bits in the message buffers because
the status interrupt alone is not reliable enough in corner cases.
If we ever have the need for HW filtering, then this code needs a
complete overhaul and we can think about it then. For now we prefer a
lower interrupt load.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:15 +0000 (08:13 +0000)]
can: c_can: Avoid status register update for D_CAN
On D_CAN the RXOK, TXOK and LEC bits are cleared/set on read of the
status register. No need to update them.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:14 +0000 (08:13 +0000)]
can: c_can: Simplify buffer reenabling
Instead of writing to the message object we can simply clear the
NewDat bit with the get method.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:13 +0000 (08:13 +0000)]
can: c_can: Always update error stats
If the allocation of the error skb fails, we still want to see the
error statistics.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:13 +0000 (08:13 +0000)]
can: c_can: Fix berr reporting
Reading the LEC type with
return (mode & ENABLED) && (status & LEC_MASK);
is not guaranteed to return (status & LEC_MASK) if the enabled bit in
mode is set. It's guaranteed to return 0 or !=0.
Remove the inline function and call unconditionally into the
berr_handling code and return early when the reporting is disabled.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:12 +0000 (08:13 +0000)]
can: c_can: Handle state change correctly
If the allocation of an error skb fails, the state change handling
returns w/o doing any work. That leaves the interface in a wreckaged
state as the internal status is wrong.
Split the interface handling and the skb handling.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:12 +0000 (08:13 +0000)]
can: c_can: Do not access skb after net_receive_skb()
There is no guarantee that the skb is in the same state after calling
net_receive_skb(). It might be freed or reused. Not really harmful as
its a read access, except you turn on the proper debugging options
which catch a use after free.
The whole can subsystem is full of this. Copy and paste ....
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:11 +0000 (08:13 +0000)]
can: c_can: Make bus off interrupt disable logic work
The state change handler is called with device interrupts disabled
already. So no point in disabling them again when we enter bus off
state.
But what's worse is that we reenable the interrupts at the end of NAPI
poll unconditionally. So c_can_start() which is called from the
restart timer can trigger interrupts which confuse the hell out of the
half reinitialized driver/hw.
Remove the pointless device interrupt disable in the BUS_OFF handler
and prevent reenabling the device interrupts at the end of the poll
routine when the current state is BUS_OFF.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:10 +0000 (08:13 +0000)]
can: c_can: Fix startup logic
c_can_start() enables interrupts way too early. The first enabling
happens when setting the control mode in c_can_chip_config() and then
again at the end of the function.
But that happens before napi_enable() and that means that an interrupt
which comes in will disable interrupts again and call napi_schedule,
which ignores the request and the later napi_enable() is not making
thinks work either. So the interface is up with all device interrupts
disabled.
Move the device interrupt after napi_enable() and add it to the other
callsites of c_can_start() in c_can_set_mode() and c_can_power_up()
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Thomas Gleixner [Fri, 11 Apr 2014 08:13:10 +0000 (08:13 +0000)]
can: c_can_pci: Set the type of the IP core
All type checks in c_can.c are != BOSCH_D_CAN so nobody noticed so far
that the pci code does not update the type information.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
David S. Miller [Thu, 24 Apr 2014 17:51:29 +0000 (13:51 -0400)]
netfilter: Fix warning in nfnetlink_receive().
net/netfilter/nfnetlink.c: In function ‘nfnetlink_rcv’:
net/netfilter/nfnetlink.c:371:14: warning: unused variable ‘net’ [-Wunused-variable]
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 24 Apr 2014 17:45:04 +0000 (13:45 -0400)]
Merge branch 'netlink-caps'
Eric W. Biederman says:
====================
netlink: Preventing abuse when passing file descriptors.
Andy Lutomirski when looking at the networking stack noticed that it is
possible to trick privilged processes into calling write on a netlink
socket and send netlink messages they did not intend.
In particular from time to time there are suid applications that will
write to stdout or stderr without checking exactly what kind of file
descriptors those are and can be tricked into acting as a limited form
of suid cat. In other conversations the magic string CVE-2014-0181 has
been used to talk about this issue.
This patchset cleans things up a bit, adds some clean abstractions that
when used prevent this kind of problem and then finally changes all of
the handlers of netlink messages that I could find that call capable to
use netlink_ns_capable or an appropriate wrapper.
The abstraction netlink_ns_capable verifies that the original creator of
the netlink socket a message is sent from had the necessary capabilities
as well as verifying that the current sender of a netlink packet has the
necessary capabilities.
The idea is to prevent file descriptor passing of any form from
resulting in a file descriptor that can do more than it can for the
creator of the file descriptor.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric W. Biederman [Wed, 23 Apr 2014 21:29:27 +0000 (14:29 -0700)]
net: Use netlink_ns_capable to verify the permisions of netlink messages
It is possible by passing a netlink socket to a more privileged
executable and then to fool that executable into writing to the socket
data that happens to be valid netlink message to do something that
privileged executable did not intend to do.
To keep this from happening replace bare capable and ns_capable calls
with netlink_capable, netlink_net_calls and netlink_ns_capable calls.
Which act the same as the previous calls except they verify that the
opener of the socket had the desired permissions as well.
Reported-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric W. Biederman [Wed, 23 Apr 2014 21:28:03 +0000 (14:28 -0700)]
net: Add variants of capable for use on netlink messages
netlink_net_capable - The common case use, for operations that are safe on a network namespace
netlink_capable - For operations that are only known to be safe for the global root
netlink_ns_capable - The general case of capable used to handle special cases
__netlink_ns_capable - Same as netlink_ns_capable except taking a netlink_skb_parms instead of
the skbuff of a netlink message.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric W. Biederman [Wed, 23 Apr 2014 21:26:56 +0000 (14:26 -0700)]
net: Add variants of capable for use on on sockets
sk_net_capable - The common case, operations that are safe in a network namespace.
sk_capable - Operations that are not known to be safe in a network namespace
sk_ns_capable - The general case for special cases.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric W. Biederman [Wed, 23 Apr 2014 21:26:25 +0000 (14:26 -0700)]
net: Move the permission check in sock_diag_put_filterinfo to packet_diag_dump
The permission check in sock_diag_put_filterinfo is wrong, and it is so removed
from it's sources it is not clear why it is wrong. Move the computation
into packet_diag_dump and pass a bool of the result into sock_diag_filterinfo.
This does not yet correct the capability check but instead simply moves it to make
it clear what is going on.
Reported-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric W. Biederman [Wed, 23 Apr 2014 21:25:48 +0000 (14:25 -0700)]
netlink: Rename netlink_capable netlink_allowed
netlink_capable is a static internal function in af_netlink.c and we
have better uses for the name netlink_capable.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Claudiu Manoil [Wed, 23 Apr 2014 13:38:47 +0000 (16:38 +0300)]
gianfar: Check if phydev present on ethtool -A
This fixes a seg fault on 'ethtool -A' entry if the
interface is down. Obviously we need to have the
phy device initialized / "connected" (see of_phy_connect())
to be able to advertise pause frame capabilities.
Fixes:
23402bddf9e56eecb27bbd1e5467b3b79b3dbe58
Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 24 Apr 2014 17:31:23 +0000 (13:31 -0400)]
Merge branch 'qlcnic-net'
Shahed Shaikh says:
====================
qlcnic: Bug fixes
This patch series contains following fixes -
* Fix memory leak caused because of issuing mailbox
command which can not wait for its completion.
* Reset firmware API lock which might be in inconsistent state.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Rajesh Borundia [Wed, 23 Apr 2014 13:59:56 +0000 (09:59 -0400)]
qlcnic: Fix memory leak.
o In case QLC_83XX_MBX_CMD_NO_WAIT command type the calling
function does not free the memory as it does not wait for
response. So free it when get a response from adapter after
sending the command.
Signed-off-by: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sony Chacko [Wed, 23 Apr 2014 13:59:55 +0000 (09:59 -0400)]
qlcnic: Reset firmware API lock at driver load time
Some firmware versions fails to reset the lock during
initialization. Force reset firmware API lock during driver
probe to ensure lock availability.
Signed-off-by: Sony Chacko <sony.chacko@qlogic.com>
Signed-off-by: Shahed Shaikh <shahed.shaikh@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Wed, 23 Apr 2014 12:17:55 +0000 (14:17 +0200)]
team: forbid incorrect fall-through in notifier
There are two breaks missing there. The result is that userspace
receives multiple messages which might be confusing.
Introduced-by: 3d249d4c "net: introduce ethernet teaming device"
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jean Delvare [Wed, 23 Apr 2014 08:40:12 +0000 (10:40 +0200)]
net: cadence: Fix architecture dependencies
I was told that the Cadence macb driver is also useful on Microblaze.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Mark Brown <broonie@kernel.org>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Zi Shen Lim [Wed, 23 Apr 2014 03:04:42 +0000 (20:04 -0700)]
smc91x: improve definition of debug macros
Redefine some macros that were conditioned upon SMC_DEBUG level.
By allowing compiler to verify parameters used by these macros
unconditionally, we can flag compilation failures.
Compiler will still optimize out the unused code path depending on
SMC_DEBUG, so this is a net gain.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Zi Shen Lim <zlim.lnx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexei Starovoitov [Wed, 23 Apr 2014 03:18:57 +0000 (20:18 -0700)]
net: filter: initialize A and X registers
exisiting BPF verifier allows uninitialized access to registers,
'ret A' is considered to be a valid filter.
So initialize A and X to zero to prevent leaking kernel memory
In the future BPF verifier will be rejecting such filters
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Cc: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Tue, 22 Apr 2014 16:29:42 +0000 (17:29 +0100)]
net: Update my email address
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nicolas Dichtel [Tue, 22 Apr 2014 13:01:30 +0000 (15:01 +0200)]
vxlan: ensure to advertise the right fdb remote
The goal of this patch is to fix rtnelink notification. The main problem was
about notification for fdb entry with more than one remote. Before the patch,
when a remote was added to an existing fdb entry, the kernel advertised the
first remote instead of the added one. Also when a remote was removed from a fdb
entry with several remotes, the deleted remote was not advertised.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hubert Chaumette [Tue, 22 Apr 2014 13:01:04 +0000 (15:01 +0200)]
net/phy: micrel: fix bugged test on device tree loading for ksz9021
In ksz9021_load_values_from_of() val2 to val4 aren't tested against their
initialization value.
This causes the test to always succeed, and this value to be used as if it
was loaded from the devicetree instead of being ignored, in case of a
missing/invalid property in the ethernet OF device node.
As a result, the value "0" is written to the relevant registers.
Change the conditions to test against the right initialization value.
Signed-off-by: Hubert Chaumette <hchaumette@adeneo-embedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julia Lawall [Sun, 20 Apr 2014 09:48:33 +0000 (11:48 +0200)]
hisax/icc: add missing semicolon after label
A label just before a brace needs a following semicolon (empty statement).
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Zi Shen Lim [Sat, 19 Apr 2014 03:47:30 +0000 (20:47 -0700)]
smc91x: fix compile error when SMC_DEBUG >= 2
When SMC_DEBUG >= 2, we hit the following compilation error:
drivers/net/ethernet/smsc/smc91x.c:85:0:
drivers/net/ethernet/smsc/smc91x.c: In function ‘smc_findirq’:
drivers/net/ethernet/smsc/smc91x.c:1784:9: error: ‘dev’ undeclared (first use in this function)
DBG(2, dev, "%s: %s\n", CARDNAME, __func__);
^
Fix it by passing in the appropriate netdev pointer.
Signed-off-by: Zi Shen Lim <zlim.lnx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Byungho An [Fri, 18 Apr 2014 11:59:39 +0000 (20:59 +0900)]
net: sxgbe: Added phy_found error path
This patch adds phy_found error path when there is no phy device
and changes bus_name.
Signed-off-by: Byungho An <bh74.an@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Byungho An [Fri, 18 Apr 2014 11:59:36 +0000 (20:59 +0900)]
net: sxgbe: rearrange dma descriptor
This patch moves cksum_ctl to tx_rd_des23 from cksum_pktlen for correct checksum
offloading and modifies size for Tx/Rx descriptor.
Signed-off-by: Byungho An <bh74.an@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Amos Kong [Fri, 18 Apr 2014 05:45:41 +0000 (13:45 +0800)]
virtio_net: zero is an invald queue_pairs number
Execute "ethtool -L eth0 combined 0" in guest, if multiqueue
is enabled, virtnet_send_command() will return -EINVAL error,
there is a validation in QEMU.
But if multiqueue is disabled, virtnet_set_queues() will just
return zero (success). We should return error for this situation.
Signed-off-by: Amos Kong <akong@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Max Schwarz [Fri, 18 Apr 2014 00:17:32 +0000 (02:17 +0200)]
arc_emac: write initial MAC address from devicetree to hw
The MAC address retrieved from dt was not actually written to the
hardware. This meant proper communication was only possible after
changing the MAC address.
Fix that by always writing the mac address during probing.
Signed-off-by: Max Schwarz <max.schwarz@online.de>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lutomirski [Thu, 17 Apr 2014 04:41:34 +0000 (21:41 -0700)]
net: Fix ns_capable check in sock_diag_put_filterinfo
The caller needs capabilities on the namespace being queried, not on
their own namespace. This is a security bug, although it likely has
only a minor impact.
Cc: stable@vger.kernel.org
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Mon, 21 Apr 2014 16:12:08 +0000 (09:12 -0700)]
MAINTAINERS: SXGBE authors update
The mail address for Siva Reddy Kallam is bouncing, remove the email
address from the MAINTAINERS entry for Samsung's SXGBE driver.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 21 Apr 2014 16:58:38 +0000 (12:58 -0400)]
Merge branch 'master' of git://git./linux/kernel/git/jkirsher/net
Jeff Kirsher says:
====================
Intel Wired LAN Driver Updates
This series contains updates to e1000e, igb, ixgbe and i40e.
Most notably are Jakub's patches to clean up the Rx time stamping
code for ixgbe and the fix up of debug messages with proper termination.
Jesse's i40e patch fixes an issue reported by Eric Dumazet that the
i40e driver was allowing the hardware to replicate the PSH flag on
all segments of a TSO operation. With this fix, we are now configuring
the CWR bit to only be set in the first packet of a TSO and we
enable TSO_ECN in order to advertise to the stack that we do the right
thing on the wire.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sat, 19 Apr 2014 17:41:43 +0000 (10:41 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 fix from Ingo Molnar:
"This fixes the preemption-count imbalance crash reported by Owen
Kibel"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce: Fix CMCI preemption bugs
Linus Torvalds [Sat, 19 Apr 2014 17:40:51 +0000 (10:40 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
"Two fixes:
- a SCHED_DEADLINE task selection fix
- a sched/numa related lockdep splat fix"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched: Check for stop task appearance when balancing happens
sched/numa: Fix task_numa_free() lockdep splat
Linus Torvalds [Sat, 19 Apr 2014 17:40:11 +0000 (10:40 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"Two kernel side fixes:
- an Intel uncore PMU driver potential crash fix
- a kprobes/perf-call-graph interaction fix"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel: Use rdmsrl_safe() when initializing RAPL PMU
kprobes/x86: Fix page-fault handling logic
Linus Torvalds [Sat, 19 Apr 2014 17:35:30 +0000 (10:35 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Unfortunately this contains no easter eggs, its a bit larger than I'd
like, but I included a patch that just moves code from one file to
another and I'd like to avoid merge conflicts with that later, so it
makes it seem worse than it is,
Otherwise:
- radeon: fixes to use new microcode to stabilise some cards, use
some common displayport code, some runtime pm fixes, pll regression
fixes
- i915: fix for some context oopses, a warn in a used path, backlight
fixes
- nouveau: regression fix
- omap: a bunch of fixes"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (51 commits)
drm: bochs: drop unused struct fields
drm: bochs: add power management support
drm: cirrus: add power management support
drm: Split out drm_probe_helper.c from drm_crtc_helper.c
drm/plane-helper: Don't fake-implement primary plane disabling
drm/ast: fix value check in cbr_scan2
drm/nouveau/bios: fix a bit shift error introduced by 457e77b
drm/radeon/ci: make sure mc ucode is loaded before checking the size
drm/radeon/si: make sure mc ucode is loaded before checking the size
drm/radeon: improve PLL params if we don't match exactly v2
drm/radeon: memory leak on bo reservation failure. v2
drm/radeon: fix VCE fence command
drm/radeon: re-enable mclk dpm on R7 260X asics
drm/radeon: add support for newer mc ucode on CI (v2)
drm/radeon: add support for newer mc ucode on SI (v2)
drm/radeon: apply more strict limits for PLL params v2
drm/radeon: update CI DPM powertune settings
drm/radeon: fix runpm handling on APUs (v4)
drm/radeon: disable mclk dpm on R7 260X
drm/tegra: Remove gratuitous pad field
...
Jakub Kicinski [Wed, 2 Apr 2014 10:33:22 +0000 (10:33 +0000)]
e1000e/igb/ixgbe/i40e: fix message terminations
Add \n at the end of messages where missing, remove all \r.
Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Jakub Kicinski [Wed, 2 Apr 2014 10:33:28 +0000 (10:33 +0000)]
ixgbe: clean up Rx time stamping code
Time stamping resources are per-interface so there is no need
to keep separate last_rx_timestamp for each Rx ring, move
last_rx_timestamp to the adapter structure.
With last_rx_timestamp inside adapter, ixgbe_ptp_rx_hwtstamp()
inline function is reduced to a single if statement so it is
no longer necessary. If statement is placed directly in
ixgbe_process_skb_fields() fixing likely/unlikely marking.
Checks for q_vector or adapter to be NULL are superfluous.
Comment about taking I/O hit is a leftover from previous design.
Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Todd Fujinaka [Tue, 8 Apr 2014 05:36:15 +0000 (05:36 +0000)]
igb: fix stats for i210 rx_fifo_errors
RQDPC on i210/i211 is R/W not ReadClear. Clear after reading.
Signed-off-by: Todd Fujinaka <todd.fujinaka@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Dave Airlie [Sat, 19 Apr 2014 01:16:02 +0000 (11:16 +1000)]
Merge branch 'drm-next-3.15-wip' of git://people.freedesktop.org/~deathsimple/linux into drm-next
Some i2c fixes over DisplayPort.
* 'drm-next-3.15-wip' of git://people.freedesktop.org/~deathsimple/linux:
drm/radeon: Improve vramlimit module param documentation
drm/radeon: fix audio pin counts for DCE6+ (v2)
drm/radeon/dp: switch to the common i2c over aux code
drm/dp/i2c: Update comments about common i2c over dp assumptions (v3)
drm/dp/i2c: send bare addresses to properly reset i2c connections (v4)
drm/radeon/dp: handle zero sized i2c over aux transactions (v2)
drm/i915: support address only i2c-over-aux transactions
drm/tegra: dp: Support address-only I2C-over-AUX transactions
Hiroaki SHIMODA [Tue, 15 Apr 2014 08:20:19 +0000 (08:20 +0000)]
e1000e: Enclose e1000e_pm_thaw() with CONFIG_PM_SLEEP
Fix following compilation warning:
drivers/net/ethernet/intel/e1000e/netdev.c:6238:12: warning
‘e1000e_pm_thaw’ defined but not used [-Wunused-function]
static int e1000e_pm_thaw(struct device *dev)
^
Signed-off-by: Hiroaki SHIMODA <shimoda.hiroaki@gmail.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Vlad Yasevich [Sat, 5 Apr 2014 06:25:26 +0000 (06:25 +0000)]
e1000e: Correctly include VLAN_HLEN when changing interface MTU
When changing the interface mtu, the driver starts with a value
that doesn't include VLAN_HLEN. Later tests in the driver
set the rx_buffer_len based on the mtu. As a result, when
the user increases the mtu to 1504 (to support 802.1AD for example),
the driver rx_buffer_len does not change and frames longer
the 1522 bytes are rejected as too long.
Include VLAN_HLEN from the start so that an user mtu greater then
1500 bytes is correctly reflected in the driver rx_buffer_len.
CC: e1000-devel@lists.sourceforge.net
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Linus Torvalds [Sat, 19 Apr 2014 00:53:46 +0000 (17:53 -0700)]
Merge git://git./linux/kernel/git/davem/net
Pull more networking fixes from David Miller:
1) Fix mlx4_en_netpoll implementation, it needs to schedule a NAPI
context, not synchronize it. From Chris Mason.
2) Ipv4 flow input interface should never be zero, it should be
LOOPBACK_IFINDEX instead. From Cong Wang and Julian Anastasov.
3) Properly configure MAC to PHY connection in mvneta devices, from
Thomas Petazzoni.
4) sys_recv should use SYSCALL_DEFINE. From Jan Glauber.
5) Tunnel driver ioctls do not use the correct namespace, fix from
Nicolas Dichtel.
6) Fix memory leak on seccomp filter attach, from Kees Cook.
7) Fix lockdep warning for nested vlans, from Ding Tianhong.
8) Crashes can happen in SCTP due to how the auth_enable value is
managed, fix from Vlad Yasevich.
9) Wireless fixes from John W Linville and co.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (45 commits)
net: sctp: cache auth_enable per endpoint
tg3: update rx_jumbo_pending ring param only when jumbo frames are enabled
vlan: Fix lockdep warning when vlan dev handle notification
seccomp: fix memory leak on filter attach
isdn: icn: buffer overflow in icn_command()
ip6_tunnel: use the right netns in ioctl handler
sit: use the right netns in ioctl handler
ip_tunnel: use the right netns in ioctl handler
net: use SYSCALL_DEFINEx for sys_recv
net: mdio-gpio: Add support for separate MDI and MDO gpio pins
net: mdio-gpio: Add support for active low gpio pins
net: mdio-gpio: Use devm_ functions where possible
ipv4, route: pass 0 instead of LOOPBACK_IFINDEX to fib_validate_source()
ipv4, fib: pass LOOPBACK_IFINDEX instead of 0 to flowi4_iif
mlx4_en: don't use napi_synchronize inside mlx4_en_netpoll
net: mvneta: properly configure the MAC <-> PHY connection in all situations
net: phy: add minimal support for QSGMII PHY
sfc:On MCDI timeout, issue an FLR (and mark MCDI to fail-fast)
mwifiex: fix hung task on command timeout
mwifiex: process event before command response
...
Linus Torvalds [Sat, 19 Apr 2014 00:52:39 +0000 (17:52 -0700)]
Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"A set of 5 small cifs fixes"
* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
cif: fix dead code
cifs: fix error handling cifs_user_readv
fs: cifs: remove unused variable.
Return correct error on query of xattr on file with empty xattrs
cifs: Wait for writebacks to complete before attempting write.
Jesse Brandeburg [Tue, 1 Apr 2014 09:07:20 +0000 (09:07 +0000)]
i40e: fix TCP flag replication for hardware offload
As reported by Eric Dumazet, the i40e driver was allowing the hardware
to replicate the PSH flag on all segments of a TSO operation.
This patch fixes the first/middle/last TCP flags settings which
makes the TSO operations work correctly.
With this change we are now configuring the CWR bit to only be set
in the first packet of a TSO, so this patch also enables TSO_ECN,
in order to advertise to the stack that we do the right thing
on the wire.
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Francois Romieu [Sun, 30 Mar 2014 03:14:48 +0000 (03:14 +0000)]
i40e: remove open-coded skb_cow_head
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Linus Torvalds [Sat, 19 Apr 2014 00:02:35 +0000 (17:02 -0700)]
Merge tag 'char-misc-3.15-rc2' of git://git./linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are a few driver fixes for char/misc drivers that resolve
reported issues.
All have been in linux-next successfully for a few days"
* tag 'char-misc-3.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
Drivers: hv: vmbus: Negotiate version 3.0 when running on ws2012r2 hosts
Tools: hv: Handle the case when the target file exists correctly
vme_tsi148: Utilize to_pci_dev() macro
vme_tsi148: Fix PCI address mapping assumption
vme_tsi148: Fix typo in tsi148_slave_get()
w1: avoid recursive device_add
w1: fix netlink refcnt leak on error path
misc: Grammar s/addition/additional/
drivers: mcb: fix memory leak in chameleon_parse_cells() error path
mei: ignore client writing state during cb completion
mei: me: do not load the driver if the FW doesn't support MEI interface
GenWQE: Increase driver version number
GenWQE: Fix multithreading problems
GenWQE: Ensure rc is not returning an uninitialized value
GenWQE: Add wmb before DDCB is started
GenWQE: Enable access to VPD flash area
Linus Torvalds [Fri, 18 Apr 2014 23:59:52 +0000 (16:59 -0700)]
Merge tag 'driver-core-3.15-rc2' of git://git./linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are some driver core fixes for 3.15-rc2. Also in here are some
documentation updates, as well as an API removal that had to wait for
after -rc1 due to the cleanups coming into you from multiple developer
trees (this one and the PPC tree.)
All have been in linux next successfully"
* tag 'driver-core-3.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
drivers/base/dd.c incorrect pr_debug() parameters
Documentation: Update stable address in Chinese and Japanese translations
topology: Fix compilation warning when not in SMP
Chinese: add translation of io_ordering.txt
stable_kernel_rules: spelling/word usage
sysfs, driver-core: remove unused {sysfs|device}_schedule_callback_owner()
kernfs: protect lazy kernfs_iattrs allocation with mutex
fs: Don't return 0 from get_anon_bdev
Linus Torvalds [Fri, 18 Apr 2014 23:58:47 +0000 (16:58 -0700)]
Merge tag 'staging-3.15-rc2' of git://git./linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are a few staging driver fixes for issues that have been reported
for 3.15-rc2.
Also dominating the diffstat for the pull request is the removal of
the rtl8187se driver. It's no longer needed in staging as a "real"
driver for this hardware is now merged in the tree in the "correct"
location in drivers/net/
All of these patches have been tested in linux-next"
* tag 'staging-3.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: r8188eu: Fix case where ethtype was never obtained and always be checked against 0
staging: r8712u: Fix case where ethtype was never obtained and always be checked against 0
staging: r8188eu: Calling rtw_get_stainfo() with a NULL sta_addr will return NULL
staging: comedi: fix circular locking dependency in comedi_mmap()
staging: r8723au: Add missing initialization of change_inx in sort algorithm
Staging: unisys: use after free in list_for_each()
staging: unisys: use after free in error messages
staging: speakup: fix misuse of kstrtol() in handle_goto()
staging: goldfish: Call free_irq in error path
staging: delete rtl8187se wireless driver
staging: rtl8723au: Fix buffer overflow in rtw_get_wfd_ie()
staging: gs_fpgaboot: remove __TIMESTAMP__ macro
staging: vme: fix memory leak in vme_user_probe()
staging: fpgaboot: clean up Makefile
staging/usbip: fix store_attach() sscanf return value check
staging/usbip: userspace - fix usbipd SIGSEGV from refresh_exported_devices()
staging: rtl8188eu: remove spaces, correct counts to unbreak P2P ioctls
staging/rtl8821ae: Fix OOM handling in _rtl_init_deferred_work()
Linus Torvalds [Fri, 18 Apr 2014 23:57:53 +0000 (16:57 -0700)]
Merge tag 'tty-3.15-rc2' of git://git./linux/kernel/git/gregkh/tty
Pull tty/serial driver fixes from Greg KH:
"Here are a number of small tty/serial driver fixes for 3.15-rc2. Also
in here are some Documentation file removals for drivers that we
removed a long time ago, no need to keep it around any longer.
All of these have been in linux-next for a bit"
* tag 'tty-3.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
Revert "serial: 8250, disable "too much work" messages"
serial: amba-pl011: fix regression, causing an Oops on rmmod
tty: Fix help text of SYNCLINK_CS
tty: fix memleak in alloc_pid
ttyprintk: Allow built as a module
ttyprintk: Fix wrong tty_unregister_driver() call in the error path
serial: 8250, disable "too much work" messages
Documentation/serial: Delete obsolete driver documentation
serial: omap: Fix missing pm_runtime_resume handling by simplifying code
serial_core: Fix pm imbalance on unbind
serial: pl011: change Rx burst size to half of trigger level
serial: timberdale: Depend on X86_32
serial: st-asc: Fix SysRq char handling
Revert "serial: clps711x: Give a chance to perform useful tasks during wait loop"
serial_core: Fix conditional start_tx on ring buffer not empty
serial: efm32: use $vendor,$device scheme for compatible string
serial: omap: free the wakeup settings in remove
Linus Torvalds [Fri, 18 Apr 2014 23:57:00 +0000 (16:57 -0700)]
Merge tag 'usb-3.15-rc2' of git://git./linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are a number of tiny USB fixes and new device ids for 3.15-rc2.
Nothing major, just issues some people have reported.
All of these have been in linux-next"
* tag 'usb-3.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
uas: fix deadlocky memory allocations
uas: fix error handling during scsi_scan()
uas: fix GFP_NOIO under spinlock
uwb: adds missing error handling
USB: cdc-acm: Remove Motorola/Telit H24 serial interfaces from ACM driver
USB: ohci-jz4740: FEAT_POWER is a port feature, not a hub feature
USB: ohci-jz4740: Fix uninitialized variable warning
USB: EHCI: tegra: set txfill_tuning
usb: ehci-platform: Return immediately from suspend if ehci_suspend fails
usb: ehci-exynos: Return immediately from suspend if ehci_suspend fails
USB: fix crash during hotplug of PCI USB controller card
USB: cdc-acm: fix double usb_autopm_put_interface() in acm_port_activate()
usb: usb-common: fix typo for usb_state_string
USB: usb_wwan: fix handling of missing bulk endpoints
USB: pl2303: add ids for Hewlett-Packard HP POS pole displays
USB: cp210x: Add 8281 (Nanotec Plug & Drive)
usb: option driver, add support for Telit UE910v2
Revert "USB: serial: add usbid for dell wwan card to sierra.c"
USB: serial: ftdi_sio: add id for Brainboxes serial cards
Linus Torvalds [Fri, 18 Apr 2014 23:40:31 +0000 (16:40 -0700)]
Merge branch 'akpm' (incoming from Andrew)
Merge misc fixes from Andrew Morton:
"13 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
thp: close race between split and zap huge pages
mm: fix new kernel-doc warning in filemap.c
mm: fix CONFIG_DEBUG_VM_RB description
mm: use paravirt friendly ops for NUMA hinting ptes
mips: export flush_icache_range
mm/hugetlb.c: add cond_resched_lock() in return_unused_surplus_pages()
wait: explain the shadowing and type inconsistencies
Shiraz has moved
Documentation/vm/numa_memory_policy.txt: fix wrong document in numa_memory_policy.txt
powerpc/mm: fix ".__node_distance" undefined
kernel/watchdog.c:touch_softlockup_watchdog(): use raw_cpu_write()
init/Kconfig: move the trusted keyring config option to general setup
vmscan: reclaim_clean_pages_from_list() must use mod_zone_page_state()
Kirill A. Shutemov [Fri, 18 Apr 2014 22:07:25 +0000 (15:07 -0700)]
thp: close race between split and zap huge pages
Sasha Levin has reported two THP BUGs[1][2]. I believe both of them
have the same root cause. Let's look to them one by one.
The first bug[1] is "kernel BUG at mm/huge_memory.c:1829!". It's
BUG_ON(mapcount != page_mapcount(page)) in __split_huge_page(). From my
testing I see that page_mapcount() is higher than mapcount here.
I think it happens due to race between zap_huge_pmd() and
page_check_address_pmd(). page_check_address_pmd() misses PMD which is
under zap:
CPU0 CPU1
zap_huge_pmd()
pmdp_get_and_clear()
__split_huge_page()
anon_vma_interval_tree_foreach()
__split_huge_page_splitting()
page_check_address_pmd()
mm_find_pmd()
/*
* We check if PMD present without taking ptl: no
* serialization against zap_huge_pmd(). We miss this PMD,
* it's not accounted to 'mapcount' in __split_huge_page().
*/
pmd_present(pmd) == 0
BUG_ON(mapcount != page_mapcount(page)) // CRASH!!!
page_remove_rmap(page)
atomic_add_negative(-1, &page->_mapcount)
The second bug[2] is "kernel BUG at mm/huge_memory.c:1371!".
It's VM_BUG_ON_PAGE(!PageHead(page), page) in zap_huge_pmd().
This happens in similar way:
CPU0 CPU1
zap_huge_pmd()
pmdp_get_and_clear()
page_remove_rmap(page)
atomic_add_negative(-1, &page->_mapcount)
__split_huge_page()
anon_vma_interval_tree_foreach()
__split_huge_page_splitting()
page_check_address_pmd()
mm_find_pmd()
pmd_present(pmd) == 0 /* The same comment as above */
/*
* No crash this time since we already decremented page->_mapcount in
* zap_huge_pmd().
*/
BUG_ON(mapcount != page_mapcount(page))
/*
* We split the compound page here into small pages without
* serialization against zap_huge_pmd()
*/
__split_huge_page_refcount()
VM_BUG_ON_PAGE(!PageHead(page), page); // CRASH!!!
So my understanding the problem is pmd_present() check in mm_find_pmd()
without taking page table lock.
The bug was introduced by me commit with commit
117b0791ac42. Sorry for
that. :(
Let's open code mm_find_pmd() in page_check_address_pmd() and do the
check under page table lock.
Note that __page_check_address() does the same for PTE entires
if sync != 0.
I've stress tested split and zap code paths for 36+ hours by now and
don't see crashes with the patch applied. Before it took <20 min to
trigger the first bug and few hours for second one (if we ignore
first).
[1] https://lkml.kernel.org/g/<
53440991.9090001@oracle.com>
[2] https://lkml.kernel.org/g/<
5310C56C.60709@oracle.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Tested-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Bob Liu <lliubbo@gmail.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Michel Lespinasse <walken@google.com>
Cc: Dave Jones <davej@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: <stable@vger.kernel.org> [3.13+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Randy Dunlap [Fri, 18 Apr 2014 22:07:23 +0000 (15:07 -0700)]
mm: fix new kernel-doc warning in filemap.c
Fix new kernel-doc warning in mm/filemap.c:
Warning(mm/filemap.c:2600): Excess function parameter 'ppos' description in '__generic_file_aio_write'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Davidlohr Bueso [Fri, 18 Apr 2014 22:07:22 +0000 (15:07 -0700)]
mm: fix CONFIG_DEBUG_VM_RB description
This appears to be a copy/paste error. Update the description to
reflect extra rbtree debug and checks for the config option instead of
duplicating CONFIG_DEBUG_VM.
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com>
Cc: Aswin Chandramouleeswaran <aswin@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mel Gorman [Fri, 18 Apr 2014 22:07:21 +0000 (15:07 -0700)]
mm: use paravirt friendly ops for NUMA hinting ptes
David Vrabel identified a regression when using automatic NUMA balancing
under Xen whereby page table entries were getting corrupted due to the
use of native PTE operations. Quoting him
Xen PV guest page tables require that their entries use machine
addresses if the preset bit (_PAGE_PRESENT) is set, and (for
successful migration) non-present PTEs must use pseudo-physical
addresses. This is because on migration MFNs in present PTEs are
translated to PFNs (canonicalised) so they may be translated back
to the new MFN in the destination domain (uncanonicalised).
pte_mknonnuma(), pmd_mknonnuma(), pte_mknuma() and pmd_mknuma()
set and clear the _PAGE_PRESENT bit using pte_set_flags(),
pte_clear_flags(), etc.
In a Xen PV guest, these functions must translate MFNs to PFNs
when clearing _PAGE_PRESENT and translate PFNs to MFNs when setting
_PAGE_PRESENT.
His suggested fix converted p[te|md]_[set|clear]_flags to using
paravirt-friendly ops but this is overkill. He suggested an alternative
of using p[te|md]_modify in the NUMA page table operations but this is
does more work than necessary and would require looking up a VMA for
protections.
This patch modifies the NUMA page table operations to use paravirt
friendly operations to set/clear the flags of interest. Unfortunately
this will take a performance hit when updating the PTEs on
CONFIG_PARAVIRT but I do not see a way around it that does not break
Xen.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: David Vrabel <david.vrabel@citrix.com>
Tested-by: David Vrabel <david.vrabel@citrix.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Anvin <hpa@zytor.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Steven Noonan <steven@uplinklabs.net>
Cc: Rik van Riel <riel@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Kees Cook [Fri, 18 Apr 2014 22:07:19 +0000 (15:07 -0700)]
mips: export flush_icache_range
The lkdtm module performs tests against executable memory ranges, so it
needs to flush the icache for proper behaviors. Other architectures
already export this, so do the same for MIPS.
[akpm@linux-foundation.org: relocate export sites]
Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Sanjay Lal <sanjayl@kymasys.com>
Cc: John Crispin <blogic@openwrt.org>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mizuma, Masayoshi [Fri, 18 Apr 2014 22:07:18 +0000 (15:07 -0700)]
mm/hugetlb.c: add cond_resched_lock() in return_unused_surplus_pages()
soft lockup in freeing gigantic hugepage fixed in commit
55f67141a892 "mm:
hugetlb: fix softlockup when a large number of hugepages are freed." can
happen in return_unused_surplus_pages(), so let's fix it.
Signed-off-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Peter Zijlstra [Fri, 18 Apr 2014 22:07:17 +0000 (15:07 -0700)]
wait: explain the shadowing and type inconsistencies
Stick in a comment before someone else tries to fix the sparse warning
this generates.
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-o2ro6f3vkxklni0bc8f7m68s@git.kernel.org
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Viresh Kumar [Fri, 18 Apr 2014 22:07:16 +0000 (15:07 -0700)]
Shiraz has moved
shiraz.hashim@st.com email-id doesn't exist anymore as he has left the
company. Replace ST's id with shiraz.linux.kernel@gmail.com.
It also updates .mailmap file to fix address for 'git shortlog'.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Shiraz Hashim <shiraz.linux.kernel@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Tang Chen [Fri, 18 Apr 2014 22:07:15 +0000 (15:07 -0700)]
Documentation/vm/numa_memory_policy.txt: fix wrong document in numa_memory_policy.txt
In document numa_memory_policy.txt, the following examples for flag
MPOL_F_RELATIVE_NODES are incorrect.
For example, consider a task that is attached to a cpuset with
mems 2-5 that sets an Interleave policy over the same set with
MPOL_F_RELATIVE_NODES. If the cpuset's mems change to 3-7, the
interleave now occurs over nodes 3,5-6. If the cpuset's mems
then change to 0,2-3,5, then the interleave occurs over nodes
0,3,5.
According to the comment of the patch adding flag MPOL_F_RELATIVE_NODES,
the nodemasks the user specifies should be considered relative to the
current task's mems_allowed.
(https://lkml.org/lkml/2008/2/29/428)
And according to numa_memory_policy.txt, if the user's nodemask includes
nodes that are outside the range of the new set of allowed nodes, then
the remap wraps around to the beginning of the nodemask and, if not
already set, sets the node in the mempolicy nodemask.
So in the example, if the user specifies 2-5, for a task whose
mems_allowed is 3-7, the nodemasks should be remapped the third, fourth,
fifth, sixth node in mems_allowed. like the following:
mems_allowed: 3 4 5 6 7
relative index: 0 1 2 3 4
5
So the nodemasks should be remapped to 3,5-7, but not 3,5-6.
And for a task whose mems_allowed is 0,2-3,5, the nodemasks should be
remapped to 0,2-3,5, but not 0,3,5.
mems_allowed: 0 2 3 5
relative index: 0 1 2 3
4 5
Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mike Qiu [Fri, 18 Apr 2014 22:07:14 +0000 (15:07 -0700)]
powerpc/mm: fix ".__node_distance" undefined
CHK include/config/kernel.release
CHK include/generated/uapi/linux/version.h
CHK include/generated/utsrelease.h
...
Building modules, stage 2.
WARNING: 1 bad relocations
c0000000013d6a30 R_PPC64_ADDR64 uprobes_fetch_type_table
WRAP arch/powerpc/boot/zImage.pseries
WRAP arch/powerpc/boot/zImage.epapr
MODPOST 1849 modules
ERROR: ".__node_distance" [drivers/block/nvme.ko] undefined!
make[1]: *** [__modpost] Error 1
make: *** [modules] Error 2
make: *** Waiting for unfinished jobs....
The reason is symbol "__node_distance" not been exported in powerpc.
Signed-off-by: Mike Qiu <qiudayu@linux.vnet.ibm.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Jesse Larrew <jlarrew@linux.vnet.ibm.com>
Cc: Robert Jennings <rcj@linux.vnet.ibm.com>
Cc: Alistair Popple <alistair@popple.id.au>
Cc: Mike Qiu <qiudayu@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrew Morton [Fri, 18 Apr 2014 22:07:12 +0000 (15:07 -0700)]
kernel/watchdog.c:touch_softlockup_watchdog(): use raw_cpu_write()
Fix:
BUG: using __this_cpu_write() in preemptible [
00000000] code: systemd-udevd/497
caller is __this_cpu_preempt_check+0x13/0x20
CPU: 3 PID: 497 Comm: systemd-udevd Tainted: G W 3.15.0-rc1 #9
Hardware name: Hewlett-Packard HP EliteBook 8470p/179B, BIOS 68ICF Ver. F.02 04/27/2012
Call Trace:
check_preemption_disabled+0xe1/0xf0
__this_cpu_preempt_check+0x13/0x20
touch_nmi_watchdog+0x28/0x40
Reported-by: Luis Henriques <luis.henriques@canonical.com>
Tested-by: Luis Henriques <luis.henriques@canonical.com>
Cc: Eric Piel <eric.piel@tremplin-utc.net>
Cc: Robert Moore <robert.moore@intel.com>
Cc: Lv Zheng <lv.zheng@intel.com>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Peter Foley [Fri, 18 Apr 2014 22:07:11 +0000 (15:07 -0700)]
init/Kconfig: move the trusted keyring config option to general setup
The SYSTEM_TRUSTED_KEYRING config option is not in any menu, causing it
to show up in the toplevel of the kernel configuration. Fix this by
moving it under the General Setup menu.
Signed-off-by: Peter Foley <pefoley2@pefoley.com>
Cc: David Howells <dhowells@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Christoph Lameter [Fri, 18 Apr 2014 22:07:10 +0000 (15:07 -0700)]
vmscan: reclaim_clean_pages_from_list() must use mod_zone_page_state()
Seems to be called with preemption enabled. Therefore it must use
mod_zone_page_state instead.
Signed-off-by: Christoph Lameter <cl@linux.com>
Reported-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vlad Yasevich [Thu, 17 Apr 2014 15:26:50 +0000 (17:26 +0200)]
net: sctp: cache auth_enable per endpoint
Currently, it is possible to create an SCTP socket, then switch
auth_enable via sysctl setting to 1 and crash the system on connect:
Oops[#1]:
CPU: 0 PID: 0 Comm: swapper Not tainted 3.14.1-mipsgit-
20140415 #1
task:
ffffffff8056ce80 ti:
ffffffff8055c000 task.ti:
ffffffff8055c000
[...]
Call Trace:
[<
ffffffff8043c4e8>] sctp_auth_asoc_set_default_hmac+0x68/0x80
[<
ffffffff8042b300>] sctp_process_init+0x5e0/0x8a4
[<
ffffffff8042188c>] sctp_sf_do_5_1B_init+0x234/0x34c
[<
ffffffff804228c8>] sctp_do_sm+0xb4/0x1e8
[<
ffffffff80425a08>] sctp_endpoint_bh_rcv+0x1c4/0x214
[<
ffffffff8043af68>] sctp_rcv+0x588/0x630
[<
ffffffff8043e8e8>] sctp6_rcv+0x10/0x24
[<
ffffffff803acb50>] ip6_input+0x2c0/0x440
[<
ffffffff8030fc00>] __netif_receive_skb_core+0x4a8/0x564
[<
ffffffff80310650>] process_backlog+0xb4/0x18c
[<
ffffffff80313cbc>] net_rx_action+0x12c/0x210
[<
ffffffff80034254>] __do_softirq+0x17c/0x2ac
[<
ffffffff800345e0>] irq_exit+0x54/0xb0
[<
ffffffff800075a4>] ret_from_irq+0x0/0x4
[<
ffffffff800090ec>] rm7k_wait_irqoff+0x24/0x48
[<
ffffffff8005e388>] cpu_startup_entry+0xc0/0x148
[<
ffffffff805a88b0>] start_kernel+0x37c/0x398
Code:
dd0900b8 000330f8 0126302d <
dcc60000>
50c0fff1 0047182a a48306a0
03e00008 00000000
---[ end trace
b530b0551467f2fd ]---
Kernel panic - not syncing: Fatal exception in interrupt
What happens while auth_enable=0 in that case is, that
ep->auth_hmacs is initialized to NULL in sctp_auth_init_hmacs()
when endpoint is being created.
After that point, if an admin switches over to auth_enable=1,
the machine can crash due to NULL pointer dereference during
reception of an INIT chunk. When we enter sctp_process_init()
via sctp_sf_do_5_1B_init() in order to respond to an INIT chunk,
the INIT verification succeeds and while we walk and process
all INIT params via sctp_process_param() we find that
net->sctp.auth_enable is set, therefore do not fall through,
but invoke sctp_auth_asoc_set_default_hmac() instead, and thus,
dereference what we have set to NULL during endpoint
initialization phase.
The fix is to make auth_enable immutable by caching its value
during endpoint initialization, so that its original value is
being carried along until destruction. The bug seems to originate
from the very first days.
Fix in joint work with Daniel Borkmann.
Reported-by: Joshua Kinard <kumba@gentoo.org>
Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Tested-by: Joshua Kinard <kumba@gentoo.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 18 Apr 2014 22:29:44 +0000 (18:29 -0400)]
Merge branch 'for-davem' of git://git./linux/kernel/git/linville/wireless
John W. Linville says:
====================
pull request: wireless 2014-04-17
Please pull this batch of fixes intended for the 3.15 stream...
For the mac80211 bits, Johannes says:
"We have a fix from Chun-Yeow to not look at management frame bitrates
that are typically really low, two fixes from Felix for AP_VLAN
interfaces, a fix from Ido to disable SMPS settings when a monitor
interface is enabled, a radar detection fix from Michał and a fix from
myself for a very old remain-on-channel bug."
For the iwlwifi bits, Emmanuel says:
"I have new device IDs and a new firmware API. These are the trivial
ones. The less trivial ones are Johannes's fix that delays the
enablement of an interrupt coalescing hardware until after association
- this fixes a few connection problems seen in the field. Eyal has a
bunch of rate control fixes. I decided to add these for 3.15 because
they fix some disconnection and packet loss scenarios which were
reported by the field. I also have a fix for a memory leak that
happens only with a very new NIC."
Along with those...
Amitkumar Karwar fixes a couple of problems relating to driver/firmware
interactions in mwifiex.
Christian Engelmayer avoids a couple of potential memory leaks in
the new rsi driver.
Eliad Peller provides a wl18xx mailbox alignment fix for problems
when using new firmware.
Frederic Danis adds a couple of missing debugging strings to the
cw1200 driver.
Geert Uytterhoeven adds a variable initialization inside of the
rsi driver.
Luciano Coelho patches the wlcore code to ignore dummy packet events
in PLT mode in order to work around a firmware bug.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Ivan Vecera [Thu, 17 Apr 2014 12:51:08 +0000 (14:51 +0200)]
tg3: update rx_jumbo_pending ring param only when jumbo frames are enabled
The patch fixes a problem with dropped jumbo frames after usage of
'ethtool -G ... rx'.
Scenario:
1. ip link set eth0 up
2. ethtool -G eth0 rx N # <- This zeroes rx-jumbo
3. ip link set mtu 9000 dev eth0
The ethtool command set rx_jumbo_pending to zero so any received jumbo
packets are dropped and you need to use 'ethtool -G eth0 rx-jumbo N'
to workaround the issue.
The patch changes the logic so rx_jumbo_pending value is changed only if
jumbo frames are enabled (MTU > 1500).
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Acked-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
dingtianhong [Thu, 17 Apr 2014 10:40:36 +0000 (18:40 +0800)]
vlan: Fix lockdep warning when vlan dev handle notification
When I open the LOCKDEP config and run these steps:
modprobe 8021q
vconfig add eth2 20
vconfig add eth2.20 30
ifconfig eth2 xx.xx.xx.xx
then the Call Trace happened:
[32524.386288] =============================================
[32524.386293] [ INFO: possible recursive locking detected ]
[32524.386298] 3.14.0-rc2-0.7-default+ #35 Tainted: G O
[32524.386302] ---------------------------------------------
[32524.386306] ifconfig/3103 is trying to acquire lock:
[32524.386310] (&vlan_netdev_addr_lock_key/1){+.....}, at: [<
ffffffff814275f4>] dev_mc_sync+0x64/0xb0
[32524.386326]
[32524.386326] but task is already holding lock:
[32524.386330] (&vlan_netdev_addr_lock_key/1){+.....}, at: [<
ffffffff8141af83>] dev_set_rx_mode+0x23/0x40
[32524.386341]
[32524.386341] other info that might help us debug this:
[32524.386345] Possible unsafe locking scenario:
[32524.386345]
[32524.386350] CPU0
[32524.386352] ----
[32524.386354] lock(&vlan_netdev_addr_lock_key/1);
[32524.386359] lock(&vlan_netdev_addr_lock_key/1);
[32524.386364]
[32524.386364] *** DEADLOCK ***
[32524.386364]
[32524.386368] May be due to missing lock nesting notation
[32524.386368]
[32524.386373] 2 locks held by ifconfig/3103:
[32524.386376] #0: (rtnl_mutex){+.+.+.}, at: [<
ffffffff81431d42>] rtnl_lock+0x12/0x20
[32524.386387] #1: (&vlan_netdev_addr_lock_key/1){+.....}, at: [<
ffffffff8141af83>] dev_set_rx_mode+0x23/0x40
[32524.386398]
[32524.386398] stack backtrace:
[32524.386403] CPU: 1 PID: 3103 Comm: ifconfig Tainted: G O 3.14.0-rc2-0.7-default+ #35
[32524.386409] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007
[32524.386414]
ffffffff81ffae40 ffff8800d9625ae8 ffffffff814f68a2 ffff8800d9625bc8
[32524.386421]
ffffffff810a35fb ffff8800d8a8d9d0 00000000d9625b28 ffff8800d8a8e5d0
[32524.386428]
000003cc00000000 0000000000000002 ffff8800d8a8e5f8 0000000000000000
[32524.386435] Call Trace:
[32524.386441] [<
ffffffff814f68a2>] dump_stack+0x6a/0x78
[32524.386448] [<
ffffffff810a35fb>] __lock_acquire+0x7ab/0x1940
[32524.386454] [<
ffffffff810a323a>] ? __lock_acquire+0x3ea/0x1940
[32524.386459] [<
ffffffff810a4874>] lock_acquire+0xe4/0x110
[32524.386464] [<
ffffffff814275f4>] ? dev_mc_sync+0x64/0xb0
[32524.386471] [<
ffffffff814fc07a>] _raw_spin_lock_nested+0x2a/0x40
[32524.386476] [<
ffffffff814275f4>] ? dev_mc_sync+0x64/0xb0
[32524.386481] [<
ffffffff814275f4>] dev_mc_sync+0x64/0xb0
[32524.386489] [<
ffffffffa0500cab>] vlan_dev_set_rx_mode+0x2b/0x50 [8021q]
[32524.386495] [<
ffffffff8141addf>] __dev_set_rx_mode+0x5f/0xb0
[32524.386500] [<
ffffffff8141af8b>] dev_set_rx_mode+0x2b/0x40
[32524.386506] [<
ffffffff8141b3cf>] __dev_open+0xef/0x150
[32524.386511] [<
ffffffff8141b177>] __dev_change_flags+0xa7/0x190
[32524.386516] [<
ffffffff8141b292>] dev_change_flags+0x32/0x80
[32524.386524] [<
ffffffff8149ca56>] devinet_ioctl+0x7d6/0x830
[32524.386532] [<
ffffffff81437b0b>] ? dev_ioctl+0x34b/0x660
[32524.386540] [<
ffffffff814a05b0>] inet_ioctl+0x80/0xa0
[32524.386550] [<
ffffffff8140199d>] sock_do_ioctl+0x2d/0x60
[32524.386558] [<
ffffffff81401a52>] sock_ioctl+0x82/0x2a0
[32524.386568] [<
ffffffff811a7123>] do_vfs_ioctl+0x93/0x590
[32524.386578] [<
ffffffff811b2705>] ? rcu_read_lock_held+0x45/0x50
[32524.386586] [<
ffffffff811b39e5>] ? __fget_light+0x105/0x110
[32524.386594] [<
ffffffff811a76b1>] SyS_ioctl+0x91/0xb0
[32524.386604] [<
ffffffff815057e2>] system_call_fastpath+0x16/0x1b
========================================================================
The reason is that all of the addr_lock_key for vlan dev have the same class,
so if we change the status for vlan dev, the vlan dev and its real dev will
hold the same class of addr_lock_key together, so the warning happened.
we should distinguish the lock depth for vlan dev and its real dev.
v1->v2: Convert the vlan_netdev_addr_lock_key to an array of eight elements, which
could support to add 8 vlan id on a same vlan dev, I think it is enough for current
scene, because a netdev's name is limited to IFNAMSIZ which could not hold 8 vlan id,
and the vlan dev would not meet the same class key with its real dev.
The new function vlan_dev_get_lockdep_subkey() will return the subkey and make the vlan
dev could get a suitable class key.
v2->v3: According David's suggestion, I use the subclass to distinguish the lock key for vlan dev
and its real dev, but it make no sense, because the difference for subclass in the
lock_class_key doesn't mean that the difference class for lock_key, so I use lock_depth
to distinguish the different depth for every vlan dev, the same depth of the vlan dev
could have the same lock_class_key, I import the MAX_LOCK_DEPTH from the include/linux/sched.h,
I think it is enough here, the lockdep should never exceed that value.
v3->v4: Add a huge array of locking keys will waste static kernel memory and is not a appropriate method,
we could use _nested() variants to fix the problem, calculate the depth for every vlan dev,
and use the depth as the subclass for addr_lock_key.
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 18 Apr 2014 20:49:42 +0000 (13:49 -0700)]
Merge tag 'rdma-for-linus' of git://git./linux/kernel/git/roland/infiniband
Pull infiniband/rdma updates from Roland Dreier:
- mostly cxgb4 fixes unblocked by the merge of some prerequisites via
the net tree
- drop deprecated MSI-X API use.
- a couple other miscellaneous things.
* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
RDMA/cxgb4: Fix over-dereference when terminating
RDMA/cxgb4: Use uninitialized_var()
RDMA/cxgb4: Add missing debug stats
RDMA/cxgb4: Initialize reserved fields in a FW work request
RDMA/cxgb4: Use pr_warn_ratelimited
RDMA/cxgb4: Max fastreg depth depends on DSGL support
RDMA/cxgb4: SQ flush fix
RDMA/cxgb4: rmb() after reading valid gen bit
RDMA/cxgb4: Endpoint timeout fixes
RDMA/cxgb4: Use the BAR2/WC path for kernel QPs and T5 devices
IB/mlx5: Add block multicast loopback support
IB/mthca: Use pci_enable_msix_exact() instead of pci_enable_msix()
IB/qib: Use pci_enable_msix_range() instead of pci_enable_msix()
Vineet Gupta [Fri, 18 Apr 2014 08:08:34 +0000 (13:38 +0530)]
ARC: Delete stale barrier.h
Commit
93ea02bb8435 ("arch: Clean up asm/barrier.h implementations")
wired generic barrier.h for ARC, but failed to delete the existing file.
In 3.15, due to rcupdate.h updates, this causes a build breakage on ARC:
CC arch/arc/kernel/asm-offsets.s
In file included from include/linux/sched.h:45:0,
from arch/arc/kernel/asm-offsets.c:9:
include/linux/rculist.h: In function __list_add_rcu:
include/linux/rculist.h:54:2: error: implicit declaration of function smp_store_release [-Werror=implicit-function-declaration]
rcu_assign_pointer(list_next_rcu(prev), new);
^
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 18 Apr 2014 17:56:27 +0000 (10:56 -0700)]
Merge tag 'pci-v3.15-fixes-1' of git://git./linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"These are fixes for a powerpc NULL pointer dereference, an OF
interrupt mapping issue on some of the new host bridges, and a
DesignWare iATU issue.
Host bridge drivers
- Fix OF interrupt mapping for DesignWare, R-Car, Tegra (Lucas Stach)
- Fix DesignWare iATU programming (Mohit Kumar)
Miscellaneous
- Fix powerpc NULL dereference from list_for_each_entry() update (Mike Qiu)"
* tag 'pci-v3.15-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: tegra: Use new OF interrupt mapping when possible
PCI: rcar: Use new OF interrupt mapping when possible
PCI: designware: Use new OF interrupt mapping when possible
PCI: designware: Fix iATU programming for cfg1, io and mem viewport
PCI: designware: Fix comment for setting number of lanes
powerpc/PCI: Fix NULL dereference in sys_pciconfig_iobase() list traversal
Linus Torvalds [Fri, 18 Apr 2014 17:31:34 +0000 (10:31 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid
Pull HID fixes from Jiri Kosina:
- fix for merge window mismerge in hid-sony, from Frank Praznik
- fix for Surface Type/Touch Cover 2 device, from Benjamin Tissoires
- quirk for ThinkPad Helix sensor hub from Stephen Chandler Paul
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: core: do not scan constant input report
Revert "HID: microsoft: Add ID's for Surface Type/Touch Cover 2"
HID: sensor-hub: add sensor hub quirk for ThinkPad Helix
HID: sony: Fix cancel_work_sync mismerge
Linus Torvalds [Fri, 18 Apr 2014 17:28:27 +0000 (10:28 -0700)]
Merge tag 'sound-3.15-rc2' of git://git./linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Just a copule of HD-audio device/codec-specific quirks, and a trivial
replacement of udelay() with mdelay() in the old es18xx driver code.
All should be safe to apply"
* tag 'sound-3.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda/realtek - Add headset Mic support for Dell machine
ALSA: hda - add headset mic detect quirk for a Dell laptop
ALSA: es18xx driver should use udelay error
ALSA: hda/realtek - Add support of ALC288 codec
Linus Torvalds [Fri, 18 Apr 2014 17:19:01 +0000 (10:19 -0700)]
Merge tag 'dt-fixes-for-3.15' of git://git./linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:
- fix error handling in of_update_property
- fix section mismatch warnings in __reserved_mem_check_root
- add empty of_find_node_by_path for !OF builds
- add various missing binding documentation
* tag 'dt-fixes-for-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
of: add empty of_find_node_by_path() for !OF
of: Clean up of_update_property
DT: add vendor prefix for EBV Elektronik
of: Fix the section mismatch warnings.
of: Add vendor prefix for Digi International Inc.
DT: I2C: Add trivial bindings used by kirkwood boards
DT: Vendor: Add prefixes used by Kirkwood devices
DT: bindings: add missing Marvell Kirkwood SoC documentation
dt-bindings: add vendor-prefix for Newhaven Display
of: add vendor prefix for I2SE GmbH
of: add vendor prefix for ISEE 2007 S.L.
Linus Torvalds [Fri, 18 Apr 2014 17:17:37 +0000 (10:17 -0700)]
Merge tag 'xfs-for-linus-3.15-rc2' of git://oss.sgi.com/xfs/xfs
Pull xfs bug fixes from Dave Chinner:
"The fixes are for data corruption issues, memory corruption and
regressions for changes merged in -rc1.
Data corruption fixes:
- fix a bunch of delayed allocation state mismatches
- fix collapse/zero range bugs
- fix a direct IO block mapping bug @ EOF
Other fixes:
- fix a use after free on metadata IO error
- fix a use after free on IO error during unmount
- fix an incorrect error sign on direct IO write errors
- add missing O_TMPFILE inode security context initialisation"
* tag 'xfs-for-linus-3.15-rc2' of git://oss.sgi.com/xfs/xfs:
xfs: fix tmpfile/selinux deadlock and initialize security
xfs: fix buffer use after free on IO error
xfs: wrong error sign conversion during failed DIO writes
xfs: unmount does not wait for shutdown during unmount
xfs: collapse range is delalloc challenged
xfs: don't map ranges that span EOF for direct IO
xfs: zeroing space needs to punch delalloc blocks
xfs: xfs_vm_write_end truncates too much on failure
xfs: write failure beyond EOF truncates too much data
xfs: kill buffers over failed write ranges properly
Linus Torvalds [Fri, 18 Apr 2014 17:16:43 +0000 (10:16 -0700)]
Merge tag 'trace-fixes-v3.15-rc1' of git://git./linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"This contains two fixes.
The first is to remove a duplication of creating debugfs files that
already exist and causes an error report to be printed due to the
failure of the second creation.
The second is a memory leak fix that was introduced in 3.14"
* tag 'trace-fixes-v3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing/uprobes: Fix uprobe_cpu_buffer memory leak
tracing: Do not try to recreated toplevel set_ftrace_* files
Alexander Shiyan [Wed, 16 Apr 2014 06:49:20 +0000 (10:49 +0400)]
of: add empty of_find_node_by_path() for !OF
Add an empty version of of_find_node_by_path().
This fixes following build error for asoc tree:
sound/soc/fsl/fsl_ssi.c: In function 'fsl_ssi_probe':
sound/soc/fsl/fsl_ssi.c:1471:2: error: implicit declaration of function 'of_find_node_by_path' [-Werror=implicit-function-declaration]
sprop = of_get_property(of_find_node_by_path("/"), "compatible", NULL);
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Rob Herring <robh@kernel.org>
Venkatesh Srinivas [Thu, 13 Mar 2014 19:36:26 +0000 (12:36 -0700)]
perf/x86/intel: Use rdmsrl_safe() when initializing RAPL PMU
CPUs which should support the RAPL counters according to
Family/Model/Stepping may still issue #GP when attempting to access
the RAPL MSRs. This may happen when Linux is running under KVM and
we are passing-through host F/M/S data, for example. Use rdmsrl_safe
to first access the RAPL_POWER_UNIT MSR; if this fails, do not
attempt to use this PMU.
Signed-off-by: Venkatesh Srinivas <venkateshs@google.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1394739386-22260-1-git-send-email-venkateshs@google.com
Cc: zheng.z.yan@intel.com
Cc: eranian@google.com
Cc: ak@linux.intel.com
Cc: linux-kernel@vger.kernel.org
[ The patch also silently fixes another bug: rapl_pmu_init() didn't handle the memory alloc failure case previously. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Gerd Hoffmann [Mon, 14 Apr 2014 09:34:50 +0000 (11:34 +0200)]
drm: bochs: drop unused struct fields
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Gerd Hoffmann [Mon, 14 Apr 2014 09:34:49 +0000 (11:34 +0200)]
drm: bochs: add power management support
bochs kms driver lacks power management support, thus
the vga display doesn't work any more after S3 resume.
Fix this by adding suspend and resume functions.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>