The critical section protected by usbhid->lock in hid_ctrl() is too
big and because of this it causes a recursive deadlock. "Too big" means
the case statement and the call to hid_input_report() do not need to be
protected by the spinlock (no URB operations are done inside them).
The deadlock happens because in certain rare cases drivers try to grab
the lock while handling the ctrl irq which grabs the lock before them
as described above. For example newer wacom tablets like 056a:033c try
to reschedule proximity reads from wacom_intuos_schedule_prox_event()
calling hid_hw_request() -> usbhid_request() -> usbhid_submit_report()
which tries to grab the usbhid lock already held by hid_ctrl().
There are two ways to get out of this deadlock:
1. Make the drivers work "around" the ctrl critical region, in the
wacom case for ex. by delaying the scheduling of the proximity read
request itself to a workqueue.
2. Shrink the critical region so the usbhid lock protects only the
instructions which modify usbhid state, calling hid_input_report()
with the spinlock unlocked, allowing the device driver to grab the
lock first, finish and then grab the lock afterwards in hid_ctrl().
Rasmus Villemoes [Tue, 24 Nov 2015 12:33:47 +0000 (13:33 +0100)]
HID: debug: improve hid_debug_event()
The code in hid_debug_event() causes horrible code generation. First,
we do a strlen() call for every byte we copy (we're doing a store to
global memory, so gcc has no way of proving that strlen(buf) doesn't
change). Second, since both i, list->tail and HID_DEBUG_BUFSIZE have
signed type, the modulo computation has to take into account the
possibility that list->tail+i is negative, so it's not just a simple
and.
Fix the former by simply not doing strlen() at all (we have to load
buf[i] anyway, so testing it is almost free) and the latter by
changing i to unsigned. This cuts 29% (69 bytes) of the size of the
function.
Allen Hung [Fri, 20 Nov 2015 10:21:06 +0000 (18:21 +0800)]
HID: multitouch: enable palm rejection if device implements confidence usage
The usage Confidence is mandary to Windows Precision Touchpad devices. The
appearance of this usage is checked in hidinput_connect but the quirk
MT_QUIRK_VALID_IS_CONFIDENCE is not applied to device accordingly.
Apply this quirk and also remove quirk MT_QUIRK_ALWAYS_VALID to enable palm
rejection for the WIN 8 touchpad devices which have implemented usage
Confidence in its input reports.
Tested on Dell XPS 13 laptop.
Signed-off-by: Allen Hung <allen_hung@dell.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Simon Wood [Thu, 19 Nov 2015 23:42:12 +0000 (16:42 -0700)]
HID: hid-logitech-hidpp: Add basic support for Logitech G920
This patch adds basic support for the Logitech G920 wheel when in HID
mode. This wheel 'speaks' the HID++ protocol, and therefor is driven
with hid-logitech-hidpp.
At this stage the driver only shows that it can communicate with the
wheel by outputting the name discovered over HID++.
The normal HID functions work to give input functionality using
joystick/event interface.
Note: in 'hidpp_probe()' we have to start the hardware to get packets
flowing, the same might apply in future for other devices which don't
use the unifying protocol.
Signed-off-by: Simon Wood <simon@mungewell.org> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Jiri Kosina [Fri, 20 Nov 2015 09:28:40 +0000 (10:28 +0100)]
Merge branch 'for-dmitry/logitech-g920-merge-base' into for-4.5/logitech
Pull the branch that has been established to be jointly merged to both hid.git
and input.git, because both trees have different depending patches on top.
Simon Wood [Thu, 19 Nov 2015 23:42:10 +0000 (16:42 -0700)]
INPUT: xpad: switch Logitech G920 Wheel into HID mode
When plugged in the Logitech G920 wheel starts with USBID 046d:c261
and behaviors as a vendor specific class. If a 'magic' byte sequence
is sent the wheel will detach and reconnect as a HID device with the
USBID 046d:c262.
Signed-off-by: Simon Wood <simon@mungewell.org> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Andy Lutomirski [Thu, 19 Nov 2015 16:19:31 +0000 (08:19 -0800)]
HID: Make report_descriptor available for all devices
Currently the sysfs report_descriptor attribute is only available if the device
is claimed. We have the descriptor before we even create the device node, so
just instantiate report_descriptor statically.
Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Linus Torvalds [Thu, 19 Nov 2015 20:10:51 +0000 (12:10 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Pull HID fixes from Jiri Kosina:
"Two functional fixes for wacom HID driver from Ping Cheng and Jiri
Kosina"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: wacom: fixup quirks setup for WACOM_DEVICETYPE_PAD
HID: wacom: Add outbounding area for DTU1141
Linus Torvalds [Thu, 19 Nov 2015 19:33:58 +0000 (11:33 -0800)]
Merge tag 'mmc-v4.4-rc1' of git://git.linaro.org/people/ulf.hansson/mmc
Pull MMC fixes from Ulf Hansson:
"Here are some mmc fixes intended for v4.4 rc2. It's based on a commit
prior rc1 as I wanted to get them a bit more tested in next before
sending you the pull request.
MMC core:
- Improve reliability when selecting HS200 mode
- Improve reliability when selecting HS400 mode
- mmc: remove bondage between REQ_META and reliable write
MMC host:
- pxamci: Fix read-only gpio detection polarity
- mtk-sd: Preinitialize delay_phase to fix the case when delay is zero
- android-goldfish: Fix build dependency by adding HAS_DMA
- dw_mmc: Remove Seungwon Jeon from MAINTAINERS"
* tag 'mmc-v4.4-rc1' of git://git.linaro.org/people/ulf.hansson/mmc:
mmc: remove bondage between REQ_META and reliable write
mmc: MMC_GOLDFISH should depend on HAS_DMA
mmc: mediatek: Preinitialize delay_phase in get_best_delay()
MAINTAINERS: mmc: Remove Seungwon Jeon from dw_mmc
mmc: mmc: Improve reliability of mmc_select_hs400()
mmc: mmc: Move mmc_switch_status()
mmc: mmc: Fix HS setting in mmc_select_hs400()
mmc: mmc: Improve reliability of mmc_select_hs200()
mmc: pxamci: fix read-only gpio detection polarity
Frank Praznik [Fri, 6 Nov 2015 20:35:53 +0000 (15:35 -0500)]
HID: sony: Remove the size check for the Dualshock 4 HID Descriptor
Sony has modified the HID descriptor in new revisions of the Dualshock 4 which
causes the size check in the descriptor replacement function to fail. Remove it
so that new revisions of the controller will work correctly.
The module is completely replacing the descriptor instead of patching it, so the
size check isn't really necessary anyways.
Signed-off-by: Frank Praznik <frank.praznik@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Frank Praznik [Wed, 11 Nov 2015 14:49:38 +0000 (09:49 -0500)]
HID: sony: Save and restore the controller state on suspend and resume
On hardware which provides standby power for charging devices the state of the
LEDs and force-feedback on controllers can persist even when the system is in
standby. Additionally, the state of the controllers on resume may be different
from the state they were in at the time when they were suspended (ie. LEDs are
cleared on resume).
This implements the suspend and resume callbacks which saves and clears the
state of the LEDs on suspend and restores them on resume. Force-feedback is
stopped on suspend but not automatically restored on resume until a new event is
received to avoid potentially damaging hardware.
USB Sixaxis and navigation controllers must be reinitialized when the hardware
is reset on resume or they won't send any input reports.
Signed-off-by: Frank Praznik <frank.praznik@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Frank Praznik [Wed, 11 Nov 2015 14:49:37 +0000 (09:49 -0500)]
HID: sony: Refactor the output report sending functions
Refactor the output report sending functions to allow for the sending of output
reports without enqueuing a work item. Output reports for any device can now be
sent via the send_output_report function pointer in the sony_sc struct which
points to the appropriate output function. The individual state worker
functions have been replaced with a universal sony_state_worker function which
uses this function pointer.
Signed-off-by: Frank Praznik <frank.praznik@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Linus Torvalds [Wed, 18 Nov 2015 16:59:29 +0000 (08:59 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
"Assorted bug fixes, the mlock2 system call gets added, and one
improvement. The boot from dasd devices is now possible from a wider
range of devices"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390: remove SALIPL loader
s390: wire up mlock2 system call
s390: remove g5 elf platform support
s390: avoid cache aliasing under z/VM and KVM
s390/sclp: _sclp_wait_int(): retain full PSW mask
s390/zcrypt: Fix initialisation when zcrypt is built-in
s390/zcrypt: Fix kernel crash on systems without AP bus support
s390: add support for ipl devices in subchannel sets > 0
s390/ipl: fix out of bounds access in scpdata_write
s390/pci_dma: improve debugging of errors during dma map
s390/pci_dma: handle dma table failures
s390/pci_dma: unify label of invalid translation table entries
s390/syscalls: remove system call number calculation
s390/cio: simplify css_generate_pgid
s390/diag: add a s390 prefix to the diagnose trace point
s390/head: fix error message on unsupported hardware
Linus Torvalds [Wed, 18 Nov 2015 16:43:29 +0000 (08:43 -0800)]
Merge tag 'hwmon-for-linus-v4.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
"Fix build issues in scpi and ina2xx drivers, update scpi driver to
support recent firmware, and fix an uninitialized variable warning in
applesmc driver"
1) Fix list tests in netfilter ingress support, from Florian Westphal.
2) Fix reversal of input and output interfaces in ingress hook
invocation, from Pablo Neira Ayuso.
3) We have a use after free in r8169, caught by Dave Jones, fixed by
Francois Romieu.
4) Splice use-after-free fix in AF_UNIX frmo Hannes Frederic Sowa.
5) Three ipv6 route handling bug fixes from Martin KaFai Lau:
a) Don't create clone routes not managed by the fib6 tree
b) Don't forget to check expiration of DST_NOCACHE routes.
c) Handle rt->dst.from == NULL properly.
6) Several AF_PACKET fixes wrt transport header setting and SKB
protocol setting, from Daniel Borkmann.
7) Fix thunder driver crash on shutdown, from Pavel Fedin.
8) Several Mellanox driver fixes (max MTU calculations, use of correct
DMA unmap in TX path, etc.) from Saeed Mahameed, Tariq Toukan, Doron
Tsur, Achiad Shochat, Eran Ben Elisha, and Noa Osherovich.
9) Several mv88e6060 DSA driver fixes (wrong bit definitions for
certain registers, etc.) from Neil Armstrong.
10) Make sure to disable preemption while updating per-cpu stats of ip
tunnels, from Jason A. Donenfeld.
11) Various ARM64 bpf JIT fixes, from Yang Shi.
12) Flush icache properly in ARM JITs, from Daniel Borkmann.
13) Fix masking of RX and TX interrupts in ravb driver, from Masaru
Nagai.
14) Fix netdev feature propagation for devices not implementing
->ndo_set_features(). From Nikolay Aleksandrov.
15) Big endian fix in vmxnet3 driver, from Shrikrishna Khare.
16) RAW socket code increments incorrect SNMP counters, fix from Ben
Cartwright-Cox.
17) IPv6 multicast SNMP counters are bumped twice, fix from Neil Horman.
18) Fix handling of VLAN headers on stacked devices when REORDER is
disabled. From Vlad Yasevich.
19) Fix SKB leaks and use-after-free in ipvlan and macvlan drivers, from
Sabrina Dubroca.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (83 commits)
MAINTAINERS: Update Mellanox's Eth NIC driver entries
net/core: revert "net: fix __netdev_update_features return.." and add comment
af_unix: take receive queue lock while appending new skb
rtnetlink: fix frame size warning in rtnl_fill_ifinfo
net: use skb_clone to avoid alloc_pages failure.
packet: Use PAGE_ALIGNED macro
packet: Don't check frames_per_block against negative values
net: phy: Use interrupts when available in NOLINK state
phy: marvell: Add support for 88E1540 PHY
arm64: bpf: make BPF prologue and epilogue align with ARM64 AAPCS
macvlan: fix leak in macvlan_handle_frame
ipvlan: fix use after free of skb
ipvlan: fix leak in ipvlan_rcv_frame
vlan: Do not put vlan headers back on bridge and macvlan ports
vlan: Fix untag operations of stacked vlans with REORDER_HEADER off
via-velocity: unconditionally drop frames with bad l2 length
ipg: Remove ipg driver
dl2k: Add support for IP1000A-based cards
snmp: Remove duplicate OUTMCAST stat increment
net: thunder: Check for driver data in nicvf_remove()
...
net/core: revert "net: fix __netdev_update_features return.." and add comment
This reverts commit 00ee59271777 ("net: fix __netdev_update_features return
on ndo_set_features failure")
and adds a comment explaining why it's okay to return a value other than
0 upon error. Some drivers might actually change flags and return an
error so it's better to fire a spurious notification rather than miss
these.
CC: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
af_unix: take receive queue lock while appending new skb
While possibly in future we don't necessarily need to use
sk_buff_head.lock this is a rather larger change, as it affects the
af_unix fd garbage collector, diag and socket cleanups. This is too much
for a stable patch.
For the time being grab sk_buff_head.lock without disabling bh and irqs,
so don't use locked skb_queue_tail.
Fixes: 869e7c62486e ("net: af_unix: implement stream sendpage support") Cc: Eric Dumazet <edumazet@google.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Reported-by: Eric Dumazet <edumazet@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
rtnetlink: fix frame size warning in rtnl_fill_ifinfo
Fix the following warning:
CC net/core/rtnetlink.o
net/core/rtnetlink.c: In function ‘rtnl_fill_ifinfo’:
net/core/rtnetlink.c:1308:1: warning: the frame size of 2864 bytes is larger than 2048 bytes [-Wframe-larger-than=]
}
^
by splitting up the huge rtnl_fill_ifinfo into some smaller ones, so we
don't have the huge frame allocations at the same time.
Cc: Eric Dumazet <edumazet@google.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Martin Zhang [Tue, 17 Nov 2015 12:49:30 +0000 (20:49 +0800)]
net: use skb_clone to avoid alloc_pages failure.
1. new skb only need dst and ip address(v4 or v6).
2. skb_copy may need high order pages, which is very rare on long running server.
Signed-off-by: Junwei Zhang <linggao.zjw@alibaba-inc.com> Signed-off-by: Martin Zhang <martinbj2008@gmail.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lunn [Mon, 16 Nov 2015 22:36:46 +0000 (23:36 +0100)]
net: phy: Use interrupts when available in NOLINK state
The NOLINK state will poll the phy once a second to see if the link
has come up. If the phy has an interrupt line, this polling can be
skipped, since the phy should interrupt when the link returns.
Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
The 88E1540 can be found embedded in the Marvell 88E6352 switch. It
is compatible with the 88E1510, so add support for it, using the 88E1510 specific functions.
Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Yang Shi [Mon, 16 Nov 2015 22:35:35 +0000 (14:35 -0800)]
arm64: bpf: make BPF prologue and epilogue align with ARM64 AAPCS
Save and restore FP/LR in BPF prog prologue and epilogue, save SP to FP
in prologue in order to get the correct stack backtrace.
However, ARM64 JIT used FP (x29) as eBPF fp register, FP is subjected to
change during function call so it may cause the BPF prog stack base address
change too.
Use x25 to replace FP as BPF stack base register (fp). Since x25 is callee
saved register, so it will keep intact during function call.
It is initialized in BPF prog prologue when BPF prog is started to run
everytime. Save and restore x25/x26 in BPF prologue and epilogue to keep
them intact for the outside of BPF. Actually, x26 is unnecessary, but SP
requires 16 bytes alignment.
CC: Zi Shen Lim <zlim.lnx@gmail.com> CC: Xi Wang <xi.wang@gmail.com> Signed-off-by: Yang Shi <yang.shi@linaro.org> Acked-by: Zi Shen Lim <zlim.lnx@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Mon, 16 Nov 2015 21:54:20 +0000 (22:54 +0100)]
macvlan: fix leak in macvlan_handle_frame
Reset pskb in macvlan_handle_frame in case skb_share_check returned a
clone.
Fixes: 8a4eb5734e8d ("net: introduce rx_handler results and logic around that") Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Mon, 16 Nov 2015 21:44:53 +0000 (22:44 +0100)]
ipvlan: fix use after free of skb
ipvlan_handle_frame is a rx_handler, and when it returns a value other
than RX_HANDLER_CONSUMED (here, NET_RX_DROP aka RX_HANDLER_ANOTHER),
__netif_receive_skb_core expects that the skb still exists and will
process it further, but we just freed it.
Fixes: 2ad7bf363841 ("ipvlan: Initial check-in of the IPVLAN driver.") Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Mon, 16 Nov 2015 21:34:26 +0000 (22:34 +0100)]
ipvlan: fix leak in ipvlan_rcv_frame
Pass a **skb to ipvlan_rcv_frame so that if skb_share_check returns a
new skb, we actually use it during further processing.
It's safe to ignore the new skb in the ipvlan_xmit_* functions, because
they call ipvlan_rcv_frame with local == true, so that dev_forward_skb
is called and always takes ownership of the skb.
Fixes: 2ad7bf363841 ("ipvlan: Initial check-in of the IPVLAN driver.") Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 17 Nov 2015 19:38:36 +0000 (14:38 -0500)]
Merge branch 'vlan-reorder'
Vladislav Yasevich says:
====================
Fix issues with vlans without REORDER_HEADER
A while ago Phil Sutter brought up an issue with vlans without
REORDER_HEADER and bridges. The problem was that if a vlan
without REORDER_HEADER was a port in the bridge, the bridge ended
up forwarding corrupted packets that still contained the vlan header.
The same issue exists for bridge mode macvlan/macvtap devices.
An additional issue with vlans without REORDER_HEADER is that stacking
them also doesn't work. The reason here is that skb_reorder_vlan_header()
function assumes that it on ETH_HLEN bytes deep into the packet. That
is not the case, when you a vlan without REORRDER_HEADER flag set.
This series attempts to correct these 2 issues.
1) To solve the stacked vlans problem, the patch simply use
skb->mac_len as an offset to start copying mac addresses that
is part of header reordering.
2) To fix the issue with bridge/macvlan/macvtap, the second patch
simply doesn't write the vlan header back to the packet if the
vlan device is either a bridge or a macvlan port. This ends up
being the simplest and least performance intrussive solution.
I've considered extending patch 2 to all stacked devices (essentially
checked for the presense of rx_handler), but that feels like a broader
restriction and _may_ break existing uses.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Mon, 16 Nov 2015 20:43:45 +0000 (15:43 -0500)]
vlan: Do not put vlan headers back on bridge and macvlan ports
When a vlan is configured with REORDER_HEADER set to 0, the vlan
header is put back into the packet and makes it appear that
the vlan header is still there even after it's been processed.
This posses a problem for bridge and macvlan ports. The packets
passed to those device may be forwarded and at the time of the
forward, vlan headers end up being unexpectedly present.
With the patch, we make sure that we do not put the vlan header
back (when REORDER_HEADER is 0) if a bridge or macvlan has
been configured on top of the vlan device.
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Vlad Yasevich [Mon, 16 Nov 2015 20:43:44 +0000 (15:43 -0500)]
vlan: Fix untag operations of stacked vlans with REORDER_HEADER off
When we have multiple stacked vlan devices all of which have
turned off REORDER_HEADER flag, the untag operation does not
locate the ethernet addresses correctly for nested vlans.
The reason is that in case of REORDER_HEADER flag being off,
the outer vlan headers are put back and the mac_len is adjusted
to account for the presense of the header. Then, the subsequent
untag operation, for the next level vlan, always use VLAN_ETH_HLEN
to locate the begining of the ethernet header and that ends up
being a multiple of 4 bytes short of the actuall beginning
of the mac header (the multiple depending on the how many vlan
encapsulations ethere are).
As a reslult, if there are multiple levles of vlan devices
with REODER_HEADER being off, the recevied packets end up
being dropped.
To solve this, we use skb->mac_len as the offset. The value
is always set on receive path and starts out as a ETH_HLEN.
The value is also updated when the vlan header manupations occur
so we know it will be correct.
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Timo Teräs [Mon, 16 Nov 2015 12:36:32 +0000 (14:36 +0200)]
via-velocity: unconditionally drop frames with bad l2 length
By default the driver allowed incorrect frames to be received. What is
worse the code does not handle very short frames correctly. The FCS
length is unconditionally subtracted, and the underflow can cause
skb_put to be called with large number after implicit cast to unsigned.
And indeed, an skb_over_panic() was observed with via-velocity.
This removes the module parameter as it does not work in it's
current state, and should be implemented via NETIF_F_RXALL if needed.
Suggested-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Timo Teräs <timo.teras@iki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Tue, 17 Nov 2015 18:11:08 +0000 (10:11 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro:
"A fs-cache regression fix, and adding a warning about obnoxiou^W
moderation of list given in MAINTAINERS"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
MAINTAINERS: linux-cachefs@redhat.com is moderated for non-subscribers
FS-Cache: Add missing initialization of ret in cachefiles_write_page()
FS-Cache: Add missing initialization of ret in cachefiles_write_page()
fs/cachefiles/rdwr.c: In function ‘cachefiles_write_page’:
fs/cachefiles/rdwr.c:882: warning: ‘ret’ may be used uninitialized in
this function
If the jump to label "error" is taken, "ret" will indeed be
uninitialized, and random stack data may be printed by the debug code.
Fixes: 102f4d900c9c8f5e ("FS-Cache: Handle a write to the page immediately beyond the EOF marker") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Ondrej Zary [Sun, 15 Nov 2015 21:36:11 +0000 (22:36 +0100)]
dl2k: Add support for IP1000A-based cards
Add support for IP1000A chips to dl2k driver.
IP1000A chip looks like a TC9020 with integrated PHY.
This allows IP1000A chips to work reliably because the ipg driver is
buggy - it loses packets under load and then completely stops
transmitting data.
Tested with Asus NX1101 v2.0 at 10, 100 and 1000Mbps:
vendor=0x13f0 device=0x1023 (rev 0x41)
subsystem vendor=0x1043 device=0x8180
MAC address registers access needed to be changed from 8-bit to 16-bit
because 8-bit does not work on IP1000A. 8-bit access is not even
allowed in the TC9020 datasheet (although it worked). 16-bit access
works on both.
Tested that it does not break D-Link DGE-550T (DL-2000 chip, probably
a rebranded TC9020):
vendor=0x1186 device=0x4000 (rev 0x0c)
subsystem vendor=0x1186 device=0x4000
Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Neil Horman [Mon, 16 Nov 2015 18:09:10 +0000 (13:09 -0500)]
snmp: Remove duplicate OUTMCAST stat increment
the OUTMCAST stat is double incremented, getting bumped once in the mcast code
itself, and again in the common ip output path. Remove the mcast bump, as its
not needed
Validated by the reporter, with good results
Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Reported-by: Claus Jensen <claus.jensen@microsemi.com> CC: Claus Jensen <claus.jensen@microsemi.com> CC: David Miller <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Pavel Fedin [Mon, 16 Nov 2015 14:51:34 +0000 (17:51 +0300)]
net: thunder: Check for driver data in nicvf_remove()
In some cases the crash is caused by nicvf_remove() being called from
outside. For example, if we try to feed the device to vfio after the
probe has failed for some reason. So, move the check to better place.
Signed-off-by: Pavel Fedin <p.fedin@samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
The ":" is supposed to be preceded by a driver name, but in this
case it is an empty string since the device has no parent.
There are many types of network devices without a parent. The
anonymous warnings for these devices can be hard to debug. Log
the network device name instead in these cases to assist further
debugging.
This is mostly similar to how __netdev_printk() handles orphan
devices.
Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
af_unix: don't append consumed skbs to sk_receive_queue
In case multiple writes to a unix stream socket race we could end up in a
situation where we pre-allocate a new skb for use in unix_stream_sendpage
but have to free it again in the locked section because another skb
has been appended meanwhile, which we must use. Accidentally we didn't
clear the pointer after consuming it and so we touched freed memory
while appending it to the sk_receive_queue. So, clear the pointer after
consuming the skb.
This bug has been found with syzkaller
(http://github.com/google/syzkaller) by Dmitry Vyukov.
Fixes: 869e7c62486e ("net: af_unix: implement stream sendpage support") Reported-by: Dmitry Vyukov <dvyukov@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Dragos Tatulea [Mon, 16 Nov 2015 09:52:48 +0000 (10:52 +0100)]
net: switchdev: fix return code of fdb_dump stub
rtnl_fdb_dump always expects an index to be returned by the ndo_fdb_dump op,
but when CONFIG_NET_SWITCHDEV is off, it returns an error.
Fix that by returning the given unmodified idx.
A similar fix was 0890cf6cb6ab ("switchdev: fix return value of
switchdev_port_fdb_dump in case of error") but for the CONFIG_NET_SWITCHDEV=y
case.
Fixes: 45d4122ca7cd ("switchdev: add support for fdb add/del/dump via switchdev_port_obj ops.") Signed-off-by: Dragos Tatulea <dragos@endocode.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Sun, 15 Nov 2015 13:02:16 +0000 (15:02 +0200)]
bnx2x: Fix VLANs null-pointer for 57710, 57711
Commit 05cc5a39ddb7 "bnx2x: add vlan filtering offload" introduced
a regression in regard for vlans for 57710, 57711 adapters -
Loading 8021q module on a machine with such an adapter would cause
a null pointer dereference, as the driver mistakenly publishes it
has capabilities for vlan CTAG filtering.
Reported-by: Otto Sabart <osabart@redhat.com> Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com> Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Masaru Nagai [Sun, 15 Nov 2015 12:34:42 +0000 (21:34 +0900)]
ravb: remove unhandle int cause
This driver does not handle the AVB-DMAC Receive FIFO Warning interrupt
now, so the interrupt should not be enabled.
Signed-off-by: Masaru Nagai <masaru.nagai.vx@renesas.com> Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
raw: increment correct SNMP counters for ICMP messages
Sending ICMP packets with raw sockets ends up in the SNMP counters
logging the type as the first byte of the IPv4 header rather than
the ICMP header. This is fixed by adding the IP Header Length to
the casting into a icmphdr struct.
Signed-off-by: Ben Cartwright-Cox <ben@benjojo.co.uk> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: fix __netdev_update_features return on ndo_set_features failure
If ndo_set_features fails __netdev_update_features() will return -1 but
this is wrong because it is expected to return 0 if no features were
changed (see netdev_update_features()), which will cause a netdev
notifier to be called without any actual changes. Fix this by returning
0 if ndo_set_features fails.
Fixes: 6cb6a27c45ce ("net: Call netdev_features_change() from netdev_update_features()") CC: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
net: fix feature changes on devices without ndo_set_features
When __netdev_update_features() was updated to ensure some features are
disabled on new lower devices, an error was introduced for devices which
don't have the ndo_set_features() method set. Before we'll just set the
new features, but now we return an error and don't set them. Fix this by
returning the old behaviour and setting err to 0 when ndo_set_features
is not present.
Fixes: e7868a85e1b2 ("net/core: ensure features get disabled on new lower devs") CC: Jarod Wilson <jarod@redhat.com> CC: Jiri Pirko <jiri@resnulli.us> CC: Ido Schimmel <idosch@mellanox.com> CC: Sander Eikelenboom <linux@eikelenboom.it> CC: Andy Gospodarek <gospo@cumulusnetworks.com> CC: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Reviewed-by: Andy Gospodarek <gospo@cumulusnetworks.com> Reviewed-by: Jarod Wilson <jarod@redhat.com> Tested-by: Florian Fainelli <f.fainelli@gmail.com> Tested-by: Dave Young <dyoung@redhat.com> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ivan Vecera [Fri, 13 Nov 2015 10:36:57 +0000 (11:36 +0100)]
be2net: remove unused local rsstable array
Remove rsstable array and its initialization from be_set_rss_hash_opts().
The array became unused after "e255787 be2net: Support for configurable
RSS hash key". The initial RSS table is now filled and stored for later
usage during Rx queue creation.
Signed-off-by: Ivan Vecera <ivecera@redhat.com> Acked-by: Sathya Perla <sathya.perla@avagotech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Masaru Nagai [Fri, 13 Nov 2015 10:24:49 +0000 (19:24 +0900)]
ravb: Fix int mask value overwritten issue
When RX/TX interrupt for Network Control queue and Best Effort queue
is issued at the same time, the interrupt mask of Network Control
queue will be reset when the mask of Best Effort queue is set.
This patch fixes this problem.
Signed-off-by: Masaru Nagai <masaru.nagai.vx@renesas.com> Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Pavel Fedin [Fri, 13 Nov 2015 06:46:59 +0000 (09:46 +0300)]
net: smsc911x: Reset PHY during initialization
On certain hardware after software reboot the chip may get stuck and fail
to reinitialize during reset. This can be fixed by ensuring that PHY is
reset too.
Old PHY resetting method required operational MDIO interface, therefore
the chip should have been already set up. In order to be able to function
during probe, it is changed to use PMT_CTRL register.
The problem could be observed on SMDK5410 board.
Signed-off-by: Pavel Fedin <p.fedin@samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Sat, 14 Nov 2015 00:16:18 +0000 (01:16 +0100)]
bpf, arm64: start flushing icache range from header
While recently going over ARM64's BPF code, I noticed that the icache
range we're flushing should start at header already and not at ctx.image.
Reason is that after b569c1c622c5 ("net: bpf: arm64: address randomize
and write protect JIT code"), we also want to make sure to flush the
random-sized trap in front of the start of the actual program (analogous
to x86). No operational differences from user side.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Zi Shen Lim <zlim.lnx@gmail.com> Cc: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Sat, 14 Nov 2015 00:26:53 +0000 (01:26 +0100)]
bpf, arm: start flushing icache range from header
During review I noticed that the icache range we're flushing should
start at header already and not at ctx.image.
Reason is that after 55309dd3d4cd ("net: bpf: arm: address randomize
and write protect JIT code"), we also want to make sure to flush the
random-sized trap in front of the start of the actual program (analogous
to x86). No operational differences from user side.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Tested-by: Nicolas Schichan <nschichan@freebox.fr> Cc: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Yang Shi [Thu, 12 Nov 2015 22:07:46 +0000 (14:07 -0800)]
bpf: samples: exclude asm/sysreg.h for arm64
commit 338d4f49d6f7114a017d294ccf7374df4f998edc
("arm64: kernel: Add support for Privileged Access Never") includes sysreg.h
into futex.h and uaccess.h. But, the inline assembly used by asm/sysreg.h is
incompatible with llvm so it will cause BPF samples build failure for ARM64.
Since sysreg.h is useless for BPF samples, just exclude it from Makefile via
defining __ASM_SYSREG_H.
Signed-off-by: Yang Shi <yang.shi@linaro.org> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Yang Shi [Thu, 12 Nov 2015 21:57:00 +0000 (13:57 -0800)]
arm64: bpf: fix JIT frame pointer setup
BPF fp should point to the top of the BPF prog stack. The original
implementation made it point to the bottom incorrectly.
Move A64_SP to fp before reserve BPF prog stack space.
CC: Zi Shen Lim <zlim.lnx@gmail.com> CC: Xi Wang <xi.wang@gmail.com> Signed-off-by: Yang Shi <yang.shi@linaro.org> Reviewed-by: Zi Shen Lim <zlim.lnx@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Måns Rullgård [Thu, 12 Nov 2015 18:41:12 +0000 (18:41 +0000)]
net: phy: vitesse: add support for VSC8601
This adds support for the Vitesse VSC8601 PHY. Generic functions are
used for everything except interrupt handling.
Signed-off-by: Mans Rullgard <mans@mansr.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Måns Rullgård [Thu, 12 Nov 2015 17:40:20 +0000 (17:40 +0000)]
net: phy: at803x: support interrupt on 8030 and 8035
Commit 77a993942 "phy/at8031: enable at8031 to work on interrupt mode"
added interrupt support for the 8031 PHY but left out the other two
chips supported by this driver.
This patch sets the .ack_interrupt and .config_intr functions for the
8030 and 8035 drivers as well.
Signed-off-by: Mans Rullgard <mans@mansr.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
ip_tunnel: disable preemption when updating per-cpu tstats
Drivers like vxlan use the recently introduced
udp_tunnel_xmit_skb/udp_tunnel6_xmit_skb APIs. udp_tunnel6_xmit_skb
makes use of ip6tunnel_xmit, and ip6tunnel_xmit, after sending the
packet, updates the struct stats using the usual
u64_stats_update_begin/end calls on this_cpu_ptr(dev->tstats).
udp_tunnel_xmit_skb makes use of iptunnel_xmit, which doesn't touch
tstats, so drivers like vxlan, immediately after, call
iptunnel_xmit_stats, which does the same thing - calls
u64_stats_update_begin/end on this_cpu_ptr(dev->tstats).
While vxlan is probably fine (I don't know?), calling a similar function
from, say, an unbound workqueue, on a fully preemptable kernel causes
real issues:
The solution would be to protect the whole
this_cpu_ptr(dev->tstats)/u64_stats_update_begin/end blocks with
disabling preemption and then reenabling it.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Sudeep Holla [Wed, 28 Oct 2015 17:17:31 +0000 (17:17 +0000)]
hwmon: (scpi) skip unsupported sensors properly
Currently it's assumed that firmware exports only the class of sensors
supported by the driver. However with newer firmware or SCPI protocol
revision, support for newer classes of sensors can be present.
The driver fails to probe with the following warning if an unsupported
class of sensor is encountered in the firmware.
sysfs: cannot create duplicate filename
'/devices/platform/scpi/scpi:sensors/hwmon/hwmon0/'
------------[ cut here ]------------
WARNING: at fs/sysfs/dir.c:31
Modules linked in:
CPU: 0 PID: 6 Comm: kworker/u12:0 Not tainted 4.3.0-rc7 #137
Hardware name: ARM Juno development board (r0) (DT)
Workqueue: deferwq deferred_probe_work_func
PC is at sysfs_warn_dup+0x54/0x78
LR is at sysfs_warn_dup+0x54/0x78
This patch fixes the above issue by skipping through the unsupported
class of SCPI sensors.
Fixes: 68acc77a2d51 ("hwmon: Support thermal zones registration for SCP temperature sensors") Fixes: ea98b29a05e9 ("hwmon: Support sensors exported via ARM SCP interface") Cc: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Punit Agrawal <punit.agrawal@arm.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Arnd Bergmann [Mon, 16 Nov 2015 16:56:39 +0000 (17:56 +0100)]
hwmon: (scpi) add thermal-of dependency
The newly added scpi thermal support is broken when the scpi driver
is built-in but the thermal driver is a loadable module:
drivers/built-in.o: In function `scpi_hwmon_probe':
(.text+0x444d70): undefined reference to `thermal_zone_of_sensor_unregister'
(.text+0x444d94): undefined reference to `thermal_zone_of_sensor_register'
drivers/built-in.o: In function `scpi_hwmon_remove':
(text+0x444e6c): undefined reference to `thermal_zone_of_sensor_unregister'
This uses the same Kconfig trick that we have in a couple of other
drivers already to ensure we can only select the driver in valid
configurations when either THERMAL_OF is disabled, or when with a
dependency on CONFIG_THERMAL that can force SCPI to be a loadable
module in the case I was hitting.
Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 68acc77a2d51 ("hwmon: Support thermal zones registration for SCP temperature sensors") Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Heiko Carstens [Fri, 13 Nov 2015 13:17:14 +0000 (14:17 +0100)]
s390: remove SALIPL loader
There is no known user, therefore remove the code.
Acked-by: Rob Van Der Heij <robvdheij@nl.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
commit 1f6b83e5e4d3 ("s390: avoid z13 cache aliasing") checks for the
machine type to optimize address space randomization and zero page
allocation to avoid cache aliases.
This check might fail under a hypervisor with migration support.
z/VMs "Single System Image and Live Guest Relocation" facility will
"fake" the machine type of the oldest system in the group. For example
in a group of zEC12 and Z13 the guest appears to run on a zEC12
(architecture fencing within the relocation domain)
Remove the machine type detection and always use cache aliasing
rules that are known to work for all machines. These are the z13
aliasing rules.
Suggested-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Fix the following "maybe used uninitialized" warnings by
initializing the variables to keep the compiler quiet.
There is no "used uninitialized" in this case.
CC [M] drivers/hwmon/applesmc.o
drivers/hwmon/applesmc.c: In function ‘applesmc_init_smcreg’:
drivers/hwmon/applesmc.c:595:43: warning: ‘right_light_sensor’
may be used uninitialized in this function [-Wmaybe-uninitialized]
s->num_light_sensors = left_light_sensor + right_light_sensor;
^
drivers/hwmon/applesmc.c:540:26: note: ‘right_light_sensor’ was
declared here
bool left_light_sensor, right_light_sensor;
^
drivers/hwmon/applesmc.c:595:43: warning: ‘left_light_sensor’ may
be used uninitialized in this function [-Wmaybe-uninitialized]
s->num_light_sensors = left_light_sensor + right_light_sensor;
^
drivers/hwmon/applesmc.c:540:7: note: ‘left_light_sensor’ was
declared here
bool left_light_sensor, right_light_sensor;
^
Li Yang [Thu, 5 Nov 2015 20:18:17 +0000 (14:18 -0600)]
hwmon: (ina2xx) Fix build issue by selecting REGMAP_I2C
Since a0de56c81fcf ("hwmon: (ina2xx) convert driver to using regmap")
the driver requires REGMAP_I2C to build. Select it by default
in Kconfig.
Reported-by: Guo Chunrong <B40290@freescale.com> Cc: Marc Titinger <mtitinger@baylibre.com> Signed-off-by: Li Yang <leoli@freescale.com> Fixes: a0de56c81fcf ("hwmon: (ina2xx) convert driver to using regmap") Signed-off-by: Guenter Roeck <linux@roeck-us.net>
David S. Miller [Mon, 16 Nov 2015 01:16:26 +0000 (20:16 -0500)]
Merge branch 'mv88e6060-fixes'
Neil Armstrong says:
====================
net: dsa: mv88e6060: cleanup and fix setup
This patchset introduces some fixes and a registers addressing cleanup for
the mv88e6060 DSA driver.
The first patch removes the poll_link as mv88e6xxx.
The 3 following patches fixes the setup in regards of the datasheet.
The 2 last patches introduces a clean header and replaces all magic values.
To align with the mv88e6xxx code, add a similar header file
with all the register defines.
The file is based on the mv88e6xxx header for coherency.
Acked-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
projects / karo-tx-linux.git / log