Stef van Os [Thu, 17 Jan 2013 15:36:18 +0000 (16:36 +0100)]
phy/marvell: remove fiber/copper autoselect on 88e1111
Remove the code that always enables copper/fiber autoselect,
ignoring the DIS_FC strapping pin. The default value for this
register is autoselect on anyway, and if you explicitly disable
autoselect via strapping you probably really don't want
autoselect.
Signed-off-by: Stef van Os <stef.van.os@prodrive.nl> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 17 Jan 2013 19:50:12 +0000 (14:50 -0500)]
Merge branch 'wireless'
John W. Linville says:
====================
This batch of fixes is intended for 3.8...
Included is a Bluetooth pull. Gustavo says:
"A few fixes for 3.8. Five of them are just new devices ids addition.
Apart from the that there is fix to a kernel memory leak to userspace from
Anderson Lizardo, two interoperability fixes from Jaganath Kanakkassery and
Szymon Janc. And a crash fix by me."
Along with that, Amitkumar Karwar brings a pair of mwifiex fixes for
problems related to handling of band information within the driver.
These problems can lead to association failures.
Sujith Manoharan fixes a memory leak in the ath9k_htc code (originally
reported by Larry Finger).
The big hero this round is Felix Fietkau. Felix gives us seven
ath9k fixes, including a fix for a race condition, the removal of a
double-free, and a fix for a deadlock, among others.
These have all been in linux-next for at least a couple of days,
with no complaints so far. Please let me know if there are problems!
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Steffen Klassert [Wed, 16 Jan 2013 20:58:10 +0000 (20:58 +0000)]
ipv4: Don't update the pmtu on mtu locked routes
Routes with locked mtu should not use learned pmtu informations,
so do not update the pmtu on these routes.
Reported-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Steffen Klassert [Wed, 16 Jan 2013 20:55:01 +0000 (20:55 +0000)]
ipv4: Remove output route check in ipv4_mtu
The output route check was introduced with git commit 261663b0
(ipv4: Don't use the cached pmtu informations for input routes)
during times when we cached the pmtu informations on the
inetpeer. Now the pmtu informations are back in the routes,
so this check is obsolete. It also had some unwanted side effects,
as reported by Timo Teras and Lukas Tribus.
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Acked-by: Timo Teräs <timo.teras@iki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
Romain KUNTZ [Wed, 16 Jan 2013 12:47:40 +0000 (12:47 +0000)]
ipv6: fix header length calculation in ip6_append_data()
Commit 299b0767 (ipv6: Fix IPsec slowpath fragmentation problem)
has introduced a error in the header length calculation that
provokes corrupted packets when non-fragmentable extensions
headers (Destination Option or Routing Header Type 2) are used.
rt->rt6i_nfheader_len is the length of the non-fragmentable
extension header, and it should be substracted to
rt->dst.header_len, and not to exthdrlen, as it was done before
commit 299b0767.
This patch reverts to the original and correct behavior. It has
been successfully tested with and without IPsec on packets
that include non-fragmentable extensions headers.
Signed-off-by: Romain Kuntz <r.kuntz@ipflavors.com> Acked-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Tushar Behera [Mon, 14 Jan 2013 19:39:01 +0000 (19:39 +0000)]
usbnet: dm9601: Fix incorrect command
commit 24b1042c4eb2 ("usbnet: dm9601: apply introduced usb command
APIs") removes the distiction between DM_WRITE_REG and DM_WRITE_REGS
command. The distiction is reintroduced to the driver so that the
functionality of the driver remains same.
CC: Ming Lei <ming.lei@canonical.com> Signed-off-by: Tushar Behera <tushar.behera@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
The coalesce parameters was set only on the first queue, which caused
interrupt rates to be larger on all the other queues.
This patch allows interrupt rates to be reduced for certain workloads
and colaesce parameters by 41%.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> Cc: steved@us.ibm.com Cc: toml@us.ibm.com Signed-off-by: David S. Miller <davem@davemloft.net>
I changed my email because the vyatta.com mail server is now
redirected to brocade.com; and the Brocade mail system
is not friendly to Linux desktop users.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Jacob Keller [Wed, 5 Dec 2012 07:53:38 +0000 (07:53 +0000)]
ixgbe: Fix overwriting of rx_mtrl in ixgbe_ptp_hwtstamp_ioctl
This patch corrects a bug introduced by commit f3444d8b. The rxmtrl value for
the UDP port to timestamp on was moved above the switch statement, but was
overwritten to 0 if the ioctl selected one of the V1 filters.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Jacob Keller [Sat, 8 Dec 2012 09:04:25 +0000 (09:04 +0000)]
ixgbe: only compile ixgbe_debugfs.o when enabled
This patch modifies ixgbe_debugfs.c and the Makefile for the ixgbe
driver to only compile the file when the config is enabled. This means
we can remove the #ifdef inside the ixgbe_debugfs.c file.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
TG3_PHY_AUXCTL_SMDSP_ENABLE/DISABLE macros do a blind write to the phy
auxiliary control register and overwrite the EXT_PKT_LEN (bit 14) resulting
in intermittent crc errors on jumbo frames with some link partners. Change
the code to do a read/modify/write.
Signed-off-by: Nithin Nayak Sujir <nsujir@broadcom.com> Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
tg3: Avoid null pointer dereference in tg3_interrupt in netconsole mode
When netconsole is enabled, logging messages generated during tg3_open
can result in a null pointer dereference for the uninitialized tg3
status block. Use the irq_sync flag to disable polling in the early
stages. irq_sync is cleared when the driver is enabling interrupts after
all initialization is completed.
Signed-off-by: Nithin Nayak Sujir <nsujir@broadcom.com> Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Paul Moore [Mon, 14 Jan 2013 07:12:19 +0000 (07:12 +0000)]
tun: fix LSM/SELinux labeling of tun/tap devices
This patch corrects some problems with LSM/SELinux that were introduced
with the multiqueue patchset. The problem stems from the fact that the
multiqueue work changed the relationship between the tun device and its
associated socket; before the socket persisted for the life of the
device, however after the multiqueue changes the socket only persisted
for the life of the userspace connection (fd open). For non-persistent
devices this is not an issue, but for persistent devices this can cause
the tun device to lose its SELinux label.
We correct this problem by adding an opaque LSM security blob to the
tun device struct which allows us to have the LSM security state, e.g.
SELinux labeling information, persist for the lifetime of the tun
device. In the process we tweak the LSM hooks to work with this new
approach to TUN device/socket labeling and introduce a new LSM hook,
security_tun_dev_attach_queue(), to approve requests to attach to a
TUN queue via TUNSETQUEUE.
The SELinux code has been adjusted to match the new LSM hooks, the
other LSMs do not make use of the LSM TUN controls. This patch makes
use of the recently added "tun_socket:attach_queue" permission to
restrict access to the TUNSETQUEUE operation. On older SELinux
policies which do not define the "tun_socket:attach_queue" permission
the access control decision for TUNSETQUEUE will be handled according
to the SELinux policy's unknown permission setting.
Signed-off-by: Paul Moore <pmoore@redhat.com> Acked-by: Eric Paris <eparis@parisplace.org> Tested-by: Jason Wang <jasowang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Paul Moore [Mon, 14 Jan 2013 07:12:13 +0000 (07:12 +0000)]
selinux: add the "attach_queue" permission to the "tun_socket" class
Add a new permission to align with the new TUN multiqueue support,
"tun_socket:attach_queue".
The corresponding SELinux reference policy patch is show below:
diff --git a/policy/flask/access_vectors b/policy/flask/access_vectors
index 28802c5..a0664a1 100644
--- a/policy/flask/access_vectors
+++ b/policy/flask/access_vectors
@@ -827,6 +827,9 @@ class kernel_service
class tun_socket
inherits socket
+{
+ attach_queue
+}
class x_pointer
inherits x_device
Signed-off-by: Paul Moore <pmoore@redhat.com> Acked-by: Eric Paris <eparis@parisplace.org> Tested-by: Jason Wang <jasowang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Sun, 13 Jan 2013 18:21:51 +0000 (18:21 +0000)]
tcp: fix a panic on UP machines in reqsk_fastopen_remove
spin_is_locked() on a non !SMP build is kind of useless.
BUG_ON(!spin_is_locked(xx)) is guaranteed to crash.
Just remove this check in reqsk_fastopen_remove() as
the callers do hold the socket lock.
Reported-by: Ketan Kulkarni <ketkulka@gmail.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Jerry Chu <hkchu@google.com> Cc: Yuchung Cheng <ycheng@google.com> Cc: Dave Taht <dave.taht@gmail.com> Acked-by: H.K. Jerry Chu <hkchu@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Mon, 14 Jan 2013 21:19:08 +0000 (13:19 -0800)]
Merge tag 'dt-fixes-for-3.8' of git://sources.calxeda.com/kernel/linux
Pull devicetree fixes from Rob Herring:
"Two fixes to prevent unconditional re-compile of dts files on arm and
arm64."
* tag 'dt-fixes-for-3.8' of git://sources.calxeda.com/kernel/linux:
ARM: dts: prevent *.dtb from always being rebuilt
arm64: dts: prevent *.dtb from always being rebuilt
Linus Torvalds [Mon, 14 Jan 2013 21:17:50 +0000 (13:17 -0800)]
vfs: add missing virtual cache flush after editing partial pages
Andrew Morton pointed this out a month ago, and then I completely forgot
about it.
If we read a partial last page of a block device, we will zero out the
end of the page, but since that page can then be mapped into user space,
we should also make sure to flush the cache on architectures that have
virtual caches. We have the flush_dcache_page() function for this, so
use it.
Now, in practice this really never matters, because nobody sane uses
virtual caches to begin with, and they largely exist on old broken RISC
arhitectures.
And even if you did run on one of those obsolete CPU's, the whole "mmap
and access the last partial page of a block device" behavior probably
doesn't actually exist. The normal IO functions (read/write) will never
see the zeroed-out part of the page that migth not be coherent in the
cache, because they honor the size of the device.
So I'm marking this for stable (3.7 only), but I'm not sure anybody will
ever care.
Felix Fietkau [Mon, 14 Jan 2013 15:56:46 +0000 (16:56 +0100)]
ath9k: disable the tasklet before taking the PCU lock
Fixes a reported CPU soft lockup where the tasklet tries to acquire the
lock and blocks while ath_prepare_reset (holding the lock) waits for it
to complete.
Cc: stable@vger.kernel.org Reported-by: Robert Shade <robert.shade@gmail.com> Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Felix Fietkau [Mon, 14 Jan 2013 09:50:15 +0000 (10:50 +0100)]
ath9k: remove sc->rx.rxbuflock to fix a deadlock
The commit "ath9k: fix rx flush handling" added a deadlock that happens
because ath_rx_tasklet is called in a section that has already taken the
rx buffer lock.
It seems that the only purpose of the rxbuflock was a band-aid fix to the
reset vs rx tasklet race, which has been properly fixed in the commit
"ath9k: add a better fix for the rx tasklet vs rx flush race".
Now that the fix is in, we can safely remove the lock to avoid such issues.
Cc: stable@vger.kernel.org Reported-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Linus Torvalds [Mon, 14 Jan 2013 18:56:05 +0000 (10:56 -0800)]
Merge tag 'sound-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Most of commits found here are for ASoC device specific fixes,
arizona, cs4271, wm5102, wm2200, etc, in addition to a couple of
memory leak fixes in ASoC core.
Other than that, regression fixes in HD-audio and USB-audio, and a fix
for new Realtek codecs."
* tag 'sound-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (30 commits)
ALSA: usb-audio: Fix NULL dereference by access to non-existing substream
ALSA: hda - Add support of new codec ALC284
ALSA: usb-audio: Make ebox44_table static
ALSA: hdspm - Fix wordclock status on AES32
Revert "ALSA: hda - Shut up pins at power-saving mode with Conexnat codecs"
ALSA: hda - Disable runtime D3 for Intel CPT & co
ALSA: pxa27x: fix ac97 warm reset
ALSA: pxa27x: fix ac97 cold reset
ASoC: wm_adsp: Ensure that block writes are from DMA aligned addresses
ASoC: wm2000: Fix sense of speech clarity enable
ASoC: wm5100: Remove DSP B and left justified formats
ASoC: arizona: Remove DSP B and left justified AIF modes
ASoC: wm2200: Remove DSP B and left justified AIF modes
ASoC: wm5102: Improve speaker enable performance
ASoC: core: fix the memory leak in case of remove_aux_dev()
ASoC: core: fix the memory leak in case of device_add() failure
ASoC: cs42l52: Catch no-match case in cs42l52_get_clk
ASoC: lm49453: Update lm49453_reg_defs values as per LM49453 HW revision-B
ASoC: lm49453: Fix adc, mic and sidetone volume ranges
ASoC: arizona: Correct FLL source definitions
...
Linus Torvalds [Mon, 14 Jan 2013 17:08:38 +0000 (09:08 -0800)]
Merge tag 'staging-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging fixes from Greg Kroah-Hartman:
"Here are a number of small fixes to staging drivers for your 3.8-rc3
tree.
Well, the omapdrm fixes aren't really "small" but they were waiting on
a number of other drm patches to go in through the drm tree, and got
delayed by my vacation over the holidays. They are totally
self-contained, everyone involved have acked them, and they fix issues
that people have been having with the driver.
Other than that one, it's a bunch of tiny bugfixes for a number of
reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'staging-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (36 commits)
staging: zram: fix invalid memory references during disk write
staging: tidspbridge: use prepare/unprepare on dsp clocks
staging: tidspbridge: Fix build breakage due to splitting CM functions.
staging: comedi: comedi_test: fix race when cancelling command
staging: comedi: Kconfig: COMEDI_NI_AT_A2150 should select COMEDI_FC
staging: comedi: prevent auto-unconfig of manually configured devices
staging: comedi: fix minimum AO period for NI 625x and NI 628x
staging: vme_pio2: fix oops on module unloading
staging: speakup: avoid out-of-range access in synth_add()
staging: speakup: avoid out-of-range access in synth_init()
staging: rtl8192e: Fix failure to check pci_map_single()
staging: rtl8187se: Fix failure to check pci_map_single()
staging: drm/imx: fix double free bug in error path
staging: drm/imx: several bug fixes
staging: drm/imx: check return value of ipu_reset()
staging: drm/omap: fix flags in dma buf exporting
staging: drm/omap: use omapdss low level API
staging/fwserial: Update TODO file per reviewer comments
staging/fwserial: Limit tx/rx to 1394-2008 spec maximum
staging/fwserial: Refine Kconfig help text
...
Linus Torvalds [Mon, 14 Jan 2013 17:07:57 +0000 (09:07 -0800)]
Merge tag 'usb-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg Kroah-Hartman:
"Here are a bunch of USB fixes for your 3.8-rc3 tree. They all either
fix problems that have been reported (like the xhci/hub changes) or
add new device ids to existing drivers.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'usb-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (39 commits)
usb: ftdi_sio: Crucible Technologies COMET Caller ID - pid added
usb: host: ohci-tmio: fix compile warning
USB: Add device quirk for Microsoft VX700 webcam
USB: ehci-fsl: fix regression on mpc5121e
usb: chipidea: Allow disabling streaming not only in udc mode
USB: fsl-mph-dr-of: fix regression on mpc5121e
USB: select USB_ARCH_HAS_EHCI for MXS
USB: hub: handle claim of enabled remote wakeup after reset
USB: cdc-acm: Add support for "PSC Scanning, Magellan 800i"
USB: option: add Nexpring NP10T terminal id
USB: option: add Telekom Speedstick LTE II
USB: option: blacklist network interface on ZTE MF880
usb: imx21-hcd: Include missing linux/module.h
USB: option: Add new MEDIATEK PID support
USB: ehci: make debug port in-use detection functional again
USB: usbtest: fix test number in log message
xhci: Avoid "dead ports", add roothub port polling.
USB: Handle warm reset failure on empty port.
USB: Ignore port state until reset completes.
USB: Increase reset timeout.
...
Linus Torvalds [Mon, 14 Jan 2013 17:07:11 +0000 (09:07 -0800)]
Merge tag 'driver-core-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg Kroah-Hartman:
"Here are two patches for 3.8-rc3.
One removes the __dev* defines from init.h now that all usages of it
are gone from your tree. The other fix is for debugfs's paramater
that was using the wrong base for the option.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'driver-core-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
debugfs: convert gid= argument from decimal, not octal
Remove __dev* markings from init.h
Linus Torvalds [Mon, 14 Jan 2013 17:06:24 +0000 (09:06 -0800)]
Merge tag 'char-misc-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc fix from Greg Kroah-Hartman:
"Here is a single fix for the mei driver that resolves a reported
issue.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'char-misc-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
mei: fix mismatch in mutex unlock-lock in mei_amthif_read()
Linus Torvalds [Mon, 14 Jan 2013 16:56:31 +0000 (08:56 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Nothing too astounding
- nouveau: bunch of regression fixes and oops fixes
- radeon: UMS fixes, rn50 fix, dma fix
- udl: fix EDID retrieval for large EDIDs."
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
udldrmfb: udl_get_edid: drop unneeded i--
udldrmfb: udl_get_edid: usb_control_msg buffer must not be on the stack
udldrmfb: Fix EDID not working with monitors with EDID extension blocks
drm/nvc0/fb: fix crash when different mutex is used to protect same list
drm/nouveau/clock: fix support for more than 2 monitors on nve0
drm/nv50/disp: fix selection of bios script for analog outputs
drm/nv17-50: restore fence buffer on resume
drm/nouveau: fix blank LVDS screen regression on pre-nv50 cards
drm/nouveau: fix nouveau_client allocation failure path
drm/nouveau: don't return freed object from nouveau_handle_create
drm/nouveau/vm: fix memory corruption when pgt allocation fails
drm/nouveau: add locking around instobj list operations
drm/nouveau: do not forcibly power on lvds panels
drm/nouveau/devinit: ensure legacy vga control is enabled during post
radeon/kms: fix dma relocation checking
radeon/kms: force rn50 chip to always report connected on analog output
drm/radeon: fix error path in kpage allocation
drm/radeon: fix a bogus kfree
drm/radeon: fix NULL pointer dereference in UMS mode
1) Fix regression allowing IP_TTL setting of zero, fix from Cong Wang.
2) Fix leak regressions in tunap, from Jason Wang.
3) be2net driver always returns IRQ_HANDLED in INTx handler, fix from
Sathya Perla.
4) qlge doesn't really support NETIF_F_TSO6, don't set that flag. Fix
from Amerigo Wang.
5) Add 802.11ad Atheros wil6210 driver, from Vladimir Kondratiev.
6) Fix MTU calculations in mac80211 layer, from T Krishna Chaitanya.
7) Station info layer of mac80211 needs to use del_timer_sync(), from
Johannes Berg.
8) tcp_read_sock() can loop forever, because we don't immediately stop
when recv_actor() returns zero. Fix from Eric Dumazet.
9) Fix WARN_ON() in tcp_cleanup_rbuf(). We have to use sk_eat_skb() in
tcp_recv_skb() to handle the case where a large GRO packet is split
up while it is use by a splice() operation. Fix also from Eric
Dumazet.
10) addrconf_get_prefix_route() in ipv6 tests flags incorrectly, it
does:
if (X && (p->flags & Y) != 0)
when it really meant to go:
if (X && (p->flags & X) != 0)
fix from Romain Kuntz.
11) Fix lost Kconfig dependency for bfin_mac driver hardware
timestamping. From Lars-Peter Clausen.
12) Fix regression in handling of RST without ACK in TCP, from Eric
Dumazet.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (37 commits)
be2net: fix unconditionally returning IRQ_HANDLED in INTx
tuntap: fix leaking reference count
tuntap: forbid calling TUNSETIFF when detached
tuntap: switch to use rtnl_dereference()
net, wireless: overwrite default_ethtool_ops
qlge: remove NETIF_F_TSO6 flag
tcp: accept RST without ACK flag
net: ethernet: xilinx: Do not use NO_IRQ in axienet
net: ethernet: xilinx: Do not use axienet on PPC
bnx2x: Allow management traffic after boot from SAN
bnx2x: Fix fastpath structures when memory allocation fails
bfin_mac: Restore hardware time-stamping dependency on BF518
tun: avoid owner checks on IFF_ATTACH_QUEUE
bnx2x: move debugging code before the return
tuntap: refuse to re-attach to different tun_struct
ipv6: use addrconf_get_prefix_route for prefix route lookup [v2]
ipv6: fix the noflags test in addrconf_get_prefix_route
tcp: fix splice() and tcp collapsing interaction
tcp: splice: fix an infinite loop in tcp_read_sock()
net: prevent setting ttl=0 via IP_TTL
...
Stephen Warren [Sat, 29 Dec 2012 00:42:46 +0000 (17:42 -0700)]
ARM: dts: prevent *.dtb from always being rebuilt
if_changed (used by the *.dts->*.dtc rule) rebuilds files if they aren't
contained in $(targets). (make V=2 indicates this). Add $(dtb-y) to
$(targets) to prevent *.dtb from always being rebuilt.
This fixes a regression introduced by the .dtb rule rework in 499cd82
"ARM: dt: change .dtb build rules to build in dts directory".
Reported-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Stephen Warren [Sat, 29 Dec 2012 00:42:47 +0000 (17:42 -0700)]
arm64: dts: prevent *.dtb from always being rebuilt
if_changed (used by the *.dts->*.dtc rule) rebuilds files if they aren't
contained in $(targets). (make V=2 indicates this). Add $(dtb-y) to
$(targets) to prevent *.dtb from always being rebuilt. Note
This fixes a regression introduced by the .dtb rule rework in da4cbc6
"arm64: use new common dtc rule", although since arm64 doesn't actually
have any *.dts yet, this isn't a critical issue.
Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Nitin Gupta [Wed, 2 Jan 2013 16:53:41 +0000 (08:53 -0800)]
staging: zram: fix invalid memory references during disk write
Fixes a bug introduced by commit c8f2f0db1 ("zram: Fix handling
of incompressible pages") which caused invalid memory references
during disk write. Invalid references could occur in two cases:
- Incoming data expands on compression: In this case, reference was
made to kunmap()'ed bio page.
- Partial (non PAGE_SIZE) write with incompressible data: In this
case, reference was made to a kfree()'ed buffer.
Hans de Goede [Fri, 11 Jan 2013 11:08:57 +0000 (12:08 +0100)]
udldrmfb: udl_get_edid: usb_control_msg buffer must not be on the stack
The buffer passed to usb_control_msg may end up in scatter-gather list, and
may thus not be on the stack. Having it on the stack usually works on x86, but
not on other archs.
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
Hans de Goede [Fri, 11 Jan 2013 11:08:56 +0000 (12:08 +0100)]
udldrmfb: Fix EDID not working with monitors with EDID extension blocks
udldrmfb only reads the main EDID block, and if that advertises extensions
the drm_edid code expects them to be present, and starts reading beyond the
buffer udldrmfb passes it.
Although it may be possible to read more EDID info with the udl we simpy don't
know how, and even if trial and error gets it working on one device, that is
no guarantee it will work on other revisions. So this patch does a simple fix
in the form of patching the EDID info to report 0 extension blocks, this
fixes udldrmfb only doing 1024x768 on monitors with EDID extension blocks.
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
Dave Airlie [Sun, 13 Jan 2013 22:16:54 +0000 (08:16 +1000)]
Merge branch 'drm-fixes-3.8' of git://people.freedesktop.org/~agd5f/linux into drm-next
Fixes for UMS mode which has been broken for a while plus an rn50 fix
and a dma fix.
* 'drm-fixes-3.8' of git://people.freedesktop.org/~agd5f/linux:
radeon/kms: fix dma relocation checking
radeon/kms: force rn50 chip to always report connected on analog output
drm/radeon: fix error path in kpage allocation
drm/radeon: fix a bogus kfree
drm/radeon: fix NULL pointer dereference in UMS mode
Dave Airlie [Sun, 13 Jan 2013 22:15:36 +0000 (08:15 +1000)]
Merge branch 'drm-nouveau-fixes' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-next
Regression fixes since rework mostly.
* 'drm-nouveau-fixes' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
drm/nvc0/fb: fix crash when different mutex is used to protect same list
drm/nouveau/clock: fix support for more than 2 monitors on nve0
drm/nv50/disp: fix selection of bios script for analog outputs
drm/nv17-50: restore fence buffer on resume
drm/nouveau: fix blank LVDS screen regression on pre-nv50 cards
drm/nouveau: fix nouveau_client allocation failure path
drm/nouveau: don't return freed object from nouveau_handle_create
drm/nouveau/vm: fix memory corruption when pgt allocation fails
drm/nouveau: add locking around instobj list operations
drm/nouveau: do not forcibly power on lvds panels
drm/nouveau/devinit: ensure legacy vga control is enabled during post
usb: ftdi_sio: Crucible Technologies COMET Caller ID - pid added
Simple fix to add support for Crucible Technologies COMET Caller ID
USB decoder - a device containing FTDI USB/Serial converter chip,
handling 1200bps CallerID messages decoded from the phone line -
adding correct USB PID is sufficient.
Tested to apply cleanly and work flawlessly against 3.6.9, 3.7.0-rc8
and 3.8.0-rc3 on both amd64 and x86 arches.
Jan Engelhardt [Thu, 10 Jan 2013 12:30:05 +0000 (12:30 +0000)]
netfilter: x_tables: print correct hook names for ARP
arptables 0.0.4 (released on 10th Jan 2013) supports calling the
CLASSIFY target, but on adding a rule to the wrong chain, the
diagnostic is as follows:
# arptables -A INPUT -j CLASSIFY --set-class 0:0
arptables: Invalid argument
# dmesg | tail -n1
x_tables: arp_tables: CLASSIFY target: used from hooks
PREROUTING, but only usable from INPUT/FORWARD
This is incorrect, since xt_CLASSIFY.c does specify
(1 << NF_ARP_OUT) | (1 << NF_ARP_FORWARD).
This patch corrects the x_tables diagnostic message to print the
proper hook names for the NFPROTO_ARP case.
Affects all kernels down to and including v2.6.31.
Signed-off-by: Jan Engelhardt <jengelh@inai.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Aleksi Torhamo [Wed, 9 Jan 2013 18:08:48 +0000 (20:08 +0200)]
drm/nvc0/fb: fix crash when different mutex is used to protect same list
Fixes regression introduced in commit 861d2107
"drm/nouveau/fb: merge fb/vram and port to subdev interfaces"
nv50_fb_vram_{new,del} functions were changed to use
nouveau_subdev->mutex instead of the old nouveau_mm->mutex.
nvc0_fb_vram_new still uses the nouveau_mm->mutex, but nvc0 doesn't
have its own fb_vram_del function, using nv50_fb_vram_del instead.
Because of this, on nvc0 a different mutex ends up being used to protect
additions and deletions to the same list.
This patch is a -stable candidate for 3.7.
Signed-off-by: Aleksi Torhamo <aleksi@torhamo.net> Reported-by: Roy Spliet <r.spliet@student.tudelft.nl> Tested-by: Roy Spliet <r.spliet@student.tudelft.nl> Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Cc: stable@vger.kernel.org
Aleksi Torhamo [Fri, 4 Jan 2013 16:39:13 +0000 (18:39 +0200)]
drm/nouveau/clock: fix support for more than 2 monitors on nve0
Fixes regression introduced in commit 70790f4f
"drm/nouveau/clock: pull in the implementation from all over the place"
When code was moved from nv50_crtc_set_clock to nvc0_clock_pll_set,
the PLLs it is used for got limited to only the first two VPLLs.
nv50_crtc_set_clock was only called to change VPLLs, so it didn't
limit what it was used for in any way. Since nvc0_clock_pll_set is
used for all PLLs, it has to specify which PLLs the code is used for,
and only listed the first two VPLLs.
Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=58735
This patch is a -stable candidate for 3.7.
Signed-off-by: Aleksi Torhamo <aleksi@torhamo.net> Tested-by: Aleksi Torhamo <aleksi@torhamo.net> Tested-by: Sean Santos <quantheory@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Cc: stable@vger.kernel.org
Marcin Slusarz [Thu, 3 Jan 2013 18:38:45 +0000 (19:38 +0100)]
drm/nv50/disp: fix selection of bios script for analog outputs
Analog output number was overwritten by value from digital output path.
Fix it.
Fixes resume from s2ram: https://bugs.freedesktop.org/show_bug.cgi?id=58729
(as stumbled on by J Binder, Pontus Fuchs and me)
Fixes blank screen on module load (reported by Sune Mølgaard).
Marcin Slusarz [Tue, 25 Dec 2012 17:13:22 +0000 (18:13 +0100)]
drm/nv17-50: restore fence buffer on resume
Since commit 5e120f6e4b3f35b741c5445dfc755f50128c3c44 "drm/nouveau/fence:
convert to exec engine, and improve channel sync" nouveau fence sync
implementation for nv17-50 and nvc0+ started to rely on state of fence buffer
left by previous sync operation. But as pinned bo's (where fence state is
stored) are not saved+restored across suspend/resume, we need to do it
manually.
Marcin Slusarz [Tue, 18 Dec 2012 19:30:47 +0000 (20:30 +0100)]
drm/nouveau: fix blank LVDS screen regression on pre-nv50 cards
Commit 2a44e499 ("drm/nouveau/disp: introduce proper init/fini, separate
from create/destroy") started to call display init routines on pre-nv50
hardware on module load. But LVDS init code sets driver state in a way
which prevents modesetting code from operating properly.
nv04_display_init calls nv04_dfp_restore, which sets encoder->last_dpms to
NV_DPMS_CLEARED.
nv04_lvds_dpms checks last_dpms mode (which is NV_DPMS_CLEARED) and wrongly
assumes it's a "powersaving mode", the new one (DRM_MODE_DPMS_OFF) is too,
so it skips calling some crucial lvds scripts.
Reported-by: Chris Paulson-Ellis <chris@edesix.com> Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Cc: stable@vger.kernel.org
Marcin Slusarz [Mon, 10 Dec 2012 20:30:51 +0000 (21:30 +0100)]
drm/nouveau/vm: fix memory corruption when pgt allocation fails
If we return freed vm, nouveau_drm_open will happily call nouveau_cli_destroy,
which will try to free it again.
Reported-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Mon, 10 Dec 2012 08:53:43 +0000 (18:53 +1000)]
drm/nouveau: do not forcibly power on lvds panels
This fix was put in place to fix a bug where the eDP panel on certain
laptops fails to respond over the aux channel after suspend.
It appears that on some systems (Dell M6600, with LVDS panel) there's a
very bad interaction with the eDP init table that causes the SOR to get
very confused and not drive the panel correctly, leading to bleed.
A DPMS off/on cycle is enough to bring it back, but, this will avoid the
problem by not touching the panel GPIOs at times we're not meant to.
Sathya Perla [Fri, 11 Jan 2013 22:47:02 +0000 (22:47 +0000)]
be2net: fix unconditionally returning IRQ_HANDLED in INTx
commit e49cc34f introduced an unconditional IRQ_HANDLED return in be_intx()
to workaround Lancer and BE2 HW issues. This is bad as it prevents the kernel
from detecting interrupt storms due to broken HW.
The BE2/Lancer HW issues are:
1) In Lancer, there is no means for the driver to detect if the interrupt
belonged to device, other than counting and notifying events.
2) In Lancer de-asserting INTx takes a while, causing the INTx irq handler
to be called multiple times till the de-assert happens.
3) In BE2, we see an occasional interrupt even when EQs are unarmed.
Issue (1) can cause the notified events to be orphaned, if NAPI was already
running.
This patch fixes this issue by scheduling NAPI only if it is not scheduled
already. Doing this also takes care of possible events_get() race that may be
caused due to issue (2) and (3). Also, IRQ_HANDLED is returned only the first
time zero events are detected.
(Thanks Ben H. for the feedback and suggestions.)
Signed-off-by: Sathya Perla <sathya.perla@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
netfilter: nf_conntrack: fix BUG_ON while removing nf_conntrack with netns
canqun zhang reported that we're hitting BUG_ON in the
nf_conntrack_destroy path when calling kfree_skb while
rmmod'ing the nf_conntrack module.
Currently, the nf_ct_destroy hook is being set to NULL in the
destroy path of conntrack.init_net. However, this is a problem
since init_net may be destroyed before any other existing netns
(we cannot assume any specific ordering while releasing existing
netns according to what I read in recent emails).
Thanks to Gao feng for initial patch to address this issue.
Jason Wang [Fri, 11 Jan 2013 16:59:34 +0000 (16:59 +0000)]
tuntap: fix leaking reference count
Reference count leaking of both module and sock were found:
- When a detached file were closed, its sock refcnt from device were not
released, solving this by add the sock_put().
- The module were hold or drop unconditionally in TUNSETPERSIST, which means we
if we set the persist flag for N times, we need unset it for another N
times. Solving this by only hold or drop an reference when there's a flag
change and also drop the reference count when the persist device is deleted.
Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jason Wang [Fri, 11 Jan 2013 16:59:33 +0000 (16:59 +0000)]
tuntap: forbid calling TUNSETIFF when detached
Michael points out that even after Stefan's fix the TUNSETIFF is still allowed
to create a new tap device. This because we only check tfile->tun but the
tfile->detached were introduced. Fix this by failing early in tun_set_iff() if
the file is detached. After this fix, there's no need to do the check again in
tun_set_iff(), so this patch removes it.
Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Felipe Balbi [Thu, 10 Jan 2013 12:32:39 +0000 (14:32 +0200)]
usb: host: ohci-tmio: fix compile warning
Fix the following compile warning:
In file included from drivers/usb/host/ohci-hcd.c:1170:0:
drivers/usb/host/ohci-tmio.c: In function 'tmio_start_hc':
drivers/usb/host/ohci-tmio.c:130:2: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 4 has type 'resource_size_t' [-Wformat]
seen on ARM 32-bit builds.
Signed-off-by: Felipe Balbi <balbi@ti.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fsl-ehci probing fails on mpc5121e:
...
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
fsl-ehci fsl-ehci.0: Freescale On-Chip EHCI Host Controller
fsl-ehci fsl-ehci.0: new USB bus registered, assigned bus number 1
fsl-ehci fsl-ehci.0: Could not get controller version
fsl-ehci fsl-ehci.0: can't setup
fsl-ehci fsl-ehci.0: USB bus 1 deregistered
fsl-ehci fsl-ehci.0: init fsl-ehci.0 fail, -22
fsl-ehci: probe of fsl-ehci.0 failed with error -22
Fix it by returning appropriate version info for mpc5121, too.
Maxime Ripard [Fri, 11 Jan 2013 17:06:21 +0000 (18:06 +0100)]
USB: select USB_ARCH_HAS_EHCI for MXS
Commit 09f6ffde (USB: EHCI: fix build error by making ChipIdea host a
normal EHCI driver) introduced a dependency on USB_EHCI_HCD for the
chipidea USB host driver, that in turns depends on USB_ARCH_HAS_EHCI.
If this symbol is not set for MXS, the MXS boards are not able to use
the chipidea driver anymore.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
wireless core does not correctly assign ethtool_ops.
After alloc_netdev*() call, some cfg80211 drivers provide they own
ethtool_ops, but some do not. For them, wireless core provide generic
cfg80211_ethtool_ops, which is assigned in NETDEV_REGISTER notify call:
if (!dev->ethtool_ops)
dev->ethtool_ops = &cfg80211_ethtool_ops;
But after Eric's commit, dev->ethtool_ops is no longer NULL (on cfg80211
drivers without custom ethtool_ops), but points to &default_ethtool_ops.
In order to fix the problem, provide function which will overwrite
default_ethtool_ops and use it by wireless core.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Amerigo Wang [Thu, 10 Jan 2013 22:52:54 +0000 (22:52 +0000)]
qlge: remove NETIF_F_TSO6 flag
It is werid that qlge driver supports NETIF_F_TSO6 but
not NETIF_F_IPV6_CSUM. This also causes some kernel warning [1]
when VLAN device setups on a qlge interface.
I think the qlge hardware doesn't support NETIF_F_IPV6_CSUM,
so we have to just remove the NETIF_F_TSO6 flag.
After this patch, the TCP/IPv6 traffic becomes normal again,
no kernel warnings any more.
NOTE: I only tested it on 2.6.32 kernel, even if the upstream
kernel could fix this automatically (it is hard to track NETIF*
flags), removing it is also safe.
Cc: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com> Cc: Ron Mercer <ron.mercer@qlogic.com> Cc: linux-driver@qlogic.com Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Cong Wang <amwang@redhat.com> Acked-by: Jitendra Kalsaria <jitendra.kalsaria@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 11 Jan 2013 22:56:41 +0000 (14:56 -0800)]
Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull a hwmon patch from Guenter Roeck:
"Fix build error in vexpress driver"
* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (vexpress) Fix build error seen if CONFIG_OF_DEVICE is not set
Linus Torvalds [Fri, 11 Jan 2013 22:55:15 +0000 (14:55 -0800)]
Merge branch 'akpm' (incoming fixes from Andrew)
Merge misc fixes from Andrew Morton:
"The audit fixes have been floating around for a while - Al and Eric
aren't responding to either myself or Kees so I asked Kees to
re-review them and here they are."
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (22 commits)
lib/rbtree.c: avoid the use of non-static __always_inline
MAINTAINERS: Omar had moved
mm: compaction: partially revert capture of suitable high-order page
linux/audit.h: move ptrace.h include to kernel header
kernel/audit.c: avoid negative sleep durations
audit: catch possible NULL audit buffers
audit: create explicit AUDIT_SECCOMP event type
MAINTAINERS: fix a status pattern
MAINTAINERS: fix arch/arm/plat-omap/include/plat/omap_hwmod.h
mm: thp: acquire the anon_vma rwsem for write during split
mm: mmap: annotate vm_lock_anon_vma locking properly for lockdep
lockdep, rwsem: provide down_write_nest_lock()
arch/mn10300/Kconfig: select CONFIG_GENERIC_ATOMIC64
mm: bootmem: fix free_all_bootmem_core() with odd bitmap alignment
mm: use aligned zone start for pfn_to_bitidx calculation
fs/exec.c: work around icc miscompilation
mm: compaction: fix echo 1 > compact_memory return error issue
mm: memblock: fix wrong memmove size in memblock_merge_regions()
drivers/video/ssd1307fb.c: fix bit order bug in the byte translation function
mm: migrate: check page_count of THP before migrating
...
lib/rbtree.c: avoid the use of non-static __always_inline
lib/rbtree.c declared __rb_erase_color() as __always_inline void, and
then exported it with EXPORT_SYMBOL.
This was because __rb_erase_color() must be exported for augmented
rbtree users, but it must also be inlined into rb_erase() so that the
dummy callback can get optimized out of that call site.
(Actually with a modern compiler, none of the dummy callback functions
should even be generated as separate text functions).
The above usage is legal C, but it was unusual enough for some compilers
to warn about it. This change makes things more explicit, with a static
__always_inline ____rb_erase_color function for use in rb_erase(), and a
separate non-inline __rb_erase_color function for use in
rb_erase_augmented call sites.
Signed-off-by: Michel Lespinasse <walken@google.com> Reported-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Chen Gang [Fri, 11 Jan 2013 22:32:17 +0000 (14:32 -0800)]
MAINTAINERS: Omar had moved
Signed-off-by: Chen Gang <gang.chen@asianux.com> Cc: Omar Ramirez Luna <omar.ramirez@ti.com> Cc: Omar Ramirez Luna <omar.ramirez@copitl.com> Cc: David Miller <davem@davemloft.net> Cc: Greg KH <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mel Gorman [Fri, 11 Jan 2013 22:32:16 +0000 (14:32 -0800)]
mm: compaction: partially revert capture of suitable high-order page
Eric Wong reported on 3.7 and 3.8-rc2 that ppoll() got stuck when
waiting for POLLIN on a local TCP socket. It was easier to trigger if
there was disk IO and dirty pages at the same time and he bisected it to
commit 1fb3f8ca0e92 ("mm: compaction: capture a suitable high-order page
immediately when it is made available").
The intention of that patch was to improve high-order allocations under
memory pressure after changes made to reclaim in 3.6 drastically hurt
THP allocations but the approach was flawed. For Eric, the problem was
that page->pfmemalloc was not being cleared for captured pages leading
to a poor interaction with swap-over-NFS support causing the packets to
be dropped. However, I identified a few more problems with the patch
including the fact that it can increase contention on zone->lock in some
cases which could result in async direct compaction being aborted early.
In retrospect the capture patch took the wrong approach. What it should
have done is mark the pageblock being migrated as MIGRATE_ISOLATE if it
was allocating for THP and avoided races that way. While the patch was
showing to improve allocation success rates at the time, the benefit is
marginal given the relative complexity and it should be revisited from
scratch in the context of the other reclaim-related changes that have
taken place since the patch was first written and tested. This patch
partially reverts commit 1fb3f8ca0e92 ("mm: compaction: capture a
suitable high-order page immediately when it is made available").
Reported-and-tested-by: Eric Wong <normalperson@yhbt.net> Tested-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Mel Gorman <mgorman@suse.de> Cc: David Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mike Frysinger [Fri, 11 Jan 2013 22:32:13 +0000 (14:32 -0800)]
linux/audit.h: move ptrace.h include to kernel header
While the kernel internals want pt_regs (and so it includes
linux/ptrace.h), the user version of audit.h does not need it. So move
the include out of the uapi version.
This avoids issues where people want the audit defines and userland
ptrace api. Including both the kernel ptrace and the userland ptrace
headers can easily lead to failure.
Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: Eric Paris <eparis@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrew Morton [Fri, 11 Jan 2013 22:32:11 +0000 (14:32 -0800)]
kernel/audit.c: avoid negative sleep durations
audit_log_start() performs the same jiffies comparison in two places.
If sufficient time has elapsed between the two comparisons, the second
one produces a negative sleep duration:
schedule_timeout: wrong timeout value fffffffffffffff0
Pid: 6606, comm: trinity-child1 Not tainted 3.8.0-rc1+ #43
Call Trace:
schedule_timeout+0x305/0x340
audit_log_start+0x311/0x470
audit_log_exit+0x4b/0xfb0
__audit_syscall_exit+0x25f/0x2c0
sysret_audit+0x17/0x21
Fix it by performing the comparison a single time.
Reported-by: Dave Jones <davej@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Kees Cook [Fri, 11 Jan 2013 22:32:07 +0000 (14:32 -0800)]
audit: catch possible NULL audit buffers
It's possible for audit_log_start() to return NULL. Handle it in the
various callers.
Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Cc: Jeff Layton <jlayton@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Julien Tinnes <jln@google.com> Cc: Will Drewry <wad@google.com> Cc: Steve Grubb <sgrubb@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Kees Cook [Fri, 11 Jan 2013 22:32:05 +0000 (14:32 -0800)]
audit: create explicit AUDIT_SECCOMP event type
The seccomp path was using AUDIT_ANOM_ABEND from when seccomp mode 1
could only kill a process. While we still want to make sure an audit
record is forced on a kill, this should use a separate record type since
seccomp mode 2 introduces other behaviors.
In the case of "handled" behaviors (process wasn't killed), only emit a
record if the process is under inspection. This change also fixes
userspace examination of seccomp audit events, since it was considered
malformed due to missing fields of the AUDIT_ANOM_ABEND event type.
Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Cc: Jeff Layton <jlayton@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Julien Tinnes <jln@google.com> Acked-by: Will Drewry <wad@chromium.org> Acked-by: Steve Grubb <sgrubb@redhat.com> Cc: Andrea Arcangeli <aarcange@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>
Alexander Beregalov and Alex Xu reported similar bugs and Hillf Danton
identified that commit 5a505085f043 ("mm/rmap: Convert the struct
anon_vma::mutex to an rwsem") and commit 4fc3f1d66b1e ("mm/rmap,
migration: Make rmap_walk_anon() and try_to_unmap_anon() more scalable")
were likely the problem. Reverting these commits was reported to solve
the problem for Alexander.
Despite the reason for these commits, NUMA balancing is not the direct
source of the problem. split_huge_page() expects the anon_vma lock to
be exclusive to serialise the whole split operation. Ordinarily it is
expected that the anon_vma lock would only be required when updating the
avcs but THP also uses the anon_vma rwsem for collapse and split
operations where the page lock or compound lock cannot be used (as the
page is changing from base to THP or vice versa) and the page table
locks are insufficient.
This patch takes the anon_vma lock for write to serialise against parallel
split_huge_page as THP expected before the conversion to rwsem.
Reported-and-tested-by: Zhouping Liu <zliu@redhat.com> Reported-by: Alexander Beregalov <a.beregalov@gmail.com> Reported-by: Alex Xu <alex_y_xu@yahoo.ca> Signed-off-by: Mel Gorman <mgorman@suse.de> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
which is incomplete, and causes the false positive report from lockdep
below.
Annotate the fact that mmap_sem is used as an outter lock to serialize
taking of all the anon_vma rwsems at once no matter the order, using the
down_write_nest_lock() primitive.
This patch fixes this lockdep report:
=============================================
[ INFO: possible recursive locking detected ] 3.8.0-rc2-00036-g5f73896 #171 Not tainted
---------------------------------------------
qemu-kvm/2315 is trying to acquire lock:
(&anon_vma->rwsem){+.+...}, at: mm_take_all_locks+0x149/0x1b0
but task is already holding lock:
(&anon_vma->rwsem){+.+...}, at: mm_take_all_locks+0x149/0x1b0
other info that might help us debug this:
Possible unsafe locking scenario:
Jiri Kosina [Fri, 11 Jan 2013 22:31:56 +0000 (14:31 -0800)]
lockdep, rwsem: provide down_write_nest_lock()
down_write_nest_lock() provides a means to annotate locking scenario
where an outer lock is guaranteed to serialize the order nested locks
are being acquired.
This is analogoue to already existing mutex_lock_nest_lock() and
spin_lock_nest_lock().
Max Filippov [Fri, 11 Jan 2013 22:31:52 +0000 (14:31 -0800)]
mm: bootmem: fix free_all_bootmem_core() with odd bitmap alignment
Currently free_all_bootmem_core ignores that node_min_pfn may be not
multiple of BITS_PER_LONG. Eg commit 6dccdcbe2c3e ("mm: bootmem: fix
checking the bitmap when finally freeing bootmem") shifts vec by lower
bits of start instead of lower bits of idx. Also
if (IS_ALIGNED(start, BITS_PER_LONG) && vec == ~0UL)
assumes that vec bit 0 corresponds to start pfn, which is only true when
node_min_pfn is a multiple of BITS_PER_LONG. Also loop in the else
clause can double-free pages (e.g. with node_min_pfn == start == 1,
map[0] == ~0 on 32-bit machine page 32 will be double-freed).
This bug causes the following message during xtensa kernel boot:
bootmem::free_all_bootmem_core nid=0 start=1 end=8000
BUG: Bad page state in process swapper pfn:00001
page:d04bd020 count:0 mapcount:-127 mapping: (null) index:0x2
page flags: 0x0()
Call Trace:
bad_page+0x8c/0x9c
free_pages_prepare+0x5e/0x88
free_hot_cold_page+0xc/0xa0
__free_pages+0x24/0x38
__free_pages_bootmem+0x54/0x56
free_all_bootmem_core$part$11+0xeb/0x138
free_all_bootmem+0x46/0x58
mem_init+0x25/0xa4
start_kernel+0x11e/0x25c
should_never_return+0x0/0x3be7
The fix is the following:
- always align vec so that its bit 0 corresponds to start
- provide BITS_PER_LONG bits in vec, if those bits are available in the
map
- don't free pages past next start position in the else clause.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Cc: Gavin Shan <shangw@linux.vnet.ibm.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Tejun Heo <tj@kernel.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Joonsoo Kim <js1304@gmail.com> Cc: Prasad Koya <prasad.koya@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>
Laura Abbott [Fri, 11 Jan 2013 22:31:51 +0000 (14:31 -0800)]
mm: use aligned zone start for pfn_to_bitidx calculation
The current calculation in pfn_to_bitidx assumes that (pfn -
zone->zone_start_pfn) >> pageblock_order will return the same bit for
all pfn in a pageblock. If zone_start_pfn is not aligned to
pageblock_nr_pages, this may not always be correct.
Consider the following with pageblock order = 10, zone start 2MB:
This means that calling {get,set}_pageblock_migratetype on a single page
will not set the migratetype for the full block. Fix this by rounding
down zone_start_pfn when doing the bitidx calculation.
For our use case, the effects of this bug were mostly tied to the fact
that CMA allocations would either take a long time or fail to happen.
Depending on the driver using CMA, this could result in anything from
visual glitches to application failures.
Signed-off-by: Laura Abbott <lauraa@codeaurora.org> Acked-by: Mel Gorman <mgorman@suse.de> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Xi Wang [Fri, 11 Jan 2013 22:31:48 +0000 (14:31 -0800)]
fs/exec.c: work around icc miscompilation
The tricky problem is this check:
if (i++ >= max)
icc (mis)optimizes this check as:
if (++i > max)
The check now becomes a no-op since max is MAX_ARG_STRINGS (0x7FFFFFFF).
This is "allowed" by the C standard, assuming i++ never overflows,
because signed integer overflow is undefined behavior. This
optimization effectively reverts the previous commit 362e6663ef23
("exec.c, compat.c: fix count(), compat_count() bounds checking") that
tries to fix the check.
This patch simply moves ++ after the check.
Signed-off-by: Xi Wang <xi.wang@gmail.com> Cc: Jason Baron <jbaron@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Lin Feng [Fri, 11 Jan 2013 22:31:44 +0000 (14:31 -0800)]
mm: memblock: fix wrong memmove size in memblock_merge_regions()
The memmove span covers from (next+1) to the end of the array, and the
index of next is (i+1), so the index of (next+1) is (i+2). So the size
of remaining array elements is (type->cnt - (i + 2)).
Since the remaining elements of the memblock array are move forward by
one element and there is only one additional element caused by this bug.
So there won't be any write overflow here but read overflow. It may
read one more element out of the array address if the array happens to
be full. Commonly it doesn't matter at all but if the array happens to
be located at the end a memblock, it may cause a invalid read operation
for the physical address doesn't exist.
There are 2 *happens to be* here, so I think the probability is quite
low, I don't know if any guy is haunted by this bug before.
Mostly I think it's user-invisible.
Signed-off-by: Lin Feng <linfeng@cn.fujitsu.com> Acked-by: Tejun Heo <tj@kernel.org> Reviewed-by: Wanpeng Li <liwanp@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Maxime Ripard [Fri, 11 Jan 2013 22:31:43 +0000 (14:31 -0800)]
drivers/video/ssd1307fb.c: fix bit order bug in the byte translation function
This was leading to a strange behaviour when using the fbcon driver on
top of this one: the letters were in the right order, but each letter
had a vertical symmetry.
This was because the addressing was right for the byte, but the
addressing of each individual bit was inverted.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Brian Lilly <brian@crystalfontz.com> Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: Thomas Petazzoni <thomas@free-electrons.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mel Gorman [Fri, 11 Jan 2013 22:31:40 +0000 (14:31 -0800)]
mm: migrate: check page_count of THP before migrating
Hugh Dickins pointed out that migrate_misplaced_transhuge_page() does
not check page_count before migrating like base page migration and
khugepage. He could not see why this was safe and he is right.
The potential impact of the bug is avoided due to the limitations of
NUMA balancing. The page_mapcount() check ensures that only a single
address space is using this page and as THPs are typically private it
should not be possible for another address space to fault it in
parallel. If the address space has one associated task then it's
difficult to have both a GUP pin and be referencing the page at the same
time. If there are multiple tasks then a buggy scenario requires that
another thread be accessing the page while the direct IO is in flight.
This is dodgy behaviour as there is a possibility of corruption with or
without THP migration. It would be
While we happen to be safe for the most part it is shoddy to depend on
such "safety" so this patch checks the page count similar to anonymous
pages. Note that this does not mean that the page_mapcount() check can
go away. If we were to remove the page_mapcount() check the the THP
would have to be unmapped from all referencing PTEs, replaced with
migration PTEs and restored properly afterwards.
WARNING: drivers/rtc/rtc-da9055.o(.text+0xa71): Section mismatch in reference from the function da9055_rtc_probe() to the function .init.text:da9055_rtc_device_init()
Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Decotigny [Fri, 11 Jan 2013 22:31:36 +0000 (14:31 -0800)]
lib: cpu_rmap: avoid flushing all workqueues
In some cases, free_irq_cpu_rmap() is called while holding a lock (eg
rtnl). This can lead to deadlocks, because it invokes
flush_scheduled_work() which ends up waiting for whole system workqueue
to flush, but some pending works might try to acquire the lock we are
already holding.
This commit uses reference-counting to replace
irq_run_affinity_notifiers(). It also removes
irq_run_affinity_notifiers() altogether.
[akpm@linux-foundation.org: eliminate free_cpu_rmap, rename cpu_rmap_reclaim() to cpu_rmap_release(), propagate kref_put() retval from cpu_rmap_put()] Signed-off-by: David Decotigny <decot@googlers.com> Reviewed-by: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Or Gerlitz <ogerlitz@mellanox.com> Acked-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Oliver Neukum [Thu, 29 Nov 2012 14:05:57 +0000 (15:05 +0100)]
USB: hub: handle claim of enabled remote wakeup after reset
Some touchscreens have buggy firmware which claims
remote wakeup to be enabled after a reset. They nevertheless
crash if the feature is cleared by the host.
Add a check for reset resume before checking for
an enabled remote wakeup feature. On compliant
devices the feature must be cleared after a reset anyway.
Signed-off-by: Oliver Neukum <oneukum@suse.de> Acked-by: Alan Stern <stern@rowland.harvard.edu> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linus Torvalds [Fri, 11 Jan 2013 20:09:04 +0000 (12:09 -0800)]
Merge tag 'nfs-for-3.8-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfix from Trond Myklebust:
- Fix a socket lock leak in net/sunrpc/xprt.c
* tag 'nfs-for-3.8-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
SUNRPC: Ensure we release the socket write lock if the rpc_task exits early
Fabio Estevam [Mon, 10 Dec 2012 02:58:36 +0000 (00:58 -0200)]
usb: imx21-hcd: Include missing linux/module.h
Include <linux/module.h>, so that the following errors are fixed:
drivers/usb/host/imx21-hcd.c:1929:20: error: expected declaration specifiers or '...' before string constant
drivers/usb/host/imx21-hcd.c:1930:15: error: expected declaration specifiers or '...' before string constant
drivers/usb/host/imx21-hcd.c:1931:16: error: expected declaration specifiers or '...' before string constant
drivers/usb/host/imx21-hcd.c:1932:14: error: expected declaration specifiers or '...' before string constant
Piotr Haber [Thu, 10 Jan 2013 10:20:48 +0000 (11:20 +0100)]
brcmsmac: increase timer reference count for new timers only
On hardware reintialization reference count of
already existing timers would be increased again.
This leads to problems on module unloading.
Cc: stable@vger.kernel.org Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> Reviewed-by: Hante Meuleman <meuleman@broadcom.com> Reviewed-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: Piotr Haber <phaber@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
projects / karo-tx-linux.git / log