tcf_act_police_init() can fail after the idr has been successfully
reserved (e.g., qdisc_get_rtab() may return NULL). When this happens,
subsequent attempts to configure a police rule using the same idr value
systematiclly fail with -ENOSPC:
# tc action add action police rate 1000 burst 1000 drop index 100
RTNETLINK answers: Cannot allocate memory
We have an error talking to the kernel
# tc action add action police rate 1000 burst 1000 drop index 100
RTNETLINK answers: No space left on device
We have an error talking to the kernel
# tc action add action police rate 1000 burst 1000 drop index 100
RTNETLINK answers: No space left on device
...
Fix this in the error path of tcf_act_police_init(), calling
tcf_idr_release() in place of tcf_idr_cleanup().
Fixes: 65a206c01e ("net/sched: Change act_api and act_xxx modules to use IDR")
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
if the kernel fails to duplicate 'sdata', creation of a new action fails
with -ENOMEM. However, subsequent attempts to install the same action
using the same value of 'index' systematically fail with -ENOSPC, and
that value of 'index' will no more be usable by act_simple, until rmmod /
insmod of act_simple.ko is done:
# tc actions add action simple sdata hello index 100
# tc actions list action simple
action order 0: Simple <hello>
index 100 ref 1 bind 0
# tc actions flush action simple
# tc actions add action simple sdata hello index 100
RTNETLINK answers: Cannot allocate memory
We have an error talking to the kernel
# tc actions flush action simple
# tc actions add action simple sdata hello index 100
RTNETLINK answers: No space left on device
We have an error talking to the kernel
# tc actions add action simple sdata hello index 100
RTNETLINK answers: No space left on device
We have an error talking to the kernel
...
Fix this in the error path of tcf_simp_init(), calling tcf_idr_release()
in place of tcf_idr_cleanup().
Fixes: 65a206c01e ("net/sched: Change act_api and act_xxx modules to use IDR")
Suggested-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
when the following command sequence is entered
# tc action add action bpf bytecode '4,40 0 0 12,31 0 1 2048,6 0 0 262144,6 0 0 0' index 100
RTNETLINK answers: Invalid argument
We have an error talking to the kernel
# tc action add action bpf bytecode '4,40 0 0 12,21 0 1 2048,6 0 0 262144,6 0 0 0' index 100
RTNETLINK answers: No space left on device
We have an error talking to the kernel
act_bpf correctly refuses to install the first TC rule, because 31 is not
a valid instruction. However, it refuses to install the second TC rule,
even if the BPF code is correct. Furthermore, it's no more possible to
install any other rule having the same value of 'index' until act_bpf
module is unloaded/inserted again. After the idr has been reserved, call
tcf_idr_release() instead of tcf_idr_cleanup(), to fix this issue.
Fixes: 65a206c01e ("net/sched: Change act_api and act_xxx modules to use IDR")
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Trivial fix to spelling mistakes in DP_ERR error message text and
comments
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Trivial fix to spelling mistake in BNX2X_ERR error message text
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Sudarsana Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Enable syscon to use it for the RCU MFD on Amazon SE as well.
The Amazon SE also has similar reset controller system as Danube and
XWAY and use their drivers mostly. As these drivers now need syscon also
activate the syscon subsystem for for Amazon SE.
Fixes: 2b6639d4c7 ("MIPS: lantiq: Enable MFD_SYSCON to be able to use it for the RCU MFD")
Signed-off-by: Mathias Kresin <dev@kresin.me>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 4.14+
Patchwork: https://patchwork.linux-mips.org/patch/18817/
Signed-off-by: James Hogan <jhogan@kernel.org>
On Danube and AR9 the USB core is connected though a AHB bus to the main
system cross bar, hence we need to enable the gating clock of the AHB
Bus as well to make the USB controller work.
Fixes: dea54fbad3 ("phy: Add an USB PHY driver for the Lantiq SoCs using the RCU module")
Signed-off-by: Mathias Kresin <dev@kresin.me>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 4.14+
Patchwork: https://patchwork.linux-mips.org/patch/18814/
Signed-off-by: James Hogan <jhogan@kernel.org>
On Danube the USB0 controller registers are at 1e101000 and the USB0 PHY
register is at 1f203018 similar to all other lantiq SoCs. Activate the
USB controller gating clock thorough the USB controller driver and not
the PHY.
This fixes a problem introduced in a previous commit.
Fixes: dea54fbad3 ("phy: Add an USB PHY driver for the Lantiq SoCs using the RCU module")
Signed-off-by: Mathias Kresin <dev@kresin.me>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 4.14+
Patchwork: https://patchwork.linux-mips.org/patch/18816/
Signed-off-by: James Hogan <jhogan@kernel.org>
Similar to other region attributes, do not emit the persistence_domain
attribute if its contents are empty.
Fixes: 96c3a23905 ("libnvdimm: expose platform persistence attr...")
Cc: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Once the FW is transitioned to error, FLUSH cqes can be received.
We want the driver to be aware of the fact that QP is already in error.
Without this fix, a user may see false error messages in the dmesg log,
mentioning that a FLUSH cqe was received while QP is not in error state.
Fixes: cecbcddf ("qedr: Add support for QP verbs")
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Return code wasn't set properly when CNQ allocation failed.
This only affect error message logging, currently user will
receive an error message that says the qedr driver load failed
with rc '0', instead of ENOMEM
Fixes: ec72fce4 ("qedr: Add support for RoCE HW init")
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
QPs that were configured with ack timeout value lower than 1
msec will not implement re-transmission timeout.
This means that if a packet / ACK were dropped, the QP
will not retransmit this packet.
This can lead to an application hang.
Fixes: cecbcddf6 ("qedr: Add support for QP verbs")
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
The option size check is using optval instead of optlen
causing the set option call to fail. Use the correct
field, optlen, for size check.
Fixes: 6a21dfc0d0 ("RDMA/ucma: Limit possible option size")
Signed-off-by: Chien Tin Tung <chien.tin.tung@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
In case we failed to create UMR resources, mark them as invalid so we
won't try to destroy them on the unwind path.
Add the relevant checks to destroy_umrc_res(), this is done for the
unlikely event ib_register_device() or create_umr_res() err out and we
try to destroy invalid objects.
Fixes: 42cea83f95 ("IB/mlx5: Fix cleanup order on unload")
Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Daniel Borkmann says:
====================
pull-request: bpf 2018-03-21
The following pull-request contains BPF updates for your *net* tree.
The main changes are:
1) Follow-up fix to the fault injection framework to prevent jump
optimization on the kprobe by installing a dummy post-handler,
from Masami.
2) Drop bpf_perf_prog_read_value helper from tracepoint type programs
which was mistakenly added there and would otherwise crash due to
wrong input context, from Yonghong.
3) Fix a crash in BPF fs when compiled with clang. Code appears to
be fine just that clang tries to overly aggressive optimize in
non C conform ways, therefore fix the kernel's Makefile to
generally prevent such issues, from Daniel.
4) Skip unnecessary capability checks in bpf syscall, which is otherwise
triggering unnecessary security hooks on capability checking and
causing false alarms on unprivileged processes trying to access
CAP_SYS_ADMIN restricted infra, from Chenbo.
5) Fix the test_bpf.ko module when CONFIG_BPF_JIT_ALWAYS_ON is set
with regards to a test case that is really just supposed to fail
on x8_64 JIT but not others, from Thadeu.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
We are still using custom SRAM code for some SoCs and are not marking
the PM code mapped to SRAM as read-only and executable after we're
done. With CONFIG_DEBUG_WX=y, we will get "Found insecure W+X mapping
at address" warning.
Let's fix this issue the same way as commit 728bbe75c8 ("misc: sram:
Introduce support code for protect-exec sram type") is doing for
drivers/misc/sram-exec.c.
On omap3, we need to restore SRAM when returning from off mode after
idle, so init time configuration is not enough.
And as we no longer have users for omap_sram_push_address() we can
make it static while at it.
Note that eventually we should be using sram-exec.c for all SoCs.
Cc: stable@vger.kernel.org # v4.12+
Cc: Dave Gerlach <d-gerlach@ti.com>
Reported-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
If the GPU is stuck waiting for an event or for a semaphore, we need to
reset the GPU in order to recover. We have to tell the reset routine
which engines we want reset, but we were still using the old interface
and declaring it as "not-fatal".
Fixes: 14b730fcb8 ("drm/i915/tdr: Prepare error handler to accept mask of hung engines")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Michel Thierry <michel.thierry@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180320100449.1360-1-chris@chris-wilson.co.uk
(cherry picked from commit ca98317b89)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
When switching mac80211 to use QoS NDP, it turned out that
ath9k_htc is somehow broken by this, e.g. see
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891060.
Fix this by using the new mac80211 flag to go back to the
old, incorrect, behaviour for this driver.
Fixes: 7b6ddeaf27 ("mac80211: use QoS NDP for AP probing")
Reported-by: Ben Caradoc-Davies <ben@transient.nz>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Set the wmediumd to the net's wmediumd when the radio gets created.
Radios created after HWSIM_CMD_REGISTER don't currently get their
data->wmediumd set and the userspace would need to reconnect to
netlink to be able to call HWSIM_CMD_REGISTER again.
Alternatively I think data->netgroup and data->wmedium could be
replaced with a pointer to hwsim_net.
Signed-off-by: Andrew Zaborowski <andrew.zaborowski@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Zero is a valid IRQ number and is being used on some CHT tablets. Stop
treating it as an error.
Reported-by: Luke Ross <luke@lukeross.name>
Fixes: 1b7ba57ecc ("mmc: sdhci-acpi: Handle return value of platform_get_irq")
Cc: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Commit 7b6ddeaf27 ("mac80211: use QoS NDP for AP probing") added an
argument qos_ok to ieee80211_nullfunc_get to support QoS NDP. Despite
the claim in the commit log "Change all the drivers to *not* allow
QoS NDP for now, even though it looks like most of them should be OK
with that", this commit enables QoS NDP in response to beacons (see
change to mlme.c:ieee80211_send_nullfunc), causing ath9k_htc to lose
IP connectivity. See:
https://patchwork.kernel.org/patch/10241109/https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891060
Introduce a hardware flag to allow such buggy drivers to override the
correct default behaviour of mac80211 of sending QoS NDP packets.
Signed-off-by: Ben Caradoc-Davies <ben@transient.nz>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When validating legacy surfaces, the backup bo might be destroyed at
surface validate time. However, the kms resource validation code may have
the bo reserved, so we will destroy a locked mutex. While there shouldn't
be any other users of that mutex when it is destroyed, it causes a lock
leak and thus throws a lockdep error.
Fix this by having the kms resource validation code hold a reference to
the bo while we have it reserved. We do this by introducing a validation
context which might come in handy when the kms code is extended to validate
multiple resources or buffers.
Cc: <stable@vger.kernel.org>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
When we are running without fbdev, transitioning from the login screen to
X or gnome-shell/wayland will cause a vt switch and the driver will disable
svga mode, losing all modesetting resources. However, the kms atomic state
does not reflect that and may think that a crtc is still turned on, which
will cause device errors when we try to bind an fb to the crtc, and the
screen will remain black.
Fix this by turning off all kms resources before disabling svga mode.
Cc: <stable@vger.kernel.org>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
We've observed too long probe time with Coffee Lake (CFL) machines,
and the likely cause is some communication problem between the
HD-audio controller and the codec chips. While the controller expects
an IRQ wakeup for each codec response, it seems sometimes missing, and
it takes one second for the controller driver to time out and read the
response in the polling mode.
Although we aren't sure about the real culprit yet, in this patch, we
put a workaround by forcing the polling mode as default for CFL
machines; the polling mode itself isn't too heavy, and much better
than other workarounds initially suggested (e.g. disabling
power-save), at least.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=199007
Fixes: e79b0006c4 ("ALSA: hda - Add Coffelake PCI ID")
Reported-and-tested-by: Hui Wang <hui.wang@canonical.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Due to missing information in Hardware manual, current
implementation doesn't read ECCSTAT0 and ECCSTAT1 registers
for IFC 2.0.
Add support to read ECCSTAT0 and ECCSTAT1 registers during
ecccheck for IFC 2.0.
Fixes: 656441478e ("mtd: nand: ifc: Fix location of eccstat registers for IFC V1.0")
Cc: stable@vger.kernel.org # v3.18+
Signed-off-by: Jagdish Gediya <jagdish.gediya@nxp.com>
Reviewed-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
In order to make sure compiler flag detection for ARM works
correctly the no-integrated-as flags need to be set before
including the arch specific Makefile.
Fixes: cfe17c9bbe ("kbuild: move cc-option and cc-disable-warning after incl. arch Makefile")
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Number of ECC status registers i.e. (ECCSTATx) has been increased in IFC
version 2.0.0 due to increase in SRAM size. This is causing eccstat
array to over flow.
So, replace eccstat array with u32 variable to make it fail-safe and
independent of number of ECC status registers or SRAM size.
Fixes: bccb06c353 ("mtd: nand: ifc: update bufnum mask for ver >= 2.0.0")
Cc: stable@vger.kernel.org # 3.18+
Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Signed-off-by: Jagdish Gediya <jagdish.gediya@nxp.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Some filesystems have timestamps with coarse precision that may allow
for a recently built object file to have the same timestamp as the
updated time on one of its dependency files. When that happens, the
object file doesn't get rebuilt as it should.
This is especially the case on filesystems that don't have sub-second
time precision, such as ext3 or Ext4 with 128B inodes.
Let's prevent that by making sure updated dependency files have a newer
timestamp than the first file we created (i.e. autoksyms.h.tmpnew).
Reported-by: Thomas Lindroth <thomas.lindroth@gmail.com>
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Thomas Lindroth <thomas.lindroth@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
As per the IFC hardware manual, Most significant 2 bytes in
nand_fsr register are the outcome of NAND READ STATUS command.
So status value need to be shifted and aligned as per the nand
framework requirement.
Fixes: 82771882d9 ("NAND Machine support for Integrated Flash Controller")
Cc: stable@vger.kernel.org # v3.18+
Signed-off-by: Jagdish Gediya <jagdish.gediya@nxp.com>
Reviewed-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
DC takes channel count to mean the actual count. cea_sad's channels
represent it as number of channels - 1.
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This is still a leftover from early atomic brinup days.
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Switch the order of parameters being set for depth
and mode of truncation, as it previously was not correct
Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
The truncation isn't being programmed if the truncation
depth is set to 2, it causes an issue with dce11.2 asic
using 6bit eDP panel. It required to truncate 12:10 in order to
perform spatial dither 10:6.
This change will allow 12:10 truncation to be enabled.
Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
. '#sound-dai-cells' property is required to describe link between
the HDMI IP block and the SoC's audio subsystem and Exynos SoC device
tree files already have this property but we missed its description.
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Merge tag 'exynos-drm-fixes-for-v4.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes
Add a device tree property description for hdmi device node
. '#sound-dai-cells' property is required to describe link between
the HDMI IP block and the SoC's audio subsystem and Exynos SoC device
tree files already have this property but we missed its description.
* tag 'exynos-drm-fixes-for-v4.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
dt-bindings: exynos: Document #sound-dai-cells property of the HDMI node
This contains two small fixes for the alpha blending support that was
merged into v4.16-rc1 and a fix for connector reference leaks caused by
the fact that display pipelines are no longer automatically disabled if
the framebuffer is removed.
Furthermore this contains a fix for a crash on IOMMU detach at driver
unbind time and a regulator enable/disable unbalance fix.
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Merge tag 'drm/tegra/for-4.16-rc7-fixes' of git://anongit.freedesktop.org/tegra/linux into drm-fixes
drm/tegra: Fixes for v4.16-rc7
This contains two small fixes for the alpha blending support that was
merged into v4.16-rc1 and a fix for connector reference leaks caused by
the fact that display pipelines are no longer automatically disabled if
the framebuffer is removed.
Furthermore this contains a fix for a crash on IOMMU detach at driver
unbind time and a regulator enable/disable unbalance fix.
* tag 'drm/tegra/for-4.16-rc7-fixes' of git://anongit.freedesktop.org/tegra/linux:
drm/tegra: Shutdown on driver unbind
drm/tegra: dsi: Don't disable regulator on ->exit()
drm/tegra: dc: Detach IOMMU group from domain only once
drm/tegra: plane: Correct legacy blending
drm/tegra: plane: Fix RGB565 format on older Tegra
Normally I send this earlier than now but real life got in the way.
Things are back to normal now.
There's the normal set of SoC driver fixes: i.MX boot warning, TI
display clks, allwinner clk ops being wrong (fun), driver probe
badness on error paths, correctness fix for the new aspeed driver,
and even a fix for a race condition in the bcm2835 clk driver.
At the core framework level we also got some fixes for the clk
phase API caching at the wrong time, better handling of the enabled
state of orphan clks, and a fix for a newly introduced bug in how we
handle rate calculations for pass-through clks.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"A late collection of fixes for regressions seen this release cycle.
Normally I send this earlier than now but real life got in the way.
Things are back to normal now.
There's the normal set of SoC driver fixes: i.MX boot warning, TI
display clks, allwinner clk ops being wrong (fun), driver probe
badness on error paths, correctness fix for the new aspeed driver, and
even a fix for a race condition in the bcm2835 clk driver.
At the core framework level we also got some fixes for the clk phase
API caching at the wrong time, better handling of the enabled state of
orphan clks, and a fix for a newly introduced bug in how we handle
rate calculations for pass-through clks"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: bcm2835: Protect sections updating shared registers
clk: bcm2835: Fix ana->maskX definitions
clk: aspeed: Prevent reset if clock is enabled
clk: aspeed: Fix is_enabled for certain clocks
clk: qcom: msm8916: Fix return value check in qcom_apcs_msm8916_clk_probe()
clk: hisilicon: hi3660：Fix potential NULL dereference in hi3660_stub_clk_probe()
clk: fix determine rate error with pass-through clock
clk: migrate the count of orphaned clocks at init
clk: update cached phase to respect the fact when setting phase
clk: ti: am43xx: add set-rate-parent support for display clkctrl clock
clk: ti: am33xx: add set-rate-parent support for display clkctrl clock
clk: ti: clkctrl: add support for CLK_SET_RATE_PARENT flag
clk: imx51-imx53: Fix UART4/5 registration on i.MX50 and i.MX53
clk: sunxi-ng: a31: Fix CLK_OUT_* clock ops
Prasad reported that he has seen crashes in BPF subsystem with netd
on Android with arm64 in the form of (note, the taint is unrelated):
[ 4134.721483] Unable to handle kernel paging request at virtual address 800000001
[ 4134.820925] Mem abort info:
[ 4134.901283] Exception class = DABT (current EL), IL = 32 bits
[ 4135.016736] SET = 0, FnV = 0
[ 4135.119820] EA = 0, S1PTW = 0
[ 4135.201431] Data abort info:
[ 4135.301388] ISV = 0, ISS = 0x00000021
[ 4135.359599] CM = 0, WnR = 0
[ 4135.470873] user pgtable: 4k pages, 39-bit VAs, pgd = ffffffe39b946000
[ 4135.499757] [0000000800000001] *pgd=0000000000000000, *pud=0000000000000000
[ 4135.660725] Internal error: Oops: 96000021 [#1] PREEMPT SMP
[ 4135.674610] Modules linked in:
[ 4135.682883] CPU: 5 PID: 1260 Comm: netd Tainted: G S W 4.14.19+ #1
[ 4135.716188] task: ffffffe39f4aa380 task.stack: ffffff801d4e0000
[ 4135.731599] PC is at bpf_prog_add+0x20/0x68
[ 4135.741746] LR is at bpf_prog_inc+0x20/0x2c
[ 4135.751788] pc : [<ffffff94ab7ad584>] lr : [<ffffff94ab7ad638>] pstate: 60400145
[ 4135.769062] sp : ffffff801d4e3ce0
[...]
[ 4136.258315] Process netd (pid: 1260, stack limit = 0xffffff801d4e0000)
[ 4136.273746] Call trace:
[...]
[ 4136.442494] 3ca0: ffffff94ab7ad584 0000000060400145 ffffffe3a01bf8f8 0000000000000006
[ 4136.460936] 3cc0: 0000008000000000 ffffff94ab844204 ffffff801d4e3cf0 ffffff94ab7ad584
[ 4136.479241] [<ffffff94ab7ad584>] bpf_prog_add+0x20/0x68
[ 4136.491767] [<ffffff94ab7ad638>] bpf_prog_inc+0x20/0x2c
[ 4136.504536] [<ffffff94ab7b5d08>] bpf_obj_get_user+0x204/0x22c
[ 4136.518746] [<ffffff94ab7ade68>] SyS_bpf+0x5a8/0x1a88
Android's netd was basically pinning the uid cookie BPF map in BPF
fs (/sys/fs/bpf/traffic_cookie_uid_map) and later on retrieving it
again resulting in above panic. Issue is that the map was wrongly
identified as a prog! Above kernel was compiled with clang 4.0,
and it turns out that clang decided to merge the bpf_prog_iops and
bpf_map_iops into a single memory location, such that the two i_ops
could then not be distinguished anymore.
Reason for this miscompilation is that clang has the more aggressive
-fmerge-all-constants enabled by default. In fact, clang source code
has a comment about it in lib/AST/ExprConstant.cpp on why it is okay
to do so:
Pointers with different bases cannot represent the same object.
(Note that clang defaults to -fmerge-all-constants, which can
lead to inconsistent results for comparisons involving the address
of a constant; this generally doesn't matter in practice.)
The issue never appeared with gcc however, since gcc does not enable
-fmerge-all-constants by default and even *explicitly* states in
it's option description that using this flag results in non-conforming
behavior, quote from man gcc:
Languages like C or C++ require each variable, including multiple
instances of the same variable in recursive calls, to have distinct
locations, so using this option results in non-conforming behavior.
There are also various clang bug reports open on that matter [1],
where clang developers acknowledge the non-conforming behavior,
and refer to disabling it with -fno-merge-all-constants. But even
if this gets fixed in clang today, there are already users out there
that triggered this. Thus, fix this issue by explicitly adding
-fno-merge-all-constants to the kernel's Makefile to generically
disable this optimization, since potentially other places in the
kernel could subtly break as well.
Note, there is also a flag called -fmerge-constants (not supported
by clang), which is more conservative and only applies to strings
and it's enabled in gcc's -O/-O2/-O3/-Os optimization levels. In
gcc's code, the two flags -fmerge-{all-,}constants share the same
variable internally, so when disabling it via -fno-merge-all-constants,
then we really don't merge any const data (e.g. strings), and text
size increases with gcc (14,927,214 -> 14,942,646 for vmlinux.o).
$ gcc -fverbose-asm -O2 foo.c -S -o foo.S
-> foo.S lists -fmerge-constants under options enabled
$ gcc -fverbose-asm -O2 -fno-merge-all-constants foo.c -S -o foo.S
-> foo.S doesn't list -fmerge-constants under options enabled
$ gcc -fverbose-asm -O2 -fno-merge-all-constants -fmerge-constants foo.c -S -o foo.S
-> foo.S lists -fmerge-constants under options enabled
Thus, as a workaround we need to set both -fno-merge-all-constants
*and* -fmerge-constants in the Makefile in order for text size to
stay as is.
[1] https://bugs.llvm.org/show_bug.cgi?id=18538
Reported-by: Prasad Sodagudi <psodagud@codeaurora.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Chenbo Feng <fengc@google.com>
Cc: Richard Smith <richard-llvm@metafoo.co.uk>
Cc: Chandler Carruth <chandlerc@gmail.com>
Cc: linux-kernel@vger.kernel.org
Tested-by: Prasad Sodagudi <psodagud@codeaurora.org>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
- Many bug fixes related to syzkaller from Leon Romanovsky.
These are still for the mlx driver and ucma interface.
- Fix a situation with port reuse for iWarp, discovered during scale-up
testing
- Bug fixes for the profile and restrack patches accepted during this merge
window
- Compile warning cleanups from Arnd, this is apparently the last warning
to make 32 bit builds quite.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma fixes from Jason Gunthorpe:
"Not much exciting here, almost entirely syzkaller fixes.
This is going to be on ongoing theme for some time, I think. Both
Google and Mellanox are now running syzkaller on different parts of
the user API.
Summary:
- Many bug fixes related to syzkaller from Leon Romanovsky. These are
still for the mlx driver and ucma interface.
- Fix a situation with port reuse for iWarp, discovered during
scale-up testing
- Bug fixes for the profile and restrack patches accepted during this
merge window
- Compile warning cleanups from Arnd, this is apparently the last
warning to make 32 bit builds quiet"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/ucma: Ensure that CM_ID exists prior to access it
RDMA/verbs: Remove restrack entry from XRCD structure
RDMA/ucma: Fix use-after-free access in ucma_close
RDMA/ucma: Check AF family prior resolving address
infiniband: bnxt_re: use BIT_ULL() for 64-bit bit masks
infiniband: qplib_fp: fix pointer cast
IB/mlx5: Fix cleanup order on unload
RDMA/ucma: Don't allow join attempts for unsupported AF family
RDMA/ucma: Fix access to non-initialized CM_ID object
RDMA/core: Do not use invalid destination in determining port reuse
RDMA/mlx5: Fix crash while accessing garbage pointer and freed memory
IB/mlx5: Fix integer overflows in mlx5_ib_create_srq
IB/mlx5: Fix out-of-bounds read in create_raw_packet_qp_rq
One driver patch (qla2xxx) which fixes a problem caused by an existing
regression fix (FCP discovery is failing) and one generic fix to a
longstanding bug in libsas that causes I/O eventually to hang to the
device in the face of ATA error recovery.
Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
- one driver patch (qla2xxx) which fixes a problem caused by an
existing regression fix (FCP discovery is failing)
- one generic fix to a longstanding bug in libsas that causes I/O
eventually to hang to the device in the face of ATA error recovery.
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: qla2xxx: Remove FC_NO_LOOP_ID for FCP and FC-NVMe Discovery
scsi: libsas: defer ata device eh commands to libata
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Merge tag 'nfsd-4.16-1' of git://linux-nfs.org/~bfields/linux
Pull nfsd fix from Bruce Fields:
"Just one fix for an occasional panic from Jeff Layton"
* tag 'nfsd-4.16-1' of git://linux-nfs.org/~bfields/linux:
nfsd: remove blocked locks on client teardown
The current check statement in BPF syscall will do a capability check
for CAP_SYS_ADMIN before checking sysctl_unprivileged_bpf_disabled. This
code path will trigger unnecessary security hooks on capability checking
and cause false alarms on unprivileged process trying to get CAP_SYS_ADMIN
access. This can be resolved by simply switch the order of the statement
and CAP_SYS_ADMIN is not required anyway if unprivileged bpf syscall is
allowed.
Signed-off-by: Chenbo Feng <fengc@google.com>
Acked-by: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Commit 4bebdc7a85 ("bpf: add helper bpf_perf_prog_read_value")
added helper bpf_perf_prog_read_value so that perf_event type program
can read event counter and enabled/running time.
This commit, however, introduced a bug which allows this helper
for tracepoint type programs. This is incorrect as bpf_perf_prog_read_value
needs to access perf_event through its bpf_perf_event_data_kern type context,
which is not available for tracepoint type program.
This patch fixed the issue by separating bpf_func_proto between tracepoint
and perf_event type programs and removed bpf_perf_prog_read_value
from tracepoint func prototype.
Fixes: 4bebdc7a85 ("bpf: add helper bpf_perf_prog_read_value")
Reported-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Function bpf_fill_maxinsns11 is designed to not be able to be JITed on
x86_64. So, it fails when CONFIG_BPF_JIT_ALWAYS_ON=y, and
commit 09584b4067 ("bpf: fix selftests/bpf test_kmod.sh failure when
CONFIG_BPF_JIT_ALWAYS_ON=y") makes sure that failure is detected on that
case.
However, it does not fail on other architectures, which have a different
JIT compiler design. So, test_bpf has started to fail to load on those.
After this fix, test_bpf loads fine on both x86_64 and ppc64el.
Fixes: 09584b4067 ("bpf: fix selftests/bpf test_kmod.sh failure when CONFIG_BPF_JIT_ALWAYS_ON=y")
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Reviewed-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
The undocumented 'icebp' instruction (aka 'int1') works pretty much like
'int3' in the absense of in-circuit probing equipment (except,
obviously, that it raises #DB instead of raising #BP), and is used by
some validation test-suites as such.
But Andy Lutomirski noticed that his test suite acted differently in kvm
than on bare hardware.
The reason is that kvm used an inexact test for the icebp instruction:
it just assumed that an all-zero VM exit qualification value meant that
the VM exit was due to icebp.
That is not unlike the guess that do_debug() does for the actual
exception handling case, but it's purely a heuristic, not an absolute
rule. do_debug() does it because it wants to ascribe _some_ reasons to
the #DB that happened, and an empty %dr6 value means that 'icebp' is the
most likely casue and we have no better information.
But kvm can just do it right, because unlike the do_debug() case, kvm
actually sees the real reason for the #DB in the VM-exit interruption
information field.
So instead of relying on an inexact heuristic, just use the actual VM
exit information that says "it was 'icebp'".
Right now the 'icebp' instruction isn't technically documented by Intel,
but that will hopefully change. The special "privileged software
exception" information _is_ actually mentioned in the Intel SDM, even
though the cause of it isn't enumerated.
Reported-by: Andy Lutomirski <luto@kernel.org>
Tested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes: 2f987a76a9 ("net: ipv6: keep sk status consistent after datagram connect failure")
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge tag 'linux-can-fixes-for-4.16-20180319' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
Marc Kleine-Budde says:
====================
pull-request: can 2018-03-19
this is a pull reqeust of one patch for net/master.
The patch is by Andri Yngvason and fixes a potential use-after-free bug
in the cc770 driver introduced in the previous pull-request.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
cppcheck report:
[drivers/net/ethernet/cortina/gemini.c:543]: (error) Memory leak: skb_tab
Signed-off-by: Igor Pylypiv <igor.pylypiv@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
