Gateway having bandwidth_down equal to zero are not accepted
at all and so never added to the Gateway list.
For this reason checking the bandwidth_down member in
batadv_gw_out_of_range() is useless.
This is probably a copy/paste error and this check was supposed
to be "!gw_node" only. Moreover, the way the check is written
now may also lead to a NULL dereference.
Fix this by rewriting the if-condition properly.
Introduced by 414254e342
("batman-adv: tvlv - gateway download/upload bandwidth container")
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
The fragmentation code was replaced in 610bfc6bc9
("batman-adv: Receive fragmented packets and merge") by an implementation which
can handle up to 16 fragments of a packet. The packet is prepared for the split
in fragments by the function batadv_frag_send_packet and the actual split is
done by batadv_frag_create.
Both functions calculate the size of a fragment themself. But their calculation
differs because batadv_frag_send_packet also subtracts ETH_HLEN. Therefore,
the check in batadv_frag_send_packet "can a full fragment can be created?" may
return true even when batadv_frag_create cannot create a full fragment.
The function batadv_frag_create doesn't check the size of the skb before
splitting it and therefore might try to create a larger fragment than the
remaining buffer. This creates an integer underflow and an invalid len is given
to skb_split.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The fragmentation code was replaced in 610bfc6bc9
("batman-adv: Receive fragmented packets and merge"). The new code provided a
mostly unused parameter skb for the merging function. It is used inside the
function to calculate the additionally needed skb tailroom. But instead of
increasing its own tailroom, it is only increasing the tailroom of the first
queued skb. This is not correct in some situations because the first queued
entry can be a different one than the parameter.
An observed problem was:
1. packet with size 104, total_size 1464, fragno 1 was received
- packet is queued
2. packet with size 1400, total_size 1464, fragno 0 was received
- packet is queued at the end of the list
3. enough data was received and can be given to the merge function
(1464 == (1400 - 20) + (104 - 20))
- merge functions gets 1400 byte large packet as skb argument
4. merge function gets first entry in queue (104 byte)
- stored as skb_out
5. merge function calculates the required extra tail as total_size - skb->len
- pskb_expand_head tail of skb_out with 64 bytes
6. merge function tries to squeeze the extra 1380 bytes from the second queued
skb (1400 byte aka skb parameter) in the 64 extra tail bytes of skb_out
Instead calculate the extra required tail bytes for skb_out also using skb_out
instead of using the parameter skb. The skb parameter is only used to get the
total_size from the last received packet. This is also the total_size used to
decide that all fragments were received.
Reported-by: Philipp Psurek <philipp.psurek@gmail.com>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Acked-by: Martin Hundebøll <martin@hundeboll.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit cecda693a9 ("net: keep original skb
which only needs header checking during software GSO") keeps the original
skb for packets that only needs header check, but it doesn't drop the
packet if software segmentation or header check were failed.
Fixes cecda693a9 ("net: keep original skb which only needs header checking during software GSO")
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This reverts commit 355a701838.
This had some bad side effects under normal operation, and should
have been dropped earlier.
Signed-off-by: Dave Airlie <airlied@redhat.com>
- Display MEC fw version in topology. Without this, the HSA userspace
stack is broken.
- Init apertures information only once per process
* tag 'amdkfd-fixes-2014-12-23' of git://people.freedesktop.org/~gabbayo/linux:
amdkfd: init aperture once per process
amdkfd: Display MEC fw version in topology node
drm/radeon: Add implementation of get_fw_version
drm/amd: Add get_fw_version to kfd-->kgd interface
The Int340x thermal provides a processor thermal device, which
is used to control processor thermal states. These devices are
either reported as a PCI device or an ACPI device. This
device provides power limits, control states and optional
temperature.
This change implements minimal requirements to expose processor
power limits which can be used during thermal power limiting.
Power limits are exposed via an attribute group called
"power_limits" under the device. The exported attributes
are:
power_limit_0_max_uw
power_limit_1_max_uw
power_limit_0_min_uw
power_limit_1_min_uw
power_limit_0_tmin_us
power_limit_1_tmin_us
power_limit_0_tmax_us
power_limit_1_tmax_us
power_limit_0_step_uw
power_limit_1_step_uw
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Pull audit fixes from Paul Moore:
"Four patches to fix various problems with the audit subsystem, all are
fairly small and straightforward.
One patch fixes a problem where we weren't using the correct gfp
allocation flags (GFP_KERNEL regardless of context, oops), one patch
fixes a problem with old userspace tools (this was broken for a
while), one patch fixes a problem where we weren't recording pathnames
correctly, and one fixes a problem with PID based filters.
In general I don't think there is anything controversial with this
patchset, and it fixes some rather unfortunate bugs; the allocation
flag one can be particularly scary looking for users"
* 'upstream' of git://git.infradead.org/users/pcmoore/audit:
audit: restore AUDIT_LOGINUID unset ABI
audit: correctly record file names with different path name types
audit: use supplied gfp_mask from audit_buffer in kauditd_send_multicast_skb
audit: don't attempt to lookup PIDs when changing PID filtering audit rules
A regression was caused by commit 780a7654cee8:
audit: Make testing for a valid loginuid explicit.
(which in turn attempted to fix a regression caused by e1760bd)
When audit_krule_to_data() fills in the rules to get a listing, there was a
missing clause to convert back from AUDIT_LOGINUID_SET to AUDIT_LOGINUID.
This broke userspace by not returning the same information that was sent and
expected.
The rule:
auditctl -a exit,never -F auid=-1
gives:
auditctl -l
LIST_RULES: exit,never f24=0 syscall=all
when it should give:
LIST_RULES: exit,never auid=-1 (0xffffffff) syscall=all
Tag it so that it is reported the same way it was set. Create a new
private flags audit_krule field (pflags) to store it that won't interact with
the public one from the API.
Cc: stable@vger.kernel.org # v3.10-rc1+
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Paul Moore <pmoore@redhat.com>
This patch adds pgd_page definition in order to keep supporting
HAVE_GENERIC_RCU_GUP configuration. In addition, it changes pud_page
expression to align with pmd_page for readability.
An introduction of pgd_page resolves the following build breakage
under 4KB + 4Level memory management combo.
mm/gup.c: In function 'gup_huge_pgd':
mm/gup.c:889:2: error: implicit declaration of function 'pgd_page' [-Werror=implicit-function-declaration]
head = pgd_page(orig);
^
mm/gup.c:889:7: warning: assignment makes pointer from integer without a cast
head = pgd_page(orig);
Cc: Will Deacon <will.deacon@arm.com>
Cc: Steve Capper <steve.capper@linaro.org>
Signed-off-by: Jungseok Lee <jungseoklee85@gmail.com>
[catalin.marinas@arm.com: remove duplicate pmd_page definition]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
The usual defconfig tweaks, this time:
- FHANDLE and AUTOFS4_FS to keep systemd happy
- PID_NS, QUOTA and KEYS to keep LTP happy
- Disable DEBUG_PREEMPT, as this *really* hurts performance
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
On arm64 the TTBR0_EL1 register is set to either the reserved TTBR0
page tables on boot or to the active_mm mappings belonging to user space
processes, it must never be set to swapper_pg_dir page tables mappings.
When a CPU is booted its active_mm is set to init_mm even though its
TTBR0_EL1 points at the reserved TTBR0 page mappings. This implies
that when __cpu_suspend is triggered the active_mm can point at
init_mm even if the current TTBR0_EL1 register contains the reserved
TTBR0_EL1 mappings.
Therefore, the mm save and restore executed in __cpu_suspend might
turn out to be erroneous in that, if the current->active_mm corresponds
to init_mm, on resume from low power it ends up restoring in the
TTBR0_EL1 the init_mm mappings that are global and can cause speculation
of TLB entries which end up being propagated to user space.
This patch fixes the issue by checking the active_mm pointer before
restoring the TTBR0 mappings. If the current active_mm == &init_mm,
the code sets the TTBR0_EL1 to the reserved TTBR0 mapping instead of
switching back to the active_mm, which is the expected behaviour
corresponding to the TTBR0_EL1 settings when __cpu_suspend was entered.
Fixes: 95322526ef ("arm64: kernel: cpu_{suspend/resume} implementation")
Cc: <stable@vger.kernel.org> # 3.14+: 18ab7db
Cc: <stable@vger.kernel.org> # 3.14+: 714f599
Cc: <stable@vger.kernel.org> # 3.14+: c3684fb
Cc: <stable@vger.kernel.org> # 3.14+
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
- Remove soon-to-be-dead @redhat address.
- Jeff Hartmann wrote the bulk of the original backend code, and should
at least get a mention in the MODULE_AUTHOR for backend.o
- Various people at Intel have done a lot more work than myself on the
intel-* drivers, so again, mention that.
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
- Fix inability to discard used space when the thin-pool target is in
out-of-data-space mode and also transition the thin-pool back to write
mode once free space is made available.
- Fix DM core bio-based end_io bug that prevented proper post-processing
of the error code returned from the block layer.
- Fix crash in DM thin-pool due to thin device being added to the pool's
active_thins list before properly initializing the thin device's
refcount.
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Merge tag 'dm-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
"Thre stable fixes and one fix for a regression introduced during 3.19
merge:
- Fix inability to discard used space when the thin-pool target is in
out-of-data-space mode and also transition the thin-pool back to
write mode once free space is made available.
- Fix DM core bio-based end_io bug that prevented proper
post-processing of the error code returned from the block layer.
- Fix crash in DM thin-pool due to thin device being added to the
pool's active_thins list before properly initializing the thin
device's refcount"
* tag 'dm-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm: fix missed error code if .end_io isn't implemented by target_type
dm thin: fix crash by initializing thin device's refcount and completion earlier
dm thin: fix missing out-of-data-space to write mode transition if blocks are released
dm thin: fix inability to discard blocks when in out-of-data-space mode
This reverts commit c8475d144a.
There are several[1][2] of bug reports which points to this commit as potential
cause[3].
Let's revert it until we figure out what's going on.
[1] https://lkml.org/lkml/2014/11/14/342
[2] https://lkml.org/lkml/2014/12/22/213
[3] https://lkml.org/lkml/2014/12/9/741
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Acked-by: Davidlohr Bueso <dave@stgolabs.net>
Cc: Hugh Dickins <hughd@google.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is a set of fixes for two regressions and one bug in the IOMMU
mapping code. It turns out that all of these issues turn up primarily
on Tegra30 hardware. The IOMMU mapping bug only manifests on buffers
that aren't multiples of the page size. I happened to be testing HDMI
with 1080p while writing the code and framebuffers for that happen to
fit exactly within 2025 pages of 4 KiB each.
One of the regressions is caused by the IOMMU code allocating pages from
shmem which can have associated cache lines. If the pages aren't flushed
then these cache lines may be flushed later on and cause framebuffer
corruption. I'm not sure why I didn't see this before. Perhaps the board
that I was using had enough RAM so that the pages shmem would hand out
had a better chance of being unused. Or maybe I didn't look too closely.
The fix for this is to fake up an SG table so that it can be passed to
the DMA API. Ideally this would use drm_clflush_*(), but implementing
that for ARM causes DRM to fail to build as a module since some of the
low-level cache maintenance functions aren't exported. Hopefully we can
get a suitable API exported on ARM for the next release.
The second regression is caused by a mismatch between the hardware pipe
number and the CRTC's DRM index. These were used inconsistently, which
could cause one code location to call drm_vblank_get() with a different
pipe than the corresponding drm_vblank_put(), thereby causing the
reference count to become unbalanced. Alexandre also reported a possible
race condition related to this, which this series also fixes.
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Merge tag 'drm/tegra/for-3.19-rc1-fixes' of git://people.freedesktop.org/~tagr/linux into drm-fixes
drm/tegra: Fixes for v3.19-rc1
This is a set of fixes for two regressions and one bug in the IOMMU
mapping code. It turns out that all of these issues turn up primarily
on Tegra30 hardware. The IOMMU mapping bug only manifests on buffers
that aren't multiples of the page size. I happened to be testing HDMI
with 1080p while writing the code and framebuffers for that happen to
fit exactly within 2025 pages of 4 KiB each.
One of the regressions is caused by the IOMMU code allocating pages from
shmem which can have associated cache lines. If the pages aren't flushed
then these cache lines may be flushed later on and cause framebuffer
corruption. I'm not sure why I didn't see this before. Perhaps the board
that I was using had enough RAM so that the pages shmem would hand out
had a better chance of being unused. Or maybe I didn't look too closely.
The fix for this is to fake up an SG table so that it can be passed to
the DMA API. Ideally this would use drm_clflush_*(), but implementing
that for ARM causes DRM to fail to build as a module since some of the
low-level cache maintenance functions aren't exported. Hopefully we can
get a suitable API exported on ARM for the next release.
The second regression is caused by a mismatch between the hardware pipe
number and the CRTC's DRM index. These were used inconsistently, which
could cause one code location to call drm_vblank_get() with a different
pipe than the corresponding drm_vblank_put(), thereby causing the
reference count to become unbalanced. Alexandre also reported a possible
race condition related to this, which this series also fixes.
* tag 'drm/tegra/for-3.19-rc1-fixes' of git://people.freedesktop.org/~tagr/linux:
drm/tegra: dc: Select root window for event dispatch
drm/tegra: gem: Use the proper size for GEM objects
drm/tegra: gem: Flush buffer objects upon allocation
drm/tegra: dc: Fix a potential race on page-flip completion
drm/tegra: dc: Consistently use the same pipe
drm/irq: Add drm_crtc_vblank_count()
drm/irq: Add drm_crtc_handle_vblank()
drm/irq: Add drm_crtc_send_vblank_event()
misc i915 fixes.
* tag 'drm-intel-next-fixes-2014-12-17' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Disable PSMI sleep messages on all rings around context switches
drm/i915: Force the CS stall for invalidate flushes
drm/i915: Invalidate media caches on gen7
drm/i915: sanitize RPS resetting during GPU reset
drm/i915: move RPS PM_IER enabling to gen6_enable_rps_interrupts
drm/i915: vlv: fix IRQ masking when uninstalling interrupts
Yeah a pull for one patch is a bit overkill but I started to assemble the
various patches for 3.20 in a branch for atomic props/ioctl and didn't
realize that this bugfix here at the beginnning of the branch should be in
3.19 (because msm is using the helpers arleady). So if you'd merge we'd
have it twice or or I need to shuffle branches again. Can do if you want.
* tag 'topic/atomic-fixes-2014-12-17' of git://anongit.freedesktop.org/drm-intel:
drm/atomic: fix potential null ptr on plane enable
A few msm fixes for 3.19:
* hdmi regulators fix
* hdmi fix for spurious HPD interrupts
* fix for sync atomic update after async update (which could show
up with a setcrtc following a pageflip)
* couple little Coccinelle cleanups
* 'msm-fixes-3.19' of git://people.freedesktop.org/~robclark/linux:
drm/msm/hdmi: rework HDMI IRQ handler
drm/msm/hdmi: enable regulators before clocks to avoid warnings
drm/msm/mdp5: update irqs on crtc<->encoder link change
drm/msm: block incoming update on pending updates
drm/msm: Deletion of unnecessary checks before the function call "release_firmware"
drm/msm: Deletion of unnecessary checks before two function calls
nouveau userspace back at 1.0.1 used to call the X server
DRIOpenDRMMaster interface even for DRI2 (doh!), this attempts
to map the sarea and fails if it can't.
Since 884c6dabb0 from Daniel,
this fails, but only ancient drivers would see it.
Revert the nouveau bits of that fix.
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: <stable@vger.kernel.org> # 3.18
Signed-off-by: Dave Airlie <airlied@redhat.com>
Several Samsung laptop models (SAMSUNG 870Z5E/880Z5E/680Z5E and
SAMSUNG 370R4E/370R4V/370R5E/3570RE/370R5V) do not have a working
native backlight control interface so restore their acpi_videoX
interface.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=84221
Link: https://bugzilla.kernel.org/show_bug.cgi?id=84651
For SAMSUNG 870Z5E/880Z5E/680Z5E:
Reported-and-tested-by: Brent Saner <brent.saner@gmail.com>
Reported-by: Vitaliy Filippov <vitalif@yourcmc.ru>
Reported-by: Laszlo KREKACS <laszlo.krekacs.list@gmail.com>
For SAMSUNG 370R4E/370R4V/370R5E/3570RE/370R5V:
Reported-by: Vladimir Perepechin <vovochka13@gmail.com>
Cc: 3.17+ <stable@vger.kernel.org> # 3.17+
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
When xfrm6_policy_check() is used, _decode_session6() is called after some
intermediate functions. This function uses IP6CB(), thus TCP_SKB_CB() must be
prepared after the call of xfrm6_policy_check().
Before this patch, scenarii with IPv6 + TCP + IPsec Transport are broken.
Fixes: 971f10eca1 ("tcp: better TCP_SKB_CB layout to reduce cache line misses")
Reported-by: Huaibin Wang <huaibin.wang@6wind.com>
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Decode and display Port Type and Module Type for ethtool get_settings() call
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The commit d75b1ade56 (net: less
interrupt masking in NAPI) breaks caif.
It is now required that if the entire budget is consumed when poll
returns, the napi poll_list must remain empty. However, like some
other drivers caif tries to do a last-ditch check and if there is
more work it will call napi_schedule and then immediately process
some of this new work. Should the entire budget be consumed while
processing such new work then we will violate the new caller
contract.
This patch fixes this by not touching any work when we reschedule
in caif.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
iowrite32() will byteswap it's argument on big endian archs.
iowrite32be() will byteswap on little endian archs.
Since we don't want to do this unnecessary byteswap on the fast path,
doorbell is stored in the NIC's native endianness. Using the right
iowrite() according to the arch endianness.
CC: Wei Yang <weiyang@linux.vnet.ibm.com>
CC: David Laight <david.laight@aculab.com>
Fixes: 6a4e812 ("net/mlx4_en: Avoid calling bswap in tx fast path")
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
For linux-3.18.0
The driver lacks netif_napi_del in the normal path and error path
to match the call of netif_napi_add in rtl8139_init_one.
This patch fixes this problem.
Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
For linux-3.18.0
When pci_request_regions is failed in rtl8139_init_board, pci_disable_device
is not called to disable the device which are enabled by pci_enable_device,
because of disable_dev_on_err is not assigned 1.
This patch fix this problem.
Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This platform_driver does not need to set an owner, it will be populated by the
driver core.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
The s6000 Xtensa support has been removed from the kernel in
4006e565e1. There are no other chips using this driver.
While the Mentor/Alcatel PE-MCXMAC IP core is also used in other
designs (Freescale Gianfar/UCC, QLogic NetXen, Solarflare, Agere
ET-1310, Netlogic XLR/XLS), none of these use this driver as it
heavily depends on the s6000 DMA engine. In fact, there is no
code sharing across any of the aforementioned devices.
Signed-off-by: Daniel Glöckner <dg@emlix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove the function port_cfg_dis_learn() that is not used anywhere.
This was partially found by using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
During driver load in tg3_init_one, if the driver detects DMA activity before
intializing the chip tg3_halt is called. As part of tg3_halt interrupts are
disabled using routine tg3_disable_ints. This routine was using mailbox value
which was not initialized (default value is 0). As a result driver was writing
0x00000001 to pci config space register 0, which is the vendor id / device id.
This driver bug was exposed because of the commit a7877b17a667 (PCI: Check only
the Vendor ID to identify Configuration Request Retry). Also this issue is only
seen in older generation chipsets like 5722 because config space write to offset
0 from driver is possible. The newer generation chips ignore writes to offset 0.
Also without commit a7877b17a667, for these older chips when a GRC reset is
issued the Bootcode would reprogram the vendor id/device id, which is the reason
this bug was masked earlier.
Fixed by initializing the interrupt mailbox registers before calling tg3_halt.
Please queue for -stable.
Reported-by: Nils Holland <nholland@tisys.org>
Reported-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Prashant Sreedharan <prashant@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Resolve conflicts between glibc definition of IPV6 socket options
and those defined in Linux headers. Looks like earlier efforts to
solve this did not cover all the definitions.
It resolves warnings during iproute2 build.
Please consider for stable as well.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The changed names are union fields with the same size, so the existing code
still works. But, we now update these variables to the correct names.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The commit d75b1ade56 (net: less
interrupt masking in NAPI) breaks virtio_net in an insidious way.
It is now required that if the entire budget is consumed when poll
returns, the napi poll_list must remain empty. However, like some
other drivers virtio_net tries to do a last-ditch check and if
there is more work it will call napi_schedule and then immediately
process some of this new work. Should the entire budget be consumed
while processing such new work then we will violate the new caller
contract.
This patch fixes this by not touching any work when we reschedule
in virtio_net.
The worst part of this bug is that the list corruption causes other
napi users to be moved off-list. In my case I was chasing a stall
in IPsec (IPsec uses netif_rx) and I only belatedly realised that it
was virtio_net which caused the stall even though the virtio_net
poll was still functioning perfectly after IPsec stalled.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Both stmmac_open() and stmmac_resume() call stmmac_hw_setup(), and
stmmac_hw_setup() call stmmac_init_ptp() unconditionally. However, only
stmmac_release() calls stmmac_release_ptp(). Since stmmac_suspend()
doesn't call stmmac_release_ptp(), stmmac_resume() also needn't call
stmmac_init_ptp().
This patch also fix a "scheduling while atomic" problem when resume
from suspend/hibernation. Because stmmac_init_ptp() will trigger
scheduling while stmmac_resume() hold a spinlock.
Callgraph of "scheduling while atomic":
stmmac_resume() --> stmmac_hw_setup() --> stmmac_init_ptp() -->
stmmac_ptp_register() --> ptp_clock_register() --> device_create() -->
device_create_groups_vargs() --> device_add() --> devtmpfs_create_node()
--> wait_for_common() --> schedule_timeout() --> __schedule()
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Make TPACKET_V3 signal poll when block is closed rather than for every
packet. Side effect is that poll will be signaled when block retire
timer expires which didn't previously happen. Issue was visible when
sending packets at a very low frequency such that all blocks are retired
before packets are received by TPACKET_V3. This caused avoidable packet
loss. The fix ensures that the signal is sent when blocks are closed
which covers the normal path where the block is filled as well as the
path where the timer expires. The case where a block is filled without
moving to the next block (ie. all blocks are full) will still cause poll
to be signaled.
Signed-off-by: Dan Collins <dan@dcollins.co.nz>
Signed-off-by: David S. Miller <davem@davemloft.net>
In spite of different file type,
if file is same name and same inode number, old inode cache is used.
This causes that you can not cd directory, can not cat SymbolicLink.
So this patch is that if file type is different, return error.
Reproducible sample :
1. create file 'a' at cifs client.
2. repeat rm and mkdir 'a' 4 times at server, then direcotry 'a' having same inode number is created.
(Repeat 4 times, then same inode number is recycled.)
(When server is under RHEL 6.6, 1 time is O.K. Always same inode number is recycled.)
3. ls -li at client, then you can not cd directory, can not remove directory.
SymbolicLink has same problem.
Bug link:
https://bugzilla.kernel.org/show_bug.cgi?id=90011
Signed-off-by: Nakajima Akira <nakajima.akira@nttcom.co.jp>
Acked-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: Steve French <steve.french@primarydata.com>
On 32-bit:
execveat.c: In function 'check_execveat_pathmax':
execveat.c:183: warning: format '%lu' expects type 'long unsigned int', but argument 3 has type 'size_t'
execveat.c:187: warning: format '%lu' expects type 'long unsigned int', but argument 2 has type 'size_t'
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
It is recommended that the SPFI controller be enabled (i.e. setting
SPFI_EN in SPFI_CONTROL) before TX DMA begins.
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
There is a problem with the audit system when multiple audit records
are created for the same path, each with a different path name type.
The root cause of the problem is in __audit_inode() when an exact
match (both the path name and path name type) is not found for a
path name record; the existing code creates a new path name record,
but it never sets the path name in this record, leaving it NULL.
This patch corrects this problem by assigning the path name to these
newly created records.
There are many ways to reproduce this problem, but one of the
easiest is the following (assuming auditd is running):
# mkdir /root/tmp/test
# touch /root/tmp/test/567
# auditctl -a always,exit -F dir=/root/tmp/test
# touch /root/tmp/test/567
Afterwards, or while the commands above are running, check the audit
log and pay special attention to the PATH records. A faulty kernel
will display something like the following for the file creation:
type=SYSCALL msg=audit(1416957442.025:93): arch=c000003e syscall=2
success=yes exit=3 ... comm="touch" exe="/usr/bin/touch"
type=CWD msg=audit(1416957442.025:93): cwd="/root/tmp"
type=PATH msg=audit(1416957442.025:93): item=0 name="test/"
inode=401409 ... nametype=PARENT
type=PATH msg=audit(1416957442.025:93): item=1 name=(null)
inode=393804 ... nametype=NORMAL
type=PATH msg=audit(1416957442.025:93): item=2 name=(null)
inode=393804 ... nametype=NORMAL
While a patched kernel will show the following:
type=SYSCALL msg=audit(1416955786.566:89): arch=c000003e syscall=2
success=yes exit=3 ... comm="touch" exe="/usr/bin/touch"
type=CWD msg=audit(1416955786.566:89): cwd="/root/tmp"
type=PATH msg=audit(1416955786.566:89): item=0 name="test/"
inode=401409 ... nametype=PARENT
type=PATH msg=audit(1416955786.566:89): item=1 name="test/567"
inode=393804 ... nametype=NORMAL
This issue was brought up by a number of people, but special credit
should go to hujianyang@huawei.com for reporting the problem along
with an explanation of the problem and a patch. While the original
patch did have some problems (see the archive link below), it did
demonstrate the problem and helped kickstart the fix presented here.
* https://lkml.org/lkml/2014/9/5/66
Reported-by: hujianyang <hujianyang@huawei.com>
Signed-off-by: Paul Moore <pmoore@redhat.com>
Acked-by: Richard Guy Briggs <rgb@redhat.com>
snd_soc_sst_bytcr_dpcm_rt5640 doesn't autoload because MODULE_ALIAS doesn't
match with "bytt100_rt5640" platform device.
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Cc: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
BYTCR DSP firmware is in intel/ subdirectory. See linux-firmware.git
commit d562a3b63632 ("linux-firmware: add sst audio firmware for baytrail
platforms").
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
The Designware core can be configured with up to four stereo channels.
Each stereo channel is individually configured so, when the driver's
hw_params call is made, each requested stereo channel has to be
programmed.
Signed-off-by: Andrew Jackson <Andrew.Jackson@arm.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Flush the FIFOs when the stream is prepared for use. This avoids
an inadvertent swapping of the left/right channels if the FIFOs are
not empty at startup.
Signed-off-by: Andrew Jackson <Andrew.Jackson@arm.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
Fix following build error when CONFIG_I2C is not enabled:
sound/soc/codecs/rt5640.c:2252:1: warning: data definition has no type or storage class
module_i2c_driver(rt5640_i2c_driver);
^
sound/soc/codecs/rt5640.c:2252:1: error: type defaults to ‘int’ in declaration of ‘module_i2c_driver’ [-Werror=implicit-int]
sound/soc/codecs/rt5640.c:2252:1: warning: parameter names (without types) in function declaration
sound/soc/codecs/rt5640.c:2241:26: warning: ‘rt5640_i2c_driver’ defined but not used [-Wunused-variable]
static struct i2c_driver rt5640_i2c_driver = {
^
cc1: some warnings being treated as errors
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Antonio Quartulli
Sven Eckelmann
Jason Wang
Dave Airlie
Zhang Rui
Srinivas Pandruvada
Linus Torvalds
Richard Guy Briggs
Jungseok Lee
Will Deacon
Lorenzo Pieralisi
Dave Jones
Kirill A. Shutemov
Aaron Lu
Nicolas Dichtel
Hariprasad Shenai
Herbert Xu
Amir Vadai
Jia-Ju Bai
Wolfram Sang
Daniel Glöckner
Rickard Strandqvist
Prashant Sreedharan
stephen hemminger
Haiyang Zhang
Huacai Chen
Dan Collins
Nakajima Akira
Geert Uytterhoeven
Andrew Bresticker
Paul Moore
Jarkko Nikula
Andrew Jackson