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gvt-next-2017-02-15
- Chuanxiao's IOMMU workaround fix
- debug message cleanup from Changbin
- oops fix in fail path of workload submission when GPU reset from Changbin
- other misc fixes
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
From Zhenyu, "These are GVT-g changes for 4.11 merge window, mostly for
gvt init order fix that impacted resource handling for device model, the
one i915 change has been reviewed and acked."
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Use iommu for rockchip arm64 platform.
* 'drm-rockchip-next-2017-02-16' of https://github.com/markyzq/kernel-drm-rockchip:
drm/rockchip: Use common IOMMU API to attach devices
drm/rockchip: Do not use DMA mapping API if attached to IOMMU domain
Fixes for the v4.11 merge window.
* tag 'drm-misc-next-fixes-2017-02-15' of git://anongit.freedesktop.org/git/drm-misc:
drm: Resurrect atomic rmfb code, v3
uapi: add missing install of dma-buf.h
- fix issues met around gdp panes
- fix STI driver unbind procedure
- DVI/HDMI mode is automatically detected
- allow fps statisitics resetting
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Merge tag 'sti-drm-next-2017-02-10' of https://github.com/vinceab/linux into drm-next
- remove deprecated stih416 chip functionnalities
- fix issues met around gdp panes
- fix STI driver unbind procedure
- DVI/HDMI mode is automatically detected
- allow fps statisitics resetting
* tag 'sti-drm-next-2017-02-10' of https://github.com/vinceab/linux:
drm/sti: debug fps reset
drm/sti: hdmi: automatically check DVI/HDMI mode
drm/sti: unbind all components while driver cleanup
drm/sti: do not post GDP command if no update
drm/sti: do not set gdp pixel clock rate if mode is not set
drm/sti: enable gdp pixel clock in atomic_update
drm/sti: remove deprecated legacy vtg slave
drm/sti: remove deprecated sink_term config
drm/sti: do not check hw scaling if mode is not set
drm/sti: Fix up crtc_state->event handling
drm/sti: use atomic_helper for commit
Unlike the other encoders in the driver, I've also dropped the debug
dump function. There's only really one register to this device, and
we have the debugfs reg entry still.
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170208204701.29013-1-eric@anholt.net
This was somehow lost between v3 and the merged version in Maarten's
patch merged as:
commit f2d580b9a8
Author: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Date: Wed May 4 14:38:26 2016 +0200
drm/core: Do not preserve framebuffer on rmfb, v4.
This introduces a slight behavioral change to rmfb. Instead of
disabling a crtc when the primary plane is disabled, we try to
preserve it.
Apart from old versions of the vmwgfx xorg driver, there is
nothing depending on rmfb disabling a crtc. Since vmwgfx is
a legacy driver we can safely only disable the plane with atomic.
If this commit is rejected by the driver then we will still fall
back to the old behavior and turn off the crtc.
v2:
- Remove plane->fb assignment, done by drm_atomic_clean_old_fb.
- Add WARN_ON when atomic_remove_fb fails.
- Always call drm_atomic_state_put.
v3:
- Use drm_drv_uses_atomic_modeset
- Handle the case where the first plane-disable-only commit fails
with -EINVAL. Some drivers do not support this, fall back to
disabling all crtc's in this case.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/66fc3da5-697b-1613-0a67-a5293209f0dc@linux.intel.com
Rockchip DRM used the arm special API, arm_iommu_*(), to attach
iommu for ARM32 SoCs. This patch convert to common iommu API
so it would support ARM64 like RK3399.
Since previous patch added support for direct IOMMU address space
management, there is no need to use DMA API anymore and this patch wires
things to use the new method.
Signed-off-by: Shunqian Zheng <zhengsq@rock-chips.com>
Signed-off-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
The API is not suitable for subsystems consisting of multiple devices
and requires severe hacks to use it. To mitigate this, this patch
implements allocation and address space management locally by using
helpers provided by DRM framework, like other DRM drivers do, e.g.
Tegra.
This patch should not introduce any functional changes until the driver
is made to attach subdevices into an IOMMU domain with the generic IOMMU
API, which will happen in following patch. Based heavily on GEM
implementation of Tegra DRM driver.
Signed-off-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Shunqian Zheng <zhengsq@rock-chips.com>
Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
Signed-off-by: rjan Eide <orjan.eide@arm.com>
The warnings from parsing the EDID are not driver errors, but the
"normal but significant" conditions from the external device. As such,
they do not need the ferocity of an *ERROR*, but can use the less harsh
DRM_NOTE instead.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170210195913.9878-1-chris@chris-wilson.co.uk
As part of c11e391da2 "dma-buf: Add ioctls to
allow userspace to flush" a new uapi header file dma-buf.h was added, but an
entry was not added on Kbuild to install it. This patch resolves this omission
so that "make headers_install" installs this header.
Signed-off-by: Denys Dmytriyenko <denys@ti.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: David Herrmann <dh.herrmann@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Tiago Vignatti <tiago.vignatti@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1487102447-59265-1-git-send-email-denis@denix.org
Most DRM messages include three pieces of information: the type of the
component (CRTC, ENCODER, CONNECTOR etc), the DRM object ID of the
component, and the component name. However, there are some messages
which omit the last piece of identifying information. This makes it
harder to debug failures when these messages are printed, because the
DRM object ID doesn't supply enough information to know which piece of
hardware had a problem.
Update the atomic modeset code to always print the component name along
with the type and DRM object ID.
Fixes: 4cba68507c ("drm/atomic-helper: Reject legacy flips on a disabled pipe")
Fixes: 8d4d0d700d ("drm/atomic-helper: Print an error if vblank wait times out")
Fixes: 5481c8fb1d ("drm/atomic-helper: Check encoder/crtc constraints")
Fixes: 99cf4a29fa ("drm/atomic: Add current-mode blob to CRTC state")
Fixes: cc4ceb484b ("drm: Global atomic state handling")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Thierry Reding <treding@nvidia.com>
[danvet: Wiggle in conflicting hunk.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This kills another dereference of connector->state. connector_mask
holds all unchanged connectors at least and any changed connectors
are already in state anyway.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1484559464-27107-3-git-send-email-maarten.lankhorst@linux.intel.com
Add for_each_(old)(new)_(plane,connector,crtc)_in_state iterators to
replace the old for_each_xxx_in_state ones. This is useful for >1 flip
depth and getting rid of all xxx->state dereferences.
This requires extra fixups done when committing a state after
duplicating, which in general isn't valid but is used by suspend/resume.
To handle these, introduce drm_atomic_helper_commit_duplicated_state
which performs those fixups before checking & committing the state.
Changes since v1:
- Remove nonblock parameter for commit_duplicated_state.
Changes since v2:
- Use commit_duplicated_state for i915 load detection.
- Add WARN_ON(old_state != obj->state) before swapping.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1484559464-27107-2-git-send-email-maarten.lankhorst@linux.intel.com
When doing dma map failed for a pfn, kvmgt should unpin the
pfn and return error code to device module driver
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Cc: xinda.zhao@intel.com
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
For the inhibit ctx, load all mmio in render mmio list
into HW by MMIO write for ctx initialization.
For the none-inhibit ctx, only load the render mmio which
is not in_context into HW by MMIO write. Skip the MMIO write
for in_context mmio as context image will load it.
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
* Add flip done event support for sprite plane on SKL platform.
* Fix bug #1452, "Call Trace:handle_default_event_virt+0xef/0x100
[i915]" while booting up guest.
Signed-off-by: Xu Han <xu.han@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
We also need reset vGPU virtual display emulation. Since all vreg has
been cleared, we need reset display related vreg to reflect our display
setting.
Signed-off-by: Changbin Du <changbin.du@intel.com>
Cc: Ping Gao <ping.a.gao@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
We need to be careful to only update addr mode for gvt shadow context
descriptor but keep other valid config. This fixes GPU hang caused by
invalid descriptor submitted for gvt workload.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
We need to properly setup alignment for GTT start/end/size
as required. Fixed warning from i915 gem.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Initialized PIPE_ORDER_TS0/1/2/3 field of SPI_ARB_PRIORITY register to 2.
This set the pipe priority order to:
02 - HP3D, CS_H, GFX, CS_M, CS_L
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Add a bit needed during initialization into the driver, where it is supposed
to be. Currently, this is happening in the VCE firmware, and although
functional, this is the correct place to perform this initialization.
Reviewed-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alan Harrison <Alan.Harrison@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Fixes the following sparse warning:
drivers/gpu/drm/bridge/ti-tfp410.c:223:24: warning:
symbol 'tfp410_platform_driver' was not declared. Should it be static?
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170209152549.30711-1-weiyj.lk@gmail.com
The drm_mode_config helper private field points to a structure of
function pointers that don't need to be modified at runtime. Make it
const.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk>
Acked-by: Brian Starkey <brian.starkey@arm.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170102091613.6310-1-laurent.pinchart@ideasonboard.com
Pull x86 fixes from Ingo Molnar:
"Last minute x86 fixes:
- Fix a softlockup detector warning and long delays if using ptdump
with KASAN enabled.
- Two more TSC-adjust fixes for interesting firmware interactions.
- Two commits to fix an AMD CPU topology enumeration bug that caused
a measurable gaming performance regression"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm/ptdump: Fix soft lockup in page table walker
x86/tsc: Make the TSC ADJUST sanitizing work for tsc_reliable
x86/tsc: Avoid the large time jump when sanitizing TSC ADJUST
x86/CPU/AMD: Fix Zen SMT topology
x86/CPU/AMD: Bring back Compute Unit ID
Pull timer fix from Ingo Molnar:
"Fix a sporadic missed timer hw reprogramming bug that can result in
random delays"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tick/nohz: Fix possible missing clock reprog after tick soft restart
Pull irq fixes from Ingo Molnar:
"Two last minute ARM irqchip driver fixes"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/mxs: Enable SKIP_SET_WAKE and MASK_ON_SUSPEND
irqchip/keystone: Fix "scheduling while atomic" on rt
Pull btrfs fixes from Chris Mason:
"This has two last minute fixes. The highest priority here is a
regression fix for the decompression code, but we also fixed up a
problem with the 32-bit compat ioctls.
The decompression bug could hand back the wrong data on big reads when
zlib was used. I have a larger cleanup to make the math here less
error prone, but at this stage in the release Omar's patch is the best
choice"
* 'for-linus-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
btrfs: fix btrfs_decompress_buf2page()
btrfs: fix btrfs_compat_ioctl failures on non-compat ioctls
Six fairly small fixes. None is a real show stopper, two automation
detected problems: one memory leak, one use after free and four others
each of which fixes something that has been a significant source of
annoyance to someone.
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:
"Six fairly small fixes. None is a real show stopper, two automation
detected problems: one memory leak, one use after free and four others
each of which fixes something that has been a significant source of
annoyance to someone"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: zfcp: fix use-after-free by not tracing WKA port open/close on failed send
scsi: aacraid: Fix INTx/MSI-x issue with older controllers
scsi: mpt3sas: disable ASPM for MPI2 controllers
scsi: mpt3sas: Force request partial completion alignment
scsi: qla2xxx: Avoid that issuing a LIP triggers a kernel crash
scsi: qla2xxx: Fix a recently introduced memory leak
If btrfs_decompress_buf2page() is handed a bio with its page in the
middle of the working buffer, then we adjust the offset into the working
buffer. After we copy into the bio, we advance the iterator by the
number of bytes we copied. Then, we have some logic to handle the case
of discontiguous pages and adjust the offset into the working buffer
again. However, if we didn't advance the bio to a new page, we may enter
this case in error, essentially repeating the adjustment that we already
made when we entered the function. The end result is bogus data in the
bio.
Previously, we only checked for this case when we advanced to a new
page, but the conversion to bio iterators changed that. This restores
the old, correct behavior.
A case I saw when testing with zlib was:
buf_start = 42769
total_out = 46865
working_bytes = total_out - buf_start = 4096
start_byte = 45056
The condition (total_out > start_byte && buf_start < start_byte) is
true, so we adjust the offset:
buf_offset = start_byte - buf_start = 2287
working_bytes -= buf_offset = 1809
current_buf_start = buf_start = 42769
Then, we copy
bytes = min(bvec.bv_len, PAGE_SIZE - buf_offset, working_bytes) = 1809
buf_offset += bytes = 4096
working_bytes -= bytes = 0
current_buf_start += bytes = 44578
After bio_advance(), we are still in the same page, so start_byte is the
same. Then, we check (total_out > start_byte && current_buf_start < start_byte),
which is true! So, we adjust the values again:
buf_offset = start_byte - buf_start = 2287
working_bytes = total_out - start_byte = 1809
current_buf_start = buf_start + buf_offset = 45056
But note that working_bytes was already zero before this, so we should
have stopped copying.
Fixes: 974b1adc3b ("btrfs: use bio iterators for the decompression handlers")
Reported-by: Pat Erley <pat-lkml@erley.org>
Reviewed-by: Chris Mason <clm@fb.com>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Tested-by: Liu Bo <bo.li.liu@oracle.com>
Pull networking fixes from David Miller:
1) If the timing is wrong we can indefinitely stop generating new ipv6
temporary addresses, from Marcus Huewe.
2) Don't double free per-cpu stats in ipv6 SIT tunnel driver, from Cong
Wang.
3) Put protections in place so that AF_PACKET is not able to submit
packets which don't even have a link level header to drivers. From
Willem de Bruijn.
4) Fix memory leaks in ipv4 and ipv6 multicast code, from Hangbin Liu.
5) Don't use udp_ioctl() in l2tp code, UDP version expects a UDP socket
and that doesn't go over very well when it is passed an L2TP one.
Fix from Eric Dumazet.
6) Don't crash on NULL pointer in phy_attach_direct(), from Florian
Fainelli.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
l2tp: do not use udp_ioctl()
xen-netfront: Delete rx_refill_timer in xennet_disconnect_backend()
NET: mkiss: Fix panic
net: hns: Fix the device being used for dma mapping during TX
net: phy: Initialize mdio clock at probe function
igmp, mld: Fix memory leak in igmpv3/mld_del_delrec()
xen-netfront: Improve error handling during initialization
sierra_net: Skip validating irrelevant fields for IDLE LSIs
sierra_net: Add support for IPv6 and Dual-Stack Link Sense Indications
kcm: fix 0-length case for kcm_sendmsg()
xen-netfront: Rework the fix for Rx stall during OOM and network stress
net: phy: Fix PHY module checks and NULL deref in phy_attach_direct()
net: thunderx: Fix PHY autoneg for SGMII QLM mode
net: dsa: Do not destroy invalid network devices
ping: fix a null pointer dereference
packet: round up linear to header len
net: introduce device min_header_len
sit: fix a double free on error path
lwtunnel: valid encap attr check should return 0 when lwtunnel is disabled
ipv6: addrconf: fix generation of new temporary addresses
- Two security related issues in the rxe driver
- One compile issue in the RDMA uapi header
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
Pull rdma fixes from Doug Ledford:
"Third round of -rc fixes for 4.10 kernel:
- two security related issues in the rxe driver
- one compile issue in the RDMA uapi header"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
RDMA: Don't reference kernel private header from UAPI header
IB/rxe: Fix mem_check_range integer overflow
IB/rxe: Fix resid update
Pull i2c bugfixes from Wolfram Sang:
"Two bugfixes (proper IO mapping and use of mutex) for a driver feature
we introduced in this cycle"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: piix4: Request the SMBUS semaphore inside the mutex
i2c: piix4: Fix request_region size
here is the last-minute fixes for 4.10 final (or -rc8): two fixes for
races in ALSA sequencer queue spotted by syzkaller, a revert for a
regression of LINE6 driver (since 4.9), and a trivial new codec ID
addition for Nvidia HDMI.
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Merge tag 'sound-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Here are some last-minute fixes: two fixes for races in ALSA sequencer
queue spotted by syzkaller, a revert for a regression of LINE6 driver
(since 4.9), and a trivial new codec ID addition for Nvidia HDMI"
* tag 'sound-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - adding a new NV HDMI/DP codec ID in the driver
ALSA: seq: Fix race at creating a queue
Revert "ALSA: line6: Only determine control port properties if needed"
ALSA: seq: Don't handle loop timeout at snd_seq_pool_done()
fixable, but at least one of the fixes is a little ugly. The original
bug has always been there, so we can wait another week or two to get
this right.
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Merge tag 'nfsd-4.10-3' of git://linux-nfs.org/~bfields/linux
Pull nfsd revert from Bruce Fields:
"This patch turned out to have a couple problems. The problems are
fixable, but at least one of the fixes is a little ugly. The original
bug has always been there, so we can wait another week or two to get
this right"
* tag 'nfsd-4.10-3' of git://linux-nfs.org/~bfields/linux:
nfsd: Revert "nfsd: special case truncates some more"
Four fixes from Ben:
- Userspace was semi-randomly segfaulting on radix due to us incorrectly
handling a fault triggered by autonuma, caused by a patch we merged earlier
in v4.10 to prevent the kernel executing userspace.
- We weren't marking host IPIs properly for KVM in the OPAL ICP backend.
- The ERAT flushing on radix was missing an isync and was incorrectly marked
as DD1 only.
- The powernv CPU hotplug code was missing a wakeup type and failing to flush
the interrupt correctly when using OPAL ICP.
Thanks to:
Benjamin Herrenschmidt.
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Merge tag 'powerpc-4.10-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes friom Michael Ellerman:
"Apologies for the late pull request, but Ben has been busy finding bugs.
- Userspace was semi-randomly segfaulting on radix due to us
incorrectly handling a fault triggered by autonuma, caused by a
patch we merged earlier in v4.10 to prevent the kernel executing
userspace.
- We weren't marking host IPIs properly for KVM in the OPAL ICP
backend.
- The ERAT flushing on radix was missing an isync and was incorrectly
marked as DD1 only.
- The powernv CPU hotplug code was missing a wakeup type and failing
to flush the interrupt correctly when using OPAL ICP
Thanks to Benjamin Herrenschmidt"
* tag 'powerpc-4.10-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/powernv: Properly set "host-ipi" on IPIs
powerpc/powernv: Fix CPU hotplug to handle waking on HVI
powerpc/mm/radix: Update ERAT flushes when invalidating TLB
powerpc/mm: Fix spurrious segfaults on radix with autonuma
udp_ioctl(), as its name suggests, is used by UDP protocols,
but is also used by L2TP :(
L2TP should use its own handler, because it really does not
look the same.
SIOCINQ for instance should not assume UDP checksum or headers.
Thanks to Andrey and syzkaller team for providing the report
and a nice reproducer.
While crashes only happen on recent kernels (after commit
7c13f97ffd ("udp: do fwd memory scheduling on dequeue")), this
probably needs to be backported to older kernels.
Fixes: 7c13f97ffd ("udp: do fwd memory scheduling on dequeue")
Fixes: 8558467201 ("udp: Fix udp_poll() and ioctl()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
rx_refill_timer should be deleted as soon as we disconnect from the
backend since otherwise it is possible for the timer to go off before
we get to xennet_destroy_queues(). If this happens we may dereference
queue->rx.sring which is set to NULL in xennet_disconnect_backend().
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
CC: stable@vger.kernel.org
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If a USB-to-serial adapter is unplugged, the driver re-initializes, with
dev->hard_header_len and dev->addr_len set to zero, instead of the correct
values. If then a packet is sent through the half-dead interface, the
kernel will panic due to running out of headroom in the skb when pushing
for the AX.25 headers resulting in this panic:
[<c0595468>] (skb_panic) from [<c0401f70>] (skb_push+0x4c/0x50)
[<c0401f70>] (skb_push) from [<bf0bdad4>] (ax25_hard_header+0x34/0xf4 [ax25])
[<bf0bdad4>] (ax25_hard_header [ax25]) from [<bf0d05d4>] (ax_header+0x38/0x40 [mkiss])
[<bf0d05d4>] (ax_header [mkiss]) from [<c041b584>] (neigh_compat_output+0x8c/0xd8)
[<c041b584>] (neigh_compat_output) from [<c043e7a8>] (ip_finish_output+0x2a0/0x914)
[<c043e7a8>] (ip_finish_output) from [<c043f948>] (ip_output+0xd8/0xf0)
[<c043f948>] (ip_output) from [<c043f04c>] (ip_local_out_sk+0x44/0x48)
This patch makes mkiss behave like the 6pack driver. 6pack does not
panic. In 6pack.c sp_setup() (same function name here) the values for
dev->hard_header_len and dev->addr_len are set to the same values as in
my mkiss patch.
[ralf@linux-mips.org: Massages original submission to conform to the usual
standards for patch submissions.]
Signed-off-by: Thomas Osterried <thomas@osterried.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes the device being used to DMA map skb->data.
Erroneous device assignment causes the crash when SMMU is enabled.
This happens during TX since buffer gets DMA mapped with device
correspondign to net_device and gets unmapped using the device
related to DSAF.
Signed-off-by: Kejian Yan <yankejian@huawei.com>
Reviewed-by: Yisen Zhuang <yisen.zhuang@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
