The EEE support has not been enabled on ENETC, but it may connect
to a PHY which supports EEE and advertises EEE by default, while
its link partner also advertises EEE. If this happens, the PHY enters
low power mode when the traffic rate is low and causes packet loss.
This patch disables EEE advertisement by default for any PHY that
ENETC connects to, to prevent the above unwanted outcome.
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Reviewed-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
msm-next:
- OCMEM support for a3xx and a4xx GPUs.
- a510 support + display support
core:
- mst payload deletion fix
i915:
- uapi alignment fix
- fix for power usage regression due to security fixes
- change default preemption timeout to 640ms from 100ms
- EHL voltage level display fixes
- TGL DGL PHY fix
- gvt - MI_ATOMIC cmd parser fix, CFL non-priv warning
- CI spotted deadlock fix
- EHL port D programming fix
amdgpu:
- VRAM lost fixes on BACO for CI/VI
- navi14 DC fixes
- misc SR-IOV, gfx10 fixes
- XGMI fixes for arcturus
- SRIOV fixes
amdkfd:
- KFD on ppc64le enabled
- page table optimisations
radeon:
- fix for r1xx/2xx register checker.
tegra:
- displayport regression fixes
- DMA API regression fixes
mgag200:
- fix devices that can't scanout except at 0 addr
omap:
- fix dma_addr refcounting
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Merge tag 'drm-next-2019-12-06' of git://anongit.freedesktop.org/drm/drm
Pull more drm updates from Dave Airlie:
"Rob pointed out I missed his pull request for msm-next, it's been in
next for a while outside of my tree so shouldn't cause any unexpected
issues, it has some OCMEM support in drivers/soc that is acked by
other maintainers as it's outside my tree.
Otherwise it's a usual fixes pull, i915, amdgpu, the main ones, with
some tegra, omap, mgag200 and one core fix.
Summary:
msm-next:
- OCMEM support for a3xx and a4xx GPUs.
- a510 support + display support
core:
- mst payload deletion fix
i915:
- uapi alignment fix
- fix for power usage regression due to security fixes
- change default preemption timeout to 640ms from 100ms
- EHL voltage level display fixes
- TGL DGL PHY fix
- gvt - MI_ATOMIC cmd parser fix, CFL non-priv warning
- CI spotted deadlock fix
- EHL port D programming fix
amdgpu:
- VRAM lost fixes on BACO for CI/VI
- navi14 DC fixes
- misc SR-IOV, gfx10 fixes
- XGMI fixes for arcturus
- SRIOV fixes
amdkfd:
- KFD on ppc64le enabled
- page table optimisations
radeon:
- fix for r1xx/2xx register checker.
tegra:
- displayport regression fixes
- DMA API regression fixes
mgag200:
- fix devices that can't scanout except at 0 addr
omap:
- fix dma_addr refcounting"
* tag 'drm-next-2019-12-06' of git://anongit.freedesktop.org/drm/drm: (100 commits)
drm/dp_mst: Correct the bug in drm_dp_update_payload_part1()
drm/omap: fix dma_addr refcounting
drm/tegra: Run hub cleanup on ->remove()
drm/tegra: sor: Make the +5V HDMI supply optional
drm/tegra: Silence expected errors on IOMMU attach
drm/tegra: vic: Export module device table
drm/tegra: sor: Implement system suspend/resume
drm/tegra: Use proper IOVA address for cursor image
drm/tegra: gem: Remove premature import restrictions
drm/tegra: gem: Properly pin imported buffers
drm/tegra: hub: Remove bogus connection mutex check
ia64: agp: Replace empty define with do while
agp: Add bridge parameter documentation
agp: remove unused variable num_segments
agp: move AGPGART_MINOR to include/linux/miscdevice.h
agp: remove unused variable size in agp_generic_create_gatt_table
drm/dp_mst: Fix build on systems with STACKTRACE_SUPPORT=n
drm/radeon: fix r1xx/r2xx register checker for POT textures
drm/amdgpu: fix GFX10 missing CSIB set(v3)
drm/amdgpu: should stop GFX ring in hw_fini
...
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Merge tag 'for-linus-20191205' of git://git.kernel.dk/linux-block
Pull more block and io_uring updates from Jens Axboe:
"I wasn't expecting this to be so big, and if I was, I would have used
separate branches for this. Going forward I'll be doing separate
branches for the current tree, just like for the next kernel version
tree. In any case, this contains:
- Series from Christoph that fixes an inherent race condition with
zoned devices and revalidation.
- null_blk zone size fix (Damien)
- Fix for a regression in this merge window that caused busy spins by
sending empty disk uevents (Eric)
- Fix for a regression in this merge window for bfq stats (Hou)
- Fix for io_uring creds allocation failure handling (me)
- io_uring -ERESTARTSYS send/recvmsg fix (me)
- Series that fixes the need for applications to retain state across
async request punts for io_uring. This one is a bit larger than I
would have hoped, but I think it's important we get this fixed for
5.5.
- connect(2) improvement for io_uring, handling EINPROGRESS instead
of having applications needing to poll for it (me)
- Have io_uring use a hash for poll requests instead of an rbtree.
This turned out to work much better in practice, so I think we
should make the switch now. For some workloads, even with a fair
amount of cancellations, the insertion sort is just too expensive.
(me)
- Various little io_uring fixes (me, Jackie, Pavel, LimingWu)
- Fix for brd unaligned IO, and a warning for the future (Ming)
- Fix for a bio integrity data leak (Justin)
- bvec_iter_advance() improvement (Pavel)
- Xen blkback page unmap fix (SeongJae)
The major items in here are all well tested, and on the liburing side
we continue to add regression and feature test cases. We're up to 50
topic cases now, each with anywhere from 1 to more than 10 cases in
each"
* tag 'for-linus-20191205' of git://git.kernel.dk/linux-block: (33 commits)
block: fix memleak of bio integrity data
io_uring: fix a typo in a comment
bfq-iosched: Ensure bio->bi_blkg is valid before using it
io_uring: hook all linked requests via link_list
io_uring: fix error handling in io_queue_link_head
io_uring: use hash table for poll command lookups
io-wq: clear node->next on list deletion
io_uring: ensure deferred timeouts copy necessary data
io_uring: allow IO_SQE_* flags on IORING_OP_TIMEOUT
null_blk: remove unused variable warning on !CONFIG_BLK_DEV_ZONED
brd: warn on un-aligned buffer
brd: remove max_hw_sectors queue limit
xen/blkback: Avoid unmapping unmapped grant pages
io_uring: handle connect -EINPROGRESS like -EAGAIN
block: set the zone size in blk_revalidate_disk_zones atomically
block: don't handle bio based drivers in blk_revalidate_disk_zones
block: allocate the zone bitmaps lazily
block: replace seq_zones_bitmap with conv_zones_bitmap
block: simplify blkdev_nr_zones
block: remove the empty line at the end of blk-zoned.c
...
Pull vfs d_inode/d_flags memory ordering fixes from Al Viro:
"Fallout from tree-wide audit for ->d_inode/->d_flags barriers use.
Basically, the problem is that negative pinned dentries require
careful treatment - unless ->d_lock is locked or parent is held at
least shared, another thread can make them positive right under us.
Most of the uses turned out to be safe - the main surprises as far as
filesystems are concerned were
- race in dget_parent() fastpath, that might end up with the caller
observing the returned dentry _negative_, due to insufficient
barriers. It is positive in memory, but we could end up seeing the
wrong value of ->d_inode in CPU cache. Fixed.
- manual checks that result of lookup_one_len_unlocked() is positive
(and rejection of negatives). Again, insufficient barriers (we
might end up with inconsistent observed values of ->d_inode and
->d_flags). Fixed by switching to a new primitive that does the
checks itself and returns ERR_PTR(-ENOENT) instead of a negative
dentry. That way we get rid of boilerplate converting negatives
into ERR_PTR(-ENOENT) in the callers and have a single place to
deal with the barrier-related mess - inside fs/namei.c rather than
in every caller out there.
The guts of pathname resolution *do* need to be careful - the race
found by Ritesh is real, as well as several similar races.
Fortunately, it turns out that we can take care of that with fairly
local changes in there.
The tree-wide audit had not been fun, and I hate the idea of repeating
it. I think the right approach would be to annotate the places where
we are _not_ guaranteed ->d_inode/->d_flags stability and have sparse
catch regressions. But I'm still not sure what would be the least
invasive way of doing that and it's clearly the next cycle fodder"
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fs/namei.c: fix missing barriers when checking positivity
fix dget_parent() fastpath race
new helper: lookup_positive_unlocked()
fs/namei.c: pull positivity check into follow_managed()
ARM-based SoCs, please pull the following:
- Nicolas declares a CMA area within the first 1GB of DRAM in order for
it to be guaranteed to reside there, otherwise ARM64's memory
initialization will pick up a CMA area within ZONE_DMA32
- Stefan adds the Device Tree node for the built-in Ethernet controller
(GENET) on the Raspberry Pi 4 model B board
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Merge tag 'arm-soc/for-5.5/devicetree-part2' of https://github.com/Broadcom/stblinux into arm/fixes
This pull request contains the second batch of changes for Broadcom
ARM-based SoCs, please pull the following:
- Nicolas declares a CMA area within the first 1GB of DRAM in order for
it to be guaranteed to reside there, otherwise ARM64's memory
initialization will pick up a CMA area within ZONE_DMA32
- Stefan adds the Device Tree node for the built-in Ethernet controller
(GENET) on the Raspberry Pi 4 model B board
* tag 'arm-soc/for-5.5/devicetree-part2' of https://github.com/Broadcom/stblinux:
ARM: dts: bcm2711-rpi-4: Enable GENET support
ARM: dts: bcm2711: force CMA into first GB of memory
Link: https://lore.kernel.org/r/20191118182931.11884-1-f.fainelli@gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
This contains a fix for a kernel panic that can occur on suspend if EMC
timings are not available in device tree.
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Merge tag 'tegra-for-5.5-memory-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/fixes
memory: tegra: Fixes for v5.5-rc1
This contains a fix for a kernel panic that can occur on suspend if EMC
timings are not available in device tree.
* tag 'tegra-for-5.5-memory-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
memory: tegra30-emc: Fix panic on suspend
Link: https://lore.kernel.org/r/20191204130753.3614278-1-thierry.reding@gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
Fixes a regression for wake events on Tegra194 caused by the Tegra210
support that was added in v5.5-rc1 as well as wrong reset sources and
levels on Tegra194.
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Merge tag 'tegra-for-5.5-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/fixes
soc/tegra: Fixes for v5.5-rc1
Fixes a regression for wake events on Tegra194 caused by the Tegra210
support that was added in v5.5-rc1 as well as wrong reset sources and
levels on Tegra194.
* tag 'tegra-for-5.5-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
soc/tegra: pmc: Add reset sources and levels on Tegra194
soc/tegra: pmc: Add missing IRQ callbacks on Tegra194
soc/tegra: pmc: Use lower-case for hexadecimal literals
Link: https://lore.kernel.org/r/20191204130753.3614278-2-thierry.reding@gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
Implements support for suspend/resume on Tegra124.
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Merge tag 'tegra-for-5.5-cpufreq' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/fixes
cpufreq: tegra: Changes for v5.5-rc1
Implements support for suspend/resume on Tegra124.
* tag 'tegra-for-5.5-cpufreq' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
cpufreq: tegra124: Add suspend and resume support
Link: https://lore.kernel.org/r/20191204130753.3614278-3-thierry.reding@gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
This series of changes contains fixes for few SoC and board specific
issues that would be good to have merged for v5.5-rc1:
- Fix incorrect MMC card detection polarity for omap3-tao3530
- Fix wrong am57xx-beagle-x15 pinmux named states for eMMC
- Fix dra7 cpsw mdio clock that causes wrong speed
- Fix vcsi for droid4 so it won't get turned off after init
- Fix rev and sysconfig register offsets for omap4 sgx so it can idle
Then there are also two minor late changes to logicpd-torpedo-baseboard
to configure 1-wire HDQ for battery stats, and remove out of date
workaround comments no longer needed.
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Merge tag 'omap-for-v5.5/dt-fixes-merge-window-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/fixes
Device tree fixes for omap variants for for v5.5 merge window
This series of changes contains fixes for few SoC and board specific
issues that would be good to have merged for v5.5-rc1:
- Fix incorrect MMC card detection polarity for omap3-tao3530
- Fix wrong am57xx-beagle-x15 pinmux named states for eMMC
- Fix dra7 cpsw mdio clock that causes wrong speed
- Fix vcsi for droid4 so it won't get turned off after init
- Fix rev and sysconfig register offsets for omap4 sgx so it can idle
Then there are also two minor late changes to logicpd-torpedo-baseboard
to configure 1-wire HDQ for battery stats, and remove out of date
workaround comments no longer needed.
* tag 'omap-for-v5.5/dt-fixes-merge-window-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: dts: Fix sgx sysconfig register for omap4
ARM: dts: Fix vcsi regulator to be always-on for droid4 to prevent hangs
ARM: dts: dra7: fix cpsw mdio fck clock
ARM: dts: am57xx-beagle-x15: Update pinmux name to ddr_3_3v
ARM: dts: omap3-tao3530: Fix incorrect MMC card detection GPIO polarity
ARM: dts: logicpd-torpedo: Remove unnecessary notes/comments
ARM: dts: logicpd-torpedo-baseboard: Enable HDQ
Link: https://lore.kernel.org/r/pull-1574870758-237468@atomide.com
Signed-off-by: Olof Johansson <olof@lixom.net>
Just few minor changes that can be merged when suitable, but would
be good to have these in v5.5-rc1 to remove dependencies between branches
for more changes later on in v5.6:
- Add quirk handling for AESS (Audio Engine Sub System)
- We want to drop the useless gptimer option for omap4 as there are local
timers
- A minor error path handling improvment for sysc_child_add_named_clock()
that will make further patching a bit easier
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Merge tag 'omap-for-v5.5/ti-sysc-late-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/fixes
Few ti-sysc related fixes for v5.5 merge window
Just few minor changes that can be merged when suitable, but would
be good to have these in v5.5-rc1 to remove dependencies between branches
for more changes later on in v5.6:
- Add quirk handling for AESS (Audio Engine Sub System)
- We want to drop the useless gptimer option for omap4 as there are local
timers
- A minor error path handling improvment for sysc_child_add_named_clock()
that will make further patching a bit easier
* tag 'omap-for-v5.5/ti-sysc-late-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
bus: ti-sysc: Adjust exception handling in sysc_child_add_named_clock()
ARM: OMAP2+: Drop useless gptimer option for omap4
bus: ti-sysc: Add module enable quirk for audio AESS
Link: https://lore.kernel.org/r/pull-1574273726-31367@atomide.com
Signed-off-by: Olof Johansson <olof@lixom.net>
Commit fd7d58f0db ("ARM: multi_v7_defconfig: renormalize based on recent
additions") removed explicit enable line for CONFIG_DEBUG_FS, because
that feature has been selected by other enabled options: CONFIG_TRACING,
which were enabled by CONFIG_PERF_EVENTS.
In meantime, commit 0e4a459f56 ("tracing: Remove unnecessary DEBUG_FS
dependency") removed the dependency between CONFIG_DEBUG_FS and
CONFIG_TRACING, so CONFIG_DEBUG_FS is no longer enabled in default builds.
Enable it again explicitly, as debugfs support is essential for various
automated testing tools.
Link: https://lore.kernel.org/r/20191206125112.11006-1-m.szyprowski@samsung.com
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Stack overflow checking can be done by testing sp & (1 << THREAD_SHIFT)
only for the stacks are aligned to (2 << THREAD_SHIFT) with size of
(1 << THREAD_SIZE), and this is the case when CONFIG_VMAP_STACK is set.
Fix the code comment to avoid confusion.
Cc: Will Deacon <will@kernel.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Heyi Guo <guoheyi@huawei.com>
[catalin.marinas@arm.com: Updated comment following Mark's suggestion]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
When I tweaked the ftrace entry assembly in commit:
3b23e4991f ("arm64: implement ftrace with regs")
... my ifdeffery tweaks left ftrace_graph_caller undefined for
CONFIG_DYNAMIC_FTRACE && CONFIG_FUNCTION_GRAPH_TRACER when ftrace is
based on mcount.
The kbuild test robot reported that this issue is detected at link time:
| arch/arm64/kernel/entry-ftrace.o: In function `skip_ftrace_call':
| arch/arm64/kernel/entry-ftrace.S:238: undefined reference to `ftrace_graph_caller'
| arch/arm64/kernel/entry-ftrace.S:238:(.text+0x3c): relocation truncated to fit: R_AARCH64_CONDBR19 against undefined symbol
| `ftrace_graph_caller'
| arch/arm64/kernel/entry-ftrace.S:243: undefined reference to `ftrace_graph_caller'
| arch/arm64/kernel/entry-ftrace.S:243:(.text+0x54): relocation truncated to fit: R_AARCH64_CONDBR19 against undefined symbol
| `ftrace_graph_caller'
This patch fixes the ifdeffery so that the mcount version of
ftrace_graph_caller doesn't depend on CONFIG_DYNAMIC_FTRACE. At the same
time, a redundant #else is removed from the ifdeffery for the
patchable-function-entry version of ftrace_graph_caller.
Fixes: 3b23e4991f ("arm64: implement ftrace with regs")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Amit Daniel Kachhap <amit.kachhap@arm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Torsten Duwe <duwe@lst.de>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
compute_layout() is invoked as part of an alternative fixup under
stop_machine(). This function invokes get_random_long() which acquires a
sleeping lock on -RT which can not be acquired in this context.
Rename compute_layout() to kvm_compute_layout() and invoke it before
stop_machine() applies the alternatives. Add a __init prefix to
kvm_compute_layout() because the caller has it, too (and so the code can be
discarded after boot).
Reviewed-by: James Morse <james.morse@arm.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
__range_ok(), invoked from access_ok(), clears the tag of the user
address only if CONFIG_ARM64_TAGGED_ADDR_ABI is enabled and the thread
opted in to the relaxed ABI. The latter sets the TIF_TAGGED_ADDR thread
flag. In the case of asynchronous I/O (e.g. io_submit()), the
access_ok() may be called from a kernel thread. Since kernel threads
don't have TIF_TAGGED_ADDR set, access_ok() will fail for valid tagged
user addresses. Example from the ffs_user_copy_worker() thread:
use_mm(io_data->mm);
ret = ffs_copy_to_iter(io_data->buf, ret, &io_data->data);
unuse_mm(io_data->mm);
Relax the __range_ok() check to always untag the user address if called
in the context of a kernel thread. The user pointers would have already
been checked via aio_setup_rw() -> import_{single_range,iovec}() at the
time of the asynchronous I/O request.
Fixes: 63f0c60379 ("arm64: Introduce prctl() options to control the tagged user addresses ABI")
Cc: <stable@vger.kernel.org> # 5.4.x-
Cc: Will Deacon <will@kernel.org>
Reported-by: Evgenii Stepanov <eugenis@google.com>
Tested-by: Evgenii Stepanov <eugenis@google.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Commit ca74b316df ("arm: Use common cpu_topology structure and
functions.") changed cpu_coregroup_mask() from the ARM32 specific
implementation in arch/arm/include/asm/topology.h to the one shared
with ARM64 and RISCV in drivers/base/arch_topology.c.
Currently on ARM32 (TC2 w/ CONFIG_SCHED_MC) the task scheduler setup
code (w/ CONFIG_SCHED_DEBUG) shows this during CPU hotplug:
ERROR: groups don't span domain->span
It happens to CPUs of the cluster of the CPU which gets hot-plugged
out on scheduler domain MC.
Turns out that the shared cpu_coregroup_mask() requires that the
hot-plugged CPU is removed from the core_sibling mask via
remove_cpu_topology(). Otherwise the 'is core_sibling subset of
cpumask_of_node()' doesn't work. In this case the task scheduler has to
deal with cpumask_of_node instead of core_sibling which is wrong on
scheduler domain MC.
e.g. CPU3 hot-plugged out on TC2 [cluster0: 0,3-4 cluster1: 1-2]:
cpu_coregroup_mask(): CPU3 cpumask_of_node=0-2,4 core_sibling=0,3-4
^
should be:
cpu_coregroup_mask(): CPU3 cpumask_of_node=0-2,4 core_sibling=0,4
Add remove_cpu_topology() to __cpu_disable() to remove the CPU from the
topology masks in case of a CPU hotplug out operation.
At the same time tweak store_cpu_topology() slightly so it will call
update_siblings_masks() in case of CPU hotplug in operation via
secondary_start_kernel()->smp_store_cpu_info().
This aligns the ARM32 implementation with the ARM64 one.
Guarding remove_cpu_topology() with CONFIG_GENERIC_ARCH_TOPOLOGY is
necessary since some Arm32 defconfigs (aspeed_g5_defconfig,
milbeaut_m10v_defconfig, spear13xx_defconfig) specify an explicit
# CONFIG_ARM_CPU_TOPOLOGY is not set
w/ ./arch/arm/Kconfig: select GENERIC_ARCH_TOPOLOGY if ARM_CPU_TOPOLOGY
Fixes: ca74b316df ("arm: Use common cpu_topology structure and functions")
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Tested-by: Lukasz Luba <lukasz.luba@arm.com>
Tested-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Alexei Starovoitov says:
====================
pull-request: bpf 2019-12-05
The following pull-request contains BPF updates for your *net* tree.
We've added 6 non-merge commits during the last 1 day(s) which contain
a total of 14 files changed, 116 insertions(+), 37 deletions(-).
The main changes are:
1) three selftests fixes, from Stanislav.
2) one samples fix, from Jesper.
3) one verifier fix, from Yonghong.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
* io_uring-5.5:
io_uring: fix a typo in a comment
io_uring: hook all linked requests via link_list
io_uring: fix error handling in io_queue_link_head
io_uring: use hash table for poll command lookups
Pull autofs updates from Al Viro:
"autofs misuses checks for ->d_subdirs emptiness; the cursors are in
the same lists, resulting in false negatives. It's not needed anyway,
since autofs maintains counter in struct autofs_info, containing 0 for
removed ones, 1 for live symlinks and 1 + number of children for live
directories, which is precisely what we need for those checks.
This series switches to use of that counter and untangles the crap
around its uses (it needs not be atomic and there's a bunch of
completely pointless "defensive" checks).
This fell out of dcache_readdir work; the main point is to get rid of
->d_subdirs abuses in there. I've more followup cleanups, but I hadn't
run those by Ian yet, so they can go next cycle"
* 'next.autofs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
autofs: don't bother with atomics for ino->count
autofs_dir_rmdir(): check ino->count for deciding whether it's empty...
autofs: get rid of pointless checks around ->count handling
autofs_clear_leaf_automount_flags(): use ino->count instead of ->d_subdirs
Merge two fixes for the pipe rework from David Howells:
"Here are a couple of patches to fix bugs syzbot found in the pipe
changes:
- An assertion check will sometimes trip when polling a pipe because
the ring size and indices used are approximate and may be being
changed simultaneously.
An equivalent approximate calculation was done previously, but
without the assertion check, so I've just dropped the check. To
make it accurate, the pipe mutex would need to be taken or the spin
lock could be used - but usage of the spinlock would need to be
rolled out into splice, iov_iter and other places for that.
- The index mask and the max_usage values cannot be cached across
pipe_wait() as F_SETPIPE_SZ could have been called during the wait.
This can cause pipe_write() to break"
* pipe-rework:
pipe: Fix missing mask update after pipe_wait()
pipe: Remove assertion from pipe_poll()
Fix pipe_write() to not cache the ring index mask and max_usage as their
values are invalidated by calling pipe_wait() because the latter
function drops the pipe lock, thereby allowing F_SETPIPE_SZ change them.
Without this, pipe_write() may subsequently miscalculate the array
indices and pipe fullness, leading to an oops like the following:
BUG: KASAN: slab-out-of-bounds in pipe_write+0xc25/0xe10 fs/pipe.c:481
Write of size 8 at addr ffff8880771167a8 by task syz-executor.3/7987
...
CPU: 1 PID: 7987 Comm: syz-executor.3 Not tainted 5.4.0-rc2-syzkaller #0
...
Call Trace:
pipe_write+0xc25/0xe10 fs/pipe.c:481
call_write_iter include/linux/fs.h:1895 [inline]
new_sync_write+0x3fd/0x7e0 fs/read_write.c:483
__vfs_write+0x94/0x110 fs/read_write.c:496
vfs_write+0x18a/0x520 fs/read_write.c:558
ksys_write+0x105/0x220 fs/read_write.c:611
__do_sys_write fs/read_write.c:623 [inline]
__se_sys_write fs/read_write.c:620 [inline]
__x64_sys_write+0x6e/0xb0 fs/read_write.c:620
do_syscall_64+0xca/0x5d0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
This is not a problem for pipe_read() as the mask is recalculated on
each pass of the loop, after pipe_wait() has been called.
Fixes: 8cefc107ca ("pipe: Use head and tail pointers for the ring, not cursor and length")
Reported-by: syzbot+838eb0878ffd51f27c41@syzkaller.appspotmail.com
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Eric Biggers <ebiggers@kernel.org>
[ Changed it to use a temporary variable 'mask' to avoid long lines -Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
An assertion check was added to pipe_poll() to make sure that the ring
occupancy isn't seen to overflow the ring size. However, since no locks
are held when the three values are read, it is possible for F_SETPIPE_SZ
to intervene and muck up the calculation, thereby causing the oops.
Fix this by simply removing the assertion and accepting that the
calculation might be approximate.
Note that the previous code also had a similar issue, though there was
no assertion check, since the occupancy counter and the ring size were
not read with a lock held, so it's possible that the poll check might
have malfunctioned then too.
Also wake up all the waiters so that they can reissue their checks if
there was a competing read or write.
Fixes: 8cefc107ca ("pipe: Use head and tail pointers for the ring, not cursor and length")
Reported-by: syzbot+d37abaade33a934f16f2@syzkaller.appspotmail.com
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
sock_fprog_kern::len is in units of struct sock_filter, not bytes.
Fixes: 3e859adf36 ("compat_ioctl: unify copy-in of ppp filters")
Reported-by: syzbot+eb853b51b10f1befa0b7@syzkaller.appspotmail.com
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Huazhong Tan says:
====================
net: hns3: fixes for -net
This patchset includes misc fixes for the HNS3 ethernet driver.
[patch 1/3] fixes a TX queue not restarted problem.
[patch 2/3] fixes a use-after-free issue.
[patch 3/3] fixes a VF ID issue for setting VF VLAN.
change log:
V1->V2: keeps 'ring' as parameter in hns3_nic_maybe_stop_tx()
in [patch 1/3], suggestted by David.
rewrites [patch 2/3]'s commit log to make it be easier
to understand, suggestted by David.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Previously, when set VF VLAN with command "ip link set <pf name>
vf <vf id> vlan <vlan id>", the VF ID 0 is handled as PF incorrectly,
which should be the first VF. This patch fixes it.
Fixes: 21e043cd81 ("net: hns3: fix set port based VLAN for PF")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently, hns3_nic_maybe_stop_tx() uses skb_copy() to linearize a
SKB if the BD num required by the SKB does not meet the hardware
limitation, and it linearizes the SKB by allocating a new linearized SKB
and freeing the old SKB, if hns3_nic_maybe_stop_tx() returns -EBUSY
because there are no enough space in the ring to send the linearized
skb to hardware, the sch_direct_xmit() still hold reference to old SKB
and try to retransmit the old SKB when dev_hard_start_xmit() return
TX_BUSY, which may cause use after freed problem.
This patch fixes it by using __skb_linearize() to linearize the
SKB in hns3_nic_maybe_stop_tx().
Fixes: 51e8439f34 ("net: hns3: add 8 BD limit for tx flow")
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There is timing window between ring_space checking and
netif_stop_subqueue when transmiting a SKB, and the TX BD
cleaning may be executed during the time window, which may
caused TX queue not restarted problem.
This patch fixes it by rechecking the ring_space after
netif_stop_subqueue to make sure TX queue is restarted.
Also, the ring->next_to_clean is updated even when pkts is
zero, because all the TX BD cleaned may be non-SKB, so it
needs to check if TX queue need to be restarted.
Fixes: 76ad4f0ee7 ("net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC")
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Replace "select NET_SWITCHDEV" vs "depends on NET_SWITCHDEV" to fix Kconfig
warning with CONFIG_COMPILE_TEST=y
WARNING: unmet direct dependencies detected for NET_SWITCHDEV
Depends on [n]: NET [=y] && INET [=n]
Selected by [y]:
- TI_CPSW_SWITCHDEV [=y] && NETDEVICES [=y] && ETHERNET [=y] && NET_VENDOR_TI [=y] && (ARCH_DAVINCI || ARCH_OMAP2PLUS || COMPILE_TEST [=y])
because TI_CPSW_SWITCHDEV blindly selects NET_SWITCHDEV even though
INET is not set/enabled, while NET_SWITCHDEV depends on INET.
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Fixes: ed3525eda4 ("net: ethernet: ti: introduce cpsw switchdev based driver part 1 - dual-emac")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Signed-off-by: David S. Miller <davem@davemloft.net>
This is mostly to reorder the entries as they've moved in the Kconfig
hierarchies. Doing this periodically (but not very often) simplifies
conflict resolution for new options, etc.
Link: https://lore.kernel.org/r/20191205211438.27552-2-olof@lixom.net
Signed-off-by: Olof Johansson <olof@lixom.net>
This is mostly to reorder the entries as they've moved in the Kconfig
hierarchies. Doing this periodically (but not very often) simplifies
conflict resolution for new options, etc.
Link: https://lore.kernel.org/r/20191205211438.27552-3-olof@lixom.net
Signed-off-by: Olof Johansson <olof@lixom.net>
Bob's extensive filesystem withdrawal and recovery testing:
- Don't write log headers after file system withdraw
- clean up iopen glock mess in gfs2_create_inode
- Close timing window with GLF_INVALIDATE_IN_PROGRESS
- Abort gfs2_freeze if io error is seen
- Don't loop forever in gfs2_freeze if withdrawn
- fix infinite loop in gfs2_ail1_flush on io error
- Introduce function gfs2_withdrawn
- fix glock reference problem in gfs2_trans_remove_revoke
Filesystems with a block size smaller than the page size:
- Fix end-of-file handling in gfs2_page_mkwrite
- Improve mmap write vs. punch_hole consistency
Other:
- Remove active journal side effect from gfs2_write_log_header
- Multi-block allocations in gfs2_page_mkwrite
Minor cleanups and coding style fixes:
- Remove duplicate call from gfs2_create_inode
- make gfs2_log_shutdown static
- make gfs2_fs_parameters static
- Some whitespace cleanups
- removed unnecessary semicolon
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Merge tag 'gfs2-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull GFS2 updates from Andreas Gruenbacher:
"Bob's extensive filesystem withdrawal and recovery testing:
- don't write log headers after file system withdraw
- clean up iopen glock mess in gfs2_create_inode
- close timing window with GLF_INVALIDATE_IN_PROGRESS
- abort gfs2_freeze if io error is seen
- don't loop forever in gfs2_freeze if withdrawn
- fix infinite loop in gfs2_ail1_flush on io error
- introduce function gfs2_withdrawn
- fix glock reference problem in gfs2_trans_remove_revoke
Filesystems with a block size smaller than the page size:
- fix end-of-file handling in gfs2_page_mkwrite
- improve mmap write vs. punch_hole consistency
Other:
- remove active journal side effect from gfs2_write_log_header
- multi-block allocations in gfs2_page_mkwrite
Minor cleanups and coding style fixes:
- remove duplicate call from gfs2_create_inode
- make gfs2_log_shutdown static
- make gfs2_fs_parameters static
- some whitespace cleanups
- removed unnecessary semicolon"
* tag 'gfs2-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
gfs2: Don't write log headers after file system withdraw
gfs2: Remove duplicate call from gfs2_create_inode
gfs2: clean up iopen glock mess in gfs2_create_inode
gfs2: Close timing window with GLF_INVALIDATE_IN_PROGRESS
gfs2: Abort gfs2_freeze if io error is seen
gfs2: Don't loop forever in gfs2_freeze if withdrawn
gfs2: fix infinite loop in gfs2_ail1_flush on io error
gfs2: Introduce function gfs2_withdrawn
gfs2: fix glock reference problem in gfs2_trans_remove_revoke
gfs2: make gfs2_log_shutdown static
gfs2: Remove active journal side effect from gfs2_write_log_header
gfs2: Fix end-of-file handling in gfs2_page_mkwrite
gfs2: Multi-block allocations in gfs2_page_mkwrite
gfs2: Improve mmap write vs. punch_hole consistency
gfs2: make gfs2_fs_parameters static
gfs2: Some whitespace cleanups
gfs2: removed unnecessary semicolon
This brings in the mainline tree right after armsoc contents was merged
this release cycle, so that we can re-run savedefconfig, etc.
Signed-off-by: Olof Johansson <olof@lixom.net>
mappings are handled and a conversion to the new mount API (slightly
complicated by the fact that we had a common option parsing framework
that called out into rbd and the filesystem instead of them calling
into it). Also included a few scattered fixes and a MAINTAINERS update
for rbd, adding Dongsheng as a reviewer.
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Merge tag 'ceph-for-5.5-rc1' of git://github.com/ceph/ceph-client
Pull ceph updates from Ilya Dryomov:
"The two highlights are a set of improvements to how rbd read-only
mappings are handled and a conversion to the new mount API (slightly
complicated by the fact that we had a common option parsing framework
that called out into rbd and the filesystem instead of them calling
into it).
Also included a few scattered fixes and a MAINTAINERS update for rbd,
adding Dongsheng as a reviewer"
* tag 'ceph-for-5.5-rc1' of git://github.com/ceph/ceph-client:
libceph, rbd, ceph: convert to use the new mount API
rbd: ask for a weaker incompat mask for read-only mappings
rbd: don't query snapshot features
rbd: remove snapshot existence validation code
rbd: don't establish watch for read-only mappings
rbd: don't acquire exclusive lock for read-only mappings
rbd: disallow read-write partitions on images mapped read-only
rbd: treat images mapped read-only seriously
rbd: introduce RBD_DEV_FLAG_READONLY
rbd: introduce rbd_is_snap()
ceph: don't leave ino field in ceph_mds_request_head uninitialized
ceph: tone down loglevel on ceph_mdsc_build_path warning
rbd: update MAINTAINERS info
ceph: fix geting random mds from mdsmap
rbd: fix spelling mistake "requeueing" -> "requeuing"
ceph: make several helper accessors take const pointers
libceph: drop unnecessary check from dispatch() in mon_client.c
In cited commit, when prio tag mode is enabled, FTE creation fails
due to missing group with valid match criteria.
Hence,
(a) create prio tag group metadata_prio_tag_grp when prio tag is
enabled with match criteria for vlan push FTE.
(b) Rename metadata_grp to metadata_allmatch_grp to reflect its purpose.
Also when priority tag is enabled, delete metadata settings after
deleting ingress rules, which are using it.
Tide up rest of the ingress config code for unnecessary labels.
Fixes: 10652f3994 ("net/mlx5: Refactor ingress acl configuration")
Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Eli Britstein <elibr@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
When setting speed to 100G via ethtool (AN is set to off), only 25G*4 is
configured while the user, who has an advanced HW which supports
extended PTYS, expects also 50G*2 to be configured.
With this patch, when extended PTYS mode is available, configure
PTYS via extended fields.
Fixes: 4b95840a6c ("net/mlx5e: Fix matching of speed to PRM link modes")
Signed-off-by: Aya Levin <ayal@mellanox.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Add a missing value in translation of PTYS ext_eth_proto_oper to its
corresponding speed. When ext_eth_proto_oper bit 10 is set, ethtool
shows unknown speed. With this fix, ethtool shows speed is 100G as
expected.
Fixes: a08b4ed137 ("net/mlx5: Add support to ext_* fields introduced in Port Type and Speed register")
Signed-off-by: Aya Levin <ayal@mellanox.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
It could be neigh update flow took a refcount on peer flow so
sometimes we cannot release peer flow even if parent flow is
being freed now.
Fixes: 5a7e5bcb66 ("net/mlx5e: Extend tc flow struct with reference counter")
Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Eli Britstein <elibr@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Flows are allocated with kzalloc() so free with kfree().
Fixes: 04de7dda73 ("net/mlx5e: Infrastructure for duplicated offloading of TC flows")
Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Eli Britstein <elibr@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
SFF 8472 eeprom length is 512 bytes. Fix module info return value to
support 512 bytes read.
Fixes: ace329f4ab ("net/mlx5e: ethtool, Remove unsupported SFP EEPROM high pages query")
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Reviewed-by: Aya Levin <ayal@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
When the user changes prio2buffer mapping while global pause is
enabled, mlx5 driver incorrectly sets all active buffers
(buffer that has at least one priority mapped) to lossy.
Solution:
If global pause is enabled, set all the active buffers to lossless
in prio2buffer command.
Also, add error message when buffer size is not enough to meet
xoff threshold.
Fixes: 0696d60853 ("net/mlx5e: Receive buffer configuration")
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Cited patch changed (channel index, tc) => (TXQ index) mapping to be a
static one, in order to keep indices consistent when changing number of
channels or TCs.
For 32 channels (OOB) and 8 TCs, real num of TXQs is 256.
When reducing the amount of channels to 8, the real num of TXQs will be
changed to 64.
This indices method is buggy:
- Channel #0, TC 3, the TXQ index is 96.
- Index 8 is not valid, as there is no such TXQ from driver perspective
(As it represents channel #8, TC 0, which is not valid with the above
configuration).
As part of driver's select queue, it calls netdev_pick_tx which returns an
index in the range of real number of TXQs. Depends on the return value,
with the examples above, driver could have returned index larger than the
real number of tx queues, or crash the kernel as it tries to read invalid
address of SQ which was not allocated.
Fix that by allocating sequential TXQ indices, and hold a new mapping
between (channel index, tc) => (real TXQ index). This mapping will be
updated as part of priv channels activation, and is used in
mlx5e_select_queue to find the selected queue index.
The existing indices mapping (channel_tc2txq) is no longer needed, as it
is used only for statistics structures and can be calculated on run time.
Delete its definintion and updates.
Fixes: 8bfaf07f78 ("net/mlx5e: Present SW stats when state is not opened")
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
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Merge tag 'fuse-update-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse update from Miklos Szeredi:
- Fix a regression introduced in the last release
- Fix a number of issues with validating data coming from userspace
- Some cleanups in virtiofs
* tag 'fuse-update-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: fix Kconfig indentation
fuse: fix leak of fuse_io_priv
virtiofs: Use completions while waiting for queue to be drained
virtiofs: Do not send forget request "struct list_head" element
virtiofs: Use a common function to send forget
virtiofs: Fix old-style declaration
fuse: verify nlink
fuse: verify write return
fuse: verify attributes
Summary of modules changes for the 5.5 merge window:
- Refactor include/linux/export.h and remove code duplication between
EXPORT_SYMBOL and EXPORT_SYMBOL_NS to make it more readable. The most
notable change is that no namespace is represented by an empty string ""
rather than NULL.
- Fix a module load/unload race where waiter(s) trying to load the same
module weren't being woken up when a module finally goes away.
Signed-off-by: Jessica Yu <jeyu@kernel.org>
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Merge tag 'modules-for-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
Pull modules updates from Jessica Yu:
"Summary of modules changes for the 5.5 merge window:
- Refactor include/linux/export.h and remove code duplication between
EXPORT_SYMBOL and EXPORT_SYMBOL_NS to make it more readable.
The most notable change is that no namespace is represented by an
empty string "" rather than NULL.
- Fix a module load/unload race where waiter(s) trying to load the
same module weren't being woken up when a module finally goes away"
* tag 'modules-for-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
kernel/module.c: wakeup processes in module_wq on module unload
moduleparam: fix parameter description mismatch
export: avoid code duplication in include/linux/export.h
Julian Wiedmann says:
====================
s390/qeth: fixes 2019-12-05
please apply the following fixes to your net tree.
The first two patches target the RX data path, the third fixes a memory
leak when shutting down a qeth device.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The cio layer's intparm logic does not align itself well with how qeth
manages cmd IOs. When an active IO gets terminated via halt/clear, the
corresponding IRQ's intparm does not reflect the cmd buffer but rather
the intparm that was passed to ccw_device_halt() / ccw_device_clear().
This behaviour was recently clarified in
commit b91d9e67e5 ("s390/cio: fix intparm documentation").
As a result, qeth_irq() currently doesn't cancel a cmd that was
terminated via halt/clear. This primarily causes us to leak
card->read_cmd after the qeth device is removed, since our IO path still
holds a refcount for this cmd.
For qeth this means that we need to keep track of which IO is pending on
a device ('active_cmd'), and use this as the intparm when calling
halt/clear. Otherwise qeth_irq() can't match the subsequent IRQ to its
cmd buffer.
Since we now keep track of the _expected_ intparm, we can also detect
any mismatch; this would constitute a bug somewhere in the lower layers.
In this case cancel the active cmd - we effectively "lost" the IRQ and
should not expect any further notification for this IO.
Fixes: 405548959c ("s390/qeth: add support for dynamically allocated cmds")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When the RX path builds non-linear skbs, the packet headers can
currently spill over into page fragments. Depending on the packet type
and what fields we need to access in the headers, this could cause us
to go past the end of skb->data.
So for non-linear packets, copy precisely the length of the necessary
headers ('linear_len') into skb->data.
And don't copy more, upper-level protocols will peel whatever additional
packet headers they need.
Fixes: 4a71df5004 ("qeth: new qeth device driver")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
