When KVM traps an unhandled sysreg/coproc access from a guest, it logs
the guest PC. To aid debugging, it would be helpful to know which
exception level the trap came from, along with other PSTATE/CPSR bits,
so let's log the PSTATE/CPSR too.
Acked-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
We recently addressed a VMID generation race by introducing a read/write
lock around accesses and updates to the vmid generation values.
However, kvm_arch_vcpu_ioctl_run() also calls need_new_vmid_gen() but
does so without taking the read lock.
As far as I can tell, this can lead to the same kind of race:
VM 0, VCPU 0 VM 0, VCPU 1
------------ ------------
update_vttbr (vmid 254)
update_vttbr (vmid 1) // roll over
read_lock(kvm_vmid_lock);
force_vm_exit()
local_irq_disable
need_new_vmid_gen == false //because vmid gen matches
enter_guest (vmid 254)
kvm_arch.vttbr = <PGD>:<VMID 1>
read_unlock(kvm_vmid_lock);
enter_guest (vmid 1)
Which results in running two VCPUs in the same VM with different VMIDs
and (even worse) other VCPUs from other VMs could now allocate clashing
VMID 254 from the new generation as long as VCPU 0 is not exiting.
Attempt to solve this by making sure vttbr is updated before another CPU
can observe the updated VMID generation.
Cc: stable@vger.kernel.org
Fixes: f0cf47d939 "KVM: arm/arm64: Close VMID generation race"
Reviewed-by: Julien Thierry <julien.thierry@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
When we emulate a guest instruction, we don't advance the hardware
singlestep state machine, and thus the guest will receive a software
step exception after a next instruction which is not emulated by the
host.
We bodge around this in an ad-hoc fashion. Sometimes we explicitly check
whether userspace requested a single step, and fake a debug exception
from within the kernel. Other times, we advance the HW singlestep state
rely on the HW to generate the exception for us. Thus, the observed step
behaviour differs for host and guest.
Let's make this simpler and consistent by always advancing the HW
singlestep state machine when we skip an instruction. Thus we can rely
on the hardware to generate the singlestep exception for us, and never
need to explicitly check for an active-pending step, nor do we need to
fake a debug exception from the guest.
Cc: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
When we emulate an MMIO instruction, we advance the CPU state within
decode_hsr(), before emulating the instruction effects.
Having this logic in decode_hsr() is opaque, and advancing the state
before emulation is problematic. It gets in the way of applying
consistent single-step logic, and it prevents us from being able to fail
an MMIO instruction with a synchronous exception.
Clean this up by only advancing the CPU state *after* the effects of the
instruction are emulated.
Cc: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
- 0 is a valid physical address on some arm boards, we can't use
0 as the error value
- don't try to cache flush the error return value (no matter what it is)
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Merge tag 'dma-mapping-4.20-3' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping fixes from Christoph Hellwig:
"Two dma-direct / swiotlb regressions fixes:
- zero is a valid physical address on some arm boards, we can't use
it as the error value
- don't try to cache flush the error return value (no matter what it
is)"
* tag 'dma-mapping-4.20-3' of git://git.infradead.org/users/hch/dma-mapping:
swiotlb: Skip cache maintenance on map error
dma-direct: Make DIRECT_MAPPING_ERROR viable for SWIOTLB
Highlights include:
Bugfixes:
- Fix a NFSv4 state manager deadlock when returning a delegation
- NFSv4.2 copy do not allocate memory under the lock
- flexfiles: Use the correct stateid for IO in the tightly coupled case
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Merge tag 'nfs-for-4.20-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfixes from Trond Myklebust:
- Fix a NFSv4 state manager deadlock when returning a delegation
- NFSv4.2 copy do not allocate memory under the lock
- flexfiles: Use the correct stateid for IO in the tightly coupled case
* tag 'nfs-for-4.20-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
flexfiles: use per-mirror specified stateid for IO
NFSv4.2 copy do not allocate memory under the lock
NFSv4: Fix a NFSv4 state manager deadlock
I'm taking over the maintainance of Sparse so add myself as
maintainer and move Christopher's info to CREDITS.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
We found some bugs in the DAX conversion to XArray (and one bug which
predated the XArray conversion). There were a couple of bugs in some of
the higher-level functions, which aren't actually being called in today's
kernel, but surfaced as a result of converting existing radix tree &
IDR users over to the XArray. Some of the other changes to how the
higher-level APIs work were also motivated by converting various users;
again, they're not in use in today's kernel, so changing them has a low
probability of introducing a bug.
Dan can still trigger a bug in the DAX code with hot-offline/online,
and we're working on tracking that down.
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Merge tag 'xarray-4.20-rc4' of git://git.infradead.org/users/willy/linux-dax
Pull XArray updates from Matthew Wilcox:
"We found some bugs in the DAX conversion to XArray (and one bug which
predated the XArray conversion). There were a couple of bugs in some
of the higher-level functions, which aren't actually being called in
today's kernel, but surfaced as a result of converting existing radix
tree & IDR users over to the XArray.
Some of the other changes to how the higher-level APIs work were also
motivated by converting various users; again, they're not in use in
today's kernel, so changing them has a low probability of introducing
a bug.
Dan can still trigger a bug in the DAX code with hot-offline/online,
and we're working on tracking that down"
* tag 'xarray-4.20-rc4' of git://git.infradead.org/users/willy/linux-dax:
XArray tests: Add missing locking
dax: Avoid losing wakeup in dax_lock_mapping_entry
dax: Fix huge page faults
dax: Fix dax_unlock_mapping_entry for PMD pages
dax: Reinstate RCU protection of inode
dax: Make sure the unlocking entry isn't locked
dax: Remove optimisation from dax_lock_mapping_entry
XArray tests: Correct some 64-bit assumptions
XArray: Correct xa_store_range
XArray: Fix Documentation
XArray: Handle NULL pointers differently for allocation
XArray: Unify xa_store and __xa_store
XArray: Add xa_store_bh() and xa_store_irq()
XArray: Turn xa_erase into an exported function
XArray: Unify xa_cmpxchg and __xa_cmpxchg
XArray: Regularise xa_reserve
nilfs2: Use xa_erase_irq
XArray: Export __xa_foo to non-GPL modules
XArray: Fix xa_for_each with a single element at 0
Pull HID fixes from Jiri Kosina:
- revert of the high-resolution scrolling feature, as it breaks certain
hardware due to incompatibilities between Logitech and Microsoft
worlds. Peter Hutterer is working on a fixed implementation. Until
that is finished, revert by Benjamin Tissoires.
- revert of incorrect strncpy->strlcpy conversion in uhid, from David
Herrmann
- fix for buggy sendfile() implementation on uhid device node, from
Eric Biggers
- a few assorted device-ID specific quirks
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
Revert "Input: Add the `REL_WHEEL_HI_RES` event code"
Revert "HID: input: Create a utility class for counting scroll events"
Revert "HID: logitech: Add function to enable HID++ 1.0 "scrolling acceleration""
Revert "HID: logitech: Enable high-resolution scrolling on Logitech mice"
Revert "HID: logitech: Use LDJ_DEVICE macro for existing Logitech mice"
Revert "HID: logitech: fix a used uninitialized GCC warning"
Revert "HID: input: simplify/fix high-res scroll event handling"
HID: Add quirk for Primax PIXART OEM mice
HID: i2c-hid: Disable runtime PM for LG touchscreen
HID: multitouch: Add pointstick support for Cirque Touchpad
HID: steam: remove input device when a hid client is running.
Revert "HID: uhid: use strlcpy() instead of strncpy()"
HID: uhid: forbid UHID_CREATE under KERNEL_DS or elevated privileges
HID: input: Ignore battery reported by Symbol DS4308
HID: Add quirk for Microsoft PIXART OEM mouse
Pull networking fixes from David Miller:
1) Need to take mutex in ath9k_add_interface(), from Dan Carpenter.
2) Fix mt76 build without CONFIG_LEDS_CLASS, from Arnd Bergmann.
3) Fix socket wmem accounting in SCTP, from Xin Long.
4) Fix failed resume crash in ena driver, from Arthur Kiyanovski.
5) qed driver passes bytes instead of bits into second arg of
bitmap_weight(). From Denis Bolotin.
6) Fix reset deadlock in ibmvnic, from Juliet Kim.
7) skb_scrube_packet() needs to scrub the fwd marks too, from Petr
Machata.
8) Make sure older TCP stacks see enough dup ACKs, and avoid doing SACK
compression during this period, from Eric Dumazet.
9) Add atomicity to SMC protocol cursor handling, from Ursula Braun.
10) Don't leave dangling error pointer if bpf_prog_add() fails in
thunderx driver, from Lorenzo Bianconi. Also, when we unmap TSO
headers, set sq->tso_hdrs to NULL.
11) Fix race condition over state variables in act_police, from Davide
Caratti.
12) Disable guest csum in the presence of XDP in virtio_net, from Jason
Wang.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (64 commits)
net: gemini: Fix copy/paste error
net: phy: mscc: fix deadlock in vsc85xx_default_config
dt-bindings: dsa: Fix typo in "probed"
net: thunderx: set tso_hdrs pointer to NULL in nicvf_free_snd_queue
net: amd: add missing of_node_put()
team: no need to do team_notify_peers or team_mcast_rejoin when disabling port
virtio-net: fail XDP set if guest csum is negotiated
virtio-net: disable guest csum during XDP set
net/sched: act_police: add missing spinlock initialization
net: don't keep lonely packets forever in the gro hash
net/ipv6: re-do dad when interface has IFF_NOARP flag change
packet: copy user buffers before orphan or clone
ibmvnic: Update driver queues after change in ring size support
ibmvnic: Fix RX queue buffer cleanup
net: thunderx: set xdp_prog to NULL if bpf_prog_add fails
net/dim: Update DIM start sample after each DIM iteration
net: faraday: ftmac100: remove netif_running(netdev) check before disabling interrupts
net/smc: use after free fix in smc_wr_tx_put_slot()
net/smc: atomic SMCD cursor handling
net/smc: add SMC-D shutdown signal
...
- Numerous corruption fixes for copy on write
- Numerous corruption fixes for blocksize < pagesize writes
- Don't miscalculate AG reservations for small final AGs
- Fix page cache truncation to work properly for reflink and extent
shifting
- Fix use-after-free when retrying failed inode/dquot buffer logging
- Fix corruptions seen when using copy_file_range in directio mode
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Merge tag 'xfs-4.20-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
"Dave and I have continued our work fixing corruption problems that can
be found when running long-term burn-in exercisers on xfs. Here are
some patches fixing most of the problems, but there will likely be
more. :/
- Numerous corruption fixes for copy on write
- Numerous corruption fixes for blocksize < pagesize writes
- Don't miscalculate AG reservations for small final AGs
- Fix page cache truncation to work properly for reflink and extent
shifting
- Fix use-after-free when retrying failed inode/dquot buffer logging
- Fix corruptions seen when using copy_file_range in directio mode"
* tag 'xfs-4.20-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
iomap: readpages doesn't zero page tail beyond EOF
vfs: vfs_dedupe_file_range() doesn't return EOPNOTSUPP
iomap: dio data corruption and spurious errors when pipes fill
iomap: sub-block dio needs to zeroout beyond EOF
iomap: FUA is wrong for DIO O_DSYNC writes into unwritten extents
xfs: delalloc -> unwritten COW fork allocation can go wrong
xfs: flush removing page cache in xfs_reflink_remap_prep
xfs: extent shifting doesn't fully invalidate page cache
xfs: finobt AG reserves don't consider last AG can be a runt
xfs: fix transient reference count error in xfs_buf_resubmit_failed_buffers
xfs: uncached buffer tracing needs to print bno
xfs: make xfs_file_remap_range() static
xfs: fix shared extent data corruption due to missing cow reservation
The TX stats should be started with the tx_stats_syncp,
there seems to be a copy/paste error in the driver.
Signed-off-by: Andreas Fiedler <andreas.fiedler@gmx.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The vsc85xx_default_config function called in the vsc85xx_config_init
function which is used by VSC8530, VSC8531, VSC8540 and VSC8541 PHYs
mistakenly calls phy_read and phy_write in-between phy_select_page and
phy_restore_page.
phy_select_page and phy_restore_page actually take and release the MDIO
bus lock and phy_write and phy_read take and release the lock to write
or read to a PHY register.
Let's fix this deadlock by using phy_modify_paged which handles
correctly a read followed by a write in a non-standard page.
Fixes: 6a0bfbbe20 ("net: phy: mscc: migrate to phy_select/restore_page functions")
Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
The correct form is "can be probed", so fix the typo.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
of_find_node_by_path() acquires a reference to the node
returned by it and that reference needs to be dropped by its caller.
This place doesn't do that, so fix it.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
team_notify_peers() will send ARP and NA to notify peers. team_mcast_rejoin()
will send multicast join group message to notify peers. We should do this when
enabling/changed to a new port. But it doesn't make sense to do it when a port
is disabled.
On the other hand, when we set mcast_rejoin_count to 2, and do a failover,
team_port_disable() will increase mcast_rejoin.count_pending to 2 and then
team_port_enable() will increase mcast_rejoin.count_pending to 4. We will send
4 mcast rejoin messages at latest, which will make user confused. The same
with notify_peers.count.
Fix it by deleting team_notify_peers() and team_mcast_rejoin() in
team_port_disable().
Reported-by: Liang Li <liali@redhat.com>
Fixes: fc423ff00d ("team: add peer notification")
Fixes: 492b200efd ("team: add support for sending multicast rejoins")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We don't support partial csumed packet since its metadata will be lost
or incorrect during XDP processing. So fail the XDP set if guest_csum
feature is negotiated.
Fixes: f600b69050 ("virtio_net: Add XDP support")
Reported-by: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Pavel Popa <pashinho1990@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We don't disable VIRTIO_NET_F_GUEST_CSUM if XDP was set. This means we
can receive partial csumed packets with metadata kept in the
vnet_hdr. This may have several side effects:
- It could be overridden by header adjustment, thus is might be not
correct after XDP processing.
- There's no way to pass such metadata information through
XDP_REDIRECT to another driver.
- XDP does not support checksum offload right now.
So simply disable guest csum if possible in this the case of XDP.
Fixes: 3f93522ffa ("virtio-net: switch off offloads on demand if possible on XDP set")
Reported-by: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Pavel Popa <pashinho1990@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge tag 'ceph-for-4.20-rc4' of https://github.com/ceph/ceph-client
Pullk ceph fix from Ilya Dryomov:
"A messenger fix, marked for stable"
* tag 'ceph-for-4.20-rc4' of https://github.com/ceph/ceph-client:
libceph: fall back to sendmsg for slab pages
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Merge tag 'for-linus-20181123' of git://git.kernel.dk/linux-block
Pull block fix from Jens Axboe:
"Just a single fix for this week, fixing an issue with nvme-fc"
* tag 'for-linus-20181123' of git://git.kernel.dk/linux-block:
nvme-fc: resolve io failures during connect
Eric noted that with UDP GRO and NAPI timeout, we could keep a single
UDP packet inside the GRO hash forever, if the related NAPI instance
calls napi_gro_complete() at an higher frequency than the NAPI timeout.
Willem noted that even TCP packets could be trapped there, till the
next retransmission.
This patch tries to address the issue, flushing the old packets -
those with a NAPI_GRO_CB age before the current jiffy - before scheduling
the NAPI timeout. The rationale is that such a timeout should be
well below a jiffy and we are not flushing packets eligible for sane GRO.
v1 -> v2:
- clarified the commit message and comment
RFC -> v1:
- added 'Fixes tags', cleaned-up the wording.
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Fixes: 3b47d30396 ("net: gro: add a per device gro flush timer")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When we add a new IPv6 address, we should also join corresponding solicited-node
multicast address, unless the interface has IFF_NOARP flag, as function
addrconf_join_solict() did. But if we remove IFF_NOARP flag later, we do
not do dad and add the mcast address. So we will drop corresponding neighbour
discovery message that came from other nodes.
A typical example is after creating a ipvlan with mode l3, setting up an ipv6
address and changing the mode to l2. Then we will not be able to ping this
address as the interface doesn't join related solicited-node mcast address.
Fix it by re-doing dad when interface changed IFF_NOARP flag. Then we will add
corresponding mcast group and check if there is a duplicate address on the
network.
Reported-by: Jianlin Shi <jishi@redhat.com>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Including:
- Two fixes for the Intel VT-d driver to fix a NULL-ptr
dereference and an unbalance in an allocate/free path
(allocated with memremap, freed with iounmap)
- Fix for a crash in the Renesas IOMMU driver
- Fix for the Advanced Virtual Interrupt Controler (AVIC) code
in the AMD IOMMU driver
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Merge tag 'iommu-fixes-v4.20-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
- Two fixes for the Intel VT-d driver to fix a NULL-ptr dereference and
an unbalance in an allocate/free path (allocated with memremap, freed
with iounmap)
- Fix for a crash in the Renesas IOMMU driver
- Fix for the Advanced Virtual Interrupt Controler (AVIC) code in the
AMD IOMMU driver
* tag 'iommu-fixes-v4.20-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/vt-d: Use memunmap to free memremap
amd/iommu: Fix Guest Virtual APIC Log Tail Address Register
iommu/ipmmu-vmsa: Fix crash on early domain free
iommu/vt-d: Fix NULL pointer dereference in prq_event_thread()
tpacket_snd sends packets with user pages linked into skb frags. It
notifies that pages can be reused when the skb is released by setting
skb->destructor to tpacket_destruct_skb.
This can cause data corruption if the skb is orphaned (e.g., on
transmit through veth) or cloned (e.g., on mirror to another psock).
Create a kernel-private copy of data in these cases, same as tun/tap
zerocopy transmission. Reuse that infrastructure: mark the skb as
SKBTX_ZEROCOPY_FRAG, which will trigger copy in skb_orphan_frags(_rx).
Unlike other zerocopy packets, do not set shinfo destructor_arg to
struct ubuf_info. tpacket_destruct_skb already uses that ptr to notify
when the original skb is released and a timestamp is recorded. Do not
change this timestamp behavior. The ubuf_info->callback is not needed
anyway, as no zerocopy notification is expected.
Mark destructor_arg as not-a-uarg by setting the lower bit to 1. The
resulting value is not a valid ubuf_info pointer, nor a valid
tpacket_snd frame address. Add skb_zcopy_.._nouarg helpers for this.
The fix relies on features introduced in commit 52267790ef ("sock:
add MSG_ZEROCOPY"), so can be backported as is only to 4.14.
Tested with from `./in_netns.sh ./txring_overwrite` from
http://github.com/wdebruij/kerneltools/tests
Fixes: 69e3c75f4d ("net: TX_RING and packet mmap")
Reported-by: Anand H. Krishnan <anandhkrishnan@gmail.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Prevent the ACPI core from registering a platform device for
the SMB0001 HID to avoid IRQ allocation issues (Hans de Goede).
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Merge tag 'acpi-4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"Prevent the ACPI core from registering a platform device for the
SMB0001 HID to avoid IRQ allocation issues (Hans de Goede)"
* tag 'acpi-4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / platform: Add SMB0001 HID to forbidden_id_list
- Fix tasks freezer deadlock in de_thread() that occurs if one
of its sub-threads has been frozen already (Chanho Min).
- Avoid registering a platform device by the ti-cpufreq driver
on platforms that cannot use it (Dave Gerlach).
- Fix a mistake in the ti-opp-supply operating performance points
(OPP) driver that caused an incorrect reference voltage to be
used and make it adjust the minimum voltage dynamically to avoid
hangs or crashes in some cases (Keerthy).
- Fix issues related to compiler flags in the cpupower utility
and correct a linking problem in it by renaming a file with
a duplicate name (Jiri Olsa, Konstantin Khlebnikov).
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Merge tag 'pm-4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix two issues in the Operating Performance Points (OPP)
framework, one cpufreq driver issue, one problem related to the tasks
freezer and a few build-related issues in the cpupower utility.
Specifics:
- Fix tasks freezer deadlock in de_thread() that occurs if one of its
sub-threads has been frozen already (Chanho Min).
- Avoid registering a platform device by the ti-cpufreq driver on
platforms that cannot use it (Dave Gerlach).
- Fix a mistake in the ti-opp-supply operating performance points
(OPP) driver that caused an incorrect reference voltage to be used
and make it adjust the minimum voltage dynamically to avoid hangs
or crashes in some cases (Keerthy).
- Fix issues related to compiler flags in the cpupower utility and
correct a linking problem in it by renaming a file with a duplicate
name (Jiri Olsa, Konstantin Khlebnikov)"
* tag 'pm-4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
exec: make de_thread() freezable
cpufreq: ti-cpufreq: Only register platform_device when supported
opp: ti-opp-supply: Correct the supply in _get_optimal_vdd_voltage call
opp: ti-opp-supply: Dynamically update u_volt_min
tools cpupower: Override CFLAGS assignments
tools cpupower debug: Allow to use outside build flags
tools/power/cpupower: fix compilation with STATIC=true
When merging support for SSBD and the CRC32 instructions, the conflict
resolution for the new capability entries in arm64_features[]
inadvertedly predicated the availability of the CRC32 instructions on
CONFIG_ARM64_SSBD, despite the functionality being entirely unrelated.
Move the #ifdef CONFIG_ARM64_SSBD down so that it only covers the SSBD
capability.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
- Do not lose an IDA on the gpiochip register errorpath.
- Fix the PXA non-pincontrol GPIO-using platforms.
- Fix the direction on the mockup GPIO driver.
- Add some MAINTAINERS stuff: Bartosz stepped up as GPIO
co-maintainer, and Andy established an Intel git tree.
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Merge tag 'gpio-v4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Minor stuff except the IDA leak which was kind of important to fix.
Also new maintainers, yay.
- Do not lose an IDA on the gpiochip register errorpath.
- Fix the PXA non-pincontrol GPIO-using platforms.
- Fix the direction on the mockup GPIO driver.
- Add some MAINTAINERS stuff: Bartosz stepped up as GPIO
co-maintainer, and Andy established an Intel git tree"
* tag 'gpio-v4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
MAINTAINERS: Do maintain Intel GPIO drivers via separate tree
gpio: mockup: fix indicated direction
gpio: pxa: fix legacy non pinctrl aware builds again
gpio: don't free unallocated ida on gpiochip_add_data_with_key() error path
MAINTAINERS: add myself as co-maintainer of gpiolib
Specify correct type for the constants to avoid
the following sparse complaints:
./arch/arm64/include/asm/sysreg.h:471:42: warning: constant 0xffffffffffffffff is so big it is unsigned long
./arch/arm64/include/asm/sysreg.h:512:42: warning: constant 0xffffffffffffffff is so big it is unsigned long
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Olof Johansson <olof@lixom.net>
Acked-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
- Fix for fastboot DSI panel boot time flicker regression, also fixes Bugzilla #108225
- Fix Bugzilla #101269 to avoid GPU hangs on Sandybridge machines
- Avoid GPU hang on error capture on Broxton with Vt-d enabled
- Avoid missing GPU relocations on Pineview and Bearlake (Gen3)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181122120555.GA18282@jlahtine-desk.ger.corp.intel.com
Thomas Falcon says:
====================
ibmvnic: Fix queue and buffer accounting errors
This series includes two small fixes. The first resolves a typo bug
in the code to clean up unused RX buffers during device queue removal.
The second ensures that device queue memory is updated to reflect new
supported queue ring sizes after migration to other backing hardware.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
During device reset, queue memory is not being updated to accommodate
changes in ring buffer sizes supported by backing hardware. Track
any differences in ring buffer sizes following the reset and update
queue memory when possible.
Signed-off-by: Thomas Falcon <tlfalcon@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The wrong index is used when cleaning up RX buffer objects during release
of RX queues. Update to use the correct index counter.
Signed-off-by: Thomas Falcon <tlfalcon@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Set xdp_prog pointer to NULL if bpf_prog_add fails since that routine
reports the error code instead of NULL in case of failure and xdp_prog
pointer value is used in the driver to verify if XDP is currently
enabled.
Moreover report the error code to userspace if nicvf_xdp_setup fails
Fixes: 05c773f52b ("net: thunderx: Add basic XDP support")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
On every iteration of net_dim, the algorithm may choose to
check for the system state by comparing current data sample
with previous data sample. After each of these comparison,
regardless of the action taken, the sample used as baseline
is needed to be updated.
This patch fixes a bug that causes DIM to take wrong decisions,
due to never updating the baseline sample for comparison between
iterations. This way, DIM always compares current sample with
zeros.
Although this is a functional fix, it also improves and stabilizes
performance as the algorithm works properly now.
Performance:
Tested single UDP TX stream with pktgen:
samples/pktgen/pktgen_sample03_burst_single_flow.sh -i p4p2 -d 1.1.1.1
-m 24:8a:07:88:26:8b -f 3 -b 128
ConnectX-5 100GbE packet rate improved from 15-19Mpps to 19-20Mpps.
Also, toggling between profiles is less frequent with the fix.
Fixes: 8115b750db ("net/dim: use struct net_dim_sample as arg to net_dim")
Signed-off-by: Tal Gilboa <talgi@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
rfc8435 says:
For tight coupling, ffds_stateid provides the stateid to be used by
the client to access the file.
However current implementation replaces per-mirror provided stateid with
by open or lock stateid.
Ensure that per-mirror stateid is used by ff_layout_write_prepare_v4 and
nfs4_ff_layout_prepare_ds.
Signed-off-by: Tigran Mkrtchyan <tigran.mkrtchyan@desy.de>
Signed-off-by: Rick Macklem <rmacklem@uoguelph.ca>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Bruce pointed out that we shouldn't allocate memory while holding
a lock in the nfs4_callback_offload() and handle_async_copy()
that deal with a racing CB_OFFLOAD and reply to COPY case.
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
The only significant change is for OSS PCM emulation to convert
with kvcalloc() to address both performance and security issues.
It's a pretty straightforward change, which should be safe.
The rest are, as usual, device-specific small fixes for HD-audio.
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Merge tag 'sound-4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"The only significant change is for OSS PCM emulation to convert with
kvcalloc() to address both performance and security issues. It's a
pretty straightforward change, which should be safe.
The rest are, as usual, device-specific small fixes for HD-audio"
* tag 'sound-4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda/ca0132 - fix AE-5 pincfg
ALSA: hda/ca0132 - Add new ZxR quirk
ALSA: hda/ca0132 - Call pci_iounmap() instead of iounmap()
ALSA: hda/realtek - Add quirk entry for HP Pavilion 15
ALSA: oss: Use kvzalloc() for local buffer allocations
Here are some small char/misc driver fixes for issues that have been
reported.
Nothing major, highlights include:
- gnss sync write fixes
- uio oops fix
- nvmem fixes
- other minor fixes and some documentation/maintainers updates
Full details are in the shortlog.
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are some small char/misc driver fixes for issues that have been
reported.
Nothing major, highlights include:
- gnss sync write fixes
- uio oops fix
- nvmem fixes
- other minor fixes and some documentation/maintainers updates
Full details are in the shortlog.
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
Documentation/security-bugs: Postpone fix publication in exceptional cases
MAINTAINERS: Add Sasha as a stable branch maintainer
gnss: sirf: fix synchronous write timeout
gnss: serial: fix synchronous write timeout
uio: Fix an Oops on load
test_firmware: fix error return getting clobbered
nvmem: core: fix regression in of_nvmem_cell_get()
misc: atmel-ssc: Fix section annotation on atmel_ssc_get_driver_data
drivers/misc/sgi-gru: fix Spectre v1 vulnerability
Drivers: hv: kvp: Fix the recent regression caused by incorrect clean-up
slimbus: ngd: remove unnecessary check
Here are a number of small USB fixes for 4.20-rc4.
There's the usual xhci and dwc2/3 fixes as well as a few minor other
issues resolved for problems that have been reported. Full details are
in the shortlog.
All have been in linux-next for a while with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are a number of small USB fixes for 4.20-rc4.
There's the usual xhci and dwc2/3 fixes as well as a few minor other
issues resolved for problems that have been reported. Full details are
in the shortlog.
All have been in linux-next for a while with no reported issues"
* tag 'usb-4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: cdc-acm: add entry for Hiro (Conexant) modem
usb: xhci: Prevent bus suspend if a port connect change or polling state is detected
usb: core: Fix hub port connection events lost
usb: dwc3: gadget: fix ISOC TRB type on unaligned transfers
Revert "usb: gadget: ffs: Fix BUG when userland exits with submitted AIO transfers"
usb: dwc2: pci: Fix an error code in probe
usb: dwc3: Fix NULL pointer exception in dwc3_pci_remove()
xhci: Add quirk to workaround the errata seen on Cavium Thunder-X2 Soc
usb: xhci: fix timeout for transition from RExit to U0
usb: xhci: fix uninitialized completion when USB3 port got wrong status
xhci: Add check for invalid byte size error when UAS devices are connected.
xhci: handle port status events for removed USB3 hcd
xhci: Fix leaking USB3 shared_hcd at xhci removal
USB: misc: appledisplay: add 20" Apple Cinema Display
USB: quirks: Add no-lpm quirk for Raydium touchscreens
usb: quirks: Add delay-init quirk for Corsair K70 LUX RGB
USB: Wait for extra delay time after USB_PORT_FEAT_RESET for quirky hub
usb: dwc3: gadget: Properly check last unaligned/zero chain TRB
usb: dwc3: core: Clean up ULPI device
- Various fixes related to the SFDP parsing code merged in 4.20
- Fix for a page fault in the cadence-qspi
NAND fixes:
- Fix a macro name conflict between the QCOM NAND controller driver
and the RISC-V asm headers
- Fix of-node handling in the atmel driver
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Merge tag 'mtd/fixes-for-4.20-rc4' of git://git.infradead.org/linux-mtd
Pull mtd fixes from Boris Brezillon:
"SPI NOR fixes:
- Various fixes related to the SFDP parsing code merged in 4.20
- Fix for a page fault in the cadence-qspi
NAND fixes:
- Fix a macro name conflict between the QCOM NAND controller driver
and the RISC-V asm headers
- Fix of-node handling in the atmel driver"
* tag 'mtd/fixes-for-4.20-rc4' of git://git.infradead.org/linux-mtd:
mtd: spi-nor: fix selection of uniform erase type in flexible conf
mtd: spi-nor: Fix Cadence QSPI page fault kernel panic
mtd: rawnand: qcom: Namespace prefix some commands
mtd: rawnand: atmel: fix OF child-node lookup
mtd: spi_nor: pass DMA-able buffer to spi_nor_read_raw()
mtd: spi-nor: don't overwrite errno in spi_nor_get_map_in_use()
mtd: spi-nor: fix iteration over smpt array
mtd: spi-nor: don't drop sfdp data if optional parsers fail
Two small fixes. The qla2xxx is a regression from 4.18 and the ufs
one is a device enablement fix.
Signed-off-by: James E.J. Bottomley <jejb@linux.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:
"Two small fixes.
The qla2xxx is a regression from 4.18 and the ufs one is a device
enablement fix"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ufs: Fix hynix ufs bug with quirk on hi36xx SoC
scsi: qla2xxx: Timeouts occur on surprise removal of QLogic adapter
