Merge the initial lead-in cleanups and fixes that resulted from the
effort to resolve bugs in the section-alignment padding implementation
in the nvdimm core. The back half of this topic is abandoned in favor of
implementing sub-section hotplug support.
Merge miscellaneous libnvdimm sub-system updates for v5.1. Highlights
include:
* Support for the Hyper-V family of device-specific-methods (DSMs)
* Several fixes and workarounds for Hyper-V compatibility.
* Fix for the support to cache the dirty-shutdown-count at init.
Use sysfs_streq() in place of open-coded strcmp()'s that check for an
optional "\n" at the end of the input.
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Remove .owner field if calls are used which set it automatically
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
ACPI NFIT flags field reports major errors on NVDIMM, which need
user's attention.
Update the current log to a proper error message with dev_err().
The current message string is kept for grep-compatibility.
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Robert Elliott <elliott@hpe.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The Linux BTT implementation assumes that log entries will never have
the 'zero' flag set, and indeed it never sets that flag for log entries
itself.
However, the UEFI spec is ambiguous on the exact format of the LBA field
of a log entry, specifically as to whether it should include the
additional flag bits or not. While a zero bit doesn't make sense in the
context of a log entry, other BTT implementations might still have it set.
If an implementation does happen to have it set, we would happily read
it in as the next block to write to for writes. Since a high bit is set,
it pushes the block number out of the range of an 'arena', and we fail
such a write with an EIO.
Follow the robustness principle, and tolerate such implementations by
stripping out the zero flag when populating the free list during
initialization. Additionally, use the same stripped out entries for
detection of incomplete writes and map restoration that happens at this
stage.
Add a sysfs file 'log_zero_flags' that indicates the ability to accept
such a layout to userspace applications. This enables 'ndctl
check-namespace' to recognize whether the kernel is able to handle zero
flags, or whether it should attempt a fix-up under the --repair option.
Cc: Dan Williams <dan.j.williams@intel.com>
Reported-by: Dexuan Cui <decui@microsoft.com>
Reported-by: Pedro d'Aquino Filocre F S Barbuda <pbarbuda@microsoft.com>
Tested-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
We call btt_log_read() twice, once to get the 'old' log entry, and again
to get the 'new' entry. However, we have no use for the 'old' entry, so
remove it.
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The reserve was for an abandoned effort to add label (partitioning
support) to device-dax instances. Remove it.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The checks in __bdev_dax_supported() helped mitigate a potential data
corruption bug in the pmem driver's handling of section alignment
padding. Strengthen the checks, including checking the end of the range,
to validate the dev_pagemap, Xarray entries, and sector-to-pfn
translation established for pmem namespaces.
Acked-by: Jan Kara <jack@suse.cz>
Cc: "Darrick J. Wong" <darrick.wong@oracle.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Recent fixes to command handling enabled Linux to read label
configurations that it could not before. Unfortunately that means that
configurations that were operating in label-less mode will be broken as
the kernel ignores the existing namespace configuration and tries to
honor the new found labels.
Fortunately this seems limited to a case where Linux can quirk the
behavior and maintain the existing label-less semantics by default.
When the platform does not emit an _LSW method, disable all label access
methods. Provide a 'force_labels' module parameter to allow read-only
label operation.
Fixes: 11189c1089 ("acpi/nfit: Fix command-supported detection")
Reported-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
For recovery, where non-dax access is needed to a given physical address
range, and testing, allow the 'force_raw' attribute to override the
default establishment of a dev_pagemap.
Otherwise without this capability it is possible to end up with a
namespace that can not be activated due to corrupted info-block, and one
that can not be repaired due to a section collision.
Cc: <stable@vger.kernel.org>
Fixes: 004f1afbe1 ("libnvdimm, pmem: direct map legacy pmem by default")
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Similar to "libnvdimm: Fix altmap reservation size calculation" provide
for a reservation of a full page worth of info block space at info-block
establishment time. Typically there is already slack in the padding
from honoring the default 2MB alignment, but provide for a reservation
for corner case configurations that would otherwise fit.
Cc: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Libnvdimm reserves the first 8K of pfn and devicedax namespaces to
store a superblock describing the namespace. This 8K reservation
is contained within the altmap area which the kernel uses for the
vmemmap backing for the pages within the namespace. The altmap
allows for some pages at the start of the altmap area to be reserved
and that mechanism is used to protect the superblock from being
re-used as vmemmap backing.
The number of PFNs to reserve is calculated using:
PHYS_PFN(SZ_8K)
Which is implemented as:
#define PHYS_PFN(x) ((unsigned long)((x) >> PAGE_SHIFT))
So on systems where PAGE_SIZE is greater than 8K the reservation
size is truncated to zero and the superblock area is re-used as
vmemmap backing. As a result all the namespace information stored
in the superblock (i.e. if it's a PFN or DAX namespace) is lost
and the namespace needs to be re-created to get access to the
contents.
This patch fixes this by using PFN_UP() rather than PHYS_PFN() to ensure
that at least one page is reserved. On systems with a 4K pages size this
patch should have no effect.
Cc: stable@vger.kernel.org
Cc: Dan Williams <dan.j.williams@intel.com>
Fixes: ac515c084b ("libnvdimm, pmem, pfn: move pfn setup to the core")
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
When trying to see whether current nd_region intersects with others,
trim_pfn_device() has already calculated the *size* to be expanded to
SECTION size.
Do not double append 'adjust' to 'size' when calculating whether the end
of a region collides with the next pmem region.
Fixes: ae86cbfef3 "libnvdimm, pfn: Pad pfn namespaces relative to other regions"
Cc: <stable@vger.kernel.org>
Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Commit 11189c1089 "acpi/nfit: Fix command-supported detection" broke
ND_CMD_CALL for bus-level commands. The "func = cmd" assumption is only
valid for:
ND_CMD_ARS_CAP
ND_CMD_ARS_START
ND_CMD_ARS_STATUS
ND_CMD_CLEAR_ERROR
The function number otherwise needs to be pulled from the command
payload for:
NFIT_CMD_TRANSLATE_SPA
NFIT_CMD_ARS_INJECT_SET
NFIT_CMD_ARS_INJECT_CLEAR
NFIT_CMD_ARS_INJECT_GET
Update cmd_to_func() for the bus case and call it in the common path.
Fixes: 11189c1089 ("acpi/nfit: Fix command-supported detection")
Cc: <stable@vger.kernel.org>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Reported-by: Grzegorz Burzynski <grzegorz.burzynski@intel.com>
Tested-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
As Dexuan reports the NVDIMM_FAMILY_HYPERV platform is incompatible with
the existing Linux namespace implementation because it uses
NSLABEL_FLAG_LOCAL for x1-width PMEM interleave sets. Quirk it as an
platform / DIMM that does not provide BLK-aperture access. Allow the
libnvdimm core to assume no potential for aliasing. In case other
implementations make the same mistake, provide a "noblk" module
parameter to force-enable the quirk.
Link: https://lkml.kernel.org/r/PU1P153MB0169977604493B82B662A01CBF920@PU1P153MB0169.APCP153.PROD.OUTLOOK.COM
Reported-by: Dexuan Cui <decui@microsoft.com>
Tested-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Ross has moved on to other areas.
Matthew and Jan are trusted reviewers for DAX.
Dan is now coordinating filesystem-dax pull requests.
Ira and Keith are now involved with the NVDIMM and Device-DAX
sub-systems.
The linux-nvdimm mailing hosts a patchwork instance for both DAX and
NVDIMM patches.
Cc: Matthew Wilcox <willy@infradead.org>
Acked-by: Keith Busch <keith.busch@intel.com>
Acked-by: Ross Zwisler <zwisler@kernel.org>
Acked-by: Ira Weiny <ira.weiny@intel.com>
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
In the case of ND_CMD_CALL, we should also check out_obj->type.
The patch uses out_obj->type, which is a short alias to
out_obj->package.type.
Fixes: 31eca76ba2 ("nfit, libnvdimm: limited/whitelisted dimm command marshaling mechanism")
Cc: <stable@vger.kernel.org>
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The implementation is broken in all the ways the unit test did not touch:
1/ The local definition of in_buf and in_obj violated C99 initializer
expectations for zeroing. By only initializing 2 out of the three
struct members the compiler was free to zero-initialize the remaining
entry even though the aliased location in the union was initialized.
2/ The implementation made assumptions about the state of the 'smart'
payload after command execution that are satisfied by
acpi_nfit_ctl(), but not acpi_evaluate_dsm().
3/ populate_shutdown_status() is skipped on Intel NVDIMMs due to the early
return for skipping the common _LS{I,R,W} enabling.
4/ The input length should be zero.
This breakage was missed due to the unit test implementation only
testing the case where nfit_intel_shutdown_status() returns a valid
payload.
Much of this complexity would be saved if acpi_nfit_ctl() could be used, but
that currently requires a 'struct nvdimm *' argument and one is not created
until later in the init process. The health result is needed before the device
is created because the payload gates whether the nmemX/nfit/dirty_shutdown
property is visible in sysfs.
Cc: <stable@vger.kernel.org>
Fixes: 0ead11181f ("acpi, nfit: Collect shutdown status")
Reported-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Pull x86 fixes from Thomas Gleixner:
"A set of fixes for x86:
- Fix the swapped outb() parameters in the KASLR code
- Fix the PKEY handling at fork which missed to preserve the pkey
state for the child. Comes with a test case to validate that.
- Fix the entry stack handling for XEN PV to respect that XEN PV
systems enter the function already on the current thread stack and
not on the trampoline.
- Fix kexec load failure caused by using a stale value when the
kexec_buf structure is reused for subsequent allocations.
- Fix a bogus sizeof() in the memory encryption code
- Enforce PCI dependency for the Intel Low Power Subsystem
- Enforce PCI_LOCKLESS_CONFIG when PCI is enabled"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/Kconfig: Select PCI_LOCKLESS_CONFIG if PCI is enabled
x86/entry/64/compat: Fix stack switching for XEN PV
x86/kexec: Fix a kexec_file_load() failure
x86/mm/mem_encrypt: Fix erroneous sizeof()
x86/selftests/pkeys: Fork() to check for state being preserved
x86/pkeys: Properly copy pkey state at fork()
x86/kaslr: Fix incorrect i8254 outb() parameters
x86/intel/lpss: Make PCI dependency explicit
Pull x86 timer fixes from Thomas Gleixner:
"Two commits which were missed to be sent during the merge window.
- The TSC calibration fix turns out to be more urgent as recent
Skylake-X systems seem to have massive trouble with calibration
disturbance. This should go back into stable for that reason and it
the risk of breakage is rather low.
- Drop an unused define"
* 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/hpet: Remove unused FSEC_PER_NSEC define
x86/tsc: Make calibration refinement more robust
Pull timer fix from Thomas Glexiner:
"A single regression fix to address the unintended breakage of posix
cpu timers.
This is caused by a new sanity check in the common code, which fails
for posix cpu timers under certain conditions because the posix cpu
timer code never updates the variable which is checked"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
posix-cpu-timers: Unbreak timer rearming
Pull locking fixes from Thomas Gleixner:
"A small series of fixes which all address possible missed wakeups:
- Document and fix the wakeup ordering of wake_q
- Add the missing barrier in rcuwait_wake_up(), which was documented
in the comment but missing in the code
- Fix the possible missed wakeups in the rwsem and futex code"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/rwsem: Fix (possible) missed wakeup
futex: Fix (possible) missed wakeup
sched/wake_q: Fix wakeup ordering for wake_q
sched/wake_q: Document wake_q_add()
sched/wait: Fix rcuwait_wake_up() ordering
Pull irq fixes from Thomas Gleixner:
"A small set of fixes for the interrupt subsystem:
- Fix a double increment in the irq descriptor allocator which
resulted in a sanity check only being done for every second
affinity mask
- Add a missing device tree translation in the stm32-exti driver.
Without that the interrupt association is completely wrong.
- Initialize the mutex in the GIC-V3 MBI driver
- Fix the alignment for aliasing devices in the GIC-V3-ITS driver so
multi MSI allocations work correctly
- Ensure that the initial affinity of a interrupt is not empty at
startup time.
- Drop bogus include in the madera irq chip driver
- Fix KernelDoc regression"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gic-v3-its: Align PCI Multi-MSI allocation on their size
genirq/irqdesc: Fix double increment in alloc_descs()
genirq: Fix the kerneldoc comment for struct irq_affinity_desc
irqchip/madera: Drop GPIO includes
irqchip/gic-v3-mbi: Fix uninitialized mbi_lock
irqchip/stm32-exti: Add domain translate function
genirq: Make sure the initial affinity is not empty
Pull block revert from Jens Axboe:
"Silly error snuck into a patch from the last series, let's do a revert
to avoid a potential use-after-free"
* tag 'for-linus-20190127' of git://git.kernel.dk/linux-block:
Revert "block: cover another queue enter recursion via BIO_QUEUE_ENTERED"
Pull KVM fixes from Paolo Bonzini:
"Quite a few fixes for x86: nested virtualization save/restore, AMD
nested virtualization and virtual APIC, 32-bit fixes, an important fix
to restore operation on older processors, and a bunch of hyper-v
bugfixes. Several are marked stable.
There are also fixes for GCC warnings and for a GCC/objtool interaction"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: x86: Mark expected switch fall-throughs
KVM: x86: fix TRACE_INCLUDE_PATH and remove -I. header search paths
KVM: selftests: check returned evmcs version range
x86/kvm/hyper-v: nested_enable_evmcs() sets vmcs_version incorrectly
KVM: VMX: Move vmx_vcpu_run()'s VM-Enter asm blob to a helper function
kvm: selftests: Fix region overlap check in kvm_util
kvm: vmx: fix some -Wmissing-prototypes warnings
KVM: nSVM: clear events pending from svm_complete_interrupts() when exiting to L1
svm: Fix AVIC incomplete IPI emulation
svm: Add warning message for AVIC IPI invalid target
KVM: x86: WARN_ONCE if sending a PV IPI returns a fatal error
KVM: x86: Fix PV IPIs for 32-bit KVM host
x86/kvm/hyper-v: recommend using eVMCS only when it is enabled
x86/kvm/hyper-v: don't recommend doing reset via synthetic MSR
kvm: x86/vmx: Use kzalloc for cached_vmcs12
KVM: VMX: Use the correct field var when clearing VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL
KVM: x86: Fix single-step debugging
x86/kvm/hyper-v: don't announce GUEST IDLE MSR support
Pull dma-mapping fix from Christoph Hellwig:
"Fix a xen-swiotlb regression on arm64"
* tag 'dma-mapping-5.0-2' of git://git.infradead.org/users/hch/dma-mapping:
arm64/xen: fix xen-swiotlb cache flushing
Pull libnvdimm fixes from Dan Williams:
"A fix for namespace label support for non-Intel NVDIMMs that implement
the ACPI standard label method.
This has apparently never worked and could wait for v5.1. However it
has enough visibility with hardware vendors [1] and distro bug
trackers [2], and low enough risk that I decided it should go in for
-rc4. The other fixups target the new, for v5.0, nvdimm security
functionality. The larger init path fixup closes a memory leak and a
potential userspace lockup due to missed notifications.
[1] https://github.com/pmem/ndctl/issues/78
[2] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1811785
These have all soaked in -next for a week with no reported issues.
Summary:
- Fix support for NVDIMMs that implement the ACPI standard label
methods.
- Fix error handling for security overwrite (memory leak / userspace
hang condition), and another one-line security cleanup"
* tag 'libnvdimm-fixes-5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
acpi/nfit: Fix command-supported detection
acpi/nfit: Block function zero DSMs
libnvdimm/security: Require nvdimm_security_setup_events() to succeed
nfit_test: fix security state pull for nvdimm security nfit_test
Pull input fixes from Dmitry Torokhov:
"A fixup for the input_event fix for y2038 Sparc64, and couple other
minor fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: input_event - fix the CONFIG_SPARC64 mixup
Input: olpc_apsp - assign priv->dev earlier
Input: uinput - fix undefined behavior in uinput_validate_absinfo()
Input: raspberrypi-ts - fix link error
Input: xpad - add support for SteelSeries Stratus Duo
Input: input_event - provide override for sparc64
Pull networking fixes from David Miller:
1) Count ttl-dropped frames properly in mac80211, from Bob Copeland.
2) Integer overflow in ktime handling of bcm can code, from Oliver
Hartkopp.
3) Fix RX desc handling wrt. hw checksumming in ravb, from Simon
Horman.
4) Various hash key fixes in hv_netvsc, from Haiyang Zhang.
5) Use after free in ax25, from Eric Dumazet.
6) Several fixes to the SSN support in SCTP, from Xin Long.
7) Do not process frames after a NAPI reschedule in ibmveth, from
Thomas Falcon.
8) Fix NLA_POLICY_NESTED arguments, from Johannes Berg.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (42 commits)
qed: Revert error handling changes.
cfg80211: extend range deviation for DMG
cfg80211: reg: remove warn_on for a normal case
mac80211: Add attribute aligned(2) to struct 'action'
mac80211: don't initiate TDLS connection if station is not associated to AP
nl80211: fix NLA_POLICY_NESTED() arguments
ibmveth: Do not process frames after calling napi_reschedule
net: dev_is_mac_header_xmit() true for ARPHRD_RAWIP
net: usb: asix: ax88772_bind return error when hw_reset fail
MAINTAINERS: Update cavium networking drivers
net/mlx4_core: Fix error handling when initializing CQ bufs in the driver
net/mlx4_core: Add masking for a few queries on HCA caps
sctp: set flow sport from saddr only when it's 0
sctp: set chunk transport correctly when it's a new asoc
sctp: improve the events for sctp stream adding
sctp: improve the events for sctp stream reset
ip_tunnel: Make none-tunnel-dst tunnel port work with lwtunnel
ax25: fix possible use-after-free
sfc: suppress duplicate nvmem partition types in efx_ef10_mtd_probe
hv_netvsc: fix typos in code comments
...
Pull smb3 fixes from Steve French:
"A set of small smb3 fixes, some fixing various crediting issues
discovered during xfstest runs, five for stable"
* tag '5.0-rc3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: print CIFSMaxBufSize as part of /proc/fs/cifs/DebugData
smb3: add credits we receive from oplock/break PDUs
CIFS: Fix mounts if the client is low on credits
CIFS: Do not assume one credit for async responses
CIFS: Fix credit calculations in compound mid callback
CIFS: Fix credit calculation for encrypted reads with errors
CIFS: Fix credits calculations for reads with errors
CIFS: Do not reconnect TCP session in add_credits()
smb3: Cleanup license mess
CIFS: Fix possible hang during async MTU reads and writes
cifs: fix memory leak of an allocated cifs_ntsd structure
Pull VFIO fixes from Alex Williamson:
- cleanup licenses in new files (Thomas Gleixner)
- cleanup new compiler warnings (Alexey Kardashevskiy)
* tag 'vfio-v5.0-rc4' of git://github.com/awilliam/linux-vfio:
vfio-pci/nvlink2: Fix ancient gcc warnings
vfio/pci: Cleanup license mess
Pull SCSI fixes from James Bottomley:
"Six fixes, all of which appear to have user visible consequences.
The DMA one is a regression fix from the merge window and of the
others, four are driver specific and one specific to the target code"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ufs: Use explicit access size in ufshcd_dump_regs
scsi: tcmu: fix use after free
scsi: csiostor: fix NULL pointer dereference in csio_vport_set_state()
scsi: lpfc: nvmet: avoid hang / use-after-free when destroying targetport
scsi: lpfc: nvme: avoid hang / use-after-free when destroying localport
scsi: communicate max segment size to the DMA mapping code
Pull block fixes from Jens Axboe:
"A collection of fixes for this release. This contains:
- Silence sparse rightfully complaining about non-static wbt
functions (Bart)
- Fixes for the zoned comments/ioctl documentation (Damien)
- direct-io fix that's been lingering for a while (Ernesto)
- cgroup writeback fix (Tejun)
- Set of NVMe patches for nvme-rdma/tcp (Sagi, Hannes, Raju)
- Block recursion tracking fix (Ming)
- Fix debugfs command flag naming for a few flags (Jianchao)"
* tag 'for-linus-20190125' of git://git.kernel.dk/linux-block:
block: Fix comment typo
uapi: fix ioctl documentation
blk-wbt: Declare local functions static
blk-mq: fix the cmd_flag_name array
nvme-multipath: drop optimization for static ANA group IDs
nvmet-rdma: fix null dereference under heavy load
nvme-rdma: rework queue maps handling
nvme-tcp: fix timeout handler
nvme-rdma: fix timeout handler
writeback: synchronize sync(2) against cgroup writeback membership switches
block: cover another queue enter recursion via BIO_QUEUE_ENTERED
direct-io: allow direct writes to empty inodes
Pull MMC fixes from Ulf Hansson:
- sdhci-acpi: Fixup build dependency for PCI
- sdhci-omap: Resolve Kconfig warnings on keystone
- sdhci-iproc: Propagate errors from DT parsing
- meson-gx: Fixup IRQ handling in release callback
- meson-gx: Use signal re-sampling to fixup tuning
- dw_mmc-bluefield: Fix the license information
* tag 'mmc-v5.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: dw_mmc-bluefield: : Fix the license information
mmc: meson-gx: enable signal re-sampling together with tuning
mmc: sdhci-iproc: handle mmc_of_parse() errors during probe
mmc: meson-gx: Free irq in release() callback
mmc: host: Fix Kconfig warnings on keystone_defconfig
mmc: sdhci-acpi: Make PCI dependency explicit
Pull char/misc driver fixes from Greg KH:
"Here are some small char and misc driver fixes to resolve some
reported issues, as well as a number of binderfs fixups that were
found after auditing the filesystem code by Al Viro. As binderfs
hasn't been in a previous release yet, it's good to get these in now
before the first users show up.
All of these have been in linux-next for a bit with no reported
issues"
* tag 'char-misc-5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (26 commits)
i3c: master: Fix an error checking typo in 'cdns_i3c_master_probe()'
binderfs: switch from d_add() to d_instantiate()
binderfs: drop lock in binderfs_binder_ctl_create
binderfs: kill_litter_super() before cleanup
binderfs: rework binderfs_binder_device_create()
binderfs: rework binderfs_fill_super()
binderfs: prevent renaming the control dentry
binderfs: remove outdated comment
binderfs: use __u32 for device numbers
binderfs: use correct include guards in header
misc: pvpanic: fix warning implicit declaration
char/mwave: fix potential Spectre v1 vulnerability
misc: ibmvsm: Fix potential NULL pointer dereference
binderfs: fix error return code in binderfs_fill_super()
mei: me: add denverton innovation engine device IDs
mei: me: mark LBG devices as having dma support
mei: dma: silent the reject message
binderfs: handle !CONFIG_IPC_NS builds
binderfs: reserve devices for initial mount
binderfs: rename header to binderfs.h
...
Pull staging driver fixes from Greg KH:
"Here are some small staging driver fixes for 5.0-rc4.
They resolve some reported bugs and add a new device id for one
driver. Nothing major at all, but all good to have.
All of these have been in linux-next for a while with no reported
issues"
* tag 'staging-5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: android: ion: Support cpu access during dma_buf_detach
staging: rtl8723bs: Fix build error with Clang when inlining is disabled
staging: rtl8188eu: Add device code for D-Link DWA-121 rev B1
staging: vchiq: Fix local event signalling
Staging: wilc1000: unlock on error in init_chip()
staging: wilc1000: fix memory leak in wilc_add_rx_gtk
staging: wilc1000: fix registration frame size
Pull tty/serial driver fixes from Greg KH:
"Here are a number of small tty core and serial driver fixes for
5.0-rc4 to resolve some reported issues.
Nothing major, the small serial driver fixes, a tty core fixup for a
crash that was reported, and some good vt fixes from Nicolas Pitre as
he seems to be auditing that chunk of code a lot lately.
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling
tty: serial: qcom_geni_serial: Allow mctrl when flow control is disabled
tty: Handle problem if line discipline does not have receive_buf
vgacon: unconfuse vc_origin when using soft scrollback
vt: invoke notifier on screen size change
vt: always call notifier with the console lock held
vt: make vt_console_print() compatible with the unicode screen buffer
tty/n_hdlc: fix __might_sleep warning
serial: 8250: Fix serial8250 initialization crash
uart: Fix crash in uart_write and uart_put_char
Pull USB/PHY fixes from Greg KH:
"Here are a number of small USB and PHY driver fixes for 5.0-rc4.
Nothing major at all, just the usual selection of USB gadget bugfixes,
some new USB serial driver ids, some SPDX fixes, and some PHY driver
fixes for reported issues.
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-5.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: serial: keyspan_usa: add proper SPDX lines for .h files
USB: EHCI: ehci-mv: add MODULE_DEVICE_TABLE
USB: leds: fix regression in usbport led trigger
usb: chipidea: fix static checker warning for NULL pointer
MAINTAINERS: email address update in MAINTAINERS entries
USB: usbip: delete README file
USB: serial: pl2303: add new PID to support PL2303TB
usb: dwc2: gadget: Fix Remote Wakeup interrupt bit clearing
phy: ath79-usb: Fix the main reset name to match the DT binding
phy: ath79-usb: Fix the power on error path
phy: fix build breakage: add PHY_MODE_SATA
phy: ti: ensure priv is not null before dereferencing it
USB: serial: ftdi_sio: fix GPIO not working in autosuspend
usb: gadget: Potential NULL dereference on allocation error
usb: dwc3: gadget: Fix the uninitialized link_state when udc starts
usb: dwc3: gadget: Clear req->needs_extra_trb flag on cleanup
usb: dwc3: gadget: synchronize_irq dwc irq in suspend
USB: serial: simple: add Motorola Tetra TPG2200 device id
Johannes Berg says:
====================
Just a few small fixes:
* avoid trying to operate TDLS when not connection,
this is not valid and led to issues
* count TTL-dropped frames in mesh better
* deal with new WiGig channels in regulatory code
* remove a WARN_ON() that can trigger due to benign
races during device/driver registration
* fix nested netlink policy maxattrs (syzkaller)
* fix hwsim n_limits (syzkaller)
* propagate __aligned(2) to a surrounding struct
* return proper error in virt_wifi error path
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.
This patch fixes the following warnings:
arch/x86/kvm/lapic.c:1037:27: warning: this statement may fall through [-Wimplicit-fallthrough=]
arch/x86/kvm/lapic.c:1876:3: warning: this statement may fall through [-Wimplicit-fallthrough=]
arch/x86/kvm/hyperv.c:1637:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
arch/x86/kvm/svm.c:4396:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
arch/x86/kvm/mmu.c:4372:36: warning: this statement may fall through [-Wimplicit-fallthrough=]
arch/x86/kvm/x86.c:3835:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
arch/x86/kvm/x86.c:7938:23: warning: this statement may fall through [-Wimplicit-fallthrough=]
arch/x86/kvm/vmx/vmx.c:2015:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
arch/x86/kvm/vmx/vmx.c:1773:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
Warning level 3 was used: -Wimplicit-fallthrough=3
This patch is part of the ongoing efforts to enabling -Wimplicit-fallthrough.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The header search path -I. in kernel Makefiles is very suspicious;
it allows the compiler to search for headers in the top of $(srctree),
where obviously no header file exists.
The reason of having -I. here is to make the incorrectly set
TRACE_INCLUDE_PATH working.
As the comment block in include/trace/define_trace.h says,
TRACE_INCLUDE_PATH should be a relative path to the define_trace.h
Fix the TRACE_INCLUDE_PATH, and remove the iffy include paths.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Check that KVM_CAP_HYPERV_ENLIGHTENED_VMCS returns correct version range.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Commit e2e871ab2f ("x86/kvm/hyper-v: Introduce nested_get_evmcs_version()
helper") broke EVMCS enablement: to set vmcs_version we now call
nested_get_evmcs_version() but this function checks
enlightened_vmcs_enabled flag which is not yet set so we end up returning
zero.
Fix the issue by re-arranging things in nested_enable_evmcs().
Fixes: e2e871ab2f ("x86/kvm/hyper-v: Introduce nested_get_evmcs_version() helper")
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
...along with the function's STACK_FRAME_NON_STANDARD tag. Moving the
asm blob results in a significantly smaller amount of code that is
marked with STACK_FRAME_NON_STANDARD, which makes it far less likely
that gcc will split the function and trigger a spurious objtool warning.
As a bonus, removing STACK_FRAME_NON_STANDARD from vmx_vcpu_run() allows
the bulk of code to be properly checked by objtool.
Because %rbp is not loaded via VMCS fields, vmx_vcpu_run() must manually
save/restore the host's RBP and load the guest's RBP prior to calling
vmx_vmenter(). Modifying %rbp triggers objtool's stack validation code,
and so vmx_vcpu_run() is tagged with STACK_FRAME_NON_STANDARD since it's
impossible to avoid modifying %rbp.
Unfortunately, vmx_vcpu_run() is also a gigantic function that gcc will
split into separate functions, e.g. so that pieces of the function can
be inlined. Splitting the function means that the compiled Elf file
will contain one or more vmx_vcpu_run.part.* functions in addition to
a vmx_vcpu_run function. Depending on where the function is split,
objtool may warn about a "call without frame pointer save/setup" in
vmx_vcpu_run.part.* since objtool's stack validation looks for exact
names when whitelisting functions tagged with STACK_FRAME_NON_STANDARD.
Up until recently, the undesirable function splitting was effectively
blocked because vmx_vcpu_run() was tagged with __noclone. At the time,
__noclone had an unintended side effect that put vmx_vcpu_run() into a
separate optimization unit, which in turn prevented gcc from inlining
the function (or any of its own function calls) and thus eliminated gcc's
motivation to split the function. Removing the __noclone attribute
allowed gcc to optimize vmx_vcpu_run(), exposing the objtool warning.
Kudos to Qian Cai for root causing that the fnsplit optimization is what
caused objtool to complain.
Fixes: 453eafbe65 ("KVM: VMX: Move VM-Enter + VM-Exit handling to non-inline sub-routines")
Tested-by: Qian Cai <cai@lca.pw>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
