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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fix from Greg KH:
"Here is a single kernfs fix to resolve a much-reported lockdep issue
with the removal of entries in sysfs"
* tag 'driver-core-3.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
kernfs: make kernfs_deactivate() honor KERNFS_LOCKDEP flag
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The completion queue is implemented using lockless list.
The llist_add is adds the events to the list head which is a push operation.
The processing of the completion elements is done by disconnecting all the
pushed elements and iterating over the disconnected list. The problem is
that the processing is done in reverse order w.r.t order of the insertion
i.e. LIFO processing. By reversing the disconnected list which is done in
linear time the desired FIFO processing is achieved.
Signed-off-by: Shlomo Pongratz <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
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Immutable biovecs changed the way biovecs are interpreted - drivers no
longer use bi_vcnt, they have to go by bi_iter.bi_size (to allow for
using part of an existing segment without modifying it).
This breaks with discards and write_same bios, since for those bi_size
has nothing to do with segments in the biovec. So for now, we need a
fairly gross hack - we fortunately know that there will never be more
than one segment for the entire request, so we can special case
discard/write_same.
Signed-off-by: Kent Overstreet <[email protected]>
Tested-by: Hugh Dickins <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
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Commit 9f060e2231ca changed the way we handle allocations for the
integrity vectors. When the vectors are inline there is no associated
slab and consequently bvec_nr_vecs() returns 0. Ensure that we check
against BIP_INLINE_VECS in that case.
Reported-by: David Milburn <[email protected]>
Tested-by: David Milburn <[email protected]>
Cc: [email protected] # v3.10+
Signed-off-by: Martin K. Petersen <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
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This patch adds the missing bio_integrity_enabled() +
bio_integrity_prep() setup into blk_mq_make_request()
in order to use DIF protection with scsi-mq.
Cc: Martin K. Petersen <[email protected]>
Signed-off-by: Nicholas Bellinger <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Pull ceph fixes from Sage Weil:
"There is an RBD fix for a crash due to the immutable bio changes, an
error path fix, and a locking fix in the recent redirect support"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
libceph: do not dereference a NULL bio pointer
libceph: take map_sem for read in handle_reply()
libceph: factor out logic from ceph_osdc_start_request()
libceph: fix error handling in ceph_osdc_init()
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Relax VDSO alignment requirements so that the kernel-picked one (4K)
does not conflict with the dynamic linker's one (64K)
- VDSO gettimeofday fix
- Barrier fixes for atomic operations and cache flushing
- TLB invalidation when overriding early page mappings during boot
- Wired up new 32-bit arm (compat) syscalls
- LSM_MMAP_MIN_ADDR when COMPAT is enabled
- defconfig update
- Clean-up (comments, pgd_alloc).
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: defconfig: Expand default enabled features
arm64: asm: remove redundant "cc" clobbers
arm64: atomics: fix use of acquire + release for full barrier semantics
arm64: barriers: allow dsb macro to take option parameter
security: select correct default LSM_MMAP_MIN_ADDR on arm on arm64
arm64: compat: Wire up new AArch32 syscalls
arm64: vdso: update wtm fields for CLOCK_MONOTONIC_COARSE
arm64: vdso: fix coarse clock handling
arm64: simplify pgd_alloc
arm64: fix typo: s/SERRROR/SERROR/
arm64: Invalidate the TLB when replacing pmd entries during boot
arm64: Align CMA sizes to PAGE_SIZE
arm64: add DSB after icache flush in __flush_icache_all()
arm64: vdso: prevent ld from aligning PT_LOAD segments to 64k
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Pull MIPS updates from Ralf Baechle:
"hree minor patches. All have sat in -next for a few days"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: fpu.h: Fix build when CONFIG_BUG is not set
MIPS: Wire up sched_setattr/sched_getattr syscalls
MIPS: Alchemy: Fix DB1100 GPIO registration
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media fixes from Mauro Carvalho Chehab:
"A series of small fixes. Mostly driver ones. There is one core
regression fix on a patch that was meant to fix some race issues on
vb2, but that actually caused more harm than good. So, we're just
reverting it for now"
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
[media] adv7842: Composite free-run platfrom-data fix
[media] v4l2-dv-timings: fix GTF calculation
[media] hdpvr: Fix memory leak in debug
[media] af9035: add ID [2040:f900] Hauppauge WinTV-MiniStick 2
[media] mxl111sf: Fix compile when CONFIG_DVB_USB_MXL111SF is unset
[media] mxl111sf: Fix unintentional garbage stack read
[media] cx24117: use a valid dev pointer for dev_err printout
[media] cx24117: remove dead code in always 'false' if statement
[media] update Michael Krufky's email address
[media] vb2: Check if there are buffers before streamon
[media] Revert "[media] videobuf_vm_{open,close} race fixes"
[media] go7007-loader: fix usb_dev leak
[media] media: bt8xx: add missing put_device call
[media] exynos4-is: Compile in fimc-lite runtime PM callbacks conditionally
[media] exynos4-is: Compile in fimc runtime PM callbacks conditionally
[media] exynos4-is: Fix error paths in probe() for !pm_runtime_enabled()
[media] s5p-jpeg: Fix wrong NV12 format parameters
[media] s5k5baf: allow to handle arbitrary long i2c sequences
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git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
"Fix PMBus driver problem with some multi-page voltage sensors and fix
da9055 interrupt initialization"
* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (da9055) Remove use of regmap_irq_get_virq()
hwmon: (pmbus) Support per-page exponent in linear mode
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management fixes from Rafael Wysocki:
"These include a fix for a recent ACPI hotplug regression, four
concurrency related fixes and one PCI device removal fix for
ACPI-based PCI hotplug (ACPIPHP), intel_pstate fix that should go into
stable, three simple ACPI cleanups and a new entry for the ACPI video
blacklist.
Specifics:
- Fix for a recent ACPI hotplug regression causing a NULL pointer
dereference to occur while handling ACPI eject notifications for
already ejected devices. From Toshi Kani.
- Four concurrency-related fixes for ACPIPHP. Two of them add
missing locking and the other two fix race conditions related to
reference counting.
- ACPIPHP fix to avoid NULL pointer dereferences during device
removal involving Virtual Funcions.
- intel_pstate fix to make it compute the percentage of time the CPU
is busy properly. From Dirk Brandewie.
- Removal of two unnecessary NULL pointer checks in ACPI code and a
fix for sscanf() format string from Dan Carpenter and Luis G.F.
- New ACPI video blacklist entry for HP EliteBook Revolve 810 from
Mika Westerberg"
* tag 'pm+acpi-3.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / hotplug: Fix panic on eject to ejected device
ACPI / battery: Fix incorrect sscanf() string in acpi_battery_init_alarm()
ACPI / proc: remove unneeded NULL check
ACPI / utils: remove a pointless NULL check
ACPI / video: Add HP EliteBook Revolve 810 to the blacklist
intel_pstate: Take core C0 time into account for core busy calculation
ACPI / hotplug / PCI: Fix bridge removal race vs dock events
ACPI / hotplug / PCI: Fix bridge removal race in handle_hotplug_event()
ACPI / hotplug / PCI: Scan root bus under the PCI rescan-remove lock
ACPI / hotplug / PCI: Move PCI rescan-remove locking to hotplug_event()
ACPI / hotplug / PCI: Remove entries from bus->devices in reverse order
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Commit f38a5181d9f3 ("ceph: Convert to immutable biovecs") introduced
a NULL pointer dereference, which broke rbd in -rc1. Fix it.
Cc: Kent Overstreet <[email protected]>
Signed-off-by: Ilya Dryomov <[email protected]>
Reviewed-by: Sage Weil <[email protected]>
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* Avoid WARN_ON() when mapping BGRT on Baytrail (EFI 32-bit).
Signed-off-by: H. Peter Anvin <[email protected]>
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Commit afe2dab4f6 ("USB: add hex/bcd detection to usb modalias generation")
changed the routine that generates alias ranges. Before that change, only
digits 0-9 were supported; the commit tried to fix the case when the range
includes higher values than 0x9.
Unfortunately, the commit didn't fix the case when the range includes both
0x9 and 0xA, meaning that the final range must look like [x-9A-y] where
x <= 0x9 and y >= 0xA -- instead the [x-9A-x] range was produced.
Modprobe doesn't complain as it sees no difference between no-match and
bad-pattern results of fnmatch().
Fixing this simple bug to fix the aliases.
Also changing the hardcoded beginning of the range to uppercase as all the
other letters are also uppercase in the device version numbers.
Fortunately, this affects only the dvb-usb-dib0700 module, AFAIK.
Signed-off-by: Jan Moskyto Matejka <[email protected]>
Cc: stable <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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This patch prevents the wireless_set_essid() function from overwriting
the last byte of the NetworkName buffer which must be NULL.
Signed-off-by: Maurizio Lombardi <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Signed-off-by: Alan Cox <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The go_devadd_str[] array is two characters too small to hold the
address so we corrupt memory.
I've changed the user space API slightly and I don't have a way to test
if this breaks anything. In the original code we truncated away the
last digit of the address and the NUL terminator so it was already a bit
broken.
Signed-off-by: Dan Carpenter <[email protected]>
Acked-by: Larry Finger <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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MAX_MP_IOCTL_SUBCODE (35) and mp_ioctl_hdl (32 elements) are no longer
in sync. It leads to a bogus pointer dereference.
Signed-off-by: Dan Carpenter <[email protected]>
Acked-by: Larry Finger <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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There is a typo in the device list that interchanges the vendor and
product codes for one of the entries. This exchange was determined
by noticing that the vendor code is 0x07b8 for Abocom at
http://www.linux-usb.org/usb.ids.
Signed-off-by: Larry Finger <[email protected]>
Cc: stable <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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revised patch
p is freed if NULL.
p is leaked if second calloc fails.
Signed-off-by: Heinrich Schuchardt <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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We dereference "heap->task" before checking if it's an ERR_PTR.
Fixes: ea313b5f88ed ('gpu: ion: Also shrink memory cached in the deferred free list')
Signed-off-by: Dan Carpenter <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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There are a couple of dereferences such as `*(uint32_t
*)(devpriv->insn_buf + 1)` that are unaligned as `devpriv->insn_buf` is
of type `uint8_t *`. This works on x86 architecture but may not be
supported on other architectures. Call `get_unalign()` to perform the
unaligned dereferences.
Signed-off-by: Ian Abbott <[email protected]>
Cc: Bernd Porr <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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`comedi_auto_config()` is usually called from the probe routine of a
low-level comedi driver to allocate and auto-configure a comedi device.
Part of this involves calling the low-level driver's `auto_attach()`
handler, and if that is successful, `comedi_device_postconfig()` tries
to complete the configuration of the comedi device. If either of those
fail, `comedi_device_detach()` is called to clean up, and
`comedi_release_hardware_device()` is called to remove the dynamically
allocated comedi device.
Unfortunately, `comedi_device_detach()` clears the `hw_dev` member of
the `struct comedi_device` (indirectly via `comedi_clear_hw_dev()`), and
that stops `comedi_release_hardware_device()` finding the comedi device
associated with the hardware device, so the comedi device won't be
removed properly.
Since `comedi_release_hardware_device()` also calls
`comedi_device_detach()` (assuming it finds the comedi device associated
with the hardware device), the fix is to remove the direct call to
`comedi_device_detach()` from `comedi_auto_config()` and let the call to
`comedi_release_hardware_device()` take care of it.
Signed-off-by: Ian Abbott <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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We should be returning -ENOMEM here instead of zero.
Signed-off-by: Dan Carpenter <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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To behave the same way as the old request path.
Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
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Make blk-mq handle the dma_drain_size field the same way as the old request
path.
Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
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__blk_put_request needs to call into the blk-mq code just like
blk_put_request. As we don't have the queue lock in this case both
end up calling the same function.
Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
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This is neede for proper SG_IO operation as well as various uses of
blk_execute_rq from the SCSI midlayer.
Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
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Handling redirect replies requires both map_sem and request_mutex.
Taking map_sem unconditionally near the top of handle_reply() avoids
possible race conditions that arise from releasing request_mutex to be
able to acquire map_sem in redirect reply case. (Lock ordering is:
map_sem, request_mutex, crush_mutex.)
Signed-off-by: Ilya Dryomov <[email protected]>
Reviewed-by: Sage Weil <[email protected]>
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Factor out logic from ceph_osdc_start_request() into a new helper,
__ceph_osdc_start_request(). ceph_osdc_start_request() now amounts to
taking locks and calling __ceph_osdc_start_request().
Signed-off-by: Ilya Dryomov <[email protected]>
Reviewed-by: Sage Weil <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
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Backend drivers shouldn't transistion to CLOSED unless the frontend is
CLOSED. If a backend does transition to CLOSED too soon then the
frontend may not see the CLOSING state and will not properly shutdown.
So, treat an unexpected backend CLOSED state the same as CLOSING.
Signed-off-by: David Vrabel <[email protected]>
Acked-by: Konrad Rzeszutek Wilk <[email protected]>
Cc: [email protected]
Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
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This was wrongly introduced in commit 402b27f9, the only difference
between blkif_request_segment_aligned and blkif_request_segment is
that the former has a named padding, while both share the same
memory layout.
Also correct a few minor glitches in the description, including for it
to no longer assume PAGE_SIZE == 4096.
Signed-off-by: Roger Pau Monné <[email protected]>
[Description fix by Jan Beulich]
Signed-off-by: Jan Beulich <[email protected]>
Reported-by: Jan Beulich <[email protected]>
Cc: Konrad Rzeszutek Wilk <[email protected]>
Cc: David Vrabel <[email protected]>
Cc: Boris Ostrovsky <[email protected]>
Tested-by: Matt Rushton <[email protected]>
Cc: Matt Wilson <[email protected]>
Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
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Introduce a new variable to keep track of the number of in-flight
requests. We need to make sure that when xen_blkif_put is called the
request has already been freed and we can safely free xen_blkif, which
was not the case before.
Signed-off-by: Roger Pau Monné <[email protected]>
Cc: Konrad Rzeszutek Wilk <[email protected]>
Cc: David Vrabel <[email protected]>
Reviewed-by: Boris Ostrovsky <[email protected]>
Tested-by: Matt Rushton <[email protected]>
Reviewed-by: Matt Rushton <[email protected]>
Cc: Matt Wilson <[email protected]>
Cc: Ian Campbell <[email protected]>
Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
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I've at least identified two possible memory leaks in blkback, both
related to the shutdown path of a VBD:
- blkback doesn't wait for any pending purge work to finish before
cleaning the list of free_pages. The purge work will call
put_free_pages and thus we might end up with pages being added to
the free_pages list after we have emptied it. Fix this by making
sure there's no pending purge work before exiting
xen_blkif_schedule, and moving the free_page cleanup code to
xen_blkif_free.
- blkback doesn't wait for pending requests to end before cleaning
persistent grants and the list of free_pages. Again this can add
pages to the free_pages list or persistent grants to the
persistent_gnts red-black tree. Fixed by moving the persistent
grants and free_pages cleanup code to xen_blkif_free.
Also, add some checks in xen_blkif_free to make sure we are cleaning
everything.
Signed-off-by: Roger Pau Monné <[email protected]>
Cc: Konrad Rzeszutek Wilk <[email protected]>
Reviewed-by: David Vrabel <[email protected]>
Cc: Boris Ostrovsky <[email protected]>
Tested-by: Matt Rushton <[email protected]>
Reviewed-by: Matt Rushton <[email protected]>
Cc: Matt Wilson <[email protected]>
Cc: Ian Campbell <[email protected]>
Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
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Currently shrink_free_pagepool() is called before the pages used for
persistent grants are released via free_persistent_gnts(). This
results in a memory leak when a VBD that uses persistent grants is
torn down.
Cc: Konrad Rzeszutek Wilk <[email protected]>
Cc: "Roger Pau Monné" <[email protected]>
Cc: Ian Campbell <[email protected]>
Reviewed-by: David Vrabel <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: Anthony Liguori <[email protected]>
Signed-off-by: Matt Rushton <[email protected]>
Signed-off-by: Matt Wilson <[email protected]>
Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
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The changes introduced in commit 4b1a25f06b30b203 ("fix build when
CONFIG_UIDGID_STRICT_TYPE_CHECKS is on") got the UID check the wrong way
around, leading to "Permission denied" when a regular user attempts to
retrieve his quota (lfs quota -u ...) but allowing him to retrieve other
users quota.
Full details at: https://jira.hpdd.intel.com/browse/LU-4530
Cc: Peng Tao <[email protected]>
Cc: <[email protected]> # 3.12.x
Cc: <[email protected]> # 3.13.x
Signed-off-by: Cédric Dufour <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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There is a race condition
Assume we have *one* sync_fence object, with *one* sync_pt
which belongs to *one* sync_timeline, given this condition,
sync_timeline->kref will have two counts, one for sync_timeline
(implicit) and another for sync_pt.
Assume following is the situation on CPU
Theead-1 : (Thread which calls sync_timeline_destroy())
-> (some function calls)
-> sync_timeline_destory()
-> sync_timeline_signal() (CPU is inside this
function after putting reference to sync_timeline)
At this time Thread-2 comes and does following
Thread-2 : (fclose on fence fd)
> sync_fence_release() -> because of fclose() on fence object
-> sync_fence_free()
-> sync_pt_free()
-> kref_put(&pt->parent->kref, sync_timeline_free);
-> sync_timeline_free() (CPU is inside this because
this time kref will be zero after _put)
Thread-2 will free sync_timeline object before Thread-1
has finished its work inside sync_timeline_signal.
With this change we signals all sync_pt before putting
reference to sync_timeline object.
Cc: Colin Cross <[email protected]>
Cc: Android Kernel Team <[email protected]>
Signed-off-by: Prakash Kamliya <[email protected]>
[jstultz: minor commit subject tweak]
Signed-off-by: John Stultz <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The last value written to a analog output channel is cached in the
private data of this driver for readback.
Currently, the wrong value is cached in the (*insn_write) functions.
The current code stores the data[n] value for readback afer the loop
has written all the values. At this time 'n' points past the end of
the data array.
Fix the functions by using a local variable to hold the data being
written to the analog output channel. This variable is then used
after the loop is complete to store the readback value. The current
value is retrieved before the loop in case no values are actually
written..
Signed-off-by: H Hartley Sweeten <[email protected]>
Reviewed-by: Ian Abbott <[email protected]>
Cc: stable <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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We should cap the SSID length at NDIS_802_11_LENGTH_SSID (32) characters
to avoid memory corruption. If the SSID is too long then I have opted
to ignore it instead of truncating it.
We don't need to clear bssid->Ssid.Ssid[0] because this struct is
allocated with rtw_zmalloc()
Signed-off-by: Dan Carpenter <[email protected]>
Acked-by: Larry Finger <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Error handling code in gdm_usb_probe() misses to deallocate
tx_ and rx_structs and to do usb_put_dev().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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FPGA implementations of the Cortex-A57 and Cortex-A53 are now available
in the form of the SMM-A57 and SMM-A53 Soft Macrocell Models (SMMs) for
Versatile Express. As these attach to a Motherboard Express V2M-P1 it
would be useful to have support for some V2M-P1 peripherals enabled by
default.
Additionally a couple of of features have been introduced since the last
defconfig update (CMA, jump labels) that would be good to have enabled
by default to ensure they are build and boot tested.
This patch updates the arm64 defconfig to enable support for these
devices and features. The arm64 Kconfig is modified to select
HAVE_PATA_PLATFORM, which is required to enable support for the
CompactFlash controller on the V2M-P1.
A few options which don't need to appear in defconfig are trimmed:
* BLK_DEV - selected by default
* EXPERIMENTAL - otherwise gone from the kernel
* MII - selected by drivers which require it
* USB_SUPPORT - selected by default
Signed-off-by: Mark Rutland <[email protected]>
Signed-off-by: Catalin Marinas <[email protected]>
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This reverts commit b73db54750482cf3910046c82a84ce8c1684dfbe.
Reported-by: Geert Uytterhoeven <[email protected]>
Reported-by: Chen Gang <[email protected]>
Cc: Rashika Kheria <[email protected]>
Cc: James Hogan <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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If net_dev is NULL memcpy() will Oops.
Signed-off-by: Salym Senyonga <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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When attach fails due to unsupported and/or invalid bus speed, the message
vhci_hcd prints out doesn't include any useful information as to what caused
the failure. Change the message to be informative and use usb_speed_string()
to get the right speed string from usb common.
Signed-off-by: Shuah Khan <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Linus Torvalds writes:
It causes an interesting warning for me:
drivers/staging/rtl8821ae/rtl8821ae/dm.c: In function
‘rtl8821ae_dm_clear_txpower_tracking_state’:
drivers/staging/rtl8821ae/rtl8821ae/dm.c:487:31: warning: iteration 2u
invokes undefined behavior [-Waggressive-loop-optimizations]
rtldm->bb_swing_idx_ofdm[p] = rtldm->default_ofdm_index;
^
drivers/staging/rtl8821ae/rtl8821ae/dm.c:485:2: note: containing loop
for (p = RF90_PATH_A; p < MAX_RF_PATH; ++p) {
^
and gcc is entirely correct: that loop iterates from 0 to 3, and does this:
rtldm->bb_swing_idx_ofdm[p] = rtldm->default_ofdm_index;
but the bb_swing_idx_ofdm[] array only has two members. So the last
two iterations will overwrite bb_swing_idx_ofdm_current and the first
entry in bb_swing_idx_ofdm_base[].
Now, the bug does seem to be benign: bb_swing_idx_ofdm_current isn't
actually ever *used* as far as I can tell, and the first entry of
bb_swing_idx_ofdm_base[] will have been written with that same
"rtldm->default_ofdm_index" value.
But gcc is absolutely correct, and that driver needs fixing.
I've pulled it and will let it be because it doesn't seem to be an
issue in practice, but please fix it. The obvious fix would seem to
change the size of "2" to be "MAX_RF_PATH", but I'll abstain from
doing those kinds of changes in the merge when it doesn't seem to
affect the build or functionality).
Reported-By: Linus Torvalds <[email protected]>
Signed-off-by: Surendra Patil <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Extract clocking parameters from the device tree, and remove now dead
code and types.
Signed-off-by: David Daney <[email protected]>
Tested-by: Aaro Koskinen <[email protected]>
Signed-off-by: Aaro Koskinen <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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Signed-off-by: Oleg Drokin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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The kernel to userspace communication routines (KUC) allocate
and limit the maximum cs_buf size to CR_MAXSIZE. However this
fails to account for the fact that the buffer is assumed to begin
with a struct kuc_hdr. To allocate and account for that space,
we introduce a new define, KUC_CHANGELOG_MSG_MAXSIZE.
Signed-off-by: Christopher J. Morrone <[email protected]>
Reviewed-on: http://review.whamcloud.com/7406
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3587
Reviewed-by: Andreas Dilger <[email protected]>
Reviewed-by: jacques-Charles Lafoucriere <[email protected]>
Reviewed-by: Oleg Drokin <[email protected]>
Signed-off-by: Oleg Drokin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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CR_MAXSIZE needs to account for an llog_changelog_rec that actually
contains a changelog_ext_rec structure rather than a changelog_rec.
With out doing so, a file size approaching the Linux kernel NAME_MAX
length that is renamed to a size also close to, or at, NAME_MAX will
exceed CR_MAXSIZE and trip an assertion.
Signed-off-by: Christopher J. Morrone <[email protected]>
Reviewed-on: http://review.whamcloud.com/6993
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3587
Reviewed-by: Niu Yawei <[email protected]>
Reviewed-by: Lai Siyao <[email protected]>
Reviewed-by: Oleg Drokin <[email protected]>
Signed-off-by: Oleg Drokin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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