Christoph Hellwig [Wed, 14 Sep 2016 14:18:52 +0000 (16:18 +0200)]
blk-mq: don't redistribute hardware queues on a CPU hotplug event
Currently blk-mq will totally remap hardware context when a CPU hotplug
even happened, which causes major havoc for drivers, as they are never
told about this remapping. E.g. any carefully sorted out CPU affinity
will just be completely messed up.
The rebuild also doesn't really help for the common case of cpu
hotplug, which is soft onlining / offlining of cpus - in this case we
should just leave the queue and irq mapping as is. If it actually
worked it would have helped in the case of physical cpu hotplug,
although for that we'd need a way to actually notify the driver.
Note that drivers may already be able to accommodate such a topology
change on their own, e.g. using the reset_controller sysfs file in NVMe
will cause the driver to get things right for this case.
With the rebuild removed we will simplify retain the queue mapping for
a soft offlined CPU that will work when it comes back online, and will
map any newly onlined CPU to queue 0 until the driver initiates
a rebuild of the queue map.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Jens Axboe [Thu, 15 Sep 2016 14:38:34 +0000 (08:38 -0600)]
Merge branch 'irq/for-block' of git://git./linux/kernel/git/tip/tip into for-4.9/msi-irq
Thomas Gleixner [Wed, 14 Sep 2016 14:18:51 +0000 (16:18 +0200)]
pci/msi: Retrieve affinity for a vector
Add a helper to get the affinity mask for a given PCI irq vector. For MSI or
MSI-X vectors these are stored by the IRQ core, while for legacy interrupts
we will always return cpu_possible_map.
[hch: updated to follow the style of pci_irq_vector()]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: axboe@fb.com
Cc: keith.busch@intel.com
Cc: agordeev@redhat.com
Cc: linux-block@vger.kernel.org
Link: http://lkml.kernel.org/r/1473862739-15032-6-git-send-email-hch@lst.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Wed, 14 Sep 2016 14:18:50 +0000 (16:18 +0200)]
genirq/affinity: Remove old irq spread infrastructure
No more users.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: axboe@fb.com
Cc: keith.busch@intel.com
Cc: agordeev@redhat.com
Cc: linux-block@vger.kernel.org
Link: http://lkml.kernel.org/r/1473862739-15032-5-git-send-email-hch@lst.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Wed, 14 Sep 2016 14:18:49 +0000 (16:18 +0200)]
genirq/msi: Switch to new irq spreading infrastructure
Switch MSI over to the new spreading code. If a pci device contains a valid
pointer to a cpumask, then this mask is used for spreading otherwise the
online cpu mask is used. This allows a driver to restrict the spread to a
subset of CPUs, e.g. cpus on a particular node.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: axboe@fb.com
Cc: keith.busch@intel.com
Cc: agordeev@redhat.com
Cc: linux-block@vger.kernel.org
Link: http://lkml.kernel.org/r/1473862739-15032-4-git-send-email-hch@lst.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Thomas Gleixner [Wed, 14 Sep 2016 14:18:48 +0000 (16:18 +0200)]
genirq/affinity: Provide smarter irq spreading infrastructure
The current irq spreading infrastructure is just looking at a cpumask and
tries to spread the interrupts over the mask. Thats suboptimal as it does
not take numa nodes into account.
Change the logic so the interrupts are spread across numa nodes and inside
the nodes. If there are more cpus than vectors per node, then we set the
affinity to several cpus. If HT siblings are available we take that into
account and try to set all siblings to a single vector.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: axboe@fb.com
Cc: keith.busch@intel.com
Cc: agordeev@redhat.com
Cc: linux-block@vger.kernel.org
Link: http://lkml.kernel.org/r/1473862739-15032-3-git-send-email-hch@lst.de
Thomas Gleixner [Wed, 14 Sep 2016 14:18:47 +0000 (16:18 +0200)]
genirq/msi: Add cpumask allocation to alloc_msi_entry
For irq spreading want to store affinity masks in the msi_entry. Add the
infrastructure for it.
We allocate an array of cpumasks with an array size of the number of used
vectors in the entry, so we can hand in the information per linux interrupt
later.
As we hand in the number of used vectors, we assign them right
away. Convert all the call sites.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: axboe@fb.com
Cc: keith.busch@intel.com
Cc: agordeev@redhat.com
Cc: linux-block@vger.kernel.org
Cc: Christoph Hellwig <hch@lst.de>
Link: http://lkml.kernel.org/r/1473862739-15032-2-git-send-email-hch@lst.de
Mike Snitzer [Wed, 14 Sep 2016 17:28:30 +0000 (13:28 -0400)]
blk-mq: introduce blk_mq_delay_kick_requeue_list()
blk_mq_delay_kick_requeue_list() provides the ability to kick the
q->requeue_list after a specified time. To do this the request_queue's
'requeue_work' member was changed to a delayed_work.
blk_mq_delay_kick_requeue_list() allows DM to defer processing requeued
requests while it doesn't make sense to immediately requeue them
(e.g. when all paths in a DM multipath have failed).
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Christoph Hellwig [Sun, 11 Sep 2016 14:03:04 +0000 (16:03 +0200)]
block: remove IOPRIO_BITS
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Christoph Hellwig [Sun, 11 Sep 2016 14:03:03 +0000 (16:03 +0200)]
bio.h: remove a very outdated comment
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Christoph Hellwig [Sun, 11 Sep 2016 14:03:02 +0000 (16:03 +0200)]
block: remove bio_destructor_t
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Bart Van Assche [Wed, 14 Sep 2016 08:46:22 +0000 (10:46 +0200)]
block: Improve bio_set_op_attrs() robustness
Since REQ_OP_BITS == 3 and __REQ_NR_BITS == 30 it is not that hard
to pass an op_flags argument to bio_set_op_attrs() that is larger
than the number of bits reserved for the op_flags argument. Complain
if this happens. Additionally, ensure that negative arguments trigger
a complaint (1 << ... is signed while 1U << ... is unsigned; adding
0U to an integer expression causes it to be promoted to an unsigned
type).
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Mike Christie <mchristi@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Damien Le Moal <damien.lemoal@hgst.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Bart Van Assche [Wed, 14 Sep 2016 08:45:36 +0000 (10:45 +0200)]
block, dm-crypt, btrfs: Introduce bio_flags()
Introduce the bio_flags() macro. Ensure that the second argument of
bio_set_op_attrs() only contains flags and no operation. This patch
does not change any functionality.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Mike Christie <mchristi@redhat.com>
Cc: Chris Mason <clm@fb.com> (maintainer:BTRFS FILE SYSTEM)
Cc: Josef Bacik <jbacik@fb.com> (maintainer:BTRFS FILE SYSTEM)
Cc: Mike Snitzer <snitzer@redhat.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Damien Le Moal <damien.lemoal@hgst.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Bart Van Assche [Wed, 14 Sep 2016 08:44:12 +0000 (10:44 +0200)]
block: Document that bio_op() uses the data type of bio.bi_opf
Make it clear that the sizeof(unsigned int) expression in BIO_OP_SHIFT
refers to the bi_opf member of struct bio.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Mike Christie <mchristi@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Damien Le Moal <damien.lemoal@hgst.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Linus Walleij [Wed, 14 Sep 2016 12:32:52 +0000 (14:32 +0200)]
block: remove remnant refs to hardsect
commit
e1defc4ff0cf57aca6c5e3ff99fa503f5943c1f1
"block: Do away with the notion of hardsect_size"
removed the notion of "hardware sector size" from
the kernel in favor of logical block size, but
references remain in comments and documentation.
Update the remaining sites mentioning hardsect.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Linus Walleij [Wed, 14 Sep 2016 12:33:15 +0000 (14:33 +0200)]
block: remove blk_mq_alloc_single_hw_queue() prototype
The blk_mq_alloc_single_hw_queue() is a prototype artifact that
should have been removed with
commit
cdef54dd85ad66e77262ea57796a3e81683dd5d6
"blk-mq: remove alloc_hctx and free_hctx methods" where the last
users of it were deleted.
Fixes:
cdef54dd85ad ("blk-mq: remove alloc_hctx and free_hctx methods")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Christoph Hellwig [Wed, 14 Sep 2016 09:56:13 +0000 (11:56 +0200)]
block_dev: remove DAX leftovers
DAX support for block devices was removed in commits 03cdad
("block: disable block device DAX by default") and
99a01cd
("block: remove BLK_DEV_DAX config option"), but we still kept a call to
dax_do_io and some uneeded i_flags manipulations introduced in commit
bbab37 ("block: Add support for DAX reads/writes to block devices").
Remove those leftovers.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Stephen Bates [Tue, 13 Sep 2016 18:23:16 +0000 (12:23 -0600)]
block: enable zeroing of io_poll statistics
Allow the io_poll statistics to be zeroed to make for easier logging
of polling event.
Signed-off-by: Stephen Bates <sbates@raithlin.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Stephen Bates [Tue, 13 Sep 2016 18:23:15 +0000 (12:23 -0600)]
block: add poll_considered statistic
In order to help determine the effectiveness of polling in a running
system it is usful to determine the ratio of how often the poll
function is called vs how often the completion is checked. For this
reason we add a poll_considered variable and add it to the sysfs entry
for io_poll.
Signed-off-by: Stephen Bates <sbates@raithlin.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Linus Torvalds [Mon, 12 Sep 2016 03:02:25 +0000 (20:02 -0700)]
Linux 4.8-rc6
Linus Torvalds [Sun, 11 Sep 2016 21:41:49 +0000 (14:41 -0700)]
nvme: make NVME_RDMA depend on BLOCK
Commit
aa71987472a9 ("nvme: fabrics drivers don't need the nvme-pci
driver") removed the dependency on BLK_DEV_NVME, but the cdoe does
depend on the block layer (which used to be an implicit dependency
through BLK_DEV_NVME).
Otherwise you get various errors from the kbuild test robot random
config testing when that happens to hit a configuration with BLOCK
device support disabled.
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jay Freyensee <james_p_freyensee@linux.intel.com>
Cc: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 11 Sep 2016 21:23:48 +0000 (14:23 -0700)]
Merge tag 'staging-4.8-rc6' of git://git./linux/kernel/git/gregkh/staging
Pull IIO fixes from Greg KH:
"Here are a few small IIO fixes for 4.8-rc6.
Nothing major, full details are in the shortlog, all of these have
been in linux-next with no reported issues"
* tag 'staging-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
iio:core: fix IIO_VAL_FRACTIONAL sign handling
iio: ensure ret is initialized to zero before entering do loop
iio: accel: kxsd9: Fix scaling bug
iio: accel: bmc150: reset chip at init time
iio: fix pressure data output unit in hid-sensor-attributes
tools:iio:iio_generic_buffer: fix trigger-less mode
Linus Torvalds [Sun, 11 Sep 2016 21:10:29 +0000 (14:10 -0700)]
Merge tag 'usb-4.8-rc6' of git://git./linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are some small USB gadget, phy, and xhci fixes for 4.8-rc6.
All of these resolve minor issues that have been reported, and all
have been in linux-next with no reported issues"
* tag 'usb-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: chipidea: udc: fix NULL ptr dereference in isr_setup_status_phase
xhci: fix null pointer dereference in stop command timeout function
usb: dwc3: pci: fix build warning on !PM_SLEEP
usb: gadget: prevent potenial null pointer dereference on skb->len
usb: renesas_usbhs: fix clearing the {BRDY,BEMP}STS condition
usb: phy: phy-generic: Check clk_prepare_enable() error
usb: gadget: udc: renesas-usb3: clear VBOUT bit in DRD_CON
Revert "usb: dwc3: gadget: always decrement by 1"
Linus Torvalds [Sat, 10 Sep 2016 16:58:52 +0000 (09:58 -0700)]
Merge branch 'libnvdimm-fixes' of git://git./linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:
"nvdimm fixes for v4.8, two of them are tagged for -stable:
- Fix devm_memremap_pages() to use track_pfn_insert(). Otherwise,
DAX pmd mappings end up with an uncached pgprot, and unusable
performance for the device-dax interface. The device-dax interface
appeared in 4.7 so this is tagged for -stable.
- Fix a couple VM_BUG_ON() checks in the show_smaps() path to
understand DAX pmd entries. This fix is tagged for -stable.
- Fix a mis-merge of the nfit machine-check handler to flip the
polarity of an if() to match the final version of the patch that
Vishal sent for 4.8-rc1. Without this the nfit machine check
handler never detects / inserts new 'badblocks' entries which
applications use to identify lost portions of files.
- For test purposes, fix the nvdimm_clear_poison() path to operate on
legacy / simulated nvdimm memory ranges. Without this fix a test
can set badblocks, but never clear them on these ranges.
- Fix the range checking done by dax_dev_pmd_fault(). This is not
tagged for -stable since this problem is mitigated by specifying
aligned resources at device-dax setup time.
These patches have appeared in a next release over the past week. The
recent rebase you can see in the timestamps was to drop an invalid fix
as identified by the updated device-dax unit tests [1]. The -mm
touches have an ack from Andrew"
[1]: "[ndctl PATCH 0/3] device-dax test for recent kernel bugs"
https://lists.01.org/pipermail/linux-nvdimm/2016-September/006855.html
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
libnvdimm: allow legacy (e820) pmem region to clear bad blocks
nfit, mce: Fix SPA matching logic in MCE handler
mm: fix cache mode of dax pmd mappings
mm: fix show_smap() for zone_device-pmd ranges
dax: fix mapping size check
Linus Torvalds [Sat, 10 Sep 2016 16:43:10 +0000 (09:43 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"Mostly driver bugfixes, but also a few cleanups which are nice to have
out of the way"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: rk3x: Restore clock settings at resume time
i2c: Spelling s/acknowedge/acknowledge/
i2c: designware: save the preset value of DW_IC_SDA_HOLD
Documentation: i2c: slave-interface: add note for driver development
i2c: mux: demux-pinctrl: run properly with multiple instances
i2c: bcm-kona: fix inconsistent indenting
i2c: rcar: use proper device with dma_mapping_error
i2c: sh_mobile: use proper device with dma_mapping_error
i2c: mux: demux-pinctrl: invalidate properly when switching fails
Linus Torvalds [Sat, 10 Sep 2016 16:18:33 +0000 (09:18 -0700)]
Merge tag 'for_linus_stable' of git://git./linux/kernel/git/tytso/ext4
Pull fscrypto fixes fromTed Ts'o:
"Fix some brown-paper-bag bugs for fscrypto, including one one which
allows a malicious user to set an encryption policy on an empty
directory which they do not own"
* tag 'for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
fscrypto: require write access to mount to set encryption policy
fscrypto: only allow setting encryption policy on directories
fscrypto: add authorization check for setting encryption policy
Eric Biggers [Thu, 8 Sep 2016 21:20:38 +0000 (14:20 -0700)]
fscrypto: require write access to mount to set encryption policy
Since setting an encryption policy requires writing metadata to the
filesystem, it should be guarded by mnt_want_write/mnt_drop_write.
Otherwise, a user could cause a write to a frozen or readonly
filesystem. This was handled correctly by f2fs but not by ext4. Make
fscrypt_process_policy() handle it rather than relying on the filesystem
to get it right.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Cc: stable@vger.kernel.org # 4.1+; check fs/{ext4,f2fs}
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Jaegeuk Kim <jaegeuk@kernel.org>
Eric Biggers [Thu, 8 Sep 2016 18:36:39 +0000 (11:36 -0700)]
fscrypto: only allow setting encryption policy on directories
The FS_IOC_SET_ENCRYPTION_POLICY ioctl allowed setting an encryption
policy on nondirectory files. This was unintentional, and in the case
of nonempty regular files did not behave as expected because existing
data was not actually encrypted by the ioctl.
In the case of ext4, the user could also trigger filesystem errors in
->empty_dir(), e.g. due to mismatched "directory" checksums when the
kernel incorrectly tried to interpret a regular file as a directory.
This bug affected ext4 with kernels v4.8-rc1 or later and f2fs with
kernels v4.6 and later. It appears that older kernels only permitted
directories and that the check was accidentally lost during the
refactoring to share the file encryption code between ext4 and f2fs.
This patch restores the !S_ISDIR() check that was present in older
kernels.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Eric Biggers [Thu, 8 Sep 2016 17:57:08 +0000 (10:57 -0700)]
fscrypto: add authorization check for setting encryption policy
On an ext4 or f2fs filesystem with file encryption supported, a user
could set an encryption policy on any empty directory(*) to which they
had readonly access. This is obviously problematic, since such a
directory might be owned by another user and the new encryption policy
would prevent that other user from creating files in their own directory
(for example).
Fix this by requiring inode_owner_or_capable() permission to set an
encryption policy. This means that either the caller must own the file,
or the caller must have the capability CAP_FOWNER.
(*) Or also on any regular file, for f2fs v4.6 and later and ext4
v4.8-rc1 and later; a separate bug fix is coming for that.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Cc: stable@vger.kernel.org # 4.1+; check fs/{ext4,f2fs}
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Dave Jiang [Fri, 9 Sep 2016 16:10:08 +0000 (09:10 -0700)]
libnvdimm: allow legacy (e820) pmem region to clear bad blocks
Bad blocks can be injected via /sys/block/pmemN/badblocks. In a situation
where legacy pmem is being used or a pmem region created by using memmap
kernel parameter, the injected bad blocks are not cleared due to
nvdimm_clear_poison() failing from lack of ndctl function pointer. In
this case we need to just return as handled and allow the bad blocks to
be cleared rather than fail.
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Vishal Verma [Fri, 2 Sep 2016 23:27:30 +0000 (17:27 -0600)]
nfit, mce: Fix SPA matching logic in MCE handler
The check for a 'pmem' type SPA in the MCE handler was inverted due to a
merge/rebase error.
Fixes:
6839a6d nfit: do an ARS scrub on hitting a latent media error
Cc: linux-acpi@vger.kernel.org
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>
Dan Williams [Wed, 7 Sep 2016 15:51:21 +0000 (08:51 -0700)]
mm: fix cache mode of dax pmd mappings
track_pfn_insert() in vmf_insert_pfn_pmd() is marking dax mappings as
uncacheable rendering them impractical for application usage. DAX-pte
mappings are cached and the goal of establishing DAX-pmd mappings is to
attain more performance, not dramatically less (3 orders of magnitude).
track_pfn_insert() relies on a previous call to reserve_memtype() to
establish the expected page_cache_mode for the range. While memremap()
arranges for reserve_memtype() to be called, devm_memremap_pages() does
not. So, teach track_pfn_insert() and untrack_pfn() how to handle
tracking without a vma, and arrange for devm_memremap_pages() to
establish the write-back-cache reservation in the memtype tree.
Cc: <stable@vger.kernel.org>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Nilesh Choudhury <nilesh.choudhury@oracle.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Toshi Kani <toshi.kani@hpe.com>
Reported-by: Kai Zhang <kai.ka.zhang@oracle.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Dan Williams [Sat, 3 Sep 2016 17:38:03 +0000 (10:38 -0700)]
mm: fix show_smap() for zone_device-pmd ranges
Attempting to dump /proc/<pid>/smaps for a process with pmd dax mappings
currently results in the following VM_BUG_ONs:
kernel BUG at mm/huge_memory.c:1105!
task:
ffff88045f16b140 task.stack:
ffff88045be14000
RIP: 0010:[<
ffffffff81268f9b>] [<
ffffffff81268f9b>] follow_trans_huge_pmd+0x2cb/0x340
[..]
Call Trace:
[<
ffffffff81306030>] smaps_pte_range+0xa0/0x4b0
[<
ffffffff814c2755>] ? vsnprintf+0x255/0x4c0
[<
ffffffff8123c46e>] __walk_page_range+0x1fe/0x4d0
[<
ffffffff8123c8a2>] walk_page_vma+0x62/0x80
[<
ffffffff81307656>] show_smap+0xa6/0x2b0
kernel BUG at fs/proc/task_mmu.c:585!
RIP: 0010:[<
ffffffff81306469>] [<
ffffffff81306469>] smaps_pte_range+0x499/0x4b0
Call Trace:
[<
ffffffff814c2795>] ? vsnprintf+0x255/0x4c0
[<
ffffffff8123c46e>] __walk_page_range+0x1fe/0x4d0
[<
ffffffff8123c8a2>] walk_page_vma+0x62/0x80
[<
ffffffff81307696>] show_smap+0xa6/0x2b0
These locations are sanity checking page flags that must be set for an
anonymous transparent huge page, but are not set for the zone_device
pages associated with dax mappings.
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Linus Torvalds [Fri, 9 Sep 2016 21:52:05 +0000 (14:52 -0700)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost
Pull virtio fixes from Michael Tsirkin:
"This includes a couple of bugfixs for virtio.
The virtio console patch is actually also in x86/tip targeting 4.9
because it helps vmap stacks, but it also fixes IOMMU_PLATFORM which
was added in 4.8, and it seems important not to ship that in a broken
configuration"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
virtio_console: Stop doing DMA on the stack
virtio: mark vring_dma_dev() static
Linus Torvalds [Fri, 9 Sep 2016 21:47:41 +0000 (14:47 -0700)]
Merge tag 'pm-4.8-rc6' of git://git./linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"This includes a PM QoS framework fix from Tejun to prevent interrupts
from being enabled unexpectedly during early boot and a cpufreq
documentation fix.
Specifics:
- If the PM QoS framework invokes cancel_delayed_work_sync() during
early boot, it will enable interrupts which is not expected at that
point, so prevent it from happening (Tejun Heo)
- Fix cpufreq statistic documentation to follow a recent change in
behavior that forgot to update it as appropriate (Jean Delvare)"
* tag 'pm-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq-stats: Minor documentation fix
PM / QoS: avoid calling cancel_delayed_work_sync() during early boot
Rafael J. Wysocki [Fri, 9 Sep 2016 20:34:16 +0000 (22:34 +0200)]
Merge branches 'pm-core-fixes' and 'pm-cpufreq-fixes'
* pm-core-fixes:
PM / QoS: avoid calling cancel_delayed_work_sync() during early boot
* pm-cpufreq-fixes:
cpufreq-stats: Minor documentation fix
Linus Torvalds [Fri, 9 Sep 2016 20:09:50 +0000 (13:09 -0700)]
Merge tag 'gpio-v4.8-3' of git://git./linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Some GPIO fixes that have been boiling the last two weeks or so.
Nothing special, I'm trying to sort out some Kconfig business and
Russell needs a fix in for -his SA1100 rework.
Summary:
- Revert a pointless attempt to add an include to solve the UM allyes
compilation problem.
- Make the mcp23s08 depend on OF_GPIO as it uses it and doesn't
compile properly without it.
- Fix a probing problem for ucb1x00"
* tag 'gpio-v4.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: sa1100: fix irq probing for ucb1x00
gpio: mcp23s08: make driver depend on OF_GPIO
Revert "gpio: include <linux/io-mapping.h> in gpiolib-of"
Linus Torvalds [Fri, 9 Sep 2016 20:00:41 +0000 (13:00 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mszeredi/fuse
Pull fuse fix from Miklos Szeredi:
"This fixes a deadlock when fuse, direct I/O and loop device are
combined"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: direct-io: don't dirty ITER_BVEC pages
Linus Torvalds [Fri, 9 Sep 2016 19:56:28 +0000 (12:56 -0700)]
Merge branch 'overlayfs-linus' of git://git./linux/kernel/git/mszeredi/vfs
Pull overlayfs fix from Miklos Szeredi:
"This fixes a regression caused by the last pull request"
* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: fix workdir creation
Linus Torvalds [Fri, 9 Sep 2016 19:52:31 +0000 (12:52 -0700)]
Merge branch 'for-linus-4.8' of git://git./linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
"I'm not proud of how long it took me to track down that one liner in
btrfs_sync_log(), but the good news is the patches I was trying to
blame for these problems were actually fine (sorry Filipe)"
* 'for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
btrfs: introduce tickets_id to determine whether asynchronous metadata reclaim work makes progress
btrfs: remove root_log_ctx from ctx list before btrfs_sync_log returns
btrfs: do not decrease bytes_may_use when replaying extents
Linus Torvalds [Fri, 9 Sep 2016 19:02:46 +0000 (12:02 -0700)]
Merge tag 'sound-4.8-rc6' of git://git./linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"We've got quite a few fixes at this time, and all are stable patches.
syzkaller strikes back again (episode 19 or so), and we had to plug
some holes in ALSA core part (mostly timer).
In addition, a couple of FireWire audio fixes for the invalid copy
user calls in locks, and a few quirks for HD-audio and USB-audio as
usual are included"
* tag 'sound-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: rawmidi: Fix possible deadlock with virmidi registration
ALSA: timer: Fix zero-division by continue of uninitialized instance
ALSA: timer: fix NULL pointer dereference in read()/ioctl() race
ALSA: fireworks: accessing to user space outside spinlock
ALSA: firewire-tascam: accessing to user space outside spinlock
ALSA: hda - Enable subwoofer on Dell Inspiron 7559
ALSA: hda - Add headset mic quirk for Dell Inspiron 5468
ALSA: usb-audio: Add sample rate inquiry quirk for B850V3 CP2114
ALSA: timer: fix NULL pointer dereference on memory allocation failure
ALSA: timer: fix division by zero after SNDRV_TIMER_IOCTL_CONTINUE
Andy Lutomirski [Tue, 30 Aug 2016 15:04:15 +0000 (08:04 -0700)]
virtio_console: Stop doing DMA on the stack
virtio_console uses a small DMA buffer for control requests. Move
that buffer into heap memory.
Doing virtio DMA on the stack is normally okay on non-DMA-API virtio
systems (which is currently most of them), but it breaks completely
if the stack is virtually mapped.
Tested by typing both directions using picocom aimed at /dev/hvc0.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Baoyou Xie [Thu, 1 Sep 2016 11:02:57 +0000 (19:02 +0800)]
virtio: mark vring_dma_dev() static
We get 1 warning when building kernel with W=1:
drivers/virtio/virtio_ring.c:170:16: warning: no previous prototype for 'vring_dma_dev' [-Wmissing-prototypes]
In fact, this function is only used in the file in which it is
declared and don't need a declaration, but can be made static.
so this patch marks this function with 'static'.
Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Linus Torvalds [Fri, 9 Sep 2016 17:54:29 +0000 (10:54 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- smp_mb__before_spinlock() changed to smp_mb() on arm64 since the
generic definition to smp_wmb() is not sufficient
- avoid a recursive loop with the graph tracer by using using
preempt_(enable|disable)_notrace in _percpu_(read|write)
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: use preempt_disable_notrace in _percpu_read/write
arm64: spinlocks: implement smp_mb__before_spinlock() as smp_mb()
Linus Torvalds [Fri, 9 Sep 2016 15:43:42 +0000 (08:43 -0700)]
Merge tag 'powerpc-4.8-5' of git://git./linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Fixes marked for stable:
- Don't alias user region to other regions below PAGE_OFFSET from
Paul Mackerras
- Fix again csum_partial_copy_generic() on 32-bit from Christophe
Leroy
- Fix corrupted PE allocation bitmap on releasing PE from Gavin Shan
Fixes for code merged this cycle:
- Fix crash on releasing compound PE from Gavin Shan
- Fix processor numbers in OPAL ICP from Benjamin Herrenschmidt
- Fix little endian build with CONFIG_KEXEC=n from Thiago Jung
Bauermann"
* tag 'powerpc-4.8-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/mm: Don't alias user region to other regions below PAGE_OFFSET
powerpc/32: Fix again csum_partial_copy_generic()
powerpc/powernv: Fix corrupted PE allocation bitmap on releasing PE
powerpc/powernv: Fix crash on releasing compound PE
powerpc/xics/opal: Fix processor numbers in OPAL ICP
powerpc/pseries: Fix little endian build with CONFIG_KEXEC=n
Linus Torvalds [Fri, 9 Sep 2016 15:32:10 +0000 (08:32 -0700)]
Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
"A few ARM fixes:
- Robin Murphy noticed that the non-secure privileged entry was
relying on undefined behaviour, which needed to be fixed.
- Vladimir Murzin noticed that prov-v7 fails to build for MMUless
configurations because a required header file wasn't included.
- A bunch of fixes for StrongARM regressions found while testing
4.8-rc on such platforms"
* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: sa1100: clear reset status prior to reboot
ARM: 8600/1: Enforce some NS-SVC initialisation
ARM: 8599/1: mm: pull asm/memory.h explicitly
ARM: sa1100: register clocks early
ARM: sa1100: fix 3.6864MHz clock
Greg Kroah-Hartman [Fri, 9 Sep 2016 13:11:35 +0000 (15:11 +0200)]
Merge tag 'fixes-for-v4.8-rc6' of git://git./linux/kernel/git/balbi/usb into usb-linus
Felipe writes:
usb: fixes for v4.8-rc6
Unfortunately we have a bogus dwc3 patch leaked through the cracks and
got merged into Linus' HEAD. That patch ended up causing off-by-1 error
in our TRB accounting logic. Thankfully John Youn found out the problem
and we provided a revert to the bogus dwc3 patch in no time.
Apart from this off-by-1 error, we have two fixes to the Renesas drivers,
a small fix to our generic phy driver, a NULL pointer dereference fix for
f_eem and a build warning fix in dwc3.
Greg Kroah-Hartman [Fri, 9 Sep 2016 11:47:20 +0000 (13:47 +0200)]
Merge tag 'usb-ci-v4.8-rc6' of git://git./linux/kernel/git/peter.chen/usb into usb-linus
Peter writes:
Fix the possible kernel panic when the hardware signal is bad for chipidea udc.
Greg Kroah-Hartman [Fri, 9 Sep 2016 11:44:37 +0000 (13:44 +0200)]
Merge tag 'iio-fixes-for-4.8b' of git://git./linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
Second set of IIO fixes for the 4.8 cycle.
We have a big rework of the kxsd9 driver queued up behind the fix below and
a fix for a recent fix that was marked for stable.
Hence this fix series is perhaps a little more urgent than average for IIO.
* core
- a fix for a fix in the last set. The recent fix for blocking ops when
! task running left a path (unlikely one) in which the function return
value was not set - so initialise it to 0.
- The IIO_TYPE_FRACTIONAL code previously didn't cope with negative
fractions. Turned out a fix for this was in Analog's tree but hadn't made
it upstream.
* bmc150
- reset chip at init time. At least one board out there ends up coming up
in an unstable state due to noise during power up. The reset does no
harm on other boards.
* kxsd9
- Fix a bug in the reported scaling due to failing to set the integer
part to 0.
* hid-sensors-pressure
- Output was in the wrong units to comply with the IIO ABI.
* tools
- iio_generic_buffer: Fix the trigger-less mode by ensuring we don't fault
out for having no trigger when we explicitly said we didn't want to have
one.
Chunyan Zhang [Thu, 8 Sep 2016 12:46:42 +0000 (20:46 +0800)]
arm64: use preempt_disable_notrace in _percpu_read/write
When debug preempt or preempt tracer is enabled, preempt_count_add/sub()
can be traced by function and function graph tracing, and
preempt_disable/enable() would call preempt_count_add/sub(), so in Ftrace
subsystem we should use preempt_disable/enable_notrace instead.
In the commit
345ddcc882d8 ("ftrace: Have set_ftrace_pid use the bitmap
like events do") the function this_cpu_read() was added to
trace_graph_entry(), and if this_cpu_read() calls preempt_disable(), graph
tracer will go into a recursive loop, even if the tracing_on is
disabled.
So this patch change to use preempt_enable/disable_notrace instead in
this_cpu_read().
Since Yonghui Yang helped a lot to find the root cause of this problem,
so also add his SOB.
Signed-off-by: Yonghui Yang <mark.yang@spreadtrum.com>
Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Will Deacon [Mon, 5 Sep 2016 10:56:05 +0000 (11:56 +0100)]
arm64: spinlocks: implement smp_mb__before_spinlock() as smp_mb()
smp_mb__before_spinlock() is intended to upgrade a spin_lock() operation
to a full barrier, such that prior stores are ordered with respect to
loads and stores occuring inside the critical section.
Unfortunately, the core code defines the barrier as smp_wmb(), which
is insufficient to provide the required ordering guarantees when used in
conjunction with our load-acquire-based spinlock implementation.
This patch overrides the arm64 definition of smp_mb__before_spinlock()
to map to a full smp_mb().
Cc: <stable@vger.kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Reported-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Clemens Gruber [Mon, 5 Sep 2016 17:29:58 +0000 (19:29 +0200)]
usb: chipidea: udc: fix NULL ptr dereference in isr_setup_status_phase
Problems with the signal integrity of the high speed USB data lines or
noise on reference ground lines can cause the i.MX6 USB controller to
violate USB specs and exhibit unexpected behavior.
It was observed that USBi_UI interrupts were triggered first and when
isr_setup_status_phase was called, ci->status was NULL, which lead to a
NULL pointer dereference kernel panic.
This patch fixes the kernel panic, emits a warning once and returns
-EPIPE to halt the device and let the host get stalled.
It also adds a comment to point people, who are experiencing this issue,
to their USB hardware design.
Cc: <stable@vger.kernel.org> #4.1+
Signed-off-by: Clemens Gruber <clemens.gruber@pqgruber.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Jean Delvare [Thu, 8 Sep 2016 21:05:07 +0000 (23:05 +0200)]
cpufreq-stats: Minor documentation fix
The cpufreq-stats code can no longer be built as a module, so it now
appears with square brackets in menuconfig.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Fixes:
1aefc75b2449 (cpufreq: stats: Make the stats code non-modular)
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Doug Anderson [Mon, 29 Aug 2016 21:22:36 +0000 (14:22 -0700)]
i2c: rk3x: Restore clock settings at resume time
Depending on a number of factors including:
- Which exact Rockchip SoC we're working with
- How deep we suspend
- Which i2c port we're on
We might lose the state of the i2c registers at suspend time.
Specifically we've found that on rk3399 the i2c ports that are not in
the PMU power domain lose their state with the current suspend depth
configured by ARM Tursted Firmware.
Note that there are very few actual i2c registers that aren't configured
per transfer anyway so all we actually need to re-configure are the
clock config registers. We'll just add a call to rk3x_i2c_adapt_div()
at resume time and be done with it.
NOTE: On rk3399 on ports whose power was lost, I put printouts in at
resume time. I saw things like:
before: con=0x00010300, div=0x00060006
after: con=0x00010200, div=0x00180025
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: David Wu <david.wu@rock-chips.com>
Tested-by: David Wu <david.wu@rock-chips.com>
[wsa: removed duplicate const]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Geert Uytterhoeven [Wed, 31 Aug 2016 09:38:48 +0000 (11:38 +0200)]
i2c: Spelling s/acknowedge/acknowledge/
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Zhuo-hao Lee [Sat, 27 Aug 2016 07:39:30 +0000 (15:39 +0800)]
i2c: designware: save the preset value of DW_IC_SDA_HOLD
There are several ways to set the SDA hold time for i2c controller,
including: Device Tree, built-in device properties and ACPI. However,
if the SDA hold time is not specified by above method, we should
read the value, where it is preset by firmware, and save it to
sda_hold_time. This is needed because when i2c controller enters
runtime suspend, the DW_IC_SDA_HOLD value will be reset to chipset
default value. And during runtime resume, i2c_dw_init will be called
to reconfigure i2c controller. If sda_hold_time is zero, the chipset
default hold time will be used, that will be too short for some
platforms. Therefore, to have a better tolerance, the DW_IC_SDA_HOLD
value should be kept by sda_hold_time.
Signed-off-by: Zhuo-hao Lee <zhuo-hao.lee@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Josef Bacik [Thu, 8 Sep 2016 19:33:40 +0000 (12:33 -0700)]
nbd: allow block mq to deal with timeouts
Instead of rolling our own timer, just utilize the blk mq req timeout and do the
disconnect if any of our commands timeout.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Josef Bacik [Thu, 8 Sep 2016 19:33:39 +0000 (12:33 -0700)]
nbd: use flags instead of bool
In preparation for some future changes, change a few of the state bools over to
normal bits to set/clear properly.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Josef Bacik [Thu, 8 Sep 2016 19:33:38 +0000 (12:33 -0700)]
nbd: don't shutdown sock with irq's disabled
We hit a warning when shutting down the nbd connection because we have irq's
disabled. We don't really need to do the shutdown under the lock, just clear
the nbd->sock. So do the shutdown outside of the irq. This gets rid of the
warning.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Josef Bacik [Thu, 8 Sep 2016 19:33:37 +0000 (12:33 -0700)]
nbd: convert to blkmq
This moves NBD over to using blkmq, which allows us to get rid of the NBD
wide queue lock and the async submit kthread. We will start with 1 hw
queue for now, but I plan to add multiple tcp connection support in the
future and we'll fix how we set the hwqueue's.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Linus Torvalds [Thu, 8 Sep 2016 19:23:13 +0000 (12:23 -0700)]
Merge tag 'ceph-for-4.8-rc6' of git://github.com/ceph/ceph-client
Pull ceph fix from Ilya Dryomov:
"A fix for a 4.7 performance regression, caused by a typo in an if
condition"
* tag 'ceph-for-4.8-rc6' of git://github.com/ceph/ceph-client:
ceph: do not modify fi->frag in need_reset_readdir()
Linus Torvalds [Thu, 8 Sep 2016 19:19:24 +0000 (12:19 -0700)]
Merge branch 'dmi-for-linus' of git://git./linux/kernel/git/jdelvare/staging
Pull dmi fix from Jean Delvare.
* 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
dmi-id: don't free dev structure after calling device_register
Linus Torvalds [Thu, 8 Sep 2016 19:05:15 +0000 (12:05 -0700)]
Merge tag 'armsoc-fixes' of git://git./linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"This is a slightly larger batch of fixes that we've been sitting on a
few -rcs. Most of them are simple oneliners, but there are two sets
that are slightly larger and worth pointing out:
- A set of patches to OMAP to deal with hwmod for RTC on am33xx
(beaglebone SoC, among others). It's the only clock that ever has
a valid offset of 0, so a new flag needed introduction once this
problem was discovered.
- A collection of CCI fixes for performance counters discovered once
people started using it on X-Gene CPUs"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (37 commits)
arm-cci: pmu: Fix typo in event name
Revert "ARM: tegra: fix erroneous address in dts"
ARM: dts: imx6qdl: Fix SPDIF regression
ARM: imx6: add missing BM_CLPCR_BYPASS_PMIC_READY setting for imx6sx
ARM: dts: imx7d-sdb: fix ti,x-plate-ohms property name
ARM: dts: kirkwood: Fix PCIe label on OpenRD
ARM: kirkwood: ib62x0: fix size of u-boot environment partition
bus: arm-ccn: make event groups reliable
bus: arm-ccn: fix hrtimer registration
bus: arm-ccn: fix PMU interrupt flags
ARM: tegra: Correct polarity for Tegra114 PMIC interrupt
MAINTAINERS: add tree entry for ARM/UniPhier architecture
ARM: sun5i: Fix typo in trip point temperature
MAINTAINERS: Switch to kernel.org account for Krzysztof Kozlowski
ARM: imx6ul: populates platform device at .init_machine
bus: arm-ccn: Add missing event attribute exclusions for host/guest
bus: arm-ccn: Correct required arguments for XP PMU events
bus: arm-ccn: Fix XP watchpoint settings bitmask
bus: arm-ccn: Do not attempt to configure XPs for cycle counter
bus: arm-ccn: Fix PMU handling of MN
...
Wolfram Sang [Thu, 25 Aug 2016 17:27:40 +0000 (19:27 +0200)]
Documentation: i2c: slave-interface: add note for driver development
Make it clear that adding slave support shall not disable master
functionality. We can have both, so we should.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Wolfram Sang [Tue, 23 Aug 2016 15:28:03 +0000 (17:28 +0200)]
i2c: mux: demux-pinctrl: run properly with multiple instances
We can't use a static property for all the changesets, so we now create
dynamic ones for each changeset.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Fixes:
50a5ba87690814 ("i2c: mux: demux-pinctrl: add driver")
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Takashi Iwai [Tue, 30 Aug 2016 12:45:46 +0000 (14:45 +0200)]
ALSA: rawmidi: Fix possible deadlock with virmidi registration
When a seq-virmidi driver is initialized, it registers a rawmidi
instance with its callback to create an associated seq kernel client.
Currently it's done throughly in rawmidi's register_mutex context.
Recently it was found that this may lead to a deadlock another rawmidi
device that is being attached with the sequencer is accessed, as both
open with the same register_mutex. This was actually triggered by
syzkaller, as Dmitry Vyukov reported:
======================================================
[ INFO: possible circular locking dependency detected ]
4.8.0-rc1+ #11 Not tainted
-------------------------------------------------------
syz-executor/7154 is trying to acquire lock:
(register_mutex#5){+.+.+.}, at: [<
ffffffff84fd6d4b>] snd_rawmidi_kernel_open+0x4b/0x260 sound/core/rawmidi.c:341
but task is already holding lock:
(&grp->list_mutex){++++.+}, at: [<
ffffffff850138bb>] check_and_subscribe_port+0x5b/0x5c0 sound/core/seq/seq_ports.c:495
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&grp->list_mutex){++++.+}:
[<
ffffffff8147a3a8>] lock_acquire+0x208/0x430 kernel/locking/lockdep.c:3746
[<
ffffffff863f6199>] down_read+0x49/0xc0 kernel/locking/rwsem.c:22
[< inline >] deliver_to_subscribers sound/core/seq/seq_clientmgr.c:681
[<
ffffffff85005c5e>] snd_seq_deliver_event+0x35e/0x890 sound/core/seq/seq_clientmgr.c:822
[<
ffffffff85006e96>] > snd_seq_kernel_client_dispatch+0x126/0x170 sound/core/seq/seq_clientmgr.c:2418
[<
ffffffff85012c52>] snd_seq_system_broadcast+0xb2/0xf0 sound/core/seq/seq_system.c:101
[<
ffffffff84fff70a>] snd_seq_create_kernel_client+0x24a/0x330 sound/core/seq/seq_clientmgr.c:2297
[< inline >] snd_virmidi_dev_attach_seq sound/core/seq/seq_virmidi.c:383
[<
ffffffff8502d29f>] snd_virmidi_dev_register+0x29f/0x750 sound/core/seq/seq_virmidi.c:450
[<
ffffffff84fd208c>] snd_rawmidi_dev_register+0x30c/0xd40 sound/core/rawmidi.c:1645
[<
ffffffff84f816d3>] __snd_device_register.part.0+0x63/0xc0 sound/core/device.c:164
[< inline >] __snd_device_register sound/core/device.c:162
[<
ffffffff84f8235d>] snd_device_register_all+0xad/0x110 sound/core/device.c:212
[<
ffffffff84f7546f>] snd_card_register+0xef/0x6c0 sound/core/init.c:749
[<
ffffffff85040b7f>] snd_virmidi_probe+0x3ef/0x590 sound/drivers/virmidi.c:123
[<
ffffffff833ebf7b>] platform_drv_probe+0x8b/0x170 drivers/base/platform.c:564
......
-> #0 (register_mutex#5){+.+.+.}:
[< inline >] check_prev_add kernel/locking/lockdep.c:1829
[< inline >] check_prevs_add kernel/locking/lockdep.c:1939
[< inline >] validate_chain kernel/locking/lockdep.c:2266
[<
ffffffff814791f4>] __lock_acquire+0x4d44/0x4d80 kernel/locking/lockdep.c:3335
[<
ffffffff8147a3a8>] lock_acquire+0x208/0x430 kernel/locking/lockdep.c:3746
[< inline >] __mutex_lock_common kernel/locking/mutex.c:521
[<
ffffffff863f0ef1>] mutex_lock_nested+0xb1/0xa20 kernel/locking/mutex.c:621
[<
ffffffff84fd6d4b>] snd_rawmidi_kernel_open+0x4b/0x260 sound/core/rawmidi.c:341
[<
ffffffff8502e7c7>] midisynth_subscribe+0xf7/0x350 sound/core/seq/seq_midi.c:188
[< inline >] subscribe_port sound/core/seq/seq_ports.c:427
[<
ffffffff85013cc7>] check_and_subscribe_port+0x467/0x5c0 sound/core/seq/seq_ports.c:510
[<
ffffffff85015da9>] snd_seq_port_connect+0x2c9/0x500 sound/core/seq/seq_ports.c:579
[<
ffffffff850079b8>] snd_seq_ioctl_subscribe_port+0x1d8/0x2b0 sound/core/seq/seq_clientmgr.c:1480
[<
ffffffff84ffe9e4>] snd_seq_do_ioctl+0x184/0x1e0 sound/core/seq/seq_clientmgr.c:2225
[<
ffffffff84ffeae8>] snd_seq_kernel_client_ctl+0xa8/0x110 sound/core/seq/seq_clientmgr.c:2440
[<
ffffffff85027664>] snd_seq_oss_midi_open+0x3b4/0x610 sound/core/seq/oss/seq_oss_midi.c:375
[<
ffffffff85023d67>] snd_seq_oss_synth_setup_midi+0x107/0x4c0 sound/core/seq/oss/seq_oss_synth.c:281
[<
ffffffff8501b0a8>] snd_seq_oss_open+0x748/0x8d0 sound/core/seq/oss/seq_oss_init.c:274
[<
ffffffff85019d8a>] odev_open+0x6a/0x90 sound/core/seq/oss/seq_oss.c:138
[<
ffffffff84f7040f>] soundcore_open+0x30f/0x640 sound/sound_core.c:639
......
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&grp->list_mutex);
lock(register_mutex#5);
lock(&grp->list_mutex);
lock(register_mutex#5);
*** DEADLOCK ***
======================================================
The fix is to simply move the registration parts in
snd_rawmidi_dev_register() to the outside of the register_mutex lock.
The lock is needed only to manage the linked list, and it's not
necessarily to cover the whole initialization process.
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Takashi Iwai [Wed, 7 Sep 2016 13:45:31 +0000 (15:45 +0200)]
ALSA: timer: Fix zero-division by continue of uninitialized instance
When a user timer instance is continued without the explicit start
beforehand, the system gets eventually zero-division error like:
divide error: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN
CPU: 1 PID: 27320 Comm: syz-executor Not tainted 4.8.0-rc3-next-
20160825+ #8
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
task:
ffff88003c9b2280 task.stack:
ffff880027280000
RIP: 0010:[<
ffffffff858e1a6c>] [< inline >] ktime_divns include/linux/ktime.h:195
RIP: 0010:[<
ffffffff858e1a6c>] [<
ffffffff858e1a6c>] snd_hrtimer_callback+0x1bc/0x3c0 sound/core/hrtimer.c:62
Call Trace:
<IRQ>
[< inline >] __run_hrtimer kernel/time/hrtimer.c:1238
[<
ffffffff81504335>] __hrtimer_run_queues+0x325/0xe70 kernel/time/hrtimer.c:1302
[<
ffffffff81506ceb>] hrtimer_interrupt+0x18b/0x420 kernel/time/hrtimer.c:1336
[<
ffffffff8126d8df>] local_apic_timer_interrupt+0x6f/0xe0 arch/x86/kernel/apic/apic.c:933
[<
ffffffff86e13056>] smp_apic_timer_interrupt+0x76/0xa0 arch/x86/kernel/apic/apic.c:957
[<
ffffffff86e1210c>] apic_timer_interrupt+0x8c/0xa0 arch/x86/entry/entry_64.S:487
<EOI>
.....
Although a similar issue was spotted and a fix patch was merged in
commit [
6b760bb2c63a: ALSA: timer: fix division by zero after
SNDRV_TIMER_IOCTL_CONTINUE], it seems covering only a part of
iceberg.
In this patch, we fix the issue a bit more drastically. Basically the
continue of an uninitialized timer is supposed to be a fresh start, so
we do it for user timers. For the direct snd_timer_continue() call,
there is no way to pass the initial tick value, so we kick out for the
uninitialized case.
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Allen Hung [Fri, 15 Jul 2016 09:42:22 +0000 (17:42 +0800)]
dmi-id: don't free dev structure after calling device_register
dmi_dev is freed in error exit code but, according to the document
of device_register, it should never directly free device structure
after calling this function, even if it returned an error! Use
put_device() instead.
Signed-off-by: Allen Hung <allen_hung@dell.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Mathias Nyman [Wed, 7 Sep 2016 14:26:33 +0000 (17:26 +0300)]
xhci: fix null pointer dereference in stop command timeout function
The stop endpoint command has its own 5 second timeout timer.
If the timeout function is triggered between USB3 and USB2 host
removal it will try to call usb_hc_died(xhci_to_hcd(xhci)->primary_hcd)
the ->primary_hcd will be set to NULL at USB3 hcd removal.
Fix this by first checking if the PCI host is being removed, and
also by using only xhci_to_hcd() as it will always return the primary
hcd.
CC: <stable@vger.kernel.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linus Torvalds [Thu, 8 Sep 2016 04:28:26 +0000 (21:28 -0700)]
Merge branch 'for-rc' of git://git./linux/kernel/git/rzhang/linux
Pull thermal fix from Zhang Rui:
"Only one patch this time, which fixes a crash in rcar_thermal driver.
From Dirk Behme"
* 'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
thermal: rcar_thermal: Fix priv->zone error handling
Olof Johansson [Thu, 8 Sep 2016 04:25:08 +0000 (21:25 -0700)]
Merge tag 'sunxi-fixes-for-4.8' of https://git./linux/kernel/git/mripard/linux into fixes
Allwinner fixes for 4.8
A single patch fixing a typo in the temperature trip points in the A13
DTSI.
* tag 'sunxi-fixes-for-4.8' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
ARM: sun5i: Fix typo in trip point temperature
Signed-off-by: Olof Johansson <olof@lixom.net>
Suzuki K Poulose [Mon, 5 Sep 2016 15:27:53 +0000 (16:27 +0100)]
arm-cci: pmu: Fix typo in event name
For one of the CCI events exposed under sysfs, "snoop" was typo'd as
"snopp". Correct this such that users see the expected event name when
enumerating events via sysfs.
Cc: arm@kernel.org
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Olof Johansson [Thu, 8 Sep 2016 04:24:22 +0000 (21:24 -0700)]
Merge tag 'imx-fixes-4.8-2' of git://git./linux/kernel/git/shawnguo/linux into fixes
i.MX fixes for 4.8, 2nd round:
- Fix misspelled "ti,x-plate-ohms" property name of touchscreen
controller for imx7d-sdb DTS.
- Add missing BM_CLPCR_BYPASS_PMIC_READY setting for i.MX6SX to get
suspend/resume work properly.
- Fix SPDIF regression on imx6qdl which caused by a clock update on
spdif device node.
* tag 'imx-fixes-4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: dts: imx6qdl: Fix SPDIF regression
ARM: imx6: add missing BM_CLPCR_BYPASS_PMIC_READY setting for imx6sx
ARM: dts: imx7d-sdb: fix ti,x-plate-ohms property name
Signed-off-by: Olof Johansson <olof@lixom.net>
Olof Johansson [Thu, 8 Sep 2016 04:16:40 +0000 (21:16 -0700)]
Revert "ARM: tegra: fix erroneous address in dts"
This reverts commit
b5c86b7496d74f6e454bcab5166efa023e1f0459.
This is no longer needed due to other changes going into 4.8 to rename
the unit addresses on a large number of device nodes. So it was picked up
for v4.8-rc1 in error.
Reported-by: Ralf Ramsauer <ralf@ramses-pyramidenbau.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
Paul Mackerras [Fri, 2 Sep 2016 11:47:59 +0000 (21:47 +1000)]
powerpc/mm: Don't alias user region to other regions below PAGE_OFFSET
In commit
c60ac5693c47 ("powerpc: Update kernel VSID range", 2013-03-13)
we lost a check on the region number (the top four bits of the effective
address) for addresses below PAGE_OFFSET. That commit replaced a check
that the top 18 bits were all zero with a check that bits 46 - 59 were
zero (performed for all addresses, not just user addresses).
This means that userspace can access an address like 0x1000_0xxx_xxxx_xxxx
and we will insert a valid SLB entry for it. The VSID used will be the
same as if the top 4 bits were 0, but the page size will be some random
value obtained by indexing beyond the end of the mm_ctx_high_slices_psize
array in the paca. If that page size is the same as would be used for
region 0, then userspace just has an alias of the region 0 space. If the
page size is different, then no HPTE will be found for the access, and
the process will get a SIGSEGV (since hash_page_mm() will refuse to create
a HPTE for the bogus address).
The access beyond the end of the mm_ctx_high_slices_psize can be at most
5.5MB past the array, and so will be in RAM somewhere. Since the access
is a load performed in real mode, it won't fault or crash the kernel.
At most this bug could perhaps leak a little bit of information about
blocks of 32 bytes of memory located at offsets of i * 512kB past the
paca->mm_ctx_high_slices_psize array, for 1 <= i <= 11.
Fixes:
c60ac5693c47 ("powerpc: Update kernel VSID range")
Cc: stable@vger.kernel.org # v3.9+
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Christophe Leroy [Fri, 26 Aug 2016 14:45:13 +0000 (16:45 +0200)]
powerpc/32: Fix again csum_partial_copy_generic()
Commit
7aef4136566b0 ("powerpc32: rewrite csum_partial_copy_generic()
based on copy_tofrom_user()") introduced a bug when destination address
is odd and len is lower than cacheline size.
In that case the resulting csum value doesn't have to be rotated one
byte because the cache-aligned copy part is skipped so no alignment
is performed.
Fixes:
7aef4136566b0 ("powerpc32: rewrite csum_partial_copy_generic() based on copy_tofrom_user()")
Cc: stable@vger.kernel.org # v4.6+
Reported-by: Alessio Igor Bogani <alessio.bogani@elettra.eu>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Tested-by: Alessio Igor Bogani <alessio.bogani@elettra.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Gavin Shan [Tue, 6 Sep 2016 04:17:18 +0000 (14:17 +1000)]
powerpc/powernv: Fix corrupted PE allocation bitmap on releasing PE
In pnv_ioda_free_pe(), the PE object (including the associated PE
number) is cleared before resetting the corresponding bit in the
PE allocation bitmap. It means PE#0 is always released to the bitmap
wrongly.
This fixes above issue by caching the PE number before the PE object
is cleared.
Fixes:
1e9167726c41 ("powerpc/powernv: Use PE instead of number during setup and release"
Cc: stable@vger.kernel.org # v4.7+
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Russell King [Mon, 29 Aug 2016 10:24:10 +0000 (11:24 +0100)]
gpio: sa1100: fix irq probing for ucb1x00
ucb1x00 has used IRQ probing since it's dawn to find the GPIO interrupt
that it's connected to. However, commit
23393d49fb75 ("gpio: kill off
set_irq_flags usage") broke this by disabling IRQ probing on GPIO
interrupts. Fix this.
Fixes:
23393d49fb75 ("gpio: kill off set_irq_flags usage")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Linus Walleij [Wed, 7 Sep 2016 21:13:20 +0000 (23:13 +0200)]
gpio: mcp23s08: make driver depend on OF_GPIO
The MCP23S08 driver certainly accesses fields inside the
struct gpio_chip that are only available under CONFIG_OF_GPIO
not just CONFIG_OF, so update the Kconfig and driver to reflect
this.
Cc: Alexander Stein <alexander.stein@systec-electronic.com>
Cc: Phil Reid <preid@electromag.com.au>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Linus Walleij [Wed, 24 Aug 2016 11:51:33 +0000 (13:51 +0200)]
Revert "gpio: include <linux/io-mapping.h> in gpiolib-of"
This reverts commit
7d4defe21c682c934a19fce1ba8b54b7bde61b08.
The commit was pointless, manically trembling in the dark for
a solution. The real fixes are:
commit
048c28c91e56
("gpio: make any OF dependent driver depend on OF_GPIO")
commit
2527ecc9195e
("gpio: Fix OF build problem on UM")
Reported-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Linus Torvalds [Wed, 7 Sep 2016 21:03:49 +0000 (14:03 -0700)]
Merge tag 'usercopy-v4.8-rc6-part2' of git://git./linux/kernel/git/kees/linux
Pull more hardened usercopyfixes from Kees Cook:
- force check_object_size() to be inline too
- move page-spanning check behind a CONFIG since it's triggering false
positives
[ Changed the page-spanning config option to depend on EXPERT in the
merge. That way it still gets build testing, and you can enable it if
you want to, but is never enabled for "normal" configurations ]
* tag 'usercopy-v4.8-rc6-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
usercopy: remove page-spanning test for now
usercopy: force check_object_size() inline
Chris Mason [Wed, 7 Sep 2016 19:55:36 +0000 (12:55 -0700)]
Merge branch 'for-chris' of git://git./linux/kernel/git/kdave/linux into for-linus-4.8
Kees Cook [Wed, 7 Sep 2016 16:54:34 +0000 (09:54 -0700)]
usercopy: remove page-spanning test for now
A custom allocator without __GFP_COMP that copies to userspace has been
found in vmw_execbuf_process[1], so this disables the page-span checker
by placing it behind a CONFIG for future work where such things can be
tracked down later.
[1] https://bugzilla.redhat.com/show_bug.cgi?id=
1373326
Reported-by: Vinson Lee <vlee@freedesktop.org>
Fixes:
f5509cc18daa ("mm: Hardened usercopy")
Signed-off-by: Kees Cook <keescook@chromium.org>
Kees Cook [Wed, 7 Sep 2016 16:39:32 +0000 (09:39 -0700)]
usercopy: force check_object_size() inline
Just for good measure, make sure that check_object_size() is always
inlined too, as already done for copy_*_user() and __copy_*_user().
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Linus Torvalds [Wed, 7 Sep 2016 17:46:06 +0000 (10:46 -0700)]
Merge tag 'seccomp-v4.8-rc6' of git://git./linux/kernel/git/kees/linux
Pull seccomp fixes from Kees Cook:
"Fix UM seccomp vs ptrace, after reordering landed"
* tag 'seccomp-v4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
seccomp: Remove 2-phase API documentation
um/ptrace: Fix the syscall number update after a ptrace
um/ptrace: Fix the syscall_trace_leave call
Linus Torvalds [Wed, 7 Sep 2016 16:29:36 +0000 (09:29 -0700)]
Merge tag 'usercopy-v4.8-rc6' of git://git./linux/kernel/git/kees/linux
Pull hardened usercopy fixes from Kees Cook:
- inline copy_*_user() for correct use of __builtin_const_p() for
hardened usercopy and the recent compile-time checks.
- switch hardened usercopy to only check non-const size arguments to
avoid meaningless checks on likely-sane const values.
- update lkdtm usercopy tests to compenstate for the const checking.
* tag 'usercopy-v4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
lkdtm: adjust usercopy tests to bypass const checks
usercopy: fold builtin_const check into inline function
x86/uaccess: force copy_*_user() to be inlined
Mickaël Salaün [Mon, 1 Aug 2016 21:01:57 +0000 (23:01 +0200)]
seccomp: Remove 2-phase API documentation
Fixes:
8112c4f140fa ("seccomp: remove 2-phase API")
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: James Morris <jmorris@namei.org>
Signed-off-by: James Morris <james.l.morris@oracle.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Mickaël Salaün [Mon, 1 Aug 2016 21:01:56 +0000 (23:01 +0200)]
um/ptrace: Fix the syscall number update after a ptrace
Update the syscall number after each PTRACE_SETREGS on ORIG_*AX.
This is needed to get the potentially altered syscall number in the
seccomp filters after RET_TRACE.
This fix four seccomp_bpf tests:
> [ RUN ] TRACE_syscall.skip_after_RET_TRACE
> seccomp_bpf.c:1560:TRACE_syscall.skip_after_RET_TRACE:Expected -1 (
18446744073709551615) == syscall(39) (26)
> seccomp_bpf.c:1561:TRACE_syscall.skip_after_RET_TRACE:Expected 1 (1) == (*__errno_location ()) (22)
> [ FAIL ] TRACE_syscall.skip_after_RET_TRACE
> [ RUN ] TRACE_syscall.kill_after_RET_TRACE
> TRACE_syscall.kill_after_RET_TRACE: Test exited normally instead of by signal (code: 1)
> [ FAIL ] TRACE_syscall.kill_after_RET_TRACE
> [ RUN ] TRACE_syscall.skip_after_ptrace
> seccomp_bpf.c:1622:TRACE_syscall.skip_after_ptrace:Expected -1 (
18446744073709551615) == syscall(39) (26)
> seccomp_bpf.c:1623:TRACE_syscall.skip_after_ptrace:Expected 1 (1) == (*__errno_location ()) (22)
> [ FAIL ] TRACE_syscall.skip_after_ptrace
> [ RUN ] TRACE_syscall.kill_after_ptrace
> TRACE_syscall.kill_after_ptrace: Test exited normally instead of by signal (code: 1)
> [ FAIL ] TRACE_syscall.kill_after_ptrace
Fixes:
26703c636c1f ("um/ptrace: run seccomp after ptrace")
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: James Morris <jmorris@namei.org>
Cc: user-mode-linux-devel@lists.sourceforge.net
Signed-off-by: James Morris <james.l.morris@oracle.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Mickaël Salaün [Mon, 1 Aug 2016 21:01:55 +0000 (23:01 +0200)]
um/ptrace: Fix the syscall_trace_leave call
Keep the same semantic as before the commit
26703c636c1f: deallocate
audit context and fake a proper syscall exit.
This fix a kernel panic triggered by the seccomp_bpf test:
> [ RUN ] global.ERRNO_valid
> BUG: failure at kernel/auditsc.c:1504/__audit_syscall_entry()!
> Kernel panic - not syncing: BUG!
Fixes:
26703c636c1f ("um/ptrace: run seccomp after ptrace")
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: James Morris <jmorris@namei.org>
Cc: user-mode-linux-devel@lists.sourceforge.net
Signed-off-by: James Morris <james.l.morris@oracle.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Felipe Balbi [Wed, 7 Sep 2016 10:39:37 +0000 (13:39 +0300)]
usb: dwc3: pci: fix build warning on !PM_SLEEP
When building a kernel with CONFIG_PM_SLEEP=n, we
get the following warning:
drivers/usb/dwc3/dwc3-pci.c:253:12: warning: 'dwc3_pci_pm_dummy' defined but not used
In order to fix this, we should only define
dwc3_pci_pm_dummy() when CONFIG_PM_SLEEP is defined.
Fixes:
f6c274e11e3b ("usb: dwc3: pci: runtime_resume child device")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Linus Torvalds [Tue, 6 Sep 2016 19:33:12 +0000 (12:33 -0700)]
Merge tag 'for-linus' of git://git./linux/kernel/git/dledford/rdma
Pull rdma fixes from Doug Ledford:
"This is the second pull request for the rdma subsystem. Most of the
patches are small and obvious. I took two patches in that are larger
than I wanted this late in the cycle.
The first is the hfi1 patch that implements a work queue to test the
QSFP read state. I originally rejected the first patch for this
(which would have place up to 20 seconds worth of udelays in their
probe routine). They then rewrote it the way I wanted (use delayed
work tasks to wait asynchronously up to 20 seconds for the QSFP to
come alive), so I can't really complain about the size of getting what
I asked for :-/.
The second is large because it switches the rcu locking in the debugfs
code. Since a locking change like this is done all at once, the size
it what it is. It resolves a litany of debug messages from the
kernel, so I pulled it in for -rc.
The rest are all typical -rc worthy patches I think.
There will still be a third -rc pull request from the rdma subsystem
this release. I hope to have that one ready to go by the end of this
week or early next.
Summary:
- a smattering of small fixes across the core, ipoib, i40iw, isert,
cxgb4, and mlx4
- a slightly larger group of fixes to each of mlx5 and hfi1"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
IB/hfi1: Rework debugfs to use SRCU
IB/hfi1: Make n_krcvqs be an unsigned long integer
IB/hfi1: Add QSFP sanity pre-check
IB/hfi1: Fix AHG KDETH Intr shift
IB/hfi1: Fix SGE length for misaligned PIO copy
IB/mlx5: Don't return errors from poll_cq
IB/mlx5: Use TIR number based on selector
IB/mlx5: Simplify code by removing return variable
IB/mlx5: Return EINVAL when caller specifies too many SGEs
IB/mlx4: Don't return errors from poll_cq
Revert "IB/mlx4: Return EAGAIN for any error in mlx4_ib_poll_one"
IB/ipoib: Fix memory corruption in ipoib cm mode connect flow
IB/core: Fix use after free in send_leave function
IB/cxgb4: Make _free_qp static to silence build warning
IB/isert: Properly release resources on DEVICE_REMOVAL
IB/hfi1: Fix the size parameter to find_first_bit
IB/mlx5: Fix the size parameter to find_first_bit
IB/hfi1: Clean up type used and casting
i40iw: Receive notification events correctly
i40iw: Update hw_iwarp_state
Kees Cook [Tue, 6 Sep 2016 18:26:12 +0000 (11:26 -0700)]
lkdtm: adjust usercopy tests to bypass const checks
The hardened usercopy is now consistently avoiding checks against const
sizes, since we really only want to perform runtime bounds checking
on lengths that weren't known at build time. To test the hardened usercopy
code, we must force the length arguments to be seen as non-const.
Signed-off-by: Kees Cook <keescook@chromium.org>
Kees Cook [Wed, 31 Aug 2016 23:04:21 +0000 (16:04 -0700)]
usercopy: fold builtin_const check into inline function
Instead of having each caller of check_object_size() need to remember to
check for a const size parameter, move the check into check_object_size()
itself. This actually matches the original implementation in PaX, though
this commit cleans up the now-redundant builtin_const() calls in the
various architectures.
Signed-off-by: Kees Cook <keescook@chromium.org>
Kees Cook [Tue, 6 Sep 2016 18:56:01 +0000 (11:56 -0700)]
x86/uaccess: force copy_*_user() to be inlined
As already done with __copy_*_user(), mark copy_*_user() as __always_inline.
Without this, the checks for things like __builtin_const_p() won't work
consistently in either hardened usercopy nor the recent adjustments for
detecting usercopy overflows at compile time.
The change in kernel text size is detectable, but very small:
text data bss dec hex filename
12118735 5768608 14229504 32116847 1ea106f vmlinux.before
12120207 5768608 14229504 32118319 1ea162f vmlinux.after
Signed-off-by: Kees Cook <keescook@chromium.org>
Linus Torvalds [Tue, 6 Sep 2016 18:15:07 +0000 (11:15 -0700)]
Merge branch 'mailbox-devel' of git://git.linaro.org/landing-teams/working/fujitsu/integration
Pull mailbox fixes from Jassi Brar:
"Misc fixes for BCM mailbox driver
- Fix build warnings by making static functions used within the file.
- Check for potential NULL before dereferencing
- Fix link error by defining HAS_DMA dependency"
* 'mailbox-devel' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
fix:mailbox:bcm-pdc-mailbox:mark symbols static where possible
mailbox: bcm-pdc: potential NULL dereference in pdc_shutdown()
mailbox: Add HAS_DMA Kconfig dependency to BCM_PDC_MBOX
Linus Torvalds [Tue, 6 Sep 2016 18:06:52 +0000 (11:06 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is really three fixes, but the SES one comes in a bundle of three
(making the replacement API available properly, using it and removing
the non-working one). The SES problem causes an oops on hpsa devices
because they attach virtual disks to the host which aren't SAS
attached (the replacement API ignores them).
The other two fixes are fairly minor: the sense key one means we
actually resolve a newly added sense key and the RDAC device
blacklisting is needed to prevent us annoying the universal XPORT lun
of various RDAC arrays"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: sas: remove is_sas_attached()
scsi: ses: use scsi_is_sas_rphy instead of is_sas_attached
scsi: sas: provide stub implementation for scsi_is_sas_rphy
scsi: blacklist all RDAC devices for BLIST_NO_ULD_ATTACH
scsi: fix upper bounds check of sense key in scsi_sense_key_string()
Linus Torvalds [Tue, 6 Sep 2016 18:02:36 +0000 (11:02 -0700)]
Merge tag 'regmap-fix-v4.8-rc5' of git://git./linux/kernel/git/broonie/regmap
Pull regmap fixes from Mark Brown:
"Several fixes here, the main one being the change from Lars-Peter
which I'd been letting soak in -next since the merge window in case it
uncovered further issues as it's a minimal fix rather than a change
addressing the root cause of the problems (which would've been too
invasive for -rc):
- The biggest change is a fix from Lars-Peter to ensure that we don't
create overlapping rbtree nodes which in turn avoids returning
corrupt cache values to users, fixing some issues that were exposed
by some recent optimisations with certain access patterns but had
been present for a long time.
- A fix from Elaine Zhang to stop us updating the cache if we get an
I/O error when writing to the hardware.
- A fix fromm Maarten ter Huurne to avoid uninitialized defaults in
cases where we have non-readable registers but are initializing the
cache by reading from the device"
* tag 'regmap-fix-v4.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: drop cache if the bus transfer error
regmap: rbtree: Avoid overlapping nodes
regmap: cache: Fix num_reg_defaults computation from reg_defaults_raw
Linus Torvalds [Tue, 6 Sep 2016 17:59:44 +0000 (10:59 -0700)]
Merge tag 'spi-fix-v4.8-rc5' of git://git./linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"As well as the usual driver fixes there's a couple of non-trivial core
fixes in here:
- Fixes for issues reported by Julia Lawall in the changes that were
sent last time to fix interaction between the bus lock and the
locking done for the SPI thread. I'd let this one cook for a while
to make sure nothing else came up in testing.
- A fix from Sien Wu for arithmetic overflows when calculating the
timeout for larger transfers (espcially common with slow buses with
flashes on them)"
* tag 'spi-fix-v4.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: Prevent unexpected SPI time out due to arithmetic overflow
spi: pxa2xx-pci: fix ACPI-based enumeration of SPI devices
MAINTAINERS: add myself as Samsung SPI maintainer
spi: Drop io_mutex in error paths
spi: sh-msiof: Avoid invalid clock generator parameters
spi: img-spfi: Remove spi_master_put in img_spfi_remove()
spi: mediatek: remove spi_master_put in mtk_spi_remove()
spi: qup: Remove spi_master_put in spi_qup_remove()
Linus Torvalds [Tue, 6 Sep 2016 17:43:54 +0000 (10:43 -0700)]
Merge tag 'regulator-fix-v4.8-rc5' of git://git./linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"Two things here, one an e-mail update for Krzysztof Kozlowski and the
other a couple of fixes for issues with incorrectly described voltages
in a couple of the Qualcomm regulator drivers that were breaking MMC
on some platforms"
* tag 'regulator-fix-v4.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: Change Krzysztof Kozlowski's email to kernel.org
regulator: qcom_smd: Fix voltage ranges for pma8084 ftsmps and pldo
regulator: qcom_smd: Fix voltage ranges for pm8x41
Linus Torvalds [Tue, 6 Sep 2016 17:36:12 +0000 (10:36 -0700)]
Merge tag 'pinctrl-v4.8-3' of git://git./linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"Nothing special at all, just three SoC-specific driver fixes:
- Fix routing problems in pistachio (Imagination) and sunxi
(AllWinner)
- Fix an interrupt problem in the Cherryview (Intel)"
* tag 'pinctrl-v4.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: sunxi: fix uart1 CTS/RTS pins at PG on A23/A33
pinctrl: cherryview: Do not mask all interrupts in probe
pinctrl: pistachio: fix mfio pll_lock pinmux