platform/kernel/linux-rpi.git
6 years agoloop: Split setting of lo_state from loop_clr_fd
Jan Kara [Thu, 8 Nov 2018 13:01:06 +0000 (14:01 +0100)]
loop: Split setting of lo_state from loop_clr_fd

Move setting of lo_state to Lo_rundown out into the callers. That will
allow us to unlock loop_ctl_mutex while the loop device is protected
from other changes by its special state.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoloop: Push lo_ctl_mutex down into individual ioctls
Jan Kara [Thu, 8 Nov 2018 13:01:05 +0000 (14:01 +0100)]
loop: Push lo_ctl_mutex down into individual ioctls

Push acquisition of lo_ctl_mutex down into individual ioctl handling
branches. This is a preparatory step for pushing the lock down into
individual ioctl handling functions so that they can release the lock as
they need it. We also factor out some simple ioctl handlers that will
not need any special handling to reduce unnecessary code duplication.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoloop: Get rid of loop_index_mutex
Jan Kara [Thu, 8 Nov 2018 13:01:04 +0000 (14:01 +0100)]
loop: Get rid of loop_index_mutex

Now that loop_ctl_mutex is global, just get rid of loop_index_mutex as
there is no good reason to keep these two separate and it just
complicates the locking.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoloop: Fold __loop_release into loop_release
Jan Kara [Thu, 8 Nov 2018 13:01:03 +0000 (14:01 +0100)]
loop: Fold __loop_release into loop_release

__loop_release() has a single call site. Fold it there. This is
currently not a huge win but it will make following replacement of
loop_index_mutex more obvious.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblock/loop: Use global lock for ioctl() operation.
Tetsuo Handa [Thu, 8 Nov 2018 13:01:02 +0000 (14:01 +0100)]
block/loop: Use global lock for ioctl() operation.

syzbot is reporting NULL pointer dereference [1] which is caused by
race condition between ioctl(loop_fd, LOOP_CLR_FD, 0) versus
ioctl(other_loop_fd, LOOP_SET_FD, loop_fd) due to traversing other
loop devices at loop_validate_file() without holding corresponding
lo->lo_ctl_mutex locks.

Since ioctl() request on loop devices is not frequent operation, we don't
need fine grained locking. Let's use global lock in order to allow safe
traversal at loop_validate_file().

Note that syzbot is also reporting circular locking dependency between
bdev->bd_mutex and lo->lo_ctl_mutex [2] which is caused by calling
blkdev_reread_part() with lock held. This patch does not address it.

[1] https://syzkaller.appspot.com/bug?id=f3cfe26e785d85f9ee259f385515291d21bd80a3
[2] https://syzkaller.appspot.com/bug?id=bf154052f0eea4bc7712499e4569505907d15889

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: syzbot <syzbot+bf89c128e05dd6c62523@syzkaller.appspotmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblock/loop: Don't grab "struct file" for vfs_getattr() operation.
Tetsuo Handa [Thu, 8 Nov 2018 13:01:01 +0000 (14:01 +0100)]
block/loop: Don't grab "struct file" for vfs_getattr() operation.

vfs_getattr() needs "struct path" rather than "struct file".
Let's use path_get()/path_put() rather than get_file()/fput().

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoms_block: remove unused pointer 'set'
Colin Ian King [Thu, 8 Nov 2018 11:08:09 +0000 (11:08 +0000)]
ms_block: remove unused pointer 'set'

Pointer 'set' is declared but not used, remove it. Cleans up warning:

warning: unused variable ‘set’ [-Wunused-variable]

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agosunvdc: fix compiler warning
Jens Axboe [Thu, 8 Nov 2018 04:17:57 +0000 (21:17 -0700)]
sunvdc: fix compiler warning

Stephen reports:

After merging the block tree, today's linux-next build (sparc64 defconfig)
produced this warning:

/home/sfr/next/next/drivers/block/sunvdc.c: In function 'init_queue':
/home/sfr/next/next/drivers/block/sunvdc.c:788:6: warning: unused variable 'ret' [-Wunused-variable]
  int ret;
      ^~~

Kill the unused variable.

Fixes: fa182a1fa97d ("sunvdc: convert to blk-mq")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agonvme: add separate poll queue map
Jens Axboe [Mon, 5 Nov 2018 19:44:33 +0000 (12:44 -0700)]
nvme: add separate poll queue map

Adds support for defining a variable number of poll queues, currently
configurable with the 'poll_queues' module parameter. Defaults to
a single poll queue.

And now we finally have poll support without triggering interrupts!

Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblock: add REQ_HIPRI and inherit it from IOCB_HIPRI
Jens Axboe [Wed, 29 Aug 2018 16:36:56 +0000 (10:36 -0600)]
block: add REQ_HIPRI and inherit it from IOCB_HIPRI

We use IOCB_HIPRI to poll for IO in the caller instead of scheduling.
This information is not available for (or after) IO submission. The
driver may make different queue choices based on the type of IO, so
make the fact that we will poll for this IO known to the lower layers
as well.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agonvme: utilize two queue maps, one for reads and one for writes
Jens Axboe [Wed, 31 Oct 2018 14:36:31 +0000 (08:36 -0600)]
nvme: utilize two queue maps, one for reads and one for writes

NVMe does round-robin between queues by default, which means that
sharing a queue map for both reads and writes can be problematic
in terms of read servicing. It's much easier to flood the queue
with writes and reduce the read servicing.

Implement two queue maps, one for reads and one for writes. The
write queue count is configurable through the 'write_queues'
parameter.

By default, we retain the previous behavior of having a single
queue set, shared between reads and writes. Setting 'write_queues'
to a non-zero value will create two queue sets, one for reads and
one for writes, the latter using the configurable number of
queues (hardware queue counts permitting).

Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblk-mq: initial support for multiple queue maps
Jens Axboe [Wed, 24 Oct 2018 19:16:11 +0000 (13:16 -0600)]
blk-mq: initial support for multiple queue maps

Add a queue offset to the tag map. This enables users to map
iteratively, for each queue map type they support.

Bump maximum number of supported maps to 2, we're now fully
able to support more than 1 map.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblk-mq: improve plug list sorting
Jens Axboe [Tue, 30 Oct 2018 18:24:04 +0000 (12:24 -0600)]
blk-mq: improve plug list sorting

Currently we only look at the software queue, but with support
for multiple maps, we should also look at the hardware queue.
This is important since we'll flush out the request list if
either the software queue or hardware queue don't match.

This sorts by software queue first, then hardware queue if
that differs. Finally we sort by request location like before.
This minimizes the flush points per plug list.

Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblk-mq: cleanup and improve list insertion
Jens Axboe [Tue, 30 Oct 2018 17:31:51 +0000 (11:31 -0600)]
blk-mq: cleanup and improve list insertion

It's somewhat strange to have a list insertion function that
relies on the fact that the caller has mapped things correctly.
Pass in the hardware queue directly for insertion, which makes
for a much cleaner interface and implementation.

Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblk-mq: cache request hardware queue mapping
Jens Axboe [Mon, 29 Oct 2018 21:06:13 +0000 (15:06 -0600)]
blk-mq: cache request hardware queue mapping

We call blk_mq_map_queue() a lot, at least two times for each
request per IO, sometimes more. Since we now have an indirect
call as well in that function. cache the mapping so we don't
have to re-call blk_mq_map_queue() for the same request
multiple times.

Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblk-mq: separate number of hardware queues from nr_cpu_ids
Jens Axboe [Mon, 29 Oct 2018 19:25:27 +0000 (13:25 -0600)]
blk-mq: separate number of hardware queues from nr_cpu_ids

With multiple maps, nr_cpu_ids is no longer the maximum number of
hardware queues we support on a given devices. The initializer of
the tag_set can have set ->nr_hw_queues larger than the available
number of CPUs, since we can exceed that with multiple queue maps.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblk-mq: support multiple hctx maps
Jens Axboe [Tue, 30 Oct 2018 16:36:06 +0000 (10:36 -0600)]
blk-mq: support multiple hctx maps

Add support for the tag set carrying multiple queue maps, and
for the driver to inform blk-mq how many it wishes to support
through setting set->nr_maps.

This adds an mq_ops helper for drivers that support more than 1
map, mq_ops->rq_flags_to_type(). The function takes request/bio
flags and CPU, and returns a queue map index for that. We then
use the type information in blk_mq_map_queue() to index the map
set.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblk-mq: add 'type' attribute to the sysfs hctx directory
Jens Axboe [Thu, 25 Oct 2018 14:58:14 +0000 (08:58 -0600)]
blk-mq: add 'type' attribute to the sysfs hctx directory

It can be useful for a user to verify what type a given hardware
queue is, expose this information in sysfs.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblk-mq: allow software queue to map to multiple hardware queues
Jens Axboe [Mon, 29 Oct 2018 19:13:29 +0000 (13:13 -0600)]
blk-mq: allow software queue to map to multiple hardware queues

The mapping used to be dependent on just the CPU location, but
now it's a tuple of (type, cpu) instead. This is a prep patch
for allowing a single software queue to map to multiple hardware
queues. No functional changes in this patch.

This changes the software queue count to an unsigned short
to save a bit of space. We can still support 64K-1 CPUs,
which should be enough. Add a check to catch a wrap.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblk-mq: pass in request/bio flags to queue mapping
Jens Axboe [Mon, 29 Oct 2018 19:11:38 +0000 (13:11 -0600)]
blk-mq: pass in request/bio flags to queue mapping

Prep patch for being able to place request based not just on
CPU location, but also on the type of request.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblk-mq: provide dummy blk_mq_map_queue_type() helper
Jens Axboe [Mon, 29 Oct 2018 19:07:33 +0000 (13:07 -0600)]
blk-mq: provide dummy blk_mq_map_queue_type() helper

Doesn't do anything right now, but it's needed as a prep patch
to get the interfaces right.

While in there, correct the blk_mq_map_queue() CPU type to an unsigned
int.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblk-mq: abstract out queue map
Jens Axboe [Mon, 29 Oct 2018 19:06:14 +0000 (13:06 -0600)]
blk-mq: abstract out queue map

This is in preparation for allowing multiple sets of maps per
queue, if so desired.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblk-mq: kill q->mq_map
Jens Axboe [Tue, 16 Oct 2018 20:23:06 +0000 (14:23 -0600)]
blk-mq: kill q->mq_map

It's just a pointer to set->mq_map, use that instead. Move the
assignment a bit earlier, so we always know it's valid.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoMerge branch 'irq/for-block' of git://git.kernel.org/pub/scm/linux/kernel/git/tip...
Jens Axboe [Wed, 7 Nov 2018 20:43:54 +0000 (13:43 -0700)]
Merge branch 'irq/for-block' of git://git./linux/kernel/git/tip/tip into for-4.21/block

Pull in the irq affinity commits, that are staged through Thomas's
tree.

* 'irq/for-block' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq/affinity: Add support for allocating interrupt sets
  genirq/affinity: Pass first vector to __irq_build_affinity_masks()
  genirq/affinity: Move two stage affinity spreading into a helper function
  genirq/affinity: Spread IRQs to all available NUMA nodes

6 years agoblock: kill request ->cpu member
Jens Axboe [Wed, 31 Oct 2018 23:01:22 +0000 (17:01 -0600)]
block: kill request ->cpu member

This was used for completion placement for the legacy path,
but for mq we have rq->mq_ctx->cpu for that. Add a helper
to get the request CPU assignment, as the mq_ctx type is
private to blk-mq.

Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblock: get rid of q->softirq_done_fn()
Jens Axboe [Wed, 31 Oct 2018 15:43:30 +0000 (09:43 -0600)]
block: get rid of q->softirq_done_fn()

With the legacy path gone, all we do is funnel it through the
mq_ops->complete() operation.

Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblock: get rid of blk_queued_rq()
Jens Axboe [Wed, 24 Oct 2018 16:48:12 +0000 (10:48 -0600)]
block: get rid of blk_queued_rq()

No point in hiding what this does, just open code it in the
one spot where we are still using it.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblk-merge: kill dead queue lock held check
Jens Axboe [Sat, 20 Oct 2018 21:43:37 +0000 (15:43 -0600)]
blk-merge: kill dead queue lock held check

This is dead code, any queue reaching this part has mq_ops
attached.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblock: remove req_no_special_merge() from merging code
Jens Axboe [Fri, 12 Oct 2018 18:39:10 +0000 (12:39 -0600)]
block: remove req_no_special_merge() from merging code

It'll always be false at this point, just remove it.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblock: kill request slab cache
Jens Axboe [Thu, 11 Oct 2018 22:00:52 +0000 (16:00 -0600)]
block: kill request slab cache

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblock: remove request_list code
Jens Axboe [Fri, 2 Nov 2018 14:46:15 +0000 (08:46 -0600)]
block: remove request_list code

It's now dead code, nobody uses it.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agobsg: move bsg-lib parts outside of request queue
Jens Axboe [Mon, 29 Oct 2018 15:47:17 +0000 (09:47 -0600)]
bsg: move bsg-lib parts outside of request queue

Get rid of the special bsg job fn and timeout handler, move them
into a private bsg_set instead.

Mostly from Christoph, with fixes for error handling and cleanups.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblock: kill legacy parts of timeout handling
Jens Axboe [Mon, 29 Oct 2018 16:25:07 +0000 (10:25 -0600)]
block: kill legacy parts of timeout handling

The only user of legacy timing now is BSG, which is invoked
from the mq timeout handler. Kill the legacy code, and rename
the q->rq_timed_out_fn to q->bsg_job_timeout_fn.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblock: remove __blk_put_request()
Jens Axboe [Wed, 24 Oct 2018 19:52:28 +0000 (13:52 -0600)]
block: remove __blk_put_request()

Now there's no difference between blk_put_request() and
__blk_put_request() anymore, get rid of the underscore version and
convert the few callers.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblock: get rid of MQ scheduler ops union
Jens Axboe [Thu, 1 Nov 2018 22:41:41 +0000 (16:41 -0600)]
block: get rid of MQ scheduler ops union

This is a remnant of when we had ops for both SQ and MQ
schedulers. Now it's just MQ, so get rid of the union.

Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblock: remove dead elevator code
Jens Axboe [Mon, 29 Oct 2018 16:23:51 +0000 (10:23 -0600)]
block: remove dead elevator code

This removes a bunch of core and elevator related code. On the core
front, we remove anything related to queue running, draining,
initialization, plugging, and congestions. We also kill anything
related to request allocation, merging, retrieval, and completion.

Remove any checking for single queue IO schedulers, as they no
longer exist. This means we can also delete a bunch of code related
to request issue, adding, completion, etc - and all the SQ related
ops and helpers.

Also kill the load_default_modules(), as all that did was provide
for a way to load the default single queue elevator.

Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblock: remove legacy IO schedulers
Jens Axboe [Fri, 12 Oct 2018 16:14:46 +0000 (10:14 -0600)]
block: remove legacy IO schedulers

Retain the deadline documentation, as that carries over to mq-deadline
as well.

Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblock: cleanup kick/queued handling
Jens Axboe [Wed, 31 Oct 2018 18:43:24 +0000 (12:43 -0600)]
block: cleanup kick/queued handling

Now that blk_flush_queue_rq() always returns false, we can
remove that return value. That bubbles through the stack,
allowing us to remove a bunch of state tracking around it.

Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblock: remove non mq parts from the flush code
Jens Axboe [Sat, 13 Oct 2018 21:44:12 +0000 (15:44 -0600)]
block: remove non mq parts from the flush code

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblock: remove legacy rq tagging
Jens Axboe [Wed, 24 Oct 2018 09:39:36 +0000 (03:39 -0600)]
block: remove legacy rq tagging

It's now unused, kill it.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblk-cgroup: remove legacy queue bypassing
Jens Axboe [Thu, 11 Oct 2018 23:46:00 +0000 (17:46 -0600)]
blk-cgroup: remove legacy queue bypassing

We only support mq devices now.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblk-wbt: kill check for legacy queue type
Jens Axboe [Fri, 12 Oct 2018 16:04:48 +0000 (10:04 -0600)]
blk-wbt: kill check for legacy queue type

Everything is blk-mq at this point, so it doesn't make any sense
to have this option available as it does nothing.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblock: remove blk_complete_request()
Jens Axboe [Mon, 22 Oct 2018 11:12:32 +0000 (05:12 -0600)]
block: remove blk_complete_request()

It's now unused.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agobsg: convert to use blk-mq
Jens Axboe [Wed, 24 Oct 2018 13:11:39 +0000 (07:11 -0600)]
bsg: convert to use blk-mq

Requires a few changes to the FC transport class as well.

Cc: linux-scsi@vger.kernel.org
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Tested-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agobsg: provide bsg_remove_queue() helper
Jens Axboe [Fri, 26 Oct 2018 17:27:02 +0000 (11:27 -0600)]
bsg: provide bsg_remove_queue() helper

All drivers do unregister + cleanup, provide a helper for that.

Cc: linux-scsi@vger.kernel.org
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agobsg: pass in desired timeout handler
Jens Axboe [Fri, 26 Oct 2018 17:26:25 +0000 (11:26 -0600)]
bsg: pass in desired timeout handler

This will ease in the conversion to blk-mq, where we can't set
a timeout handler after queue init.

Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: linux-scsi@vger.kernel.org
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Benjamin Block <bblock@linux.vnet.ibm.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agodasd: remove dead code
Jens Axboe [Thu, 25 Oct 2018 09:07:57 +0000 (11:07 +0200)]
dasd: remove dead code

Since e443343e509a we haven't had a request_fn attached to
this driver, hence any code inside an if (q->request_fn) is
unreachable.

Fixes: e443343e509a ("s390/dasd: blk-mq conversion")
[sth: Keep and fix the dasd_info->chanq_len counter.]
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblock: remove q->lld_busy_fn()
Jens Axboe [Mon, 29 Oct 2018 16:22:19 +0000 (10:22 -0600)]
block: remove q->lld_busy_fn()

Nobody is using the legacy path for blk_lld_busy() anymore, remove
it.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoscsi: kill off the legacy IO path
Jens Axboe [Thu, 1 Nov 2018 22:36:27 +0000 (16:36 -0600)]
scsi: kill off the legacy IO path

This removes the legacy (non-mq) IO path for SCSI.

Cc: linux-scsi@vger.kernel.org
Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoscsi: provide mq_ops->busy() hook
Jens Axboe [Mon, 29 Oct 2018 16:17:28 +0000 (10:17 -0600)]
scsi: provide mq_ops->busy() hook

Only the SCSI legacy path provides a way to check if target is
currently busy, provide the same for the MQ path.

Cc: linux-scsi@vger.kernel.org
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblk-mq: provide mq_ops->busy() hook
Jens Axboe [Mon, 29 Oct 2018 16:15:10 +0000 (10:15 -0600)]
blk-mq: provide mq_ops->busy() hook

We'll hook into this from blk_lld_busy(), allowing blk-mq to also
return whether or not a given queue currently has requests in
progress.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblk-mq: remove legacy check in queue blk_freeze_queue()
Jens Axboe [Fri, 12 Oct 2018 00:06:02 +0000 (18:06 -0600)]
blk-mq: remove legacy check in queue blk_freeze_queue()

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoblk-mq: remove the request_list usage
Jens Axboe [Thu, 11 Oct 2018 23:03:21 +0000 (17:03 -0600)]
blk-mq: remove the request_list usage

We don't do anything with it, that's just the legacy path.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoide: convert to blk-mq
Jens Axboe [Fri, 26 Oct 2018 15:53:52 +0000 (09:53 -0600)]
ide: convert to blk-mq

ide-disk and ide-cd tested as working just fine, ide-tape and
ide-floppy haven't. But the latter don't require changes, so they
should work without issue.

Add helper function to insert a request from a work queue, since we
cannot invoke the blk-mq request insertion from IRQ context.

Cc: David Miller <davem@davemloft.net>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agomspro_block: convert to blk-mq
Jens Axboe [Mon, 15 Oct 2018 15:00:02 +0000 (09:00 -0600)]
mspro_block: convert to blk-mq

Straight forward conversion, there's room for improvement.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoms_block: convert to blk-mq
Jens Axboe [Mon, 15 Oct 2018 14:58:05 +0000 (08:58 -0600)]
ms_block: convert to blk-mq

Straight forward conversion, room for optimization in how everything
is punted to a work queue. Also looks plenty racy all over the map,
with the state changes. I fixed a bunch of them up while doing the
conversion, but there are surely more.

Cc: Maxim Levitsky <maximlevitsky@gmail.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agosunvdc: convert to blk-mq
Jens Axboe [Mon, 15 Oct 2018 14:54:23 +0000 (08:54 -0600)]
sunvdc: convert to blk-mq

Convert from the old request_fn style driver to blk-mq.

Cc: David Miller <davem@davemloft.net>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agonull_blk: Add conventional zone configuration for zoned support
Masato Suzuki [Tue, 30 Oct 2018 07:14:05 +0000 (16:14 +0900)]
null_blk: Add conventional zone configuration for zoned support

Allow the creation of conventional zones by adding the zone_nr_conv
configuration attribute. This new attribute is used only for zoned devices
and indicates the number of conventional zones to create. The default value
is 0. Since host-managed zoned block devices must always have at least one
sequential zone, if the value of zone_nr_conv is larger than or equal to
the total number of zones of the device nr_zones, zone_nr_conv is
automatically changed to nr_zones - 1.

Reviewed-by: Matias Bjorling <matias.bjorling@wdc.com>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Masato Suzuki <masato.suzuki@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
6 years agoMerge tag 'hwmon-for-v4.20-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 7 Nov 2018 19:39:07 +0000 (11:39 -0800)]
Merge tag 'hwmon-for-v4.20-rc2' of git://git./linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:

 - Remove bogus __init annotations in ibmpowernv driver

 - Fix double-free in error handling of __hwmon_device_register()

* tag 'hwmon-for-v4.20-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (ibmpowernv) Remove bogus __init annotations
  hwmon: (core) Fix double-free in __hwmon_device_register()

6 years agoMerge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Wed, 7 Nov 2018 17:13:34 +0000 (09:13 -0800)]
Merge tag 'armsoc-fixes' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "A few more fixes that have come in, and one revert of a previous fix.

  I was a bit too trigger happy to enable PREEMPT on multi_v7_defconfig,
  and it ended up regressing at least BeagleBone XM boards. While we get
  that debugged for next merge window, let's disable it again.

  Beyond that:

   - Stratix change to fix multicast filtering

   - Minor DT fixes for Renesas and i.MX

   - Ethernet fix for a Renesas board (switching main interfaces)

   - Ethernet phy regulator fix for i.MX6SX"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arm64: dts: stratix10: fix multicast filtering
  ARM: defconfig: Disable PREEMPT again on  multi_v7
  arm64: dts: renesas: condor: switch from EtherAVB to GEther
  dt-bindings: arm: Fix RZ/G2E part number
  arm64: dts: renesas: r8a7795: add missing dma-names on hscif2
  ARM: dts: imx6sx-sdb: Fix enet phy regulator
  ARM: dts: fsl: Fix improperly quoted stdout-path values
  ARM: dts: imx6sll: fix typo for fsl,imx6sll-i2c node

6 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Linus Torvalds [Wed, 7 Nov 2018 17:05:58 +0000 (09:05 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/hid/hid

Pull HID fixes from Jiri Kosina:

 - hid.git is moving towards group maintainership (where group is myself
   and Benjamin Tissoires), therefore this pull request updates
   MAINTAINERS accordingly

 - fix for hid-asus config dependency from Arnd Bergmann

 - two device-specific quirks for i2c-hid from Julian Sax and Kai-Heng
   Feng

 - other few small assorted fixes

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
  HID: fix up .raw_event() documentation
  HID: asus: fix build warning wiht CONFIG_ASUS_WMI disabled
  HID: i2c-hid: add Direkt-Tek DTLAPY133-1 to descriptor override
  HID: moving to group maintainership model
  HID: alps: allow incoming reports when only the trackstick is opened
  Revert "HID: add NOGET quirk for Eaton Ellipse MAX UPS"
  HID: i2c-hid: Add a small delay after sleep command for Raydium touchpanel
  HID: hiddev: fix potential Spectre v1

6 years agoMerge tag 'stratix10_dts_fix_for_v4.20' of git://git.kernel.org/pub/scm/linux/kernel...
Olof Johansson [Wed, 7 Nov 2018 16:07:59 +0000 (08:07 -0800)]
Merge tag 'stratix10_dts_fix_for_v4.20' of git://git./linux/kernel/git/dinguyen/linux into fixes

ARM: dts: stratix10: fix multicast filtering

On Stratix 10, the EMAC has 256 hash buckets for multicast filtering. This
needs to be specified in DTS, otherwise the stmmac driver defaults to 64
buckets and initializes the filter incorrectly. As a result, e.g. valid
IPv6 multicast traffic ends up being dropped.

* tag 'stratix10_dts_fix_for_v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
  arm64: dts: stratix10: fix multicast filtering

Signed-off-by: Olof Johansson <olof@lixom.net>
6 years agoMerge tag 'renesas-fixes-for-v4.20' of https://git.kernel.org/pub/scm/linux/kernel...
Olof Johansson [Wed, 7 Nov 2018 15:59:33 +0000 (07:59 -0800)]
Merge tag 'renesas-fixes-for-v4.20' of https://git./linux/kernel/git/horms/renesas into fixes

Renesas ARM Based SoC Fixes for v4.20

* R-Car V3H (r8a77980) based Condor board
  - Switch from EtherAVB to GEther to match offical boards

* RZ/G2E (ra8774c0) SoC: correct documentation of part number

* R-Car H3 (r8a7795) SoC: reinstate all DMA channels on HSCIF2

* tag 'renesas-fixes-for-v4.20' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  arm64: dts: renesas: condor: switch from EtherAVB to GEther
  dt-bindings: arm: Fix RZ/G2E part number
  arm64: dts: renesas: r8a7795: add missing dma-names on hscif2

Signed-off-by: Olof Johansson <olof@lixom.net>
6 years agoMerge tag 'trace-v4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
Linus Torvalds [Tue, 6 Nov 2018 16:12:10 +0000 (08:12 -0800)]
Merge tag 'trace-v4.20-rc1' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing fix from Steven Rostedt:
 "Masami found a slight bug in his code where he transposed the
  arguments of a call to strpbrk.

  The reason this wasn't detected in our tests is that the only way this
  would transpire is when a kprobe event with a symbol offset is
  attached to a function that belongs to a module that isn't loaded yet.
  When the kprobe trace event is added, the offset would be truncated
  after it was parsed, and when the module is loaded, it would use the
  symbol without the offset (as the nul character added by the parsing
  would not be replaced with the original character)"

* tag 'trace-v4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing/kprobes: Fix strpbrk() argument order

6 years agoMerge branch 'spectre' of git://git.armlinux.org.uk/~rmk/linux-arm
Linus Torvalds [Tue, 6 Nov 2018 16:10:01 +0000 (08:10 -0800)]
Merge branch 'spectre' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM fix from Russell King:
 "Ard spotted a typo in one of the assembly files which leads to a
  kernel oops when that code path is executed. Fix this"

* 'spectre' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8809/1: proc-v7: fix Thumb annotation of cpu_v7_hvc_switch_mm

6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Tue, 6 Nov 2018 15:44:04 +0000 (07:44 -0800)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Handle errors mid-stream of an all dump, from Alexey Kodanev.

 2) Fix build of openvswitch with certain combinations of netfilter
    options, from Arnd Bergmann.

 3) Fix interactions between GSO and BQL, from Eric Dumazet.

 4) Don't put a '/' in RTL8201F's sysfs file name, from Holger
    Hoffstätte.

 5) S390 qeth driver fixes from Julian Wiedmann.

 6) Allow ipv6 link local addresses for netconsole when both source and
    destination are link local, from Matwey V. Kornilov.

 7) Fix the BPF program address seen in /proc/kallsyms, from Song Liu.

 8) Initialize mutex before use in dsa microchip driver, from Tristram
    Ha.

 9) Out-of-bounds access in hns3, from Yunsheng Lin.

10) Various netfilter fixes from Stefano Brivio, Jozsef Kadlecsik, Jiri
    Slaby, Florian Westphal, Eric Westbrook, Andrey Ryabinin, and Pablo
    Neira Ayuso.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (50 commits)
  net: alx: make alx_drv_name static
  net: bpfilter: fix iptables failure if bpfilter_umh is disabled
  sock_diag: fix autoloading of the raw_diag module
  net: core: netpoll: Enable netconsole IPv6 link local address
  ipv6: properly check return value in inet6_dump_all()
  rtnetlink: restore handling of dumpit return value in rtnl_dump_all()
  net/ipv6: Move anycast init/cleanup functions out of CONFIG_PROC_FS
  bonding/802.3ad: fix link_failure_count tracking
  net: phy: realtek: fix RTL8201F sysfs name
  sctp: define SCTP_SS_DEFAULT for Stream schedulers
  sctp: fix strchange_flags name for Stream Change Event
  mlxsw: spectrum: Fix IP2ME CPU policer configuration
  openvswitch: fix linking without CONFIG_NF_CONNTRACK_LABELS
  qed: fix link config error handling
  net: hns3: Fix for out-of-bounds access when setting pfc back pressure
  net/mlx4_en: use __netdev_tx_sent_queue()
  net: do not abort bulk send on BQL status
  net: bql: add __netdev_tx_sent_queue()
  s390/qeth: report 25Gbit link speed
  s390/qeth: sanitize ARP requests
  ...

6 years agoHID: fix up .raw_event() documentation
Linus Walleij [Sun, 4 Nov 2018 10:32:47 +0000 (11:32 +0100)]
HID: fix up .raw_event() documentation

The documentation for the .raw_event() callback says that if the
driver return 1, there will be no further processing of the event,
but this is not true, the actual code in hid-core.c looks like this:

  if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
           ret = hdrv->raw_event(hid, report, data, size);
           if (ret < 0)
                   goto unlock;
   }

   ret = hid_report_raw_event(hid, type, data, size, interrupt);

The only return value that has any effect on the processing is
a negative error.

Correct this as it seems to confuse people: I found bogus code in
the Razer out-of-tree driver attempting to return 1 here.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
6 years agoHID: asus: fix build warning wiht CONFIG_ASUS_WMI disabled
Arnd Bergmann [Fri, 2 Nov 2018 15:14:32 +0000 (16:14 +0100)]
HID: asus: fix build warning wiht CONFIG_ASUS_WMI disabled

asus_wmi_evaluate_method() is an empty dummy function when CONFIG_ASUS_WMI
is disabled, or not reachable from a built-in device driver. This leads to
a theoretical evaluation of an uninitialized variable that the compiler
complains about, failing to check that the hardcoded return value makes
this an unreachable code path:

In file included from include/linux/printk.h:336,
                 from include/linux/kernel.h:14,
                 from include/linux/list.h:9,
                 from include/linux/dmi.h:5,
                 from drivers/hid/hid-asus.c:29:
drivers/hid/hid-asus.c: In function 'asus_input_configured':
include/linux/dynamic_debug.h:135:3: error: 'value' may be used uninitialized in this function [-Werror=maybe-uninitialized]
   __dynamic_dev_dbg(&descriptor, dev, fmt, \
   ^~~~~~~~~~~~~~~~~
drivers/hid/hid-asus.c:359:6: note: 'value' was declared here
  u32 value;
      ^~~~~

With an extra IS_ENABLED() check, the warning goes away.

Fixes: 3b692c55e58d ("HID: asus: only support backlight when it's not driven by WMI")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
6 years agoMerge branch 'master' into for-4.20/upstream-fixes
Jiri Kosina [Tue, 6 Nov 2018 12:57:02 +0000 (13:57 +0100)]
Merge branch 'master' into for-4.20/upstream-fixes

Pull in a merge commit that brought in 3b692c55e58d ("HID: asus: only
support backlight when it's not driven by WMI") so that fixup could be
applied on top of it.

6 years agoARM: 8809/1: proc-v7: fix Thumb annotation of cpu_v7_hvc_switch_mm
Ard Biesheuvel [Mon, 5 Nov 2018 13:54:56 +0000 (14:54 +0100)]
ARM: 8809/1: proc-v7: fix Thumb annotation of cpu_v7_hvc_switch_mm

Due to what appears to be a copy/paste error, the opening ENTRY()
of cpu_v7_hvc_switch_mm() lacks a matching ENDPROC(), and instead,
the one for cpu_v7_smc_switch_mm() is duplicated.

Given that it is ENDPROC() that emits the Thumb annotation, the
cpu_v7_hvc_switch_mm() routine will be called in ARM mode on a
Thumb2 kernel, resulting in the following splat:

  Internal error: Oops - undefined instruction: 0 [#1] SMP THUMB2
  Modules linked in:
  CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.18.0-rc1-00030-g4d28ad89189d-dirty #488
  Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015
  PC is at cpu_v7_hvc_switch_mm+0x12/0x18
  LR is at flush_old_exec+0x31b/0x570
  pc : [<c0316efe>]    lr : [<c04117c7>]    psr: 00000013
  sp : ee899e50  ip : 00000000  fp : 00000001
  r10: eda28f34  r9 : eda31800  r8 : c12470e0
  r7 : eda1fc00  r6 : eda53000  r5 : 00000000  r4 : ee88c000
  r3 : c0316eec  r2 : 00000001  r1 : eda53000  r0 : 6da6c000
  Flags: nzcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none

Note the 'ISA ARM' in the last line.

Fix this by using the correct name in ENDPROC().

Cc: <stable@vger.kernel.org>
Fixes: 10115105cb3a ("ARM: spectre-v2: add firmware based hardening")
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
David S. Miller [Tue, 6 Nov 2018 01:19:25 +0000 (17:19 -0800)]
Merge git://git./pub/scm/linux/kernel/git/pablo/nf

Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains the first batch of Netfilter fixes for
your net tree:

1) Fix splat with IPv6 defragmenting locally generated fragments,
   from Florian Westphal.

2) Fix Incorrect check for missing attribute in nft_osf.

3) Missing INT_MIN & INT_MAX definition for netfilter bridge uapi
   header, from Jiri Slaby.

4) Revert map lookup in nft_numgen, this is already possible with
   the existing infrastructure without this extension.

5) Fix wrong listing of set reference counter, make counter
   synchronous again, from Stefano Brivio.

6) Fix CIDR 0 in hash:net,port,net, from Eric Westbrook.

7) Fix allocation failure with large set, use kvcalloc().
   From Andrey Ryabinin.

8) No need to disable BH when fetch ip set comment, patch from
   Jozsef Kadlecsik.

9) Sanity check for valid sysfs entry in xt_IDLETIMER, from
   Taehee Yoo.

10) Fix suspicious rcu usage via ip_set() macro at netlink dump,
    from Jozsef Kadlecsik.

11) Fix setting default timeout via nfnetlink_cttimeout, this
    comes with preparation patch to add nf_{tcp,udp,...}_pernet()
    helper.

12) Allow ebtables table nat to be of filter type via nft_compat.
    From Florian Westphal.

13) Incorrect calculation of next bucket in early_drop, do no bump
    hash value, update bucket counter instead. From Vasily Khoruzhick.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: alx: make alx_drv_name static
Rasmus Villemoes [Mon, 5 Nov 2018 17:52:21 +0000 (18:52 +0100)]
net: alx: make alx_drv_name static

alx_drv_name is not used outside main.c, so there's no reason for it to
have external linkage.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: bpfilter: fix iptables failure if bpfilter_umh is disabled
Taehee Yoo [Mon, 5 Nov 2018 13:31:41 +0000 (22:31 +0900)]
net: bpfilter: fix iptables failure if bpfilter_umh is disabled

When iptables command is executed, ip_{set/get}sockopt() try to upload
bpfilter.ko if bpfilter is enabled. if it couldn't find bpfilter.ko,
command is failed.
bpfilter.ko is generated if CONFIG_BPFILTER_UMH is enabled.
ip_{set/get}sockopt() only checks CONFIG_BPFILTER.
So that if CONFIG_BPFILTER is enabled and CONFIG_BPFILTER_UMH is disabled,
iptables command is always failed.

test config:
   CONFIG_BPFILTER=y
   # CONFIG_BPFILTER_UMH is not set

test command:
   %iptables -L
   iptables: No chain/target/match by that name.

Fixes: d2ba09c17a06 ("net: add skeleton of bpfilter kernel module")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agosock_diag: fix autoloading of the raw_diag module
Andrei Vagin [Mon, 5 Nov 2018 06:37:15 +0000 (22:37 -0800)]
sock_diag: fix autoloading of the raw_diag module

IPPROTO_RAW isn't registred as an inet protocol, so
inet_protos[protocol] is always NULL for it.

Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Xin Long <lucien.xin@gmail.com>
Fixes: bf2ae2e4bf93 ("sock_diag: request _diag module only when the family or proto has been registered")
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Reviewed-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: core: netpoll: Enable netconsole IPv6 link local address
Matwey V. Kornilov [Fri, 2 Nov 2018 18:19:36 +0000 (21:19 +0300)]
net: core: netpoll: Enable netconsole IPv6 link local address

There is no reason to discard using source link local address when
remote netconsole IPv6 address is set to be link local one.

The patch allows administrators to use IPv6 netconsole without
explicitly configuring source address:

    netconsole=@/,@fe80::5054:ff:fe2f:6012/

Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoipv6: properly check return value in inet6_dump_all()
Alexey Kodanev [Fri, 2 Nov 2018 16:11:05 +0000 (19:11 +0300)]
ipv6: properly check return value in inet6_dump_all()

Make sure we call fib6_dump_end() if it happens that skb->len
is zero. rtnl_dump_all() can reset cb->args on the next loop
iteration there.

Fixes: 08e814c9e8eb ("net/ipv6: Bail early if user only wants cloned entries")
Fixes: ae677bbb4441 ("net: Don't return invalid table id error when dumping all families")
Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agortnetlink: restore handling of dumpit return value in rtnl_dump_all()
Alexey Kodanev [Fri, 2 Nov 2018 16:11:04 +0000 (19:11 +0300)]
rtnetlink: restore handling of dumpit return value in rtnl_dump_all()

For non-zero return from dumpit() we should break the loop
in rtnl_dump_all() and return the result. Otherwise, e.g.,
we could get the memory leak in inet6_dump_fib() [1]. The
pointer to the allocated struct fib6_walker there (saved
in cb->args) can be lost, reset on the next iteration.

Fix it by partially restoring the previous behavior before
commit c63586dc9b3e ("net: rtnl_dump_all needs to propagate
error from dumpit function"). The returned error from
dumpit() is still passed further.

[1]:
unreferenced object 0xffff88001322a200 (size 96):
  comm "sshd", pid 1484, jiffies 4296032768 (age 1432.542s)
  hex dump (first 32 bytes):
    00 01 00 00 00 00 ad de 00 02 00 00 00 00 ad de  ................
    18 09 41 36 00 88 ff ff 18 09 41 36 00 88 ff ff  ..A6......A6....
  backtrace:
    [<0000000095846b39>] kmem_cache_alloc_trace+0x151/0x220
    [<000000007d12709f>] inet6_dump_fib+0x68d/0x940
    [<000000002775a316>] rtnl_dump_all+0x1d9/0x2d0
    [<00000000d7cd302b>] netlink_dump+0x945/0x11a0
    [<000000002f43485f>] __netlink_dump_start+0x55d/0x800
    [<00000000f76bbeec>] rtnetlink_rcv_msg+0x4fa/0xa00
    [<000000009b5761f3>] netlink_rcv_skb+0x29c/0x420
    [<0000000087a1dae1>] rtnetlink_rcv+0x15/0x20
    [<00000000691b703b>] netlink_unicast+0x4e3/0x6c0
    [<00000000b5be0204>] netlink_sendmsg+0x7f2/0xba0
    [<0000000096d2aa60>] sock_sendmsg+0xba/0xf0
    [<000000008c1b786f>] __sys_sendto+0x1e4/0x330
    [<0000000019587b3f>] __x64_sys_sendto+0xe1/0x1a0
    [<00000000071f4d56>] do_syscall_64+0x9f/0x300
    [<000000002737577f>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
    [<0000000057587684>] 0xffffffffffffffff

Fixes: c63586dc9b3e ("net: rtnl_dump_all needs to propagate error from dumpit function")
Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/ipv6: Move anycast init/cleanup functions out of CONFIG_PROC_FS
Jeff Barnhill [Mon, 5 Nov 2018 20:36:45 +0000 (20:36 +0000)]
net/ipv6: Move anycast init/cleanup functions out of CONFIG_PROC_FS

Move the anycast.c init and cleanup functions which were inadvertently
added inside the CONFIG_PROC_FS definition.

Fixes: 2384d02520ff ("net/ipv6: Add anycast addresses to a global hashtable")
Signed-off-by: Jeff Barnhill <0xeffeff@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoarm64: dts: stratix10: fix multicast filtering
Aaro Koskinen [Fri, 2 Nov 2018 19:10:48 +0000 (21:10 +0200)]
arm64: dts: stratix10: fix multicast filtering

On Stratix 10, the EMAC has 256 hash buckets for multicast filtering. This
needs to be specified in DTS, otherwise the stmmac driver defaults to 64
buckets and initializes the filter incorrectly. As a result, e.g. valid
IPv6 multicast traffic ends up being dropped.

Fixes: 78cd6a9d8e15 ("arm64: dts: Add base stratix 10 dtsi")
Cc: stable@vger.kernel.org
Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
6 years agocompiler: remove __no_sanitize_address_or_inline again
Martin Schwidefsky [Mon, 5 Nov 2018 06:36:28 +0000 (07:36 +0100)]
compiler: remove __no_sanitize_address_or_inline again

The __no_sanitize_address_or_inline and __no_kasan_or_inline defines
are almost identical. The only difference is that __no_kasan_or_inline
does not have the 'notrace' attribute.

To be able to replace __no_sanitize_address_or_inline with the older
definition, add 'notrace' to __no_kasan_or_inline and change to two
users of __no_sanitize_address_or_inline in the s390 code.

The 'notrace' option is necessary for e.g. the __load_psw_mask function
in arch/s390/include/asm/processor.h. Without the option it is possible
to trace __load_psw_mask which leads to kernel stack overflow.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Pointed-out-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agotracing/kprobes: Fix strpbrk() argument order
Masami Hiramatsu [Thu, 1 Nov 2018 14:29:28 +0000 (23:29 +0900)]
tracing/kprobes: Fix strpbrk() argument order

Fix strpbrk()'s argument order, it must pass acceptable string
in 2nd argument. Note that this can cause a kernel panic where
it recovers backup character to code->data.

Link: http://lkml.kernel.org/r/154108256792.2604.1816052586385217811.stgit@devbox
Fixes: a6682814f371 ("tracing/kprobes: Allow kprobe-events to record module symbol")
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
6 years agoMerge tag 'imx-fixes-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo...
Olof Johansson [Mon, 5 Nov 2018 14:39:40 +0000 (06:39 -0800)]
Merge tag 'imx-fixes-4.20' of git://git./linux/kernel/git/shawnguo/linux into fixes

i.MX fixes for 4.20:
 - Add boot-on and always-on for imx6sx-sdb phy regulator to fix enet
   resume problem, which is exposed by commit ("regulator: fixed:
   Convert to use GPIO descriptor only").
 - Fix improperly quoted stdout-path values for imx53-ppd and
   vf610m4-colibri board.
 - Fix the typo of compatible string "fs,imx6sll-i2c" which should be
   "fsl,imx6sll-i2c".

* tag 'imx-fixes-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  ARM: dts: imx6sx-sdb: Fix enet phy regulator
  ARM: dts: fsl: Fix improperly quoted stdout-path values
  ARM: dts: imx6sll: fix typo for fsl,imx6sll-i2c node

Signed-off-by: Olof Johansson <olof@lixom.net>
6 years agoARM: defconfig: Disable PREEMPT again on multi_v7
Olof Johansson [Mon, 5 Nov 2018 14:34:09 +0000 (06:34 -0800)]
ARM: defconfig: Disable PREEMPT again on  multi_v7

I should have let this soak for a while in linux-next, since we have at
least one board that hit a regression from it. Revert from 4.20-rc, and
we'll queue it for next merge window once regression is fixed.

This reverts commit 513eb98595522bc0cb83831a9daee1d5738e66f1.

Signed-off-by: Olof Johansson <olof@lixom.net>
6 years agoarm64: dts: renesas: condor: switch from EtherAVB to GEther
Sergei Shtylyov [Thu, 18 Oct 2018 16:48:53 +0000 (19:48 +0300)]
arm64: dts: renesas: condor: switch from EtherAVB to GEther

The "official" Condor boards have always been wired to mount NFS via
GEther, not EtherAVB -- the boards resoldered for EtherAVB were local
to Cogent Embedded, so we've been having an unpleasant situation where
a "normal" Condor board still can't mount NFS (unless an EtherAVB PHY
extension board is plugged in). Switch from EtherAVB to GEther at last!

Fixes: 8091788f3d38 ("arm64: dts: renesas: condor: add EtherAVB support")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agodt-bindings: arm: Fix RZ/G2E part number
Fabrizio Castro [Thu, 4 Oct 2018 08:53:10 +0000 (09:53 +0100)]
dt-bindings: arm: Fix RZ/G2E part number

Fix RZ/G2E part number from its description.

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agoarm64: dts: renesas: r8a7795: add missing dma-names on hscif2
Kuninori Morimoto [Fri, 28 Sep 2018 02:38:36 +0000 (02:38 +0000)]
arm64: dts: renesas: r8a7795: add missing dma-names on hscif2

hscif2 has 4 dmas, but has only 2 dma-names.
This patch add missing dma-names.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Fixes: e0f0bda79337701a ("arm64: dts: renesas: r8a7795: sort subnodes
of the soc node")
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
6 years agogenirq/affinity: Add support for allocating interrupt sets
Jens Axboe [Fri, 2 Nov 2018 14:59:51 +0000 (22:59 +0800)]
genirq/affinity: Add support for allocating interrupt sets

A driver may have a need to allocate multiple sets of MSI/MSI-X interrupts,
and have them appropriately affinitized.

Add support for defining a number of sets in the irq_affinity structure, of
varying sizes, and get each set affinitized correctly across the machine.

[ tglx: Minor changelog tweaks ]

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Cc: linux-block@vger.kernel.org
Link: https://lkml.kernel.org/r/20181102145951.31979-5-ming.lei@redhat.com
6 years agogenirq/affinity: Pass first vector to __irq_build_affinity_masks()
Ming Lei [Fri, 2 Nov 2018 14:59:50 +0000 (22:59 +0800)]
genirq/affinity: Pass first vector to __irq_build_affinity_masks()

No functional change.

Prepares for support of allocating and affinitizing sets of interrupts, in
which each set of interrupts needs a full two stage spreading. The first
vector argument is necessary for this so the affinitizing starts from the
first vector of each set.

[ tglx: Minor changelog tweaks ]

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org
Cc: Hannes Reinecke <hare@suse.com>
Cc: Keith Busch <keith.busch@intel.com>
Cc: Sagi Grimberg <sagi@grimberg.me>
Link: https://lkml.kernel.org/r/20181102145951.31979-4-ming.lei@redhat.com
6 years agogenirq/affinity: Move two stage affinity spreading into a helper function
Ming Lei [Fri, 2 Nov 2018 14:59:49 +0000 (22:59 +0800)]
genirq/affinity: Move two stage affinity spreading into a helper function

No functional change. Prepares for supporting allocating and affinitizing
interrupt sets.

[ tglx: Minor changelog tweaks ]

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org
Cc: Hannes Reinecke <hare@suse.com>
Cc: Keith Busch <keith.busch@intel.com>
Cc: Sagi Grimberg <sagi@grimberg.me>
Link: https://lkml.kernel.org/r/20181102145951.31979-3-ming.lei@redhat.com
6 years agogenirq/affinity: Spread IRQs to all available NUMA nodes
Long Li [Fri, 2 Nov 2018 18:02:48 +0000 (18:02 +0000)]
genirq/affinity: Spread IRQs to all available NUMA nodes

If the number of NUMA nodes exceeds the number of MSI/MSI-X interrupts
which are allocated for a device, the interrupt affinity spreading code
fails to spread them across all nodes.

The reason is, that the spreading code starts from node 0 and continues up
to the number of interrupts requested for allocation. This leaves the nodes
past the last interrupt unused.

This results in interrupt concentration on the first nodes which violates
the assumption of the block layer that all nodes are covered evenly. As a
consequence the NUMA nodes above the number of interrupts are all assigned
to hardware queue 0 and therefore NUMA node 0, which results in bad
performance and has CPU hotplug implications, because queue 0 gets shut
down when the last CPU of node 0 is offlined.

Go over all NUMA nodes and assign them round-robin to all requested
interrupts to solve this.

[ tglx: Massaged changelog ]

Signed-off-by: Long Li <longli@microsoft.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Cc: Michael Kelley <mikelley@microsoft.com>
Link: https://lkml.kernel.org/r/20181102180248.13583-1-longli@linuxonhyperv.com
6 years agoARM: dts: imx6sx-sdb: Fix enet phy regulator
Leonard Crestez [Mon, 8 Oct 2018 15:28:01 +0000 (15:28 +0000)]
ARM: dts: imx6sx-sdb: Fix enet phy regulator

Bindings for "fixed-regulator" only explicitly support "gpio" property,
not "gpios". Fix by correcting the property name.

The enet PHYs on imx6sx-sdb needs to be explicitly reset after a power
cycle, this can be handled by the phy-reset-gpios property. Sadly this
is not handled on suspend: the fec driver turns phy-supply off but
doesn't assert phy-reset-gpios again on resume.

Since additional phy-level work is required to support powering off the
phy in suspend fix the problem by just marking the regulator as
"boot-on" "always-on" so that it's never turned off. This behavior is
equivalent to older releases.

Keep the phy-reset-gpios property on fec anyway because it is a correct
description of board design.

This issue was exposed by commit efdfeb079cc3 ("regulator: fixed:
Convert to use GPIO descriptor only") which causes the "gpios" property
to also be parsed. Before that commit the "gpios" property had no
effect, PHY reset was only handled in the the bootloader.

This fixes linux-next boot failures previously reported here:
 https://lore.kernel.org/patchwork/patch/982437/#1177900
 https://lore.kernel.org/patchwork/patch/994091/#1178304

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
6 years agoARM: dts: fsl: Fix improperly quoted stdout-path values
Rob Herring [Wed, 31 Oct 2018 01:02:30 +0000 (20:02 -0500)]
ARM: dts: fsl: Fix improperly quoted stdout-path values

A quoted label reference doesn't expand to the node path and is taken as
a literal string. Dropping the quotes can fix this unless the baudrate
string is appended in which case we have to use the alias.

At least on VF610, the problem was masked by setting the console in
bootargs. Use the alias syntax with baudrate parameter so we can drop
setting the console in bootargs.

Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
6 years agoARM: dts: imx6sll: fix typo for fsl,imx6sll-i2c node
Oleksij Rempel [Thu, 18 Oct 2018 11:26:13 +0000 (13:26 +0200)]
ARM: dts: imx6sll: fix typo for fsl,imx6sll-i2c node

Fix the type of compatible string "fs,imx6sll-i2c" which should be
"fsl,imx6sll-i2c".

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
6 years agobonding/802.3ad: fix link_failure_count tracking
Jarod Wilson [Sun, 4 Nov 2018 19:59:46 +0000 (14:59 -0500)]
bonding/802.3ad: fix link_failure_count tracking

Commit 4d2c0cda07448ea6980f00102dc3964eb25e241c set slave->link to
BOND_LINK_DOWN for 802.3ad bonds whenever invalid speed/duplex values
were read, to fix a problem with slaves getting into weird states, but
in the process, broke tracking of link failures, as going straight to
BOND_LINK_DOWN when a link is indeed down (cable pulled, switch rebooted)
means we broke out of bond_miimon_inspect()'s BOND_LINK_DOWN case because
!link_state was already true, we never incremented commit, and never got
a chance to call bond_miimon_commit(), where slave->link_failure_count
would be incremented. I believe the simple fix here is to mark the slave
as BOND_LINK_FAIL, and let bond_miimon_inspect() transition the link from
_FAIL to either _UP or _DOWN, and in the latter case, we now get proper
incrementing of link_failure_count again.

Fixes: 4d2c0cda0744 ("bonding: speed/duplex update at NETDEV_UP event")
CC: Mahesh Bandewar <maheshb@google.com>
CC: David S. Miller <davem@davemloft.net>
CC: netdev@vger.kernel.org
CC: stable@vger.kernel.org
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: phy: realtek: fix RTL8201F sysfs name
Holger Hoffstätte [Sun, 4 Nov 2018 18:02:42 +0000 (19:02 +0100)]
net: phy: realtek: fix RTL8201F sysfs name

Since 4.19 the following error in sysfs has appeared when using the
r8169 NIC driver:

$cd /sys/module/realtek/drivers
$ls -l
ls: cannot access 'mdio_bus:RTL8201F 10/100Mbps Ethernet': No such file or directory
[..garbled dir entries follow..]

Apparently the forward slash in "10/100Mbps Ethernet" is interpreted
as directory separator that leads nowhere, and was introduced in commit
513588dd44b ("net: phy: realtek: add RTL8201F phy-id and functions").

Fix this by removing the offending slash in the driver name.

Other drivers in net/phy seem to have the same problem, but I cannot
test/verify them.

Fixes: 513588dd44b ("net: phy: realtek: add RTL8201F phy-id and functions")
Signed-off-by: Holger Hoffstätte <holger@applied-asynchrony.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agohwmon: (ibmpowernv) Remove bogus __init annotations
Geert Uytterhoeven [Sun, 28 Oct 2018 17:16:51 +0000 (18:16 +0100)]
hwmon: (ibmpowernv) Remove bogus __init annotations

If gcc decides not to inline make_sensor_label():

    WARNING: vmlinux.o(.text+0x4df549c): Section mismatch in reference from the function .create_device_attrs() to the function .init.text:.make_sensor_label()
    The function .create_device_attrs() references
    the function __init .make_sensor_label().
    This is often because .create_device_attrs lacks a __init
    annotation or the annotation of .make_sensor_label is wrong.

As .probe() can be called after freeing of __init memory, all __init
annotiations in the driver are bogus, and should be removed.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
6 years agohwmon: (core) Fix double-free in __hwmon_device_register()
Dmitry Osipenko [Wed, 24 Oct 2018 19:37:13 +0000 (22:37 +0300)]
hwmon: (core) Fix double-free in __hwmon_device_register()

Fix double-free that happens when thermal zone setup fails, see KASAN log
below.

==================================================================
BUG: KASAN: double-free or invalid-free in __hwmon_device_register+0x5dc/0xa7c

CPU: 0 PID: 132 Comm: kworker/0:2 Tainted: G    B             4.19.0-rc8-next-20181016-00042-gb52cd80401e9-dirty #41
Hardware name: NVIDIA Tegra SoC (Flattened Device Tree)
Workqueue: events deferred_probe_work_func
Backtrace:
[<c0110540>] (dump_backtrace) from [<c0110944>] (show_stack+0x20/0x24)
[<c0110924>] (show_stack) from [<c105cb08>] (dump_stack+0x9c/0xb0)
[<c105ca6c>] (dump_stack) from [<c02fdaec>] (print_address_description+0x68/0x250)
[<c02fda84>] (print_address_description) from [<c02fd4ac>] (kasan_report_invalid_free+0x68/0x88)
[<c02fd444>] (kasan_report_invalid_free) from [<c02fc85c>] (__kasan_slab_free+0x1f4/0x200)
[<c02fc668>] (__kasan_slab_free) from [<c02fd0c0>] (kasan_slab_free+0x14/0x18)
[<c02fd0ac>] (kasan_slab_free) from [<c02f9c6c>] (kfree+0x90/0x294)
[<c02f9bdc>] (kfree) from [<c0b41bbc>] (__hwmon_device_register+0x5dc/0xa7c)
[<c0b415e0>] (__hwmon_device_register) from [<c0b421e8>] (hwmon_device_register_with_info+0xa0/0xa8)
[<c0b42148>] (hwmon_device_register_with_info) from [<c0b42324>] (devm_hwmon_device_register_with_info+0x74/0xb4)
[<c0b422b0>] (devm_hwmon_device_register_with_info) from [<c0b4481c>] (lm90_probe+0x414/0x578)
[<c0b44408>] (lm90_probe) from [<c0aeeff4>] (i2c_device_probe+0x35c/0x384)
[<c0aeec98>] (i2c_device_probe) from [<c08776cc>] (really_probe+0x290/0x3e4)
[<c087743c>] (really_probe) from [<c0877a2c>] (driver_probe_device+0x80/0x1c4)
[<c08779ac>] (driver_probe_device) from [<c0877da8>] (__device_attach_driver+0x104/0x11c)
[<c0877ca4>] (__device_attach_driver) from [<c0874dd8>] (bus_for_each_drv+0xa4/0xc8)
[<c0874d34>] (bus_for_each_drv) from [<c08773b0>] (__device_attach+0xf0/0x15c)
[<c08772c0>] (__device_attach) from [<c0877e24>] (device_initial_probe+0x1c/0x20)
[<c0877e08>] (device_initial_probe) from [<c08762f4>] (bus_probe_device+0xdc/0xec)
[<c0876218>] (bus_probe_device) from [<c0876a08>] (deferred_probe_work_func+0xa8/0xd4)
[<c0876960>] (deferred_probe_work_func) from [<c01527c4>] (process_one_work+0x3dc/0x96c)
[<c01523e8>] (process_one_work) from [<c01541e0>] (worker_thread+0x4ec/0x8bc)
[<c0153cf4>] (worker_thread) from [<c015b238>] (kthread+0x230/0x240)
[<c015b008>] (kthread) from [<c01010bc>] (ret_from_fork+0x14/0x38)
Exception stack(0xcf743fb0 to 0xcf743ff8)
3fa0:                                     00000000 00000000 00000000 00000000
3fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
3fe0: 00000000 00000000 00000000 00000000 00000013 00000000

Allocated by task 132:
 kasan_kmalloc.part.1+0x58/0xf4
 kasan_kmalloc+0x90/0xa4
 kmem_cache_alloc_trace+0x90/0x2a0
 __hwmon_device_register+0xbc/0xa7c
 hwmon_device_register_with_info+0xa0/0xa8
 devm_hwmon_device_register_with_info+0x74/0xb4
 lm90_probe+0x414/0x578
 i2c_device_probe+0x35c/0x384
 really_probe+0x290/0x3e4
 driver_probe_device+0x80/0x1c4
 __device_attach_driver+0x104/0x11c
 bus_for_each_drv+0xa4/0xc8
 __device_attach+0xf0/0x15c
 device_initial_probe+0x1c/0x20
 bus_probe_device+0xdc/0xec
 deferred_probe_work_func+0xa8/0xd4
 process_one_work+0x3dc/0x96c
 worker_thread+0x4ec/0x8bc
 kthread+0x230/0x240
 ret_from_fork+0x14/0x38
   (null)

Freed by task 132:
 __kasan_slab_free+0x12c/0x200
 kasan_slab_free+0x14/0x18
 kfree+0x90/0x294
 hwmon_dev_release+0x1c/0x20
 device_release+0x4c/0xe8
 kobject_put+0xac/0x11c
 device_unregister+0x2c/0x30
 __hwmon_device_register+0xa58/0xa7c
 hwmon_device_register_with_info+0xa0/0xa8
 devm_hwmon_device_register_with_info+0x74/0xb4
 lm90_probe+0x414/0x578
 i2c_device_probe+0x35c/0x384
 really_probe+0x290/0x3e4
 driver_probe_device+0x80/0x1c4
 __device_attach_driver+0x104/0x11c
 bus_for_each_drv+0xa4/0xc8
 __device_attach+0xf0/0x15c
 device_initial_probe+0x1c/0x20
 bus_probe_device+0xdc/0xec
 deferred_probe_work_func+0xa8/0xd4
 process_one_work+0x3dc/0x96c
 worker_thread+0x4ec/0x8bc
 kthread+0x230/0x240
 ret_from_fork+0x14/0x38
   (null)

Cc: <stable@vger.kernel.org> # v4.15+
Fixes: 47c332deb8e8 ("hwmon: Deal with errors from the thermal subsystem")
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
6 years agoLinux 4.20-rc1
Linus Torvalds [Sun, 4 Nov 2018 23:37:52 +0000 (15:37 -0800)]
Linux 4.20-rc1

6 years agoMerge tag 'tags/upstream-4.20-rc1' of git://git.infradead.org/linux-ubifs
Linus Torvalds [Sun, 4 Nov 2018 22:46:04 +0000 (14:46 -0800)]
Merge tag 'tags/upstream-4.20-rc1' of git://git.infradead.org/linux-ubifs

Pull UBIFS updates from Richard Weinberger:

 - Full filesystem authentication feature, UBIFS is now able to have the
   whole filesystem structure authenticated plus user data encrypted and
   authenticated.

 - Minor cleanups

* tag 'tags/upstream-4.20-rc1' of git://git.infradead.org/linux-ubifs: (26 commits)
  ubifs: Remove unneeded semicolon
  Documentation: ubifs: Add authentication whitepaper
  ubifs: Enable authentication support
  ubifs: Do not update inode size in-place in authenticated mode
  ubifs: Add hashes and HMACs to default filesystem
  ubifs: authentication: Authenticate super block node
  ubifs: Create hash for default LPT
  ubfis: authentication: Authenticate master node
  ubifs: authentication: Authenticate LPT
  ubifs: Authenticate replayed journal
  ubifs: Add auth nodes to garbage collector journal head
  ubifs: Add authentication nodes to journal
  ubifs: authentication: Add hashes to index nodes
  ubifs: Add hashes to the tree node cache
  ubifs: Create functions to embed a HMAC in a node
  ubifs: Add helper functions for authentication support
  ubifs: Add separate functions to init/crc a node
  ubifs: Format changes for authentication support
  ubifs: Store read superblock node
  ubifs: Drop write_node
  ...

6 years agoMerge tag 'nfs-for-4.20-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Sun, 4 Nov 2018 16:20:09 +0000 (08:20 -0800)]
Merge tag 'nfs-for-4.20-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:
 "Highlights include:

  Bugfix:
   - Fix build issues on architectures that don't provide 64-bit cmpxchg

  Cleanups:
   - Fix a spelling mistake"

* tag 'nfs-for-4.20-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFS: fix spelling mistake, EACCESS -> EACCES
  SUNRPC: Use atomic(64)_t for seq_send(64)