Bart Van Assche [Fri, 22 Jun 2018 20:18:09 +0000 (13:18 -0700)]
blk-mq: Fix timeout handling in case the timeout handler returns BLK_EH_DONE
Make sure that RQF_TIMED_OUT is cleared when a request is reused
after a block driver timeout handler has returned BLK_EH_DONE.
Fixes: da6612673988 ("blk-mq: don't time out requests again that are in the timeout handler")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jianchao Wang <jianchao.w.wang@oracle.com>
Cc: Andrew Randrianasulu <randrianasulu@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jan Kara [Mon, 18 Jun 2018 13:46:58 +0000 (15:46 +0200)]
bdi: Fix another oops in wb_workfn()
syzbot is reporting NULL pointer dereference at wb_workfn() [1] due to
wb->bdi->dev being NULL. And Dmitry confirmed that wb->state was
WB_shutting_down after wb->bdi->dev became NULL. This indicates that
unregister_bdi() failed to call wb_shutdown() on one of wb objects.
The problem is in cgwb_bdi_unregister() which does cgwb_kill() and thus
drops bdi's reference to wb structures before going through the list of
wbs again and calling wb_shutdown() on each of them. This way the loop
iterating through all wbs can easily miss a wb if that wb has already
passed through cgwb_remove_from_bdi_list() called from wb_shutdown()
from cgwb_release_workfn() and as a result fully shutdown bdi although
wb_workfn() for this wb structure is still running. In fact there are
also other ways cgwb_bdi_unregister() can race with
cgwb_release_workfn() leading e.g. to use-after-free issues:
CPU1 CPU2
cgwb_bdi_unregister()
cgwb_kill(*slot);
cgwb_release()
queue_work(cgwb_release_wq, &wb->release_work);
cgwb_release_workfn()
wb = list_first_entry(&bdi->wb_list, ...)
spin_unlock_irq(&cgwb_lock);
wb_shutdown(wb);
...
kfree_rcu(wb, rcu);
wb_shutdown(wb); -> oops use-after-free
We solve these issues by synchronizing writeback structure shutdown from
cgwb_bdi_unregister() with cgwb_release_workfn() using a new mutex. That
way we also no longer need synchronization using WB_shutting_down as the
mutex provides it for CONFIG_CGROUP_WRITEBACK case and without
CONFIG_CGROUP_WRITEBACK wb_shutdown() can be called only once from
bdi_unregister().
Reported-by: syzbot <syzbot+4a7438e774b21ddd8eca@syzkaller.appspotmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Geert Uytterhoeven [Fri, 22 Jun 2018 11:05:35 +0000 (13:05 +0200)]
lightnvm: Remove depends on HAS_DMA in case of platform dependency
Remove dependencies on HAS_DMA where a Kconfig symbol depends on another
symbol that implies HAS_DMA, and, optionally, on "|| COMPILE_TEST".
In most cases this other symbol is an architecture or platform specific
symbol, or PCI.
Generic symbols and drivers without platform dependencies keep their
dependencies on HAS_DMA, to prevent compiling subsystems or drivers that
cannot work anyway.
This simplifies the dependencies, and allows to improve compile-testing.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jens Axboe [Fri, 22 Jun 2018 14:45:29 +0000 (08:45 -0600)]
Merge branch 'nvme-4.18' of git://git.infradead.org/nvme into for-linus
Pull NVMe fixes from Christoph:
"Various relatively small fixes, mostly to fix error handling of various
sorts."
* 'nvme-4.18' of git://git.infradead.org/nvme:
nvme-pci: limit max IO size and segments to avoid high order allocations
nvme-pci: move nvme_kill_queues to nvme_remove_dead_ctrl
nvme-fc: release io queues to allow fast fail
nvmet: reset keep alive timer in controller enable
nvme-rdma: don't override opts->queue_size
nvme-rdma: Fix command completion race at error recovery
nvme-rdma: fix possible free of a non-allocated async event buffer
nvme-rdma: fix possible double free condition when failing to create a controller
Jens Axboe [Thu, 21 Jun 2018 15:49:37 +0000 (09:49 -0600)]
nvme-pci: limit max IO size and segments to avoid high order allocations
nvme requires an sg table allocation for each request. If the request
is large, then the allocation can become quite large. For instance,
with our default software settings of 1280KB IO size, we'll need
10248 bytes of sg table. That turns into a 2nd order allocation,
which we can't always guarantee. If we fail the allocation, blk-mq
will retry it later. But there's no guarantee that we'll EVER be
able to allocate that much contigious memory.
Limit the IO size such that we never need more than a single page
of memory. That's a lot faster and more reliable. Then back that
allocation with a mempool, so that we know we'll always be able
to succeed the allocation at some point.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Jianchao Wang [Wed, 20 Jun 2018 05:42:22 +0000 (13:42 +0800)]
nvme-pci: move nvme_kill_queues to nvme_remove_dead_ctrl
There is race between nvme_remove and nvme_reset_work that can
lead to io hang.
nvme_remove nvme_reset_work
-> nvme_remove_dead_ctrl
-> nvme_dev_disable
-> quiesce request_queue
-> queue remove_work
-> cancel_work_sync reset_work
-> nvme_remove_namespaces
-> splice ctrl->namespaces
nvme_remove_dead_ctrl_work
-> nvme_kill_queues
-> nvme_ns_remove do nothing
-> blk_cleanup_queue
-> blk_freeze_queue
Finally, the request_queue is quiesced state when wait freeze,
we will get io hang here. To fix it, move the nvme_kill_queues
from nvme_remove_dead_ctrl_work to nvme_remove_dead_ctrl.
Suggested-by: Keith Busch <keith.busch@linux.intel.com>
Signed-off-by: Jianchao Wang <jianchao.w.wang@oracle.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
James Smart [Wed, 20 Jun 2018 14:44:12 +0000 (07:44 -0700)]
nvme-fc: release io queues to allow fast fail
Rather than leaving io queues quiesced after tearing down an association,
restart them. This allows ios to be replayed, with fastfail ios terminating
and non-fastfail getting into loops of retry.
This follows rdma's lead.
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Sagi Grimberg <sagi@grimber.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Doron Roberts-Kedes [Fri, 15 Jun 2018 21:05:32 +0000 (14:05 -0700)]
nbd: Add the nbd NBD_DISCONNECT_ON_CLOSE config flag.
If NBD_DISCONNECT_ON_CLOSE is set on a device, then the driver will
issue a disconnect from nbd_release if the device has no remaining
bdev->bd_openers.
Fix ret val so reconfigure with only setting the flag succeeds.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Doron Roberts-Kedes <doronrk@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Dan Carpenter [Wed, 20 Jun 2018 10:41:51 +0000 (13:41 +0300)]
block: sed-opal: Fix a couple off by one bugs
resp->num is the number of tokens in resp->tok[]. It gets set in
response_parse(). So if n == resp->num then we're reading beyond the
end of the data.
Fixes: 455a7b238cd6 ("block: Add Sed-opal library")
Reviewed-by: Scott Bauer <scott.bauer@intel.com>
Tested-by: Scott Bauer <scott.bauer@intel.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Dan Carpenter [Wed, 20 Jun 2018 10:45:05 +0000 (13:45 +0300)]
blk-mq-debugfs: Off by one in blk_mq_rq_state_name()
If rq_state == ARRAY_SIZE() then we read one element beyond the end of
the blk_mq_rq_state_name_array[] array.
Fixes: ec6dcf63c55c ("blk-mq-debugfs: Show more request state information")
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Max Gurtuvoy [Tue, 19 Jun 2018 12:45:33 +0000 (15:45 +0300)]
nvmet: reset keep alive timer in controller enable
Controllers that are not yet enabled should not really enforce keep alive
timeouts, but we still want to track a timeout and cleanup in case a host
died before it enabled the controller. Hence, simply reset the keep
alive timer when the controller is enabled.
Suggested-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Sagi Grimberg [Tue, 19 Jun 2018 12:34:13 +0000 (15:34 +0300)]
nvme-rdma: don't override opts->queue_size
That is user argument, and theoretically controller limits can change
over time (over reconnects/resets). Instead, use the sqsize controller
attribute to check queue depth boundaries and use it to the tagset
allocation.
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Israel Rukshin [Tue, 19 Jun 2018 12:34:11 +0000 (15:34 +0300)]
nvme-rdma: Fix command completion race at error recovery
The race is between completing the request at error recovery work and
rdma completions. If we cancel the request before getting the good
rdma completion we get a NULL deref of the request MR at
nvme_rdma_process_nvme_rsp().
When Canceling the request we return its mr to the mr pool (set mr to
NULL) and also unmap its data. Canceling the requests while the rdma
queues are active is not safe. Because rdma queues are active and we
get good rdma completions that can use the mr pointer which may be NULL.
Completing the request too soon may lead also to performing DMA to/from
user buffers which might have been already unmapped.
The commit fixes the race by draining the QP before starting the abort
commands mechanism.
Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Sagi Grimberg [Tue, 19 Jun 2018 12:34:10 +0000 (15:34 +0300)]
nvme-rdma: fix possible free of a non-allocated async event buffer
If nvme_rdma_configure_admin_queue fails before we allocated
the async event buffer, we will falsly free it because
nvme_rdma_free_queue is freeing it. Fix it by allocating the buffer right
after nvme_rdma_alloc_queue and free it right before nvme_rdma_queue_free
to maintain orderly reverse cleanup sequence.
Reported-by: Israel Rukshin <israelr@mellanox.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Sagi Grimberg [Tue, 19 Jun 2018 12:34:09 +0000 (15:34 +0300)]
nvme-rdma: fix possible double free condition when failing to create a controller
Failures after nvme_init_ctrl will defer resource cleanups to .free_ctrl
when the reference is released, hence we should not free the controller
queues for these failures.
Fix that by moving controller queues allocation before controller
initialization and correctly freeing them for failures before
initialization and skip them for failures after initialization.
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Bart Van Assche [Tue, 19 Jun 2018 17:26:40 +0000 (10:26 -0700)]
Revert "block: Add warning for bi_next not NULL in bio_endio()"
Commit
0ba99ca4838b ("block: Add warning for bi_next not NULL in
bio_endio()") breaks the dm driver. end_clone_bio() detects whether
or not a bio is the last bio associated with a request by checking
the .bi_next field. Commit
0ba99ca4838b clears that field before
end_clone_bio() has had a chance to inspect that field. Hence revert
commit
0ba99ca4838b.
This patch avoids that KASAN reports the following complaint when
running the srp-test software (srp-test/run_tests -c -d -r 10 -t 02-mq):
==================================================================
BUG: KASAN: use-after-free in bio_advance+0x11b/0x1d0
Read of size 4 at addr
ffff8801300e06d0 by task ksoftirqd/0/9
CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 4.18.0-rc1-dbg+ #1
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.0.0-prebuilt.qemu-project.org 04/01/2014
Call Trace:
dump_stack+0xa4/0xf5
print_address_description+0x6f/0x270
kasan_report+0x241/0x360
__asan_load4+0x78/0x80
bio_advance+0x11b/0x1d0
blk_update_request+0xa7/0x5b0
scsi_end_request+0x56/0x320 [scsi_mod]
scsi_io_completion+0x7d6/0xb20 [scsi_mod]
scsi_finish_command+0x1c0/0x280 [scsi_mod]
scsi_softirq_done+0x19a/0x230 [scsi_mod]
blk_mq_complete_request+0x160/0x240
scsi_mq_done+0x50/0x1a0 [scsi_mod]
srp_recv_done+0x515/0x1330 [ib_srp]
__ib_process_cq+0xa0/0xf0 [ib_core]
ib_poll_handler+0x38/0xa0 [ib_core]
irq_poll_softirq+0xe8/0x1f0
__do_softirq+0x128/0x60d
run_ksoftirqd+0x3f/0x60
smpboot_thread_fn+0x352/0x460
kthread+0x1c1/0x1e0
ret_from_fork+0x24/0x30
Allocated by task 1918:
save_stack+0x43/0xd0
kasan_kmalloc+0xad/0xe0
kasan_slab_alloc+0x11/0x20
kmem_cache_alloc+0xfe/0x350
mempool_alloc_slab+0x15/0x20
mempool_alloc+0xfb/0x270
bio_alloc_bioset+0x244/0x350
submit_bh_wbc+0x9c/0x2f0
__block_write_full_page+0x299/0x5a0
block_write_full_page+0x16b/0x180
blkdev_writepage+0x18/0x20
__writepage+0x42/0x80
write_cache_pages+0x376/0x8a0
generic_writepages+0xbe/0x110
blkdev_writepages+0xe/0x10
do_writepages+0x9b/0x180
__filemap_fdatawrite_range+0x178/0x1c0
file_write_and_wait_range+0x59/0xc0
blkdev_fsync+0x46/0x80
vfs_fsync_range+0x66/0x100
do_fsync+0x3d/0x70
__x64_sys_fsync+0x21/0x30
do_syscall_64+0x77/0x230
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Freed by task 9:
save_stack+0x43/0xd0
__kasan_slab_free+0x137/0x190
kasan_slab_free+0xe/0x10
kmem_cache_free+0xd3/0x380
mempool_free_slab+0x17/0x20
mempool_free+0x63/0x160
bio_free+0x81/0xa0
bio_put+0x59/0x60
end_bio_bh_io_sync+0x5d/0x70
bio_endio+0x1a7/0x360
blk_update_request+0xd0/0x5b0
end_clone_bio+0xa3/0xd0 [dm_mod]
bio_endio+0x1a7/0x360
blk_update_request+0xd0/0x5b0
scsi_end_request+0x56/0x320 [scsi_mod]
scsi_io_completion+0x7d6/0xb20 [scsi_mod]
scsi_finish_command+0x1c0/0x280 [scsi_mod]
scsi_softirq_done+0x19a/0x230 [scsi_mod]
blk_mq_complete_request+0x160/0x240
scsi_mq_done+0x50/0x1a0 [scsi_mod]
srp_recv_done+0x515/0x1330 [ib_srp]
__ib_process_cq+0xa0/0xf0 [ib_core]
ib_poll_handler+0x38/0xa0 [ib_core]
irq_poll_softirq+0xe8/0x1f0
__do_softirq+0x128/0x60d
The buggy address belongs to the object at
ffff8801300e0640
which belongs to the cache bio-0 of size 200
The buggy address is located 144 bytes inside of
200-byte region [
ffff8801300e0640,
ffff8801300e0708)
The buggy address belongs to the page:
page:
ffffea0004c03800 count:1 mapcount:0 mapping:
ffff88015a563a00 index:0x0 compound_mapcount: 0
flags: 0x8000000000008100(slab|head)
raw:
8000000000008100 dead000000000100 dead000000000200 ffff88015a563a00
raw:
0000000000000000 0000000000330033 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8801300e0580: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc
ffff8801300e0600: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
>
ffff8801300e0680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8801300e0700: fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8801300e0780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
Cc: Kent Overstreet <kent.overstreet@gmail.com>
Fixes: 0ba99ca4838b ("block: Add warning for bi_next not NULL in bio_endio()")
Acked-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Christoph Hellwig [Tue, 19 Jun 2018 16:40:14 +0000 (18:40 +0200)]
block: fix timeout changes for legacy request drivers
blk_mq_complete_request can only be called for blk-mq drivers, but when
removing the BLK_EH_HANDLED return value, two legacy request timeout
methods incorrectly got switched to call blk_mq_complete_request.
Call __blk_complete_request instead to reinstance the previous behavior.
For that __blk_complete_request needs to be exported.
Fixes: 1fc2b62e ("scsi_transport_fc: complete requests from ->timeout")
Fixes: 0df0bb08 ("null_blk: complete requests from ->timeout")
Reported-by: Jianchao Wang <jianchao.w.wang@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Anatoliy Glagolev [Wed, 13 Jun 2018 21:38:51 +0000 (15:38 -0600)]
bsg: fix race of bsg_open and bsg_unregister
The existing implementation allows races between bsg_unregister and
bsg_open paths. bsg_unregister and request_queue cleanup and deletion
may start and complete right after bsg_get_device (in bsg_open path)
retrieves bsg_class_device and releases the mutex. Then bsg_open path
touches freed memory of bsg_class_device and request_queue.
One possible fix is to hold the mutex all the way through bsg_get_device
instead of releasing it after bsg_class_device retrieval.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-Off-By: Anatoliy Glagolev <glagolig@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Christoph Hellwig [Fri, 15 Jun 2018 11:55:07 +0000 (13:55 +0200)]
block: remov blk_queue_invalidate_tags
This function is entirely unused, so remove it and the tag_queue_busy
member of struct request_queue.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jens Axboe [Fri, 15 Jun 2018 14:11:05 +0000 (08:11 -0600)]
Merge branch 'nvme-4.18' of git://git.infradead.org/nvme into for-linus
Pull NVMe fixes from Christoph:
"Fix various little regressions introduced in this merge window, plus
a rework of the fibre channel connect and reconnect path to share the
code instead of having separate sets of bugs. Last but not least a
trivial trace point addition from Hannes."
* 'nvme-4.18' of git://git.infradead.org/nvme:
nvme-fabrics: fix and refine state checks in __nvmf_check_ready
nvme-fabrics: handle the admin-only case properly in nvmf_check_ready
nvme-fabrics: refactor queue ready check
blk-mq: remove blk_mq_tagset_iter
nvme: remove nvme_reinit_tagset
nvme-fc: fix nulling of queue data on reconnect
nvme-fc: remove reinit_request routine
nvme-fc: change controllers first connect to use reconnect path
nvme: don't rely on the changed namespace list log
nvmet: free smart-log buffer after use
nvme-rdma: fix error flow during mapping request data
nvme: add bio remapping tracepoint
nvme: fix NULL pointer dereference in nvme_init_subsystem
Christoph Hellwig [Mon, 11 Jun 2018 15:41:11 +0000 (17:41 +0200)]
nvme-fabrics: fix and refine state checks in __nvmf_check_ready
- make sure we only allow internally generates commands in any non-live
state
- only allow connect commands on non-live queues when actually in the
new or connecting states
- treat all other non-live, non-dead states the same as a default
cach-all
This fixes a regression where we could not shutdown a controller
orderly as we didn't allow the internal generated Property Set
command, and also ensures we don't accidentally let a Connect command
through in the wrong state.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: James Smart <james.smart@broadcom.com>
Christoph Hellwig [Mon, 11 Jun 2018 15:37:23 +0000 (17:37 +0200)]
nvme-fabrics: handle the admin-only case properly in nvmf_check_ready
In the ADMIN_ONLY state we don't have any I/O queues, but we should accept
all admin commands without further checks.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: James Smart <james.smart@broadcom.com>
Christoph Hellwig [Mon, 11 Jun 2018 15:34:06 +0000 (17:34 +0200)]
nvme-fabrics: refactor queue ready check
Move the is_connected check to the fibre channel transport, as it has no
meaning for other transports. To facilitate this split out a new
nvmf_fail_nonready_command helper that is called by the transport when
it is asked to handle a command on a queue that is not ready.
Also avoid a function call for the queue live fast path by inlining
the check.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: James Smart <james.smart@broadcom.com>
Christoph Hellwig [Thu, 14 Jun 2018 12:26:47 +0000 (14:26 +0200)]
blk-mq: remove blk_mq_tagset_iter
Unused now that nvme stopped using it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Christoph Hellwig [Thu, 14 Jun 2018 12:25:55 +0000 (14:25 +0200)]
nvme: remove nvme_reinit_tagset
Unused now that all transports stopped using it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
James Smart [Wed, 13 Jun 2018 21:07:38 +0000 (14:07 -0700)]
nvme-fc: fix nulling of queue data on reconnect
The reconnect path is calling the init routines to clear a queue
structure. But the queue structure has state that perhaps needs
to persist as long as the controller is live.
Remove the nvme_fc_init_queue() calls on reconnect.
The nvme_fc_free_queue() calls will clear state bits and reset
any relevant queue state for a new connection.
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
James Smart [Wed, 13 Jun 2018 21:07:36 +0000 (14:07 -0700)]
nvme-fc: remove reinit_request routine
The reinit_request routine is not necessary. Remove support for the
op callback.
As all that nvme_reinit_tagset() does is itterate and call the
reinit routine, it too has no purpose. Remove the call.
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Christoph Hellwig [Thu, 14 Jun 2018 11:58:45 +0000 (13:58 +0200)]
blk-mq: don't time out requests again that are in the timeout handler
We can currently call the timeout handler again on a request that has
already been handed over to the timeout handler. Prevent that with a new
flag.
Fixes: 12f5b931 ("blk-mq: Remove generation seqeunce")
Reported-by: Andrew Randrianasulu <randrianasulu@gmail.com>
Tested-by: Andrew Randrianasulu <randrianasulu@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
James Smart [Wed, 13 Jun 2018 21:07:37 +0000 (14:07 -0700)]
nvme-fc: change controllers first connect to use reconnect path
Current code follows the framework that has been in the transports
from the beginning where initial link-side controller connect occurs
as part of "creating the controller". Thus that first connect fully
talks to the controller and obtains values that can then be used in
for blk-mq setup, etc. It also means that everything about the
controller is fully know before the "create controller" call returns.
This has several weaknesses:
- The initial create_ctrl call made by the cli will block for a long
time as wire transactions are performed synchronously. This delay
becomes longer if errors occur or connectivity is lost and retries
need to be performed.
- Code wise, it means there is a separate connect path for initial
controller connect vs the (same) steps used in the reconnect path.
- And as there's separate paths, it means there's separate error
handling and retry logic. It also plays havoc with the NEW state
(should transition out of it after successful initial connect) vs
the RESETTING and CONNECTING (reconnect) states that want to be
transitioned to on error.
- As there's separate paths, to recover from errors and disruptions,
it requires separate recovery/retry paths as well and can severely
convolute the controller state.
This patch reworks the fc transport to use the same connect paths
for the initial connection as it uses for reconnect. This makes a
single path for error recovery and handling.
This patch:
- Removes the driving of the initial connect and replaces it with
a state transition to CONNECTING and initiating the reconnect
thread. A dummy state transition of RESETTING had to be traversed
as a direct transtion of NEW->CONNECTING is not allowed. Given
that the controller is "new", the RESETTING transition is a simple
no-op. Once in the reconnecting thread, the normal behaviors of
ctrl_loss_tmo (max_retries * connect_delay) and dev_loss_tmo will
apply before the controller is torn down.
- Only if the state transitions couldn't be traversed and the
reconnect thread not scheduled, will the controller be torn down
while in create_ctrl.
- The prior code used the controller state of NEW to indicate
whether request queues had been initialized or not. For the admin
queue, the request queue is always created, so there's no need to
check a state. For IO queues, change to tracking whether a successful
io request queue create has occurred (e.g. 1st successful connect).
- The initial controller id is initialized to the dynamic controller
id used in the initial connect message. It will be overwritten by
the real controller id once the controller is connected on the wire.
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Christoph Hellwig [Thu, 7 Jun 2018 11:47:33 +0000 (13:47 +0200)]
nvme: don't rely on the changed namespace list log
Don't optimize our namespace rescan based on the changed namespace list
log page as userspace might have changed the content through reading
it.
Suggested-by: Keith Busch <keith.busch@linux.intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@linux.intel.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Chaitanya Kulkarni [Mon, 11 Jun 2018 07:20:24 +0000 (03:20 -0400)]
nvmet: free smart-log buffer after use
Free smart-log buffer allocated in the function after use.
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Max Gurtovoy [Sun, 10 Jun 2018 13:58:29 +0000 (16:58 +0300)]
nvme-rdma: fix error flow during mapping request data
After dma mapping the sgl, we map the sgl to nvme sgl descriptor. In case
of failure during the last mapping we never dma unmap the sgl.
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Hannes Reinecke [Thu, 7 Jun 2018 08:38:47 +0000 (10:38 +0200)]
nvme: add bio remapping tracepoint
Adding a tracepoint to trace bio remapping for native nvme multipath.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Israel Rukshin [Sun, 10 Jun 2018 10:31:10 +0000 (10:31 +0000)]
nvme: fix NULL pointer dereference in nvme_init_subsystem
When using nvme-pci driver the nvmf_ctrl_options is NULL.
There is no need to check for discovery_nqn flag at non-fabrics controller.
Fixes: 181303d0 ("nvme-fabrics: allow duplicate connections to the discovery controller")
Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Roman Pen [Sun, 10 Jun 2018 20:38:24 +0000 (22:38 +0200)]
blk-mq: reinit q->tag_set_list entry only after grace period
It is not allowed to reinit q->tag_set_list list entry while RCU grace
period has not completed yet, otherwise the following soft lockup in
blk_mq_sched_restart() happens:
[ 1064.252652] watchdog: BUG: soft lockup - CPU#12 stuck for 23s! [fio:9270]
[ 1064.254445] task:
ffff99b912e8b900 task.stack:
ffffa6d54c758000
[ 1064.254613] RIP: 0010:blk_mq_sched_restart+0x96/0x150
[ 1064.256510] Call Trace:
[ 1064.256664] <IRQ>
[ 1064.256824] blk_mq_free_request+0xea/0x100
[ 1064.256987] msg_io_conf+0x59/0xd0 [ibnbd_client]
[ 1064.257175] complete_rdma_req+0xf2/0x230 [ibtrs_client]
[ 1064.257340] ? ibtrs_post_recv_empty+0x4d/0x70 [ibtrs_core]
[ 1064.257502] ibtrs_clt_rdma_done+0xd1/0x1e0 [ibtrs_client]
[ 1064.257669] ib_create_qp+0x321/0x380 [ib_core]
[ 1064.257841] ib_process_cq_direct+0xbd/0x120 [ib_core]
[ 1064.258007] irq_poll_softirq+0xb7/0xe0
[ 1064.258165] __do_softirq+0x106/0x2a2
[ 1064.258328] irq_exit+0x92/0xa0
[ 1064.258509] do_IRQ+0x4a/0xd0
[ 1064.258660] common_interrupt+0x7a/0x7a
[ 1064.258818] </IRQ>
Meanwhile another context frees other queue but with the same set of
shared tags:
[ 1288.201183] INFO: task bash:5910 blocked for more than 180 seconds.
[ 1288.201833] bash D 0 5910 5820 0x00000000
[ 1288.202016] Call Trace:
[ 1288.202315] schedule+0x32/0x80
[ 1288.202462] schedule_timeout+0x1e5/0x380
[ 1288.203838] wait_for_completion+0xb0/0x120
[ 1288.204137] __wait_rcu_gp+0x125/0x160
[ 1288.204287] synchronize_sched+0x6e/0x80
[ 1288.204770] blk_mq_free_queue+0x74/0xe0
[ 1288.204922] blk_cleanup_queue+0xc7/0x110
[ 1288.205073] ibnbd_clt_unmap_device+0x1bc/0x280 [ibnbd_client]
[ 1288.205389] ibnbd_clt_unmap_dev_store+0x169/0x1f0 [ibnbd_client]
[ 1288.205548] kernfs_fop_write+0x109/0x180
[ 1288.206328] vfs_write+0xb3/0x1a0
[ 1288.206476] SyS_write+0x52/0xc0
[ 1288.206624] do_syscall_64+0x68/0x1d0
[ 1288.206774] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
What happened is the following:
1. There are several MQ queues with shared tags.
2. One queue is about to be freed and now task is in
blk_mq_del_queue_tag_set().
3. Other CPU is in blk_mq_sched_restart() and loops over all queues in
tag list in order to find hctx to restart.
Because linked list entry was modified in blk_mq_del_queue_tag_set()
without proper waiting for a grace period, blk_mq_sched_restart()
never ends, spining in list_for_each_entry_rcu_rr(), thus soft lockup.
Fix is simple: reinit list entry after an RCU grace period elapsed.
Fixes: Fixes: 705cda97ee3a ("blk-mq: Make it safe to use RCU to iterate over blk_mq_tag_set.tag_list")
Cc: stable@vger.kernel.org
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: linux-block@vger.kernel.org
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Roman Pen <roman.penyaev@profitbricks.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Linus Torvalds [Mon, 11 Jun 2018 02:25:23 +0000 (19:25 -0700)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Fix several bpfilter/UMH bugs, in particular make the UMH build not
depend upon X86 specific Kconfig symbols. From Alexei Starovoitov.
2) Fix handling of modified context pointer in bpf verifier, from
Daniel Borkmann.
3) Kill regression in ifdown/ifup sequences for hv_netvsc driver, from
Dexuan Cui.
4) When the bonding primary member name changes, we have to re-evaluate
the bond->force_primary setting, from Xiangning Yu.
5) Eliminate possible padding beyone end of SKB in cdc_ncm driver, from
Bjørn Mork.
6) RX queue length reported for UDP sockets in procfs and socket diag
are inaccurate, from Paolo Abeni.
7) Fix br_fdb_find_port() locking, from Petr Machata.
8) Limit sk_rcvlowat values properly in TCP, from Soheil Hassas
Yeganeh.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (23 commits)
tcp: limit sk_rcvlowat by the maximum receive buffer
net: phy: dp83822: use BMCR_ANENABLE instead of BMSR_ANEGCAPABLE for DP83620
socket: close race condition between sock_close() and sockfs_setattr()
net: bridge: Fix locking in br_fdb_find_port()
udp: fix rx queue len reported by diag and proc interface
cdc_ncm: avoid padding beyond end of skb
net/sched: act_simple: fix parsing of TCA_DEF_DATA
net: fddi: fix a possible null-ptr-deref
net: aquantia: fix unsigned numvecs comparison with less than zero
net: stmmac: fix build failure due to missing COMMON_CLK dependency
bpfilter: fix race in pipe access
bpf, xdp: fix crash in xdp_umem_unaccount_pages
xsk: Fix umem fill/completion queue mmap on 32-bit
tools/bpf: fix selftest get_cgroup_id_user
bpfilter: fix OUTPUT_FORMAT
umh: fix race condition
net: mscc: ocelot: Fix uninitialized error in ocelot_netdevice_event()
bonding: re-evaluate force_primary when the primary slave name changes
ip_tunnel: Fix name string concatenate in __ip_tunnel_create()
hv_netvsc: Fix a network regression after ifdown/ifup
...
Linus Torvalds [Sun, 10 Jun 2018 23:13:24 +0000 (16:13 -0700)]
Merge tag 'rtc-4.18' of git://git./linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"Setting the supported range from drivers for RTCs failing soon has
started. A few fixes are developed along the way. Some drivers have
been switched to SPDX by their maintainers.
Subsystem:
- rework of the rtc-test driver which allows to test the core more
thoroughly
- rtc_set_alarm() now fails early when alarms are not supported
Drivers:
- mktime() is now replaced by mktime64()
- RTC range added for 88pm80x, ab-b5ze-s3, at91rm9200,
brcmstb-waketimer, ds1685, ftrtc010, ls1x, mxc_v2, rx8581, sprd,
st-lpc, tps6586x, tps65910 and vr41xx
- fixed a possible race condition in probe functions
- pxa: fix the probe function that is broken since v4.3
- stm32: now supports stm32mp1"
* tag 'rtc-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (78 commits)
rtc: pxa: fix probe function
rtc: cros-ec: Switch to SPDX identifier.
rtc: cros-ec: Make license text and module license match.
rtc: ensure rtc_set_alarm fails when alarms are not supported
rtc: test: remove alarm support from the first device
rtc: test: convert to devm_rtc_allocate_device
rtc: ftrtc010: let the core handle range
rtc: ftrtc010: handle dates after 2106
rtc: ftrtc010: switch to devm_rtc_allocate_device
rtc: mrst: switch to devm functions
rtc: sunxi: fix possible race condition
rtc: test: remove irq sysfs file
rtc: test: emulate alarms using timers
rtc: test: store time as an offset to system time
rtc: test: allow registering many devices
rtc: test: remove useless proc info
rtc: ds1685: Add range
rtc: ds1685: fix possible race condition
rtc: sprd: Add new RTC power down check method
rtc: sun6i: Fix bit_idx value for clk_register_gate
...
Linus Torvalds [Sun, 10 Jun 2018 22:52:09 +0000 (15:52 -0700)]
Merge tag 'upstream-4.18-rc1' of git://git.infradead.org/linux-ubifs
Pull UBI and UBIFS updates from Richard Weinberger:
- the UBI on-disk format header file is now dual licensed
- new way to detect Fastmap problems during runtime
- bugfix for Fastmap
- minor updates for UBIFS (spelling, comments, vm_fault_t, ...)
* tag 'upstream-4.18-rc1' of git://git.infradead.org/linux-ubifs:
mtd: ubi: Update ubi-media.h to dual license
ubi: fastmap: Detect EBA mismatches on-the-fly
ubi: fastmap: Check each mapping only once
ubi: fastmap: Correctly handle interrupted erasures in EBA
ubi: fastmap: Cancel work upon detach
ubifs: lpt: Fix wrong pnode number range in comment
ubifs: gc: Fix typo
ubifs: log: Some spelling fixes
ubifs: Spelling fix someting -> something
ubifs: journal: Remove wrong comment
ubifs: remove set but never used variable
ubifs, xattr: remove misguided quota flags
fs: ubifs: Adding new return type vm_fault_t
Soheil Hassas Yeganeh [Sat, 9 Jun 2018 02:47:10 +0000 (22:47 -0400)]
tcp: limit sk_rcvlowat by the maximum receive buffer
The user-provided value to setsockopt(SO_RCVLOWAT) can be
larger than the maximum possible receive buffer. Such values
mute POLLIN signals on the socket which can stall progress
on the socket.
Limit the user-provided value to half of the maximum receive
buffer, i.e., half of sk_rcvbuf when the receive buffer size
is set by the user, or otherwise half of sysctl_tcp_rmem[2].
Fixes: d1361840f8c5 ("tcp: fix SO_RCVLOWAT and RCVBUF autotuning")
Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sun, 10 Jun 2018 20:01:12 +0000 (13:01 -0700)]
Merge tag 'scsi-misc' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"This is mostly updates to the usual drivers: ufs, qedf, mpt3sas, lpfc,
xfcp, hisi_sas, cxlflash, qla2xxx.
In the absence of Nic, we're also taking target updates which are
mostly minor except for the tcmu refactor.
The only real core change to worry about is the removal of high page
bouncing (in sas, storvsc and iscsi). This has been well tested and no
problems have shown up so far"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (268 commits)
scsi: lpfc: update driver version to 12.0.0.4
scsi: lpfc: Fix port initialization failure.
scsi: lpfc: Fix 16gb hbas failing cq create.
scsi: lpfc: Fix crash in blk_mq layer when executing modprobe -r lpfc
scsi: lpfc: correct oversubscription of nvme io requests for an adapter
scsi: lpfc: Fix MDS diagnostics failure (Rx < Tx)
scsi: hisi_sas: Mark PHY as in reset for nexus reset
scsi: hisi_sas: Fix return value when get_free_slot() failed
scsi: hisi_sas: Terminate STP reject quickly for v2 hw
scsi: hisi_sas: Add v2 hw force PHY function for internal ATA command
scsi: hisi_sas: Include TMF elements in struct hisi_sas_slot
scsi: hisi_sas: Try wait commands before before controller reset
scsi: hisi_sas: Init disks after controller reset
scsi: hisi_sas: Create a scsi_host_template per HW module
scsi: hisi_sas: Reset disks when discovered
scsi: hisi_sas: Add LED feature for v3 hw
scsi: hisi_sas: Change common allocation mode of device id
scsi: hisi_sas: change slot index allocation mode
scsi: hisi_sas: Introduce hisi_sas_phy_set_linkrate()
scsi: hisi_sas: fix a typo in hisi_sas_task_prep()
...
Alvaro Gamez Machado [Fri, 8 Jun 2018 10:23:39 +0000 (12:23 +0200)]
net: phy: dp83822: use BMCR_ANENABLE instead of BMSR_ANEGCAPABLE for DP83620
DP83620 register set is compatible with the DP83848, but it also supports
100base-FX. When the hardware is configured such as that fiber mode is
enabled, autonegotiation is not possible.
The chip, however, doesn't expose this information via BMSR_ANEGCAPABLE.
Instead, this bit is always set high, even if the particular hardware
configuration makes it so that auto negotiation is not possible [1]. Under
these circumstances, the phy subsystem keeps trying for autonegotiation to
happen, without success.
Hereby, we inspect BMCR_ANENABLE bit after genphy_config_init, which on
reset is set to 0 when auto negotiation is disabled, and so we use this
value instead of BMSR_ANEGCAPABLE.
[1] https://e2e.ti.com/support/interface/ethernet/f/903/p/697165/
2571170
Signed-off-by: Alvaro Gamez Machado <alvaro.gamez@hazent.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cong Wang [Thu, 7 Jun 2018 20:39:49 +0000 (13:39 -0700)]
socket: close race condition between sock_close() and sockfs_setattr()
fchownat() doesn't even hold refcnt of fd until it figures out
fd is really needed (otherwise is ignored) and releases it after
it resolves the path. This means sock_close() could race with
sockfs_setattr(), which leads to a NULL pointer dereference
since typically we set sock->sk to NULL in ->release().
As pointed out by Al, this is unique to sockfs. So we can fix this
in socket layer by acquiring inode_lock in sock_close() and
checking against NULL in sockfs_setattr().
sock_release() is called in many places, only the sock_close()
path matters here. And fortunately, this should not affect normal
sock_close() as it is only called when the last fd refcnt is gone.
It only affects sock_close() with a parallel sockfs_setattr() in
progress, which is not common.
Fixes: 86741ec25462 ("net: core: Add a UID field to struct sock.")
Reported-by: shankarapailoor <shankarapailoor@gmail.com>
Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Lorenzo Colitti <lorenzo@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sun, 10 Jun 2018 17:53:31 +0000 (10:53 -0700)]
Merge tag '4.18-fixes-smb3' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
- one smb3 (ACL related) fix for stable
- one SMB3 security enhancement (when mounting -t smb3 forbid less
secure dialects)
- some RDMA and compounding fixes
* tag '4.18-fixes-smb3' of git://git.samba.org/sfrench/cifs-2.6:
cifs: fix a buffer leak in smb2_query_symlink
smb3: do not allow insecure cifs mounts when using smb3
CIFS: Fix NULL ptr deref
CIFS: fix encryption in SMB3.1.1
CIFS: Pass page offset for encrypting
CIFS: Pass page offset for calculating signature
CIFS: SMBD: Support page offset in memory registration
CIFS: SMBD: Support page offset in RDMA recv
CIFS: SMBD: Support page offset in RDMA send
CIFS: When sending data on socket, pass the correct page offset
CIFS: Introduce helper function to get page offset and length in smb_rqst
CIFS: Calculate the correct request length based on page offset and tail size
cifs: For SMB2 security informaion query, check for minimum sized security descriptor instead of sizeof FileAllInformation class
CIFS: Fix signing for SMB2/3
Linus Torvalds [Sun, 10 Jun 2018 17:50:41 +0000 (10:50 -0700)]
Merge tag 'for-linus-
20180610' of git://git.kernel.dk/linux-block
Pull block flush handling fix from Jens Axboe:
"Single fix that we should merge now, fixing a regression in queuing
flush request, accessing request flags after calling the end_request
handler"
* tag 'for-linus-
20180610' of git://git.kernel.dk/linux-block:
block: fix use-after-free in block flush handling
Linus Torvalds [Sun, 10 Jun 2018 17:17:09 +0000 (10:17 -0700)]
Merge branch 'core-rseq-for-linus' of git://git./linux/kernel/git/tip/tip
Pull restartable sequence support from Thomas Gleixner:
"The restartable sequences syscall (finally):
After a lot of back and forth discussion and massive delays caused by
the speculative distraction of maintainers, the core set of
restartable sequences has finally reached a consensus.
It comes with the basic non disputed core implementation along with
support for arm, powerpc and x86 and a full set of selftests
It was exposed to linux-next earlier this week, so it does not fully
comply with the merge window requirements, but there is really no
point to drag it out for yet another cycle"
* 'core-rseq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
rseq/selftests: Provide Makefile, scripts, gitignore
rseq/selftests: Provide parametrized tests
rseq/selftests: Provide basic percpu ops test
rseq/selftests: Provide basic test
rseq/selftests: Provide rseq library
selftests/lib.mk: Introduce OVERRIDE_TARGETS
powerpc: Wire up restartable sequences system call
powerpc: Add syscall detection for restartable sequences
powerpc: Add support for restartable sequences
x86: Wire up restartable sequence system call
x86: Add support for restartable sequences
arm: Wire up restartable sequences system call
arm: Add syscall detection for restartable sequences
arm: Add restartable sequences support
rseq: Introduce restartable sequences system call
uapi/headers: Provide types_32_64.h
Linus Torvalds [Sun, 10 Jun 2018 16:44:53 +0000 (09:44 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 updates and fixes from Thomas Gleixner:
- Fix the (late) fallout from the vector management rework causing
hlist corruption and irq descriptor reference leaks caused by a
missing sanity check.
The straight forward fix triggered another long standing issue to
surface. The pre rework code hid the issue due to being way slower,
but now the chance that user space sees an EBUSY error return when
updating irq affinities is way higher, though quite a bunch of
userspace tools do not handle it properly despite the fact that EBUSY
could be returned for at least 10 years.
It turned out that the EBUSY return can be avoided completely by
utilizing the existing delayed affinity update mechanism for irq
remapped scenarios as well. That's a bit more error handling in the
kernel, but avoids fruitless fingerpointing discussions with tool
developers.
- Decouple PHYSICAL_MASK from AMD SME as its going to be required for
the upcoming Intel memory encryption support as well.
- Handle legacy device ACPI detection properly for newer platforms
- Fix the wrong argument ordering in the vector allocation tracepoint
- Simplify the IDT setup code for the APIC=n case
- Use the proper string helpers in the MTRR code
- Remove a stale unused VDSO source file
- Convert the microcode update lock to a raw spinlock as its used in
atomic context.
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/intel_rdt: Enable CMT and MBM on new Skylake stepping
x86/apic/vector: Print APIC control bits in debugfs
genirq/affinity: Defer affinity setting if irq chip is busy
x86/platform/uv: Use apic_ack_irq()
x86/ioapic: Use apic_ack_irq()
irq_remapping: Use apic_ack_irq()
x86/apic: Provide apic_ack_irq()
genirq/migration: Avoid out of line call if pending is not set
genirq/generic_pending: Do not lose pending affinity update
x86/apic/vector: Prevent hlist corruption and leaks
x86/vector: Fix the args of vector_alloc tracepoint
x86/idt: Simplify the idt_setup_apic_and_irq_gates()
x86/platform/uv: Remove extra parentheses
x86/mm: Decouple dynamic __PHYSICAL_MASK from AMD SME
x86: Mark native_set_p4d() as __always_inline
x86/microcode: Make the late update update_lock a raw lock for RT
x86/mtrr: Convert to use strncpy_from_user() helper
x86/mtrr: Convert to use match_string() helper
x86/vdso: Remove unused file
x86/i8237: Register device based on FADT legacy boot flag
Linus Torvalds [Sun, 10 Jun 2018 16:13:18 +0000 (09:13 -0700)]
Merge branch 'x86-pti-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 pti updates from Thomas Gleixner:
"Three small commits updating the SSB mitigation to take the updated
AMD mitigation variants into account"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/bugs: Switch the selection of mitigation from CPU vendor to CPU features
x86/bugs: Add AMD's SPEC_CTRL MSR usage
x86/bugs: Add AMD's variant of SSB_NO
Linus Torvalds [Sun, 10 Jun 2018 16:04:00 +0000 (09:04 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull more perf tooling updates from Thomas Gleixner:
"Perf tool updates and fixes:
perf stat:
- Display user and system time for workload targets (Jiri Olsa)
perf record:
- Enable arbitrary event names thru name= modifier (Alexey Budankov)
PowerPC:
- Add a python script for hypervisor call statistics (Ravi Bangoria)
Intel PT: (Adrian Hunter)
- Fix sync_switch INTEL_PT_SS_NOT_TRACING
- Fix decoding to accept CBR between FUP and corresponding TIP
- Fix MTC timing after overflow
- Fix "Unexpected indirect branch" error
perf test:
- record+probe_libc_inet_pton:
- To get the symbol table for dynamic shared objects on ubuntu we
need to pass the -D/--dynamic command line option, unlike with
the fedora distros (Arnaldo Carvalho de Melo)
- code-reading:
- Fix perf_env setup for PTI entry trampolines (Adrian Hunter)
- kmod-path:
- Add tests for vdso32 and vdsox32 (Adrian Hunter)
- Use header file util/debug.h (Thomas Richter)
perf annotate:
- Make the various UI backends (stdio, TUI, gtk) use more
consistently structs with annotation options as specified by the
user (Arnaldo Carvalho de Melo)
- Move annotation specific knobs from the symbol_conf global kitchen
sink to the annotation option structs (Arnaldo Carvalho de Melo)
perf script:
- Add more PMU fields to python scripts event handler dict (Jin Yao)
Core:
- Fix misleading error for some unparsable events mentioning PMUs
when those are not involved in the problem (Jiri Olsa)
- Consider BSS symbols when processing /proc/kallsyms ('B' and 'b')
(Arnaldo Carvalho de Melo)
- Be more robust when trying to use per-symbol histograms, checking
for unlikely but possible cases where the space for the histograms
wasn't allocated, print a debug message for such cases (Arnaldo
Carvalho de Melo)
- Fix symbol and object code resolution for vdso32 and vdsox32
(Adrian Hunter)
- No need to check for null when passing pointers to foo__get() style
refcount grabbing helpers, just like in the kernel and with free(),
its safe to pass a NULL pointer to avoid having to check it before
each and every foo__get() call (Arnaldo Carvalho de Melo)
- Remove some dead code (quote.[ch]) (Arnaldo Carvalho de Melo)
- Remove some needless globals, making them local (Arnaldo Carvalho
de Melo)
- Reduce usage of symbol_conf.use_callchain, using other means of
finding out if callchains are in use or available for specific
events, as we evolved this codebase to allow requesting callchains
for just a subset of the monitored events. In time it will help
polish recording and showing mixed sets accross the various tools:
perf record -e cycles/call-graph=fp/,cache-misses/call-graph=dwarf/,instructions'
(Arnaldo Carvalho de Melo)
- Consider PTI entry trampolines in map__rip_2objdump() (Adrian
Hunter)"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits)
perf script python: Add dict fields introduction to Documentation
perf script python: Add more PMU fields to event handler dict
perf script python: Move dsoname code to a new function
perf symbols: Add BSS symbols when reading from /proc/kallsyms
perf annnotate: Make __symbol__inc_addr_samples handle src->histograms == NULL
perf intel-pt: Fix "Unexpected indirect branch" error
perf intel-pt: Fix MTC timing after overflow
perf intel-pt: Fix decoding to accept CBR between FUP and corresponding TIP
perf intel-pt: Fix sync_switch INTEL_PT_SS_NOT_TRACING
perf script powerpc: Python script for hypervisor call statistics
perf test record+probe_libc_inet_pton: Ask 'nm' for dynamic symbols
perf map: Consider PTI entry trampolines in rip_2objdump()
perf test code-reading: Fix perf_env setup for PTI entry trampolines
perf tools: Fix pmu events parsing rule
perf stat: Display user and system time
perf record: Enable arbitrary event names thru name= modifier
perf tools: Fix symbol and object code resolution for vdso32 and vdsox32
perf tests kmod-path: Add tests for vdso32 and vdsox32
perf hists: Check if a hist_entry has callchains before using them
perf hists: Introduce hist_entry__has_callchain() method
...
Linus Torvalds [Sun, 10 Jun 2018 16:00:13 +0000 (09:00 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
"Two small fixlets:
- Add the missing iomu mapping call in the Freescale/NXP/Qualcomm/
whoever owns it now/ SCFG MSI irqchip driver. Otherwise IRQs wont
work at all.
- Fix a SMP=n build warning in the STM32 irq chip driver"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/ls-scfg-msi: Map MSIs in the iommu
irqchip/stm32: Fix non-SMP build warning
Linus Torvalds [Sun, 10 Jun 2018 15:30:35 +0000 (08:30 -0700)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull core fixes from Thomas Gleixner:
"A small set of core updates:
- Make objtool cope with GCC8 oddities some more
- Remove a stale local_irq_save/restore sequence in the signal code
along with the stale comment in the RCU code. The underlying issue
which led to this has been solved long time ago, but nobody cared
to cleanup the hackarounds"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
signal: Remove no longer required irqsave/restore
rcu: Update documentation of rcu_read_unlock()
objtool: Fix GCC 8 cold subfunction detection for aliased functions
Anna-Maria Gleixner [Fri, 25 May 2018 09:05:07 +0000 (11:05 +0200)]
signal: Remove no longer required irqsave/restore
Commit
a841796f11c9 ("signal: align __lock_task_sighand() irq disabling and
RCU") introduced a rcu read side critical section with interrupts
disabled. The changelog suggested that a better long-term fix would be "to
make rt_mutex_unlock() disable irqs when acquiring the rt_mutex structure's
->wait_lock".
This long-term fix has been made in commit
b4abf91047cf ("rtmutex: Make
wait_lock irq safe") for a different reason.
Therefore revert commit
a841796f11c9 ("signal: align >
__lock_task_sighand() irq disabling and RCU") as the interrupt disable
dance is not longer required.
The change was tested on the base of
b4abf91047cf ("rtmutex: Make wait_lock
irq safe") with a four hour run of rcutorture scenario TREE03 with lockdep
enabled as suggested by Paul McKenney.
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: bigeasy@linutronix.de
Link: https://lkml.kernel.org/r/20180525090507.22248-3-anna-maria@linutronix.de
Anna-Maria Gleixner [Fri, 25 May 2018 09:05:06 +0000 (11:05 +0200)]
rcu: Update documentation of rcu_read_unlock()
Since commit
b4abf91047cf ("rtmutex: Make wait_lock irq safe") the
explanation in rcu_read_unlock() documentation about irq unsafe rtmutex
wait_lock is no longer valid.
Remove it to prevent kernel developers reading the documentation to rely on
it.
Suggested-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: bigeasy@linutronix.de
Link: https://lkml.kernel.org/r/20180525090507.22248-2-anna-maria@linutronix.de
Linus Torvalds [Sat, 9 Jun 2018 22:31:35 +0000 (15:31 -0700)]
Merge branch 'proc-cmdline'
Merge proc_cmdline simplifications.
This re-writes the get_mm_cmdline() logic to be rather simpler than it
used to be, and makes the semantics for "cmdline goes past the end of
the original area" more natural.
You _can_ use prctl(PR_SET_MM) to just point your command line somewhere
else entirely, but the traditional model is to just edit things in place
and that still needs to continue to work. At least this way the code
makes some sense.
* proc-cmdline:
fs/proc: simplify and clarify get_mm_cmdline() function
fs/proc: re-factor proc_pid_cmdline_read() a bit
Mikulas Patocka [Sat, 9 Jun 2018 21:04:47 +0000 (23:04 +0200)]
hpfs: Use EUCLEAN for filesystem errors
Use the error code EUCLEAN for filesystem errors because other
filesystems use this code too.
[ And remove unused EMEMERROR - Linus ]
Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 9 Jun 2018 19:11:09 +0000 (12:11 -0700)]
Merge tag 'for-v4.18' of git://git./linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel:
- bq27xxx: Add BQ27426 support
- ab8500: Drop AB8540/9540 support
- Introduced new usb_type property
- Properly document the power-supply ABI
- misc. cleanups and fixes
* tag 'for-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply:
MAINTAINERS: add entry for LEGO MINDSTORMS EV3
power: supply: ab8500_charger: fix spelling mistake: "faile" -> "failed"
power: supply: axp288_fuel_gauge: Remove polling from the driver
power: supply: axp288_fuelguage: Do not bind when the fg function is not used
power: supply: axp288_charger: Do not bind when the charge function is not used
power: supply: axp288_charger: Support 3500 and 4000 mA input current limit
power: supply: s3c-adc-battery: fix driver data initialization
power: supply: charger-manager: Verify polling interval only when polling requested
power: supply: sysfs: Use enum to specify property
power: supply: ab8500: Drop AB8540/9540 support
power: supply: ab8500_fg: fix spelling mistake: "Disharge" -> "Discharge"
power: supply: simplify getting .drvdata
power: supply: bq27xxx: Add support for BQ27426
gpio-poweroff: Use gpiod_set_value_cansleep
Linus Torvalds [Sat, 9 Jun 2018 19:09:26 +0000 (12:09 -0700)]
Merge tag 'hsi-for-4.18' of git://git./linux/kernel/git/sre/linux-hsi
Pull HSI update from Sebastian Reichel:
"Just one patch for the HSI subsystem this time: use the new vm_fault_t
return type"
* tag 'hsi-for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi:
hsi: clients: Change return type to vm_fault_t
Linus Torvalds [Sat, 9 Jun 2018 19:06:24 +0000 (12:06 -0700)]
Merge tag 'clk-for-linus' of git://git./linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd:
"This time we have a good set of changes to the core framework that do
some general cleanups, but nothing too major. The majority of the diff
goes to two SoCs, Actions Semi and Qualcomm. A brand new driver is
introduced for Actions Semi so it takes up some lines to add all the
different types, and the Qualcomm diff is there because we add support
for two SoCs and it's quite a bit of data.
Otherwise the big driver updates are on TI Davinci and Amlogic
platforms. And then the long tail of driver updates for various fixes
and stuff follows after that.
Core:
- debugfs cleanups removing error checking and an unused provider API
- Removal of a clk init typedef that isn't used
- Usage of match_string() to simplify parent string name matching
- OF clk helpers moved to their own file (linux/of_clk.h)
- Make clk warnings more readable across kernel versions
New Drivers:
- Qualcomm SDM845 GCC and Video clk controllers
- Qualcomm MSM8998 GCC
- Actions Semi S900 SoC support
- Nuvoton npcm750 microcontroller clks
- Amlogic axg AO clock controller
Removed Drivers:
- Deprecated Rockchip clk-gate driver
Updates:
- debugfs functions stopped checking return values
- Support for the MSIOF module clocks on Rensas R-Car M3-N
- Support for the new Rensas RZ/G1C and R-Car E3 SoCs
- Qualcomm GDSC, RCG, and PLL updates for clk changes in new SoCs
- Berlin and Amlogic SPDX tagging
- Usage of of_clk_get_parent_count() in more places
- Proper implementation of the CDEV1/2 clocks on Tegra20
- Allwinner H6 PRCM clock support and R40 EMAC support
- Add critical flag to meson8b's fdiv2 as temporary fixup for ethernet
- Round closest support for meson's mpll driver
- Support for meson8b nand clocks and gxbb video decoder clocks
- Mediatek mali clks
- STM32MP1 fixes
- Uniphier LD11/LD20 stream demux system clock"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (134 commits)
clk: qcom: Export clk_fabia_pll_configure()
clk: bcm: Update and add Stingray clock entries
dt-bindings: clk: Update Stingray binding doc
clk-si544: Properly round requested frequency to nearest match
clk: ingenic: jz4770: Add 150us delay after enabling VPU clock
clk: ingenic: jz4770: Enable power of AHB1 bus after ungating VPU clock
clk: ingenic: jz4770: Modify C1CLK clock to disable CPU clock stop on idle
clk: ingenic: jz4770: Change OTG from custom to standard gated clock
clk: ingenic: Support specifying "wait for clock stable" delay
clk: ingenic: Add support for clocks whose gate bit is inverted
clk: use match_string() helper
clk: bcm2835: use match_string() helper
clk: Return void from debug_init op
clk: remove clk_debugfs_add_file()
clk: tegra: no need to check return value of debugfs_create functions
clk: davinci: no need to check return value of debugfs_create functions
clk: bcm2835: no need to check return value of debugfs_create functions
clk: no need to check return value of debugfs_create functions
clk: imx6: add EPIT clock support
clk: mvebu: use correct bit for 98DX3236 NAND
...
Linus Torvalds [Sat, 9 Jun 2018 19:01:36 +0000 (12:01 -0700)]
Merge branch 'for-next' of git://git./linux/kernel/git/shli/md
Pull MD updates from Shaohua Li:
"A few fixes of MD for this merge window. Mostly bug fixes:
- raid5 stripe batch fix from Amy
- Read error handling for raid1 FailFast device from Gioh
- raid10 recovery NULL pointer dereference fix from Guoqing
- Support write hint for raid5 stripe cache from Mariusz
- Fixes for device hot add/remove from Neil and Yufen
- Improve flush bio scalability from Xiao"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
MD: fix lock contention for flush bios
md/raid5: Assigning NULL to sh->batch_head before testing bit R5_Overlap of a stripe
md/raid1: add error handling of read error from FailFast device
md: fix NULL dereference of mddev->pers in remove_and_add_spares()
raid5: copy write hint from origin bio to stripe
md: fix two problems with setting the "re-add" device state.
raid10: check bio in r10buf_pool_free to void NULL pointer dereference
md: fix an error code format and remove unsed bio_sector
Linus Torvalds [Sat, 9 Jun 2018 18:14:30 +0000 (11:14 -0700)]
Merge git://git./linux/kernel/git/davem/sparc
Pull sparc updates from David Miller:
- a FPE signal fix that was also merged upstream
- privileged ADI driver from Tom Hromatka
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc: fix compat siginfo ABI regression
selftests: sparc64: char: Selftest for privileged ADI driver
char: sparc64: Add privileged ADI driver
Linus Torvalds [Sat, 9 Jun 2018 18:10:16 +0000 (11:10 -0700)]
Merge git://git./linux/kernel/git/davem/ide
Pull IDE updates from David Miller:
"Primarily IRQ disabling avoidance changes from Sebastian Andrzej
Siewior"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide:
ide: don't enable/disable interrupts in force threaded-IRQ mode
ide: don't disable interrupts during kmap_atomic()
ide: Handle irq disabling consistently
alim15x3: move irq-restore before pci_dev_put()
Linus Torvalds [Sat, 9 Jun 2018 17:32:39 +0000 (10:32 -0700)]
Merge tag 'staging-4.18-rc1' of git://git./linux/kernel/git/gregkh/staging
Pull staging/IIO updates from Greg KH:
"Here is the big staging and IIO driver update for 4.18-rc1.
It was delayed as I wanted to make sure the final driver deletions did
not cause any major merge issues, and all now looks good.
There are a lot of patches here, just over 1000. The diffstat summary
shows the major changes here:
1007 files changed, 16828 insertions(+), 227770 deletions(-)
Because of this, we might be close to shrinking the overall kernel
source code size for two releases in a row.
There was loads of work in this release cycle, primarily:
- tons of ks7010 driver cleanups
- lots of mt7621 driver fixes and cleanups
- most driver cleanups
- wilc1000 fixes and cleanups
- lots and lots of IIO driver cleanups and new additions
- debugfs cleanups for all staging drivers
- lots of other staging driver cleanups and fixes, the shortlog has
the full details.
but the big user-visable things here are the removal of 3 chunks of
code:
- ncpfs and ipx were removed on schedule, no one has cared about this
code since it moved to staging last year, and if it needs to come
back, it can be reverted.
- lustre file system is removed.
I've ranted at the lustre developers about once a year for the past
5 years, with no real forward progress at all to clean things up
and get the code into the "real" part of the kernel.
Given that the lustre developers continue to work on an external
tree and try to port those changes to the in-kernel tree every once
in a while, this whole thing really really is not working out at
all. So I'm deleting it so that the developers can spend the time
working in their out-of-tree location and get things cleaned up
properly to get merged into the tree correctly at a later date.
Because of these file removals, you will have merge issues on some of
these files (2 in the ipx code, 1 in the ncpfs code, and 1 in the
atomisp driver). Just delete those files, it's a simple merge :)
All of this has been in linux-next for a while with no reported
problems"
* tag 'staging-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1011 commits)
staging: ipx: delete it from the tree
ncpfs: remove uapi .h files
ncpfs: remove Documentation
ncpfs: remove compat functionality
staging: ncpfs: delete it
staging: lustre: delete the filesystem from the tree.
staging: vc04_services: no need to save the log debufs dentries
staging: vc04_services: vchiq_debugfs_log_entry can be a void *
staging: vc04_services: remove struct vchiq_debugfs_info
staging: vc04_services: move client dbg directory into static variable
staging: vc04_services: remove odd vchiq_debugfs_top() wrapper
staging: vc04_services: no need to check debugfs return values
staging: mt7621-gpio: reorder includes alphabetically
staging: mt7621-gpio: change gc_map to don't use pointers
staging: mt7621-gpio: use GPIOF_DIR_OUT and GPIOF_DIR_IN macros instead of custom values
staging: mt7621-gpio: change 'to_mediatek_gpio' to make just a one line return
staging: mt7621-gpio: dt-bindings: update documentation for #interrupt-cells property
staging: mt7621-gpio: update #interrupt-cells for the gpio node
staging: mt7621-gpio: dt-bindings: complete documentation for the gpio
staging: mt7621-dts: add missing properties to gpio node
...
Tony Luck [Fri, 8 Jun 2018 16:07:32 +0000 (09:07 -0700)]
x86/intel_rdt: Enable CMT and MBM on new Skylake stepping
New stepping of Skylake has fixes for cache occupancy and memory
bandwidth monitoring.
Update the code to enable these by default on newer steppings.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: stable@vger.kernel.org # v4.14
Cc: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Link: https://lkml.kernel.org/r/20180608160732.9842-1-tony.luck@intel.com
Jens Axboe [Sat, 9 Jun 2018 12:37:14 +0000 (06:37 -0600)]
block: fix use-after-free in block flush handling
A recent commit reused the original request flags for the flush
queue handling. However, for some of the kick flush cases, the
original request was already completed. This caused a use after
free, if blk-mq wasn't used.
Fixes: 84fca1b0c461 ("block: pass failfast and driver-specific flags to flush requests")
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Linus Torvalds [Sat, 9 Jun 2018 00:21:52 +0000 (17:21 -0700)]
Merge tag 'libnvdimm-for-4.18' of git://git./linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Dan Williams:
"This adds a user for the new 'bytes-remaining' updates to
memcpy_mcsafe() that you already received through Ingo via the
x86-dax- for-linus pull.
Not included here, but still targeting this cycle, is support for
handling memory media errors (poison) consumed via userspace dax
mappings.
Summary:
- DAX broke a fundamental assumption of truncate of file mapped
pages. The truncate path assumed that it is safe to disconnect a
pinned page from a file and let the filesystem reclaim the physical
block. With DAX the page is equivalent to the filesystem block.
Introduce dax_layout_busy_page() to enable filesystems to wait for
pinned DAX pages to be released. Without this wait a filesystem
could allocate blocks under active device-DMA to a new file.
- DAX arranges for the block layer to be bypassed and uses
dax_direct_access() + copy_to_iter() to satisfy read(2) calls.
However, the memcpy_mcsafe() facility is available through the pmem
block driver. In order to safely handle media errors, via the DAX
block-layer bypass, introduce copy_to_iter_mcsafe().
- Fix cache management policy relative to the ACPI NFIT Platform
Capabilities Structure to properly elide cache flushes when they
are not necessary. The table indicates whether CPU caches are
power-fail protected. Clarify that a deep flush is always performed
on REQ_{FUA,PREFLUSH} requests"
* tag 'libnvdimm-for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (21 commits)
dax: Use dax_write_cache* helpers
libnvdimm, pmem: Do not flush power-fail protected CPU caches
libnvdimm, pmem: Unconditionally deep flush on *sync
libnvdimm, pmem: Complete REQ_FLUSH => REQ_PREFLUSH
acpi, nfit: Remove ecc_unit_size
dax: dax_insert_mapping_entry always succeeds
libnvdimm, e820: Register all pmem resources
libnvdimm: Debug probe times
linvdimm, pmem: Preserve read-only setting for pmem devices
x86, nfit_test: Add unit test for memcpy_mcsafe()
pmem: Switch to copy_to_iter_mcsafe()
dax: Report bytes remaining in dax_iomap_actor()
dax: Introduce a ->copy_to_iter dax operation
uio, lib: Fix CONFIG_ARCH_HAS_UACCESS_MCSAFE compilation
xfs, dax: introduce xfs_break_dax_layouts()
xfs: prepare xfs_break_layouts() for another layout type
xfs: prepare xfs_break_layouts() to be called with XFS_MMAPLOCK_EXCL
mm, fs, dax: handle layout changes to pinned dax mappings
mm: fix __gup_device_huge vs unmap
mm: introduce MEMORY_DEVICE_FS_DAX and CONFIG_DEV_PAGEMAP_OPS
...
Petr Machata [Fri, 8 Jun 2018 13:11:47 +0000 (15:11 +0200)]
net: bridge: Fix locking in br_fdb_find_port()
Callers of br_fdb_find() need to hold the hash lock, which
br_fdb_find_port() doesn't do. However, since br_fdb_find_port() is not
doing any actual FDB manipulation, the hash lock is not really needed at
all. So convert to br_fdb_find_rcu(), surrounded by rcu_read_lock() /
_unlock() pair.
The device pointer copied from inside the FDB entry is then kept alive
by the RTNL lock, which br_fdb_find_port() asserts.
Fixes: 4d4fd36126d6 ("net: bridge: Publish bridge accessor functions")
Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Fri, 8 Jun 2018 09:35:40 +0000 (11:35 +0200)]
udp: fix rx queue len reported by diag and proc interface
After commit
6b229cf77d68 ("udp: add batching to udp_rmem_release()")
the sk_rmem_alloc field does not measure exactly anymore the
receive queue length, because we batch the rmem release. The issue
is really apparent only after commit
0d4a6608f68c ("udp: do rmem bulk
free even if the rx sk queue is empty"): the user space can easily
check for an empty socket with not-0 queue length reported by the 'ss'
tool or the procfs interface.
We need to use a custom UDP helper to report the correct queue length,
taking into account the forward allocation deficit.
Reported-by: trevor.francis@46labs.com
Fixes: 6b229cf77d68 ("UDP: add batching to udp_rmem_release()")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Bjørn Mork [Fri, 8 Jun 2018 07:15:24 +0000 (09:15 +0200)]
cdc_ncm: avoid padding beyond end of skb
Commit
4a0e3e989d66 ("cdc_ncm: Add support for moving NDP to end
of NCM frame") added logic to reserve space for the NDP at the
end of the NTB/skb. This reservation did not take the final
alignment of the NDP into account, causing us to reserve too
little space. Additionally the padding prior to NDP addition did
not ensure there was enough space for the NDP.
The NTB/skb with the NDP appended would then exceed the configured
max size. This caused the final padding of the NTB to use a
negative count, padding to almost INT_MAX, and resulting in:
[60103.825970] BUG: unable to handle kernel paging request at
ffff9641f2004000
[60103.825998] IP: __memset+0x24/0x30
[60103.826001] PGD
a6a06067 P4D
a6a06067 PUD
4f65a063 PMD
72003063 PTE 0
[60103.826013] Oops: 0002 [#1] SMP NOPTI
[60103.826018] Modules linked in: (removed(
[60103.826158] CPU: 0 PID: 5990 Comm: Chrome_DevTools Tainted: G O 4.14.0-3-amd64 #1 Debian 4.14.17-1
[60103.826162] Hardware name: LENOVO 20081 BIOS 41CN28WW(V2.04) 05/03/2012
[60103.826166] task:
ffff964193484fc0 task.stack:
ffffb2890137c000
[60103.826171] RIP: 0010:__memset+0x24/0x30
[60103.826174] RSP: 0000:
ffff964316c03b68 EFLAGS:
00010216
[60103.826178] RAX:
0000000000000000 RBX:
00000000fffffffd RCX:
000000001ffa5000
[60103.826181] RDX:
0000000000000005 RSI:
0000000000000000 RDI:
ffff9641f2003ffc
[60103.826184] RBP:
ffff964192f6c800 R08:
00000000304d434e R09:
ffff9641f1d2c004
[60103.826187] R10:
0000000000000002 R11:
00000000000005ae R12:
ffff9642e6957a80
[60103.826190] R13:
ffff964282ff2ee8 R14:
000000000000000d R15:
ffff9642e4843900
[60103.826194] FS:
00007f395aaf6700(0000) GS:
ffff964316c00000(0000) knlGS:
0000000000000000
[60103.826197] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[60103.826200] CR2:
ffff9641f2004000 CR3:
0000000013b0c000 CR4:
00000000000006f0
[60103.826204] Call Trace:
[60103.826212] <IRQ>
[60103.826225] cdc_ncm_fill_tx_frame+0x5e3/0x740 [cdc_ncm]
[60103.826236] cdc_ncm_tx_fixup+0x57/0x70 [cdc_ncm]
[60103.826246] usbnet_start_xmit+0x5d/0x710 [usbnet]
[60103.826254] ? netif_skb_features+0x119/0x250
[60103.826259] dev_hard_start_xmit+0xa1/0x200
[60103.826267] sch_direct_xmit+0xf2/0x1b0
[60103.826273] __dev_queue_xmit+0x5e3/0x7c0
[60103.826280] ? ip_finish_output2+0x263/0x3c0
[60103.826284] ip_finish_output2+0x263/0x3c0
[60103.826289] ? ip_output+0x6c/0xe0
[60103.826293] ip_output+0x6c/0xe0
[60103.826298] ? ip_forward_options+0x1a0/0x1a0
[60103.826303] tcp_transmit_skb+0x516/0x9b0
[60103.826309] tcp_write_xmit+0x1aa/0xee0
[60103.826313] ? sch_direct_xmit+0x71/0x1b0
[60103.826318] tcp_tasklet_func+0x177/0x180
[60103.826325] tasklet_action+0x5f/0x110
[60103.826332] __do_softirq+0xde/0x2b3
[60103.826337] irq_exit+0xae/0xb0
[60103.826342] do_IRQ+0x81/0xd0
[60103.826347] common_interrupt+0x98/0x98
[60103.826351] </IRQ>
[60103.826355] RIP: 0033:0x7f397bdf2282
[60103.826358] RSP: 002b:
00007f395aaf57d8 EFLAGS:
00000206 ORIG_RAX:
ffffffffffffff6e
[60103.826362] RAX:
0000000000000000 RBX:
00002f07bc6d0900 RCX:
00007f39752d7fe7
[60103.826365] RDX:
0000000000000022 RSI:
0000000000000147 RDI:
00002f07baea02c0
[60103.826368] RBP:
0000000000000001 R08:
0000000000000000 R09:
0000000000000000
[60103.826371] R10:
00000000ffffffff R11:
0000000000000000 R12:
00002f07baea02c0
[60103.826373] R13:
00002f07bba227a0 R14:
00002f07bc6d090c R15:
0000000000000000
[60103.826377] Code: 90 90 90 90 90 90 90 0f 1f 44 00 00 49 89 f9 48 89 d1 83
e2 07 48 c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 <f3> 48
ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1
[60103.826442] RIP: __memset+0x24/0x30 RSP:
ffff964316c03b68
[60103.826444] CR2:
ffff9641f2004000
Commit
e1069bbfcf3b ("net: cdc_ncm: Reduce memory use when kernel
memory low") made this bug much more likely to trigger by reducing
the NTB size under memory pressure.
Link: https://bugs.debian.org/893393
Reported-by: Горбешко Богдан <bodqhrohro@gmail.com>
Reported-and-tested-by: Dennis Wassenberg <dennis.wassenberg@secunet.com>
Cc: Enrico Mioso <mrkiko.rs@gmail.com>
Fixes: 4a0e3e989d66 ("cdc_ncm: Add support for moving NDP to end of NCM frame")
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Davide Caratti [Fri, 8 Jun 2018 03:02:31 +0000 (05:02 +0200)]
net/sched: act_simple: fix parsing of TCA_DEF_DATA
use nla_strlcpy() to avoid copying data beyond the length of TCA_DEF_DATA
netlink attribute, in case it is less than SIMP_MAX_DATA and it does not
end with '\0' character.
v2: fix errors in the commit message, thanks Hangbin Liu
Fixes: fa1b1cff3d06 ("net_cls_act: Make act_simple use of netlink policy.")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
YueHaibing [Fri, 8 Jun 2018 02:58:25 +0000 (10:58 +0800)]
net: fddi: fix a possible null-ptr-deref
bp->SharedMemAddr is set to NULL while bp->SharedMemSize lesser-or-equal 0,
then memset will trigger null-ptr-deref.
fix it by replacing pci_alloc_consistent with dma_zalloc_coherent.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Colin Ian King [Thu, 7 Jun 2018 21:54:37 +0000 (17:54 -0400)]
net: aquantia: fix unsigned numvecs comparison with less than zero
From: Colin Ian King <colin.king@canonical.com>
This was originally mistakenly submitted to net-next. Resubmitting to net.
The comparison of numvecs < 0 is always false because numvecs is a u32
and hence the error return from a failed call to pci_alloc_irq_vectores
is never detected. Fix this by using the signed int ret to handle the
error return and assign numvecs to err.
Detected by CoverityScan, CID#
1468650 ("Unsigned compared against 0")
Fixes: a09bd81b5413 ("net: aquantia: Limit number of vectors to actually allocated irqs")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dan Williams [Fri, 8 Jun 2018 22:16:44 +0000 (15:16 -0700)]
Merge branch 'for-4.18/mcsafe' into libnvdimm-for-next
Dan Williams [Fri, 8 Jun 2018 22:16:40 +0000 (15:16 -0700)]
Merge branch 'for-4.18/dax' into libnvdimm-for-next
Linus Torvalds [Fri, 8 Jun 2018 20:36:19 +0000 (13:36 -0700)]
Merge tag 'for-linus-
20180608' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A few fixes for this merge window, where some of them should go in
sooner rather than later, hence a new pull this week. This pull
request contains:
- Set of NVMe fixes, mostly follow up cleanups/fixes to the queue
changes, but also teardown/removal and misc changes (Christop/Dan/
Johannes/Sagi/Steve).
- Two lightnvm fixes for issues that showed up in this window
(Colin/Wei).
- Failfast/driver flags inheritance for flush requests (Hannes).
- The md device put sanitization and fix (Kent).
- dm bio_set inheritance fix (me).
- nbd discard granularity fix (Josef).
- nbd consistency in command printing (Kevin).
- Loop recursion validation fix (Ted).
- Partition overlap check (Wang)"
[ .. and now my build is warning-free again thanks to the md fix - Linus ]
* tag 'for-linus-
20180608' of git://git.kernel.dk/linux-block: (22 commits)
nvme: cleanup double shift issue
nvme-pci: make CMB SQ mod-param read-only
nvme-pci: unquiesce dead controller queues
nvme-pci: remove HMB teardown on reset
nvme-pci: queue creation fixes
nvme-pci: remove unnecessary completion doorbell check
nvme-pci: remove unnecessary nested locking
nvmet: filter newlines from user input
nvme-rdma: correctly check for target keyed sgl support
nvme: don't hold nvmf_transports_rwsem for more than transport lookups
nvmet: return all zeroed buffer when we can't find an active namespace
md: Unify mddev destruction paths
dm: use bioset_init_from_src() to copy bio_set
block: add bioset_init_from_src() helper
block: always set partition number to '0' in blk_partition_remap()
block: pass failfast and driver-specific flags to flush requests
nbd: set discard_alignment to the granularity
nbd: Consistently use request pointer in debug messages.
block: add verifier for cmdline partition
lightnvm: pblk: fix resource leak of invalid_bitmap
...
Linus Torvalds [Fri, 8 Jun 2018 20:08:57 +0000 (13:08 -0700)]
Merge tag 'regulator-v4.18' of git://git./linux/kernel/git/broonie/regulator
Pull regulator updates from Mark Brown:
"Quite a lot of core work this time around, though not 100% successful.
We gained support for runtime mode changes thanks to David Collins and
improved support for write only regulators (ones where we can't read
back the configuration) from Douglas Anderson.
There's been quite a bit of work from Linus Walleij on converting from
specfying GPIOs by numbers to descriptors. Sadly the testing turned
out to be less good than we had hoped and so a lot of this had to be
reverted.
We also have the start of updates to use coupled regulators from
Maciej Purski, unfortunately there are further problems there so the
last couple of patches have been reverted.
We also have new drivers for
BD71837 and SY8106A devices, SAW
regulators on Qualcomm SPMI and dropped support for some preproduction
chips that never made it to market from the AB8500 driver"
* tag 'regulator-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (57 commits)
regulator: gpio: Revert
ARM: pxa, regulator: fix building ezx e680
regulator: Revert coupled regulator support again
regulator: wm8994: Fix shared GPIOs
regulator: max77686: Fix shared GPIOs
regulator:
bd71837:
BD71837 PMIC regulator driver
regulator:
bd71837: Devicetree bindings for
BD71837 regulators
regulator: gpio: Get enable GPIO using GPIO descriptor
regulator: fixed: Convert to use GPIO descriptor only
regulator: s2mps11: Fix boot on Odroid XU3
dt-bindings: qcom_spmi: Document SAW support
regulator: qcom_spmi: Add support for SAW
regulator: tps65090: Pass descriptor instead of GPIO number
regulator: s5m8767: Pass descriptor instead of GPIO number
regulator: pfuze100: Delete reference to ena_gpio
regulator: max8952: Pass descriptor instead of GPIO number
regulator: lp8788-ldo: Pass descriptor instead of GPIO number
regulator: lm363x: Pass descriptor instead of GPIO number
regulator: max8973: Pass descriptor instead of GPIO number
regulator: mc13xxx-core: Switch to SPDX identifier
...
Dan Carpenter [Thu, 7 Jun 2018 08:27:41 +0000 (11:27 +0300)]
nvme: cleanup double shift issue
The problem here is that set_bit() and test_bit() take a bit number so
we should be passing 0 but instead we're passing (1 << 0) which leads to
a double shift. It doesn't cause a runtime bug in the current code
because it's done consistently and we only set that one bit.
I decided to just re-use NVME_AER_NOTICE_NS_CHANGED instead of
introducing a new define for this.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Keith Busch [Wed, 6 Jun 2018 14:13:09 +0000 (08:13 -0600)]
nvme-pci: make CMB SQ mod-param read-only
A controller reset after a run time change of the CMB module parameter
breaks the driver. An 'on -> off' will have the driver use NULL for the
host memory queue, and 'off -> on' will use mismatched queue depth between
the device and the host.
We could fix both, but there isn't really a good reason to change this
at run time anyway, compared to at module load time, so this patch makes
parameter read-only after after modprobe.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Keith Busch [Wed, 6 Jun 2018 14:13:08 +0000 (08:13 -0600)]
nvme-pci: unquiesce dead controller queues
This patch ensures the nvme namsepace request queues are not quiesced
on a surprise removal. It's possible the queues were previously killed
in a failed reset, so the queues need to be unquiesced to ensure all
requests are flushed to completion.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Keith Busch [Wed, 6 Jun 2018 14:13:07 +0000 (08:13 -0600)]
nvme-pci: remove HMB teardown on reset
The controller is required to disable its host memory buffer use on
controller reset. We don't need to submit an admin command to delete it,
so this patch skips sending that command so we don't need to worry about
handling a timeout.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Keith Busch [Wed, 6 Jun 2018 14:13:06 +0000 (08:13 -0600)]
nvme-pci: queue creation fixes
We've been ignoring NVMe error status on queue creations. Fortunately they
are uncommon, but we should handle these anyway. This patch adds checks
for the a positive error return value that indicates an NVMe status.
If we do see a negative return, the controller isn't usable, so this
patch returns immediately in since we can't unwind that failure.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Keith Busch [Wed, 6 Jun 2018 14:13:05 +0000 (08:13 -0600)]
nvme-pci: remove unnecessary completion doorbell check
The nvme pci driver never unmaps the doorbell registers while the requests
are active, so we can always safely update the completion queue head.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Keith Busch [Wed, 6 Jun 2018 14:13:04 +0000 (08:13 -0600)]
nvme-pci: remove unnecessary nested locking
The nvme pci driver no longer handles completions under the cq lock,
so the nested locking is not necessary.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Sagi Grimberg [Wed, 6 Jun 2018 12:27:48 +0000 (15:27 +0300)]
nvmet: filter newlines from user input
We should avoid consuming the newlines in traddr, trsvcid and
device_path. Add minimal processing to make sure they are gone.
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Steve Wise [Tue, 5 Jun 2018 17:16:41 +0000 (10:16 -0700)]
nvme-rdma: correctly check for target keyed sgl support
The code was checking bit 20 instead of bit 2. Also fixed the log entry.
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Johannes Thumshirn [Fri, 1 Jun 2018 07:11:20 +0000 (09:11 +0200)]
nvme: don't hold nvmf_transports_rwsem for more than transport lookups
Only take nvmf_transports_rwsem when doing a lookup of registered
transports, so that a blocking ->create_ctrl doesn't prevent other
actions on /dev/nvme-fabrics.
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
[hch: increased lock hold time a bit to be safe, added a comment
and updated the changelog]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Christoph Hellwig [Thu, 31 May 2018 16:23:48 +0000 (18:23 +0200)]
nvmet: return all zeroed buffer when we can't find an active namespace
Quote from Figure 106 in NVMe 1.3a:
The Identify Namespace data structure is returned to the host for the
namespace specified in the Namespace Identifier (CDW1.NSID) field if it
is an active NSID. If the specified namespace is not an active NSID,
then the controller returns a zero filled data structure.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@rimberg.me>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Linus Torvalds [Fri, 8 Jun 2018 18:10:58 +0000 (11:10 -0700)]
Merge tag 'arm64-upstream' of git://git./linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
"Apart from the core arm64 and perf changes, the Spectre v4 mitigation
touches the arm KVM code and the ACPI PPTT support touches drivers/
(acpi and cacheinfo). I should have the maintainers' acks in place.
Summary:
- Spectre v4 mitigation (Speculative Store Bypass Disable) support
for arm64 using SMC firmware call to set a hardware chicken bit
- ACPI PPTT (Processor Properties Topology Table) parsing support and
enable the feature for arm64
- Report signal frame size to user via auxv (AT_MINSIGSTKSZ). The
primary motivation is Scalable Vector Extensions which requires
more space on the signal frame than the currently defined
MINSIGSTKSZ
- ARM perf patches: allow building arm-cci as module, demote
dev_warn() to dev_dbg() in arm-ccn event_init(), miscellaneous
cleanups
- cmpwait() WFE optimisation to avoid some spurious wakeups
- L1_CACHE_BYTES reverted back to 64 (for performance reasons that
have to do with some network allocations) while keeping
ARCH_DMA_MINALIGN to 128. cache_line_size() returns the actual
hardware Cache Writeback Granule
- Turn LSE atomics on by default in Kconfig
- Kernel fault reporting tidying
- Some #include and miscellaneous cleanups"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (53 commits)
arm64: Fix syscall restarting around signal suppressed by tracer
arm64: topology: Avoid checking numa mask for scheduler MC selection
ACPI / PPTT: fix build when CONFIG_ACPI_PPTT is not enabled
arm64: cpu_errata: include required headers
arm64: KVM: Move VCPU_WORKAROUND_2_FLAG macros to the top of the file
arm64: signal: Report signal frame size to userspace via auxv
arm64/sve: Thin out initialisation sanity-checks for sve_max_vl
arm64: KVM: Add ARCH_WORKAROUND_2 discovery through ARCH_FEATURES_FUNC_ID
arm64: KVM: Handle guest's ARCH_WORKAROUND_2 requests
arm64: KVM: Add ARCH_WORKAROUND_2 support for guests
arm64: KVM: Add HYP per-cpu accessors
arm64: ssbd: Add prctl interface for per-thread mitigation
arm64: ssbd: Introduce thread flag to control userspace mitigation
arm64: ssbd: Restore mitigation status on CPU resume
arm64: ssbd: Skip apply_ssbd if not using dynamic mitigation
arm64: ssbd: Add global mitigation state accessor
arm64: Add 'ssbd' command-line option
arm64: Add ARCH_WORKAROUND_2 probing
arm64: Add per-cpu infrastructure to call ARCH_WORKAROUND_2
arm64: Call ARCH_WORKAROUND_2 on transitions between EL0 and EL1
...
Linus Torvalds [Fri, 8 Jun 2018 18:02:21 +0000 (11:02 -0700)]
Merge tag 'dmaengine-4.18-rc1' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine updates from Vinod Koul:
- updates to sprd, bam_dma, stm drivers
- remove VLAs in dmatest
- move TI drivers to their own subdir
- switch to SPDX tags for ima/mxs dma drivers
- simplify getting .drvdata on bunch of drivers by Wolfram Sang
* tag 'dmaengine-4.18-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (32 commits)
dmaengine: sprd: Add Spreadtrum DMA configuration
dmaengine: sprd: Optimize the sprd_dma_prep_dma_memcpy()
dmaengine: imx-dma: Switch to SPDX identifier
dmaengine: mxs-dma: Switch to SPDX identifier
dmaengine: imx-sdma: Switch to SPDX identifier
dmaengine: usb-dmac: Document R8A7799{0,5} bindings
dmaengine: qcom: bam_dma: fix some doc warnings.
dmaengine: qcom: bam_dma: fix invalid assignment warning
dmaengine: sprd: fix an NULL vs IS_ERR() bug
dmaengine: sprd: Use devm_ioremap_resource() to map memory
dmaengine: sprd: Fix potential NULL dereference in sprd_dma_probe()
dmaengine: pl330: flush before wait, and add dev burst support.
dmaengine: axi-dmac: Request IRQ with IRQF_SHARED
dmaengine: stm32-mdma: fix spelling mistake: "avalaible" -> "available"
dmaengine: rcar-dmac: Document R-Car D3 bindings
dmaengine: sprd: Move DMA request mode and interrupt type into head file
dmaengine: sprd: Define the DMA data width type
dmaengine: sprd: Define the DMA transfer step type
dmaengine: ti: New directory for Texas Instruments DMA drivers
dmaengine: shdmac: Change platform check to CONFIG_ARCH_RENESAS
...
Linus Torvalds [Fri, 8 Jun 2018 17:44:33 +0000 (10:44 -0700)]
Merge tag 'iommu-updates-v4.18' of git://git./linux/kernel/git/joro/iommu
Pull IOMMU updates from Joerg Roedel:
"Nothing big this time. In particular:
- Debugging code for Tegra-GART
- Improvement in Intel VT-d fault printing to prevent soft-lockups
when on fault storms
- Improvements in AMD IOMMU event reporting
- NUMA aware allocation in io-pgtable code for ARM
- Various other small fixes and cleanups all over the place"
* tag 'iommu-updates-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/io-pgtable-arm: Make allocations NUMA-aware
iommu/amd: Prevent possible null pointer dereference and infinite loop
iommu/amd: Fix grammar of comments
iommu: Clean up the comments for iommu_group_alloc
iommu/vt-d: Remove unnecessary parentheses
iommu/vt-d: Clean up pasid quirk for pre-production devices
iommu/vt-d: Clean up unused variable in find_or_alloc_domain
iommu/vt-d: Fix iotlb psi missing for mappings
iommu/vt-d: Introduce __mapping_notify_one()
iommu: Remove extra NULL check when call strtobool()
iommu/amd: Update logging information for new event type
iommu/amd: Update the PASID information printed to the system log
iommu/tegra: gart: Fix gart_iommu_unmap()
iommu/tegra: gart: Add debugging facility
iommu/io-pgtable-arm: Use for_each_set_bit to simplify code
iommu/qcom: Simplify getting .drvdata
iommu: Remove depends on HAS_DMA in case of platform dependency
iommu/vt-d: Ratelimit each dmar fault printing
Linus Torvalds [Fri, 8 Jun 2018 17:39:20 +0000 (10:39 -0700)]
Merge tag 'mtd/for-4.18' of git://git.infradead.org/linux-mtd
Pull MTD updates from Boris Brezillon:
"Core changes:
- Add a sysfs attribute to expose available OOB size
Driver changes:
- Remove HAS_DMA dependency on various drivers
- Use dev_get_drvdata() instead of platform_get_drvdata() in docg3
- Replace msleep by usleep_range() in the dataflash driver
- Avoid VLA usage in nftl layers
- Remove useless .owner assignment in pismo
- Fix various issues in the CFI driver
- Improve TRX partition handling expose a DT compat for this part
parser
- Clarify OFFSET_CONTINUOUS meaning
NAND core changes:
- Add Miquel as a NAND maintainer
- Add access mode to the nand_page_io_req struct
- Fix kernel-doc in rawnand.h
- Support bit-wise majority to recover from corrupted ONFI parameter
pages
- Stop checking FAIL bit after a SET_FEATURES, as documented in the
ONFI spec
Raw NAND Driver changes:
- Fix and cleanup the error path of many NAND controller drivers
- GPMI:
+ Cleanup/simplification of a few aspects in the driver
+ Take ECC setup specified in the DT into account
- sunxi: remove support for GPIO-based R/B polling
- MTK:
+ Use of_device_get_match_data() instead of of_match_device()
+ Add an entry in MAINTAINERS for this driver
+ Fix nand-ecc-step-size and nand-ecc-strength description in the
DT bindings doc
- fsl_ifc: fix ->cmdfunc() to read more than one ONFI parameter page
OneNAND driver changes:
- samsung: use dev_get_drvdata() instead of platform_get_drvdata()
SPI NOR core changes:
- Add support for a bunch of SPI NOR chips
- Clear EAR reg when switching to 3-byte addressing mode on Winbond
chips
SPI NOR controller driver changes:
- cadence: Add DMA support for direct mode reads
- hisi: Prefix a few functions with hisi_
- intel:
+ Mark the driver as "dangerous" in Kconfig
+ Fix atomic sequence handling
+ Pass a 40us delay (instead of 0us) to readl_poll_timeout()
- fsl:
+ fix a typo in a function name
+ add support for IP variants embedded in the ls2080a and ls1080a
SoCs
- stm32: request exclusive control of the reset line"
* tag 'mtd/for-4.18' of git://git.infradead.org/linux-mtd: (66 commits)
mtd: nand: Pass mode information to nand_page_io_req
mtd: cfi_cmdset_0002: Change erase one block to enable XIP once
mtd: cfi_cmdset_0002: Change erase functions to check chip good only
mtd: cfi_cmdset_0002: Change erase functions to retry for error
mtd: cfi_cmdset_0002: Change definition naming to retry write operation
mtd: cfi_cmdset_0002: Change write buffer to check correct value
mtd: cmdlinepart: Update comment for introduction of OFFSET_CONTINUOUS
mtd: bcm47xxpart: add of_match_table with a new DT binding
dt-bindings: mtd: document Broadcom's BCM47xx partitions
mtd: spi-nor: Add support for EN25QH32
mtd: spi-nor: Add support for is25wp series chips
mtd: spi-nor: Add Winbond w25q32jv support
mtd: spi-nor: fsl-quadspi: add support for ls2080a/ls1080a
mtd: spi-nor: stm32-quadspi: explicitly request exclusive reset control
mtd: spi-nor: intel: provide a range for poll_timout
mtd: spi-nor: fsl-quadspi: fix api naming typo _init_ahb_read
mtd: spi-nor: intel-spi: Explicitly mark the driver as dangerous in Kconfig
mtd: spi-nor: intel-spi: Fix atomic sequence handling
mtd: rawnand: Do not check FAIL bit when executing a SET_FEATURES op
mtd: rawnand: use bit-wise majority to recover the ONFI param page
...
Linus Torvalds [Fri, 8 Jun 2018 17:31:52 +0000 (10:31 -0700)]
Merge tag 'gpio-v4.18-1' of git://git./linux/kernel/git/linusw/linux-gpio
Pull GPIO updates from Linus Walleij:
"This is the bulk of GPIO changes for the v4.18 development cycle.
Core changes:
- We have killed off VLA from the core library and all drivers.
The background should be clear for everyone at this point:
https://lwn.net/Articles/749064/
Also I just don't like VLA's, kernel developers hate it when
compilers do things behind their back. It's as simple as that.
I'm sorry that they even slipped in to begin with. Kudos to Laura
Abbott for exorcising them.
- Support GPIO hogs in machines/board files.
New drivers and chip support:
- R-Car r8a77470 (RZ/G1C)
- R-Car r8a77965 (M3-N)
- R-Car r8a77990 (E3)
- PCA953x driver improvements to accomodate more variants.
Improvements and new features:
- Support one interrupt per line on port A in the DesignWare dwapb
driver.
Misc:
- Random cleanups, right header files in the drivers, some size
optimizations etc"
* tag 'gpio-v4.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (73 commits)
gpio: davinci: fix build warning when !CONFIG_OF
gpio: dwapb: Fix rework support for 1 interrupt per port A GPIO
gpio: pxa: Include the right header
gpio: pl061: Include the right header
gpio: pch: Include the right header
gpio: pcf857x: Include the right header
gpio: pca953x: Include the right header
gpio: palmas: Include the right header
gpio: omap: Include the right header
gpio: octeon: Include the right header
gpio: mxs: Switch to SPDX identifier
gpio: Remove VLA from stmpe driver
gpio: mxc: Switch to SPDX identifier
gpio: mxc: add clock operation
gpio: Remove VLA from gpiolib
gpio: aspeed: Use a cache of output data registers
gpio: aspeed: Set output latch before changing direction
gpio: pca953x: fix address calculation for pcal6524
gpio: pca953x: define masks for addressing common and extended registers
gpio: pca953x: set the PCA_PCAL flag also when matching by DT
...
Linus Torvalds [Fri, 8 Jun 2018 17:29:26 +0000 (10:29 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid
Pull HID updates from Jiri Kosina:
- Valve Steam Controller support from Rodrigo Rivas Costa
- Redragon Asura support from Robert Munteanu
- improvement of duplicate usage handling in generic hid-input from
Benjamin Tissoires
- Win 8.1 precisioun touchpad spec implementation from Benjamin
Tissoires
- Support for "In Range" flag for Wacom Intuos/Bamboo devices from
Jason Gerecke
- other various assorted smaller fixes and improvements
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (27 commits)
HID: rmi: use HID_QUIRK_NO_INPUT_SYNC
HID: multitouch: fix calculation of last slot field in multi-touch reports
HID: quirks: remove Delcom Visual Signal Indicator from hid_have_special_driver[]
HID: steam: select CONFIG_POWER_SUPPLY
HID: i2c-hid: remove i2c_hid_open_mut
HID: wacom: Support "in range" for Intuos/Bamboo tablets where possible
HID: core: fix hid_hw_open() comment
HID: hid-plantronics: Re-resend Update to map button for PTT products
HID: multitouch: fix types returned from mt_need_to_apply_feature()
HID: i2c-hid: check if device is there before really probing
HID: steam: add missing fields in client initialization
HID: steam: add battery device.
HID: add driver for Valve Steam Controller
HID: alps: Fix some style in 't4_read_write_register()'
HID: alps: Check errors returned by 't4_read_write_register()'
HID: alps: Save a memory allocation in 't4_read_write_register()' when writing data
HID: alps: Report an error if we receive invalid data in 't4_read_write_register()'
HID: multitouch: implement precision touchpad latency and switches
HID: multitouch: simplify the settings of the various features
HID: multitouch: make use of HID_QUIRK_INPUT_PER_APP
...
Linus Torvalds [Fri, 8 Jun 2018 17:27:41 +0000 (10:27 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/livepatching
Pull livepatching fixlet from Jiri Kosina:
"livepatching documentation fix from Petr Mladek"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching:
livepatch: Remove not longer valid limitations from the documentation
Linus Torvalds [Fri, 8 Jun 2018 17:00:20 +0000 (10:00 -0700)]
Merge branch 'work.aio' of git://git./linux/kernel/git/viro/vfs
Pull aio iopriority support from Al Viro:
"The rest of aio stuff for this cycle - Adam's aio ioprio series"
* 'work.aio' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fs: aio ioprio use ioprio_check_cap ret val
fs: aio ioprio add explicit block layer dependence
fs: iomap dio set bio prio from kiocb prio
fs: blkdev set bio prio from kiocb prio
fs: Add aio iopriority support
fs: Convert kiocb rw_hint from enum to u16
block: add ioprio_check_cap function
Linus Torvalds [Fri, 8 Jun 2018 16:56:38 +0000 (09:56 -0700)]
Merge branch 'work.lookup' of git://git./linux/kernel/git/viro/vfs
Pull proc_fill_cache regression fix from Al Viro:
"Regression fix for proc_fill_cache() braino introduced when switching
instantiate() callback to d_splice_alias()"
* 'work.lookup' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fix proc_fill_cache() in case of d_alloc_parallel() failure
Linus Torvalds [Fri, 8 Jun 2018 16:24:54 +0000 (09:24 -0700)]
Merge tag 'for-linus-4.18-rc1-tag' of git://git./linux/kernel/git/xen/tip
Pull xen updates from Juergen Gross:
"This contains some minor code cleanups (fixing return types of
functions), some fixes for Linux running as Xen PVH guest, and adding
of a new guest resource mapping feature for Xen tools"
* tag 'for-linus-4.18-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/PVH: Make GDT selectors PVH-specific
xen/PVH: Set up GS segment for stack canary
xen/store: do not store local values in xen_start_info
xen-netfront: fix xennet_start_xmit()'s return type
xen/privcmd: add IOCTL_PRIVCMD_MMAP_RESOURCE
xen: Change return type to vm_fault_t
Mark Brown [Fri, 8 Jun 2018 15:27:56 +0000 (16:27 +0100)]
Merge branch 'regulator-4.17' into regulator-4.18 merge window
Corentin Labbe [Wed, 6 Jun 2018 18:45:22 +0000 (18:45 +0000)]
net: stmmac: fix build failure due to missing COMMON_CLK dependency
This patch fix the build failure on m68k;
drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.o: In function `ipq806x_gmac_probe':
dwmac-ipq806x.c:(.text+0xda): undefined reference to `clk_set_rate'
drivers/net/ethernet/stmicro/stmmac/dwmac-rk.o: In function `rk_gmac_probe':
dwmac-rk.c:(.text+0x1e58): undefined reference to `clk_set_rate'
drivers/net/ethernet/stmicro/stmmac/dwmac-sti.o: In function `stid127_fix_retime_src':
dwmac-sti.c:(.text+0xd8): undefined reference to `clk_set_rate'
dwmac-sti.c:(.text+0x114): undefined reference to `clk_set_rate'
drivers/net/ethernet/stmicro/stmmac/dwmac-sti.o:dwmac-sti.c:(.text+0x12c): more undefined references to `clk_set_rate' follow
Lots of stmmac platform drivers need COMMON_CLK in their Kconfig depends.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kent Overstreet [Fri, 8 Jun 2018 00:52:54 +0000 (20:52 -0400)]
md: Unify mddev destruction paths
Previously, mddev_put() had a couple different paths for freeing a
mddev, due to the fact that the kobject wasn't initialized when the
mddev was first allocated. If we move the kobject_init() to when it's
first allocated and just use kobject_add() later, we can clean all this
up.
This also removes a hack in mddev_put() to avoid freeing biosets under a
spinlock, which involved copying biosets on the stack after the reset
bioset_init() changes.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jens Axboe [Thu, 7 Jun 2018 20:42:06 +0000 (14:42 -0600)]
dm: use bioset_init_from_src() to copy bio_set
We can't just copy and clear a bio_set, use the bio helper to
setup a new bio_set with the settings from another one.
Fixes: 6f1c819c219f ("dm: convert to bioset_init()/mempool_init()")
Reported-by: Venkat R.B <vrbagal1@linux.vnet.ibm.com>
Tested-by: Venkat R.B <vrbagal1@linux.vnet.ibm.com>
Tested-by: Li Wang <liwang@redhat.com>
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Jens Axboe [Thu, 7 Jun 2018 20:42:05 +0000 (14:42 -0600)]
block: add bioset_init_from_src() helper
Add a helper that allows a caller to initialize a new bio_set,
using the settings from an existing bio_set.
Reported-by: Venkat R.B <vrbagal1@linux.vnet.ibm.com>
Tested-by: Venkat R.B <vrbagal1@linux.vnet.ibm.com>
Tested-by: Li Wang <liwang@redhat.com>
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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