platform/kernel/linux-rpi.git
3 years agoblock: fix bd_size_lock use
Damien Le Moal [Thu, 28 Jan 2021 06:36:19 +0000 (15:36 +0900)]
block: fix bd_size_lock use

Some block device drivers, e.g. the skd driver, call set_capacity() with
IRQ disabled. This results in lockdep ito complain about inconsistent
lock states ("inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage")
because set_capacity takes a block device bd_size_lock using the
functions spin_lock() and spin_unlock(). Ensure a consistent locking
state by replacing these calls with spin_lock_irqsave() and
spin_lock_irqrestore(). The same applies to bdev_set_nr_sectors().
With this fix, all lockdep complaints are resolved.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoblk-cgroup: Use cond_resched() when destroy blkgs
Baolin Wang [Thu, 28 Jan 2021 05:58:15 +0000 (13:58 +0800)]
blk-cgroup: Use cond_resched() when destroy blkgs

On !PREEMPT kernel, we can get below softlockup when doing stress
testing with creating and destroying block cgroup repeatly. The
reason is it may take a long time to acquire the queue's lock in
the loop of blkcg_destroy_blkgs(), or the system can accumulate a
huge number of blkgs in pathological cases. We can add a need_resched()
check on each loop and release locks and do cond_resched() if true
to avoid this issue, since the blkcg_destroy_blkgs() is not called
from atomic contexts.

[ 4757.010308] watchdog: BUG: soft lockup - CPU#11 stuck for 94s!
[ 4757.010698] Call trace:
[ 4757.010700]  blkcg_destroy_blkgs+0x68/0x150
[ 4757.010701]  cgwb_release_workfn+0x104/0x158
[ 4757.010702]  process_one_work+0x1bc/0x3f0
[ 4757.010704]  worker_thread+0x164/0x468
[ 4757.010705]  kthread+0x108/0x138

Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoRevert "block: simplify set_init_blocksize" to regain lost performance
Maxim Mikityanskiy [Tue, 26 Jan 2021 19:59:07 +0000 (21:59 +0200)]
Revert "block: simplify set_init_blocksize" to regain lost performance

The cited commit introduced a serious regression with SATA write speed,
as found by bisecting. This patch reverts this commit, which restores
write speed back to the values observed before this commit.

The performance tests were done on a Helios4 NAS (2nd batch) with 4 HDDs
(WD8003FFBX) using dd (bs=1M count=2000). "Direct" is a test with a
single HDD, the rest are different RAID levels built over the first
partitions of 4 HDDs. Test results are in MB/s, R is read, W is write.

                | Direct | RAID0 | RAID10 f2 | RAID10 n2 | RAID6
----------------+--------+-------+-----------+-----------+--------
9011495c9466    | R:256  | R:313 | R:276     | R:313     | R:323
(before faulty) | W:254  | W:253 | W:195     | W:204     | W:117
----------------+--------+-------+-----------+-----------+--------
5ff9f19231a0    | R:257  | R:398 | R:312     | R:344     | R:391
(faulty commit) | W:154  | W:122 | W:67.7    | W:66.6    | W:67.2
----------------+--------+-------+-----------+-----------+--------
5.10.10         | R:256  | R:401 | R:312     | R:356     | R:375
unpatched       | W:149  | W:123 | W:64      | W:64.1    | W:61.5
----------------+--------+-------+-----------+-----------+--------
5.10.10         | R:255  | R:396 | R:312     | R:340     | R:393
patched         | W:247  | W:274 | W:220     | W:225     | W:121

Applying this patch doesn't hurt read performance, while improves the
write speed by 1.5x - 3.5x (more impact on RAID tests). The write speed
is restored back to the state before the faulty commit, and even a bit
higher in RAID tests (which aren't HDD-bound on this device) - that is
likely related to other optimizations done between the faulty commit and
5.10.10 which also improved the read speed.

Signed-off-by: Maxim Mikityanskiy <maxtram95@gmail.com>
Fixes: 5ff9f19231a0 ("block: simplify set_init_blocksize")
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@kernel.dk>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agonbd: freeze the queue while we're adding connections
Josef Bacik [Mon, 25 Jan 2021 17:21:02 +0000 (12:21 -0500)]
nbd: freeze the queue while we're adding connections

When setting up a device, we can krealloc the config->socks array to add
new sockets to the configuration.  However if we happen to get a IO
request in at this point even though we aren't setup we could hit a UAF,
as we deref config->socks without any locking, assuming that the
configuration was setup already and that ->socks is safe to access it as
we have a reference on the configuration.

But there's nothing really preventing IO from occurring at this point of
the device setup, we don't want to incur the overhead of a lock to
access ->socks when it will never change while the device is running.
To fix this UAF scenario simply freeze the queue if we are adding
sockets.  This will protect us from this particular case without adding
any additional overhead for the normal running case.

Cc: stable@vger.kernel.org
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agos390/dasd: Fix inconsistent kobject removal
Jan Höppner [Mon, 18 Jan 2021 16:55:18 +0000 (17:55 +0100)]
s390/dasd: Fix inconsistent kobject removal

Our intention was to only remove path kobjects whenever a device is
being set offline. However, one corner case was missing.

If a device is disabled and enabled (using the IOCTLs BIODASDDISABLE and
BIODASDENABLE respectively), the enabling process will call
dasd_eckd_reload_device() which itself calls dasd_eckd_read_conf() in
order to update path information. During that update,
dasd_eckd_clear_conf_data() clears all old data and also removes all
kobjects. This will leave us with an inconsistent state of path kobjects
and a subsequent path verification leads to a failing kobject creation.

Fix this by removing kobjects only in the context of offlining a device
as initially intended.

Fixes: 19508b204740 ("s390/dasd: Display FC Endpoint Security information via sysfs")
Reported-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoblock: Fix an error handling in add_partition
Dinghao Liu [Sun, 17 Jan 2021 08:50:17 +0000 (16:50 +0800)]
block: Fix an error handling in add_partition

Once we have called device_initialize(), we should use put_device() to
give up the reference on error, just like what we have done on failure
of device_add().

Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoblk-mq: test QUEUE_FLAG_HCTX_ACTIVE for sbitmap_shared in hctx_may_queue
Ming Lei [Sun, 27 Dec 2020 11:34:58 +0000 (19:34 +0800)]
blk-mq: test QUEUE_FLAG_HCTX_ACTIVE for sbitmap_shared in hctx_may_queue

In case of blk_mq_is_sbitmap_shared(), we should test QUEUE_FLAG_HCTX_ACTIVE against
q->queue_flags instead of BLK_MQ_S_TAG_ACTIVE.

So fix it.

Cc: John Garry <john.garry@huawei.com>
Cc: Kashyap Desai <kashyap.desai@broadcom.com>
Fixes: f1b49fdc1c64 ("blk-mq: Record active_queues_shared_sbitmap per tag_set for when using shared sbitmap")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agolightnvm: fix memory leak when submit fails
Pan Bian [Thu, 21 Jan 2021 07:22:02 +0000 (23:22 -0800)]
lightnvm: fix memory leak when submit fails

The allocated page is not released if error occurs in
nvm_submit_io_sync_raw(). __free_page() is moved ealier to avoid
possible memory leak issue.

Fixes: aff3fb18f957 ("lightnvm: move bad block and chunk state logic to core")
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoMerge tag 'nvme-5.11-2020-01-21' of git://git.infradead.org/nvme into block-5.11
Jens Axboe [Thu, 21 Jan 2021 12:40:34 +0000 (05:40 -0700)]
Merge tag 'nvme-5.11-2020-01-21' of git://git.infradead.org/nvme into block-5.11

Pull NVMe fixes from Christoph:

"nvme fixes for 5.11:

 - fix a status code in nvmet (Chaitanya Kulkarni)
 - avoid double completions in nvme-rdma/nvme-tcp (Chao Leng)
 - fix the CMB support to cope with NVMe 1.4 controllers (Klaus Jensen)
 - fix PRINFO handling in the passthrough ioctl (Revanth Rajashekar)
 - fix a double DMA unmap in nvme-pci"

* tag 'nvme-5.11-2020-01-21' of git://git.infradead.org/nvme:
  nvme-pci: fix error unwind in nvme_map_data
  nvme-pci: refactor nvme_unmap_data
  nvmet: set right status on error in id-ns handler
  nvme-pci: allow use of cmb on v1.4 controllers
  nvme-tcp: avoid request double completion for concurrent nvme_tcp_timeout
  nvme-rdma: avoid request double completion for concurrent nvme_rdma_timeout
  nvme: check the PRINFO bit before deciding the host buffer length

3 years agonvme-pci: fix error unwind in nvme_map_data
Christoph Hellwig [Wed, 20 Jan 2021 08:35:01 +0000 (09:35 +0100)]
nvme-pci: fix error unwind in nvme_map_data

Properly unwind step by step using refactored helpers from nvme_unmap_data
to avoid a potential double dma_unmap on a mapping failure.

Fixes: 7fe07d14f71f ("nvme-pci: merge nvme_free_iod into nvme_unmap_data")
Reported-by: Marc Orr <marcorr@google.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Marc Orr <marcorr@google.com>
3 years agonvme-pci: refactor nvme_unmap_data
Christoph Hellwig [Wed, 20 Jan 2021 08:33:52 +0000 (09:33 +0100)]
nvme-pci: refactor nvme_unmap_data

Split out three helpers from nvme_unmap_data that will allow finer grained
unwinding from nvme_map_data.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Marc Orr <marcorr@google.com>
3 years agoMerge branch 'md-fixes' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md...
Jens Axboe [Wed, 20 Jan 2021 16:32:02 +0000 (09:32 -0700)]
Merge branch 'md-fixes' of https://git./linux/kernel/git/song/md into block-5.11

Pull MD fix from Song.

* 'md-fixes' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md:
  md: Set prev_flush_start and flush_bio in an atomic way

3 years agomd: Set prev_flush_start and flush_bio in an atomic way
Xiao Ni [Thu, 10 Dec 2020 06:33:32 +0000 (14:33 +0800)]
md: Set prev_flush_start and flush_bio in an atomic way

One customer reports a crash problem which causes by flush request. It
triggers a warning before crash.

        /* new request after previous flush is completed */
        if (ktime_after(req_start, mddev->prev_flush_start)) {
                WARN_ON(mddev->flush_bio);
                mddev->flush_bio = bio;
                bio = NULL;
        }

The WARN_ON is triggered. We use spin lock to protect prev_flush_start and
flush_bio in md_flush_request. But there is no lock protection in
md_submit_flush_data. It can set flush_bio to NULL first because of
compiler reordering write instructions.

For example, flush bio1 sets flush bio to NULL first in
md_submit_flush_data. An interrupt or vmware causing an extended stall
happen between updating flush_bio and prev_flush_start. Because flush_bio
is NULL, flush bio2 can get the lock and submit to underlayer disks. Then
flush bio1 updates prev_flush_start after the interrupt or extended stall.

Then flush bio3 enters in md_flush_request. The start time req_start is
behind prev_flush_start. The flush_bio is not NULL(flush bio2 hasn't
finished). So it can trigger the WARN_ON now. Then it calls INIT_WORK
again. INIT_WORK() will re-initialize the list pointers in the
work_struct, which then can result in a corrupted work list and the
work_struct queued a second time. With the work list corrupted, it can
lead in invalid work items being used and cause a crash in
process_one_work.

We need to make sure only one flush bio can be handled at one same time.
So add spin lock in md_submit_flush_data to protect prev_flush_start and
flush_bio in an atomic way.

Reviewed-by: David Jeffery <djeffery@redhat.com>
Signed-off-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
3 years agonvmet: set right status on error in id-ns handler
Chaitanya Kulkarni [Thu, 14 Jan 2021 01:33:51 +0000 (17:33 -0800)]
nvmet: set right status on error in id-ns handler

The function nvmet_execute_identify_ns() doesn't set the status if call
to nvmet_find_namespace() fails. In that case we set the status of the
request to the value return by the nvmet_copy_sgl().

Set the status to NVME_SC_INVALID_NS and adjust the code such that
request will have the right status on nvmet_find_namespace() failure.

Without this patch :-
NVME Identify Namespace 3:
nsze    : 0
ncap    : 0
nuse    : 0
nsfeat  : 0
nlbaf   : 0
flbas   : 0
mc      : 0
dpc     : 0
dps     : 0
nmic    : 0
rescap  : 0
fpi     : 0
dlfeat  : 0
nawun   : 0
nawupf  : 0
nacwu   : 0
nabsn   : 0
nabo    : 0
nabspf  : 0
noiob   : 0
nvmcap  : 0
mssrl   : 0
mcl     : 0
msrc    : 0
nsattr : 0
nvmsetid: 0
anagrpid: 0
endgid  : 0
nguid   : 00000000000000000000000000000000
eui64   : 0000000000000000
lbaf  0 : ms:0   lbads:0  rp:0 (in use)

With this patch-series :-
feb3b88b501e (HEAD -> nvme-5.11) nvmet: remove extra variable in identify ns
6302aa67210a nvmet: remove extra variable in id-desclist
ed57951da453 nvmet: remove extra variable in smart log nsid
be384b8c24dc nvmet: set right status on error in id-ns handler

NVMe status: INVALID_NS: The namespace or the format of that namespace is invalid(0xb)

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
3 years agonvme-pci: allow use of cmb on v1.4 controllers
Klaus Jensen [Fri, 15 Jan 2021 06:30:46 +0000 (07:30 +0100)]
nvme-pci: allow use of cmb on v1.4 controllers

Since NVMe v1.4 the Controller Memory Buffer must be explicitly enabled
by the host.

Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
[hch: avoid a local variable and add a comment]
Signed-off-by: Christoph Hellwig <hch@lst.de>
3 years agonvme-tcp: avoid request double completion for concurrent nvme_tcp_timeout
Chao Leng [Thu, 14 Jan 2021 09:09:26 +0000 (17:09 +0800)]
nvme-tcp: avoid request double completion for concurrent nvme_tcp_timeout

Each name space has a request queue, if complete request long time,
multi request queues may have time out requests at the same time,
nvme_tcp_timeout will execute concurrently. Multi requests in different
request queues may be queued in the same tcp queue, multi
nvme_tcp_timeout may call nvme_tcp_stop_queue at the same time.
The first nvme_tcp_stop_queue will clear NVME_TCP_Q_LIVE and continue
stopping the tcp queue(cancel io_work), but the others check
NVME_TCP_Q_LIVE is already cleared, and then directly complete the
requests, complete request before the io work is completely canceled may
lead to a use-after-free condition.
Add a multex lock to serialize nvme_tcp_stop_queue.

Signed-off-by: Chao Leng <lengchao@huawei.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
3 years agonvme-rdma: avoid request double completion for concurrent nvme_rdma_timeout
Chao Leng [Thu, 14 Jan 2021 09:09:25 +0000 (17:09 +0800)]
nvme-rdma: avoid request double completion for concurrent nvme_rdma_timeout

A crash happens when inject completing request long time(nearly 30s).
Each name space has a request queue, when inject completing request long
time, multi request queues may have time out requests at the same time,
nvme_rdma_timeout will execute concurrently. Multi requests in different
request queues may be queued in the same rdma queue, multi
nvme_rdma_timeout may call nvme_rdma_stop_queue at the same time.
The first nvme_rdma_timeout will clear NVME_RDMA_Q_LIVE and continue
stopping the rdma queue(drain qp), but the others check NVME_RDMA_Q_LIVE
is already cleared, and then directly complete the requests, complete
request before the qp is fully drained may lead to a use-after-free
condition.

Add a multex lock to serialize nvme_rdma_stop_queue.

Signed-off-by: Chao Leng <lengchao@huawei.com>
Tested-by: Israel Rukshin <israelr@nvidia.com>
Reviewed-by: Israel Rukshin <israelr@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
3 years agonvme: check the PRINFO bit before deciding the host buffer length
Revanth Rajashekar [Fri, 15 Jan 2021 01:55:07 +0000 (18:55 -0700)]
nvme: check the PRINFO bit before deciding the host buffer length

According to NVMe spec v1.4, section 8.3.1, the PRINFO bit and
the metadata size play a vital role in deteriming the host buffer size.

If PRIFNO bit is set and MS==8, the host doesn't add the metadata buffer,
instead the controller adds it.

Signed-off-by: Revanth Rajashekar <revanth.rajashekar@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
3 years agoMerge tag 'nvme-5.11-2021-01-14' of git://git.infradead.org/nvme into block-5.11
Jens Axboe [Thu, 14 Jan 2021 22:17:33 +0000 (15:17 -0700)]
Merge tag 'nvme-5.11-2021-01-14' of git://git.infradead.org/nvme into block-5.11

Pull NVMe fixes from Christoph:

"nvme fixes for 5.11:

 - don't initialize hwmon for discover controllers (Sagi Grimberg)
 - fix iov_iter handling in nvme-tcp (Sagi Grimberg)
 - fix a preempt warning in nvme-tcp (Sagi Grimberg)
 - fix a possible NULL pointer dereference in nvme (Israel Rukshin)"

* tag 'nvme-5.11-2021-01-14' of git://git.infradead.org/nvme:
  nvme: don't intialize hwmon for discovery controllers
  nvme-tcp: fix possible data corruption with bio merges
  nvme-tcp: Fix warning with CONFIG_DEBUG_PREEMPT
  nvmet-rdma: Fix NULL deref when setting pi_enable and traddr INADDR_ANY

3 years agonvme: don't intialize hwmon for discovery controllers
Sagi Grimberg [Thu, 14 Jan 2021 00:00:22 +0000 (16:00 -0800)]
nvme: don't intialize hwmon for discovery controllers

Discovery controllers usually don't support smart log page command.
So when we connect to the discovery controller we see this warning:
nvme nvme0: Failed to read smart log (error 24577)
nvme nvme0: new ctrl: NQN "nqn.2014-08.org.nvmexpress.discovery", addr 192.168.123.1:8009
nvme nvme0: Removing ctrl: NQN "nqn.2014-08.org.nvmexpress.discovery"

Introduce a new helper to understand if the controller is a discovery
controller and use this helper to skip nvme_init_hwmon (also use it in
other places that we check if the controller is a discovery controller).

Fixes: 400b6a7b13a3 ("nvme: Add hardware monitoring support")
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
3 years agonvme-tcp: fix possible data corruption with bio merges
Sagi Grimberg [Wed, 13 Jan 2021 21:56:57 +0000 (13:56 -0800)]
nvme-tcp: fix possible data corruption with bio merges

When a bio merges, we can get a request that spans multiple
bios, and the overall request payload size is the sum of
all bios. When we calculate how much we need to send
from the existing bio (and bvec), we did not take into
account the iov_iter byte count cap.

Since multipage bvecs support, bvecs can split in the middle
which means that when we account for the last bvec send we
should also take the iov_iter byte count cap as it might be
lower than the last bvec size.

Reported-by: Hao Wang <pkuwangh@gmail.com>
Fixes: 3f2304f8c6d6 ("nvme-tcp: add NVMe over TCP host driver")
Tested-by: Hao Wang <pkuwangh@gmail.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
3 years agonvme-tcp: Fix warning with CONFIG_DEBUG_PREEMPT
Sagi Grimberg [Wed, 13 Jan 2021 22:03:04 +0000 (14:03 -0800)]
nvme-tcp: Fix warning with CONFIG_DEBUG_PREEMPT

We shouldn't call smp_processor_id() in a preemptible
context, but this is advisory at best, so instead
call __smp_processor_id().

Fixes: db5ad6b7f8cd ("nvme-tcp: try to send request in queue_rq context")
Reported-by: Or Gerlitz <gerlitz.or@gmail.com>
Reported-by: Yi Zhang <yi.zhang@redhat.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
3 years agonvmet-rdma: Fix NULL deref when setting pi_enable and traddr INADDR_ANY
Israel Rukshin [Sun, 10 Jan 2021 12:09:05 +0000 (14:09 +0200)]
nvmet-rdma: Fix NULL deref when setting pi_enable and traddr INADDR_ANY

When setting port traddr to INADDR_ANY, the listening cm_id->device
is NULL. The associate IB device is known only when a connect request
event arrives, so checking T10-PI device capability should be done
at this stage.

Fixes: b09160c3996c ("nvmet-rdma: add metadata/T10-PI support")
Signed-off-by: Israel Rukshin <israelr@nvidia.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
3 years agobcache: set bcache device into read-only mode for BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET
Coly Li [Mon, 4 Jan 2021 07:41:22 +0000 (15:41 +0800)]
bcache: set bcache device into read-only mode for BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET

If BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET is set in incompat feature
set, it means the cache device is created with obsoleted layout with
obso_bucket_site_hi. Now bcache does not support this feature bit, a new
BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE incompat feature bit is added
for a better layout to support large bucket size.

For the legacy compatibility purpose, if a cache device created with
obsoleted BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET feature bit, all bcache
devices attached to this cache set should be set to read-only. Then the
dirty data can be written back to backing device before re-create the
cache device with BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE feature bit
by the latest bcache-tools.

This patch checks BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET feature bit
when running a cache set and attach a bcache device to the cache set. If
this bit is set,
- When run a cache set, print an error kernel message to indicate all
  following attached bcache device will be read-only.
- When attach a bcache device, print an error kernel message to indicate
  the attached bcache device will be read-only, and ask users to update
  to latest bcache-tools.

Such change is only for cache device whose bucket size >= 32MB, this is
for the zoned SSD and almost nobody uses such large bucket size at this
moment. If you don't explicit set a large bucket size for a zoned SSD,
such change is totally transparent to your bcache device.

Fixes: ffa470327572 ("bcache: add bucket_size_hi into struct cache_sb_disk for large bucket")
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agobcache: introduce BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE for large bucket
Coly Li [Mon, 4 Jan 2021 07:41:21 +0000 (15:41 +0800)]
bcache: introduce BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE for large bucket

When large bucket feature was added, BCH_FEATURE_INCOMPAT_LARGE_BUCKET
was introduced into the incompat feature set. It used bucket_size_hi
(which was added at the tail of struct cache_sb_disk) to extend current
16bit bucket size to 32bit with existing bucket_size in struct
cache_sb_disk.

This is not a good idea, there are two obvious problems,
- Bucket size is always value power of 2, if store log2(bucket size) in
  existing bucket_size of struct cache_sb_disk, it is unnecessary to add
  bucket_size_hi.
- Macro csum_set() assumes d[SB_JOURNAL_BUCKETS] is the last member in
  struct cache_sb_disk, bucket_size_hi was added after d[] which makes
  csum_set calculate an unexpected super block checksum.

To fix the above problems, this patch introduces a new incompat feature
bit BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE, when this bit is set, it
means bucket_size in struct cache_sb_disk stores the order of power-of-2
bucket size value. When user specifies a bucket size larger than 32768
sectors, BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE will be set to
incompat feature set, and bucket_size stores log2(bucket size) more
than store the real bucket size value.

The obsoleted BCH_FEATURE_INCOMPAT_LARGE_BUCKET won't be used anymore,
it is renamed to BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET and still only
recognized by kernel driver for legacy compatible purpose. The previous
bucket_size_hi is renmaed to obso_bucket_size_hi in struct cache_sb_disk
and not used in bcache-tools anymore.

For cache device created with BCH_FEATURE_INCOMPAT_LARGE_BUCKET feature,
bcache-tools and kernel driver still recognize the feature string and
display it as "obso_large_bucket".

With this change, the unnecessary extra space extend of bcache on-disk
super block can be avoided, and csum_set() may generate expected check
sum as well.

Fixes: ffa470327572 ("bcache: add bucket_size_hi into struct cache_sb_disk for large bucket")
Signed-off-by: Coly Li <colyli@suse.de>
Cc: stable@vger.kernel.org # 5.9+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agobcache: check unsupported feature sets for bcache register
Coly Li [Mon, 4 Jan 2021 07:41:20 +0000 (15:41 +0800)]
bcache: check unsupported feature sets for bcache register

This patch adds the check for features which is incompatible for
current supported feature sets.

Now if the bcache device created by bcache-tools has features that
current kernel doesn't support, read_super() will fail with error
messoage. E.g. if an unsupported incompatible feature detected,
bcache register will fail with dmesg "bcache: register_bcache() error :
Unsupported incompatible feature found".

Fixes: d721a43ff69c ("bcache: increase super block version for cache device and backing device")
Fixes: ffa470327572 ("bcache: add bucket_size_hi into struct cache_sb_disk for large bucket")
Signed-off-by: Coly Li <colyli@suse.de>
Cc: stable@vger.kernel.org # 5.9+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agobcache: fix typo from SUUP to SUPP in features.h
Coly Li [Mon, 4 Jan 2021 07:41:19 +0000 (15:41 +0800)]
bcache: fix typo from SUUP to SUPP in features.h

This patch fixes the following typos,
from BCH_FEATURE_COMPAT_SUUP to BCH_FEATURE_COMPAT_SUPP
from BCH_FEATURE_INCOMPAT_SUUP to BCH_FEATURE_INCOMPAT_SUPP
from BCH_FEATURE_INCOMPAT_SUUP to BCH_FEATURE_RO_COMPAT_SUPP

Fixes: d721a43ff69c ("bcache: increase super block version for cache device and backing device")
Fixes: ffa470327572 ("bcache: add bucket_size_hi into struct cache_sb_disk for large bucket")
Signed-off-by: Coly Li <colyli@suse.de>
Cc: stable@vger.kernel.org # 5.9+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agobcache: set pdev_set_uuid before scond loop iteration
Yi Li [Mon, 4 Jan 2021 07:41:18 +0000 (15:41 +0800)]
bcache: set pdev_set_uuid before scond loop iteration

There is no need to reassign pdev_set_uuid in the second loop iteration,
so move it to the place before second loop.

Signed-off-by: Yi Li <yili@winhong.com>
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoblk-mq-debugfs: Add decode for BLK_MQ_F_TAG_HCTX_SHARED
John Garry [Fri, 8 Jan 2021 08:55:37 +0000 (16:55 +0800)]
blk-mq-debugfs: Add decode for BLK_MQ_F_TAG_HCTX_SHARED

Showing the hctx flags for when BLK_MQ_F_TAG_HCTX_SHARED is set gives
something like:

root@debian:/home/john# more /sys/kernel/debug/block/sda/hctx0/flags
alloc_policy=FIFO SHOULD_MERGE|TAG_QUEUE_SHARED|3

Add the decoding for that flag.

Fixes: 32bc15afed04b ("blk-mq: Facilitate a shared sbitmap per tagset")
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoblock/rnbd-clt: avoid module unload race with close confirmation
Jack Wang [Fri, 8 Jan 2021 14:36:34 +0000 (15:36 +0100)]
block/rnbd-clt: avoid module unload race with close confirmation

We had kernel panic, it is caused by unload module and last
close confirmation.

call trace:
[1196029.743127]  free_sess+0x15/0x50 [rtrs_client]
[1196029.743128]  rtrs_clt_close+0x4c/0x70 [rtrs_client]
[1196029.743129]  ? rnbd_clt_unmap_device+0x1b0/0x1b0 [rnbd_client]
[1196029.743130]  close_rtrs+0x25/0x50 [rnbd_client]
[1196029.743131]  rnbd_client_exit+0x93/0xb99 [rnbd_client]
[1196029.743132]  __x64_sys_delete_module+0x190/0x260

And in the crashdump confirmation kworker is also running.
PID: 6943   TASK: ffff9e2ac8098000  CPU: 4   COMMAND: "kworker/4:2"
 #0 [ffffb206cf337c30] __schedule at ffffffff9f93f891
 #1 [ffffb206cf337cc8] schedule at ffffffff9f93fe98
 #2 [ffffb206cf337cd0] schedule_timeout at ffffffff9f943938
 #3 [ffffb206cf337d50] wait_for_completion at ffffffff9f9410a7
 #4 [ffffb206cf337da0] __flush_work at ffffffff9f08ce0e
 #5 [ffffb206cf337e20] rtrs_clt_close_conns at ffffffffc0d5f668 [rtrs_client]
 #6 [ffffb206cf337e48] rtrs_clt_close at ffffffffc0d5f801 [rtrs_client]
 #7 [ffffb206cf337e68] close_rtrs at ffffffffc0d26255 [rnbd_client]
 #8 [ffffb206cf337e78] free_sess at ffffffffc0d262ad [rnbd_client]
 #9 [ffffb206cf337e88] rnbd_clt_put_dev at ffffffffc0d266a7 [rnbd_client]

The problem is both code path try to close same session, which lead to
panic.

To fix it, just skip the sess if the refcount already drop to 0.

Fixes: f7a7a5c228d4 ("block/rnbd: client: main functionality")
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Reviewed-by: Gioh Kim <gi-oh.kim@cloud.ionos.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoblock/rnbd: Adding name to the Contributors List
Swapnil Ingle [Fri, 8 Jan 2021 14:36:33 +0000 (15:36 +0100)]
block/rnbd: Adding name to the Contributors List

Adding name to the Contributors List

Signed-off-by: Swapnil Ingle <ingleswapnil@gmail.com>
Acked-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Acked-by: Danil Kipnis <danil.kipnis@cloud.ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoblock/rnbd-clt: Fix sg table use after free
Guoqing Jiang [Fri, 8 Jan 2021 14:36:32 +0000 (15:36 +0100)]
block/rnbd-clt: Fix sg table use after free

Since dynamically allocate sglist is used for rnbd_iu, we can't free sg
table after send_usr_msg since the callback function (cqe.done) could
still access the sglist.

Otherwise KASAN reports UAF issue:

[ 4856.600257] BUG: KASAN: use-after-free in dma_direct_unmap_sg+0x53/0x290
[ 4856.600772] Read of size 4 at addr ffff888206af3a98 by task swapper/1/0

[ 4856.601729] CPU: 1 PID: 0 Comm: swapper/1 Kdump: loaded Tainted: G        W         5.10.0-pserver #5.10.0-1+feature+linux+next+20201214.1025+0910d71
[ 4856.601748] Hardware name: Supermicro Super Server/X11DDW-L, BIOS 3.3 02/21/2020
[ 4856.601766] Call Trace:
[ 4856.601785]  <IRQ>
[ 4856.601822]  dump_stack+0x99/0xcb
[ 4856.601856]  ? dma_direct_unmap_sg+0x53/0x290
[ 4856.601888]  print_address_description.constprop.7+0x1e/0x230
[ 4856.601913]  ? freeze_kernel_threads+0x73/0x73
[ 4856.601965]  ? mark_held_locks+0x29/0xa0
[ 4856.602019]  ? dma_direct_unmap_sg+0x53/0x290
[ 4856.602039]  ? dma_direct_unmap_sg+0x53/0x290
[ 4856.602079]  kasan_report.cold.9+0x37/0x7c
[ 4856.602188]  ? mlx5_ib_post_recv+0x430/0x520 [mlx5_ib]
[ 4856.602209]  ? dma_direct_unmap_sg+0x53/0x290
[ 4856.602256]  dma_direct_unmap_sg+0x53/0x290
[ 4856.602366]  complete_rdma_req+0x188/0x4b0 [rtrs_client]
[ 4856.602451]  ? rtrs_clt_close+0x80/0x80 [rtrs_client]
[ 4856.602535]  ? mlx5_ib_poll_cq+0x48b/0x16e0 [mlx5_ib]
[ 4856.602589]  ? radix_tree_insert+0x3a0/0x3a0
[ 4856.602610]  ? do_raw_spin_lock+0x119/0x1d0
[ 4856.602647]  ? rwlock_bug.part.1+0x60/0x60
[ 4856.602740]  rtrs_clt_rdma_done+0x3f7/0x670 [rtrs_client]
[ 4856.602804]  ? rtrs_clt_rdma_cm_handler+0xda0/0xda0 [rtrs_client]
[ 4856.602857]  ? check_flags.part.31+0x6c/0x1f0
[ 4856.602927]  ? rcu_read_lock_sched_held+0xaf/0xe0
[ 4856.602963]  ? rcu_read_lock_bh_held+0xc0/0xc0
[ 4856.603137]  __ib_process_cq+0x10a/0x350 [ib_core]
[ 4856.603309]  ib_poll_handler+0x41/0x1c0 [ib_core]
[ 4856.603358]  irq_poll_softirq+0xe6/0x280
[ 4856.603392]  ? lockdep_hardirqs_on_prepare+0x111/0x210
[ 4856.603446]  __do_softirq+0x10d/0x646
[ 4856.603540]  asm_call_irq_on_stack+0x12/0x20
[ 4856.603563]  </IRQ>

[ 4856.605096] Allocated by task 8914:
[ 4856.605510]  kasan_save_stack+0x19/0x40
[ 4856.605532]  __kasan_kmalloc.constprop.7+0xc1/0xd0
[ 4856.605552]  __kmalloc+0x155/0x320
[ 4856.605574]  __sg_alloc_table+0x155/0x1c0
[ 4856.605594]  sg_alloc_table+0x1f/0x50
[ 4856.605620]  send_msg_sess_info+0x119/0x2e0 [rnbd_client]
[ 4856.605646]  remap_devs+0x71/0x210 [rnbd_client]
[ 4856.605676]  init_sess+0xad8/0xe10 [rtrs_client]
[ 4856.605706]  rtrs_clt_reconnect_work+0xd6/0x170 [rtrs_client]
[ 4856.605728]  process_one_work+0x521/0xa90
[ 4856.605748]  worker_thread+0x65/0x5b0
[ 4856.605769]  kthread+0x1f2/0x210
[ 4856.605789]  ret_from_fork+0x22/0x30

[ 4856.606159] Freed by task 8914:
[ 4856.606559]  kasan_save_stack+0x19/0x40
[ 4856.606580]  kasan_set_track+0x1c/0x30
[ 4856.606601]  kasan_set_free_info+0x1b/0x30
[ 4856.606622]  __kasan_slab_free+0x108/0x150
[ 4856.606642]  slab_free_freelist_hook+0x64/0x190
[ 4856.606661]  kfree+0xe2/0x650
[ 4856.606681]  __sg_free_table+0xa4/0x100
[ 4856.606707]  send_msg_sess_info+0x1d6/0x2e0 [rnbd_client]
[ 4856.606733]  remap_devs+0x71/0x210 [rnbd_client]
[ 4856.606763]  init_sess+0xad8/0xe10 [rtrs_client]
[ 4856.606792]  rtrs_clt_reconnect_work+0xd6/0x170 [rtrs_client]
[ 4856.606813]  process_one_work+0x521/0xa90
[ 4856.606833]  worker_thread+0x65/0x5b0
[ 4856.606853]  kthread+0x1f2/0x210
[ 4856.606872]  ret_from_fork+0x22/0x30

The solution is to free iu's sgtable after the iu is not used anymore.
And also move sg_alloc_table into rnbd_get_iu accordingly.

Fixes: 5a1328d0c3a7 ("block/rnbd-clt: Dynamically allocate sglist for rnbd_iu")
Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoblock/rnbd-srv: Fix use after free in rnbd_srv_sess_dev_force_close
Jack Wang [Fri, 8 Jan 2021 14:36:31 +0000 (15:36 +0100)]
block/rnbd-srv: Fix use after free in rnbd_srv_sess_dev_force_close

KASAN detect following BUG:
[  778.215311] ==================================================================
[  778.216696] BUG: KASAN: use-after-free in rnbd_srv_sess_dev_force_close+0x38/0x60 [rnbd_server]
[  778.219037] Read of size 8 at addr ffff88b1d6516c28 by task tee/8842

[  778.220500] CPU: 37 PID: 8842 Comm: tee Kdump: loaded Not tainted 5.10.0-pserver #5.10.0-1+feature+linux+next+20201214.1025+0910d71
[  778.220529] Hardware name: Supermicro Super Server/X11DDW-L, BIOS 3.3 02/21/2020
[  778.220555] Call Trace:
[  778.220609]  dump_stack+0x99/0xcb
[  778.220667]  ? rnbd_srv_sess_dev_force_close+0x38/0x60 [rnbd_server]
[  778.220715]  print_address_description.constprop.7+0x1e/0x230
[  778.220750]  ? freeze_kernel_threads+0x73/0x73
[  778.220896]  ? rnbd_srv_sess_dev_force_close+0x38/0x60 [rnbd_server]
[  778.220932]  ? rnbd_srv_sess_dev_force_close+0x38/0x60 [rnbd_server]
[  778.220994]  kasan_report.cold.9+0x37/0x7c
[  778.221066]  ? kobject_put+0x80/0x270
[  778.221102]  ? rnbd_srv_sess_dev_force_close+0x38/0x60 [rnbd_server]
[  778.221184]  rnbd_srv_sess_dev_force_close+0x38/0x60 [rnbd_server]
[  778.221240]  rnbd_srv_dev_session_force_close_store+0x6a/0xc0 [rnbd_server]
[  778.221304]  ? sysfs_file_ops+0x90/0x90
[  778.221353]  kernfs_fop_write+0x141/0x240
[  778.221451]  vfs_write+0x142/0x4d0
[  778.221553]  ksys_write+0xc0/0x160
[  778.221602]  ? __ia32_sys_read+0x50/0x50
[  778.221684]  ? lockdep_hardirqs_on_prepare+0x13d/0x210
[  778.221718]  ? syscall_enter_from_user_mode+0x1c/0x50
[  778.221821]  do_syscall_64+0x33/0x40
[  778.221862]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  778.221896] RIP: 0033:0x7f4affdd9504
[  778.221928] Code: 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b3 0f 1f 80 00 00 00 00 48 8d 05 f9 61 0d 00 8b 00 85 c0 75 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 41 54 49 89 d4 55 48 89 f5 53
[  778.221956] RSP: 002b:00007fffebb36b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  778.222011] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f4affdd9504
[  778.222038] RDX: 0000000000000002 RSI: 00007fffebb36c50 RDI: 0000000000000003
[  778.222066] RBP: 00007fffebb36c50 R08: 0000556a151aa600 R09: 00007f4affeb1540
[  778.222094] R10: fffffffffffffc19 R11: 0000000000000246 R12: 0000556a151aa520
[  778.222121] R13: 0000000000000002 R14: 00007f4affea6760 R15: 0000000000000002

[  778.222764] Allocated by task 3212:
[  778.223285]  kasan_save_stack+0x19/0x40
[  778.223316]  __kasan_kmalloc.constprop.7+0xc1/0xd0
[  778.223347]  kmem_cache_alloc_trace+0x186/0x350
[  778.223382]  rnbd_srv_rdma_ev+0xf16/0x1690 [rnbd_server]
[  778.223422]  process_io_req+0x4d1/0x670 [rtrs_server]
[  778.223573]  __ib_process_cq+0x10a/0x350 [ib_core]
[  778.223709]  ib_cq_poll_work+0x31/0xb0 [ib_core]
[  778.223743]  process_one_work+0x521/0xa90
[  778.223773]  worker_thread+0x65/0x5b0
[  778.223802]  kthread+0x1f2/0x210
[  778.223833]  ret_from_fork+0x22/0x30

[  778.224296] Freed by task 8842:
[  778.224800]  kasan_save_stack+0x19/0x40
[  778.224829]  kasan_set_track+0x1c/0x30
[  778.224860]  kasan_set_free_info+0x1b/0x30
[  778.224889]  __kasan_slab_free+0x108/0x150
[  778.224919]  slab_free_freelist_hook+0x64/0x190
[  778.224947]  kfree+0xe2/0x650
[  778.224982]  rnbd_destroy_sess_dev+0x2fa/0x3b0 [rnbd_server]
[  778.225011]  kobject_put+0xda/0x270
[  778.225046]  rnbd_srv_sess_dev_force_close+0x30/0x60 [rnbd_server]
[  778.225081]  rnbd_srv_dev_session_force_close_store+0x6a/0xc0 [rnbd_server]
[  778.225111]  kernfs_fop_write+0x141/0x240
[  778.225140]  vfs_write+0x142/0x4d0
[  778.225169]  ksys_write+0xc0/0x160
[  778.225198]  do_syscall_64+0x33/0x40
[  778.225227]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

[  778.226506] The buggy address belongs to the object at ffff88b1d6516c00
                which belongs to the cache kmalloc-512 of size 512
[  778.227464] The buggy address is located 40 bytes inside of
                512-byte region [ffff88b1d6516c00ffff88b1d6516e00)

The problem is in the sess_dev release function we call
rnbd_destroy_sess_dev, and could free the sess_dev already, but we still
set the keep_id in rnbd_srv_sess_dev_force_close, which lead to use
after free.

To fix it, move the keep_id before the sysfs removal, and cache the
rnbd_srv_session for lock accessing,

Fixes: 786998050cbc ("block/rnbd-srv: close a mapped device from server side.")
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Reviewed-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoblock/rnbd: Select SG_POOL for RNBD_CLIENT
Jack Wang [Fri, 8 Jan 2021 14:36:30 +0000 (15:36 +0100)]
block/rnbd: Select SG_POOL for RNBD_CLIENT

lkp reboot following build error:
 drivers/block/rnbd/rnbd-clt.c: In function 'rnbd_softirq_done_fn':
>> drivers/block/rnbd/rnbd-clt.c:387:2: error: implicit declaration of function 'sg_free_table_chained' [-Werror=implicit-function-declaration]
     387 |  sg_free_table_chained(&iu->sgt, RNBD_INLINE_SG_CNT);
         |  ^~~~~~~~~~~~~~~~~~~~~

The reason is CONFIG_SG_POOL is not enabled in the config, to
avoid such failure, select SG_POOL in Kconfig for RNBD_CLIENT.

Fixes: 5a1328d0c3a7 ("block/rnbd-clt: Dynamically allocate sglist for rnbd_iu")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoblock: pre-initialize struct block_device in bdev_alloc_inode
Christoph Hellwig [Thu, 7 Jan 2021 18:36:40 +0000 (19:36 +0100)]
block: pre-initialize struct block_device in bdev_alloc_inode

bdev_evict_inode and bdev_free_inode are also called for the root inode
of bdevfs, for which bdev_alloc is never called.  Move the zeroing o
f struct block_device and the initialization of the bd_bdi field into
bdev_alloc_inode to make sure they are initialized for the root inode
as well.

Fixes: e6cb53827ed6 ("block: initialize struct block_device in bdev_alloc")
Reported-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Tested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoMerge tag 'nvme-5.11-2021-01-07' of git://git.infradead.org/nvme into block-5.11
Jens Axboe [Thu, 7 Jan 2021 17:57:54 +0000 (10:57 -0700)]
Merge tag 'nvme-5.11-2021-01-07' of git://git.infradead.org/nvme into block-5.11

Pull NVMe updates from Christoph:

"nvme updates for 5.11:

 - fix a race in the nvme-tcp send code (Sagi Grimberg)
 - fix a list corruption in an nvme-rdma error path (Israel Rukshin)
 - avoid a possible double fetch in nvme-pci (Lalithambika Krishnakumar)
 - add the susystem NQN quirk for a Samsung driver (Gopal Tiwari)
 - fix two compiler warnings in nvme-fcloop (James Smart)
 - don't call sleeping functions from irq context in nvme-fc (James Smart)
 - remove an unused argument (Max Gurtovoy)
 - remove unused exports (Minwoo Im)"

* tag 'nvme-5.11-2021-01-07' of git://git.infradead.org/nvme:
  nvme: remove the unused status argument from nvme_trace_bio_complete
  nvmet-rdma: Fix list_del corruption on queue establishment failure
  nvme: unexport functions with no external caller
  nvme: avoid possible double fetch in handling CQE
  nvme-tcp: Fix possible race of io_work and direct send
  nvme-pci: mark Samsung PM1725a as IGNORE_DEV_SUBNQN
  nvme-fcloop: Fix sscanf type and list_first_entry_or_null warnings
  nvme-fc: avoid calling _nvme_fc_abort_outstanding_ios from interrupt context

3 years agofs: Fix freeze_bdev()/thaw_bdev() accounting of bd_fsfreeze_sb
Satya Tangirala [Thu, 24 Dec 2020 04:49:54 +0000 (04:49 +0000)]
fs: Fix freeze_bdev()/thaw_bdev() accounting of bd_fsfreeze_sb

freeze/thaw_bdev() currently use bdev->bd_fsfreeze_count to infer
whether or not bdev->bd_fsfreeze_sb is valid (it's valid iff
bd_fsfreeze_count is non-zero). thaw_bdev() doesn't nullify
bd_fsfreeze_sb.

But this means a freeze_bdev() call followed by a thaw_bdev() call can
leave bd_fsfreeze_sb with a non-null value, while bd_fsfreeze_count is
zero. If freeze_bdev() is called again, and this time
get_active_super() returns NULL (e.g. because the FS is unmounted),
we'll end up with bd_fsfreeze_count > 0, but bd_fsfreeze_sb is
*untouched* - it stays the same (now garbage) value. A subsequent
thaw_bdev() will decide that the bd_fsfreeze_sb value is legitimate
(since bd_fsfreeze_count > 0), and attempt to use it.

Fix this by always setting bd_fsfreeze_sb to NULL when
bd_fsfreeze_count is successfully decremented to 0 in thaw_sb().
Alternatively, we could set bd_fsfreeze_sb to whatever
get_active_super() returns in freeze_bdev() whenever bd_fsfreeze_count
is successfully incremented to 1 from 0 (which can be achieved cleanly
by moving the line currently setting bd_fsfreeze_sb to immediately
after the "sync:" label, but it might be a little too subtle/easily
overlooked in future).

This fixes the currently panicking xfstests generic/085.

Fixes: 040f04bd2e82 ("fs: simplify freeze_bdev/thaw_bdev")
Signed-off-by: Satya Tangirala <satyat@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agonvme: remove the unused status argument from nvme_trace_bio_complete
Max Gurtovoy [Tue, 5 Jan 2021 10:34:02 +0000 (10:34 +0000)]
nvme: remove the unused status argument from nvme_trace_bio_complete

The only used argument in this function is the "req".

Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
3 years agonvmet-rdma: Fix list_del corruption on queue establishment failure
Israel Rukshin [Tue, 5 Jan 2021 08:46:54 +0000 (10:46 +0200)]
nvmet-rdma: Fix list_del corruption on queue establishment failure

When a queue is in NVMET_RDMA_Q_CONNECTING state, it may has some
requests at rsp_wait_list. In case a disconnect occurs at this
state, no one will empty this list and will return the requests to
free_rsps list. Normally nvmet_rdma_queue_established() free those
requests after moving the queue to NVMET_RDMA_Q_LIVE state, but in
this case __nvmet_rdma_queue_disconnect() is called before. The
crash happens at nvmet_rdma_free_rsps() when calling
list_del(&rsp->free_list), because the request exists only at
the wait list. To fix the issue, simply clear rsp_wait_list when
destroying the queue.

Signed-off-by: Israel Rukshin <israelr@nvidia.com>
Reviewed-by: Max Gurtovoy <mgurtovoy@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
3 years agonvme: unexport functions with no external caller
Minwoo Im [Wed, 30 Dec 2020 11:22:44 +0000 (20:22 +0900)]
nvme: unexport functions with no external caller

There are no callers for nvme_reset_ctrl_sync() and
nvme_alloc_request_qid() so that we keep the symbols exported.

Unexport those functions, mark them static and update the header file
respectively.

Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
3 years agonvme: avoid possible double fetch in handling CQE
Lalithambika Krishnakumar [Wed, 23 Dec 2020 22:09:00 +0000 (14:09 -0800)]
nvme: avoid possible double fetch in handling CQE

While handling the completion queue, keep a local copy of the command id
from the DMA-accessible completion entry. This silences a time-of-check
to time-of-use (TOCTOU) warning from KF/x[1], with respect to a
Thunderclap[2] vulnerability analysis. The double-read impact appears
benign.

There may be a theoretical window for @command_id to be used as an
adversary-controlled array-index-value for mounting a speculative
execution attack, but that mitigation is saved for a potential follow-on.
A man-in-the-middle attack on the data payload is out of scope for this
analysis and is hopefully mitigated by filesystem integrity mechanisms.

[1] https://github.com/intel/kernel-fuzzer-for-xen-project
[2] http://thunderclap.io/thunderclap-paper-ndss2019.pdf
Signed-off-by: Lalithambika Krishna Kumar <lalithambika.krishnakumar@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
3 years agonvme-tcp: Fix possible race of io_work and direct send
Sagi Grimberg [Mon, 21 Dec 2020 08:03:39 +0000 (00:03 -0800)]
nvme-tcp: Fix possible race of io_work and direct send

We may send a request (with or without its data) from two paths:

  1. From our I/O context nvme_tcp_io_work which is triggered from:
    - queue_rq
    - r2t reception
    - socket data_ready and write_space callbacks
  2. Directly from queue_rq if the send_list is empty (because we want to
     save the context switch associated with scheduling our io_work).

However, given that now we have the send_mutex, we may run into a race
condition where none of these contexts will send the pending payload to
the controller. Both io_work send path and queue_rq send path
opportunistically attempt to acquire the send_mutex however queue_rq only
attempts to send a single request, and if io_work context fails to
acquire the send_mutex it will complete without rescheduling itself.

The race can trigger with the following sequence:

  1. queue_rq sends request (no incapsule data) and blocks
  2. RX path receives r2t - prepares data PDU to send, adds h2cdata PDU
     to the send_list and schedules io_work
  3. io_work triggers and cannot acquire the send_mutex - because of (1),
     ends without self rescheduling
  4. queue_rq completes the send, and completes

==> no context will send the h2cdata - timeout.

Fix this by having queue_rq sending as much as it can from the send_list
such that if it still has any left, its because the socket buffer is
full and the socket write_space callback will trigger, thus guaranteeing
that a context will be scheduled to send the h2cdata PDU.

Fixes: db5ad6b7f8cd ("nvme-tcp: try to send request in queue_rq context")
Reported-by: Potnuri Bharat Teja <bharat@chelsio.com>
Reported-by: Samuel Jones <sjones@kalrayinc.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Tested-by: Potnuri Bharat Teja <bharat@chelsio.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
3 years agonvme-pci: mark Samsung PM1725a as IGNORE_DEV_SUBNQN
Gopal Tiwari [Fri, 4 Dec 2020 16:16:57 +0000 (21:46 +0530)]
nvme-pci: mark Samsung PM1725a as IGNORE_DEV_SUBNQN

A system with more than one of these SSDs will only have one usable.
Hence the kernel fails to detect nvme devices due to duplicate cntlids.

[    6.274554] nvme nvme1: Duplicate cntlid 33 with nvme0, rejecting
[    6.274566] nvme nvme1: Removing after probe failure status: -22

Adding the NVME_QUIRK_IGNORE_DEV_SUBNQN quirk to resolves the issue.

Signed-off-by: Gopal Tiwari <gtiwari@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
3 years agonvme-fcloop: Fix sscanf type and list_first_entry_or_null warnings
James Smart [Mon, 7 Dec 2020 20:29:40 +0000 (12:29 -0800)]
nvme-fcloop: Fix sscanf type and list_first_entry_or_null warnings

Kernel robot had the following warnings:

>> fcloop.c:1506:6: warning: %x in format string (no. 1) requires
>> 'unsigned int *' but the argument type is 'signed int *'.
>> [invalidScanfArgType_int]
>>    if (sscanf(buf, "%x:%d:%d", &opcode, &starting, &amount) != 3)
>>        ^

Resolve by changing opcode from and int to an unsigned int

and

>>  fcloop.c:1632:32: warning: Uninitialized variable: lport [uninitvar]
>>     ret = __wait_localport_unreg(lport);
>>                                  ^

>>  fcloop.c:1615:28: warning: Uninitialized variable: nport [uninitvar]
>>     ret = __remoteport_unreg(nport, rport);
>>                              ^

These aren't actual issues as the values are assigned prior to use.
It appears the tool doesn't understand list_first_entry_or_null().
Regardless, quiet the tool by initializing the pointers to NULL at
declaration.

Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
3 years agonvme-fc: avoid calling _nvme_fc_abort_outstanding_ios from interrupt context
James Smart [Wed, 2 Dec 2020 01:52:43 +0000 (17:52 -0800)]
nvme-fc: avoid calling _nvme_fc_abort_outstanding_ios from interrupt context

Recent patches changed calling sequences. nvme_fc_abort_outstanding_ios
used to be called from a timeout or work context. Now it is being called
in an io completion context, which can be an interrupt handler.
Unfortunately, the abort outstanding ios routine attempts to stop nvme
queues and nested routines that may try to sleep, which is in conflict
with the interrupt handler.

Correct replacing the direct call with a work element scheduling, and the
abort outstanding ios routine will be called in the work element.

Fixes: 95ced8a2c72d ("nvme-fc: eliminate terminate_io use by nvme_fc_error_recovery")
Signed-off-by: James Smart <james.smart@broadcom.com>
Reported-by: Daniel Wagner <dwagner@suse.de>
Tested-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
3 years agoblock: fix use-after-free in disk_part_iter_next
Ming Lei [Mon, 21 Dec 2020 04:33:35 +0000 (12:33 +0800)]
block: fix use-after-free in disk_part_iter_next

Make sure that bdgrab() is done on the 'block_device' instance before
referring to it for avoiding use-after-free.

Cc: <stable@vger.kernel.org>
Reported-by: syzbot+825f0f9657d4e528046e@syzkaller.appspotmail.com
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agobfq: Fix computation of shallow depth
Jan Kara [Thu, 10 Dec 2020 09:44:33 +0000 (10:44 +0100)]
bfq: Fix computation of shallow depth

BFQ computes number of tags it allows to be allocated for each request type
based on tag bitmap. However it uses 1 << bitmap.shift as number of
available tags which is wrong. 'shift' is just an internal bitmap value
containing logarithm of how many bits bitmap uses in each bitmap word.
Thus number of tags allowed for some request types can be far to low.
Use proper bitmap.depth which has the number of tags instead.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoblk-iocost: fix NULL iocg deref from racing against initialization
Tejun Heo [Tue, 5 Jan 2021 17:37:23 +0000 (12:37 -0500)]
blk-iocost: fix NULL iocg deref from racing against initialization

When initializing iocost for a queue, its rqos should be registered before
the blkcg policy is activated to allow policy data initiailization to lookup
the associated ioc. This unfortunately means that the rqos methods can be
called on bios before iocgs are attached to all existing blkgs.

While the race is theoretically possible on ioc_rqos_throttle(), it mostly
happened in ioc_rqos_merge() due to the difference in how they lookup ioc.
The former determines it from the passed in @rqos and then bails before
dereferencing iocg if the looked up ioc is disabled, which most likely is
the case if initialization is still in progress. The latter looked up ioc by
dereferencing the possibly NULL iocg making it a lot more prone to actually
triggering the bug.

* Make ioc_rqos_merge() use the same method as ioc_rqos_throttle() to look
  up ioc for consistency.

* Make ioc_rqos_throttle() and ioc_rqos_merge() test for NULL iocg before
  dereferencing it.

* Explain the danger of NULL iocgs in blk_iocost_init().

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Jonathan Lemon <bsd@fb.com>
Cc: stable@vger.kernel.org # v5.4+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agolightnvm: select CONFIG_CRC32
Arnd Bergmann [Sun, 3 Jan 2021 21:43:09 +0000 (22:43 +0100)]
lightnvm: select CONFIG_CRC32

Without CRC32 support, this fails to link:

arm-linux-gnueabi-ld: drivers/lightnvm/pblk-init.o: in function `pblk_init':
pblk-init.c:(.text+0x2654): undefined reference to `crc32_le'
arm-linux-gnueabi-ld: drivers/lightnvm/pblk-init.o: in function `pblk_exit':
pblk-init.c:(.text+0x2a7c): undefined reference to `crc32_le'

Fixes: a4bd217b4326 ("lightnvm: physical block device (pblk) target")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoblock: rsxx: select CONFIG_CRC32
Arnd Bergmann [Sun, 3 Jan 2021 21:42:39 +0000 (22:42 +0100)]
block: rsxx: select CONFIG_CRC32

Without crc32, the driver fails to link:

arm-linux-gnueabi-ld: drivers/block/rsxx/config.o: in function `rsxx_load_config':
config.c:(.text+0x124): undefined reference to `crc32_le'

Fixes: 8722ff8cdbfa ("block: IBM RamSan 70/80 device driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoblock: add debugfs stanza for QUEUE_FLAG_NOWAIT
Andres Freund [Mon, 28 Dec 2020 19:27:18 +0000 (11:27 -0800)]
block: add debugfs stanza for QUEUE_FLAG_NOWAIT

This was missed in 021a24460dc2. Leads to the numeric value of
QUEUE_FLAG_NOWAIT (i.e. 29) showing up in
/sys/kernel/debug/block/*/state.

Fixes: 021a24460dc28e7412aecfae89f60e1847e685c0
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Mike Snitzer <snitzer@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andres Freund <andres@anarazel.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agofs: block_dev.c: fix kernel-doc warnings from struct block_device changes
Randy Dunlap [Tue, 29 Dec 2020 03:47:06 +0000 (19:47 -0800)]
fs: block_dev.c: fix kernel-doc warnings from struct block_device changes

Fix new kernel-doc warnings in fs/block_dev.c:

../fs/block_dev.c:1066: warning: Excess function parameter 'whole' description in 'bd_abort_claiming'
../fs/block_dev.c:1837: warning: Function parameter or member 'dev' not described in 'lookup_bdev'

Fixes: 4e7b5671c6a8 ("block: remove i_bdev")
Fixes: 37c3fc9abb25 ("block: simplify the block device claiming interface")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Christoph Hellwig <hch@lst.de>
Cc: linux-fsdevel@vger.kernel.org
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
3 years agoLinux 5.11-rc1
Linus Torvalds [Sun, 27 Dec 2020 23:30:22 +0000 (15:30 -0800)]
Linux 5.11-rc1

3 years agoproc mountinfo: make splice available again
Linus Torvalds [Sun, 27 Dec 2020 18:56:33 +0000 (10:56 -0800)]
proc mountinfo: make splice available again

Since commit 36e2c7421f02 ("fs: don't allow splice read/write without
explicit ops") we've required that file operation structures explicitly
enable splice support, rather than falling back to the default handlers.

Most /proc files use the indirect 'struct proc_ops' to describe their
file operations, and were fixed up to support splice earlier in commits
40be821d627c..b24c30c67863, but the mountinfo files interact with the
VFS directly using their own 'struct file_operations' and got missed as
a result.

This adds the necessary support for splice to work for /proc/*/mountinfo
and friends.

Reported-by: Joan Bruguera Micó <joanbrugueram@gmail.com>
Reported-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=209971
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge tag 'ntb-5.11' of git://github.com/jonmason/ntb
Linus Torvalds [Sun, 27 Dec 2020 17:22:55 +0000 (09:22 -0800)]
Merge tag 'ntb-5.11' of git://github.com/jonmason/ntb

Pull NTB fixes from Jon Mason:
 "Bug fix for IDT NTB and Intel NTB LTR management support"

* tag 'ntb-5.11' of git://github.com/jonmason/ntb:
  ntb: intel: add Intel NTB LTR vendor support for gen4 NTB
  ntb: idt: fix error check in ntb_hw_idt.c

3 years agoMerge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Sun, 27 Dec 2020 17:14:32 +0000 (09:14 -0800)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:
 "Fix a number of autobuild failures due to missing Kconfig
  dependencies"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: qat - add CRYPTO_AES to Kconfig dependencies
  crypto: keembay - Add dependency on HAS_IOMEM
  crypto: keembay - CRYPTO_DEV_KEEMBAY_OCS_AES_SM4 should depend on ARCH_KEEMBAY

3 years agoMerge tag 'objtool-urgent-2020-12-27' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 27 Dec 2020 17:08:23 +0000 (09:08 -0800)]
Merge tag 'objtool-urgent-2020-12-27' of git://git./linux/kernel/git/tip/tip

Pull objtool fix from Ingo Molnar:
 "Fix a segfault that occurs when built with Clang"

* tag 'objtool-urgent-2020-12-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Fix seg fault with Clang non-section symbols

3 years agoMerge tag 'locking-urgent-2020-12-27' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 27 Dec 2020 17:06:10 +0000 (09:06 -0800)]
Merge tag 'locking-urgent-2020-12-27' of git://git./linux/kernel/git/tip/tip

Pull locking fixes from Ingo Molnar:
 "Misc fixes/updates:

   - Fix static keys usage in module __init sections

   - Add separate MAINTAINERS entry for static branches/calls

   - Fix lockdep splat with CONFIG_PREEMPTIRQ_EVENTS=y tracing"

* tag 'locking-urgent-2020-12-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  softirq: Avoid bad tracing / lockdep interaction
  jump_label/static_call: Add MAINTAINERS
  jump_label: Fix usage in module __init

3 years agoMerge tag 'timers-urgent-2020-12-27' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 27 Dec 2020 17:03:41 +0000 (09:03 -0800)]
Merge tag 'timers-urgent-2020-12-27' of git://git./linux/kernel/git/tip/tip

Pull timer fixes from Ingo Molnar:
 "Update/fix two CPU sanity checks in the hotplug and the boot code, and
  fix a typo in the Kconfig help text.

  [ Context: the first two commits are the result of an ongoing
    annotation+review work of (intentional) tick_do_timer_cpu() data
    races reported by KCSAN, but the annotations aren't fully cooked
    yet ]"

* tag 'timers-urgent-2020-12-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timekeeping: Fix spelling mistake in Kconfig "fullfill" -> "fulfill"
  tick/sched: Remove bogus boot "safety" check
  tick: Remove pointless cpu valid check in hotplug code

3 years agoMerge tag 'sched-urgent-2020-12-27' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 27 Dec 2020 17:00:47 +0000 (09:00 -0800)]
Merge tag 'sched-urgent-2020-12-27' of git://git./linux/kernel/git/tip/tip

Pull scheduler fix from Ingo Molnar:
 "Fix a context switch performance regression"

* tag 'sched-urgent-2020-12-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched: Optimize finish_lock_switch()

3 years agomfd: ab8500-debugfs: Remove extraneous seq_putc
Linus Torvalds [Sat, 26 Dec 2020 17:19:49 +0000 (09:19 -0800)]
mfd: ab8500-debugfs: Remove extraneous seq_putc

Commit c9a3c4e637ac ("mfd: ab8500-debugfs: Remove extraneous curly
brace") removed a left-over curly brace that caused build failures, but
Joe Perches points out that the subsequent 'seq_putc()' should also be
removed, because the commit that caused all these problems already added
the final '\n' to the seq_printf() above it.

Reported-by: Joe Perches <joe@perches.com>
Fixes: 886c8121659d ("mfd: ab8500-debugfs: Remove the racy fiddling with irq_desc")
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge tag 'pci-v5.11-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
Linus Torvalds [Sat, 26 Dec 2020 04:17:40 +0000 (20:17 -0800)]
Merge tag 'pci-v5.11-fixes-1' of git://git./linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:

 - Fix a tegra enumeration regression (Rob Herring)

 - Fix a designware-host check that warned on *success*, not failure
   (Alexander Lobakin)

* tag 'pci-v5.11-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: dwc: Fix inverted condition of DMA mask setup warning
  PCI: tegra: Fix host link initialization

3 years agomfd: ab8500-debugfs: Remove extraneous curly brace
Nathan Chancellor [Sat, 26 Dec 2020 01:35:49 +0000 (18:35 -0700)]
mfd: ab8500-debugfs: Remove extraneous curly brace

Clang errors:

  drivers/mfd/ab8500-debugfs.c:1526:2: error: non-void function does not return a value [-Werror,-Wreturn-type]
          }
          ^
  drivers/mfd/ab8500-debugfs.c:1528:2: error: expected identifier or '('
  return 0;
          ^
  drivers/mfd/ab8500-debugfs.c:1529:1: error: extraneous closing brace ('}')
  }
  ^
  3 errors generated.

The cleanup in ab8500_interrupts_show left a curly brace around, remove
it to fix the error.

Fixes: 886c8121659d ("mfd: ab8500-debugfs: Remove the racy fiddling with irq_desc")
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoPCI: dwc: Fix inverted condition of DMA mask setup warning
Alexander Lobakin [Tue, 22 Dec 2020 15:07:43 +0000 (15:07 +0000)]
PCI: dwc: Fix inverted condition of DMA mask setup warning

Commit 660c486590aa ("PCI: dwc: Set 32-bit DMA mask for MSI target address
allocation") added dma_mask_set() call to explicitly set 32-bit DMA mask
for MSI message mapping, but for now it throws a warning on ret == 0, while
dma_set_mask() returns 0 in case of success.

Fix this by inverting the condition.

[bhelgaas: join string to make it greppable]
Fixes: 660c486590aa ("PCI: dwc: Set 32-bit DMA mask for MSI target address allocation")
Link: https://lore.kernel.org/r/20201222150708.67983-1-alobakin@pm.me
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
3 years agoPCI: tegra: Fix host link initialization
Rob Herring [Fri, 18 Dec 2020 14:39:05 +0000 (08:39 -0600)]
PCI: tegra: Fix host link initialization

Commit b9ac0f9dc8ea ("PCI: dwc: Move dw_pcie_setup_rc() to DWC common
code") broke enumeration of downstream devices on Tegra:

In non-working case (next-20201211):

  0001:00:00.0 PCI bridge: NVIDIA Corporation Device 1ad2 (rev a1)
  0001:01:00.0 SATA controller: Marvell Technology Group Ltd. Device 9171 (rev 13)
  0005:00:00.0 PCI bridge: NVIDIA Corporation Device 1ad0 (rev a1)

In working case (v5.10-rc7):

  0001:00:00.0 PCI bridge: Molex Incorporated Device 1ad2 (rev a1)
  0001:01:00.0 SATA controller: Marvell Technology Group Ltd. Device 9171 (rev 13)
  0005:00:00.0 PCI bridge: Molex Incorporated Device 1ad0 (rev a1)
  0005:01:00.0 PCI bridge: PLX Technology, Inc. Device 3380 (rev ab)
  0005:02:02.0 PCI bridge: PLX Technology, Inc. Device 3380 (rev ab)
  0005:03:00.0 USB controller: PLX Technology, Inc. Device 3380 (rev ab)

The problem seems to be dw_pcie_setup_rc() is now called twice before and
after the link up handling. The fix is to move Tegra's link up handling to
.start_link() function like other DWC drivers. Tegra is a bit more
complicated than others as it re-inits the whole DWC controller to retry
the link. With this, the initialization ordering is restored to match the
prior sequence.

Fixes: b9ac0f9dc8ea ("PCI: dwc: Move dw_pcie_setup_rc() to DWC common code")
Link: https://lore.kernel.org/r/20201218143905.1614098-1-robh@kernel.org
Reported-by: Mian Yousaf Kaukab <ykaukab@suse.de>
Tested-by: Mian Yousaf Kaukab <ykaukab@suse.de>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Jonathan Hunter <jonathanh@nvidia.com>
Cc: Vidya Sagar <vidyas@nvidia.com>
3 years agodrm/amd/display: avoid uninitialized variable warning
Linus Torvalds [Fri, 25 Dec 2020 23:41:13 +0000 (15:41 -0800)]
drm/amd/display: avoid uninitialized variable warning

clang (quite rightly) complains fairly loudly about the newly added
mpc1_get_mpc_out_mux() function returning an uninitialized value if the
'opp_id' checks don't pass.

This may not happen in practice, but the code really shouldn't return
garbage if the sanity checks don't pass.

So just initialize 'val' to zero to avoid the issue.

Fixes: 110b055b2827 ("drm/amd/display: add getter routine to retrieve mpcc mux")
Cc: Josip Pavic <Josip.Pavic@amd.com>
Cc: Bindu Ramamurthy <bindu.r@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge tag 'perf-tools-2020-12-24' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 25 Dec 2020 19:07:34 +0000 (11:07 -0800)]
Merge tag 'perf-tools-2020-12-24' of git://git./linux/kernel/git/acme/linux

Pull more perf tools updates from Arnaldo Carvalho de Melo:

 - Refactor 'perf stat' per CPU/socket/die/thread aggregation fixing use
   cases in ARM machines.

 - Fix memory leak when synthesizing SDT probes in 'perf probe'.

 - Update kernel header copies related to KVM, epol_pwait. msr-index and
   powerpc and s390 syscall tables.

* tag 'perf-tools-2020-12-24' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (24 commits)
  perf probe: Fix memory leak when synthesizing SDT probes
  perf stat aggregation: Add separate thread member
  perf stat aggregation: Add separate core member
  perf stat aggregation: Add separate die member
  perf stat aggregation: Add separate socket member
  perf stat aggregation: Add separate node member
  perf stat aggregation: Start using cpu_aggr_id in map
  perf cpumap: Drop in cpu_aggr_map struct
  perf cpumap: Add new map type for aggregation
  perf stat: Replace aggregation ID with a struct
  perf cpumap: Add new struct for cpu aggregation
  perf cpumap: Use existing allocator to avoid using malloc
  perf tests: Improve topology test to check all aggregation types
  perf tools: Update s390's syscall.tbl copy from the kernel sources
  perf tools: Update powerpc's syscall.tbl copy from the kernel sources
  perf s390: Move syscall.tbl check into check-headers.sh
  perf powerpc: Move syscall.tbl check to check-headers.sh
  tools headers UAPI: Synch KVM's svm.h header with the kernel
  tools kvm headers: Update KVM headers from the kernel sources
  tools headers UAPI: Sync KVM's vmx.h header with the kernel sources
  ...

3 years agoMerge branch 'for-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall...
Linus Torvalds [Fri, 25 Dec 2020 19:05:32 +0000 (11:05 -0800)]
Merge branch 'for-5.11' of git://git./linux/kernel/git/jlawall/linux

Pull coccinelle updates from Julia Lawall.

* 'for-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux:
  scripts: coccicheck: Correct usage of make coccicheck
  coccinelle: update expiring email addresses
  coccinnelle: Remove ptr_ret script
  kbuild: do not use scripts/ld-version.sh for checking spatch version
  remove boolinit.cocci

3 years agogenirq: Fix export of irq_to_desc() for powerpc KVM
Michael Ellerman [Fri, 25 Dec 2020 11:30:58 +0000 (22:30 +1100)]
genirq: Fix export of irq_to_desc() for powerpc KVM

Commit 64a1b95bb9fe ("genirq: Restrict export of irq_to_desc()") removed
the export of irq_to_desc() unless powerpc KVM is being built, because
there is still a use of irq_to_desc() in modular code there.

However it used:

  #ifdef CONFIG_KVM_BOOK3S_64_HV

Which doesn't work when that symbol is =m, leading to a build failure:

  ERROR: modpost: "irq_to_desc" [arch/powerpc/kvm/kvm-hv.ko] undefined!

Fix it by checking for the definedness of the correct symbol which is
CONFIG_KVM_BOOK3S_64_HV_MODULE.

Fixes: 64a1b95bb9fe ("genirq: Restrict export of irq_to_desc()")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Fri, 25 Dec 2020 18:54:29 +0000 (10:54 -0800)]
Merge branch 'work.misc' of git://git./linux/kernel/git/viro/vfs

Pull misc vfs updates from Al Viro:
 "Assorted patches from previous cycle(s)..."

* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  fix hostfs_open() use of ->f_path.dentry
  Make sure that make_create_in_sticky() never sees uninitialized value of dir_mode
  fs: Kill DCACHE_DONTCACHE dentry even if DCACHE_REFERENCED is set
  fs: Handle I_DONTCACHE in iput_final() instead of generic_drop_inode()
  fs/namespace.c: WARN if mnt_count has become negative

3 years agoMerge tag 'docs-5.11-2' of git://git.lwn.net/linux
Linus Torvalds [Thu, 24 Dec 2020 22:20:33 +0000 (14:20 -0800)]
Merge tag 'docs-5.11-2' of git://git.lwn.net/linux

Pull documentation fixes from Jonathan Corbet:
 "A small set of late-arriving, small documentation fixes"

* tag 'docs-5.11-2' of git://git.lwn.net/linux:
  docs: admin-guide: Fix default value of max_map_count in sysctl/vm.rst
  Documentation/submitting-patches: Document the SoB chain
  Documentation: process: Correct numbering
  docs: submitting-patches: Trivial - fix grammatical error

3 years agoMerge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso...
Linus Torvalds [Thu, 24 Dec 2020 22:16:02 +0000 (14:16 -0800)]
Merge tag 'ext4_for_linus' of git://git./linux/kernel/git/tytso/ext4

Pull ext4 updates from Ted Ts'o:
 "Various bug fixes and cleanups for ext4; no new features this cycle"

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (29 commits)
  ext4: remove unnecessary wbc parameter from ext4_bio_write_page
  ext4: avoid s_mb_prefetch to be zero in individual scenarios
  ext4: defer saving error info from atomic context
  ext4: simplify ext4 error translation
  ext4: move functions in super.c
  ext4: make ext4_abort() use __ext4_error()
  ext4: standardize error message in ext4_protect_reserved_inode()
  ext4: remove redundant sb checksum recomputation
  ext4: don't remount read-only with errors=continue on reboot
  ext4: fix deadlock with fs freezing and EA inodes
  jbd2: add a helper to find out number of fast commit blocks
  ext4: make fast_commit.h byte identical with e2fsprogs/fast_commit.h
  ext4: fix fall-through warnings for Clang
  ext4: add docs about fast commit idempotence
  ext4: remove the unused EXT4_CURRENT_REV macro
  ext4: fix an IS_ERR() vs NULL check
  ext4: check for invalid block size early when mounting a file system
  ext4: fix a memory leak of ext4_free_data
  ext4: delete nonsensical (commented-out) code inside ext4_xattr_block_set()
  ext4: update ext4_data_block_valid related comments
  ...

3 years agoMerge tag 'Smack-for-5.11-io_uring-fix' of git://github.com/cschaufler/smack-next
Linus Torvalds [Thu, 24 Dec 2020 22:08:43 +0000 (14:08 -0800)]
Merge tag 'Smack-for-5.11-io_uring-fix' of git://github.com/cschaufler/smack-next

Pull smack fix from Casey Schaufler:
 "Provide a fix for the incorrect handling of privilege in the face of
  io_uring's use of kernel threads. That invalidated an long standing
  assumption regarding the privilege of kernel threads.

  The fix is simple and safe. It was provided by Jens Axboe and has been
  tested"

* tag 'Smack-for-5.11-io_uring-fix' of git://github.com/cschaufler/smack-next:
  Smack: Handle io_uring kernel thread privileges

3 years agoMerge tag 'riscv-for-linus-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 24 Dec 2020 22:05:05 +0000 (14:05 -0800)]
Merge tag 'riscv-for-linus-5.11-rc1' of git://git./linux/kernel/git/riscv/linux

Pull RISC-V fix from Palmer Dabbelt
 "Avoid trying to initialize memory regions outside the usable range"

* tag 'riscv-for-linus-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  RISC-V: Fix usage of memblock_enforce_memory_limit

3 years agoMerge tag 'powerpc-5.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Thu, 24 Dec 2020 22:02:00 +0000 (14:02 -0800)]
Merge tag 'powerpc-5.11-2' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - Four commits fixing various things in the new C VDSO code

 - One fix for a 32-bit VMAP stack bug

 - Two minor build fixes

Thanks to Cédric Le Goater, Christophe Leroy, and Will Springer.

* tag 'powerpc-5.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/32: Fix vmap stack - Properly set r1 before activating MMU on syscall too
  powerpc/vdso: Fix DOTSYM for 32-bit LE VDSO
  powerpc/vdso: Don't pass 64-bit ABI cflags to 32-bit VDSO
  powerpc/vdso: Block R_PPC_REL24 relocations
  powerpc/smp: Add __init to init_big_cores()
  powerpc/time: Force inlining of get_tb()
  powerpc/boot: Fix build of dts/fsl

3 years agoMerge tag 'irq-core-2020-12-23' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 24 Dec 2020 21:50:23 +0000 (13:50 -0800)]
Merge tag 'irq-core-2020-12-23' of git://git./linux/kernel/git/tip/tip

Pull irq updates from Thomas Gleixner:
 "This is the second attempt after the first one failed miserably and
  got zapped to unblock the rest of the interrupt related patches.

  A treewide cleanup of interrupt descriptor (ab)use with all sorts of
  racy accesses, inefficient and disfunctional code. The goal is to
  remove the export of irq_to_desc() to prevent these things from
  creeping up again"

* tag 'irq-core-2020-12-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (30 commits)
  genirq: Restrict export of irq_to_desc()
  xen/events: Implement irq distribution
  xen/events: Reduce irq_info:: Spurious_cnt storage size
  xen/events: Only force affinity mask for percpu interrupts
  xen/events: Use immediate affinity setting
  xen/events: Remove disfunct affinity spreading
  xen/events: Remove unused bind_evtchn_to_irq_lateeoi()
  net/mlx5: Use effective interrupt affinity
  net/mlx5: Replace irq_to_desc() abuse
  net/mlx4: Use effective interrupt affinity
  net/mlx4: Replace irq_to_desc() abuse
  PCI: mobiveil: Use irq_data_get_irq_chip_data()
  PCI: xilinx-nwl: Use irq_data_get_irq_chip_data()
  NTB/msi: Use irq_has_action()
  mfd: ab8500-debugfs: Remove the racy fiddling with irq_desc
  pinctrl: nomadik: Use irq_has_action()
  drm/i915/pmu: Replace open coded kstat_irqs() copy
  drm/i915/lpe_audio: Remove pointless irq_to_desc() usage
  s390/irq: Use irq_desc_kstat_cpu() in show_msi_interrupt()
  parisc/irq: Use irq_desc_kstat_cpu() in show_interrupts()
  ...

3 years agoMerge tag 'efi_updates_for_v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 24 Dec 2020 20:40:07 +0000 (12:40 -0800)]
Merge tag 'efi_updates_for_v5.11' of git://git./linux/kernel/git/tip/tip

Pull EFI updates from Borislav Petkov:
 "These got delayed due to a last minute ia64 build issue which got
  fixed in the meantime.

  EFI updates collected by Ard Biesheuvel:

   - Don't move BSS section around pointlessly in the x86 decompressor

   - Refactor helper for discovering the EFI secure boot mode

   - Wire up EFI secure boot to IMA for arm64

   - Some fixes for the capsule loader

   - Expose the RT_PROP table via the EFI test module

   - Relax DT and kernel placement restrictions on ARM

  with a few followup fixes:

   - fix the build breakage on IA64 caused by recent capsule loader
     changes

   - suppress a type mismatch build warning in the expansion of
     EFI_PHYS_ALIGN on ARM"

* tag 'efi_updates_for_v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  efi: arm: force use of unsigned type for EFI_PHYS_ALIGN
  efi: ia64: disable the capsule loader
  efi: stub: get rid of efi_get_max_fdt_addr()
  efi/efi_test: read RuntimeServicesSupported
  efi: arm: reduce minimum alignment of uncompressed kernel
  efi: capsule: clean scatter-gather entries from the D-cache
  efi: capsule: use atomic kmap for transient sglist mappings
  efi: x86/xen: switch to efi_get_secureboot_mode helper
  arm64/ima: add ima_arch support
  ima: generalize x86/EFI arch glue for other EFI architectures
  efi: generalize efi_get_secureboot
  efi/libstub: EFI_GENERIC_STUB_INITRD_CMDLINE_LOADER should not default to yes
  efi/x86: Only copy the compressed kernel image in efi_relocate_kernel()
  efi/libstub/x86: simplify efi_is_native()

3 years agoMerge tag 'io_uring-5.11-2020-12-23' of git://git.kernel.dk/linux-block
Linus Torvalds [Thu, 24 Dec 2020 20:35:00 +0000 (12:35 -0800)]
Merge tag 'io_uring-5.11-2020-12-23' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "All straight fixes, or a prep patch for a fix, either bound for stable
  or fixing issues from this merge window. In particular:

   - Fix new shutdown op not breaking links on failure

   - Hold mm->mmap_sem for mm->locked_vm manipulation

   - Various cancelation fixes (me, Pavel)

   - Fix error path potential double ctx free (Pavel)

   - IOPOLL fixes (Xiaoguang)"

* tag 'io_uring-5.11-2020-12-23' of git://git.kernel.dk/linux-block:
  io_uring: hold uring_lock while completing failed polled io in io_wq_submit_work()
  io_uring: fix double io_uring free
  io_uring: fix ignoring xa_store errors
  io_uring: end waiting before task cancel attempts
  io_uring: always progress task_work on task cancel
  io-wq: kill now unused io_wq_cancel_all()
  io_uring: make ctx cancel on exit targeted to actual ctx
  io_uring: fix 0-iov read buffer select
  io_uring: close a small race gap for files cancel
  io_uring: fix io_wqe->work_list corruption
  io_uring: limit {io|sq}poll submit locking scope
  io_uring: inline io_cqring_mark_overflow()
  io_uring: consolidate CQ nr events calculation
  io_uring: remove racy overflow list fast checks
  io_uring: cancel reqs shouldn't kill overflow list
  io_uring: hold mmap_sem for mm->locked_vm manipulation
  io_uring: break links on shutdown failure

3 years agoMerge tag 'block-5.11-2020-12-23' of git://git.kernel.dk/linux-block
Linus Torvalds [Thu, 24 Dec 2020 20:28:35 +0000 (12:28 -0800)]
Merge tag 'block-5.11-2020-12-23' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "A few stragglers in here, but mostly just straight fixes. In
  particular:

   - Set of rnbd fixes for issues around changes for the merge window
     (Gioh, Jack, Md Haris Iqbal)

   - iocost tracepoint addition (Baolin)

   - Copyright/maintainers update (Christoph)

   - Remove old blk-mq fast path CPU warning (Daniel)

   - loop max_part fix (Josh)

   - Remote IPI threaded IRQ fix (Sebastian)

   - dasd stable fixes (Stefan)

   - bcache merge window fixup and style fixup (Yi, Zheng)"

* tag 'block-5.11-2020-12-23' of git://git.kernel.dk/linux-block:
  md/bcache: convert comma to semicolon
  bcache:remove a superfluous check in register_bcache
  block: update some copyrights
  block: remove a pointless self-reference in block_dev.c
  MAINTAINERS: add fs/block_dev.c to the block section
  blk-mq: Don't complete on a remote CPU in force threaded mode
  s390/dasd: fix list corruption of lcu list
  s390/dasd: fix list corruption of pavgroup group list
  s390/dasd: prevent inconsistent LCU device data
  s390/dasd: fix hanging device offline processing
  blk-iocost: Add iocg idle state tracepoint
  nbd: Respect max_part for all partition scans
  block/rnbd-clt: Does not request pdu to rtrs-clt
  block/rnbd-clt: Dynamically allocate sglist for rnbd_iu
  block/rnbd: Set write-back cache and fua same to the target device
  block/rnbd: Fix typos
  block/rnbd-srv: Protect dev session sysfs removal
  block/rnbd-clt: Fix possible memleak
  block/rnbd-clt: Get rid of warning regarding size argument in strlcpy
  blk-mq: Remove 'running from the wrong CPU' warning

3 years agoMerge tag 'libnvdimm-for-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdim...
Linus Torvalds [Thu, 24 Dec 2020 20:18:11 +0000 (12:18 -0800)]
Merge tag 'libnvdimm-for-5.11' of git://git./linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dan Williams:
 "Twas the day before Christmas and the only thing stirring in libnvdimm
  / device-dax land is a pile of miscellaneous fixups and cleanups.

  The bulk of it has appeared in -next save the last two patches to
  device-dax that have passed my build and unit tests.

   - Fix a long standing block-window-namespace issue surfaced by the
     ndctl change to attempt to preserve the kernel device name over
     a 'reconfigure'

   - Fix a few error path memory leaks in nfit and device-dax

   - Silence a smatch warning in the ioctl path

   - Miscellaneous cleanups"

* tag 'libnvdimm-for-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  device-dax: Avoid an unnecessary check in alloc_dev_dax_range()
  device-dax: Fix range release
  device-dax: delete a redundancy check in dev_dax_validate_align()
  libnvdimm/label: Return -ENXIO for no slot in __blk_label_update
  device-dax/core: Fix memory leak when rmmod dax.ko
  device-dax/pmem: Convert comma to semicolon
  libnvdimm: Cleanup include of badblocks.h
  ACPI: NFIT: Fix input validation of bus-family
  libnvdimm/namespace: Fix reaping of invalidated block-window-namespace labels
  ACPI/nfit: avoid accessing uninitialized memory in acpi_nfit_ctl()

3 years agoMerge tag 'drm-next-2020-12-24' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Thu, 24 Dec 2020 20:14:29 +0000 (12:14 -0800)]
Merge tag 'drm-next-2020-12-24' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Xmas eve pull request present.

  Just some fixes that trickled in this past week: Mostly amdgpu fixes,
  with a dma-buf/mips build fix and some misc komeda fixes.

  dma-buf:
   - fix build on mips

  komeda:
   - fix commit tail operation order
   - NULL pointer fix
   - out of bounds access fix

  ttm:
   - remove an unused function

  amdgpu:
   - Vangogh SMU fixes
   - Arcturus gfx9 fixes
   - Misc display fixes
   - Sienna Cichlid SMU update
   - Fix S3 display memory leak
   - Fix regression caused by DP sub-connector support

  amdkfd:
   - Properly require pcie atomics for gfx10"

* tag 'drm-next-2020-12-24' of git://anongit.freedesktop.org/drm/drm: (31 commits)
  drm/amd/display: Fix memory leaks in S3 resume
  drm/amdgpu: Fix a copy-pasta comment
  drm/amdgpu: only set DP subconnector type on DP and eDP connectors
  drm/amd/pm: bump Sienna Cichlid smu_driver_if version to match latest pmfw
  drm/amd/display: add getter routine to retrieve mpcc mux
  drm/amd/display: always program DPPDTO unless not safe to lower
  drm/amd/display: [FW Promotion] Release 0.0.47
  drm/amd/display: updated wm table for Renoir
  drm/amd/display: Acquire DSC during split stream for ODM only if top_pipe
  drm/amd/display: Multi-display underflow observed
  drm/amd/display: Remove unnecessary NULL check
  drm/amd/display: Update RN/VGH active display count workaround
  drm/amd/display: change SMU repsonse timeout to 2s.
  drm/amd/display: gradually ramp ABM intensity
  drm/amd/display: To modify the condition in indicating branch device
  drm/amd/display: Modify the hdcp device count check condition
  drm/amd/display: Interfaces for hubp blank and soft reset
  drm/amd/display: handler not correctly checked at remove_irq_handler
  drm/amdgpu: check gfx pipe availability before toggling its interrupts
  drm/amdgpu: remove unnecessary asic type check
  ...

3 years agoMerge tag 'devicetree-fixes-for-5.11-1' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 24 Dec 2020 20:09:48 +0000 (12:09 -0800)]
Merge tag 'devicetree-fixes-for-5.11-1' of git://git./linux/kernel/git/robh/linux

Pull devicetree fixes from Rob Herring:

 - Correct the JSON pointer syntax in binding schemas

 - Drop unnecessary *-supply schema constraints

 - Drop redundant maxItems/items on array schemas

 - Fix various yamllint warnings

 - Fix various missing 'additionalProperties' properties

* tag 'devicetree-fixes-for-5.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  dt-bindings: Drop redundant maxItems/items
  dt-bindings: net: qcom,ipa: Drop unnecessary type ref on 'memory-region'
  dt-bindings: Drop unnecessary *-supply schemas properties
  dt-bindings/display: abt,y030xx067a: Fix binding
  dt-bindings: clock: imx8qxp-lpcg: eliminate yamllint warnings
  dt-bindings: display: eliminate yamllint warnings
  dt-bindings: media: nokia,smia: eliminate yamllint warnings
  dt-bindings: devapc: add the required property 'additionalProperties'
  dt-bindings: soc: add the required property 'additionalProperties'
  dt-bindings: serial: add the required property 'additionalProperties'
  dt-bindings: xlnx,vcu-settings: fix dt_binding_check warnings
  media: dt-bindings: coda: Add missing 'additionalProperties'
  dt-bindings: Fix JSON pointers

3 years agoMerge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Linus Torvalds [Thu, 24 Dec 2020 20:06:46 +0000 (12:06 -0800)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:

 - vdpa sim refactoring

 - virtio mem: Big Block Mode support

 - misc cleanus, fixes

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (61 commits)
  vdpa: Use simpler version of ida allocation
  vdpa: Add missing comment for virtqueue count
  uapi: virtio_ids: add missing device type IDs from OASIS spec
  uapi: virtio_ids.h: consistent indentions
  vhost scsi: fix error return code in vhost_scsi_set_endpoint()
  virtio_ring: Fix two use after free bugs
  virtio_net: Fix error code in probe()
  virtio_ring: Cut and paste bugs in vring_create_virtqueue_packed()
  tools/virtio: add barrier for aarch64
  tools/virtio: add krealloc_array
  tools/virtio: include asm/bug.h
  vdpa/mlx5: Use write memory barrier after updating CQ index
  vdpa: split vdpasim to core and net modules
  vdpa_sim: split vdpasim_virtqueue's iov field in out_iov and in_iov
  vdpa_sim: make vdpasim->buffer size configurable
  vdpa_sim: use kvmalloc to allocate vdpasim->buffer
  vdpa_sim: set vringh notify callback
  vdpa_sim: add set_config callback in vdpasim_dev_attr
  vdpa_sim: add get_config callback in vdpasim_dev_attr
  vdpa_sim: make 'config' generic and usable for any device type
  ...

3 years agoMerge branch 'for-5.11/dax' into for-5.11/libnvdimm
Dan Williams [Thu, 24 Dec 2020 18:14:04 +0000 (10:14 -0800)]
Merge branch 'for-5.11/dax' into for-5.11/libnvdimm

Pull in miscellaneous device-dax fixups and cleanups for v5.11.

3 years agodevice-dax: Avoid an unnecessary check in alloc_dev_dax_range()
Zhen Lei [Sat, 19 Dec 2020 08:18:40 +0000 (16:18 +0800)]
device-dax: Avoid an unnecessary check in alloc_dev_dax_range()

Swap the calling sequence of krealloc() and __request_region(), call the
latter first. In this way, the value of dev_dax->nr_range does not need to
be considered when __request_region() failed.

Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20201219081840.1149-2-thunder.leizhen@huawei.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
3 years agodevice-dax: Fix range release
Dan Williams [Sat, 19 Dec 2020 02:41:41 +0000 (18:41 -0800)]
device-dax: Fix range release

There are multiple locations that open-code the release of the last
range in a device-dax instance. Consolidate this into a new
dev_dax_trim_range() helper.

This also addresses a kmemleak report:

# cat /sys/kernel/debug/kmemleak
[..]
unreferenced object 0xffff976bd46f6240 (size 64):
   comm "ndctl", pid 23556, jiffies 4299514316 (age 5406.733s)
   hex dump (first 32 bytes):
     00 00 00 00 00 00 00 00 00 00 20 c3 37 00 00 00  .......... .7...
     ff ff ff 7f 38 00 00 00 00 00 00 00 00 00 00 00  ....8...........
   backtrace:
     [<00000000064003cf>] __kmalloc_track_caller+0x136/0x379
     [<00000000d85e3c52>] krealloc+0x67/0x92
     [<00000000d7d3ba8a>] __alloc_dev_dax_range+0x73/0x25c
     [<0000000027d58626>] devm_create_dev_dax+0x27d/0x416
     [<00000000434abd43>] __dax_pmem_probe+0x1c9/0x1000 [dax_pmem_core]
     [<0000000083726c1c>] dax_pmem_probe+0x10/0x1f [dax_pmem]
     [<00000000b5f2319c>] nvdimm_bus_probe+0x9d/0x340 [libnvdimm]
     [<00000000c055e544>] really_probe+0x230/0x48d
     [<000000006cabd38e>] driver_probe_device+0x122/0x13b
     [<0000000029c7b95a>] device_driver_attach+0x5b/0x60
     [<0000000053e5659b>] bind_store+0xb7/0xc3
     [<00000000d3bdaadc>] drv_attr_store+0x27/0x31
     [<00000000949069c5>] sysfs_kf_write+0x4a/0x57
     [<000000004a8b5adf>] kernfs_fop_write+0x150/0x1e5
     [<00000000bded60f0>] __vfs_write+0x1b/0x34
     [<00000000b92900f0>] vfs_write+0xd8/0x1d1

Reported-by: Jane Chu <jane.chu@oracle.com>
Cc: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/160834570161.1791850.14911670304441510419.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
3 years agoperf probe: Fix memory leak when synthesizing SDT probes
Arnaldo Carvalho de Melo [Thu, 24 Dec 2020 13:52:10 +0000 (10:52 -0300)]
perf probe: Fix memory leak when synthesizing SDT probes

The argv_split() function must be paired with argv_free(), else we must
keep a reference to the argv array received or do the freeing ourselves,
in synthesize_sdt_probe_command() we were simply leaking that argv[]
array.

Fixes: 3b1f8311f6963cd1 ("perf probe: Add sdt probes arguments into the uprobe cmd string")
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexandre Truong <alexandre.truong@arm.com>
Cc: Alexis Berlemont <alexis.berlemont@gmail.com>
Cc: He Zhe <zhe.he@windriver.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20201224135139.GF477817@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf stat aggregation: Add separate thread member
James Clark [Thu, 26 Nov 2020 14:13:28 +0000 (16:13 +0200)]
perf stat aggregation: Add separate thread member

A separate field isn't strictly required. The core field could be
re-used for thread IDs as a single field was used previously.

But separating them will avoid confusion and catch potential errors
where core IDs are read as thread IDs and vice versa.

Also remove the placeholder id field which is now no longer used.

Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20201126141328.6509-13-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf stat aggregation: Add separate core member
James Clark [Thu, 26 Nov 2020 14:13:27 +0000 (16:13 +0200)]
perf stat aggregation: Add separate core member

Add core as a separate member so that it doesn't have to be packed into
the int value.

Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20201126141328.6509-12-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf stat aggregation: Add separate die member
James Clark [Thu, 26 Nov 2020 14:13:26 +0000 (16:13 +0200)]
perf stat aggregation: Add separate die member

Add die as a separate member so that it doesn't have to be packed into
the int value.

Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20201126141328.6509-11-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf stat aggregation: Add separate socket member
James Clark [Thu, 26 Nov 2020 14:13:25 +0000 (16:13 +0200)]
perf stat aggregation: Add separate socket member

Add socket as a separate member so that it doesn't have to be packed
into the int value.

When the socket ID was larger than 8 bits the output appeared corrupted
or incomplete.

For example, here on ThunderX2 'perf stat' reports a socket of -1 and an
invalid die number:

  ./perf stat -a --per-die
  The socket id number is too big.

  Performance counter stats for 'system wide':

  S-1-D255       128             687.99 msec cpu-clock                 #   57.240 CPUs utilized
  ...
  S36-D0         128             842.34 msec cpu-clock                 #   70.081 CPUs utilized
  ...

And with --per-core there is an entry with an invalid core ID:

  ./perf stat record -a --per-core
  The socket id number is too big.

  Performance counter stats for 'system wide':
  S-1-D255-C65535     128             671.04 msec cpu-clock                 #   54.112 CPUs utilized
  ...
  S36-D0-C0           4              28.27 msec cpu-clock                 #    2.279 CPUs utilized
  ...

This fixes the "Session topology" self test on ThunderX2.

After this fix the output contains the correct socket and die IDs and no
longer prints a warning about the size of the socket ID:

  ./perf stat --per-die -a

  Performance counter stats for 'system wide':

  S36-D0         128         169,869.39 msec cpu-clock                 #  127.501 CPUs utilized
  ...
  S3612-D0         128         169,733.05 msec cpu-clock                 #  127.398 CPUs utilized

Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20201126141328.6509-10-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf stat aggregation: Add separate node member
James Clark [Thu, 26 Nov 2020 14:13:24 +0000 (16:13 +0200)]
perf stat aggregation: Add separate node member

Add node as a separate member so that it doesn't have to be packed into
the int value.

Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20201126141328.6509-9-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf stat aggregation: Start using cpu_aggr_id in map
James Clark [Thu, 26 Nov 2020 14:13:23 +0000 (16:13 +0200)]
perf stat aggregation: Start using cpu_aggr_id in map

Use the new cpu_aggr_id struct in the cpu map instead of int so that it
can store more data.

No functional changes.

Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: John Garry <john.garry@huawei.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20201126141328.6509-8-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf cpumap: Drop in cpu_aggr_map struct
James Clark [Thu, 26 Nov 2020 14:13:22 +0000 (16:13 +0200)]
perf cpumap: Drop in cpu_aggr_map struct

Replace usages of perf_cpu_map with cpu_aggr map in places that are
involved with 'perf stat' aggregation.

This will then later be changed to be a map of cpu_aggr_id rather than
an int so that more data can be stored.

No functional changes.

Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: John Garry <john.garry@huawei.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20201126141328.6509-7-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf cpumap: Add new map type for aggregation
James Clark [Thu, 26 Nov 2020 14:13:21 +0000 (16:13 +0200)]
perf cpumap: Add new map type for aggregation

Currently this is a duplicate of perf_cpu_map so that it can be used as
a drop in replacement.

In a later commit it will be changed from a map of ints to use the new
cpu_aggr_id struct.

No functional changes.

Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20201126141328.6509-6-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf stat: Replace aggregation ID with a struct
James Clark [Thu, 26 Nov 2020 14:13:20 +0000 (16:13 +0200)]
perf stat: Replace aggregation ID with a struct

Replace all occurences of the usage of int with the new struct
cpu_aggr_id.

No functional changes.

Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20201126141328.6509-5-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf cpumap: Add new struct for cpu aggregation
James Clark [Thu, 26 Nov 2020 14:13:19 +0000 (16:13 +0200)]
perf cpumap: Add new struct for cpu aggregation

This struct currently has only a single int member so that it can be
used as a drop in replacement for the existing behaviour.

Comparison and constructor functions have also been added that will
replace usages of '==' and '= -1'.

No functional changes.

Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20201126141328.6509-4-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf cpumap: Use existing allocator to avoid using malloc
James Clark [Thu, 26 Nov 2020 14:13:18 +0000 (16:13 +0200)]
perf cpumap: Use existing allocator to avoid using malloc

Use the existing allocator for perf_cpu_map to avoid use of raw malloc.
This could cause an issue in later commits where the size of
perf_cpu_map is changed.

No functional changes.

Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20201126141328.6509-3-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf tests: Improve topology test to check all aggregation types
James Clark [Thu, 26 Nov 2020 14:13:17 +0000 (16:13 +0200)]
perf tests: Improve topology test to check all aggregation types

Improve the topology test to check all aggregation types. This is to
lock down the behaviour before 'id' is changed into a struct in later
commits.

Committer testing:

  $ perf test topology
  41: Session topology: Ok
  $

  $ perf test -v topology
  41: Session topology:
  --- start ---
  test child forked, pid 965552
  templ file: /tmp/perf-test-mO7NtI
  Problems creating module maps, continuing anyway...
  CPU 0, core 0, socket 0
  CPU 1, core 1, socket 0
  CPU 2, core 2, socket 0
  CPU 3, core 4, socket 0
  CPU 4, core 5, socket 0
  CPU 5, core 6, socket 0
  CPU 6, core 8, socket 0
  CPU 7, core 9, socket 0
  CPU 8, core 10, socket 0
  CPU 9, core 12, socket 0
  CPU 10, core 13, socket 0
  CPU 11, core 14, socket 0
  CPU 12, core 0, socket 0
  CPU 13, core 1, socket 0
  CPU 14, core 2, socket 0
  CPU 15, core 4, socket 0
  CPU 16, core 5, socket 0
  CPU 17, core 6, socket 0
  CPU 18, core 8, socket 0
  CPU 19, core 9, socket 0
  CPU 20, core 10, socket 0
  CPU 21, core 12, socket 0
  CPU 22, core 13, socket 0
  CPU 23, core 14, socket 0
  test child finished with 0
  ---- end ----
  Session topology: Ok
  $

Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: https://lore.kernel.org/r/20201126141328.6509-2-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf tools: Update s390's syscall.tbl copy from the kernel sources
Tiezhu Yang [Wed, 23 Dec 2020 16:24:35 +0000 (13:24 -0300)]
perf tools: Update s390's syscall.tbl copy from the kernel sources

This silences the following tools/perf/ build warning:

  Warning: Kernel ABI header at 'tools/perf/arch/s390/entry/syscalls/syscall.tbl' differs from latest version at 'arch/s390/kernel/syscalls/syscall.tbl'

Just make them same:

  cp arch/s390/kernel/syscalls/syscall.tbl tools/perf/arch/s390/entry/syscalls/syscall.tbl

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Reviewed-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Xuefeng Li <lixuefeng@loongson.cn>
Link: http://lore.kernel.org/lkml/1608278364-6733-5-git-send-email-yangtiezhu@loongson.cn
[ There were updates after Tiezhu's post, so I just updated the copy ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>