openwrt/staging/blogic.git
6 years agoscsi: scsi_debug: add cdb_len parameter
Douglas Gilbert [Tue, 5 Dec 2017 05:05:49 +0000 (00:05 -0500)]
scsi: scsi_debug: add cdb_len parameter

While testing "sd: Micro-optimize READ / WRITE CDB encoding" patches it
was helpful to check various code paths associated with READ/WRITE 6, 10
and 16 byte cdb variants. There seems to be no user space "knobs" to
twiddle use_10_for_rw and friends in the scsi_device structure.  So add
a parameter to scsi_debug called "cdb_len" for this purpose.

[mkp: fixed typo]

Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: core: Introduce scsi_devinfo_key enumeration type
Bart Van Assche [Mon, 4 Dec 2017 18:36:33 +0000 (10:36 -0800)]
scsi: core: Introduce scsi_devinfo_key enumeration type

Since symbolic names for the device information keys alread exist,
associate an enumeration type with these symbolic values. This change
makes it clear what the valid values for the 'key' arguments are.

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: core: scsi_get_device_flags_keyed(): Always return device flags
Bart Van Assche [Mon, 4 Dec 2017 18:36:31 +0000 (10:36 -0800)]
scsi: core: scsi_get_device_flags_keyed(): Always return device flags

Since scsi_get_device_flags_keyed() callers do not check whether or not
the returned value is an error code, change that function such that it
returns a flags value even if the 'key' argument is invalid.  Note:
since commit 28a0bc4120d3 ("scsi: sd: Implement blacklist option for
WRITE SAME w/ UNMAP") bit 31 is a valid device information flag so
checking whether bit 31 is set in the return value is not sufficient to
tell the difference between an error code and a flags value.

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: core: Convert a source code comment into a runtime check
Bart Van Assche [Mon, 4 Dec 2017 18:06:24 +0000 (10:06 -0800)]
scsi: core: Convert a source code comment into a runtime check

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: core: Ensure that the SCSI error handler gets woken up
Bart Van Assche [Mon, 4 Dec 2017 18:06:23 +0000 (10:06 -0800)]
scsi: core: Ensure that the SCSI error handler gets woken up

If scsi_eh_scmd_add() is called concurrently with
scsi_host_queue_ready() while shost->host_blocked > 0 then it can
happen that neither function wakes up the SCSI error handler. Fix
this by making every function that decreases the host_busy counter
wake up the error handler if necessary and by protecting the
host_failed checks with the SCSI host lock.

Reported-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
References: https://marc.info/?l=linux-kernel&m=150461610630736
Fixes: commit 746650160866 ("scsi: convert host_busy to atomic_t")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
Tested-by: Stuart Hayes <stuart.w.hayes@gmail.com>
Cc: Konstantin Khorenko <khorenko@virtuozzo.com>
Cc: Stuart Hayes <stuart.w.hayes@gmail.com>
Cc: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agorcu: Export init_rcu_head() and destroy_rcu_head() to GPL modules
Paul E. McKenney [Thu, 7 Dec 2017 17:40:38 +0000 (09:40 -0800)]
rcu: Export init_rcu_head() and destroy_rcu_head() to GPL modules

Use of init_rcu_head() and destroy_rcu_head() from modules results in
the following build-time error with CONFIG_DEBUG_OBJECTS_RCU_HEAD=y:

ERROR: "init_rcu_head" [drivers/scsi/scsi_mod.ko] undefined!
ERROR: "destroy_rcu_head" [drivers/scsi/scsi_mod.ko] undefined!

This commit therefore adds EXPORT_SYMBOL_GPL() for each to allow them to
be used by GPL-licensed kernel modules.

Reported-by: Bart Van Assche <Bart.VanAssche@wdc.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: arcmsr: Fix command result for CHECK_CONDITION
Ching Huang [Tue, 5 Dec 2017 03:28:37 +0000 (11:28 +0800)]
scsi: arcmsr: Fix command result for CHECK_CONDITION

Fix report command result error when CHECK_CONDITION.

Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: arcmsr: Update driver version to v1.40.00.04-20171130
Ching Huang [Tue, 5 Dec 2017 02:29:44 +0000 (10:29 +0800)]
scsi: arcmsr: Update driver version to v1.40.00.04-20171130

Update driver version to v1.40.00.04-20171130

Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: arcmsr: Add driver module parameter msix_enable
Ching Huang [Tue, 5 Dec 2017 02:26:38 +0000 (10:26 +0800)]
scsi: arcmsr: Add driver module parameter msix_enable

Add module parameter msix_enable so user has the option of disabling
MSI-X interrupts if there is a platform problem.

Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: arcmsr: Add driver module parameter msi_enable
Ching Huang [Tue, 5 Dec 2017 02:24:01 +0000 (10:24 +0800)]
scsi: arcmsr: Add driver module parameter msi_enable

Add module parameter msi_enable so user has the option of disabling MSI
interrupts if there is a platform problem.

Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: arcmsr: Fix grammar
Ching Huang [Tue, 5 Dec 2017 02:18:47 +0000 (10:18 +0800)]
scsi: arcmsr: Fix grammar

Fix grammar.

Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: arcmsr: Adjust whitespace
Ching Huang [Tue, 5 Dec 2017 02:16:13 +0000 (10:16 +0800)]
scsi: arcmsr: Adjust whitespace

Adjust tabs and whitespace.

Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: arcmsr: Spin off duplicate code
Ching Huang [Tue, 5 Dec 2017 02:11:23 +0000 (10:11 +0800)]
scsi: arcmsr: Spin off duplicate code

Spin off duplicate code of timer init for message isr BH in arcmsr_probe
and arcmsr_resume as a function arcmsr_init_get_devmap_timer.

Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: arcmsr: Fix clear doorbell queue on ACB_ADAPTER_TYPE_B
Ching Huang [Tue, 5 Dec 2017 02:02:16 +0000 (10:02 +0800)]
scsi: arcmsr: Fix clear doorbell queue on ACB_ADAPTER_TYPE_B

Fix clear doorbell queue on ACB_ADAPTER_TYPE_B controller.

Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: arcmsr: Add a function to set date and time to firmware
Ching Huang [Tue, 5 Dec 2017 01:59:52 +0000 (09:59 +0800)]
scsi: arcmsr: Add a function to set date and time to firmware

Add a function arcmsr_set_iop_datetime and driver option set_date_time
to set date and time to firmware.

Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: arcmsr: Add ACB_F_MSG_GET_CONFIG to acb->acb_flags
Ching Huang [Tue, 5 Dec 2017 01:57:23 +0000 (09:57 +0800)]
scsi: arcmsr: Add ACB_F_MSG_GET_CONFIG to acb->acb_flags

Add ACB_F_MSG_GET_CONFIG to acb->acb_flags for for message interrupt
checking before schedule work for get device map.

Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: arcmsr: Add driver option cmd_per_lun
Ching Huang [Tue, 5 Dec 2017 01:55:02 +0000 (09:55 +0800)]
scsi: arcmsr: Add driver option cmd_per_lun

Add driver option cmd_per_lun to set host->cmd_per_lun value by user.

Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: arcmsr: Replace constant ARCMSR_MAX_OUTSTANDING_CMD
Ching Huang [Tue, 5 Dec 2017 01:51:27 +0000 (09:51 +0800)]
scsi: arcmsr: Replace constant ARCMSR_MAX_OUTSTANDING_CMD

Replace constant ARCMSR_MAX_OUTSTANDING_CMD by variable
acb->maxOutstanding that was determined by user.

Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: arcmsr: Add driver option host_can_queue
Ching Huang [Tue, 5 Dec 2017 01:47:44 +0000 (09:47 +0800)]
scsi: arcmsr: Add driver option host_can_queue

Add driver option host_can_queue to set host->can_queue value by
user. It's value expands up to 1024.

Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: arcmsr: replace constant ARCMSR_MAX_FREECCB_NUM
Ching Huang [Tue, 5 Dec 2017 01:44:23 +0000 (09:44 +0800)]
scsi: arcmsr: replace constant ARCMSR_MAX_FREECCB_NUM

Replace constant ARCMSR_MAX_FREECCB_NUM by variable acb->maxFreeCCB that
was received from firmware.

Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: arcmsr: Increase host controller command queue depth
Ching Huang [Tue, 5 Dec 2017 01:41:25 +0000 (09:41 +0800)]
scsi: arcmsr: Increase host controller command queue depth

Update ARCMSR_MAX_OUTSTANDING_CMD and ARCMSR_MAX_FREECCB_NUM to 1024.

Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: arcmsr: Add code for ACB_ADAPTER_TYPE_E
Ching Huang [Tue, 5 Dec 2017 01:35:34 +0000 (09:35 +0800)]
scsi: arcmsr: Add code for ACB_ADAPTER_TYPE_E

Add code for ACB_ADAPTER_TYPE_E to support new adapter ARC-1884.

Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: arcmsr: simplify arcmsr_iop_init function
Ching Huang [Tue, 5 Dec 2017 01:31:59 +0000 (09:31 +0800)]
scsi: arcmsr: simplify arcmsr_iop_init function

Simplify arcmsr_iop_init function.

Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: arcmsr: Redefine ACB_ADAPTER_TYPE_A, _B, _C, _D
Ching Huang [Tue, 5 Dec 2017 01:28:04 +0000 (09:28 +0800)]
scsi: arcmsr: Redefine ACB_ADAPTER_TYPE_A, _B, _C, _D

Redefine ACB_ADAPTER_TYPE_A, _B, _C, _D and subsequent changes.

Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: ibmvscsis: add DRC indices to debug statements
Bryant G. Ly [Mon, 4 Dec 2017 22:07:28 +0000 (16:07 -0600)]
scsi: ibmvscsis: add DRC indices to debug statements

Where applicable, changes pr_debug, pr_info, pr_err, etc. calls to the
dev_* versions.  This adds the DRC index of the device to the
corresponding trace statement.

Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Signed-off-by: Brad Warrum <bwarrum@us.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: ipr: fix incorrect indentation of assignment statement
Colin Ian King [Fri, 1 Dec 2017 13:33:27 +0000 (13:33 +0000)]
scsi: ipr: fix incorrect indentation of assignment statement

Remove one extraneous level of indentation on an assignment statement.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: csiostor: fix spelling mistake: "Couldnt" -> "Couldn't"
Colin Ian King [Fri, 1 Dec 2017 09:40:09 +0000 (09:40 +0000)]
scsi: csiostor: fix spelling mistake: "Couldnt" -> "Couldn't"

Trivial fix to spelling mistake in error message text.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: bnx2fc: fix spelling mistake: "Couldnt" -> "Couldn't"
Colin Ian King [Fri, 1 Dec 2017 09:37:25 +0000 (09:37 +0000)]
scsi: bnx2fc: fix spelling mistake: "Couldnt" -> "Couldn't"

Trivial fix to spelling mistake in error message text.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: sd: add missing KERN_CONT for disk spin-up
Michał Mirosław [Fri, 24 Nov 2017 17:02:35 +0000 (18:02 +0100)]
scsi: sd: add missing KERN_CONT for disk spin-up

KERN_CONT is now required for continued printks(). Add it.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: ufs: add some definitions included in UFS HCI specification
kwmad.kim@samsung.com [Tue, 28 Nov 2017 05:35:29 +0000 (14:35 +0900)]
scsi: ufs: add some definitions included in UFS HCI specification

These would be used in the future in some specific drivers.

Signed-off-by: Kiwoong Kim <kwmad.kim@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: mpt3sas: Remove unused variable requeue_event
Suganath Prabu S [Sat, 2 Dec 2017 10:19:26 +0000 (02:19 -0800)]
scsi: mpt3sas: Remove unused variable requeue_event

No Functional change just cleanup. Removed variable requeue_event and
made function as void.

Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: mpt3sas: Replace PCI pool old API
Romain Perier [Mon, 20 Nov 2017 19:32:46 +0000 (20:32 +0100)]
scsi: mpt3sas: Replace PCI pool old API

The PCI pool API is deprecated. This commit replaces the PCI pool old
API by the appropriate function with the DMA pool API.

Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: fnic: Fix coccinelle warnings
Vasyl Gomonovych [Tue, 21 Nov 2017 21:15:46 +0000 (22:15 +0100)]
scsi: fnic: Fix coccinelle warnings

Remove the duplicate copies of this simple function and use an
open-coded version.

drivers/scsi/fnic/fnic_debugfs.c:122:11-31: WARNING opportunity for simple_open, see also structure on line 223

Generated by: coccinelle/api/simple_open.cocci

Signed-off-by: Vasyl Gomonovych <gomonovych@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: ses: don't ask for diagnostic pages repeatedly during probe
Li Dongyang [Mon, 13 Nov 2017 23:48:04 +0000 (10:48 +1100)]
scsi: ses: don't ask for diagnostic pages repeatedly during probe

We are testing if there is a match with the ses device in a loop by
calling ses_match_to_enclosure(), which will issue scsi receive
diagnostics commands to the ses device for every device on the same
host.  On one of our boxes with 840 disks, it takes a long time to load
the driver:

[root@g1b-oss06 ~]# time modprobe ses

real 40m48.247s
user 0m0.001s
sys 0m0.196s

With the patch:

[root@g1b-oss06 ~]# time modprobe ses

real 0m17.915s
user 0m0.008s
sys 0m0.053s

Note that we still need to refresh page 10 when we see a new disk to
create the link.

Signed-off-by: Li Dongyang <dongyang.li@anu.edu.au>
Tested-by: Jason Ozolins <jason.ozolins@hpe.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: wd719x: make card_types static const, shrinks object size
Colin Ian King [Tue, 28 Nov 2017 18:12:34 +0000 (18:12 +0000)]
scsi: wd719x: make card_types static const, shrinks object size

Don't populate the read-only array card_types on the stack but instead
make it static and constify it. Makes the object code smaller by over
110 bytes:

Before:
   text    data     bss     dec     hex filename
  25625    5752       0   31377    7a91 drivers/scsi/wd719x.o

After:
   text    data     bss     dec     hex filename
  25447    5816       0   31263    7a1f drivers/scsi/wd719x.o

(gcc version 7.2.0 x86_64)

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: scsi_debug: remove jiffies_to_timespec
Arnd Bergmann [Mon, 27 Nov 2017 11:36:25 +0000 (12:36 +0100)]
scsi: scsi_debug: remove jiffies_to_timespec

There is no need to go through an intermediate timespec to convert to
ktime_t when we just want a simple multiplication. This gets rid of one
of the few users of jiffies_to_timespec, which I hope to remove as part
of the y2038 cleanup.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: hpsa: remove an unnecessary NULL check
Dan Carpenter [Tue, 7 Nov 2017 13:01:32 +0000 (16:01 +0300)]
scsi: hpsa: remove an unnecessary NULL check

device->scsi3addr[] is an array, not a pointer, so it can't be NULL.
I've removed the check.

[mkp: fixed typo]

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: lpfc: update driver version to 11.4.0.5
James Smart [Tue, 21 Nov 2017 00:00:44 +0000 (16:00 -0800)]
scsi: lpfc: update driver version to 11.4.0.5

Update the driver version to 11.4.0.5

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: lpfc: small sg cnt cleanup
James Smart [Tue, 21 Nov 2017 00:00:43 +0000 (16:00 -0800)]
scsi: lpfc: small sg cnt cleanup

The logic for sg_seg_cnt is a bit convoluted. This patch tries to clean
up a couple of areas, especially around the +2 and +1 logic.

This patch:

- Cleans up the lpfc_sg_seg_cnt attribute to specify a real minimum
  rather than making the minimum be whatever the default is.

- Removes the hardcoding of +2 (for the number of elements we use in a
  sgl for cmd iu and rsp iu) and +1 (an additional entry to compensate
  for nvme's reduction of io size based on a possible partial page)
  logic in sg list initialization. In the case where the +1 logic is
  referenced in host and target io checks, use the values set in the
  transport template as that value was properly set.

There can certainly be more done in this area and it will be addressed
in combined host/target driver effort.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: lpfc: Fix driver handling of nvme resources during unload
James Smart [Tue, 21 Nov 2017 00:00:42 +0000 (16:00 -0800)]
scsi: lpfc: Fix driver handling of nvme resources during unload

During driver unload, the driver may crash due to NULL pointers.  The
NULL pointers were due to the driver not protecting itself sufficiently
during some of the teardown paths.  Additionally, the driver was not
waiting for and cleanup up nvme io resources. As such, the driver wasn't
making the callbacks to the transport, stalling the transports
association teardown.

This patch waits for io clean up before tearding down and adds checks
for possible NULL pointers.

Cc: <stable@vger.kernel.org> # 4.12+
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: lpfc: Fix crash during driver unload with running nvme traffic
James Smart [Tue, 21 Nov 2017 00:00:41 +0000 (16:00 -0800)]
scsi: lpfc: Fix crash during driver unload with running nvme traffic

When the driver is unloading, the nvme transport could be in the process
of submitting new requests, will send abort requests to terminate
associations, or may make LS-related requests.  The driver's abort and
request entry points currently is ignorant of the unloading state and is
starting the requests even though the infrastructure to complete them
continues to teardown.

Change the entry points for new requests to check whether unloading and
if so, reject the requests. Abort routines check unloading, and if so,
noop the request. An abort is noop'd as the teardown paths are already
aborting/terminating the io outstanding at the time the teardown
initiated.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: lpfc: Correct driver deregistrations with host nvme transport
James Smart [Tue, 21 Nov 2017 00:00:40 +0000 (16:00 -0800)]
scsi: lpfc: Correct driver deregistrations with host nvme transport

The driver's interaction with the host nvme transport has been incorrect
for a while. The driver did not wait for the unregister callbacks
(waited only 5 jiffies). Thus the driver may remove objects that may be
referenced by subsequent abort commands from the transport, and the
actual unregister callback was effectively a noop. This was especially
problematic if the driver was unloaded.

The driver now waits for the unregister callbacks, as it should, before
continuing with teardown.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: lpfc: correct port registrations with nvme_fc
James Smart [Tue, 21 Nov 2017 00:00:39 +0000 (16:00 -0800)]
scsi: lpfc: correct port registrations with nvme_fc

The driver currently registers any remote port that has NVME support.
It should only be registering target ports.

Register only target ports.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: lpfc: Linux LPFC driver does not process all RSCNs
James Smart [Tue, 21 Nov 2017 00:00:38 +0000 (16:00 -0800)]
scsi: lpfc: Linux LPFC driver does not process all RSCNs

During RSCN storms, the driver does not rediscover some targets.  The
driver marks some RSCN as to be handled after the ones it's working
on. The driver missed processing some deferred RSCN.

Move where the driver checks for deferred RSCNs and initiate deferred
RSCN handling if the flag was set. Also revise nport state within the
RSCN confirm routine. Add some state data to a possible debug print to
aid future debugging.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: lpfc: Fix ndlp ref count for pt2pt mode issue RSCN
James Smart [Tue, 21 Nov 2017 00:00:37 +0000 (16:00 -0800)]
scsi: lpfc: Fix ndlp ref count for pt2pt mode issue RSCN

pt2pt ndlp ref count prematurely goes to 0. There was reference removed
that should only be removed if connected to a switch, not if in
point-to-point mode.

Add a mode check before the reference remove.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: lpfc: Adjust default value of lpfc_nvmet_mrq
James Smart [Tue, 21 Nov 2017 00:00:36 +0000 (16:00 -0800)]
scsi: lpfc: Adjust default value of lpfc_nvmet_mrq

The current default for async hw receive queues is 1, which presents
issues under heavy load as number of queues influence the available
async receive buffer limits.

Raise the default to the either the current hw limit (16) or the number
of hw qs configured (io channel value).

Revise the attribute definition for mrq to better reflect what we do for
hw queues. E.g. 0 means default to optimal (# of cpus), non-zero
specifies a specific limit. Before this change, mrq=0 meant target mode
was disabled. As 0 now has a different meaning, rework the if tests to
use the better nvmet_support check.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: lpfc: Fix display for debugfs queInfo
James Smart [Tue, 21 Nov 2017 00:00:35 +0000 (16:00 -0800)]
scsi: lpfc: Fix display for debugfs queInfo

Display for lpfc/fnX/iDiag/queInfo isn't formatted perfectly.  Corrected
the format strings for the queue info debug messages.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: lpfc: Driver fails to detect direct attach storage array
James Smart [Tue, 21 Nov 2017 00:00:34 +0000 (16:00 -0800)]
scsi: lpfc: Driver fails to detect direct attach storage array

The driver does not respond to PLOGI from the direct attach target.  The
driver uses incorrect S_ID in CONFIG_LINK, after FLOGI completion

Correct by issuing CONFIG_LINK with the correct S_ID after receiving the
PLOGI from the target

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: lpfc: Raise maximum NVME sg list size for 256 elements
James Smart [Tue, 21 Nov 2017 00:00:33 +0000 (16:00 -0800)]
scsi: lpfc: Raise maximum NVME sg list size for 256 elements

Raise the maximum NVME sg list size allowed to 256 elements.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: lpfc: Fix NVME LS abort_xri
James Smart [Tue, 21 Nov 2017 00:00:32 +0000 (16:00 -0800)]
scsi: lpfc: Fix NVME LS abort_xri

Performing an LS abort results in the following message being seen:
  0603 Invalid CQ subtype 6: 00000300 22000002 ffff0016 d0050000
and the associated exchange is not properly freed.

The code did not recognize the exchange type that was aborted, thus it
was not properly handled.

Correct by adding the NVME LS ELS type to the exchange types that are
recognized.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: lpfc: Fix crash after bad bar setup on driver attachment
James Smart [Tue, 21 Nov 2017 00:00:31 +0000 (16:00 -0800)]
scsi: lpfc: Fix crash after bad bar setup on driver attachment

In test cases where an instance of the driver is detached and
reattached, the driver will crash on reattachment. There is a compound
if statement that will skip over the bar setup if the pci_resource_start
call is not successful. The driver erroneously returns success to its
bar setup in this scenario even though the bars aren't properly
configured.

Rework the offending code segment for proper initialization steps.  If
the pci_resource_start call fails, -ENOMEM is now returned.

Sample stack:

rport-5:0-10: blocked FC remote port time out: removing rport
BUG: unable to handle kernel NULL pointer dereference at           (null)
... lpfc_sli4_wait_bmbx_ready+0x32/0x70 [lpfc]
...
...  RIP: 0010:...  ... lpfc_sli4_wait_bmbx_ready+0x32/0x70 [lpfc]
 Call Trace:
  ... lpfc_sli4_post_sync_mbox+0x106/0x4d0 [lpfc]
  ... ? __alloc_pages_nodemask+0x176/0x420
  ... ? __kmalloc+0x2e/0x230
  ... lpfc_sli_issue_mbox_s4+0x533/0x720 [lpfc]
  ... ? mempool_alloc+0x69/0x170
  ... ? dma_generic_alloc_coherent+0x8f/0x140
  ... lpfc_sli_issue_mbox+0xf/0x20 [lpfc]
  ... lpfc_sli4_driver_resource_setup+0xa6f/0x1130 [lpfc]
  ... ? lpfc_pci_probe_one+0x23e/0x16f0 [lpfc]
  ... lpfc_pci_probe_one+0x445/0x16f0 [lpfc]
  ... local_pci_probe+0x45/0xa0
  ... work_for_cpu_fn+0x14/0x20
  ... process_one_work+0x17a/0x440

Cc: <stable@vger.kernel.org> # 4.12+
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: lpfc: Handle XRI_ABORTED_CQE in soft IRQ
James Smart [Tue, 21 Nov 2017 00:00:30 +0000 (16:00 -0800)]
scsi: lpfc: Handle XRI_ABORTED_CQE in soft IRQ

XRI_ABORTED_CQE completions were not being handled in the fast path.
They were being queued and deferred to the lpfc worker thread for
processing. This is an artifact of the driver design prior to moving
queue processing out of the isr and into a workq element. Now that queue
processing is already in a deferred context, remove this artifact and
process them directly.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: lpfc: Expand WQE capability of every NVME hardware queue
James Smart [Tue, 21 Nov 2017 00:00:29 +0000 (16:00 -0800)]
scsi: lpfc: Expand WQE capability of every NVME hardware queue

Hardware queues are a fast staging area to push commands into the
adapter.  The adapter should drain them extremely quickly. However,
under heavy io load, the host cpu is pushing commands faster than the
drain rate of the adapter causing the driver to resource busy commands.

Enlarge the hardware queue (wq & cq) to support a larger number of queue
entries (4x the prior size) before backpressure. Enlarging the queue
requires larger contiguous buffers (16k) per logical page for the
hardware. This changed calling sequences that were expecting 4K page
sizes that now must pass a parameter with the page sizes. It also
required use of a new version of an adapter command that can vary the
page size values.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: lpfc: FLOGI failures are reported when connected to a private loop.
James Smart [Tue, 21 Nov 2017 00:00:28 +0000 (16:00 -0800)]
scsi: lpfc: FLOGI failures are reported when connected to a private loop.

When the HBA is connected to a private loop, the driver reports FLOGI
loop-open failure as functional error. This is an expected condition.

Mark loop-open failure as a warning instead of error.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: bfa: remove unused pointer 'port'
Colin Ian King [Wed, 15 Nov 2017 17:08:49 +0000 (17:08 +0000)]
scsi: bfa: remove unused pointer 'port'

The pointer 'port' is being assigned but it is never read, hence it is
redundant and can be removed. Cleans up clang warning:

drivers/scsi/bfa/bfad_attr.c:505:2: warning: Value stored to 'port' is
never read.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: aacraid: remove unused variable managed_request_id
Colin Ian King [Wed, 15 Nov 2017 16:53:41 +0000 (16:53 +0000)]
scsi: aacraid: remove unused variable managed_request_id

Variable managed_request_id is being assigned but it is never read,
hence it is redundant and can be removed. Cleans up clang warning:

drivers/scsi/aacraid/linit.c:706:5: warning: Value stored to
'managed_request_id' is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: st: fix kernel-doc mismatch
Randy Dunlap [Tue, 21 Nov 2017 02:25:08 +0000 (18:25 -0800)]
scsi: st: fix kernel-doc mismatch

Fix kernel-doc function name and comments in st.c::read_ns_show():
change us to ns to match the function name.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: fix another I2O typo
Randy Dunlap [Sun, 19 Nov 2017 01:46:59 +0000 (17:46 -0800)]
scsi: fix another I2O typo

Correct another typo I20 to I2O.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: csiostor: remove unneeded DRIVER_LICENSE #define
Greg Kroah-Hartman [Fri, 17 Nov 2017 14:21:22 +0000 (15:21 +0100)]
scsi: csiostor: remove unneeded DRIVER_LICENSE #define

There is no need to #define the license of the driver, just put it in
the MODULE_LICENSE() line directly as a text string.

This allows tools that check that the module license matches the source
code license to work properly, as there is no need to unwind the
unneeded dereference, especially when the string is defined in a .h file
far away from the .c file it is used in.

Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Varun Prakash <varun@chelsio.com>
Reported-by: Philippe Ombredanne <pombredanne@nexb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: 3w-9xxx: rework lock timeouts
Arnd Bergmann [Fri, 10 Nov 2017 15:58:27 +0000 (16:58 +0100)]
scsi: 3w-9xxx: rework lock timeouts

The TW_IOCTL_GET_LOCK ioctl uses do_gettimeofday() to check whether a
lock has expired. This can misbehave due to a concurrent settimeofday()
call, as it is based on 'real' time, and it will overflow in y2038 on
32-bit architectures, producing unexpected results when used across the
overflow time.

This changes it to using monotonic time, using ktime_get() to simplify
the code.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Adam Radford <aradford@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: 3ware: use 64-bit times for FW time sync
Arnd Bergmann [Fri, 10 Nov 2017 15:58:26 +0000 (16:58 +0100)]
scsi: 3ware: use 64-bit times for FW time sync

The calculation of the number of seconds since Sunday 00:00:00 overflows
in 2106, meaning that we instead will return the seconds since Wednesday
06:28:16 afterwards.

Using 64-bit time stamps avoids this slight inconsistency, and the
deprecated do_gettimeofday(), replacing it with the simpler
ktime_get_real_seconds().

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Adam Radford <aradford@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: 3ware: fix 32-bit time calculations
Arnd Bergmann [Fri, 10 Nov 2017 15:58:25 +0000 (16:58 +0100)]
scsi: 3ware: fix 32-bit time calculations

twl_aen_queue_event/twa_aen_queue_event, we use do_gettimeofday() to
read the lower 32 bits of the current time in seconds, to pass them to
the TW_IOCTL_GET_NEXT_EVENT ioctl or the 3ware_aen_read sysfs file.

This will overflow on all architectures in year 2106, there is not much
we can do about that without breaking the ABI. User space has 90 years
to learn to deal with it, so it's probably ok.

I'm changing it to use ktime_get_real_seconds() with a comment to
document what happens when.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Adam Radford <aradford@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: bfa: use 64-bit times in bfa_aen_entry_s ABI
Arnd Bergmann [Fri, 10 Nov 2017 15:37:15 +0000 (16:37 +0100)]
scsi: bfa: use 64-bit times in bfa_aen_entry_s ABI

bfa_aen_entry_s is passed through a netlink socket that can be read by
either 32-bit or 64-bit processes, but the data format is different
between the two on current implementations.

Originally, this was using a 'struct timeval', which also suffers from
getting redefined with a new libc implementation.

With this patch, the layout gets fixed to having two 64-bit members for
the time, making it the same on 32-bit kernels and 64-bit kernels
running either compat or native user space including x32.

Provided that the new header file gets used to recompile any 32-bit
application binaries, this will fix running those on a 64-bit kernel
(with or without this patch) e.g. in a container environment, and it
will make binaries work that will be built against a future 32-bit glibc
that uses a 64-bit time_t, and avoid the y2038 overflow there.

However, this also breaks compatibility with any existing 32-bit binary
running on a native 32-bit kernel, those must be recompiled against the
new header, which in turn makes them incompatible with older kernels
unless the same change gets applied there.

Obviously this patch should only be applied when the benefits outweigh
the possible breakage. I'm posting it under the assumption that there
are no open-source tools using the netlink interface, and that users of
the binaries provided by qlogic for SLES10/11 and RHEL5/6 are not
actually being used on new future systems with 32-bit x86 kernels.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Anil Gurumurthy <Anil.Gurumurthy@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: bfa: try to sanitize vendor netlink events
Arnd Bergmann [Fri, 10 Nov 2017 15:37:14 +0000 (16:37 +0100)]
scsi: bfa: try to sanitize vendor netlink events

bfa_aen_entry_s is passed to user space in a netlink message, but is
defined using a 'struct timeval' and an 'enum' that are not only
different between architectures, but also between 32-bit user space and
64-bit kernels they may run on, as well as depending on the particular C
library that defines timeval.

This changes the in-kernel definition to no longer use the timeval type
directly but instead use two open-coded 'unsigned long' members.  This
keeps the existing ABI, but making the variable unsigned also helps make
it work after y2038, until it overflows in 2106.

Since the macro becomes overly complex at this point, I'm changing it to
an inline function for readability.

I'm not changing the 32-bit user-space ABI at this point, to keep the
changes separate, I deally this would be defined using the same binary
layout for all architectures.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Anil Gurumurthy <Anil.Gurumurthy@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: bfa: replace bfa_get_log_time() with ktime_get_real_seconds()
Arnd Bergmann [Fri, 10 Nov 2017 15:37:13 +0000 (16:37 +0100)]
scsi: bfa: replace bfa_get_log_time() with ktime_get_real_seconds()

The bfa_get_log_time() returns a 64-bit timestamp that does not suffer
from the y2038 overflow on 64-bit systems. However, on 32-bit
architectures the timestamp will jump from 0x000000007fffffff to
0xffffffff80000000 in y2038 and produce wrong results.

The ktime_get_real_seconds() function does the same thing as
bfa_get_log_time() without that problem, so we can simply remove the
former use ktime_get_real_seconds() instead.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Anil Gurumurthy <Anil.Gurumurthy@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: bfa: document overflow of io_profile_start_time
Arnd Bergmann [Fri, 10 Nov 2017 15:37:12 +0000 (16:37 +0100)]
scsi: bfa: document overflow of io_profile_start_time

io_profile_start_time() gets read using do_gettimeofday() and passed
down as a 32-bit value through multiple functions. This will overflow in
y2038 or y2106, depending on whether it gets interpreted as unsigned in
the end.

This changes do_gettimeofday() to ktime_get_real_seconds() and pushes
the point at which it overflows to where we actually assign it to the
bfa_fcpim_del_itn_stats_s structure, with an appropriate comment.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Anil Gurumurthy <Anil.Gurumurthy@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: bfa: improve bfa_ioc_send_enable/disable data
Arnd Bergmann [Fri, 10 Nov 2017 15:37:11 +0000 (16:37 +0100)]
scsi: bfa: improve bfa_ioc_send_enable/disable data

In bfa_ioc_send_enable, we use the deprecated do_gettimeofday() function
to read the current time. This is not a problem, since the firmware
interface is already limited to 32-bit timestamps, but it's better to
use ktime_get_seconds() and document what the limitation is.

I noticed that I did the same change in commit a5af83925363 ("bna: avoid
writing uninitialized data into hw registers") for the ethernet
driver. That commit also changed the "disable" funtion to initialize the
data we pass to the firmware properly, so I'm doing the same thing here.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Anil Gurumurthy <Anil.Gurumurthy@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: bfa: use proper time accessor for stats_reset_time
Arnd Bergmann [Fri, 10 Nov 2017 15:37:10 +0000 (16:37 +0100)]
scsi: bfa: use proper time accessor for stats_reset_time

We use the deprecated do_gettimeofday() function to read the current
time when resetting the statistics in both bfa_port and bfa_svc. This
works fine because overflow is handled correctly, but we want to get rid
of do_gettimeofday() and using a non-monotonic time suffers from
concurrent settimeofday calls and other problems.

This uses the ktime_get_seconds() function instead, which does what we
need here.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Anil Gurumurthy <Anil.Gurumurthy@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: bfa: use ktime_get_real_ts64 for firmware timestamp
Arnd Bergmann [Fri, 10 Nov 2017 15:37:09 +0000 (16:37 +0100)]
scsi: bfa: use ktime_get_real_ts64 for firmware timestamp

BFA_TRC_TS() calculates a 32-bit microsecond timestamp using the
deprecated do_gettimeofday() function. This overflows roughly every 71
minutes, so it's obviously not used as an absolute time stamp, but it
seems wrong to use a time base for it that will jump during
settimeofday() calls, leap seconds, or the y2038 overflow.

This converts it to ktime_get_ts64(), which has none of those problems
but is not synchronized to wall-clock time.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Anil Gurumurthy <Anil.Gurumurthy@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: ppa: mark expected switch fall-throughs
Gustavo A. R. Silva [Wed, 8 Nov 2017 17:17:39 +0000 (11:17 -0600)]
scsi: ppa: mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Addresses-Coverity-ID: 114988
Addresses-Coverity-ID: 114989
Addresses-Coverity-ID: 114990
Addresses-Coverity-ID: 114991
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoscsi: bnx2i: bnx2i_hwi: use swap macro in bnx2i_send_iscsi_nopout
Gustavo A. R. Silva [Fri, 3 Nov 2017 19:58:39 +0000 (14:58 -0500)]
scsi: bnx2i: bnx2i_hwi: use swap macro in bnx2i_send_iscsi_nopout

Make use of the swap macro and remove unnecessary variable tmp.  This
makes the code easier to read and maintain.

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Acked-by: Manish Rangankar <Manish.Rangankar@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
6 years agoLinux 4.15-rc1
Linus Torvalds [Mon, 27 Nov 2017 00:01:47 +0000 (16:01 -0800)]
Linux 4.15-rc1

6 years agoMerge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm
Linus Torvalds [Sun, 26 Nov 2017 23:03:49 +0000 (15:03 -0800)]
Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM fixes from Russell King:

 - LPAE fixes for kernel-readonly regions

 - Fix for get_user_pages_fast on LPAE systems

 - avoid tying decompressor to a particular platform if DEBUG_LL is
   enabled

 - BUG if we attempt to return to userspace but the to-be-restored PSR
   value keeps us in privileged mode (defeating an issue that ftracetest
   found)

* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: BUG if jumping to usermode address in kernel mode
  ARM: 8722/1: mm: make STRICT_KERNEL_RWX effective for LPAE
  ARM: 8721/1: mm: dump: check hardware RO bit for LPAE
  ARM: make decompressor debug output user selectable
  ARM: fix get_user_pages_fast

6 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Nov 2017 22:39:20 +0000 (14:39 -0800)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull irq fixes from Thomas Glexiner:

 - unbreak the irq trigger type check for legacy platforms

 - a handful fixes for ARM GIC v3/4 interrupt controllers

 - a few trivial fixes all over the place

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq/matrix: Make - vs ?: Precedence explicit
  irqchip/imgpdc: Use resource_size function on resource object
  irqchip/qcom: Fix u32 comparison with value less than zero
  irqchip/exiu: Fix return value check in exiu_init()
  irqchip/gic-v3-its: Remove artificial dependency on PCI
  irqchip/gic-v4: Add forward definition of struct irq_domain_ops
  irqchip/gic-v3: pr_err() strings should end with newlines
  irqchip/s3c24xx: pr_err() strings should end with newlines
  irqchip/gic-v3: Fix ppi-partitions lookup
  irqchip/gic-v4: Clear IRQ_DISABLE_UNLAZY again if mapping fails
  genirq: Track whether the trigger type has been set

6 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Nov 2017 22:11:54 +0000 (14:11 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull misc x86 fixes from Ingo Molnar:
 - topology enumeration fixes
 - KASAN fix
 - two entry fixes (not yet the big series related to KASLR)
 - remove obsolete code
 - instruction decoder fix
 - better /dev/mem sanity checks, hopefully working better this time
 - pkeys fixes
 - two ACPI fixes
 - 5-level paging related fixes
 - UMIP fixes that should make application visible faults more debuggable
 - boot fix for weird virtualization environment

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)
  x86/decoder: Add new TEST instruction pattern
  x86/PCI: Remove unused HyperTransport interrupt support
  x86/umip: Fix insn_get_code_seg_params()'s return value
  x86/boot/KASLR: Remove unused variable
  x86/entry/64: Add missing irqflags tracing to native_load_gs_index()
  x86/mm/kasan: Don't use vmemmap_populate() to initialize shadow
  x86/entry/64: Fix entry_SYSCALL_64_after_hwframe() IRQ tracing
  x86/pkeys/selftests: Fix protection keys write() warning
  x86/pkeys/selftests: Rename 'si_pkey' to 'siginfo_pkey'
  x86/mpx/selftests: Fix up weird arrays
  x86/pkeys: Update documentation about availability
  x86/umip: Print a warning into the syslog if UMIP-protected instructions are used
  x86/smpboot: Fix __max_logical_packages estimate
  x86/topology: Avoid wasting 128k for package id array
  perf/x86/intel/uncore: Cache logical pkg id in uncore driver
  x86/acpi: Reduce code duplication in mp_override_legacy_irq()
  x86/acpi: Handle SCI interrupts above legacy space gracefully
  x86/boot: Fix boot failure when SMP MP-table is based at 0
  x86/mm: Limit mmap() of /dev/mem to valid physical addresses
  x86/selftests: Add test for mapping placement for 5-level paging
  ...

6 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Nov 2017 21:43:25 +0000 (13:43 -0800)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Misc fixes: a documentation fix, a Sparse warning fix and a debugging
  fix"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/debug: Fix task state recording/printout
  sched/deadline: Don't use dubious signed bitfields
  sched/deadline: Fix the description of runtime accounting in the documentation

6 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Nov 2017 21:41:48 +0000 (13:41 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Misc fixes: two PMU driver fixes and a memory leak fix"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/core: Fix memory leak triggered by perf --namespace
  perf/x86/intel/uncore: Add event constraint for BDX PCU
  perf/x86/intel: Hide TSX events when RTM is not supported

6 years agoMerge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Nov 2017 21:36:54 +0000 (13:36 -0800)]
Merge branch 'locking-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull static key fix from Ingo Molnar:
 "Fix a boot warning related to bad init ordering of the static keys
  self-test"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  jump_label: Invoke jump_label_test() via early_initcall()

6 years agoMerge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Nov 2017 21:11:18 +0000 (13:11 -0800)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull objtool fixes from Ingo Molnar:
 "A handful of objtool fixes, most of them related to making the UAPI
  header-syncing warnings easier to read and easier to act upon"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  tools/headers: Sync objtool UAPI header
  objtool: Fix cross-build
  objtool: Move kernel headers/code sync check to a script
  objtool: Move synced files to their original relative locations
  objtool: Make unreachable annotation inline asms explicitly volatile
  objtool: Add a comment for the unreachable annotation macros

6 years agoARM: BUG if jumping to usermode address in kernel mode
Russell King [Fri, 24 Nov 2017 23:49:34 +0000 (23:49 +0000)]
ARM: BUG if jumping to usermode address in kernel mode

Detect if we are returning to usermode via the normal kernel exit paths
but the saved PSR value indicates that we are in kernel mode.  This
could occur due to corrupted stack state, which has been observed with
"ftracetest".

This ensures that we catch the problem case before we get to user code.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
6 years agoMerge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 25 Nov 2017 18:37:16 +0000 (08:37 -1000)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull timer updates from Thomas Gleixner:

 - The final conversion of timer wheel timers to timer_setup().

   A few manual conversions and a large coccinelle assisted sweep and
   the removal of the old initialization mechanisms and the related
   code.

 - Remove the now unused VSYSCALL update code

 - Fix permissions of /proc/timer_list. I still need to get rid of that
   file completely

 - Rename a misnomed clocksource function and remove a stale declaration

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits)
  m68k/macboing: Fix missed timer callback assignment
  treewide: Remove TIMER_FUNC_TYPE and TIMER_DATA_TYPE casts
  timer: Remove redundant __setup_timer*() macros
  timer: Pass function down to initialization routines
  timer: Remove unused data arguments from macros
  timer: Switch callback prototype to take struct timer_list * argument
  timer: Pass timer_list pointer to callbacks unconditionally
  Coccinelle: Remove setup_timer.cocci
  timer: Remove setup_*timer() interface
  timer: Remove init_timer() interface
  treewide: setup_timer() -> timer_setup() (2 field)
  treewide: setup_timer() -> timer_setup()
  treewide: init_timer() -> setup_timer()
  treewide: Switch DEFINE_TIMER callbacks to struct timer_list *
  s390: cmm: Convert timers to use timer_setup()
  lightnvm: Convert timers to use timer_setup()
  drivers/net: cris: Convert timers to use timer_setup()
  drm/vc4: Convert timers to use timer_setup()
  block/laptop_mode: Convert timers to use timer_setup()
  net/atm/mpc: Avoid open-coded assignment of timer callback function
  ...

6 years agoMerge tag 'arc-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Linus Torvalds [Sat, 25 Nov 2017 18:21:54 +0000 (08:21 -1000)]
Merge tag 'arc-4.15-rc1' of git://git./linux/kernel/git/vgupta/arc

Pull ARC updates from Vineet Gupta:

 - more changes for HS48 cores: supporting MMUv5, detecting new
   micro-arch gizmos

 - axs10x platform wiring up reset driver merged in this cycle

 - ARC perf driver optimizations

* tag 'arc-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: perf: avoid vmalloc backed mmap
  ARCv2: perf: optimize given that num counters <= 32
  ARCv2: perf: tweak overflow interrupt
  ARC: [plat-axs10x] DTS: Add reset controller node to manage ethernet reset
  ARCv2: boot log: updates for HS48: dual-issue, ECC, Loop Buffer
  ARCv2: Accomodate HS48 MMUv5 by relaxing MMU ver checking
  ARC: [plat-axs10x] auto-select AXS101 or AXS103 given the  ISA config

6 years agoMerge tag 'kbuild-v4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy...
Linus Torvalds [Sat, 25 Nov 2017 18:06:30 +0000 (08:06 -1000)]
Merge tag 'kbuild-v4.15-2' of git://git./linux/kernel/git/masahiroy/linux-kbuild

Pull more Kbuild updates from Masahiro Yamada:

 - use 'pwd' instead of '/bin/pwd' for portability

 - clean up Makefiles

 - fix ld-option for clang

 - fix malloc'ed data size in Kconfig

 - fix parallel building along with coccicheck

 - fix a minor issue of package building

 - prompt to use "rpm-pkg" instead of "rpm"

 - clean up *.i and *.lst patterns by "make clean"

* tag 'kbuild-v4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: drop $(extra-y) from real-objs-y
  kbuild: clean up *.i and *.lst patterns by make clean
  kbuild: rpm: prompt to use "rpm-pkg" if "rpm" target is used
  kbuild: pkg: use --transform option to prefix paths in tar
  coccinelle: fix parallel build with CHECK=scripts/coccicheck
  kconfig/symbol.c: use correct pointer type argument for sizeof
  kbuild: Set KBUILD_CFLAGS before incl. arch Makefile
  kbuild: remove all dummy assignments to obj-
  kbuild: create built-in.o automatically if parent directory wants it
  kbuild: /bin/pwd -> pwd

6 years agoMerge tag 'afs-fixes-20171124' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowe...
Linus Torvalds [Sat, 25 Nov 2017 17:58:25 +0000 (07:58 -1000)]
Merge tag 'afs-fixes-20171124' of git://git./linux/kernel/git/dhowells/linux-fs

Pull AFS fixes from David Howells:

 - Make AFS file locking work again.

 - Don't write to a page that's being written out, but wait for it to
   complete.

 - Do d_drop() and d_add() in the right places.

 - Put keys on error paths.

 - Remove some redundant code.

* tag 'afs-fixes-20171124' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
  afs: remove redundant assignment of dvnode to itself
  afs: cell: Remove unnecessary code in afs_lookup_cell
  afs: Fix signal handling in some file ops
  afs: Fix some dentry handling in dir ops and missing key_puts
  afs: Make afs_write_begin() avoid writing to a page that's being stored
  afs: Fix file locking

6 years agoMerge tag 'kvm-4.15-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sat, 25 Nov 2017 05:44:25 +0000 (19:44 -1000)]
Merge tag 'kvm-4.15-2' of git://git./virt/kvm/kvm

Pull KVM updates from Radim Krčmář:
 "Trimmed second batch of KVM changes for Linux 4.15:

   - GICv4 Support for KVM/ARM

   - re-introduce support for CPUs without virtual NMI (cc stable) and
     allow testing of KVM without virtual NMI on available CPUs

   - fix long-standing performance issues with assigned devices on AMD
     (cc stable)"

* tag 'kvm-4.15-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (30 commits)
  kvm: vmx: Allow disabling virtual NMI support
  kvm: vmx: Reinstate support for CPUs without virtual NMI
  KVM: SVM: obey guest PAT
  KVM: arm/arm64: Don't queue VLPIs on INV/INVALL
  KVM: arm/arm64: Fix GICv4 ITS initialization issues
  KVM: arm/arm64: GICv4: Theory of operations
  KVM: arm/arm64: GICv4: Enable VLPI support
  KVM: arm/arm64: GICv4: Prevent userspace from changing doorbell affinity
  KVM: arm/arm64: GICv4: Prevent a VM using GICv4 from being saved
  KVM: arm/arm64: GICv4: Enable virtual cpuif if VLPIs can be delivered
  KVM: arm/arm64: GICv4: Hook vPE scheduling into vgic flush/sync
  KVM: arm/arm64: GICv4: Use the doorbell interrupt as an unblocking source
  KVM: arm/arm64: GICv4: Add doorbell interrupt handling
  KVM: arm/arm64: GICv4: Use pending_last as a scheduling hint
  KVM: arm/arm64: GICv4: Handle INVALL applied to a vPE
  KVM: arm/arm64: GICv4: Propagate property updates to VLPIs
  KVM: arm/arm64: GICv4: Handle MOVALL applied to a vPE
  KVM: arm/arm64: GICv4: Handle CLEAR applied to a VLPI
  KVM: arm/arm64: GICv4: Propagate affinity changes to the physical ITS
  KVM: arm/arm64: GICv4: Unmap VLPI when freeing an LPI
  ...

6 years agoMerge tag 'powerpc-4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sat, 25 Nov 2017 05:40:12 +0000 (19:40 -1000)]
Merge tag 'powerpc-4.15-2' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "A small batch of fixes, about 50% tagged for stable and the rest for
  recently merged code.

  There's one more fix for the >128T handling on hash. Once a process
  had requested a single mmap above 128T we would then always search
  above 128T. The correct behaviour is to consider the hint address in
  isolation for each mmap request.

  Then a couple of fixes for the IMC PMU, a missing EXPORT_SYMBOL in
  VAS, a fix for STRICT_KERNEL_RWX on 32-bit, and a fix to correctly
  identify P9 DD2.1 but in code that is currently not used by default.

  Thanks to: Aneesh Kumar K.V, Christophe Leroy, Madhavan Srinivasan,
  Sukadev Bhattiprolu"

* tag 'powerpc-4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/64s: Fix Power9 DD2.1 logic in DT CPU features
  powerpc/perf: Fix IMC_MAX_PMU macro
  powerpc/perf: Fix pmu_count to count only nest imc pmus
  powerpc: Fix boot on BOOK3S_32 with CONFIG_STRICT_KERNEL_RWX
  powerpc/perf/imc: Use cpu_to_node() not topology_physical_package_id()
  powerpc/vas: Export chip_to_vas_id()
  powerpc/64s/slice: Use addr limit when computing slice mask

6 years agoMerge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target...
Linus Torvalds [Sat, 25 Nov 2017 05:19:20 +0000 (19:19 -1000)]
Merge branch 'for-next' of git://git./linux/kernel/git/nab/target-pending

Pull SCSI target updates from Nicholas Bellinger:

 "This series is predominantly bug-fixes, with a few small improvements
  that have been outstanding over the last release cycle.

  As usual, the associated bug-fixes have CC' tags for stable.

  Also, things have been particularly quiet wrt new developments the
  last months, with most folks continuing to focus on stability atop 4.x
  stable kernels for their respective production configurations.

  Also at this point, the stable trees have been synced up with
  mainline. This will continue to be a priority, as production users
  tend to run exclusively atop stable kernels, a few releases behind
  mainline.

  The highlights include:

   - Fix PR PREEMPT_AND_ABORT null pointer dereference regression in
     v4.11+ (tangwenji)

   - Fix OOPs during removing TCMU device (Xiubo Li + Zhang Zhuoyu)

   - Add netlink command reply supported option for each device (Kenjiro
     Nakayama)

   - cxgbit: Abort the TCP connection in case of data out timeout (Varun
     Prakash)

   - Fix PR/ALUA file path truncation (David Disseldorp)

   - Fix double se_cmd completion during ->cmd_time_out (Mike Christie)

   - Fix QUEUE_FULL + SCSI task attribute handling in 4.1+ (Bryant Ly +
     nab)

   - Fix quiese during transport_write_pending_qf endless loop (nab)

   - Avoid early CMD_T_PRE_EXECUTE failures during ABORT_TASK in 3.14+
     (Don White + nab)"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (35 commits)
  tcmu: Add a missing unlock on an error path
  tcmu: Fix some memory corruption
  iscsi-target: Fix non-immediate TMR reference leak
  iscsi-target: Make TASK_REASSIGN use proper se_cmd->cmd_kref
  target: Avoid early CMD_T_PRE_EXECUTE failures during ABORT_TASK
  target: Fix quiese during transport_write_pending_qf endless loop
  target: Fix caw_sem leak in transport_generic_request_failure
  target: Fix QUEUE_FULL + SCSI task attribute handling
  iSCSI-target: Use common error handling code in iscsi_decode_text_input()
  target/iscsi: Detect conn_cmd_list corruption early
  target/iscsi: Fix a race condition in iscsit_add_reject_from_cmd()
  target/iscsi: Modify iscsit_do_crypto_hash_buf() prototype
  target/iscsi: Fix endianness in an error message
  target/iscsi: Use min() in iscsit_dump_data_payload() instead of open-coding it
  target/iscsi: Define OFFLOAD_BUF_SIZE once
  target: Inline transport_put_cmd()
  target: Suppress gcc 7 fallthrough warnings
  target: Move a declaration of a global variable into a header file
  tcmu: fix double se_cmd completion
  target: return SAM_STAT_TASK_SET_FULL for TCM_OUT_OF_RESOURCES
  ...

6 years agom68k/macboing: Fix missed timer callback assignment
Kees Cook [Thu, 23 Nov 2017 22:19:02 +0000 (14:19 -0800)]
m68k/macboing: Fix missed timer callback assignment

This fixes a missed function prototype callback from the timer conversions.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20171123221902.GA75727@beast
6 years agoafs: remove redundant assignment of dvnode to itself
Colin Ian King [Mon, 20 Nov 2017 13:58:20 +0000 (13:58 +0000)]
afs: remove redundant assignment of dvnode to itself

The assignment of dvnode to itself is redundant and can be removed.
Cleans up warning detected by cppcheck:

fs/afs/dir.c:975: (warning) Redundant assignment of 'dvnode' to itself.

Fixes: d2ddc776a458 ("afs: Overhaul volume and server record caching and fileserver rotation")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David Howells <dhowells@redhat.com>
6 years agoafs: cell: Remove unnecessary code in afs_lookup_cell
Gustavo A. R. Silva [Fri, 17 Nov 2017 22:40:32 +0000 (16:40 -0600)]
afs: cell: Remove unnecessary code in afs_lookup_cell

Due to recent changes this piece of code is no longer needed.

Addresses-Coverity-ID: 1462033
Link: https://lkml.kernel.org/r/4923.1510957307@warthog.procyon.org.uk
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
6 years agoafs: Fix signal handling in some file ops
David Howells [Mon, 20 Nov 2017 22:41:00 +0000 (22:41 +0000)]
afs: Fix signal handling in some file ops

afs_mkdir(), afs_create(), afs_link() and afs_symlink() all need to drop
the target dentry if a signal causes the operation to be killed immediately
before we try to contact the server.

Signed-off-by: David Howells <dhowells@redhat.com>
6 years agoafs: Fix some dentry handling in dir ops and missing key_puts
David Howells [Mon, 20 Nov 2017 23:04:08 +0000 (23:04 +0000)]
afs: Fix some dentry handling in dir ops and missing key_puts

Fix some of dentry handling in AFS directory ops:

 (1) Do d_drop() on the new_dentry before assigning a new inode to it in
     afs_vnode_new_inode().  It's fine to do this before calling afs_iget()
     because the operation has taken place on the server.

 (2) Replace d_instantiate()/d_rehash() with d_add().

 (3) Don't d_drop() the new_dentry in afs_rename() on error.

Also fix afs_link() and afs_rename() to call key_put() on all error paths
where the key is taken.

Signed-off-by: David Howells <dhowells@redhat.com>
6 years agoafs: Make afs_write_begin() avoid writing to a page that's being stored
David Howells [Sat, 18 Nov 2017 00:13:30 +0000 (00:13 +0000)]
afs: Make afs_write_begin() avoid writing to a page that's being stored

Make afs_write_begin() wait for a page that's marked PG_writeback because:

 (1) We need to avoid interference with the data being stored so that the
     data on the server ends up in a defined state.

 (2) page->private is used to track the window of dirty data within a page,
     but it's also used by the storage code to track what's being written,
     being cleared by the completion notification.  Ownership can't be
     relinquished by the storage code until completion because it a store
     fails, the data must be remarked dirty.

Tracing shows something like the following (edited):

 x86_64-linux-gn-15940 [1] afs_page_dirty: vn=ffff8800bef33800 9c75 begin 0-125
    kworker/u8:3-114   [2] afs_page_dirty: vn=ffff8800bef33800 9c75 store+ 0-125
 x86_64-linux-gn-15940 [1] afs_page_dirty: vn=ffff8800bef33800 9c75 begin 0-2052
    kworker/u8:3-114   [2] afs_page_dirty: vn=ffff8800bef33800 9c75 clear 0-2052
    kworker/u8:3-114   [2] afs_page_dirty: vn=ffff8800bef33800 9c75 store 0-0
    kworker/u8:3-114   [2] afs_page_dirty: vn=ffff8800bef33800 9c75 WARN 0-0

The clear (completion) corresponding to the store+ (store continuation from
a previous page) happens between the second begin (afs_write_begin) and the
store corresponding to that.  This results in the second store not seeing
any data to write back, leading to the following warning:

WARNING: CPU: 2 PID: 114 at ../fs/afs/write.c:403 afs_write_back_from_locked_page+0x19d/0x76c [kafs]
Modules linked in: kafs(E)
CPU: 2 PID: 114 Comm: kworker/u8:3 Tainted: G            E   4.14.0-fscache+ #242
Hardware name: ASUS All Series/H97-PLUS, BIOS 2306 10/09/2014
Workqueue: writeback wb_workfn (flush-afs-2)
task: ffff8800cad72600 task.stack: ffff8800cad44000
RIP: 0010:afs_write_back_from_locked_page+0x19d/0x76c [kafs]
RSP: 0018:ffff8800cad47aa0 EFLAGS: 00010246
RAX: 0000000000000001 RBX: ffff8800bef33a20 RCX: 0000000000000000
RDX: 000000000000000f RSI: ffffffff81c5d0e0 RDI: ffff8800cad72e78
RBP: ffff8800d31ea1e8 R08: ffff8800c1358000 R09: ffff8800ca00e400
R10: ffff8800cad47a38 R11: ffff8800c5d9e400 R12: 0000000000000000
R13: ffffea0002d9df00 R14: ffffffffa0023c1c R15: 0000000000007fdf
FS:  0000000000000000(0000) GS:ffff8800ca700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f85ac6c4000 CR3: 0000000001c10001 CR4: 00000000001606e0
Call Trace:
 ? clear_page_dirty_for_io+0x23a/0x267
 afs_writepages_region+0x1be/0x286 [kafs]
 afs_writepages+0x60/0x127 [kafs]
 do_writepages+0x36/0x70
 __writeback_single_inode+0x12f/0x635
 writeback_sb_inodes+0x2cc/0x452
 __writeback_inodes_wb+0x68/0x9f
 wb_writeback+0x208/0x470
 ? wb_workfn+0x22b/0x565
 wb_workfn+0x22b/0x565
 ? worker_thread+0x230/0x2ac
 process_one_work+0x2cc/0x517
 ? worker_thread+0x230/0x2ac
 worker_thread+0x1d4/0x2ac
 ? rescuer_thread+0x29b/0x29b
 kthread+0x15d/0x165
 ? kthread_create_on_node+0x3f/0x3f
 ? call_usermodehelper_exec_async+0x118/0x11f
 ret_from_fork+0x24/0x30

Signed-off-by: David Howells <dhowells@redhat.com>
6 years agosched/debug: Fix task state recording/printout
Thomas Gleixner [Wed, 22 Nov 2017 12:05:48 +0000 (13:05 +0100)]
sched/debug: Fix task state recording/printout

The recent conversion of the task state recording to use task_state_index()
broke the sched_switch tracepoint task state output.

task_state_index() returns surprisingly an index (0-7) which is then
printed with __print_flags() applying bitmasks. Not really working and
resulting in weird states like 'prev_state=t' instead of 'prev_state=I'.

Use TASK_REPORT_MAX instead of TASK_STATE_MAX to report preemption. Build a
bitmask from the return value of task_state_index() and store it in
entry->prev_state, which makes __print_flags() work as expected.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: stable@vger.kernel.org
Fixes: efb40f588b43 ("sched/tracing: Fix trace_sched_switch task-state printing")
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1711221304180.1751@nanos
Signed-off-by: Ingo Molnar <mingo@kernel.org>
6 years agox86/decoder: Add new TEST instruction pattern
Masami Hiramatsu [Fri, 24 Nov 2017 04:56:30 +0000 (13:56 +0900)]
x86/decoder: Add new TEST instruction pattern

The kbuild test robot reported this build warning:

  Warning: arch/x86/tools/test_get_len found difference at <jump_table>:ffffffff8103dd2c

  Warning: ffffffff8103dd82: f6 09 d8 testb $0xd8,(%rcx)
  Warning: objdump says 3 bytes, but insn_get_length() says 2
  Warning: decoded and checked 1569014 instructions with 1 warnings

This sequence seems to be a new instruction not in the opcode map in the Intel SDM.

The instruction sequence is "F6 09 d8", means Group3(F6), MOD(00)REG(001)RM(001), and 0xd8.
Intel SDM vol2 A.4 Table A-6 said the table index in the group is "Encoding of Bits 5,4,3 of
the ModR/M Byte (bits 2,1,0 in parenthesis)"

In that table, opcodes listed by the index REG bits as:

  000         001       010 011  100        101        110         111
 TEST Ib/Iz,(undefined),NOT,NEG,MUL AL/rAX,IMUL AL/rAX,DIV AL/rAX,IDIV AL/rAX

So, it seems TEST Ib is assigned to 001.

Add the new pattern.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: <stable@vger.kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Fri, 24 Nov 2017 07:18:46 +0000 (21:18 -1000)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Fix PCI IDs of 9000 series iwlwifi devices, from Luca Coelho.

 2) bpf offload bug fixes from Jakub Kicinski.

 3) Fix bpf verifier to NOP out code which is dead at run time because
    due to branch pruning the verifier will not explore such
    instructions. From Alexei Starovoitov.

 4) Fix crash when deleting secondary chains in packet scheduler
    classifier. From Roman Kapl.

 5) Fix buffer management bugs in smc, from Ursula Braun.

 6) Fix regression in anycast route handling, from David Ahern.

 7) Fix link settings regression in r8169, from Tobias Jakobi.

 8) Add back enough UFO support so that live migration still works, from
    Willem de Bruijn.

 9) Linearize enough packet data for the full extent to which the ipvlan
    code will inspect the packet headers, from Gao Feng.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (46 commits)
  ipvlan: Fix insufficient skb linear check for ipv6 icmp
  ipvlan: Fix insufficient skb linear check for arp
  geneve: only configure or fill UDP_ZERO_CSUM6_RX/TX info when CONFIG_IPV6
  net: dsa: bcm_sf2: Clear IDDQ_GLOBAL_PWR bit for PHY
  net: accept UFO datagrams from tuntap and packet
  net: realtek: r8169: implement set_link_ksettings()
  net: ipv6: Fixup device for anycast routes during copy
  net/smc: Fix preinitialization of buf_desc in __smc_buf_create()
  net/smc: use sk_rcvbuf as start for rmb creation
  ipv6: Do not consider linkdown nexthops during multipath
  net: sched: fix crash when deleting secondary chains
  net: phy: cortina: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE
  bpf: fix branch pruning logic
  bpf: change bpf_perf_event_output arg5 type to ARG_CONST_SIZE_OR_ZERO
  bpf: change bpf_probe_read_str arg2 type to ARG_CONST_SIZE_OR_ZERO
  bpf: remove explicit handling of 0 for arg2 in bpf_probe_read
  bpf: introduce ARG_PTR_TO_MEM_OR_NULL
  i40evf: Use smp_rmb rather than read_barrier_depends
  fm10k: Use smp_rmb rather than read_barrier_depends
  igb: Use smp_rmb rather than read_barrier_depends
  ...

6 years agoMerge tag 'platform-drivers-x86-v4.15-2' of git://git.infradead.org/linux-platform...
Linus Torvalds [Fri, 24 Nov 2017 07:14:30 +0000 (21:14 -1000)]
Merge tag 'platform-drivers-x86-v4.15-2' of git://git.infradead.org/linux-platform-drivers-x86

Pull x86 platform driver fixes from Darren Hart:
 "Fix two issues resulting from the dell-smbios refactoring and
  introduction of the dell-smbios-wmi dispatcher.

  The first ensures a proper error code is returned when kzalloc fails.

  The second avoids an issue in older Dell BIOS implementations which
  would fail if the more complex calls were made by limiting those
  platforms to the simple calls such as those used by the existing
  dell-laptop and dell-wmi drivers, preserving their functionality prior
  to the addition of the dell-smbios-wmi dispatcher"

* tag 'platform-drivers-x86-v4.15-2' of git://git.infradead.org/linux-platform-drivers-x86:
  platform/x86: dell-laptop: fix error return code in dell_init()
  platform/x86: dell-smbios-wmi: Disable userspace interface if missing hotfix

6 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Fri, 24 Nov 2017 07:12:58 +0000 (21:12 -1000)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Two basic fixes: one for the sparse problem with the blacklist flags
  and another for a hang forever in bnx2i"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: Use 'blist_flags_t' for scsi_devinfo flags
  scsi: bnx2fc: Fix hung task messages when a cleanup response is not received during abort

6 years agoMerge tag 'sound-fix-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Fri, 24 Nov 2017 07:09:41 +0000 (21:09 -1000)]
Merge tag 'sound-fix-4.15-rc1' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "All commits found here are small fixes for regression or stable:

   - PCM timestamp behavior fix that could be seen as a regression

   - Remove spurious WARN_ON() from ALSA timer 32bit compat ioctl

   - HD-audio HDMI/DP channel mapping fix for 32bit archs

   - Fix the previous fix for HD-audio initialization code

   - More hardening USB-audio against malicious USB descriptors

   - HD-audio quirks/fixes (Realtek codec, AMD controller)

   - Missing help text for the recent Intel SST kconfig change"

* tag 'sound-fix-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda: Add Raven PCI ID
  ALSA: hda/realtek - Fix ALC700 family no sound issue
  ALSA: hda - Fix yet remaining issue with vmaster 0dB initialization
  ALSA: usb-audio: Add sanity checks in v2 clock parsers
  ALSA: usb-audio: Fix potential zero-division at parsing FU
  ALSA: usb-audio: Fix potential out-of-bound access at parsing SU
  ALSA: usb-audio: Add sanity checks to FE parser
  ALSA: timer: Remove kernel warning at compat ioctl error paths
  ALSA: pcm: update tstamp only if audio_tstamp changed
  ALSA: hda/realtek: Add headset mic support for Intel NUC Skull Canyon
  ALSA: hda: Fix too short HDMI/DP chmap reporting
  ALSA: usb-audio: uac1: Invalidate ctl on interrupt
  ALSA: hda/realtek - Fix ALC275 no sound issue
  ASoC: Intel: Add help text for SND_SOC_INTEL_SST_TOPLEVEL

6 years agoMerge tag 'drm-for-v4.15-part2' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 24 Nov 2017 07:04:56 +0000 (21:04 -1000)]
Merge tag 'drm-for-v4.15-part2' of git://people.freedesktop.org/~airlied/linux

Pull more drm updates from Dave Airlie:
 "Fixes/cleanups for rc1, non-desktop flags for VR

   - remove the MSM dt-bindings file Rob managed to push in the previous
     pull.

   - add a property/edid quirk to denote HMD devices, I had these
     hanging around for a few weeks and Keith had done some work on
     them, they are fairly self contained and small, and only affect
     people using HTC Vive VR headsets so far.

   - amdgpu, tegra, tilcdc, fsl fixes

   - some imx-drm cleanups I missed, these seemed pretty small, and no
     reason to hold off.

  I have one TTM regression fix (fixes bochs-vga in qemu) sitting
  locally awaiting review I'll probably send that in a separate pull
  request tomorrow"

* tag 'drm-for-v4.15-part2' of git://people.freedesktop.org/~airlied/linux: (33 commits)
  dt-bindings: remove file that was added accidentally
  drm/edid: quirk HTC vive headset as non-desktop. [v2]
  drm/fb: add support for not enabling fbcon on non-desktop displays [v2]
  drm: add connector info/property for non-desktop displays [v2]
  drm/amdgpu: fix rmmod KCQ disable failed error
  drm/amdgpu: fix kernel hang when starting VNC server
  drm/amdgpu: don't skip attributes when powerplay is enabled
  drm/amd/pp: fix typecast error in powerplay.
  drm/tilcdc: Remove obsolete "ti,tilcdc,slave" dts binding support
  drm/tegra: sor: Reimplement pad clock
  Revert "drm/radeon: dont switch vt on suspend"
  drm/amd/amdgpu: fix over-bound accessing in amdgpu_cs_wait_any_fence
  drm/amd/powerplay: fix unfreeze level smc message for smu7
  drm/amdgpu:fix memleak
  drm/amdgpu:fix memleak in takedown
  drm/amd/pp: fix dpm randomly failed on Vega10
  drm/amdgpu: set f_mapping on exported DMA-bufs
  drm/amdgpu: Properly allocate VM invalidate eng v2
  drm/fsl-dcu: enable IRQ before drm_atomic_helper_resume()
  drm/fsl-dcu: avoid disabling pixel clock twice on suspend
  ...