Commit Graph

662320 Commits

Author SHA1 Message Date
Michael Davidson fdb2726f4e crypto, x86: aesni - fix token pasting for clang
aes_ctrby8_avx-x86_64.S uses the C preprocessor for token pasting
of character sequences that are not valid preprocessor tokens.
While this is allowed when preprocessing assembler files it exposes
an incompatibilty between the clang and gcc preprocessors where
clang does not strip leading white space from macro parameters,
leading to the CONCAT(%xmm, i) macro expansion on line 96 resulting
in a token with a space character embedded in it.

While this could be resolved by deleting the offending space character,
the assembler is perfectly capable of doing the token pasting correctly
for itself so we can just get rid of the preprocessor macros.

Signed-off-by: Michael Davidson <md@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-03-24 22:02:55 +08:00
Gary R Hook 36cf515b9b crypto: ccp - Enable support for AES GCM on v5 CCPs
A version 5 device provides the primitive commands
required for AES GCM. This patch adds support for
en/decryption.

Signed-off-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-03-24 22:02:55 +08:00
Gary R Hook 990672d485 crypto: ccp - Enable 3DES function on v5 CCPs
Wire up support for Triple DES in ECB mode.

Signed-off-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-03-24 22:02:55 +08:00
Gary R Hook ccebcf3f22 crypto: ccp - Add SHA-2 384- and 512-bit support
Incorporate 384-bit and 512-bit hashing for a version 5 CCP
device

Signed-off-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-03-24 22:02:54 +08:00
Daniel Axtens 146c8688d9 crypto: powerpc - Stress test for vpmsum implementations
vpmsum implementations often don't kick in for short test vectors.
This is a simple test module that does a configurable number of
random tests, each up to 64kB and each with random offsets.

Both CRC-T10DIF and CRC32C are tested.

Cc: Anton Blanchard <anton@samba.org>
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-03-24 22:02:54 +08:00
Daniel Axtens b01df1c16c crypto: powerpc - Add CRC-T10DIF acceleration
T10DIF is a CRC16 used heavily in NVMe.

It turns out we can accelerate it with a CRC32 library and a few
little tricks.

Provide the accelerator based the refactored CRC32 code.

Cc: Anton Blanchard <anton@samba.org>
Thanks-to: Hong Bo Peng <penghb@cn.ibm.com>
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-03-24 22:02:53 +08:00
Daniel Axtens 08c7dd1bd4 crypto: powerpc - Re-enable non-REFLECTed CRCs
When CRC32c was included in the kernel, Anton ripped out
the #ifdefs around reflected polynomials, because CRC32c
is always reflected. However, not all CRCs use reflection
so we'd like to make it optional.

Restore the REFLECT parts from Anton's original CRC32
implementation (https://github.com/antonblanchard/crc32-vpmsum)

That implementation is available under GPLv2+, so we're OK
from a licensing point of view:
https://github.com/antonblanchard/crc32-vpmsum/blob/master/LICENSE.TXT

As CRC32c requires REFLECT, add that #define.

Cc: Anton Blanchard <anton@samba.org>
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-03-24 22:02:53 +08:00
Daniel Axtens de696a2643 crypto: powerpc - Factor out the core CRC vpmsum algorithm
The core nuts and bolts of the crc32c vpmsum algorithm will
also work for a number of other CRC algorithms with different
polynomials. Factor out the function into a new asm file.

To handle multiple users of the function, a user simply
provides constants, defines the name of their CRC function,
and then #includes the core algorithm file.

Cc: Anton Blanchard <anton@samba.org>
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-03-24 22:02:52 +08:00
Herbert Xu 2e6d603e51 Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
Merging 4.11-rc3 to pick up md5 removal from /dev/random.
2017-03-24 21:58:58 +08:00
Linus Torvalds 97da3854c5 Linux 4.11-rc3 2017-03-19 19:09:39 -07:00
Linus Torvalds 452b94b8c8 mm/swap: don't BUG_ON() due to uninitialized swap slot cache
This BUG_ON() triggered for me once at shutdown, and I don't see a
reason for the check.  The code correctly checks whether the swap slot
cache is usable or not, so an uninitialized swap slot cache is not
actually problematic afaik.

I've temporarily just switched the BUG_ON() to a WARN_ON_ONCE(), since
I'm not sure why that seemingly pointless check was there.  I suspect
the real fix is to just remove it entirely, but for now we'll warn about
it but not bring the machine down.

Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-03-19 19:00:47 -07:00
Linus Torvalds a07a6e4121 powerpc fixes for 4.11 #5
- Wire up statx() syscall
  - Don't print a warning on memory hotplug when HPT resizing isn't available
 
 Thanks to:
   David Gibson, Chandan Rajendra.
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Merge tag 'powerpc-4.11-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull more powerpc fixes from Michael Ellerman:
 "A couple of minor powerpc fixes for 4.11:

   - wire up statx() syscall

   - don't print a warning on memory hotplug when HPT resizing isn't
     available

  Thanks to: David Gibson, Chandan Rajendra"

* tag 'powerpc-4.11-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/pseries: Don't give a warning when HPT resizing isn't available
  powerpc: Wire up statx() syscall
2017-03-19 18:49:28 -07:00
Linus Torvalds 4571bc5abf Merge branch 'parisc-4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller:

 - Mikulas Patocka added support for R_PARISC_SECREL32 relocations in
   modules with CONFIG_MODVERSIONS.

 - Dave Anglin optimized the cache flushing for vmap ranges.

 - Arvind Yadav provided a fix for a potential NULL pointer dereference
   in the parisc perf code (and some code cleanups).

 - I wired up the new statx system call, fixed some compiler warnings
   with the access_ok() macro and fixed shutdown code to really halt a
   system at shutdown instead of crashing & rebooting.

* 'parisc-4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Fix system shutdown halt
  parisc: perf: Fix potential NULL pointer dereference
  parisc: Avoid compiler warnings with access_ok()
  parisc: Wire up statx system call
  parisc: Optimize flush_kernel_vmap_range and invalidate_kernel_vmap_range
  parisc: support R_PARISC_SECREL32 relocation in modules
2017-03-19 18:11:13 -07:00
Linus Torvalds 8aa3417255 Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Pull SCSI target fixes from Nicholas Bellinger:
 "The bulk of the changes are in qla2xxx target driver code to address
  various issues found during Cavium/QLogic's internal testing (stable
  CC's included), along with a few other stability and smaller
  miscellaneous improvements.

  There are also a couple of different patch sets from Mike Christie,
  which have been a result of his work to use target-core ALUA logic
  together with tcm-user backend driver.

  Finally, a patch to address some long standing issues with
  pass-through SCSI export of TYPE_TAPE + TYPE_MEDIUM_CHANGER devices,
  which will make folks using physical (or virtual) magnetic tape happy"

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (28 commits)
  qla2xxx: Update driver version to 9.00.00.00-k
  qla2xxx: Fix delayed response to command for loop mode/direct connect.
  qla2xxx: Change scsi host lookup method.
  qla2xxx: Add DebugFS node to display Port Database
  qla2xxx: Use IOCB interface to submit non-critical MBX.
  qla2xxx: Add async new target notification
  qla2xxx: Export DIF stats via debugfs
  qla2xxx: Improve T10-DIF/PI handling in driver.
  qla2xxx: Allow relogin to proceed if remote login did not finish
  qla2xxx: Fix sess_lock & hardware_lock lock order problem.
  qla2xxx: Fix inadequate lock protection for ABTS.
  qla2xxx: Fix request queue corruption.
  qla2xxx: Fix memory leak for abts processing
  qla2xxx: Allow vref count to timeout on vport delete.
  tcmu: Convert cmd_time_out into backend device attribute
  tcmu: make cmd timeout configurable
  tcmu: add helper to check if dev was configured
  target: fix race during implicit transition work flushes
  target: allow userspace to set state to transitioning
  target: fix ALUA transition timeout handling
  ...
2017-03-19 18:06:31 -07:00
Linus Torvalds 1b8df61908 Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull device-dax fixes from Dan Williams:
 "The device-dax driver was not being careful to handle falling back to
  smaller fault-granularity sizes.

  The driver already fails fault attempts that are smaller than the
  device's alignment, but it also needs to handle the cases where a
  larger page mapping could be established. For simplicity of the
  immediate fix the implementation just signals VM_FAULT_FALLBACK until
  fault-size == device-alignment.

  One fix is for -stable to address pmd-to-pte fallback from the
  original implementation, another fix is for the new (introduced in
  4.11-rc1) pud-to-pmd regression, and a typo fix comes along for the
  ride.

  These have received a build success notification from the kbuild
  robot"

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  device-dax: fix debug output typo
  device-dax: fix pud fault fallback handling
  device-dax: fix pmd/pte fault fallback handling
2017-03-19 15:45:02 -07:00
Himanshu Madhani 6c611d18f3 qla2xxx: Update driver version to 9.00.00.00-k
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:38 -07:00
Quinn Tran ec7193e260 qla2xxx: Fix delayed response to command for loop mode/direct connect.
Current driver wait for FW to be in the ready state before
processing in-coming commands. For Arbitrated Loop or
Point-to- Point (not switch), FW Ready state can take a while.
FW will transition to ready state after all Nports have been
logged in. In the mean time, certain initiators have completed
the login and starts IO. Driver needs to start processing all
queues if FW is already started.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:38 -07:00
Quinn Tran 482c9dc792 qla2xxx: Change scsi host lookup method.
For target mode, when new scsi command arrive, driver first performs
a look up of the SCSI Host. The current look up method is based on
the ALPA portion of the NPort ID. For Cisco switch, the ALPA can
not be used as the index. Instead, the new search method is based
on the full value of the Nport_ID via btree lib.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:37 -07:00
Himanshu Madhani c423437e3f qla2xxx: Add DebugFS node to display Port Database
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:37 -07:00
Quinn Tran 15f30a5752 qla2xxx: Use IOCB interface to submit non-critical MBX.
The Mailbox interface is currently over subscribed. We like
to reserve the Mailbox interface for the chip managment and
link initialization. Any non essential Mailbox command will
be routed through the IOCB interface. The IOCB interface is
able to absorb more commands.

Following commands are being routed through IOCB interface

- Get ID List (007Ch)
- Get Port DB (0064h)
- Get Link Priv Stats (006Dh)

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:37 -07:00
Quinn Tran f1443eebca qla2xxx: Add async new target notification
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:37 -07:00
Anil Gurumurthy 54b9993c8c qla2xxx: Export DIF stats via debugfs
Signed-off-by: Anil Gurumurthy <anil.gurumurthy@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:36 -07:00
Quinn Tran be25152c0d qla2xxx: Improve T10-DIF/PI handling in driver.
Add routines to support T10 DIF tag.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Anil Gurumurthy <anil.gurumurthy@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:36 -07:00
Quinn Tran 5b33469a05 qla2xxx: Allow relogin to proceed if remote login did not finish
If the remote port have started the login process, then the
PLOGI and PRLI should be back to back. Driver will allow
the remote port to complete the process. For the case where
the remote port decide to back off from sending PRLI, this
local port sets an expiration timer for the PRLI. Once the
expiration time passes, the relogin retry logic is allowed
to go through and perform login with the remote port.

Signed-off-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:36 -07:00
Quinn Tran f159b3c7cd qla2xxx: Fix sess_lock & hardware_lock lock order problem.
The main lock that needs to be held for CMD or TMR submission
to upper layer is the sess_lock. The sess_lock is used to
serialize cmd submission and session deletion. The addition
of hardware_lock being held is not necessary. This patch removes
hardware_lock dependency from CMD/TMR submission.

Use hardware_lock only for error response in this case.

Path1
       CPU0                    CPU1
       ----                    ----
  lock(&(&ha->tgt.sess_lock)->rlock);
                               lock(&(&ha->hardware_lock)->rlock);
                               lock(&(&ha->tgt.sess_lock)->rlock);
  lock(&(&ha->hardware_lock)->rlock);

Path2/deadlock
*** DEADLOCK ***
Call Trace:
dump_stack+0x85/0xc2
print_circular_bug+0x1e3/0x250
__lock_acquire+0x1425/0x1620
lock_acquire+0xbf/0x210
_raw_spin_lock_irqsave+0x53/0x70
qlt_sess_work_fn+0x21d/0x480 [qla2xxx]
process_one_work+0x1f4/0x6e0

Cc: <stable@vger.kernel.org>
Cc: Bart Van Assche <Bart.VanAssche@sandisk.com>
Reported-by: Bart Van Assche <Bart.VanAssche@sandisk.com>
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:08 -07:00
Quinn Tran 8f6fc8d4e7 qla2xxx: Fix inadequate lock protection for ABTS.
Normally, ABTS is sent to Target Core as Task MGMT command.
In the case of error, qla2xxx needs to send response, hardware_lock
is required to prevent request queue corruption.

Cc: <stable@vger.kernel.org>
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:08 -07:00
Quinn Tran 8b666809e1 qla2xxx: Fix request queue corruption.
When FW notify driver or driver detects low FW resource,
driver tries to send out Busy SCSI Status to tell Initiator
side to back off. During the send process, the lock was not held.

Cc: <stable@vger.kernel.org>
Signed-off-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:08 -07:00
Quinn Tran ae940f2c47 qla2xxx: Fix memory leak for abts processing
Cc: <stable@vger.kernel.org>
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:28:08 -07:00
Joe Carnuccio c4a9b538ab qla2xxx: Allow vref count to timeout on vport delete.
Cc: <stable@vger.kernel.org>
Signed-off-by: Joe Carnuccio <joe.carnuccio@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 17:27:56 -07:00
Nicholas Bellinger 7d7a743543 tcmu: Convert cmd_time_out into backend device attribute
Instead of putting cmd_time_out under ../target/core/user_0/foo/control,
which has historically been used by parameters needed for initial
backend device configuration, go ahead and move cmd_time_out into
a backend device attribute.

In order to do this, tcmu_module_init() has been updated to create
a local struct configfs_attribute **tcmu_attrs, that is based upon
the existing passthrough_attrib_attrs along with the new cmd_time_out
attribute.  Once **tcm_attrs has been setup, go ahead and point
it at tcmu_ops->tb_dev_attrib_attrs so it's picked up by target-core.

Also following MNC's previous change, ->cmd_time_out is stored in
milliseconds but exposed via configfs in seconds.  Also, note this
patch restricts the modification of ->cmd_time_out to before +
after the TCMU device has been configured, but not while it has
active fabric exports.

Cc: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 16:32:30 -07:00
Mike Christie af980e46a2 tcmu: make cmd timeout configurable
A single daemon could implement multiple types of devices
using multuple types of real devices that may not support
restarting from crashes and/or handling tcmu timeouts. This
makes the cmd timeout configurable, so handlers that do not
support it can turn if off for now.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 16:32:27 -07:00
Mike Christie 972c7f1679 tcmu: add helper to check if dev was configured
This adds a helper to check if the dev was configured. It
will be used in the next patch to prevent updates to some
config settings after the device has been setup.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 16:32:19 -07:00
Linus Torvalds 93afaa4513 OpenRISC fixes for 4.11
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Merge tag 'openrisc-for-linus' of git://github.com/openrisc/linux

Pull OpenRISC fixes from Stafford Horne:
 "OpenRISC fixes for build issues that were exposed by kbuild robots
  after 4.11 merge. All from allmodconfig builds. This includes:

   - bug in the handling of 8-byte get_user() calls

   - module build failure due to multile missing symbol exports"

* tag 'openrisc-for-linus' of git://github.com/openrisc/linux:
  openrisc: Export symbols needed by modules
  openrisc: fix issue handling 8 byte get_user calls
  openrisc: xchg: fix `computed is not used` warning
2017-03-18 15:50:39 -07:00
Mike Christie 760bf578ed target: fix race during implicit transition work flushes
This fixes the following races:

1. core_alua_do_transition_tg_pt could have read
tg_pt_gp_alua_access_state and gone into this if chunk:

if (!explicit &&
        atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state) ==
           ALUA_ACCESS_STATE_TRANSITION) {

and then core_alua_do_transition_tg_pt_work could update the
state. core_alua_do_transition_tg_pt would then only set
tg_pt_gp_alua_pending_state and the tg_pt_gp_alua_access_state would
not get updated with the second calls state.

2. core_alua_do_transition_tg_pt could be setting
tg_pt_gp_transition_complete while the tg_pt_gp_transition_work
is already completing. core_alua_do_transition_tg_pt then waits on the
completion that will never be called.

To handle these issues, we just call flush_work which will return when
core_alua_do_transition_tg_pt_work has completed so there is no need
to do the complete/wait. And, if core_alua_do_transition_tg_pt_work
was running, instead of trying to sneak in the state change, we just
schedule up another core_alua_do_transition_tg_pt_work call.

Note that this does not handle a possible race where there are multiple
threads call core_alua_do_transition_tg_pt at the same time. I think
we need a mutex in target_tg_pt_gp_alua_access_state_store.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 14:47:29 -07:00
Mike Christie 1ca4d4fa3b target: allow userspace to set state to transitioning
Userspace target_core_user handlers like tcmu-runner may want to set the
ALUA state to transitioning while it does implicit transitions. This
patch allows that state when set from configfs.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 14:47:28 -07:00
Mike Christie d7175373f2 target: fix ALUA transition timeout handling
The implicit transition time tells initiators the min time
to wait before timing out a transition. We currently schedule
the transition to occur in tg_pt_gp_implicit_trans_secs
seconds so there is no room for delays. If
core_alua_do_transition_tg_pt_work->core_alua_update_tpg_primary_metadata
needs to write out info to a remote file, then the initiator can
easily time out the operation.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 14:47:28 -07:00
Mike Christie 207ee84133 target: Use system workqueue for ALUA transitions
If tcmu-runner is processing a STPG and needs to change the kernel's
ALUA state then we cannot use the same work queue for task management
requests and ALUA transitions, because we could deadlock. The problem
occurs when a STPG times out before tcmu-runner is able to
call into target_tg_pt_gp_alua_access_state_store->
core_alua_do_port_transition -> core_alua_do_transition_tg_pt ->
queue_work. In this case, the tmr is on the work queue waiting for
the STPG to complete, but the STPG transition is now queued behind
the waiting tmr.

Note:
This bug will also be fixed by this patch:
http://www.spinics.net/lists/target-devel/msg14560.html
which switches the tmr code to use the system workqueues.

For both, I am not sure if we need a dedicated workqueue since
it is not a performance path and I do not think we need WQ_MEM_RECLAIM
to make forward progress to free up memory like the block layer does.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 14:47:27 -07:00
Mike Christie 0a41457298 target: fail ALUA transitions for pscsi
We do not setup the LU group for pscsi devices, so if you write
a state to alua_access_state that will cause a transition you will
get a NULL pointer dereference.

This patch will fail attempts to try and transition the path
for backend devices that set the TRANSPORT_FLAG_PASSTHROUGH_ALUA
flag.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 14:47:26 -07:00
Mike Christie 530c6891b1 target: allow ALUA setup for some passthrough backends
This patch allows passthrough backends to use the core/base LIO
ALUA setup and state checks, but still handle the execution of
commands.

This will allow the target_core_user module to execute STPG and RTPG
in userspace, and not have to duplicate the ALUA state checks, path
information (needed so we can check if command is executable on
specific paths) and setup (rtslib sets/updates the configfs ALUA
interface like it does for iblock or file).

For STPG, the target_core_user userspace daemon, tcmu-runner will
still execute the STPG, and to update the core/base LIO state it
will use the existing configfs interface. For RTPG, tcmu-runner
will loop over configfs and/or cache the state.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 14:47:25 -07:00
Mike Christie 2579325ca0 tcmu: return on first Opt parse failure
We only were returing failure if the last opt to be parsed failed.
This has a return failure when we first detect a failure.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 14:47:25 -07:00
Mike Christie 3abaa2bfdb tcmu: allow hw_max_sectors greater than 128
tcmu hard codes the hw_max_sectors to 128 which is a litle small.
Userspace uses the max_sectors to report the optimal IO size and
some initiators perform better with larger IOs (open-iscsi seems
to do better with 256 to 512 depending on the test).

(Fix do not display hw max sectors twice - MNC)

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 14:46:52 -07:00
Nicholas Bellinger 9c28ca4ff8 target: Drop pointless tfo->check_stop_free check
All in-tree fabric drivers provide a tfo->check_stop_free(),
so there is no need to do the extra check within existing
transport_cmd_check_stop_to_fabric() code.

Just to be sure, add a check in target_fabric_tf_ops_check()
to notify any out-of-tree drivers that might be missing it.

Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2017-03-18 14:42:50 -07:00
Helge Deller 73580dac76 parisc: Fix system shutdown halt
On those parisc machines which don't provide a software power off
function, the system currently kills the init process at the end of a
shutdown and unexpectedly restarts insteads of halting.
Fix it by adding a loop which will not return.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # 4.9+
2017-03-18 17:27:45 +01:00
Arvind Yadav 74e3f6e63d parisc: perf: Fix potential NULL pointer dereference
Fix potential NULL pointer dereference and clean up
coding style errors (code indent, trailing whitespaces).

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
2017-03-18 17:24:43 +01:00
Linus Torvalds 3e51f893de Merge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull CPU hotplug fix from Thomas Gleixner:
 "A single fix preventing the concurrent execution of the CPU hotplug
  callback install/invocation machinery. Long standing bug caused by a
  massive brain slip of that Gleixner dude, which went unnoticed for
  almost a year"

* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  cpu/hotplug: Serialize callback invocations proper
2017-03-18 08:33:44 -07:00
Linus Torvalds 8d940990f5 Power management fixes for v4.11-rc3
- Fix breakage in the intel_pstate's debugfs interface for PID
    controller tuning (Rafael Wysocki).
 
  - Fix computations related to P-state limits in intel_pstate to
    avoid excessive rounding errors leading to visible inaccuracies
    (Srinivas Pandruvada, Rafael Wysocki).
 
  - Add a missing newline to a message printed by one function in
    the cpufreq core and clean up that function (Rafael Wysocki).
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Merge tag 'pm-4.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix a few more intel_pstate issues and one small issue in the
  cpufreq core.

  Specifics:

   - Fix breakage in the intel_pstate's debugfs interface for PID
     controller tuning (Rafael Wysocki)

   - Fix computations related to P-state limits in intel_pstate to avoid
     excessive rounding errors leading to visible inaccuracies (Srinivas
     Pandruvada, Rafael Wysocki)

   - Add a missing newline to a message printed by one function in the
     cpufreq core and clean up that function (Rafael Wysocki)"

* tag 'pm-4.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: Fix and clean up show_cpuinfo_cur_freq()
  cpufreq: intel_pstate: Avoid percentages in limits-related computations
  cpufreq: intel_pstate: Correct frequency setting in the HWP mode
  cpufreq: intel_pstate: Update pid_params.sample_rate_ns in pid_param_set()
2017-03-17 17:25:14 -07:00
Rafael J. Wysocki 8b766e05d8 Merge branches 'pm-cpufreq-fixes' and 'intel_pstate-fixes'
* pm-cpufreq-fixes:
  cpufreq: Fix and clean up show_cpuinfo_cur_freq()

* intel_pstate-fixes:
  cpufreq: intel_pstate: Avoid percentages in limits-related computations
  cpufreq: intel_pstate: Correct frequency setting in the HWP mode
  cpufreq: intel_pstate: Update pid_params.sample_rate_ns in pid_param_set()
2017-03-18 00:45:09 +01:00
Linus Torvalds 8841b5f0cd NFS client fixes for 4.11
Stable Bugfixes:
 - Fix decrementing nrequests in NFS v4.2 COPY to fix kernel warnings
 - Prevent a double free in async nfs4_exchange_id()
 - Squelch a kbuild sparse complaint for xprtrdma
 
 Other Bugfixes:
 - Fix a typo (NFS_ATTR_FATTR_GROUP_NAME) that causes a memory leak
 - Fix a reference leak that causes kernel warnings
 - Make nfs4_cb_sv_ops static to fix a sparse warning
 - Respect a server's max size in CREATE_SESSION
 - Handle errors from nfs4_pnfs_ds_connect
 - Flexfiles layout shouldn't mark devices as unavailable
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Merge tag 'nfs-for-4.11-2' of git://git.linux-nfs.org/projects/anna/linux-nfs

Pull NFS client fixes from Anna Schumaker:
 "We have a handful of stable fixes to fix kernel warnings and other
  bugs that have been around for a while. We've also found a few other
  reference counting bugs and memory leaks since the initial 4.11 pull.

  Stable Bugfixes:
   - Fix decrementing nrequests in NFS v4.2 COPY to fix kernel warnings
   - Prevent a double free in async nfs4_exchange_id()
   - Squelch a kbuild sparse complaint for xprtrdma

  Other Bugfixes:
   - Fix a typo (NFS_ATTR_FATTR_GROUP_NAME) that causes a memory leak
   - Fix a reference leak that causes kernel warnings
   - Make nfs4_cb_sv_ops static to fix a sparse warning
   - Respect a server's max size in CREATE_SESSION
   - Handle errors from nfs4_pnfs_ds_connect
   - Flexfiles layout shouldn't mark devices as unavailable"

* tag 'nfs-for-4.11-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
  pNFS/flexfiles: never nfs4_mark_deviceid_unavailable
  pNFS: return status from nfs4_pnfs_ds_connect
  NFSv4.1 respect server's max size in CREATE_SESSION
  NFS prevent double free in async nfs4_exchange_id
  nfs: make nfs4_cb_sv_ops static
  xprtrdma: Squelch kbuild sparse complaint
  NFS: fix the fault nrequests decreasing for nfs_inode COPY
  NFSv4: fix a reference leak caused WARNING messages
  nfs4: fix a typo of NFS_ATTR_FATTR_GROUP_NAME
2017-03-17 14:16:22 -07:00
Linus Torvalds eab60d4e5b Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
 "An assorted pile of fixes along with some hardware enablement:

   - a fix for a KASAN / branch profiling related boot failure

   - some more fallout of the PUD rework

   - a fix for the Always Running Timer which is not initialized when
     the TSC frequency is known at boot time (via MSR/CPUID)

   - a resource leak fix for the RDT filesystem

   - another unwinder corner case fixup

   - removal of the warning for duplicate NMI handlers because there are
     legitimate cases where more than one handler can be registered at
     the last level

   - make a function static - found by sparse

   - a set of updates for the Intel MID platform which got delayed due
     to merge ordering constraints. It's hardware enablement for a non
     mainstream platform, so there is no risk"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mpx: Make unnecessarily global function static
  x86/intel_rdt: Put group node in rdtgroup_kn_unlock
  x86/unwind: Fix last frame check for aligned function stacks
  mm, x86: Fix native_pud_clear build error
  x86/kasan: Fix boot with KASAN=y and PROFILE_ANNOTATED_BRANCHES=y
  x86/platform/intel-mid: Add power button support for Merrifield
  x86/platform/intel-mid: Use common power off sequence
  x86/platform: Remove warning message for duplicate NMI handlers
  x86/tsc: Fix ART for TSC_KNOWN_FREQ
  x86/platform/intel-mid: Correct MSI IRQ line for watchdog device
2017-03-17 14:05:03 -07:00
Linus Torvalds ae13373319 Merge branch 'x86-acpi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 acpi fixes from Thomas Gleixner:
 "This update deals with the fallout of the recent work to make
  cpuid/node mappings persistent.

  It turned out that the boot time ACPI based mapping tripped over ACPI
  inconsistencies and caused regressions. It's partially reverted and
  the fragile part replaced by an implementation which makes the mapping
  persistent when a CPU goes online for the first time"

* 'x86-acpi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  acpi/processor: Check for duplicate processor ids at hotplug time
  acpi/processor: Implement DEVICE operator for processor enumeration
  x86/acpi: Restore the order of CPU IDs
  Revert"x86/acpi: Enable MADT APIs to return disabled apicids"
  Revert "x86/acpi: Set persistent cpuid <-> nodeid mapping when booting"
2017-03-17 14:01:40 -07:00