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  1. 13 7月, 2016 19 次提交
  3. 08 7月, 2016 3 次提交
    • J
      xen/acpi: allow xen-acpi-processor driver to load on Xen 4.7 · 6f2d9d99
      由 Jan Beulich 提交于 
      As of Xen 4.7 PV CPUID doesn't expose either of CPUID[1].ECX[7] and
CPUID[0x80000007].EDX[7] anymore, causing the driver to fail to load on
both Intel and AMD systems. Doing any kind of hardware capability
checks in the driver as a prerequisite was wrong anyway: With the
hypervisor being in charge, all such checking should be done by it. If
ACPI data gets uploaded despite some missing capability, the hypervisor
is free to ignore part or all of that data.

Ditch the entire check_prereq() function, and do the only valid check
(xen_initial_domain()) in the caller in its place.
Signed-off-by: NJan Beulich <jbeulich@suse.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: NDavid Vrabel <david.vrabel@citrix.com>
      6f2d9d99
    • J
      xenbus: simplify xenbus_dev_request_and_reply() · e5a79475
      由 Jan Beulich 提交于 
      No need to retain a local copy of the full request message, only the
type is really needed.
Signed-off-by: NJan Beulich <jbeulich@suse.com>
Signed-off-by: NDavid Vrabel <david.vrabel@citrix.com>
      e5a79475
    • J
      xenbus: don't bail early from xenbus_dev_request_and_reply() · 7469be95
      由 Jan Beulich 提交于 
      xenbus_dev_request_and_reply() needs to track whether a transaction is
open.  For XS_TRANSACTION_START messages it calls transaction_start()
and for XS_TRANSACTION_END messages it calls transaction_end().

If sending an XS_TRANSACTION_START message fails or responds with an
an error, the transaction is not open and transaction_end() must be
called.

If sending an XS_TRANSACTION_END message fails, the transaction is
still open, but if an error response is returned the transaction is
closed.

Commit 027bd7e8 ("xen/xenbus: Avoid synchronous wait on XenBus
stalling shutdown/restart") introduced a regression where failed
XS_TRANSACTION_START messages were leaving the transaction open.  This
can cause problems with suspend (and migration) as all transactions
must be closed before suspending.

It appears that the problematic change was added accidentally, so just
remove it.
Signed-off-by: NJan Beulich <jbeulich@suse.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: NDavid Vrabel <david.vrabel@citrix.com>
      7469be95
  5. 07 7月, 2016 7 次提交
  7. 06 7月, 2016 10 次提交
    • L
      ACPI / debugger: Fix regression introduced by IS_ERR_VALUE() removal · 7e3fd813
      由 Lv Zheng 提交于 
      The FIFO unlocking mechanism in acpi_dbg has been broken by the
following commit:

  Commit: 287980e4
  Subject: remove lots of IS_ERR_VALUE abuses

It converted !IS_ERR_VALUE(ret) into !ret which was not entirely
correct. Fix the regression by taking ret > 0 into account too as
appropriate.

Fixes: 287980e4 (remove lots of IS_ERR_VALUE abuses)
Signed-off-by: NLv Zheng <lv.zheng@intel.com>
[ rjw: Simplifications, changelog & subject massage ]
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
      7e3fd813
    • D
      platform/chrome: cros_ec_dev - double fetch bug in ioctl · 096cdc6f
      由 Dan Carpenter 提交于 
      We verify "u_cmd.outsize" and "u_cmd.insize" but we need to make sure
that those values have not changed between the two copy_from_user()
calls.  Otherwise it could lead to a buffer overflow.

Additionally, cros_ec_cmd_xfer() can set s_cmd->insize to a lower value.
We should use the new smaller value so we don't copy too much data to
the user.
Reported-by: NPengfei Wang <wpengfeinudt@gmail.com>
Fixes: a8411784 ('mfd: cros_ec: Use a zero-length array for command data')
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: NKees Cook <keescook@chromium.org>
Tested-by: NGwendal Grignou <gwendal@chromium.org>
Cc: <stable@vger.kernel.org> # v4.2+
Signed-off-by: NOlof Johansson <olof@lixom.net>
      096cdc6f
    • B
      drm/nouveau/disp/sor/gf119: select correct sor when poking training pattern · 21721504
      由 Ben Skeggs 提交于 
      Fixes a regression caused by a stupid thinko from "disp/sor/gf119: both
links use the same training register".
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
Cc: stable@vger.kernel.org
      21721504
    • L
      ACPICA: Namespace: Fix namespace/interpreter lock ordering · 45209046
      由 Lv Zheng 提交于 
      There is a lock order issue in acpi_load_tables(). The namespace lock
is held before holding the interpreter lock.

With ACPI_MUTEX_DEBUG enabled in the kernel, this is printed to the
log during boot:

  [    0.885699] ACPI Error: Invalid acquire order: Thread 405884224 owns [ACPI_MTX_Namespace], wants [ACPI_MTX_Interpreter] (20160422/utmutex-263)
  [    0.885881] ACPI Error: Could not acquire AML Interpreter mutex (20160422/exutils-95)
  [    0.893846] ACPI Error: Mutex [0x0] is not acquired, cannot release (20160422/utmutex-326)
  [    0.894019] ACPI Error: Could not release AML Interpreter mutex (20160422/exutils-133)

The issue has been introduced by the following commit:

  Commit: 2f38b1b1
  ACPICA Commit: bfe03ffcde8ed56a7eae38ea0b188aeb12f9c52e
  Subject: ACPICA: Namespace: Fix a regression that MLC support triggers
           dead lock in dynamic table loading

Which fixed a deadlock issue for acpi_ns_load_table() in
acpi_ex_add_table() but didn't take care of the lock order in
acpi_ns_load_table() correctly.

Originally (before the above commit), ACPICA used the
namespace/interpreter locks in the following 2 key code
paths:

 1. Table loading:
 acpi_ns_load_table
	L(Namespace)
		acpi_ns_parse_table
			acpi_ns_one_complete_parse
	U(Namespace)
 2. Object evaluation:
 acpi_ns_evaluate
	L(Interpreter)
	acpi_ps_execute_method
		U(Interpreter)
		acpi_ns_load_table
			L(Namespace)
			U(Namespace)
		acpi_ev_initialize_region
			L(Namespace)
			U(Namespace)
		address_space.setup
			L(Namespace)
			U(Namespace)
		address_space.handler
			L(Namespace)
			U(Namespace)
		acpi_os_wait_semaphore
		acpi_os_acquire_mutex
		acpi_os_sleep
		L(Interpreter)
	U(Interpreter)

During runtime, while acpi_ns_evaluate is called, the lock order is
always Interpreter -> Namespace.

In turn, the problematic commit acquires the locks in the following
order:

 3. Table loading:
 acpi_ns_load_table
	L(Namespace)
		acpi_ns_parse_table
		L(Interpreter)
			acpi_ns_one_complete_parse
		U(Interpreter)
	U(Namespace)

To fix the lock order issue, move the interpreter lock to
acpi_ns_load_table() to ensure the lock order correctness:

 4. Table loading:
 acpi_ns_load_table
	L(Interpreter)
	L(Namespace)
		acpi_ns_parse_table
			acpi_ns_one_complete_parse
	U(Namespace)
	U(Interpreter)

However, this doesn't fix the current design issues related to the
namespace lock. For example, we can notice that in acpi_ns_evaluate(),
outside of acpi_ns_load_table(), the namespace objects may be created
by the named object creation control methods. And the creation of
the method-owned namespace objects are not locked by the namespace
lock. This patch doesn't try to fix such kind of existing issues.

Fixes: 2f38b1b1 (ACPICA: Namespace: Fix a regression that MLC support triggers dead lock in dynamic table loading)
Signed-off-by: NLv Zheng <lv.zheng@intel.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
      45209046
    • B
      qla2xxx: Fix NULL pointer deref in QLA interrupt · 262e2bfd
      由 Bruno Prémont 提交于 
      In qla24xx_process_response_queue() rsp->msix->cpuid may trigger NULL
pointer dereference when rsp->msix is NULL:

[    5.622457] NULL pointer dereference at 0000000000000050
[    5.622457] IP: [<ffffffff8155e614>] qla24xx_process_response_queue+0x44/0x4b0
[    5.622457] PGD 0
[    5.622457] Oops: 0000 [#1] SMP
[    5.622457] Modules linked in:
[    5.622457] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 4.6.3-x86_64 #1
[    5.622457] Hardware name: HP ProLiant DL360 G5, BIOS P58 05/02/2011
[    5.622457] task: ffff8801a88f3740 ti: ffff8801a8954000 task.ti: ffff8801a8954000
[    5.622457] RIP: 0010:[<ffffffff8155e614>]  [<ffffffff8155e614>] qla24xx_process_response_queue+0x44/0x4b0
[    5.622457] RSP: 0000:ffff8801afb03de8  EFLAGS: 00010002
[    5.622457] RAX: 0000000000000000 RBX: 0000000000000032 RCX: 00000000ffffffff
[    5.622457] RDX: 0000000000000002 RSI: ffff8801a79bf8c8 RDI: ffff8800c8f7e7c0
[    5.622457] RBP: ffff8801afb03e68 R08: 0000000000000000 R09: 0000000000000000
[    5.622457] R10: 00000000ffff8c47 R11: 0000000000000002 R12: ffff8801a79bf8c8
[    5.622457] R13: ffff8800c8f7e7c0 R14: ffff8800c8f60000 R15: 0000000000018013
[    5.622457] FS:  0000000000000000(0000) GS:ffff8801afb00000(0000) knlGS:0000000000000000
[    5.622457] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    5.622457] CR2: 0000000000000050 CR3: 0000000001e07000 CR4: 00000000000006e0
[    5.622457] Stack:
[    5.622457]  ffff8801afb03e30 ffffffff810c0f2d 0000000000000086 0000000000000002
[    5.622457]  ffff8801afb03e28 ffffffff816570e1 ffff8800c8994628 0000000000000002
[    5.622457]  ffff8801afb03e60 ffffffff816772d4 b47c472ad6955e68 0000000000000032
[    5.622457] Call Trace:
[    5.622457]  <IRQ>
[    5.622457]  [<ffffffff810c0f2d>] ? __wake_up_common+0x4d/0x80
[    5.622457]  [<ffffffff816570e1>] ? usb_hcd_resume_root_hub+0x51/0x60
[    5.622457]  [<ffffffff816772d4>] ? uhci_hub_status_data+0x64/0x240
[    5.622457]  [<ffffffff81560d00>] qla24xx_intr_handler+0xf0/0x2e0
[    5.622457]  [<ffffffff810d569e>] ? get_next_timer_interrupt+0xce/0x200
[    5.622457]  [<ffffffff810c89b4>] handle_irq_event_percpu+0x64/0x100
[    5.622457]  [<ffffffff810c8a77>] handle_irq_event+0x27/0x50
[    5.622457]  [<ffffffff810cb965>] handle_edge_irq+0x65/0x140
[    5.622457]  [<ffffffff8101a498>] handle_irq+0x18/0x30
[    5.622457]  [<ffffffff8101a276>] do_IRQ+0x46/0xd0
[    5.622457]  [<ffffffff817f8fff>] common_interrupt+0x7f/0x7f
[    5.622457]  <EOI>
[    5.622457]  [<ffffffff81020d38>] ? mwait_idle+0x68/0x80
[    5.622457]  [<ffffffff8102114a>] arch_cpu_idle+0xa/0x10
[    5.622457]  [<ffffffff810c1b97>] default_idle_call+0x27/0x30
[    5.622457]  [<ffffffff810c1d3b>] cpu_startup_entry+0x19b/0x230
[    5.622457]  [<ffffffff810324c6>] start_secondary+0x136/0x140
[    5.622457] Code: 00 00 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 48 8b 47 58 a8 02 0f 84 c5 00 00 00 48 8b 46 50 49 89 f4 65 8b 15 34 bb aa 7e <39> 50 50 74 11 89 50 50 48 8b 46 50 8b 40 50 41 89 86 60 8b 00
[    5.622457] RIP  [<ffffffff8155e614>] qla24xx_process_response_queue+0x44/0x4b0
[    5.622457]  RSP <ffff8801afb03de8>
[    5.622457] CR2: 0000000000000050
[    5.622457] ---[ end trace fa2b19c25106d42b ]---
[    5.622457] Kernel panic - not syncing: Fatal exception in interrupt

The affected code was introduced by commit cdb898c5
(qla2xxx: Add irq affinity notification).

Only dereference rsp->msix when it has been set so the machine can boot
fine. Possibly rsp->msix is unset because:
[    3.479679] qla2xxx [0000:00:00.0]-0005: : QLogic Fibre Channel HBA Driver: 8.07.00.33-k.
[    3.481839] qla2xxx [0000:13:00.0]-001d: : Found an ISP2432 irq 17 iobase 0xffffc90000038000.
[    3.484081] qla2xxx [0000:13:00.0]-0035:0: MSI-X; Unsupported ISP2432 (0x2, 0x3).
[    3.485804] qla2xxx [0000:13:00.0]-0037:0: Falling back-to MSI mode -258.
[    3.890145] scsi host0: qla2xxx
[    3.891956] qla2xxx [0000:13:00.0]-00fb:0: QLogic QLE2460 - PCI-Express Single Channel 4Gb Fibre Channel HBA.
[    3.894207] qla2xxx [0000:13:00.0]-00fc:0: ISP2432: PCIe (2.5GT/s x4) @ 0000:13:00.0 hdma+ host#=0 fw=7.03.00 (9496).
[    5.714774] qla2xxx [0000:13:00.0]-500a:0: LOOP UP detected (4 Gbps).
Signed-off-by: NBruno Prémont <bonbons@linux-vserver.org>
Acked-by: NQuinn Tran <quinn.tran@qlogic.com>
CC: <stable@vger.kernel.org>  # 4.5+
Fixes: cdb898c5Signed-off-by: NJames Bottomley <jejb@linux.vnet.ibm.com>
      262e2bfd
    • G
      cxgb4: update latest firmware version supported · f5d65161
      由 Ganesh Goudar 提交于 
      Change t4fw_version.h to update latest firmware version number
Signed-off-by: NGanesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      f5d65161
    • O
      net/mlx5: Avoid setting unused var when modifying vport node GUID · eae033c1
      由 Or Gerlitz 提交于 
      GCC complains on unused-but-set-variable, clean this up.

Fixes: 23898c76 ('net/mlx5: E-Switch, Modify node guid on vf set MAC')
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Acked-by: NSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      eae033c1
    • A
      bonding: fix enslavement slave link notifications · a30b0168
      由 Aviv Heller 提交于 
      Currently, link notifications are not sent by
bond_set_slave_link_state() upon enslavement if
the slave is enslaved when up.

This happens because slave->link default init value
is 0, which is the same as BOND_LINK_UP, resulting
in bond_set_slave_link_state() ignoring this transition.

This patch sets the default value of slave->link to
BOND_LINK_NOCHANGE, assuring it will count as a state
transition and thus trigger notification logic.
Signed-off-by: NAviv Heller <avivh@mellanox.com>
Reviewed-by: NJiri Pirko <jiri@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      a30b0168
    • H
      r8152: fix runtime function for RTL8152 · 2609af19
      由 hayeswang 提交于 
      The RTL8152 doesn't have U1U2 and U2P3 features, so use different
runtime functions for RTL812 and RTL8153 by adding autosuspend_en()
to rtl_ops.
Signed-off-by: NHayes Wang <hayeswang@realtek.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      2609af19
    • L
      Revert "gpio: gpiolib-of: Allow compile testing" · 92c74bce
      由 Linus Walleij 提交于 
      This reverts commit 1e4a8064.

This creates more problems than it solves right now. Compile
testing needs to go in with patches fixing the problems it
uncovers.
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
      92c74bce
  9. 05 7月, 2016 1 次提交
    • P
      irqchip/mips-gic: Match IPI IRQ domain by bus token only · 547aefc4
      由 Paul Burton 提交于 
      Commit fbde2d7d ("MIPS: Add generic SMP IPI support") introduced
code which calls irq_find_matching_host with a NULL node parameter in
order to discover IPI IRQ domains which are not associated with the DT
root node's interrupt parent. This suggests that implementations of IPI
IRQ domains should effectively ignore the node parameter if it is NULL
and search purely based upon the bus token. Commit 2af70a96
("irqchip/mips-gic: Add a IPI hierarchy domain") did not do this when
implementing the GIC IPI IRQ domain, and on MIPS Boston boards this
leads to no IPI domain being discovered and a NULL pointer dereference
when attempting to send an IPI:

  CPU 0 Unable to handle kernel paging request at virtual address 0000000000000040, epc == ffffffff8016e70c, ra == ffffffff8010ff5c
  Oops[#1]:
  CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.7.0-rc6-00223-gad0d1b6 #945
  task: a8000000ff066fc0 ti: a8000000ff068000 task.ti: a8000000ff068000
  $ 0   : 0000000000000000 0000000000000001 ffffffff80730000 0000000000000003
  $ 4   : 0000000000000000 ffffffff8057e5b0 a800000001e3ee00 0000000000000000
  $ 8   : 0000000000000000 0000000000000023 0000000000000001 0000000000000001
  $12   : 0000000000000000 ffffffff803323d0 0000000000000000 0000000000000000
  $16   : 0000000000000000 0000000000000000 0000000000000001 ffffffff801108fc
  $20   : 0000000000000000 ffffffff8057e5b0 0000000000000001 0000000000000000
  $24   : 0000000000000000 ffffffff8012de28
  $28   : a8000000ff068000 a8000000ff06fbc0 0000000000000000 ffffffff8010ff5c
  Hi    : ffffffff8014c174
  Lo    : a800000001e1e140
  epc   : ffffffff8016e70c __ipi_send_mask+0x24/0x11c
  ra    : ffffffff8010ff5c mips_smp_send_ipi_mask+0x68/0x178
  Status: 140084e2        KX SX UX KERNEL EXL
  Cause : 00800008 (ExcCode 02)
  BadVA : 0000000000000040
  PrId  : 0001a920 (MIPS I6400)
  Process swapper/0 (pid: 1, threadinfo=a8000000ff068000, task=a8000000ff066fc0, tls=0000000000000000)
  Stack : 0000000000000000 0000000000000000 0000000000000001 ffffffff801108fc
            0000000000000000 ffffffff8057e5b0 0000000000000001 ffffffff8010ff5c
            0000000000000001 0000000000000020 0000000000000000 0000000000000000
            0000000000000000 ffffffff801108fc 0000000000000000 0000000000000001
            0000000000000001 0000000000000000 0000000000000000 ffffffff801865e8
            a8000000ff0c7500 a8000000ff06fc90 0000000000000001 0000000000000002
            ffffffff801108fc ffffffff801868b8 0000000000000000 ffffffff801108fc
            0000000000000000 0000000000000003 ffffffff8068c700 0000000000000001
            ffffffff80730000 0000000000000001 a8000000ff00a290 ffffffff80110c50
            0000000000000003 a800000001e48308 0000000000000003 0000000000000008
            ...
  Call Trace:
  [<ffffffff8016e70c>] __ipi_send_mask+0x24/0x11c
  [<ffffffff8010ff5c>] mips_smp_send_ipi_mask+0x68/0x178
  [<ffffffff801865e8>] generic_exec_single+0x150/0x170
  [<ffffffff801868b8>] smp_call_function_single+0x108/0x160
  [<ffffffff80110c50>] cps_boot_secondary+0x328/0x394
  [<ffffffff80110534>] __cpu_up+0x38/0x90
  [<ffffffff8012de4c>] bringup_cpu+0x24/0xac
  [<ffffffff8012df40>] cpuhp_up_callbacks+0x58/0xdc
  [<ffffffff8012e648>] cpu_up+0x118/0x18c
  [<ffffffff806dc158>] smp_init+0xbc/0xe8
  [<ffffffff806d4c18>] kernel_init_freeable+0xa0/0x228
  [<ffffffff8056c908>] kernel_init+0x10/0xf0
  [<ffffffff80105098>] ret_from_kernel_thread+0x14/0x1c

Fix this by allowing the GIC IPI IRQ domain to match purely based upon
the bus token if the node provided is NULL.

Fixes: 2af70a96 ("irqchip/mips-gic: Add a IPI hierarchy domain")
Signed-off-by: NPaul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Qais Yousef <qsyousef@gmail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20160705132600.27730-2-paul.burton@imgtec.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>
      547aefc4