933377 Commits

Author SHA1 Message Date
Ido Schimmel
f3fe412b0a mlxsw: spectrum: Do not rely on machine endianness
The second commit cited below performed a cast of 'u32 buffsize' to
'(u16 *)' when calling mlxsw_sp_port_headroom_8x_adjust():

mlxsw_sp_port_headroom_8x_adjust(mlxsw_sp_port, (u16 *) &buffsize);

Colin noted that this will behave differently on big endian
architectures compared to little endian architectures.

Fix this by following Colin's suggestion and have the function accept
and return 'u32' instead of passing the current size by reference.

Fixes: da382875c616 ("mlxsw: spectrum: Extend to support Spectrum-3 ASIC")
Fixes: 60833d54d56c ("mlxsw: spectrum: Adjust headroom buffers for 8x ports")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Colin Ian King <colin.king@canonical.com>
Suggested-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-22 16:29:51 -07:00
Dejin Zheng
6d61f483f1 net: phy: smsc: fix printing too many logs
Commit 7ae7ad2f11ef47 ("net: phy: smsc: use phy_read_poll_timeout()
to simplify the code") will print a lot of logs as follows when Ethernet
cable is not connected:

[    4.473105] SMSC LAN8710/LAN8720 2188000.ethernet-1:00: lan87xx_read_status failed: -110

When wait 640 ms for check ENERGYON bit, the timeout should not be
regarded as an actual error and an error message also should not be
printed. due to a hardware bug in LAN87XX device, it leads to unstable
detection of plugging in Ethernet cable when LAN87xx is in Energy Detect
Power-Down mode. the workaround for it involves, when the link is down,
and at each read_status() call:

- disable EDPD mode, forcing the PHY out of low-power mode
- waiting 640ms to see if we have any energy detected from the media
- re-enable entry to EDPD mode

This is presumably enough to allow the PHY to notice that a cable is
connected, and resume normal operations to negotiate with the partner.
The problem is that when no media is detected, the 640ms wait times
out and this commit was modified to prints an error message. it is an
inappropriate conversion by used phy_read_poll_timeout() to introduce
this bug. so fix this issue by use read_poll_timeout() to replace
phy_read_poll_timeout().

Fixes: 7ae7ad2f11ef47 ("net: phy: smsc: use phy_read_poll_timeout() to simplify the code")
Reported-by: Kevin Groeneveld <kgroeneveld@gmail.com>
Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-22 16:08:48 -07:00
Sean Christopherson
2dbebf7ae1 KVM: nVMX: Plumb L2 GPA through to PML emulation
Explicitly pass the L2 GPA to kvm_arch_write_log_dirty(), which for all
intents and purposes is vmx_write_pml_buffer(), instead of having the
latter pull the GPA from vmcs.GUEST_PHYSICAL_ADDRESS.  If the dirty bit
update is the result of KVM emulation (rare for L2), then the GPA in the
VMCS may be stale and/or hold a completely unrelated GPA.

Fixes: c5f983f6e8455 ("nVMX: Implement emulated Page Modification Logging")
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200622215832.22090-2-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-06-22 18:23:03 -04:00
Felix Fietkau
b0c34bde72 MAINTAINERS: update email address for Felix Fietkau
The old address has been bouncing for a while now

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-22 12:57:11 -07:00
Shay Drory
116a1b9f1c IB/mad: Fix use after free when destroying MAD agent
Currently, when RMPP MADs are processed while the MAD agent is destroyed,
it could result in use after free of rmpp_recv, as decribed below:

	cpu-0						cpu-1
	-----						-----
ib_mad_recv_done()
 ib_mad_complete_recv()
  ib_process_rmpp_recv_wc()
						unregister_mad_agent()
						 ib_cancel_rmpp_recvs()
						  cancel_delayed_work()
   process_rmpp_data()
    start_rmpp()
     queue_delayed_work(rmpp_recv->cleanup_work)
						  destroy_rmpp_recv()
						   free_rmpp_recv()
     cleanup_work()[1]
      spin_lock_irqsave(&rmpp_recv->agent->lock) <-- use after free

[1] cleanup_work() == recv_cleanup_handler

Fix it by waiting for the MAD agent reference count becoming zero before
calling to ib_cancel_rmpp_recvs().

Fixes: 9a41e38a467c ("IB/mad: Use IDR for agent IDs")
Link: https://lore.kernel.org/r/20200621104738.54850-2-leon@kernel.org
Signed-off-by: Shay Drory <shayd@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-06-22 14:57:44 -03:00
Leon Romanovsky
6eefa839c4 RDMA/mlx5: Protect from kernel crash if XRC_TGT doesn't have udata
Don't deref udata if it is NULL

  BUG: kernel NULL pointer dereference, address: 0000000000000030
  #PF: supervisor read access in kernel mode
  #PF: error_code(0x0000) - not-present page
  PGD 0 P4D 0
  Oops: 0000   SMP PTI
  CPU: 2 PID: 1592 Comm: python3 Not tainted 5.7.0-rc6+ #1
  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014
  RIP: 0010:create_qp+0x39e/0xae0 [mlx5_ib]
  Code: c0 0d 00 00 bf 10 01 00 00 e8 be a9 e4 e0 48 85 c0 49 89 c2 0f 84 0c 07 00 00 41 8b 85 74 63 01 00 0f c8 a9 00 00 00 10 74 0a <41> 8b 46 30 0f c8 41 89 42 14 41 8b 52 18 41 0f b6 4a 1c 0f ca 89
  RSP: 0018:ffffc9000067f8b0 EFLAGS: 00010206
  RAX: 0000000010170000 RBX: ffff888441313000 RCX: 0000000000000000
  RDX: 0000000000000200 RSI: 0000000000000000 RDI: ffff88845b1d4400
  RBP: ffffc9000067fa60 R08: 0000000000000200 R09: ffff88845b1d4200
  R10: ffff88845b1d4200 R11: ffff888441313000 R12: ffffc9000067f950
  R13: ffff88846ac00140 R14: 0000000000000000 R15: ffff88846c2bc000
  FS:  00007faa1a3c0540(0000) GS:ffff88846fd00000(0000) knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: 0000000000000030 CR3: 0000000446dca003 CR4: 0000000000760ea0
  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
  PKRU: 55555554
  Call Trace:
   ? __switch_to_asm+0x40/0x70
   ? __switch_to_asm+0x34/0x70
   mlx5_ib_create_qp+0x897/0xfa0 [mlx5_ib]
   ib_create_qp+0x9e/0x300 [ib_core]
   create_qp+0x92d/0xb20 [ib_uverbs]
   ? ib_uverbs_cq_event_handler+0x30/0x30 [ib_uverbs]
   ? release_resource+0x30/0x30
   ib_uverbs_create_qp+0xc4/0xe0 [ib_uverbs]
   ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0xc8/0xf0 [ib_uverbs]
   ib_uverbs_run_method+0x223/0x770 [ib_uverbs]
   ? track_pfn_remap+0xa7/0x100
   ? uverbs_disassociate_api+0xd0/0xd0 [ib_uverbs]
   ? remap_pfn_range+0x358/0x490
   ib_uverbs_cmd_verbs.isra.6+0x19b/0x370 [ib_uverbs]
   ? rdma_umap_priv_init+0x82/0xe0 [ib_core]
   ? vm_mmap_pgoff+0xec/0x120
   ib_uverbs_ioctl+0xc0/0x120 [ib_uverbs]
   ksys_ioctl+0x92/0xb0
   __x64_sys_ioctl+0x16/0x20
   do_syscall_64+0x48/0x130
   entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fixes: e383085c2425 ("RDMA/mlx5: Set ECE options during QP create")
Link: https://lore.kernel.org/r/20200621115959.60126-1-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-06-22 14:40:53 -03:00
Vitaly Kuznetsov
312d16c7c0 KVM: x86/mmu: Avoid mixing gpa_t with gfn_t in walk_addr_generic()
translate_gpa() returns a GPA, assigning it to 'real_gfn' seems obviously
wrong. There is no real issue because both 'gpa_t' and 'gfn_t' are u64 and
we don't use the value in 'real_gfn' as a GFN, we do

 real_gfn = gpa_to_gfn(real_gfn);

instead. 'If you see a "buffalo" sign on an elephant's cage, do not trust
your eyes', but let's fix it for good.

No functional change intended.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20200622151435.752560-1-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-06-22 13:38:30 -04:00
Paolo Bonzini
44d5271707 KVM: LAPIC: ensure APIC map is up to date on concurrent update requests
The following race can cause lost map update events:

         cpu1                            cpu2

                                apic_map_dirty = true
  ------------------------------------------------------------
                                kvm_recalculate_apic_map:
                                     pass check
                                         mutex_lock(&kvm->arch.apic_map_lock);
                                         if (!kvm->arch.apic_map_dirty)
                                     and in process of updating map
  -------------------------------------------------------------
    other calls to
       apic_map_dirty = true         might be too late for affected cpu
  -------------------------------------------------------------
                                     apic_map_dirty = false
  -------------------------------------------------------------
    kvm_recalculate_apic_map:
    bail out on
      if (!kvm->arch.apic_map_dirty)

To fix it, record the beginning of an update of the APIC map in
apic_map_dirty.  If another APIC map change switches apic_map_dirty
back to DIRTY during the update, kvm_recalculate_apic_map should not
make it CLEAN, and the other caller will go through the slow path.

Reported-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-06-22 13:37:30 -04:00
Mark Zhang
c1d869d64a RDMA/counter: Query a counter before release
Query a dynamically-allocated counter before release it, to update it's
hwcounters and log all of them into history data. Otherwise all values of
these hwcounters will be lost.

Fixes: f34a55e497e8 ("RDMA/core: Get sum value of all counters when perform a sysfs stat read")
Link: https://lore.kernel.org/r/20200621110000.56059-1-leon@kernel.org
Signed-off-by: Mark Zhang <markz@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-06-22 14:36:56 -03:00
Linus Torvalds
dd0d718152 spi: Fixes for v5.8
Quite a lot of fixes here for no single reason.  There's a collection of
 the usual sort of device specific fixes and also a bunch of people have
 been working on spidev and the userspace test program spidev_test so
 they've got an unusually large collection of small fixes.
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Merge tag 'spi-fix-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "Quite a lot of fixes here for no single reason.

  There's a collection of the usual sort of device specific fixes and
  also a bunch of people have been working on spidev and the userspace
  test program spidev_test so they've got an unusually large collection
  of small fixes"

* tag 'spi-fix-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: spidev: fix a potential use-after-free in spidev_release()
  spi: spidev: fix a race between spidev_release and spidev_remove
  spi: stm32-qspi: Fix error path in case of -EPROBE_DEFER
  spi: uapi: spidev: Use TABs for alignment
  spi: spi-fsl-dspi: Free DMA memory with matching function
  spi: tools: Add macro definitions to fix build errors
  spi: tools: Make default_tx/rx and input_tx static
  spi: dt-bindings: amlogic, meson-gx-spicc: Fix schema for meson-g12a
  spi: rspi: Use requested instead of maximum bit rate
  spi: spidev_test: Use %u to format unsigned numbers
  spi: sprd: switch the sequence of setting WDG_LOAD_LOW and _HIGH
2020-06-22 09:49:59 -07:00
Igor Mammedov
af28dfacbe kvm: lapic: fix broken vcpu hotplug
Guest fails to online hotplugged CPU with error
  smpboot: do_boot_cpu failed(-1) to wakeup CPU#4

It's caused by the fact that kvm_apic_set_state(), which used to call
recalculate_apic_map() unconditionally and pulled hotplugged CPU into
apic map, is updating map conditionally on state changes.  In this case
the APIC map is not considered dirty and the is not updated.

Fix the issue by forcing unconditional update from kvm_apic_set_state(),
like it used to be.

Fixes: 4abaffce4d25a ("KVM: LAPIC: Recalculate apic map in batch")
Cc: stable@vger.kernel.org
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20200622160830.426022-1-imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-06-22 12:48:44 -04:00
Linus Torvalds
751645789f regulator: Fixes for v5.8
This has a fix for the refactoring out of the pickable ranges
 functionality, plus the removal of a BROKEN dependency on mt6358 now
 that the dependencies were merged in -rc1 and a couple of device
 specific fixes.
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Merge tag 'regulator-fix-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator fixes from Mark Brown:
 "This has a fix for the refactoring out of the pickable ranges
  functionality, plus the removal of a BROKEN dependency on mt6358 now
  that the dependencies were merged in -rc1 and a couple of device
  specific fixes"

* tag 'regulator-fix-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: mt6358: Remove BROKEN dependency
  regualtor: pfuze100: correct sw1a/sw2 on pfuze3000
  regulator: Fix pickable ranges mapping
  regulator: da9063: fix LDO9 suspend and warning.
2020-06-22 09:47:59 -07:00
Linus Torvalds
2a00087068 regmap: Fixes for v5.8
A few small fixes, none of which are likely to have any substantial
 impact here - the most substantial one is a fix for a long standing
 memory leak on devices that use register patching which will only have
 an impact if the device is removed and re-added.
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Merge tag 'regmap-fix-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap fixes from Mark Brown:
 "A few small fixes, none of which are likely to have any substantial
  impact here - the most substantial one is a fix for a long standing
  memory leak on devices that use register patching which will only have
  an impact if the device is removed and re-added"

* tag 'regmap-fix-v5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: Fix memory leak from regmap_register_patch
  regmap: fix the kerneldoc for regmap_test_bits()
  regmap: fix alignment issue
2020-06-22 09:46:43 -07:00
Eugenio Pérez
cb91909e48 tools/virtio: Use tools/include/list.h instead of stubs
It should not make any significant difference but reduce stub code.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Link: https://lore.kernel.org/r/20200418102217.32327-9-eperezma@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-06-22 12:34:22 -04:00
Eugenio Pérez
1d8bf5c3a3 tools/virtio: Reset index in virtio_test --reset.
This way behavior for vhost is more like a VM.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Link: https://lore.kernel.org/r/20200418102217.32327-8-eperezma@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-06-22 12:34:22 -04:00
Eugenio Pérez
6741239260 tools/virtio: Extract virtqueue initialization in vq_reset
So we can reset after that in the main loop.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Link: https://lore.kernel.org/r/20200418102217.32327-7-eperezma@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-06-22 12:34:22 -04:00
Eugenio Pérez
4cfb939353 tools/virtio: Use __vring_new_virtqueue in virtio_test.c
As updated in ("2a2d1382fe9d virtio: Add improved queue allocation API")

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Link: https://lore.kernel.org/r/20200418102217.32327-6-eperezma@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-06-22 12:34:22 -04:00
Eugenio Pérez
264ee5aa81 tools/virtio: Add --reset
Currently, it only removes and add backend, but it will reset vq
position in future commits.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Link: https://lore.kernel.org/r/20200418102217.32327-5-eperezma@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-06-22 12:34:21 -04:00
Eugenio Pérez
7add78b2a6 tools/virtio: Add --batch=random option
So we can test with non-deterministic batches in flight.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Link: https://lore.kernel.org/r/20200418102217.32327-4-eperezma@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-06-22 12:34:21 -04:00
Eugenio Pérez
633fae33d5 tools/virtio: Add --batch option
This allow to test vhost having >1 buffers in flight

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Link: https://lore.kernel.org/r/20200401183118.8334-5-eperezma@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://lore.kernel.org/r/20200418102217.32327-3-eperezma@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-06-22 12:34:21 -04:00
David Hildenbrand
b3562c6087 virtio-mem: add memory via add_memory_driver_managed()
Virtio-mem managed memory is always detected and added by the virtio-mem
driver, never using something like the firmware-provided memory map.
This is the case after an ordinary system reboot, and has to be guaranteed
after kexec. Especially, virtio-mem added memory resources can contain
inaccessible parts ("unblocked memory blocks"), blindly forwarding them
to a kexec kernel is dangerous, as unplugged memory will get accessed
(esp. written).

Let's use the new way of adding special driver-managed memory introduced
in commit 7b7b27214bba ("mm/memory_hotplug: introduce
add_memory_driver_managed()").

This will result in no entries in /sys/firmware/memmap ("raw firmware-
provided memory map"), the memory resource will be flagged
IORESOURCE_MEM_DRIVER_MANAGED (esp., kexec_file_load() will not place
kexec images on this memory), and it is exposed as "System RAM
(virtio_mem)" in /proc/iomem, so esp. kexec-tools can properly handle it.

Example /proc/iomem before this change:
  [...]
  140000000-333ffffff : virtio0
    140000000-147ffffff : System RAM
  334000000-533ffffff : virtio1
    338000000-33fffffff : System RAM
    340000000-347ffffff : System RAM
    348000000-34fffffff : System RAM
  [...]

Example /proc/iomem after this change:
  [...]
  140000000-333ffffff : virtio0
    140000000-147ffffff : System RAM (virtio_mem)
  334000000-533ffffff : virtio1
    338000000-33fffffff : System RAM (virtio_mem)
    340000000-347ffffff : System RAM (virtio_mem)
    348000000-34fffffff : System RAM (virtio_mem)
  [...]

Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Cc: teawater <teawaterz@linux.alibaba.com>
Fixes: 5f1f79bbc9e26 ("virtio-mem: Paravirtualized memory hotplug")
Signed-off-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20200611093518.5737-1-david@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
2020-06-22 12:34:21 -04:00
Dan Carpenter
1c3d69ab53 virtio-mem: silence a static checker warning
Smatch complains that "rc" can be uninitialized if we hit the "break;"
statement on the first iteration through the loop.  I suspect that this
can't happen in real life, but returning a zero literal is cleaner and
silence the static checker warning.

Fixes: 5f1f79bbc9e2 ("virtio-mem: Paravirtualized memory hotplug")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20200610085911.GC5439@mwanda
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-06-22 12:34:21 -04:00
Dan Carpenter
c09cc2c319 vhost_vdpa: Fix potential underflow in vhost_vdpa_mmap()
The "vma->vm_pgoff" variable is an unsigned long so if it's larger than
INT_MAX then "index" can be negative leading to an underflow.  Fix this
by changing the type of "index" to "unsigned long".

Fixes: ddd89d0a059d ("vhost_vdpa: support doorbell mapping via mmap")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20200610085852.GB5439@mwanda
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-06-22 12:34:21 -04:00
Jason Wang
24eae8ebfb vdpa: fix typos in the comments for __vdpa_alloc_device()
Fix two typos in the comments for __vdpa_alloc_device().

Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200527060528.9100-1-jasowang@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-06-22 12:34:21 -04:00
Takashi Iwai
91ef3d9f9f ASoC: Fixes for v5.8
This is a collection of mostly small fixes, mostly fixing fallout from
 some of the DPCM changes that went in last time around which shook out
 some issues on i.MX and Qualcomm platforms.  The addition of a managed
 version of snd_soc_register_dai() is to fix resource leaks.
 
 There's also a few new device IDs for x86 systems.
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Merge tag 'asoc-fix-v5.8-rc2' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v5.8

This is a collection of mostly small fixes, mostly fixing fallout from
some of the DPCM changes that went in last time around which shook out
some issues on i.MX and Qualcomm platforms.  The addition of a managed
version of snd_soc_register_dai() is to fix resource leaks.

There's also a few new device IDs for x86 systems.
2020-06-22 13:49:14 +02:00
Jason A. Donenfeld
625d344978 Revert "kernel/printk: add kmsg SEEK_CUR handling"
This reverts commit 8ece3b3eb576a78d2e67ad4c3a80a39fa6708809.

This commit broke userspace. Bash uses ESPIPE to determine whether or
not the file should be read using "unbuffered I/O", which means reading
1 byte at a time instead of 128 bytes at a time. I used to use bash to
read through kmsg in a really quite nasty way:

    while read -t 0.1 -r line 2>/dev/null || [[ $? -ne 142 ]]; do
       echo "SARU $line"
    done < /dev/kmsg

This will show all lines that can fit into the 128 byte buffer, and skip
lines that don't. That's pretty awful, but at least it worked.

With this change, bash now tries to do 1-byte reads, which means it
skips all the lines, which is worse than before.

Now, I don't really care very much about this, and I'm already look for
a workaround. But I did just spend an hour trying to figure out why my
scripts were broken. Either way, it makes no difference to me personally
whether this is reverted, but it might be something to consider. If you
declare that "trying to read /dev/kmsg with bash is terminally stupid
anyway," I might be inclined to agree with you. But do note that bash
uses lseek(fd, 0, SEEK_CUR)==>ESPIPE to determine whether or not it's
reading from a pipe.

Cc: Bruno Meneguele <bmeneg@redhat.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: David Laight <David.Laight@ACULAB.COM>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Petr Mladek <pmladek@suse.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-21 20:47:20 -07:00
Linus Torvalds
48778464bb Linux 5.8-rc2 v5.8-rc2 2020-06-21 15:45:29 -07:00
Linus Torvalds
817d914d17 selinux/stable-5.8 PR 20200621
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Merge tag 'selinux-pr-20200621' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux

Pull SELinux fixes from Paul Moore:
 "Three small patches to fix problems in the SELinux code, all found via
  clang.

  Two patches fix potential double-free conditions and one fixes an
  undefined return value"

* tag 'selinux-pr-20200621' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
  selinux: fix undefined return of cond_evaluate_expr
  selinux: fix a double free in cond_read_node()/cond_read_list()
  selinux: fix double free
2020-06-21 15:41:24 -07:00
Linus Torvalds
16f4aa9b7c Pin control fixes for the v5.8 cycle, first take:
- Fix a warning on the Qualcomm SPMI GPIO chip being instatiated
   twice without a unique irqchip struct.
 - Use the noirq variants of the suspend and resume callbacks in
   the Tegra driver.
 - Clean up the errorpath on the MCP23s08 driver.
 - Revert the use of devm_of_iomap() in the Freescale driver as
   it was regressing the platform.
 - Add some missing pins in the Qualcomm IPQ6018 driver.
 - Fix a simple documentation bug in the pinctrl-single driver.
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Merge tag 'pinctrl-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control fixes from Linus Walleij:
 "Some early fixes collected during the first week after the merge
  window, all pretty self-evident, with the details below. The revert is
  the crucial thing.

   - Fix a warning on the Qualcomm SPMI GPIO chip being instatiated
     twice without a unique irqchip struct

   - Use the noirq variants of the suspend and resume callbacks in the
     Tegra driver

   - Clean up the errorpath on the MCP23s08 driver

   - Revert the use of devm_of_iomap() in the Freescale driver as it was
     regressing the platform

   - Add some missing pins in the Qualcomm IPQ6018 driver

   - Fix a simple documentation bug in the pinctrl-single driver"

* tag 'pinctrl-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: single: fix function name in documentation
  pinctrl: qcom: ipq6018 Add missing pins in qpic pin group
  Revert "pinctrl: freescale: imx: Use 'devm_of_iomap()' to avoid a resource leak in case of error in 'imx_pinctrl_probe()'"
  pinctrl: mcp23s08: Split to three parts: fix ptr_ret.cocci warnings
  pinctrl: tegra: Use noirq suspend/resume callbacks
  pinctrl: qcom: spmi-gpio: fix warning about irq chip reusage
2020-06-21 13:04:57 -07:00
Linus Torvalds
be9160a90d Kbuild fixes for v5.8
- fix -gz=zlib compiler option test for CONFIG_DEBUG_INFO_COMPRESSED
 
  - improve cc-option in scripts/Kbuild.include to clean up temp files
 
  - improve cc-option in scripts/Kconfig.include for more reliable compile
    option test
 
  - do not copy modules.builtin by 'make install' because it would break
    existing systems
 
  - use 'userprogs' syntax for watch_queue sample
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Merge tag 'kbuild-fixes-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - fix -gz=zlib compiler option test for CONFIG_DEBUG_INFO_COMPRESSED

 - improve cc-option in scripts/Kbuild.include to clean up temp files

 - improve cc-option in scripts/Kconfig.include for more reliable
   compile option test

 - do not copy modules.builtin by 'make install' because it would break
   existing systems

 - use 'userprogs' syntax for watch_queue sample

* tag 'kbuild-fixes-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  samples: watch_queue: build sample program for target architecture
  Revert "Makefile: install modules.builtin even if CONFIG_MODULES=n"
  scripts: Fix typo in headers_install.sh
  kconfig: unify cc-option and as-option
  kbuild: improve cc-option to clean up all temporary files
  Makefile: Improve compressed debug info support detection
2020-06-21 12:44:52 -07:00
Linus Torvalds
7561393908 powerpc fixes for 5.8 #3
One fix for the interrupt rework we did last release which broke KVM-PR.
 
 Three commits fixing some fallout from the READ_ONCE() changes interacting badly
 with our 8xx 16K pages support, which uses a pte_t that is a structure of 4
 actual PTEs.
 
 A cleanup of the 8xx pte_update() to use the newly added pmd_off().
 
 A fix for a crash when handling an oops if CONFIG_DEBUG_VIRTUAL is enabled.
 
 A minor fix for the SPU syscall generation.
 
 Thanks to:
   Aneesh Kumar K.V, Christian Zigotzky, Christophe Leroy, Mike Rapoport,
   Nicholas Piggin.
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Merge tag 'powerpc-5.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - One fix for the interrupt rework we did last release which broke
   KVM-PR

 - Three commits fixing some fallout from the READ_ONCE() changes
   interacting badly with our 8xx 16K pages support, which uses a pte_t
   that is a structure of 4 actual PTEs

 - A cleanup of the 8xx pte_update() to use the newly added pmd_off()

 - A fix for a crash when handling an oops if CONFIG_DEBUG_VIRTUAL is
   enabled

 - A minor fix for the SPU syscall generation

Thanks to Aneesh Kumar K.V, Christian Zigotzky, Christophe Leroy, Mike
Rapoport, Nicholas Piggin.

* tag 'powerpc-5.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/8xx: Provide ptep_get() with 16k pages
  mm: Allow arches to provide ptep_get()
  mm/gup: Use huge_ptep_get() in gup_hugepte()
  powerpc/syscalls: Use the number when building SPU syscall table
  powerpc/8xx: use pmd_off() to access a PMD entry in pte_update()
  powerpc/64s: Fix KVM interrupt using wrong save area
  powerpc: Fix kernel crash in show_instructions() w/DEBUG_VIRTUAL
2020-06-21 10:02:53 -07:00
Linus Torvalds
93bbca271a Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:

 - NULL dereference in octeontx

 - PM reference imbalance in ks-sa

 - deadlock in crypto manager

 - memory leak in drbg

 - missing socket limit check on receive SG list size in algif_skcipher

 - typos in caam

 - warnings in ccp and hisilicon

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: drbg - always try to free Jitter RNG instance
  crypto: marvell/octeontx - Fix a potential NULL dereference
  crypto: algboss - don't wait during notifier callback
  crypto: caam - fix typos
  crypto: ccp - Fix sparse warnings in sev-dev
  crypto: hisilicon - Cap block size at 2^31
  crypto: algif_skcipher - Cap recv SG list at ctx->used
  hwrng: ks-sa - Fix runtime PM imbalance on error
2020-06-21 10:01:03 -07:00
Masahiro Yamada
214377e9b7 samples: watch_queue: build sample program for target architecture
This userspace program includes UAPI headers exported to usr/include/.
'make headers' always works for the target architecture (i.e. the same
architecture as the kernel), so the sample program should be built for
the target as well. Kbuild now supports 'userprogs' for that.

I also guarded the CONFIG option by 'depends on CC_CAN_LINK' because
$(CC) may not provide libc.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-06-22 01:56:09 +09:00
Masahiro Yamada
2c6d9636ad Revert "Makefile: install modules.builtin even if CONFIG_MODULES=n"
This reverts commit e0b250b57dcf403529081e5898a9de717f96b76b,
which broke build systems that need to install files to a certain
path, but do not set INSTALL_MOD_PATH when invoking 'make install'.

  $ make INSTALL_PATH=/tmp/destdir install
  mkdir: cannot create directory ‘/lib/modules/5.8.0-rc1+/’: Permission denied
  Makefile:1342: recipe for target '_builtin_inst_' failed
  make: *** [_builtin_inst_] Error 1

While modules.builtin is useful also for CONFIG_MODULES=n, this change
in the behavior is quite unexpected. Maybe "make modules_install"
can install modules.builtin irrespective of CONFIG_MODULES as Jonas
originally suggested.

Anyway, that commit should be reverted ASAP.

Reported-by: Douglas Anderson <dianders@chromium.org>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Cc: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
2020-06-22 00:19:14 +09:00
Rob Gill
67c20de35a net: Add MODULE_DESCRIPTION entries to network modules
The user tool modinfo is used to get information on kernel modules, including a
description where it is available.

This patch adds a brief MODULE_DESCRIPTION to the following modules:

9p
drop_monitor
esp4_offload
esp6_offload
fou
fou6
ila
sch_fq
sch_fq_codel
sch_hhf

Signed-off-by: Rob Gill <rrobgill@protonmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-20 21:33:57 -07:00
David Howells
0041cd5a50 rxrpc: Fix notification call on completion of discarded calls
When preallocated service calls are being discarded, they're passed to
->discard_new_call() to have the caller clean up any attached higher-layer
preallocated pieces before being marked completed.  However, the act of
marking them completed now invokes the call's notification function - which
causes a problem because that function might assume that the previously
freed pieces of memory are still there.

Fix this by setting a dummy notification function on the socket after
calling ->discard_new_call().

This results in the following kasan message when the kafs module is
removed.

==================================================================
BUG: KASAN: use-after-free in afs_wake_up_async_call+0x6aa/0x770 fs/afs/rxrpc.c:707
Write of size 1 at addr ffff8880946c39e4 by task kworker/u4:1/21

CPU: 0 PID: 21 Comm: kworker/u4:1 Not tainted 5.8.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x18f/0x20d lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0xd3/0x413 mm/kasan/report.c:383
 __kasan_report mm/kasan/report.c:513 [inline]
 kasan_report.cold+0x1f/0x37 mm/kasan/report.c:530
 afs_wake_up_async_call+0x6aa/0x770 fs/afs/rxrpc.c:707
 rxrpc_notify_socket+0x1db/0x5d0 net/rxrpc/recvmsg.c:40
 __rxrpc_set_call_completion.part.0+0x172/0x410 net/rxrpc/recvmsg.c:76
 __rxrpc_call_completed net/rxrpc/recvmsg.c:112 [inline]
 rxrpc_call_completed+0xca/0xf0 net/rxrpc/recvmsg.c:111
 rxrpc_discard_prealloc+0x781/0xab0 net/rxrpc/call_accept.c:233
 rxrpc_listen+0x147/0x360 net/rxrpc/af_rxrpc.c:245
 afs_close_socket+0x95/0x320 fs/afs/rxrpc.c:110
 afs_net_exit+0x1bc/0x310 fs/afs/main.c:155
 ops_exit_list.isra.0+0xa8/0x150 net/core/net_namespace.c:186
 cleanup_net+0x511/0xa50 net/core/net_namespace.c:603
 process_one_work+0x965/0x1690 kernel/workqueue.c:2269
 worker_thread+0x96/0xe10 kernel/workqueue.c:2415
 kthread+0x3b5/0x4a0 kernel/kthread.c:291
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293

Allocated by task 6820:
 save_stack+0x1b/0x40 mm/kasan/common.c:48
 set_track mm/kasan/common.c:56 [inline]
 __kasan_kmalloc mm/kasan/common.c:494 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:467
 kmem_cache_alloc_trace+0x153/0x7d0 mm/slab.c:3551
 kmalloc include/linux/slab.h:555 [inline]
 kzalloc include/linux/slab.h:669 [inline]
 afs_alloc_call+0x55/0x630 fs/afs/rxrpc.c:141
 afs_charge_preallocation+0xe9/0x2d0 fs/afs/rxrpc.c:757
 afs_open_socket+0x292/0x360 fs/afs/rxrpc.c:92
 afs_net_init+0xa6c/0xe30 fs/afs/main.c:125
 ops_init+0xaf/0x420 net/core/net_namespace.c:151
 setup_net+0x2de/0x860 net/core/net_namespace.c:341
 copy_net_ns+0x293/0x590 net/core/net_namespace.c:482
 create_new_namespaces+0x3fb/0xb30 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0xbd/0x1f0 kernel/nsproxy.c:231
 ksys_unshare+0x43d/0x8e0 kernel/fork.c:2983
 __do_sys_unshare kernel/fork.c:3051 [inline]
 __se_sys_unshare kernel/fork.c:3049 [inline]
 __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3049
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Freed by task 21:
 save_stack+0x1b/0x40 mm/kasan/common.c:48
 set_track mm/kasan/common.c:56 [inline]
 kasan_set_free_info mm/kasan/common.c:316 [inline]
 __kasan_slab_free+0xf7/0x140 mm/kasan/common.c:455
 __cache_free mm/slab.c:3426 [inline]
 kfree+0x109/0x2b0 mm/slab.c:3757
 afs_put_call+0x585/0xa40 fs/afs/rxrpc.c:190
 rxrpc_discard_prealloc+0x764/0xab0 net/rxrpc/call_accept.c:230
 rxrpc_listen+0x147/0x360 net/rxrpc/af_rxrpc.c:245
 afs_close_socket+0x95/0x320 fs/afs/rxrpc.c:110
 afs_net_exit+0x1bc/0x310 fs/afs/main.c:155
 ops_exit_list.isra.0+0xa8/0x150 net/core/net_namespace.c:186
 cleanup_net+0x511/0xa50 net/core/net_namespace.c:603
 process_one_work+0x965/0x1690 kernel/workqueue.c:2269
 worker_thread+0x96/0xe10 kernel/workqueue.c:2415
 kthread+0x3b5/0x4a0 kernel/kthread.c:291
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293

The buggy address belongs to the object at ffff8880946c3800
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 484 bytes inside of
 1024-byte region [ffff8880946c3800, ffff8880946c3c00)
The buggy address belongs to the page:
page:ffffea000251b0c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0
flags: 0xfffe0000000200(slab)
raw: 00fffe0000000200 ffffea0002546508 ffffea00024fa248 ffff8880aa000c40
raw: 0000000000000000 ffff8880946c3000 0000000100000002 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880946c3880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880946c3900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880946c3980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                       ^
 ffff8880946c3a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880946c3a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

Reported-by: syzbot+d3eccef36ddbd02713e9@syzkaller.appspotmail.com
Fixes: 5ac0d62226a0 ("rxrpc: Fix missing notification")
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-20 21:31:43 -07:00
David S. Miller
7fcaf73193 Merge tag 'ieee802154-for-davem-2020-06-19' of git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan
Stefan Schmidt says:

====================
pull-request: ieee802154 for net 2020-06-19

An update from ieee802154 for your *net* tree.

Just two small maintenance fixes to update references to the new project
homepage.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-20 21:30:23 -07:00
Linus Torvalds
64677779e8 SCSI fixes on 20200620
One minor fix and two patches reworking the ata dma drain for the
 !CONFIG_LIBATA case.  The latter is a regression fix for cc97923a5bcc
 ("block: move dma drain handling to scsi")
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "One minor fix and two patches reworking the ata dma drain for the
  !CONFIG_LIBATA case. The latter is a 5.7 regression fix"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: Wire up ata_scsi_dma_need_drain for SAS HBA drivers
  scsi: libata: Provide an ata_scsi_dma_need_drain stub for !CONFIG_ATA
  scsi: ufs-bsg: Fix runtime PM imbalance on error
2020-06-20 19:23:13 -07:00
Linus Torvalds
a5c6a1f0fe Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:

 - a small collection of remaining API conversion patches (all acked)
   which allow to finally remove the deprecated API

 - some documentation fixes and a MAINTAINERS addition

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  MAINTAINERS: Add robert and myself as qcom i2c cci maintainers
  i2c: smbus: Fix spelling mistake in the comments
  Documentation/i2c: SMBus start signal is S not A
  i2c: remove deprecated i2c_new_device API
  Documentation: media: convert to use i2c_new_client_device()
  video: backlight: tosa_lcd: convert to use i2c_new_client_device()
  x86/platform/intel-mid: convert to use i2c_new_client_device()
  drm: encoder_slave: use new I2C API
  drm: encoder_slave: fix refcouting error for modules
2020-06-20 19:18:27 -07:00
Hangbin Liu
54eeea0d70 tc-testing: update geneve options match in tunnel_key unit tests
Since iproute2 commit f72c3ad00f3b ("tc: m_tunnel_key: add options
support for vxlan"), the geneve opt output use key word "geneve_opts"
instead of "geneve_opt". To make compatibility for both old and new
iproute2, let's accept both "geneve_opt" and "geneve_opts".

Suggested-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Tested-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-20 17:35:18 -07:00
Heiner Kallweit
89fbd26cca r8169: fix firmware not resetting tp->ocp_base
Typically the firmware takes care that tp->ocp_base is reset to its
default value. That's not the case (at least) for RTL8117.
As a result subsequent PHY access reads/writes the wrong page and
the link is broken. Fix this be resetting tp->ocp_base explicitly.

Fixes: 229c1e0dfd3d ("r8169: load firmware for RTL8168fp/RTL8117")
Reported-by: Aaron Ma <mapengyu@gmail.com>
Tested-by: Aaron Ma <mapengyu@gmail.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-20 17:31:26 -07:00
Dany Madden
8b40eb7350 ibmvnic: continue to init in CRQ reset returns H_CLOSED
Continue the reset path when partner adapter is not ready or H_CLOSED is
returned from reset crq. This patch allows the CRQ init to proceed to
establish a valid CRQ for traffic to flow after reset.

Signed-off-by: Dany Madden <drt@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-20 17:28:41 -07:00
Shannon Nelson
b59eabd23e ionic: tame the watchdog timer on reconfig
Even with moving netif_tx_disable() to an earlier point when
taking down the queues for a reconfiguration, we still end
up with the occasional netdev watchdog Tx Timeout complaint.
The old method of using netif_trans_update() works fine for
queue 0, but has no effect on the remaining queues.  Using
netif_device_detach() allows us to signal to the watchdog to
ignore us for the moment.

Fixes: beead698b173 ("ionic: Add the basic NDO callbacks for netdev support")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Acked-by: Jonathan Toppins <jtoppins@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-06-20 17:26:33 -07:00
Drew Fustini
25fae75215 pinctrl: single: fix function name in documentation
Use the correct the function name in the documentation for
"pcs_parse_one_pinctrl_entry()".

"smux_parse_one_pinctrl_entry()" appears to be an artifact from the
development of a prior patch series ("simple pinmux driver") which
transformed into pinctrl-single.

Signed-off-by: Drew Fustini <drew@beagleboard.org>
Link: https://lore.kernel.org/r/20200612112758.GA3407886@x1
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-06-20 22:41:32 +02:00
Linus Torvalds
8b6ddd10d6 A few fixes and small cleanups for tracing:
- Have recordmcount work with > 64K sections (to support LTO)
  - kprobe RCU fixes
  - Correct a kprobe critical section with missing mutex
  - Remove redundant arch_disarm_kprobe() call
  - Fix lockup when kretprobe triggers within kprobe_flush_task()
  - Fix memory leak in fetch_op_data operations
  - Fix sleep in atomic in ftrace trace array sample code
  - Free up memory on failure in sample trace array code
  - Fix incorrect reporting of function_graph fields in format file
  - Fix quote within quote parsing in bootconfig
  - Fix return value of bootconfig tool
  - Add testcases for bootconfig tool
  - Fix maybe uninitialized warning in ftrace pid file code
  - Remove unused variable in tracing_iter_reset()
  - Fix some typos
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Merge tag 'trace-v5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:

 - Have recordmcount work with > 64K sections (to support LTO)

 - kprobe RCU fixes

 - Correct a kprobe critical section with missing mutex

 - Remove redundant arch_disarm_kprobe() call

 - Fix lockup when kretprobe triggers within kprobe_flush_task()

 - Fix memory leak in fetch_op_data operations

 - Fix sleep in atomic in ftrace trace array sample code

 - Free up memory on failure in sample trace array code

 - Fix incorrect reporting of function_graph fields in format file

 - Fix quote within quote parsing in bootconfig

 - Fix return value of bootconfig tool

 - Add testcases for bootconfig tool

 - Fix maybe uninitialized warning in ftrace pid file code

 - Remove unused variable in tracing_iter_reset()

 - Fix some typos

* tag 'trace-v5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ftrace: Fix maybe-uninitialized compiler warning
  tools/bootconfig: Add testcase for show-command and quotes test
  tools/bootconfig: Fix to return 0 if succeeded to show the bootconfig
  tools/bootconfig: Fix to use correct quotes for value
  proc/bootconfig: Fix to use correct quotes for value
  tracing: Remove unused event variable in tracing_iter_reset
  tracing/probe: Fix memleak in fetch_op_data operations
  trace: Fix typo in allocate_ftrace_ops()'s comment
  tracing: Make ftrace packed events have align of 1
  sample-trace-array: Remove trace_array 'sample-instance'
  sample-trace-array: Fix sleeping function called from invalid context
  kretprobe: Prevent triggering kretprobe from within kprobe_flush_task
  kprobes: Remove redundant arch_disarm_kprobe() call
  kprobes: Fix to protect kick_kprobe_optimizer() by kprobe_mutex
  kprobes: Use non RCU traversal APIs on kprobe_tables if possible
  kprobes: Suppress the suspicious RCU warning on kprobes
  recordmcount: support >64k sections
2020-06-20 13:17:47 -07:00
Linus Torvalds
eede2b9b3f libnvdimm for 5.8-rc2
- Fix the visibility of the region 'align' attribute. The new unit tests
   for region alignment handling caught a corner case where the alignment
   cannot be specified if the region is converted from static to dynamic
   provisioning at runtime.
 
 - Add support for device health retrieval for the persistent memory
   supported by the papr_scm driver. This includes both the standard
   sysfs "health flags" that the nfit persistent memory driver publishes
   and a mechanism for the ndctl tool to retrieve a health-command payload.
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Merge tag 'libnvdimm-for-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm updates from Dan Williams:
 "A feature (papr_scm health retrieval) and a fix (sysfs attribute
  visibility) for v5.8.

  Vaibhav explains in the merge commit below why missing v5.8 would be
  painful and I agreed to try a -rc2 pull because only cosmetics kept
  this out of -rc1 and his initial versions were posted in more than
  enough time for v5.8 consideration:

   'These patches are tied to specific features that were committed to
    customers in upcoming distros releases (RHEL and SLES) whose
    time-lines are tied to 5.8 kernel release.

    Being able to track the health of an nvdimm is critical for our
    customers that are running workloads leveraging papr-scm nvdimms.
    Missing the 5.8 kernel would mean missing the distro timelines and
    shifting forward the availability of this feature in distro kernels
    by at least 6 months'

  Summary:

   - Fix the visibility of the region 'align' attribute.

     The new unit tests for region alignment handling caught a corner
     case where the alignment cannot be specified if the region is
     converted from static to dynamic provisioning at runtime.

   - Add support for device health retrieval for the persistent memory
     supported by the papr_scm driver.

     This includes both the standard sysfs "health flags" that the nfit
     persistent memory driver publishes and a mechanism for the ndctl
     tool to retrieve a health-command payload"

* tag 'libnvdimm-for-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  nvdimm/region: always show the 'align' attribute
  powerpc/papr_scm: Implement support for PAPR_PDSM_HEALTH
  ndctl/papr_scm,uapi: Add support for PAPR nvdimm specific methods
  powerpc/papr_scm: Improve error logging and handling papr_scm_ndctl()
  powerpc/papr_scm: Fetch nvdimm health information from PHYP
  seq_buf: Export seq_buf_printf
  powerpc: Document details on H_SCM_HEALTH hcall
2020-06-20 13:13:21 -07:00
Sivaprakash Murugesan
7f5f4de83c pinctrl: qcom: ipq6018 Add missing pins in qpic pin group
The patch adds missing qpic data pins to qpic pingroup. These pins are
necessary for the qpic nand to work.

Fixes: ef1ea54eab0e ("pinctrl: qcom: Add ipq6018 pinctrl driver")
Signed-off-by: Sivaprakash Murugesan <sivaprak@codeaurora.org>
Link: https://lore.kernel.org/r/1592541089-17700-1-git-send-email-sivaprak@codeaurora.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-06-20 22:05:24 +02:00
Haibo Chen
13f2d25b95 Revert "pinctrl: freescale: imx: Use 'devm_of_iomap()' to avoid a resource leak in case of error in 'imx_pinctrl_probe()'"
This reverts commit ba403242615c2c99e27af7984b1650771a2cc2c9.

After commit 26d8cde5260b ("pinctrl: freescale: imx: add shared
input select reg support"). i.MX7D has two iomux controllers
iomuxc and iomuxc-lpsr which share select_input register for
daisy chain settings.
If use 'devm_of_iomap()', when probe the iomuxc-lpsr, will call
devm_request_mem_region() for the region <0x30330000-0x3033ffff>
for the first time. Then, next time when probe the iomuxc, API
devm_platform_ioremap_resource() will also use the API
devm_request_mem_region() for the share region <0x30330000-0x3033ffff>
again, then cause issue, log like below:

[    0.179561] imx7d-pinctrl 302c0000.iomuxc-lpsr: initialized IMX pinctrl driver
[    0.191742] imx7d-pinctrl 30330000.pinctrl: can't request region for resource [mem 0x30330000-0x3033ffff]
[    0.191842] imx7d-pinctrl: probe of 30330000.pinctrl failed with error -16

Fixes: ba403242615c ("pinctrl: freescale: imx: Use 'devm_of_iomap()' to avoid a resource leak in case of error in 'imx_pinctrl_probe()'")
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Link: https://lore.kernel.org/r/1591673223-1680-1-git-send-email-haibo.chen@nxp.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2020-06-20 22:04:39 +02:00
Linus Torvalds
1566feea45 s390 fixes for 5.8-rc2
- Few ptrace fixes mostly for strace and seccomp_bpf kernel tests
   findings.
 
 - Cleanup unused pm callbacks in virtio ccw.
 
 - Replace kmalloc + memset with kzalloc in crypto.
 
 - Use $(LD) for vDSO linkage to make clang happy.
 
 - Fix vDSO clock_getres() to preserve the same behaviour as
   posix_get_hrtimer_res().
 
 - Fix workqueue cpumask warning when NUMA=n and nr_node_ids=2.
 
 - Reduce SLSB writes during input processing, improve warnings and
   cleanup qdio_data usage in qdio.
 
 - Few fixes to use scnprintf() instead of snprintf().
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Merge tag 's390-5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 fixes from Vasily Gorbik:

 - a few ptrace fixes mostly for strace and seccomp_bpf kernel tests
   findings

 - cleanup unused pm callbacks in virtio ccw

 - replace kmalloc + memset with kzalloc in crypto

 - use $(LD) for vDSO linkage to make clang happy

 - fix vDSO clock_getres() to preserve the same behaviour as
   posix_get_hrtimer_res()

 - fix workqueue cpumask warning when NUMA=n and nr_node_ids=2

 - reduce SLSB writes during input processing, improve warnings and
   cleanup qdio_data usage in qdio

 - a few fixes to use scnprintf() instead of snprintf()

* tag 's390-5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390: fix syscall_get_error for compat processes
  s390/qdio: warn about unexpected SLSB states
  s390/qdio: clean up usage of qdio_data
  s390/numa: let NODES_SHIFT depend on NEED_MULTIPLE_NODES
  s390/vdso: fix vDSO clock_getres()
  s390/vdso: Use $(LD) instead of $(CC) to link vDSO
  s390/protvirt: use scnprintf() instead of snprintf()
  s390: use scnprintf() in sys_##_prefix##_##_name##_show
  s390/crypto: use scnprintf() instead of snprintf()
  s390/zcrypt: use kzalloc
  s390/virtio: remove unused pm callbacks
  s390/qdio: reduce SLSB writes during Input Queue processing
  selftests/seccomp: s390 shares the syscall and return value register
  s390/ptrace: fix setting syscall number
  s390/ptrace: pass invalid syscall numbers to tracing
  s390/ptrace: return -ENOSYS when invalid syscall is supplied
  s390/seccomp: pass syscall arguments via seccomp_data
  s390/qdio: fine-tune SLSB update
2020-06-20 12:31:08 -07:00
Linus Torvalds
7fdfbe08a2 RISC-V Fixes for 5.8-rc2
This contains three fixes that I'd like to target for rc2:
 
 * A workaround for a compiler surprise related to the "r" inline assembly that
   allows LLVM to boot.
 * A fix to avoid WX-only mappings, which the ISA does not allow.  While this
   probably manifests in many ways, the bug was found in stress-ng.
 * A missing lock in set_direct_map_*(), which due to a recent lockdep change
   started asserting.
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Merge tag 'riscv-for-linus-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:

 - a workaround for a compiler surprise related to the "r" inline
   assembly that allows LLVM to boot.

 - a fix to avoid WX-only mappings, which the ISA does not allow. While
   this probably manifests in many ways, the bug was found in stress-ng.

 - a missing lock in set_direct_map_*(), which due to a recent lockdep
   change started asserting.

* tag 'riscv-for-linus-5.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  RISC-V: Acquire mmap lock before invoking walk_page_range
  RISC-V: Don't allow write+exec only page mapping request in mmap
  riscv/atomic: Fix sign extension for RV64I
2020-06-20 12:14:29 -07:00