Commit Graph

810707 Commits

Author SHA1 Message Date
Jens Axboe
a39c330d74 Merge branch 'nvme-5.0' of git://git.infradead.org/nvme into for-linus
Pull NVMe fixes from Christoph.

* 'nvme-5.0' of git://git.infradead.org/nvme:
  nvme: don't initlialize ctrl->cntlid twice
  nvme: introduce NVME_QUIRK_IGNORE_DEV_SUBNQN
  nvme: pad fake subsys NQN vid and ssvid with zeros
  nvme-multipath: zero out ANA log buffer
  nvme-fabrics: unset write/poll queues for discovery controllers
  nvme-tcp: don't ask if controller is fabrics
  nvme-tcp: remove dead code
  nvme-pci: fix out of bounds access in nvme_cqe_pending
  nvme-pci: rerun irq setup on IO queue init errors
  nvme-pci: use the same attributes when freeing host_mem_desc_bufs.
  nvme-pci: fix the wrong setting of nr_maps
2019-01-10 15:29:57 -07:00
Linus Torvalds
de6629eb26 pci-v5.0-fixes-1
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Merge tag 'pci-v5.0-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fix from Bjorn Helgaas:
 "Fix Amlogic Meson host controller driver build failure (Corentin
  Labbe)"

* tag 'pci-v5.0-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: amlogic: Fix build failure due to missing gpio header
2019-01-10 14:16:47 -08:00
Heiner Kallweit
b19bce0335 net: ethernet: mediatek: fix warning in phy_start_aneg
linux 5.0-rc1 shows following warning on bpi-r2/mt7623 bootup:

[ 5.170597] WARNING: CPU: 3 PID: 1 at drivers/net/phy/phy.c:548 phy_start_aneg+0x110/0x144
[ 5.178826] called from state READY
....
[ 5.264111] [<c0629fd4>] (phy_start_aneg) from [<c0e3e720>] (mtk_init+0x414/0x47c)
[ 5.271630] r7:df5f5eec r6:c0f08c48 r5:00000000 r4:dea67800
[ 5.277256] [<c0e3e30c>] (mtk_init) from [<c07dabbc>] (register_netdevice+0x98/0x51c)
[ 5.285035] r8:00000000 r7:00000000 r6:c0f97080 r5:c0f08c48 r4:dea67800
[ 5.291693] [<c07dab24>] (register_netdevice) from [<c07db06c>] (register_netdev+0x2c/0x44)
[ 5.299989] r8:00000000 r7:dea2e608 r6:deacea00 r5:dea2e604 r4:dea67800
[ 5.306646] [<c07db040>] (register_netdev) from [<c06326d8>] (mtk_probe+0x668/0x7ac)
[ 5.314336] r5:dea2e604 r4:dea2e040
[ 5.317890] [<c0632070>] (mtk_probe) from [<c05a78fc>] (platform_drv_probe+0x58/0xa8)
[ 5.325670] r10:c0f86bac r9:00000000 r8:c0fbe578 r7:00000000 r6:c0f86bac r5:00000000
[ 5.333445] r4:deacea10
[ 5.335963] [<c05a78a4>] (platform_drv_probe) from [<c05a5248>] (really_probe+0x2d8/0x424)

maybe other boards using this generic driver are affected

v2:
optimization:

- phy_set_max_speed() is only needed if you want to reduce the
  max speed, typically if the PHY supports 1Gbps but the MAC
  supports 100Mbps only.

- The pause parameters are autonegotiated. Except you have a specific
  need you normally don't need to manually fiddle with this.

- phy_start_aneg() is called implicitly by the phylib state machine,
  you shouldn't call it manually except you have a good excuse.

- netif_carrier_on/netif_carrier_off in mtk_phy_link_adjust() isn't
  needed. It's done by phy_link_change() in phylib.

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Sean Wang <sean.wang@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-10 16:57:24 -05:00
Yuchung Cheng
c5715b8fab tcp: change txhash on SYN-data timeout
Previously upon SYN timeouts the sender recomputes the txhash to
try a different path. However this does not apply on the initial
timeout of SYN-data (active Fast Open). Therefore an active IPv6
Fast Open connection may incur one second RTO penalty to take on
a new path after the second SYN retransmission uses a new flow label.

This patch removes this undesirable behavior so Fast Open changes
the flow label just like the regular connections. This also helps
avoid falsely disabling Fast Open on the sender which triggers
after two consecutive SYN timeouts on Fast Open.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Reviewed-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-10 16:55:41 -05:00
Andrew Lunn
ea89098ef9 net: dsa: mv88x6xxx: mv88e6390 errata
The 6390 copper ports have an errata which require poking magic values
into undocumented magic registers and then performing a software
reset.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-10 16:53:46 -05:00
Willem de Bruijn
001e465f09 bonding: update nest level on unlink
A network device stack with multiple layers of bonding devices can
trigger a false positive lockdep warning. Adding lockdep nest levels
fixes this. Update the level on both enslave and unlink, to avoid the
following series of events ..

    ip netns add test
    ip netns exec test bash
    ip link set dev lo addr 00:11:22:33:44:55
    ip link set dev lo down

    ip link add dev bond1 type bond
    ip link add dev bond2 type bond

    ip link set dev lo master bond1
    ip link set dev bond1 master bond2

    ip link set dev bond1 nomaster
    ip link set dev bond2 master bond1

.. from still generating a splat:

    [  193.652127] ======================================================
    [  193.658231] WARNING: possible circular locking dependency detected
    [  193.664350] 4.20.0 #8 Not tainted
    [  193.668310] ------------------------------------------------------
    [  193.674417] ip/15577 is trying to acquire lock:
    [  193.678897] 00000000a40e3b69 (&(&bond->stats_lock)->rlock#3/3){+.+.}, at: bond_get_stats+0x58/0x290
    [  193.687851]
    	       but task is already holding lock:
    [  193.693625] 00000000807b9d9f (&(&bond->stats_lock)->rlock#2/2){+.+.}, at: bond_get_stats+0x58/0x290

    [..]

    [  193.851092]        lock_acquire+0xa7/0x190
    [  193.855138]        _raw_spin_lock_nested+0x2d/0x40
    [  193.859878]        bond_get_stats+0x58/0x290
    [  193.864093]        dev_get_stats+0x5a/0xc0
    [  193.868140]        bond_get_stats+0x105/0x290
    [  193.872444]        dev_get_stats+0x5a/0xc0
    [  193.876493]        rtnl_fill_stats+0x40/0x130
    [  193.880797]        rtnl_fill_ifinfo+0x6c5/0xdc0
    [  193.885271]        rtmsg_ifinfo_build_skb+0x86/0xe0
    [  193.890091]        rtnetlink_event+0x5b/0xa0
    [  193.894320]        raw_notifier_call_chain+0x43/0x60
    [  193.899225]        netdev_change_features+0x50/0xa0
    [  193.904044]        bond_compute_features.isra.46+0x1ab/0x270
    [  193.909640]        bond_enslave+0x141d/0x15b0
    [  193.913946]        do_set_master+0x89/0xa0
    [  193.918016]        do_setlink+0x37c/0xda0
    [  193.921980]        __rtnl_newlink+0x499/0x890
    [  193.926281]        rtnl_newlink+0x48/0x70
    [  193.930238]        rtnetlink_rcv_msg+0x171/0x4b0
    [  193.934801]        netlink_rcv_skb+0xd1/0x110
    [  193.939103]        rtnetlink_rcv+0x15/0x20
    [  193.943151]        netlink_unicast+0x3b5/0x520
    [  193.947544]        netlink_sendmsg+0x2fd/0x3f0
    [  193.951942]        sock_sendmsg+0x38/0x50
    [  193.955899]        ___sys_sendmsg+0x2ba/0x2d0
    [  193.960205]        __x64_sys_sendmsg+0xad/0x100
    [  193.964687]        do_syscall_64+0x5a/0x460
    [  193.968823]        entry_SYSCALL_64_after_hwframe+0x49/0xbe

Fixes: 7e2556e400 ("bonding: avoid lockdep confusion in bond_get_stats()")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-10 16:49:39 -05:00
Dave Airlie
f34c48e06d Merge branch 'drm-fixes-5.0' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
- Powerplay fixes
- Virtual display pinning fixes
- Golden register updates for vega
- Pitch and gem size validation fixes
- Fix for error case in sr-iov init
- Disable page tables in system memory on RV due to issues with IOMMU
  reported on some platforms

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190109204336.3315-1-alexander.deucher@amd.com
2019-01-11 07:38:56 +10:00
Linus Torvalds
4f548c25a3 RISC-V Updates for 4.21-rc2 v2
This tag contains a handful of updates that slipped through the cracks
 during the merge window due to the holidays.  The fixes are mostly
 independent, with the exception of one larger audit-related branch.
 There's more information about the audit branch in that merge, the rest
 are:
 
 * The BSS has been moved, which shrinks flat images.
 * A fix to test-bpf so it compiles on RV64I-based systems.
 * A fix to respect the kernel commandline when there is no device tree.
 * A fix to prevent CPUs from trying to put themselves to sleep when
   bringing down the system.
 * Support for MODULE_SECTIONS on RV32I-based systems.
 * [new in v2] The addition of an SBI earlycon driver.  This is
   definately a new feature, but I'd like to include it now because I
   dropped this patch when submitting the merge window PR that removed our
   EARLY_PRINTK support.
 
 As usual, I've tested this by booting a Fedora-based image on a recent
 QEMU (this time just whatever I had lying around).
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Merge tag 'riscv-for-linus-4.21-rc2-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux

Pull RISC-V updates from Palmer Dabbelt:
 "This tag contains a handful of updates that slipped through the cracks
  during the merge window due to the holidays. The fixes are mostly
  independent, with the exception of one larger audit-related branch.

  Core RISC-V updates:

   - The BSS has been moved, which shrinks flat images.

   - A fix to test-bpf so it compiles on RV64I-based systems.

   - A fix to respect the kernel commandline when there is no device
     tree.

   - A fix to prevent CPUs from trying to put themselves to sleep when
     bringing down the system.

   - Support for MODULE_SECTIONS on RV32I-based systems.

   - [new in v2] The addition of an SBI earlycon driver. This is
     definately a new feature, but I'd like to include it now because I
     dropped this patch when submitting the merge window PR that removed
     our EARLY_PRINTK support.

  RISC-V audit updates:

   - The addition of NR_syscalls into unistd.h, which is necessary for
     CONFIG_FTRACE_SYSCALLS.

   - The definition of CREATE_TRACE_POINTS so __tracepoint_sys_{enter,exit}
     get defined.

   - A fix for trace_sys_exit() so we can enable HAVE_SYSCALL_TRACEPOINTS

  As usual, I've tested this by booting a Fedora-based image on a recent
  QEMU (this time just whatever I had lying around).

* tag 'riscv-for-linus-4.21-rc2-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
  tty/serial: Add RISC-V SBI earlycon support
  riscv: add HAVE_SYSCALL_TRACEPOINTS to Kconfig
  riscv: fix trace_sys_exit hook
  riscv: define CREATE_TRACE_POINTS in ptrace.c
  riscv: define NR_syscalls in unistd.h
  riscv: audit: add audit hook in do_syscall_trace_enter/exit()
  riscv: add audit support
  RISC-V: Support MODULE_SECTIONS mechanism on RV32
  MAINTAINERS: SiFive drivers: add myself as a SiFive driver maintainer
  MAINTAINERS: SiFive drivers: change the git tree to a SiFive git tree
  riscv: don't stop itself in smp_send_stop
  arch: riscv: support kernel command line forcing when no DTB passed
  tools uapi: fix RISC-V 64-bit support
  RISC-V: Make BSS section as the last section in vmlinux.lds.S
2019-01-10 13:36:53 -08:00
Dave Airlie
bd86c9e66c Pull request for drm-misc-fixes for v5.0-rc2:
- Fixes for the tc358767 bridge to work correctly with
   tc358867 using a DP connector.
 - Make resume work on amdgpu when a DP-MST display is unplugged.
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Merge tag 'drm-misc-fixes-2019-01-10' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

Pull request for drm-misc-fixes for v5.0-rc2:
- Fixes for the tc358767 bridge to work correctly with
  tc358867 using a DP connector.
- Make resume work on amdgpu when a DP-MST display is unplugged.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1c47722d-c416-184d-4340-0dc6a614d685@linux.intel.com
2019-01-11 06:32:44 +10:00
Pavel Shilovsky
8544f4aa9d CIFS: Fix credit computation for compounded requests
In SMB3 protocol every part of the compound chain consumes credits
individually, so we need to call wait_for_free_credits() for each
of the PDUs in the chain. If an operation is interrupted, we must
ensure we return all credits taken from the server structure back.

Without this patch server can sometimes disconnect the session
due to credit mismatches, especially when first operation(s)
are large writes.

Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Stable <stable@vger.kernel.org>
2019-01-10 14:32:38 -06:00
Pavel Shilovsky
33fa5c8b8a CIFS: Do not set credits to 1 if the server didn't grant anything
Currently we reset the number of total credits granted by the server
to 1 if the server didn't grant us anything int the response. This
violates the SMB3 protocol - we need to trust the server and use
the credit values from the response. Fix this by removing the
corresponding code.

Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Stable <stable@vger.kernel.org>
2019-01-10 14:32:36 -06:00
Pavel Shilovsky
b983f7e923 CIFS: Fix adjustment of credits for MTU requests
Currently for MTU requests we allocate maximum possible credits
in advance and then adjust them according to the request size.
While we were adjusting the number of credits belonging to the
server, we were skipping adjustment of credits belonging to the
request. This patch fixes it by setting request credits to
CreditCharge field value of SMB2 packet header.

Also ask 1 credit more for async read and write operations to
increase parallelism and match the behavior of other operations.

Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Stable <stable@vger.kernel.org>
2019-01-10 14:32:32 -06:00
Dan Carpenter
c715f89c4d cifs: Fix a tiny potential memory leak
The most recent "it" allocation is leaked on this error path.  I
believe that small allocations always succeed in current kernels so
this doesn't really affect run time.

Fixes: 54be1f6c1c ("cifs: Add DFS cache routines")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2019-01-10 14:32:30 -06:00
Dan Carpenter
8428817dc4 cifs: Fix a debug message
This debug message was never shown because it was checking for NULL
returns but extract_hostname() returns error pointers.

Fixes: 93d5cb517d ("cifs: Add support for failover in cifs_reconnect()")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Paulo Alcantara <palcantara@suse.de>
2019-01-10 14:32:27 -06:00
Will Deacon
b89d82ef01 arm64: kpti: Avoid rewriting early page tables when KASLR is enabled
A side effect of commit c55191e96c ("arm64: mm: apply r/o permissions
of VM areas to its linear alias as well") is that the linear map is
created with page granularity, which means that transitioning the early
page table from global to non-global mappings when enabling kpti can
take a significant amount of time during boot.

Given that most CPU implementations do not require kpti, this mainly
impacts KASLR builds where kpti is forcefully enabled. However, in these
situations we know early on that non-global mappings are required and
can avoid the use of global mappings from the beginning. The only gotcha
is Cavium erratum #27456, which we must detect based on the MIDR value
of the boot CPU.

Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reported-by: John Garry <john.garry@huawei.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-01-10 17:49:35 +00:00
Linus Torvalds
1bdbe22749 VFIO fixes for v5.0-rc2
- Fix trace header include path for in-tree builds (Masahiro Yamada)
 
  - Fix overflow in unmap wrap-around test (Alex Williamson)
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Merge tag 'vfio-v5.0-rc2' of git://github.com/awilliam/linux-vfio

Pull VFIO fixes from Alex Williamson:

 - Fix trace header include path for in-tree builds (Masahiro Yamada)

 - Fix overflow in unmap wrap-around test (Alex Williamson)

* tag 'vfio-v5.0-rc2' of git://github.com/awilliam/linux-vfio:
  vfio/type1: Fix unmap overflow off-by-one
  vfio/pci: set TRACE_INCLUDE_PATH to fix the build error
2019-01-10 09:20:46 -08:00
Linus Torvalds
f0ebbe9b18 sound fixes for 5.0-rc2
A collection of small fixes for USB-audio, HD-audio and cs46xx.
 The USB-audio fixes are for out-of-bound accesses and a regression
 in the recent cleanup, while HD-audio fixes are usual device-
 specific quirks.
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Merge tag 'sound-5.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A collection of small fixes for USB-audio, HD-audio and cs46xx.

  The USB-audio fixes are for out-of-bound accesses and a regression in
  the recent cleanup, while HD-audio fixes are usual device-specific
  quirks"

* tag 'sound-5.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/realtek - Disable headset Mic VREF for headset mode of ALC225
  ALSA: hda/realtek - Add unplug function into unplug state of Headset Mode for ALC225
  ALSA: usb-audio: fix CM6206 register definitions
  ALSA: cs46xx: Potential NULL dereference in probe
  ALSA: hda/realtek - Support Dell headset mode for New AIO platform
  ALSA: usb-audio: Fix an out-of-bound read in create_composite_quirks
  ALSA: usb-audio: Always check descriptor sizes in parser code
  ALSA: usb-audio: Check mixer unit descriptors more strictly
  ALSA: usb-audio: Avoid access before bLength check in build_audio_procunit()
2019-01-10 09:17:48 -08:00
Linus Torvalds
e7446be446 MTD Fixes:
- Fix a bug introduced when exposing MTD devs as NVMEM providers and
   check for add_mtd_device() return code everywhere
 
 raw NAND fixes:
 - Fix a memory corruption in the QCOM driver
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Merge tag 'mtd/fixes-for-5.0-rc2' of git://git.infradead.org/linux-mtd

Pull mtd fixes from Boris Brezillon:
 "Core MTD Fixes:

   - Fix a bug introduced when exposing MTD devs as NVMEM providers and
     check for add_mtd_device() return code everywhere

  raw NAND fixes:

   - Fix a memory corruption in the QCOM driver"

* tag 'mtd/fixes-for-5.0-rc2' of git://git.infradead.org/linux-mtd:
  mtd: rawnand: qcom: fix memory corruption that causes panic
  mtd: Check add_mtd_device() ret code
  mtd: Fix the check on nvmem_register() ret code
2019-01-10 09:14:12 -08:00
Qu Wenruo
1b3922a8bc btrfs: Use real device structure to verify dev extent
[BUG]
Linux v5.0-rc1 will fail fstests/btrfs/163 with the following kernel
message:

  BTRFS error (device dm-6): dev extent devid 1 physical offset 13631488 len 8388608 is beyond device boundary 0
  BTRFS error (device dm-6): failed to verify dev extents against chunks: -117
  BTRFS error (device dm-6): open_ctree failed

[CAUSE]
Commit cf90d884b3 ("btrfs: Introduce mount time chunk <-> dev extent
mapping check") introduced strict check on dev extents.

We use btrfs_find_device() with dev uuid and fs uuid set to NULL, and
only dependent on @devid to find the real device.

For seed devices, we call clone_fs_devices() in open_seed_devices() to
allow us search seed devices directly.

However clone_fs_devices() just populates devices with devid and dev
uuid, without populating other essential members, like disk_total_bytes.

This makes any device returned by btrfs_find_device(fs_info, devid,
NULL, NULL) is just a dummy, with 0 disk_total_bytes, and any dev
extents on the seed device will not pass the device boundary check.

[FIX]
This patch will try to verify the device returned by btrfs_find_device()
and if it's a dummy then re-search in seed devices.

Fixes: cf90d884b3 ("btrfs: Introduce mount time chunk <-> dev extent mapping check")
CC: stable@vger.kernel.org # 4.19+
Reported-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2019-01-10 17:13:00 +01:00
Song Liu
beaf3d1901 bpf: fix panic in stack_map_get_build_id() on i386 and arm32
As Naresh reported, test_stacktrace_build_id() causes panic on i386 and
arm32 systems. This is caused by page_address() returns NULL in certain
cases.

This patch fixes this error by using kmap_atomic/kunmap_atomic instead
of page_address.

Fixes: 615755a77b (" bpf: extend stackmap to save binary_build_id+offset instead of address")
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-01-10 16:02:17 +01:00
Anders Roxell
f98937c6bb selftests: bpf: install files tcp_(server|client)*.py
When test_tcpbpf_user runs it complains that it can't find files
tcp_server.py and tcp_client.py.

Rework so that tcp_server.py and tcp_client.py gets installed, added them
to the variable TEST_PROGS_EXTENDED.

Fixes: d6d4f60c3a ("bpf: add selftest for tcpbpf")
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-01-10 15:56:52 +01:00
Nicholas Mc Guire
df209c43a0 gpio: pl061: handle failed allocations
devm_kzalloc(), devm_kstrdup() and devm_kasprintf() all can
fail internal allocation and return NULL. Using any of the assigned
objects without checking is not safe. As this is early in the boot
phase and these allocations really should not fail, any failure here
is probably an indication of a more serious issue so it makes little
sense to try and rollback the previous allocated resources or try to
continue;  but rather the probe function is simply exited with -ENOMEM.

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Fixes: 684284b64a ("ARM: integrator: add MMCI device to IM-PD1")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2019-01-10 15:54:50 +01:00
Ioana Ciornei
11b36abc24 samples: bpf: user proper argument index
Use optind as index for argv instead of a hardcoded value.
When the program has options this leads to improper parameter handling.

Fixes: dc378a1ab5 ("samples: bpf: get ifindex from ifname")
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Acked-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-01-10 15:54:47 +01:00
Stanislav Fomichev
e3ca63de8a selftests/bpf: add missing executables to .gitignore
We build test_libbpf with CXX to make sure linking against C++ works.

$ make -s -C tools/lib/bpf
$ git status -sb
? tools/lib/bpf/test_libbpf
$ make -s -C tools/testing/selftests/bpf
$ git status -sb
? tools/lib/bpf/test_libbpf
? tools/testing/selftests/bpf/test_libbpf

Fixes: 8c4905b995 ("libbpf: make sure bpf headers are c++ include-able")
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-01-10 15:53:02 +01:00
Eric Dumazet
7d033c9f6a ipv6: fix kernel-infoleak in ipv6_local_error()
This patch makes sure the flow label in the IPv6 header
forged in ipv6_local_error() is initialized.

BUG: KMSAN: kernel-infoleak in _copy_to_user+0x16b/0x1f0 lib/usercopy.c:32
CPU: 1 PID: 24675 Comm: syz-executor1 Not tainted 4.20.0-rc7+ #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x173/0x1d0 lib/dump_stack.c:113
 kmsan_report+0x12e/0x2a0 mm/kmsan/kmsan.c:613
 kmsan_internal_check_memory+0x455/0xb00 mm/kmsan/kmsan.c:675
 kmsan_copy_to_user+0xab/0xc0 mm/kmsan/kmsan_hooks.c:601
 _copy_to_user+0x16b/0x1f0 lib/usercopy.c:32
 copy_to_user include/linux/uaccess.h:177 [inline]
 move_addr_to_user+0x2e9/0x4f0 net/socket.c:227
 ___sys_recvmsg+0x5d7/0x1140 net/socket.c:2284
 __sys_recvmsg net/socket.c:2327 [inline]
 __do_sys_recvmsg net/socket.c:2337 [inline]
 __se_sys_recvmsg+0x2fa/0x450 net/socket.c:2334
 __x64_sys_recvmsg+0x4a/0x70 net/socket.c:2334
 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x457ec9
Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f8750c06c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9
RDX: 0000000000002000 RSI: 0000000020000400 RDI: 0000000000000005
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8750c076d4
R13: 00000000004c4a60 R14: 00000000004d8140 R15: 00000000ffffffff

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:204 [inline]
 kmsan_save_stack mm/kmsan/kmsan.c:219 [inline]
 kmsan_internal_chain_origin+0x134/0x230 mm/kmsan/kmsan.c:439
 __msan_chain_origin+0x70/0xe0 mm/kmsan/kmsan_instr.c:200
 ipv6_recv_error+0x1e3f/0x1eb0 net/ipv6/datagram.c:475
 udpv6_recvmsg+0x398/0x2ab0 net/ipv6/udp.c:335
 inet_recvmsg+0x4fb/0x600 net/ipv4/af_inet.c:830
 sock_recvmsg_nosec net/socket.c:794 [inline]
 sock_recvmsg+0x1d1/0x230 net/socket.c:801
 ___sys_recvmsg+0x4d5/0x1140 net/socket.c:2278
 __sys_recvmsg net/socket.c:2327 [inline]
 __do_sys_recvmsg net/socket.c:2337 [inline]
 __se_sys_recvmsg+0x2fa/0x450 net/socket.c:2334
 __x64_sys_recvmsg+0x4a/0x70 net/socket.c:2334
 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7

Uninit was created at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:204 [inline]
 kmsan_internal_poison_shadow+0x92/0x150 mm/kmsan/kmsan.c:158
 kmsan_kmalloc+0xa6/0x130 mm/kmsan/kmsan_hooks.c:176
 kmsan_slab_alloc+0xe/0x10 mm/kmsan/kmsan_hooks.c:185
 slab_post_alloc_hook mm/slab.h:446 [inline]
 slab_alloc_node mm/slub.c:2759 [inline]
 __kmalloc_node_track_caller+0xe18/0x1030 mm/slub.c:4383
 __kmalloc_reserve net/core/skbuff.c:137 [inline]
 __alloc_skb+0x309/0xa20 net/core/skbuff.c:205
 alloc_skb include/linux/skbuff.h:998 [inline]
 ipv6_local_error+0x1a7/0x9e0 net/ipv6/datagram.c:334
 __ip6_append_data+0x129f/0x4fd0 net/ipv6/ip6_output.c:1311
 ip6_make_skb+0x6cc/0xcf0 net/ipv6/ip6_output.c:1775
 udpv6_sendmsg+0x3f8e/0x45d0 net/ipv6/udp.c:1384
 inet_sendmsg+0x54a/0x720 net/ipv4/af_inet.c:798
 sock_sendmsg_nosec net/socket.c:621 [inline]
 sock_sendmsg net/socket.c:631 [inline]
 __sys_sendto+0x8c4/0xac0 net/socket.c:1788
 __do_sys_sendto net/socket.c:1800 [inline]
 __se_sys_sendto+0x107/0x130 net/socket.c:1796
 __x64_sys_sendto+0x6e/0x90 net/socket.c:1796
 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7

Bytes 4-7 of 28 are uninitialized
Memory access of size 28 starts at ffff8881937bfce0
Data copied to user address 0000000020000000

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-10 09:36:41 -05:00
Konstantin Khlebnikov
85704cb8dc net/core/neighbour: tell kmemleak about hash tables
This fixes false-positive kmemleak reports about leaked neighbour entries:

unreferenced object 0xffff8885c6e4d0a8 (size 1024):
  comm "softirq", pid 0, jiffies 4294922664 (age 167640.804s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 20 2c f3 83 ff ff ff ff  ........ ,......
    08 c0 ef 5f 84 88 ff ff 01 8c 7d 02 01 00 00 00  ..._......}.....
  backtrace:
    [<00000000748509fe>] ip6_finish_output2+0x887/0x1e40
    [<0000000036d7a0d8>] ip6_output+0x1ba/0x600
    [<0000000027ea7dba>] ip6_send_skb+0x92/0x2f0
    [<00000000d6e2111d>] udp_v6_send_skb.isra.24+0x680/0x15e0
    [<000000000668a8be>] udpv6_sendmsg+0x18c9/0x27a0
    [<000000004bd5fa90>] sock_sendmsg+0xb3/0xf0
    [<000000008227b29f>] ___sys_sendmsg+0x745/0x8f0
    [<000000008698009d>] __sys_sendmsg+0xde/0x170
    [<00000000889dacf1>] do_syscall_64+0x9b/0x400
    [<0000000081cdb353>] entry_SYSCALL_64_after_hwframe+0x49/0xbe
    [<000000005767ed39>] 0xffffffffffffffff

Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-10 09:34:51 -05:00
Colin Ian King
fd21c89b87 net: cxgb4: fix various indentation issues
There are some lines that have indentation issues, fix these.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-10 09:30:49 -05:00
Colin Ian King
2acc0abc88 net: cxgb3: fix various indentation issues
There are handful of lines that have indentation issues, fix these.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-10 09:30:08 -05:00
Willem de Bruijn
4a06fa67c4 ip: on queued skb use skb_header_pointer instead of pskb_may_pull
Commit 2efd4fca70 ("ip: in cmsg IP(V6)_ORIGDSTADDR call
pskb_may_pull") avoided a read beyond the end of the skb linear
segment by calling pskb_may_pull.

That function can trigger a BUG_ON in pskb_expand_head if the skb is
shared, which it is when when peeking. It can also return ENOMEM.

Avoid both by switching to safer skb_header_pointer.

Fixes: 2efd4fca70 ("ip: in cmsg IP(V6)_ORIGDSTADDR call pskb_may_pull")
Reported-by: syzbot <syzkaller@googlegroups.com>
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-10 09:27:20 -05:00
Stanislav Fomichev
0b7959b625 tun: publish tfile after it's fully initialized
BUG: unable to handle kernel NULL pointer dereference at 00000000000000d1
Call Trace:
 ? napi_gro_frags+0xa7/0x2c0
 tun_get_user+0xb50/0xf20
 tun_chr_write_iter+0x53/0x70
 new_sync_write+0xff/0x160
 vfs_write+0x191/0x1e0
 __x64_sys_write+0x5e/0xd0
 do_syscall_64+0x47/0xf0
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

I think there is a subtle race between sending a packet via tap and
attaching it:

CPU0:                    CPU1:
tun_chr_ioctl(TUNSETIFF)
  tun_set_iff
    tun_attach
      rcu_assign_pointer(tfile->tun, tun);
                         tun_fops->write_iter()
                           tun_chr_write_iter
                             tun_napi_alloc_frags
                               napi_get_frags
                                 napi->skb = napi_alloc_skb
      tun_napi_init
        netif_napi_add
          napi->skb = NULL
                              napi->skb is NULL here
                              napi_gro_frags
                                napi_frags_skb
				  skb = napi->skb
				  skb_reset_mac_header(skb)
				  panic()

Move rcu_assign_pointer(tfile->tun) and rcu_assign_pointer(tun->tfiles) to
be the last thing we do in tun_attach(); this should guarantee that when we
call tun_get() we always get an initialized object.

v2 changes:
* remove extra napi_mutex locks/unlocks for napi operations

Reported-by: syzbot <syzkaller@googlegroups.com>
Fixes: 90e33d4594 ("tun: enable napi_gro_frags() for TUN/TAP driver")

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-10 09:24:38 -05:00
Ravi Bangoria
15c03092a9 tools headers powerpc: Remove unistd.h
We use syscall.tbl to generate system call table on powerpc.

The unistd.h copy is no longer required now. Remove it.

Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/20190110094936.3132-2-ravi.bangoria@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-10 10:42:08 -03:00
Ravi Bangoria
0206131811 perf powerpc: Rework syscall table generation
Commit aff8503932 ("powerpc: add system call table generation
support") changed how systemcall table is generated for powerpc.
Incorporate these changes into perf as well.

Committer testing:

  $ podman run --entrypoint=/bin/sh --privileged -v /home/acme/git:/git --rm -ti docker.io/acmel/linux-perf-tools-build-ubuntu:18.04-x-powerpc64
  perfbuilder@d7a7af166a80:/git/perf$ head -2 /etc/os-release
  NAME="Ubuntu"
  VERSION="18.04.1 LTS (Bionic Beaver)"
  perfbuilder@d7a7af166a80:/git/perf$
  perfbuilder@d7a7af166a80:/git/perf$ make ARCH=powerpc CROSS_COMPILE=powerpc64-linux-gnu- EXTRA_CFLAGS= -C /git/linux/tools/perf O=/tmp/build/perf
  make: Entering directory '/git/linux/tools/perf'
    BUILD:   Doing 'make -j8' parallel build
    HOSTCC   /tmp/build/perf/fixdep.o
    HOSTLD   /tmp/build/perf/fixdep-in.o
    LINK     /tmp/build/perf/fixdep
  Warning: Kernel ABI header at 'tools/include/uapi/linux/mman.h' differs from latest version at 'include/uapi/linux/mman.h'
  diff -u tools/include/uapi/linux/mman.h include/uapi/linux/mman.h
  sh: 1: command: Illegal option -c

  Auto-detecting system features:
  ...                         dwarf: [ on  ]
  ...            dwarf_getlocations: [ on  ]
  ...                         glibc: [ on  ]
  ...                          gtk2: [ OFF ]
  ...                      libaudit: [ OFF ]
  ...                        libbfd: [ OFF ]
  ...                        libelf: [ on  ]
  ...                       libnuma: [ OFF ]
  ...        numa_num_possible_cpus: [ OFF ]
  ...                       libperl: [ OFF ]
  ...                     libpython: [ OFF ]
  ...                      libslang: [ OFF ]
  ...                     libcrypto: [ OFF ]
  ...                     libunwind: [ OFF ]
  ...            libdw-dwarf-unwind: [ on  ]
  ...                          zlib: [ on  ]
  ...                          lzma: [ OFF ]
  ...                     get_cpuid: [ OFF ]
  ...                           bpf: [ on  ]

  Makefile.config:445: No sys/sdt.h found, no SDT events are defined, please install systemtap-sdt-devel or systemtap-sdt-dev
  Makefile.config:491: No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR
  Makefile.config:583: No libcrypto.h found, disables jitted code injection, please install libssl-devel or libssl-dev
  Makefile.config:598: slang not found, disables TUI support. Please install slang-devel, libslang-dev or libslang2-dev
  Makefile.config:612: GTK2 not found, disables GTK2 support. Please install gtk2-devel or libgtk2.0-dev
  Makefile.config:639: Missing perl devel files. Disabling perl scripting support, please install perl-ExtUtils-Embed/libperl-dev
  Makefile.config:666: No python interpreter was found: disables Python support - please install python-devel/python-dev
  Makefile.config:721: No bfd.h/libbfd found, please install binutils-dev[el]/zlib-static/libiberty-dev to gain symbol demangling
  Makefile.config:750: No liblzma found, disables xz kernel module decompression, please install xz-devel/liblzma-dev
  Makefile.config:763: No numa.h found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev
  Makefile.config:814: No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev
  Makefile.config:840: No alternatives command found, you need to set JDIR= to point to the root of your Java directory
    GEN      /tmp/build/perf/common-cmds.h
  <SNIP>
    CC       /tmp/build/perf/util/syscalltbl.o
  <SNIP>
    LD       /tmp/build/perf/libperf-in.o
    AR       /tmp/build/perf/libperf.a
    LINK     /tmp/build/perf/perf
  make: Leaving directory '/git/linux/tools/perf'
  perfbuilder@d7a7af166a80:/git/perf$ head /tmp/build/perf/arch/powerpc/include/generated/asm/syscalls_64.c
  static const char *syscalltbl_powerpc_64[] = {
  	[0] = "restart_syscall",
  	[1] = "exit",
  	[2] = "fork",
  	[3] = "read",
  	[4] = "write",
  	[5] = "open",
  	[6] = "close",
  	[7] = "waitpid",
  	[8] = "creat",
  perfbuilder@d7a7af166a80:/git/perf$ tail /tmp/build/perf/arch/powerpc/include/generated/asm/syscalls_64.c
  	[381] = "pwritev2",
  	[382] = "kexec_file_load",
  	[383] = "statx",
  	[384] = "pkey_alloc",
  	[385] = "pkey_free",
  	[386] = "pkey_mprotect",
  	[387] = "rseq",
  	[388] = "io_pgetevents",
  };
  #define SYSCALLTBL_POWERPC_64_MAX_ID 388
  perfbuilder@d7a7af166a80:/git/perf$ head /tmp/build/perf/arch/powerpc/include/generated/asm/syscalls_32.c
  static const char *syscalltbl_powerpc_32[] = {
  	[0] = "restart_syscall",
  	[1] = "exit",
  	[2] = "fork",
  	[3] = "read",
  	[4] = "write",
  	[5] = "open",
  	[6] = "close",
  	[7] = "waitpid",
  	[8] = "creat",
  perfbuilder@d7a7af166a80:/git/perf$ tail /tmp/build/perf/arch/powerpc/include/generated/asm/syscalls_32.c
  	[381] = "pwritev2",
  	[382] = "kexec_file_load",
  	[383] = "statx",
  	[384] = "pkey_alloc",
  	[385] = "pkey_free",
  	[386] = "pkey_mprotect",
  	[387] = "rseq",
  	[388] = "io_pgetevents",
  };
  #define SYSCALLTBL_POWERPC_32_MAX_ID 388
  perfbuilder@d7a7af166a80:/git/perf$

Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/20190110094936.3132-1-ravi.bangoria@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-01-10 10:34:52 -03:00
José Roberto de Souza
f299e0bdba drm: Fix documentation generation for DP_DPCD_QUIRK_NO_PSR
The DP_DPCD_QUIRK_NO_PSR comment is missing colon causing this
warning when generating kernel documentation.

./include/drm/drm_dp_helper.h:1374: warning: Incorrect use of kernel-doc format:          * @DP_DPCD_QUIRK_NO_PSR

Fixes: 1035f4a65f ("drm/i915: Disable PSR in Apple panels")
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181205184850.13218-1-jose.souza@intel.com
(cherry picked from commit ed17b55530)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2019-01-10 15:12:48 +02:00
Daniele Ceraolo Spurio
70e31424ea drm/i915: init per-engine WAs for all engines
commit 4a15c75c42 ("drm/i915: Introduce per-engine workarounds")
refactored the workaround code to have functions per-engine, but didn't
call any of them from logical_xcs_ring_init. Since we do have a non-RCS
workaround for KBL (WaKBLVECSSemaphoreWaitPoll) we do need to call
intel_engine_init_workarounds for non-RCS engines.
Note that whitelist is still RCS-only.

v2: move the call to logical_ring_init (Chris)

Fixes: 4a15c75c42 ("drm/i915: Introduce per-engine workarounds")
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190110013232.8972-2-daniele.ceraolospurio@intel.com
(cherry picked from commit a60acb223f)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2019-01-10 15:09:56 +02:00
Chris Wilson
280d479b31 drm/i915: Unwind failure on pinning the gen7 ppgtt
If we fail to pin the ggtt vma slot for the ppgtt page tables, we need
to unwind the locals before reporting the error. Or else on subsequent
attempts to bind the page tables into the ggtt, we will already believe
that the vma has been pinned and continue on blithely. If something else
should happen to be at that location, choas ensues.

Fixes: a2bbf71483 ("drm/i915/gtt: Only keep gen6 page directories pinned while active")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Matthew Auld <matthew.william.auld@gmail.com>
Cc: <stable@vger.kernel.org> # v4.19+
Reviewed-by: Matthew Auld <matthew.william.auld@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181222030623.21710-1-chris@chris-wilson.co.uk
(cherry picked from commit d4de753526)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2019-01-10 15:09:51 +02:00
Chris Wilson
107c595c2a drm/i915: Skip the ERR_PTR error state
Although commit fb6f0b64e4 ("drm/i915: Prevent machine hang from
Broxton's vtd w/a and error capture") applied cleanly after a 24 month
hiatus, the code had moved on with new methods for peeking and fetching
the captured gpu info. Make sure we catch all uses of the stashed error
state and avoid dereferencing the error pointer.

v2: Move error pointer determination into i915_gpu_capture_state
v3: Restore early check to avoid capturing and then throwing away
subsequent GPU error states.

Fixes: fb6f0b64e4 ("drm/i915: Prevent machine hang from Broxton's vtd w/a and error capture")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181207110554.19897-1-chris@chris-wilson.co.uk
(cherry picked from commit e6154e4cb8)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2019-01-10 15:09:41 +02:00
José Roberto de Souza
1035f4a65f drm/i915: Disable PSR in Apple panels
i915 yet don't support PSR in Apple panels, so lets keep it disabled
while we work on that.

v2: Renamed DP_DPCD_QUIRK_PSR_NOT_CURRENTLY_SUPPORTED to
DP_DPCD_QUIRK_NO_PSR (Ville)

v3:
Adding documentation to DP_DPCD_QUIRK_NO_PSR(Dhinakaran and Jani)
Fixed typo in comment of the new quirk entry(Jani)

Fixes: 598c6cfe06 (drm/i915/psr: Enable PSR1 on gen-9+ HW)
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181204003403.23361-1-jose.souza@intel.com
(cherry picked from commit 7c5c641a93)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2019-01-10 15:09:35 +02:00
Jani Nikula
038a0a8d29 Merge tag 'gvt-fixes-2019-01-09' of https://github.com/intel/gvt-linux into drm-intel-fixes
gvt-fixes-2019-01-09

- Fix one race issue between pre-scan of guest workload with submission

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
From: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190109050151.GL11631@zhen-hp.sh.intel.com
2019-01-10 15:02:03 +02:00
Guo Ren
70c2525953 csky: fixup compile error with CPU 810.
This bug is from commit f553aa1c13 ("csky: fixup relocation error with
807 & 860").

I forgot to compile with 810 for that patch.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-01-10 04:37:37 -08:00
Linus Walleij
b5f034845e ARM: dts: kirkwood: Fix polarity of GPIO fan lines
These two lines are active high, not active low. The bug was
found when we changed the kernel to respect the polarity defined
in the device tree.

Fixes: 1b90e06b14 ("ARM: kirkwood: Use devicetree to define DNS-32[05] fan")
Cc: Jamie Lentin <jm@lentin.co.uk>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Gregory Clement <gregory.clement@bootlin.com>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Cc: Julien D'Ascenzio <jdascenzio@posteo.net>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Jamie Lentin <jm@lentin.co.uk>
Reported-by: Julien D'Ascenzio <jdascenzio@posteo.net>
Tested-by: Julien D'Ascenzio <jdascenzio@posteo.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
2019-01-10 12:23:47 +01:00
Baruch Siach
59c4dccbc3 arm64: dts: marvell: mcbin: fix PCIe reset signal
The MPP52 signal is on the seconds GPIO instance of CP0, which
corresponds to the &cp0_gpio2 handle.

Rename the property name to the standard '-gpios' suffix while at it.

Fixes: b83e1669ad ("arm64: dts: marvell: mcbin: add support for PCIe")
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
2019-01-10 12:20:32 +01:00
Heinrich Schuchardt
132ac39cff arm64: dts: marvell: armada-ap806: reserve PSCI area
The memory area [0x4000000-0x4200000[ is occupied by the PSCI firmware. Any
attempt to access it from Linux leads to an immediate crash.

So let's make the same memory reservation as the vendor kernel.

[gregory: added as comment that this region matches the mainline U-boot]
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
2019-01-10 12:16:33 +01:00
Will Deacon
d9ed41962e arm64: asm-prototypes: Fix fat-fingered typo in comment
Some of the right letters, not necessarily in the right order:

	CONFIG_MODEVERIONS -> CONFIG_MODVERSIONS

Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-01-10 11:11:46 +00:00
Sean Christopherson
ba42273131 mm/mmu_notifier: mm/rmap.c: Fix a mmu_notifier range bug in try_to_unmap_one
The conversion to use a structure for mmu_notifier_invalidate_range_*()
unintentionally changed the usage in try_to_unmap_one() to init the
'struct mmu_notifier_range' with vma->vm_start instead of @address,
i.e. it invalidates the wrong address range.  Revert to the correct
address range.

Manifests as KVM use-after-free WARNINGs and subsequent "BUG: Bad page
state in process X" errors when reclaiming from a KVM guest due to KVM
removing the wrong pages from its own mappings.

Reported-by: leozinho29_eu@hotmail.com
Reported-by: Mike Galbraith <efault@gmx.de>
Reported-and-tested-by: Adam Borowski <kilobyte@angband.pl>
Reviewed-by: Jérôme Glisse <jglisse@redhat.com>
Reviewed-by: Pankaj gupta <pagupta@redhat.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Ross Zwisler <zwisler@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Felix Kuehling <felix.kuehling@amd.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Fixes: ac46d4f3c4 ("mm/mmu_notifier: use structure for invalidate_range_start/end calls v2")
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-01-10 02:58:21 -08:00
Tetsuo Handa
4089e272ac gpu/drm: Fix lock held when returning to user space.
We need to call drm_modeset_acquire_fini() when drm_atomic_state_alloc()
failed or call drm_modeset_acquire_init() after drm_atomic_state_alloc()
succeeded.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: syzbot <syzbot+6ea337c427f5083ebdf2@syzkaller.appspotmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1547115571-21219-1-git-send-email-penguin-kernel@I-love.SAKURA.ne.jp
2019-01-10 11:31:58 +01:00
Vincent Guittot
ca27e4cd0b PM-runtime: Fix autosuspend_delay on 32bits arch
Cast autosuspend_delay to u64 to make sure that the full computation
of 'expires' or slack will be done in u64, even on 32bits arch.

Otherwise, any delay greater than 2^31 nsec can overflow if signed
32bits is used when converting delay from msec to nsec.

Fixes: 8234f6734c (PM-runtime: Switch autosuspend over to using hrtimers)
Reported-by: Tony Lindgren <tony@atomide.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-01-10 10:55:52 +01:00
Ladislav Michl
1f7b708156 PM-runtime: Fix 'jiffies' in comments after switch to hrtimers
PM-runtime now uses the hrtimers infrastructure for autosuspend, however
comments still reference 'jiffies'.

Fixes: 8234f6734c (PM-runtime: Switch autosuspend over to using hrtimers)
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-01-10 10:55:52 +01:00
Ilya Dryomov
85f5a4d666 rbd: don't return 0 on unmap if RBD_DEV_FLAG_REMOVING is set
There is a window between when RBD_DEV_FLAG_REMOVING is set and when
the device is removed from rbd_dev_list.  During this window, we set
"already" and return 0.

Returning 0 from write(2) can confuse userspace tools because
0 indicates that nothing was written.  In particular, "rbd unmap"
will retry the write multiple times a second:

  10:28:05.463299 write(4, "0", 1)        = 0
  10:28:05.463509 write(4, "0", 1)        = 0
  10:28:05.463720 write(4, "0", 1)        = 0
  10:28:05.463942 write(4, "0", 1)        = 0
  10:28:05.464155 write(4, "0", 1)        = 0

Cc: stable@vger.kernel.org
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Tested-by: Dongsheng Yang <dongsheng.yang@easystack.cn>
2019-01-10 09:45:09 +01:00
Peter Ujfalusi
c25748acc5 ARM: dts: da850-lcdk: Correct the sound card name
To avoid  the following error:
asoc-simple-card sound: ASoC: Failed to create card debugfs directory

Which is because the card name contains '/' character, which can not be
used in file or directory names.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-01-10 13:32:51 +05:30
Peter Ujfalusi
bd540ebe68 ARM: dts: da850-lcdk: Correct the audio codec regulators
Add the board level fixed regulators for 3.3V and 1.8V which is used to
power - among other things - the tlv320aic3106 codec.

Apart from removing the following warning during boot:
tlv320aic3x-codec 0-0018: Invalid supply voltage(s) AVDD: -22, DVDD: -22

With the correct voltages the driver can select correct OCMV value to
reduce pop noise.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
2019-01-10 13:32:51 +05:30