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Commit Graph

811088 Commits

Author SHA1 Message Date
Linus Torvalds
7d0ae236ed Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Fix endless loop in nf_tables, from Phil Sutter.

 2) Fix cross namespace ip6_gre tunnel hash list corruption, from
    Olivier Matz.

 3) Don't be too strict in phy_start_aneg() otherwise we might not allow
    restarting auto negotiation. From Heiner Kallweit.

 4) Fix various KMSAN uninitialized value cases in tipc, from Ying Xue.

 5) Memory leak in act_tunnel_key, from Davide Caratti.

 6) Handle chip errata of mv88e6390 PHY, from Andrew Lunn.

 7) Remove linear SKB assumption in fou/fou6, from Eric Dumazet.

 8) Missing udplite rehash callbacks, from Alexey Kodanev.

 9) Log dirty pages properly in vhost, from Jason Wang.

10) Use consume_skb() in neigh_probe() as this is a normal free not a
    drop, from Yang Wei. Likewise in macvlan_process_broadcast().

11) Missing device_del() in mdiobus_register() error paths, from Thomas
    Petazzoni.

12) Fix checksum handling of short packets in mlx5, from Cong Wang.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (96 commits)
  bpf: in __bpf_redirect_no_mac pull mac only if present
  virtio_net: bulk free tx skbs
  net: phy: phy driver features are mandatory
  isdn: avm: Fix string plus integer warning from Clang
  net/mlx5e: Fix cb_ident duplicate in indirect block register
  net/mlx5e: Fix wrong (zero) TX drop counter indication for representor
  net/mlx5e: Fix wrong error code return on FEC query failure
  net/mlx5e: Force CHECKSUM_UNNECESSARY for short ethernet frames
  tools: bpftool: Cleanup license mess
  bpf: fix inner map masking to prevent oob under speculation
  bpf: pull in pkt_sched.h header for tooling to fix bpftool build
  selftests: forwarding: Add a test case for externally learned FDB entries
  selftests: mlxsw: Test FDB offload indication
  mlxsw: spectrum_switchdev: Do not treat static FDB entries as sticky
  net: bridge: Mark FDB entries that were added by user as such
  mlxsw: spectrum_fid: Update dummy FID index
  mlxsw: pci: Return error on PCI reset timeout
  mlxsw: pci: Increase PCI SW reset timeout
  mlxsw: pci: Ring CQ's doorbell before RDQ's
  MAINTAINERS: update email addresses of liquidio driver maintainers
  ...
2019-01-21 12:52:31 +13:00
Kees Cook
5631e8576a pstore/ram: Avoid allocation and leak of platform data
Yue Hu noticed that when parsing device tree the allocated platform data
was never freed. Since it's not used beyond the function scope, this
switches to using a stack variable instead.

Reported-by: Yue Hu <huyue2@yulong.com>
Fixes: 35da60941e ("pstore/ram: add Device Tree bindings")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
2019-01-20 14:44:52 -08:00
Ard Biesheuvel
2c88c742d0 gcc-plugins: arm_ssp_per_task_plugin: fix for GCC 9+
GCC 9 reworks the way the references to the stack canary are
emitted, to prevent the value from being spilled to the stack
before the final comparison in the epilogue, defeating the
purpose, given that the spill slot is under control of the
attacker that we are protecting ourselves from.

Since our canary value address is obtained without accessing
memory (as opposed to pre-v7 code that will obtain it from a
literal pool), it is unlikely (although not guaranteed) that
the compiler will spill the canary value in the same way, so
let's just disable this improvement when building with GCC9+.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
2019-01-20 14:06:40 -08:00
Ard Biesheuvel
560706d5d2 gcc-plugins: arm_ssp_per_task_plugin: sign extend the SP mask
The ARM per-task stack protector GCC plugin hits an assert in
the compiler in some case, due to the fact the the SP mask
expression is not sign-extended as it should be. So fix that.

Suggested-by: Kugan Vivekanandarajah <kugan.vivekanandarajah@linaro.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
2019-01-20 14:06:40 -08:00
Linus Torvalds
bb617b9b45 virtio, vhost: fixes, cleanups
fixes and cleanups all over the place
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio/vhost fixes and cleanups from Michael Tsirkin:
 "Fixes and cleanups all over the place"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  vhost/scsi: Use copy_to_iter() to send control queue response
  vhost: return EINVAL if iovecs size does not match the message size
  virtio-balloon: tweak config_changed implementation
  virtio: don't allocate vqs when names[i] = NULL
  virtio_pci: use queue idx instead of array idx to set up the vq
  virtio: document virtio_config_ops restrictions
  virtio: fix virtio_config_ops description
2019-01-21 07:37:16 +13:00
Linus Torvalds
1be969f468 for-5.0-rc2-tag
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Merge tag 'for-5.0-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:
 "A handful of fixes (some of them in testing for a long time):

   - fix some test failures regarding cleanup after transaction abort

   - revert of a patch that could cause a deadlock

   - delayed iput fixes, that can help in ENOSPC situation when there's
     low space and a lot data to write"

* tag 'for-5.0-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: wakeup cleaner thread when adding delayed iput
  btrfs: run delayed iputs before committing
  btrfs: wait on ordered extents on abort cleanup
  btrfs: handle delayed ref head accounting cleanup in abort
  Revert "btrfs: balance dirty metadata pages in btrfs_finish_ordered_io"
2019-01-21 07:35:26 +13:00
Linus Torvalds
315a6d850a include/linux/compiler*.h changes:
- A fix for OPTIMIZER_HIDE_VAR
     From Michael S. Tsirkin
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mergetag object 99e309b6ed
 type commit
 tag clang-format-for-linus-v5.0-rc3
 tagger Miguel Ojeda <miguel.ojeda.sandonis@gmail.com> 1547999145 +0100
 
 clang-format changes:
 
   - Update of the for_each macro list
     From Jason Gunthorpe
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Merge tags 'compiler-attributes-for-linus-v5.0-rc3' and 'clang-format-for-linus-v5.0-rc3' of git://github.com/ojeda/linux

Pull misc clang fixes from Miguel Ojeda:

  - A fix for OPTIMIZER_HIDE_VAR from Michael S Tsirkin

  - Update clang-format with the latest for_each macro list from Jason
    Gunthorpe

* tag 'compiler-attributes-for-linus-v5.0-rc3' of git://github.com/ojeda/linux:
  include/linux/compiler*.h: fix OPTIMIZER_HIDE_VAR

* tag 'clang-format-for-linus-v5.0-rc3' of git://github.com/ojeda/linux:
  clang-format: Update .clang-format with the latest for_each macro list
2019-01-21 07:23:42 +13:00
Florian La Roche
fbfaf85190 fix int_sqrt64() for very large numbers
If an input number x for int_sqrt64() has the highest bit set, then
fls64(x) is 64.  (1UL << 64) is an overflow and breaks the algorithm.

Subtracting 1 is a better guess for the initial value of m anyway and
that's what also done in int_sqrt() implicitly [*].

[*] Note how int_sqrt() uses __fls() with two underscores, which already
    returns the proper raw bit number.

    In contrast, int_sqrt64() used fls64(), and that returns bit numbers
    illogically starting at 1, because of error handling for the "no
    bits set" case. Will points out that he bug probably is due to a
    copy-and-paste error from the regular int_sqrt() case.

Signed-off-by: Florian La Roche <Florian.LaRoche@googlemail.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-01-21 07:20:18 +13:00
Will Deacon
6e693b3ffe x86: uaccess: Inhibit speculation past access_ok() in user_access_begin()
Commit 594cc251fd ("make 'user_access_begin()' do 'access_ok()'")
makes the access_ok() check part of the user_access_begin() preceding a
series of 'unsafe' accesses.  This has the desirable effect of ensuring
that all 'unsafe' accesses have been range-checked, without having to
pick through all of the callsites to verify whether the appropriate
checking has been made.

However, the consolidated range check does not inhibit speculation, so
it is still up to the caller to ensure that they are not susceptible to
any speculative side-channel attacks for user addresses that ultimately
fail the access_ok() check.

This is an oversight, so use __uaccess_begin_nospec() to ensure that
speculation is inhibited until the access_ok() check has passed.

Reported-by: Julien Thierry <julien.thierry@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-01-20 15:33:22 +12:00
Linus Torvalds
b0f3e768a8 arm64 fixes for -rc3
- Fix broken kpti page-table rewrite in bizarre KASLR configuration
 
 - Fix module loading with KASLR
 
 - Remove redundant definition of ARCH_SLAB_MINALIGN
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "Three arm64 fixes for -rc3.

  We've plugged a couple of nasty issues involving KASLR-enabled
  kernels, and removed a redundant #define that was introduced as part
  of the KHWASAN fixes from akpm at -rc2.

   - Fix broken kpti page-table rewrite in bizarre KASLR configuration

   - Fix module loading with KASLR

   - Remove redundant definition of ARCH_SLAB_MINALIGN"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  kasan, arm64: remove redundant ARCH_SLAB_MINALIGN define
  arm64: kaslr: ensure randomized quantities are clean to the PoC
  arm64: kpti: Update arm64_kernel_use_ng_mappings() when forced on
2019-01-20 15:27:59 +12:00
David S. Miller
6436408e81 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says:

====================
pull-request: bpf 2019-01-20

The following pull-request contains BPF updates for your *net* tree.

The main changes are:

1) Fix a out-of-bounds access in __bpf_redirect_no_mac, from Willem.

2) Fix bpf_setsockopt to reset sock dst on SO_MARK changes, from Peter.

3) Fix map in map masking to prevent out-of-bounds access under
   speculative execution, from Daniel.

4) Fix bpf_setsockopt's SO_MAX_PACING_RATE to support TCP internal
   pacing, from Yuchung.

5) Fix json writer license in bpftool, from Thomas.

6) Fix AF_XDP to check if an actually queue exists during umem
   setup, from Krzysztof.

7) Several fixes to BPF stackmap's build id handling. Another fix
   for bpftool build to account for libbfd variations wrt linking
   requirements, from Stanislav.

8) Fix BPF samples build with clang by working around missing asm
   goto, from Yonghong.

9) Fix libbpf to retry program load on signal interrupt, from Lorenz.

10) Various minor compile warning fixes in BPF code, from Mathieu.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-19 16:38:12 -08:00
Willem de Bruijn
e7c87bd6cc bpf: in __bpf_redirect_no_mac pull mac only if present
Syzkaller was able to construct a packet of negative length by
redirecting from bpf_prog_test_run_skb with BPF_PROG_TYPE_LWT_XMIT:

    BUG: KASAN: slab-out-of-bounds in memcpy include/linux/string.h:345 [inline]
    BUG: KASAN: slab-out-of-bounds in skb_copy_from_linear_data include/linux/skbuff.h:3421 [inline]
    BUG: KASAN: slab-out-of-bounds in __pskb_copy_fclone+0x2dd/0xeb0 net/core/skbuff.c:1395
    Read of size 4294967282 at addr ffff8801d798009c by task syz-executor2/12942

    kasan_report.cold.9+0x242/0x309 mm/kasan/report.c:412
    check_memory_region_inline mm/kasan/kasan.c:260 [inline]
    check_memory_region+0x13e/0x1b0 mm/kasan/kasan.c:267
    memcpy+0x23/0x50 mm/kasan/kasan.c:302
    memcpy include/linux/string.h:345 [inline]
    skb_copy_from_linear_data include/linux/skbuff.h:3421 [inline]
    __pskb_copy_fclone+0x2dd/0xeb0 net/core/skbuff.c:1395
    __pskb_copy include/linux/skbuff.h:1053 [inline]
    pskb_copy include/linux/skbuff.h:2904 [inline]
    skb_realloc_headroom+0xe7/0x120 net/core/skbuff.c:1539
    ipip6_tunnel_xmit net/ipv6/sit.c:965 [inline]
    sit_tunnel_xmit+0xe1b/0x30d0 net/ipv6/sit.c:1029
    __netdev_start_xmit include/linux/netdevice.h:4325 [inline]
    netdev_start_xmit include/linux/netdevice.h:4334 [inline]
    xmit_one net/core/dev.c:3219 [inline]
    dev_hard_start_xmit+0x295/0xc90 net/core/dev.c:3235
    __dev_queue_xmit+0x2f0d/0x3950 net/core/dev.c:3805
    dev_queue_xmit+0x17/0x20 net/core/dev.c:3838
    __bpf_tx_skb net/core/filter.c:2016 [inline]
    __bpf_redirect_common net/core/filter.c:2054 [inline]
    __bpf_redirect+0x5cf/0xb20 net/core/filter.c:2061
    ____bpf_clone_redirect net/core/filter.c:2094 [inline]
    bpf_clone_redirect+0x2f6/0x490 net/core/filter.c:2066
    bpf_prog_41f2bcae09cd4ac3+0xb25/0x1000

The generated test constructs a packet with mac header, network
header, skb->data pointing to network header and skb->len 0.

Redirecting to a sit0 through __bpf_redirect_no_mac pulls the
mac length, even though skb->data already is at skb->network_header.
bpf_prog_test_run_skb has already pulled it as LWT_XMIT !is_l2.

Update the offset calculation to pull only if skb->data differs
from skb->network_header, which is not true in this case.

The test itself can be run only from commit 1cf1cae963 ("bpf:
introduce BPF_PROG_TEST_RUN command"), but the same type of packets
with skb at network header could already be built from lwt xmit hooks,
so this fix is more relevant to that commit.

Also set the mac header on redirect from LWT_XMIT, as even after this
change to __bpf_redirect_no_mac that field is expected to be set, but
is not yet in ip_finish_output2.

Fixes: 3a0af8fd61 ("bpf: BPF for lightweight tunnel infrastructure")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-01-20 01:11:48 +01:00
Michael S. Tsirkin
df133f3f96 virtio_net: bulk free tx skbs
Use napi_consume_skb() to get bulk free.  Note that napi_consume_skb is
safe to call in a non-napi context as long as the napi_budget flag is
correct.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-19 16:06:52 -08:00
Andrew Murray
b36506787c arm64: perf: remove misleading comment
The comment for the armv8pmu_set_event_filter function suggests that
it only works for PMUv2 PMUs - this is incorrect.

Let's remove the incorrect comment.

Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Andrew Murray <andrew.murray@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-01-19 22:57:38 +00:00
Linus Torvalds
5d5c303ea0 A few MIPS fixes for 5.0:
- Fix IPI handling for Lantiq SoCs, which was broken by changes made
   back in v4.12.
 
 - Enable OF/DT serial support in ath79_defconfig to give us working
   serial by default.
 
 - Fix 64b builds for the Jazz platform.
 
 - Set up a struct device for the BCM47xx SoC to allow BCM47xx drivers to
   perform DMA again following the major DMA mapping changes made in
   v4.19.
 
 - Disable MSI on Cavium Octeon systems when the pcie_disable command
   line parameter introduced in v3.3 is used, in order to avoid
   inadvetently accessing PCIe controller registers despite the command
   line.
 
 - Fix a build failure for Cavium Octeon kernels with kexec enabled,
   introduced in v4.20.
 
 - Fix a regression in the behaviour of semctl/shmctl/msgctl IPC syscalls
   for kernels including n32 support but not o32 support caused by some
   cleanup in v3.19.
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Merge tag 'mips_fixes_5.0_2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS fixes from Paul Burton:

 - Fix IPI handling for Lantiq SoCs, which was broken by changes made
   back in v4.12.

 - Enable OF/DT serial support in ath79_defconfig to give us working
   serial by default.

 - Fix 64b builds for the Jazz platform.

 - Set up a struct device for the BCM47xx SoC to allow BCM47xx drivers
   to perform DMA again following the major DMA mapping changes made in
   v4.19.

 - Disable MSI on Cavium Octeon systems when the pcie_disable command
   line parameter introduced in v3.3 is used, in order to avoid
   inadvetently accessing PCIe controller registers despite the command
   line.

 - Fix a build failure for Cavium Octeon kernels with kexec enabled,
   introduced in v4.20.

 - Fix a regression in the behaviour of semctl/shmctl/msgctl IPC
   syscalls for kernels including n32 support but not o32 support caused
   by some cleanup in v3.19.

* tag 'mips_fixes_5.0_2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MIPS: OCTEON: fix kexec support
  mips: fix n32 compat_ipc_parse_version
  Disable MSI also when pcie-octeon.pcie_disable on
  MIPS: BCM47XX: Setup struct device for the SoC
  MIPS: jazz: fix 64bit build
  MIPS: ath79: Enable OF serial ports in the default config
  MIPS: lantiq: Use CP0_LEGACY_COMPARE_IRQ
  MIPS: lantiq: Fix IPI interrupt handling
2019-01-20 10:33:18 +12:00
Linus Torvalds
6a0141a096 A single build fix for powerpc due to device_node.type removal
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Merge tag 'devicetree-fixes-for-5.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull Devicetree fix from Rob Herring:
 "A single build fix for powerpc due to device_node.type removal"

* tag 'devicetree-fixes-for-5.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  powerpc: chrp: Use of_node_is_type to access device_type
2019-01-20 10:28:46 +12:00
Linus Torvalds
26caabbcd7 libnvdimm v5.0-rc3
* Fix driver initialization crash due to the inability to report an
   'error' state for a DIMM's security capability.
 * Build warning fix for little-endian ARM64 builds
 * Fix a potential race between the EDAC driver's usage of the NFIT
   SMBIOS id for a DIMM and the driver shutdown path.
 * A small collection of one-line benign cleanups for duplicate variable
   assignments, a duplicate header include and a mis-typed function
   argument.
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Merge tag 'libnvdimm-fixes-5.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm fixes from Dan Williams:
 "A crash fix, a build warning fix, a miscellaneous small cleanups.

  In case anyone is looking for them, there was a regression caught by
  testing that caused two patches to be dropped from this update.  Those
  patches have been reworked and will soak for another week / re-target
  5.0-rc4.

   - Fix driver initialization crash due to the inability to report an
     'error' state for a DIMM's security capability.

   - Build warning fix for little-endian ARM64 builds

   - Fix a potential race between the EDAC driver's usage of the NFIT
     SMBIOS id for a DIMM and the driver shutdown path.

   - A small collection of one-line benign cleanups for duplicate
     variable assignments, a duplicate header include and a mis-typed
     function argument"

* tag 'libnvdimm-fixes-5.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  libnvdimm/security: Fix nvdimm_security_state() state request selection
  acpi/nfit: Remove duplicate set nd_set in acpi_nfit_init_interleave_set()
  acpi/nfit: Fix race accessing memdev in nfit_get_smbios_id()
  libnvdimm/dimm: Fix security capability detection for non-Intel NVDIMMs
  nfit: Mark some functions as __maybe_unused
  ACPI/nfit: delete the function to_acpi_nfit_desc
  ACPI/nfit: delete the redundant header file
2019-01-20 10:24:30 +12:00
Linus Torvalds
f403d718eb linux-watchdog 5.0-rc-fixes tag
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Merge tag 'linux-watchdog-5.0-rc-fixes' of git://www.linux-watchdog.org/linux-watchdog

Pull watchdog fixes from Wim Van Sebroeck:

 - mt7621_wdt/rt2880_wdt: Fix compilation problem

 - tqmx86: Fix a couple IS_ERR() vs NULL bugs

* tag 'linux-watchdog-5.0-rc-fixes' of git://www.linux-watchdog.org/linux-watchdog:
  watchdog: tqmx86: Fix a couple IS_ERR() vs NULL bugs
  watchdog: mt7621_wdt/rt2880_wdt: Fix compilation problem
2019-01-20 09:58:52 +12:00
Linus Torvalds
b0efca46b5 NFS client fixes for Linux 5.0
Stable bugfixes:
 - Fix TCP receive code on archs with flush_dcache_page()
 
 Other bugfixes:
 - Fix error code in rpcrdma_buffer_create()
 - Fix a double free in rpcrdma_send_ctxs_create()
 - Fix kernel BUG at kernel/cred.c:825
 - Fix unnecessary retry in nfs42_proc_copy_file_range()
 - Ensure rq_bytes_sent is reset before request transmission
 - Ensure we respect the RPCSEC_GSS sequence number limit
 - Address Kerberos performance/behavior regression
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Merge tag 'nfs-for-5.0-2' of git://git.linux-nfs.org/projects/anna/linux-nfs

Pull NFS client fixes from Anna Schumaker:
 "These are mostly fixes for SUNRPC bugs, with a single v4.2
  copy_file_range() fix mixed in.

  Stable bugfixes:
   - Fix TCP receive code on archs with flush_dcache_page()

  Other bugfixes:
   - Fix error code in rpcrdma_buffer_create()
   - Fix a double free in rpcrdma_send_ctxs_create()
   - Fix kernel BUG at kernel/cred.c:825
   - Fix unnecessary retry in nfs42_proc_copy_file_range()
   - Ensure rq_bytes_sent is reset before request transmission
   - Ensure we respect the RPCSEC_GSS sequence number limit
   - Address Kerberos performance/behavior regression"

* tag 'nfs-for-5.0-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
  SUNRPC: Address Kerberos performance/behavior regression
  SUNRPC: Ensure we respect the RPCSEC_GSS sequence number limit
  SUNRPC: Ensure rq_bytes_sent is reset before request transmission
  NFSv4.2 fix unnecessary retry in nfs4_copy_file_range
  sunrpc: kernel BUG at kernel/cred.c:825!
  SUNRPC: Fix TCP receive code on archs with flush_dcache_page()
  xprtrdma: Double free in rpcrdma_sendctxs_create()
  xprtrdma: Fix error code in rpcrdma_buffer_create()
2019-01-20 09:27:38 +12:00
Linus Torvalds
4d5f6e0201 SCSI fixes on 20190118
A set of 17 fixes.  Most of these are minor or trivial.  The one fix
 that may be serious is the isci one: the bug can cause hba parameters
 to be set from uninitialized memory.  I don't think it's exploitable,
 but you never know.
 
 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:
 "A set of 17 fixes. Most of these are minor or trivial.

  The one fix that may be serious is the isci one: the bug can cause hba
  parameters to be set from uninitialized memory. I don't think it's
  exploitable, but you never know"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: cxgb4i: add wait_for_completion()
  scsi: qla1280: set 64bit coherent mask
  scsi: ufs: Fix geometry descriptor size
  scsi: megaraid_sas: Retry reads of outbound_intr_status reg
  scsi: qedi: Add ep_state for login completion on un-reachable targets
  scsi: ufs: Fix system suspend status
  scsi: qla2xxx: Use correct number of vectors for online CPUs
  scsi: hisi_sas: Set protection parameters prior to adding SCSI host
  scsi: tcmu: avoid cmd/qfull timers updated whenever a new cmd comes
  scsi: isci: initialize shost fully before calling scsi_add_host()
  scsi: lpfc: lpfc_sli: Mark expected switch fall-throughs
  scsi: smartpqi_init: fix boolean expression in pqi_device_remove_start
  scsi: core: Synchronize request queue PM status only on successful resume
  scsi: pm80xx: reduce indentation
  scsi: qla4xxx: check return code of qla4xxx_copy_from_fwddb_param
  scsi: megaraid_sas: correct an info message
  scsi: target/iscsi: fix error msg typo when create lio_qr_cache failed
  scsi: sd: Fix cache_type_store()
2019-01-20 09:15:04 +12:00
Linus Torvalds
0facb89245 for-linus-20190118
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Merge tag 'for-linus-20190118' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - block size setting fixes for loop/nbd (Jan Kara)

 - md bio_alloc_mddev() cleanup (Marcos)

 - Ensure we don't lose the REQ_INTEGRITY flag (Ming)

 - Two NVMe fixes by way of Christoph:
    - Fix NVMe IRQ calculation (Ming)
    - Uninitialized variable in nvmet-tcp (Sagi)

 - BFQ comment fix (Paolo)

 - License cleanup for recently added blk-mq-debugfs-zoned (Thomas)

* tag 'for-linus-20190118' of git://git.kernel.dk/linux-block:
  block: Cleanup license notice
  nvme-pci: fix nvme_setup_irqs()
  nvmet-tcp: fix uninitialized variable access
  block: don't lose track of REQ_INTEGRITY flag
  blockdev: Fix livelocks on loop device
  nbd: Use set_blocksize() to set device blocksize
  md: Make bio_alloc_mddev use bio_alloc_bioset
  block, bfq: fix comments on __bfq_deactivate_entity
2019-01-20 09:12:50 +12:00
Jason Gunthorpe
99e309b6ed clang-format: Update .clang-format with the latest for_each macro list
Re-run the shell fragment that generated the original list. In particular
this adds the missing xarray related functions.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
2019-01-19 19:26:06 +01:00
Camelia Groza
3e64cf7a43 net: phy: phy driver features are mandatory
Since phy driver features became a link_mode bitmap, phy drivers that
don't have a list of features configured will cause the kernel to crash
when probed.

Prevent the phy driver from registering if the features field is missing.

Fixes: 719655a149 ("net: phy: Replace phy driver features u32 with link_mode bitmap")
Reported-by: Scott Wood <oss@buserror.net>
Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-19 10:03:08 -08:00
Nathan Chancellor
7afa81c55f isdn: avm: Fix string plus integer warning from Clang
A recent commit in Clang expanded the -Wstring-plus-int warning, showing
some odd behavior in this file.

drivers/isdn/hardware/avm/b1.c:426:30: warning: adding 'int' to a string does not append to the string [-Wstring-plus-int]
                cinfo->version[j] = "\0\0" + 1;
                                    ~~~~~~~^~~
drivers/isdn/hardware/avm/b1.c:426:30: note: use array indexing to silence this warning
                cinfo->version[j] = "\0\0" + 1;
                                           ^
                                    &      [  ]
1 warning generated.

This is equivalent to just "\0". Nick pointed out that it is smarter to
use "" instead of "\0" because "" is used elsewhere in the kernel and
can be deduplicated at the linking stage.

Link: https://github.com/ClangBuiltLinux/linux/issues/309
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-19 10:01:03 -08:00
Rob Herring
75a080cde0 powerpc: chrp: Use of_node_is_type to access device_type
Commit 8ce5f84157 ("of: Remove struct device_node.type pointer")
removed struct device_node.type pointer, but the conversion to use
of_node_is_type() accessor was missed in chrp_init_IRQ().

Fixes: 8ce5f84157 ("of: Remove struct device_node.type pointer")
Reported-by: kbuild test robot <lkp@intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: linuxppc-dev@lists.ozlabs.org
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Rob Herring <robh@kernel.org>
2019-01-19 10:35:42 -06:00
David S. Miller
8a7fa0c350 mlx5-fixes-2019-01-18
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Merge tag 'mlx5-fixes-2019-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
Mellanox, mlx5 fixes 2019-01-18

This series introduces some fixes to mlx5 driver.

Please pull and let me know if there is any problem.

For -stable v4.18
('net/mlx5e: Force CHECKSUM_UNNECESSARY for short ethernet frames')

The patch doesn't apply cleanly to 4.18.y, but it is very simple to
resolve, what should be the procedure here ?
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-18 18:23:23 -08:00
Eli Britstein
25f2d0e779 net/mlx5e: Fix cb_ident duplicate in indirect block register
Previously the identifier used for indirect block callback registry
and for block rule cb registry (when done via indirect blocks) was the
pointer to the tunnel netdev we were interested in receiving updates on.
This worked fine if a single PF existed that registered one callback for
the tunnel netdev of interest. However, if multiple PFs are in place then
the 2nd PF tries to register with the same tunnel netdev identifier. This
leads to EEXIST errors and/or incorrect cb deletions.

Prevent this conflict by using the rpriv pointer as the identifier for
netdev indirect block cb registry, allowing each PF to register a unique
callback per tunnel netdev. For block cb registry, the same PF may
register multiple cbs to the same block if using TC shared blocks.
Instead of the rpriv, use the pointer to the allocated indr_priv data as
the identifier here. This means that there can be a unique block callback
for each PF/tunnel netdev combo.

Fixes: f5bc2c5de1 ("net/mlx5e: Support TC indirect block notifications
for eswitch uplink reprs")
Signed-off-by: Eli Britstein <elibr@mellanox.com>
Reviewed-by: Oz Shlomo <ozsh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-01-18 16:15:31 -08:00
Tariq Toukan
7fdc1adc52 net/mlx5e: Fix wrong (zero) TX drop counter indication for representor
For representors, the TX dropped counter is not folded from the
per-ring counters. Fix it.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-01-18 16:15:31 -08:00
Shay Agroskin
2eb1e42551 net/mlx5e: Fix wrong error code return on FEC query failure
Advertised and configured FEC query failure resulted in printing
wrong error code.

Fixes: 6cfa946050 ("net/mlx5e: Ethtool driver callback for query/set FEC policy")
Signed-off-by: Shay Agroskin <shayag@mellanox.com>
Reported-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-01-18 16:15:30 -08:00
Cong Wang
e8c8b53cca net/mlx5e: Force CHECKSUM_UNNECESSARY for short ethernet frames
When an ethernet frame is padded to meet the minimum ethernet frame
size, the padding octets are not covered by the hardware checksum.
Fortunately the padding octets are usually zero's, which don't affect
checksum. However, we have a switch which pads non-zero octets, this
causes kernel hardware checksum fault repeatedly.

Prior to:
commit '88078d98d1bb ("net: pskb_trim_rcsum() and CHECKSUM_COMPLETE ...")'
skb checksum was forced to be CHECKSUM_NONE when padding is detected.
After it, we need to keep skb->csum updated, like what we do for RXFCS.
However, fixing up CHECKSUM_COMPLETE requires to verify and parse IP
headers, it is not worthy the effort as the packets are so small that
CHECKSUM_COMPLETE can't save anything.

Fixes: 88078d98d1 ("net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends"),
Cc: Eric Dumazet <edumazet@google.com>
Cc: Tariq Toukan <tariqt@mellanox.com>
Cc: Nikola Ciprich <nikola.ciprich@linuxbox.cz>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
2019-01-18 16:15:30 -08:00
Thomas Gleixner
64cf548126 tools: bpftool: Cleanup license mess
Precise and non-ambiguous license information is important. The recent
relicensing of the bpftools introduced a license conflict.

The files have now:

     SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause

and

     * This program is free software; you can redistribute it and/or
     * modify it under the terms of the GNU General Public License
     * as published by the Free Software Foundation; either version
     * 2 of the License, or (at your option) any later version

Amazingly about 20 people acked that change and neither they nor the
committer noticed. Oh well.

Digging deeper: The files were imported from the iproute2 repository with
the GPL V2 or later boiler plate text in commit b66e907cfe ("tools:
bpftool: copy JSON writer from iproute2 repository")

Looking at the iproute2 repository at

  git://git.kernel.org/pub/scm/network/iproute2/iproute2.git

the following commit is the equivivalent:

  commit d9d8c839 ("json_writer: add SPDX Identifier (GPL-2/BSD-2)")

That commit explicitly removes the boiler plate and relicenses the code
uner GPL-2.0-only and BSD-2-Clause. As Steven wrote the original code and
also the relicensing commit, it's assumed that the relicensing was intended
to do exaclty that. Just the kernel side update failed to remove the boiler
plate. Do so now.

Fixes: 907b223651 ("tools: bpftool: dual license all files")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jakub Kicinski <jakub.kicinski@netronome.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: YueHaibing <yuehaibing@huawei.com>
Cc: Yonghong Song <yhs@fb.com>
Cc: Stanislav Fomichev <sdf@google.com>
Cc: Sean Young <sean@mess.org>
Cc: Jiri Benc <jbenc@redhat.com>
Cc: David Calavera <david.calavera@gmail.com>
Cc: Andrey Ignatov <rdna@fb.com>
Cc: Joe Stringer <joe@wand.net.nz>
Cc: David Ahern <dsahern@gmail.com>
Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: Petar Penkov <ppenkov@stanford.edu>
Cc: Sandipan Das <sandipan@linux.ibm.com>
Cc: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: Taeung Song <treeze.taeung@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Quentin Monnet <quentin.monnet@netronome.com>
CC: okash.khawaja@gmail.com
Cc: netdev@vger.kernel.org
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-01-18 15:26:54 -08:00
Daniel Borkmann
9d5564ddcf bpf: fix inner map masking to prevent oob under speculation
During review I noticed that inner meta map setup for map in
map is buggy in that it does not propagate all needed data
from the reference map which the verifier is later accessing.

In particular one such case is index masking to prevent out of
bounds access under speculative execution due to missing the
map's unpriv_array/index_mask field propagation. Fix this such
that the verifier is generating the correct code for inlined
lookups in case of unpriviledged use.

Before patch (test_verifier's 'map in map access' dump):

  # bpftool prog dump xla id 3
     0: (62) *(u32 *)(r10 -4) = 0
     1: (bf) r2 = r10
     2: (07) r2 += -4
     3: (18) r1 = map[id:4]
     5: (07) r1 += 272                |
     6: (61) r0 = *(u32 *)(r2 +0)     |
     7: (35) if r0 >= 0x1 goto pc+6   | Inlined map in map lookup
     8: (54) (u32) r0 &= (u32) 0      | with index masking for
     9: (67) r0 <<= 3                 | map->unpriv_array.
    10: (0f) r0 += r1                 |
    11: (79) r0 = *(u64 *)(r0 +0)     |
    12: (15) if r0 == 0x0 goto pc+1   |
    13: (05) goto pc+1                |
    14: (b7) r0 = 0                   |
    15: (15) if r0 == 0x0 goto pc+11
    16: (62) *(u32 *)(r10 -4) = 0
    17: (bf) r2 = r10
    18: (07) r2 += -4
    19: (bf) r1 = r0
    20: (07) r1 += 272                |
    21: (61) r0 = *(u32 *)(r2 +0)     | Index masking missing (!)
    22: (35) if r0 >= 0x1 goto pc+3   | for inner map despite
    23: (67) r0 <<= 3                 | map->unpriv_array set.
    24: (0f) r0 += r1                 |
    25: (05) goto pc+1                |
    26: (b7) r0 = 0                   |
    27: (b7) r0 = 0
    28: (95) exit

After patch:

  # bpftool prog dump xla id 1
     0: (62) *(u32 *)(r10 -4) = 0
     1: (bf) r2 = r10
     2: (07) r2 += -4
     3: (18) r1 = map[id:2]
     5: (07) r1 += 272                |
     6: (61) r0 = *(u32 *)(r2 +0)     |
     7: (35) if r0 >= 0x1 goto pc+6   | Same inlined map in map lookup
     8: (54) (u32) r0 &= (u32) 0      | with index masking due to
     9: (67) r0 <<= 3                 | map->unpriv_array.
    10: (0f) r0 += r1                 |
    11: (79) r0 = *(u64 *)(r0 +0)     |
    12: (15) if r0 == 0x0 goto pc+1   |
    13: (05) goto pc+1                |
    14: (b7) r0 = 0                   |
    15: (15) if r0 == 0x0 goto pc+12
    16: (62) *(u32 *)(r10 -4) = 0
    17: (bf) r2 = r10
    18: (07) r2 += -4
    19: (bf) r1 = r0
    20: (07) r1 += 272                |
    21: (61) r0 = *(u32 *)(r2 +0)     |
    22: (35) if r0 >= 0x1 goto pc+4   | Now fixed inlined inner map
    23: (54) (u32) r0 &= (u32) 0      | lookup with proper index masking
    24: (67) r0 <<= 3                 | for map->unpriv_array.
    25: (0f) r0 += r1                 |
    26: (05) goto pc+1                |
    27: (b7) r0 = 0                   |
    28: (b7) r0 = 0
    29: (95) exit

Fixes: b2157399cc ("bpf: prevent out-of-bounds speculation")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-01-18 15:19:56 -08:00
Daniel Borkmann
ad6dd7a9c4 bpf: pull in pkt_sched.h header for tooling to fix bpftool build
Dan reported that bpftool does not compile for him:

  $ make tools/bpf
    DESCEND  bpf

  Auto-detecting system features:
  ..                        libbfd: [ on  ]
  ..        disassembler-four-args: [ OFF ]

    DESCEND  bpftool

  Auto-detecting system features:
  ..                        libbfd: [ on  ]
  ..        disassembler-four-args: [ OFF ]

    CC       /opt/linux.git/tools/bpf/bpftool/net.o
  In file included from /opt/linux.git/tools/include/uapi/linux/pkt_cls.h:6:0,
                 from /opt/linux.git/tools/include/uapi/linux/tc_act/tc_bpf.h:14,
                 from net.c:13:
  net.c: In function 'show_dev_tc_bpf':
  net.c:164:21: error: 'TC_H_CLSACT' undeclared (first use in this function)
    handle = TC_H_MAKE(TC_H_CLSACT, TC_H_MIN_INGRESS);
  [...]

Fix it by importing pkt_sched.h header copy into tooling
infrastructure.

Fixes: 49a249c387 ("tools/bpftool: copy a few net uapi headers to tools directory")
Fixes: f6f3bac08f ("tools/bpf: bpftool: add net support")
Reported-by: Dan Gilson <dan_gilson@yahoo.com>
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=202315
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-01-18 15:16:36 -08:00
David S. Miller
efa8c819a6 Merge branch 'mlxsw-fixes'
Ido Schimmel says:

====================
mlxsw: Various fixes

This patchset contains small fixes in mlxsw and one fix in the bridge
driver.

Patches #1-#4 perform small adjustments in PCI and FID code following
recent tests that were performed on the Spectrum-2 ASIC.

Patch #5 fixes the bridge driver to mark FDB entries that were added by
user as such. Otherwise, these entries will be ignored by underlying
switch drivers.

Patch #6 fixes a long standing issue in mlxsw where the driver
incorrectly programmed static FDB entries as both static and sticky.

Patches #7-#8 add test cases for above mentioned bugs.

Please consider patches #1, #2 and #4 for stable.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-18 15:12:16 -08:00
Ido Schimmel
479a2b761d selftests: forwarding: Add a test case for externally learned FDB entries
Test that externally learned FDB entries can roam, but not age out.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-18 15:12:16 -08:00
Ido Schimmel
72159272fc selftests: mlxsw: Test FDB offload indication
Test that externally learned FDB entries added from user space are
marked as offloaded.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-18 15:12:16 -08:00
Ido Schimmel
64254a2054 mlxsw: spectrum_switchdev: Do not treat static FDB entries as sticky
The driver currently treats static FDB entries as both static and
sticky. This is incorrect and prevents such entries from being roamed to
a different port via learning.

Fix this by configuring static entries with ageing disabled and roaming
enabled.

In net-next we can add proper support for the newly introduced 'sticky'
flag.

Fixes: 56ade8fe3f ("mlxsw: spectrum: Add initial support for Spectrum ASIC")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Alexander Petrovskiy <alexpe@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-18 15:12:16 -08:00
Ido Schimmel
710ae72877 net: bridge: Mark FDB entries that were added by user as such
Externally learned entries can be added by a user or by a switch driver
that is notifying the bridge driver about entries that were learned in
hardware.

In the first case, the entries are not marked with the 'added_by_user'
flag, which causes switch drivers to ignore them and not offload them.

The 'added_by_user' flag can be set on externally learned FDB entries
based on the 'swdev_notify' parameter in br_fdb_external_learn_add(),
which effectively means if the created / updated FDB entry was added by
a user or not.

Fixes: 816a3bed95 ("switchdev: Add fdb.added_by_user to switchdev notifications")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Alexander Petrovskiy <alexpe@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Cc: Roopa Prabhu <roopa@cumulusnetworks.com>
Cc: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Cc: bridge@lists.linux-foundation.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-18 15:12:16 -08:00
Nir Dotan
a11dcd6497 mlxsw: spectrum_fid: Update dummy FID index
When using a tc flower action of egress mirred redirect, the driver adds
an implicit FID setting action. This implicit action sets a dummy FID to
the packet and is used as part of a design for trapping unmatched flows
in OVS.  While this implicit FID setting action is supposed to be a NOP
when a redirect action is added, in Spectrum-2 the FID record is
consulted as the dummy FID index is an 802.1D FID index and the packet
is dropped instead of being redirected.

Set the dummy FID index value to be within 802.1Q range. This satisfies
both Spectrum-1 which ignores the FID and Spectrum-2 which identifies it
as an 802.1Q FID and will then follow the redirect action.

Fixes: c3ab435466 ("mlxsw: spectrum: Extend to support Spectrum-2 ASIC")
Signed-off-by: Nir Dotan <nird@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-18 15:12:16 -08:00
Nir Dotan
67c14cc9b3 mlxsw: pci: Return error on PCI reset timeout
Return an appropriate error in the case when the driver timeouts on waiting
for firmware to go out of PCI reset.

Fixes: 233fa44bd6 ("mlxsw: pci: Implement reset done check")
Signed-off-by: Nir Dotan <nird@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-18 15:12:16 -08:00
Nir Dotan
d2f372ba09 mlxsw: pci: Increase PCI SW reset timeout
Spectrum-2 PHY layer introduces a calibration period which is a part of the
Spectrum-2 firmware boot process. Hence increase the SW timeout waiting for
the firmware to come out of boot. This does not increase system boot time
in cases where the firmware PHY calibration process is done quickly.

Fixes: c3ab435466 ("mlxsw: spectrum: Extend to support Spectrum-2 ASIC")
Signed-off-by: Nir Dotan <nird@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-18 15:12:16 -08:00
Ido Schimmel
c9ebea04cb mlxsw: pci: Ring CQ's doorbell before RDQ's
When a packet should be trapped to the CPU the device consumes a WQE
(work queue element) from an RDQ (receive descriptor queue) and copies
the packet to the address specified in the WQE. The device then tries to
post a CQE (completion queue element) that contains various metadata
(e.g., ingress port) about the packet to a CQ (completion queue).

In case the device managed to consume a WQE, but did not manage to post
the corresponding CQE, it will get stuck. This unlikely situation can be
triggered due to the scheme the driver is currently using to process
CQEs.

The driver will consume up to 512 CQEs at a time and after processing
each corresponding WQE it will ring the RDQ's doorbell, letting the
device know that a new WQE was posted for it to consume. Only after
processing all the CQEs (up to 512), the driver will ring the CQ's
doorbell, letting the device know that new ones can be posted.

Fix this by having the driver ring the CQ's doorbell for every processed
CQE, but before ringing the RDQ's doorbell. This guarantees that
whenever we post a new WQE, there is a corresponding CQE available. Copy
the currently processed CQE to prevent the device from overwriting it
with a new CQE after ringing the doorbell.

Note that the driver still arms the CQ only after processing all the
pending CQEs, so that interrupts for this CQ will only be delivered
after the driver finished its processing.

Before commit 8404f6f2e8 ("mlxsw: pci: Allow to use CQEs of version 1
and version 2") the issue was virtually impossible to trigger since the
number of CQEs was twice the number of WQEs and the number of CQEs
processed at a time was equal to the number of available WQEs.

Fixes: 8404f6f2e8 ("mlxsw: pci: Allow to use CQEs of version 1 and version 2")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Semion Lisyansky <semionl@mellanox.com>
Tested-by: Semion Lisyansky <semionl@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-18 15:12:16 -08:00
Felix Manlunas
20f5248a50 MAINTAINERS: update email addresses of liquidio driver maintainers
Update email addresses of liquidio driver maintainers.  Also remove a
former maintainer.

Signed-off-by: Felix Manlunas <fmanlunas@marvell.com>
Acked-by: Derek Chickles <dchickles@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-18 14:07:06 -08:00
Jonathan Neuschäfer
9437b62951 net: Fix typo in NET_FAILOVER help text
"also enables" should not be spelled as one word.

Fixes: cfc80d9a11 ("net: Introduce net_failover driver")
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-18 14:06:29 -08:00
Ross Lagerwall
6c57f04580 net: Fix usage of pskb_trim_rcsum
In certain cases, pskb_trim_rcsum() may change skb pointers.
Reinitialize header pointers afterwards to avoid potential
use-after-frees. Add a note in the documentation of
pskb_trim_rcsum(). Found by KASAN.

Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-18 14:05:14 -08:00
Linus Torvalds
2339e91d0e media fixes for v5.0-rc3
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Merge tag 'media/v5.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:

 - a regression fix at v4l2 core, with affects multi-plane streams

 - a fix at vim2m driver

* tag 'media/v5.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  media: vim2m: only cancel work if it is for right context
  media: v4l: ioctl: Validate num_planes for debug messages
  media: v4l: ioctl: Validate num_planes before using it
  media: v4l2-ioctl: Clear only per-plane reserved fields
2019-01-19 07:34:10 +12:00
Linus Torvalds
d28f3e7219 pci-v5.0-fixes-2
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Merge tag 'pci-v5.0-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas::

 - Fix PCI kconfig menu organization (Rob Herring)

 - Fix pci_alloc_irq_vectors_affinity() error return to allow "reduce
   and retry" for drivers using IRQ sets (Ming Lei)

 - Fix "pci=disable_acs_redir" initdata use-after-free problem (Logan
   Gunthorpe)

* tag 'pci-v5.0-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: Fix __initdata issue with "pci=disable_acs_redir" parameter
  PCI/MSI: Return -ENOSPC from pci_alloc_irq_vectors_affinity()
  PCI: Fix PCI kconfig menu organization
2019-01-19 07:26:16 +12:00
Linus Torvalds
8b4fe58db6 - Fix the error check on master->sysclk val in the Cadence driver
- Fix reattach implementation in the Designware driver
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Merge tag 'i3c/fixes-for-5.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux

Pull i3c fixes from Boris Brezillon:

 - Fix the error check on master->sysclk val in the Cadence driver

 - Fix reattach implementation in the Designware driver

* tag 'i3c/fixes-for-5.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux:
  i3c: master: dw-i3c-master: fix i3c_attach/reattach
  i3c: master: Fix an error checking typo in 'cdns_i3c_master_probe()'
2019-01-19 07:23:25 +12:00
Linus Torvalds
3cdf680ea1 Raw NAND changes:
- jz4740: fix a compilation warning
 - fsmc: fix a regression introduced by ->select_chip() deprecation
 - denali: fix a regression introduced by NAND_KEEP_TIMINGS addition
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Merge tag 'mtd/fixes-for-5.0-rc3' of git://git.infradead.org/linux-mtd

Pull mtd fixes from Boris Brezillon:
 "Raw NAND changes:

   - jz4740: fix a compilation warning

   - fsmc: fix a regression introduced by ->select_chip() deprecation

   - denali: fix a regression introduced by NAND_KEEP_TIMINGS addition"

* tag 'mtd/fixes-for-5.0-rc3' of git://git.infradead.org/linux-mtd:
  mtd: rawnand: denali: get ->setup_data_interface() working again
  mtd: nand: jz4740: fix '__iomem *' vs. '* __iomem'
  mtd: rawnand: fsmc: Keep bank enable bit set
2019-01-19 07:21:43 +12:00
Linus Torvalds
6e4673b42e regmap: Fixes for v5.0
The cleanups for the way we handle type information introduced during
 the merge window revealed that we'd been abusing the irq APIs for a long
 time, causing breakage for systems.  This pull request has a couple of
 minimal fixes for that which restore the previous behaviour for the time
 being, we'll fix it properly for v5.1 but that'd be a bit much to do as
 a bug fix.
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Merge tag 'regmap-fix-v5.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap fixes from Mark Brown:
 "The cleanups for the way we handle type information introduced during
  the merge window revealed that we'd been abusing the irq APIs for a
  long time, causing breakage for systems.

  This has a couple of minimal fixes for that which restore the previous
  behaviour for the time being, we'll fix it properly for v5.1 but
  that'd be a bit much to do as a bug fix"

* tag 'regmap-fix-v5.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap-irq: do not write mask register if mask_base is zero
  regmap: regmap-irq: silently ignore unsupported type settings
2019-01-19 07:17:19 +12:00