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  1. 12 Feb, 2021 21 commits
  3. 11 Feb, 2021 7 commits
  5. 10 Feb, 2021 12 commits
    • wenxu's avatar
      net/sched: cls_flower: Reject invalid ct_state flags rules · 1bcc51ac
      wenxu authored 
      Reject the unsupported and invalid ct_state flags of cls flower rules.

Fixes: e0ace68a ("net/sched: cls_flower: Add matching on conntrack info")
Signed-off-by: default avatarwenxu <wenxu@ucloud.cn>
Reviewed-by: default avatarMarcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Reviewed-by: default avatarJakub Kicinski <kuba@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      1bcc51ac
    • Linus Torvalds's avatar
      Merge tag 'pm-5.11-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 291009f6
      Linus Torvalds authored 
      Pull power management fixes from Rafael Wysocki:
 "Address a performance regression related to scale-invariance on x86
  that may prevent turbo CPU frequencies from being used in certain
  workloads on systems using acpi-cpufreq as the CPU performance scaling
  driver and schedutil as the scaling governor"

* tag 'pm-5.11-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: ACPI: Update arch scale-invariance max perf ratio if CPPC is not there
  cpufreq: ACPI: Extend frequency tables to cover boost frequencies
      291009f6
    • Linus Torvalds's avatar
      Merge tag 'acpi-5.11-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · a3961497
      Linus Torvalds authored 
      Pull ACPI fix from Rafael Wysocki:
 "Revert a problematic ACPICA commit that changed the code to attempt to
  update memory regions which may be read-only on some systems (Ard
  Biesheuvel)"

* tag 'acpi-5.11-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  Revert "ACPICA: Interpreter: fix memory leak by using existing buffer"
      a3961497
    • Linus Torvalds's avatar
      Merge tag 'dmaengine-fix2-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine · 708c2e41
      Linus Torvalds authored 
      Pull dmaengine fixes from Vinod Koul:
 "Some late fixes for dmaengine:

  Core:
   - fix channel device_node deletion

  Driver fixes:
   - dw: revert of runtime pm enabling
   - idxd: device state fix, interrupt completion and list corruption
   - ti: resource leak

* tag 'dmaengine-fix2-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
  dmaengine dw: Revert "dmaengine: dw: Enable runtime PM"
  dmaengine: idxd: check device state before issue command
  dmaengine: ti: k3-udma: Fix a resource leak in an error handling path
  dmaengine: move channel device_node deletion to driver
  dmaengine: idxd: fix misc interrupt completion
  dmaengine: idxd: Fix list corruption in description completion
      708c2e41
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net · 6016bf19
      Linus Torvalds authored 
      Pull networking fixes from David Miller:
 "Another pile of networing fixes:

   1) ath9k build error fix from Arnd Bergmann

   2) dma memory leak fix in mediatec driver from Lorenzo Bianconi.

   3) bpf int3 kprobe fix from Alexei Starovoitov.

   4) bpf stackmap integer overflow fix from Bui Quang Minh.

   5) Add usb device ids for Cinterion MV31 to qmi_qwwan driver, from
      Christoph Schemmel.

   6) Don't update deleted entry in xt_recent netfilter module, from
      Jazsef Kadlecsik.

   7) Use after free in nftables, fix from Pablo Neira Ayuso.

   8) Header checksum fix in flowtable from Sven Auhagen.

   9) Validate user controlled length in qrtr code, from Sabyrzhan
      Tasbolatov.

  10) Fix race in xen/netback, from Juergen Gross,

  11) New device ID in cxgb4, from Raju Rangoju.

  12) Fix ring locking in rxrpc release call, from David Howells.

  13) Don't return LAPB error codes from x25_open(), from Xie He.

  14) Missing error returns in gsi_channel_setup() from Alex Elder.

  15) Get skb_copy_and_csum_datagram working properly with odd segment
      sizes, from Willem de Bruijn.

  16) Missing RFS/RSS table init in enetc driver, from Vladimir Oltean.

  17) Do teardown on probe failure in DSA, from Vladimir Oltean.

  18) Fix compilation failures of txtimestamp selftest, from Vadim
      Fedorenko.

  19) Limit rx per-napi gro queue size to fix latency regression, from
      Eric Dumazet.

  20) dpaa_eth xdp fixes from Camelia Groza.

  21) Missing txq mode update when switching CBS off, in stmmac driver,
      from Mohammad Athari Bin Ismail.

  22) Failover pending logic fix in ibmvnic driver, from Sukadev
      Bhattiprolu.

  23) Null deref fix in vmw_vsock, from Norbert Slusarek.

  24) Missing verdict update in xdp paths of ena driver, from Shay
      Agroskin.

  25) seq_file iteration fix in sctp from Neil Brown.

  26) bpf 32-bit src register truncation fix on div/mod, from Daniel
      Borkmann.

  27) Fix jmp32 pruning in bpf verifier, from Daniel Borkmann.

  28) Fix locking in vsock_shutdown(), from Stefano Garzarella.

  29) Various missing index bound checks in hns3 driver, from Yufeng Mo.

  30) Flush ports on .phylink_mac_link_down() in dsa felix driver, from
      Vladimir Oltean.

  31) Don't mix up stp and mrp port states in bridge layer, from Horatiu
      Vultur.

  32) Fix locking during netif_tx_disable(), from Edwin Peer"

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (45 commits)
  bpf: Fix 32 bit src register truncation on div/mod
  bpf: Fix verifier jmp32 pruning decision logic
  bpf: Fix verifier jsgt branch analysis on max bound
  vsock: fix locking in vsock_shutdown()
  net: hns3: add a check for index in hclge_get_rss_key()
  net: hns3: add a check for tqp_index in hclge_get_ring_chain_from_mbx()
  net: hns3: add a check for queue_id in hclge_reset_vf_queue()
  net: dsa: felix: implement port flushing on .phylink_mac_link_down
  switchdev: mrp: Remove SWITCHDEV_ATTR_ID_MRP_PORT_STAT
  bridge: mrp: Fix the usage of br_mrp_port_switchdev_set_state
  net: watchdog: hold device global xmit lock during tx disable
  netfilter: nftables: relax check for stateful expressions in set definition
  netfilter: conntrack: skip identical origin tuple in same zone only
  vsock/virtio: update credit only if socket is not closed
  net: fix iteration for sctp transport seq_files
  net: ena: Update XDP verdict upon failure
  net/vmw_vsock: improve locking in vsock_connect_timeout()
  net/vmw_vsock: fix NULL pointer dereference
  ibmvnic: Clear failover_pending if unable to schedule
  net: stmmac: set TxQ mode back to DCB after disabling CBS
  ...
      6016bf19
    • Linus Torvalds's avatar
      Merge branch 'akpm' (patches from Andrew) · 4b16b656
      Linus Torvalds authored 
      Merge misc fixes from Andrew Morton:
 "14 patches.

  Subsystems affected by this patch series: mm (kasan, mremap, tmpfs,
  selftests, memcg, and slub), MAINTAINERS, squashfs, nilfs2, and
  firmware"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  nilfs2: make splice write available again
  mm, slub: better heuristic for number of cpus when calculating slab order
  Revert "mm: memcontrol: avoid workload stalls when lowering memory.high"
  MAINTAINERS: update Andrey Ryabinin's email address
  selftests/vm: rename file run_vmtests to run_vmtests.sh
  tmpfs: disallow CONFIG_TMPFS_INODE64 on alpha
  tmpfs: disallow CONFIG_TMPFS_INODE64 on s390
  mm/mremap: fix BUILD_BUG_ON() error in get_extent
  firmware_loader: align .builtin_fw to 8
  kasan: fix stack traces dependency for HW_TAGS
  squashfs: add more sanity checks in xattr id lookup
  squashfs: add more sanity checks in inode lookup
  squashfs: add more sanity checks in id lookup
  squashfs: avoid out of bounds writes in decompressors
      4b16b656
    • Joachim Henke's avatar
      nilfs2: make splice write available again · a35d8f01
      Joachim Henke authored 
      Since 5.10, splice() or sendfile() to NILFS2 return EINVAL.  This was
caused by commit 36e2c742 ("fs: don't allow splice read/write
without explicit ops").

This patch initializes the splice_write field in file_operations, like
most file systems do, to restore the functionality.

Link: https://lkml.kernel.org/r/1612784101-14353-1-git-send-email-konishi.ryusuke@gmail.comSigned-off-by: default avatarJoachim Henke <joachim.henke@t-systems.com>
Signed-off-by: default avatarRyusuke Konishi <konishi.ryusuke@gmail.com>
Tested-by: default avatarRyusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>	[5.10+]
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      a35d8f01
    • Vlastimil Babka's avatar
      mm, slub: better heuristic for number of cpus when calculating slab order · 3286222f
      Vlastimil Babka authored 
      When creating a new kmem cache, SLUB determines how large the slab pages
will based on number of inputs, including the number of CPUs in the
system.  Larger slab pages mean that more objects can be allocated/free
from per-cpu slabs before accessing shared structures, but also
potentially more memory can be wasted due to low slab usage and
fragmentation.  The rough idea of using number of CPUs is that larger
systems will be more likely to benefit from reduced contention, and also
should have enough memory to spare.

Number of CPUs used to be determined as nr_cpu_ids, which is number of
possible cpus, but on some systems many will never be onlined, thus
commit 045ab8c9 ("mm/slub: let number of online CPUs determine the
slub page order") changed it to nr_online_cpus().  However, for kmem
caches created early before CPUs are onlined, this may lead to
permamently low slab page sizes.

Vincent reports a regression [1] of hackbench on arm64 systems:

  "I'm facing significant performances regression on a large arm64
   server system (224 CPUs). Regressions is also present on small arm64
   system (8 CPUs) but in a far smaller order of magnitude

   On 224 CPUs system : 9 iterations of hackbench -l 16000 -g 16
   v5.11-rc4 : 9.135sec (+/- 0.45%)
   v5.11-rc4 + revert this patch: 3.173sec (+/- 0.48%)
   v5.10: 3.136sec (+/- 0.40%)"

Mel reports a regression [2] of hackbench on x86_64, with lockstat suggesting
page allocator contention:

  "i.e. the patch incurs a 7% to 32% performance penalty. This bisected
   cleanly yesterday when I was looking for the regression and then
   found the thread.

   Numerous caches change size. For example, kmalloc-512 goes from
   order-0 (vanilla) to order-2 with the revert.

   So mostly this is down to the number of times SLUB calls into the
   page allocator which only caches order-0 pages on a per-cpu basis"

Clearly num_online_cpus() doesn't work too early in bootup.  We could
change the order dynamically in a memory hotplug callback, but runtime
order changing for existing kmem caches has been already shown as
dangerous, and removed in 32a6f409 ("mm, slub: remove runtime
allocation order changes").

It could be resurrected in a safe manner with some effort, but to fix
the regression we need something simpler.

We could use num_present_cpus() that should be the number of physically
present CPUs even before they are onlined.  That would work for PowerPC
[3], which triggered the original commit, but that still doesn't work on
arm64 [4] as explained in [5].

So this patch tries to determine the best available value without
specific arch knowledge.

 - num_present_cpus() if the number is larger than 1, as that means the
   arch is likely setting it properly

 - nr_cpu_ids otherwise

This should fix the reported regressions while also keeping the effect
of 045ab8c9 for PowerPC systems.  It's possible there are
configurations where num_present_cpus() is 1 during boot while
nr_cpu_ids is at the same time bloated, so these (if they exist) would
keep the large orders based on nr_cpu_ids as was before 045ab8c9.

[1] https://lore.kernel.org/linux-mm/CAKfTPtA_JgMf_+zdFbcb_V9rM7JBWNPjAz9irgwFj7Rou=xzZg@mail.gmail.com/
[2] https://lore.kernel.org/linux-mm/20210128134512.GF3592@techsingularity.net/
[3] https://lore.kernel.org/linux-mm/20210123051607.GC2587010@in.ibm.com/
[4] https://lore.kernel.org/linux-mm/CAKfTPtAjyVmS5VYvU6DBxg4-JEo5bdmWbngf-03YsY18cmWv_g@mail.gmail.com/
[5] https://lore.kernel.org/linux-mm/20210126230305.GD30941@willie-the-truck/

Link: https://lkml.kernel.org/r/20210208134108.22286-1-vbabka@suse.cz
Fixes: 045ab8c9 ("mm/slub: let number of online CPUs determine the slub page order")
Signed-off-by: default avatarVlastimil Babka <vbabka@suse.cz>
Reported-by: default avatarVincent Guittot <vincent.guittot@linaro.org>
Reported-by: default avatarMel Gorman <mgorman@techsingularity.net>
Tested-by: default avatarMel Gorman <mgorman@techsingularity.net>
Tested-by: default avatarVincent Guittot <vincent.guittot@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Bharata B Rao <bharata@linux.ibm.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Jann Horn <jannh@google.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Will Deacon <will@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      3286222f
    • David S. Miller's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf · b8776f14
      David S. Miller authored 
      Daniel Borkmann says:

====================
pull-request: bpf 2021-02-10

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

We've added 5 non-merge commits during the last 8 day(s) which contain
a total of 3 files changed, 22 insertions(+), 21 deletions(-).

The main changes are:

1) Fix missed execution of kprobes BPF progs when kprobe is firing via
   int3, from Alexei Starovoitov.

2) Fix potential integer overflow in map max_entries for stackmap on
   32 bit archs, from Bui Quang Minh.

3) Fix a verifier pruning and a insn rewrite issue related to 32 bit ops,
   from Daniel Borkmann.
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
c# Please enter a commit message to explain why this merge is necessary,
      b8776f14
    • Johannes Weiner's avatar
      Revert "mm: memcontrol: avoid workload stalls when lowering memory.high" · e82553c1
      Johannes Weiner authored 
      This reverts commit 536d3bf2, as it can
cause writers to memory.high to get stuck in the kernel forever,
performing page reclaim and consuming excessive amounts of CPU cycles.

Before the patch, a write to memory.high would first put the new limit
in place for the workload, and then reclaim the requested delta.  After
the patch, the kernel tries to reclaim the delta before putting the new
limit into place, in order to not overwhelm the workload with a sudden,
large excess over the limit.  However, if reclaim is actively racing
with new allocations from the uncurbed workload, it can keep the write()
working inside the kernel indefinitely.

This is causing problems in Facebook production.  A privileged
system-level daemon that adjusts memory.high for various workloads
running on a host can get unexpectedly stuck in the kernel and
essentially turn into a sort of involuntary kswapd for one of the
workloads.  We've observed that daemon busy-spin in a write() for
minutes at a time, neglecting its other duties on the system, and
expending privileged system resources on behalf of a workload.

To remedy this, we have first considered changing the reclaim logic to
break out after a couple of loops - whether the workload has converged
to the new limit or not - and bound the write() call this way.  However,
the root cause that inspired the sequence change in the first place has
been fixed through other means, and so a revert back to the proven
limit-setting sequence, also used by memory.max, is preferable.

The sequence was changed to avoid extreme latencies in the workload when
the limit was lowered: the sudden, large excess created by the limit
lowering would erroneously trigger the penalty sleeping code that is
meant to throttle excessive growth from below.  Allocating threads could
end up sleeping long after the write() had already reclaimed the delta
for which they were being punished.

However, erroneous throttling also caused problems in other scenarios at
around the same time.  This resulted in commit b3ff9291 ("mm, memcg:
reclaim more aggressively before high allocator throttling"), included
in the same release as the offending commit.  When allocating threads
now encounter large excess caused by a racing write() to memory.high,
instead of entering punitive sleeps, they will simply be tasked with
helping reclaim down the excess, and will be held no longer than it
takes to accomplish that.  This is in line with regular limit
enforcement - i.e.  if the workload allocates up against or over an
otherwise unchanged limit from below.

With the patch breaking userspace, and the root cause addressed by other
means already, revert it again.

Link: https://lkml.kernel.org/r/20210122184341.292461-1-hannes@cmpxchg.org
Fixes: 536d3bf2 ("mm: memcontrol: avoid workload stalls when lowering memory.high")
Signed-off-by: default avatarJohannes Weiner <hannes@cmpxchg.org>
Reported-by: default avatarTejun Heo <tj@kernel.org>
Acked-by: default avatarChris Down <chris@chrisdown.name>
Acked-by: default avatarMichal Hocko <mhocko@suse.com>
Cc: Roman Gushchin <guro@fb.com>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Michal Koutný <mkoutny@suse.com>
Cc: <stable@vger.kernel.org>	[5.8+]
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      e82553c1
    • Andrey Ryabinin's avatar
      MAINTAINERS: update Andrey Ryabinin's email address · a0c2eb0a
      Andrey Ryabinin authored 
      Update my email, @virtuozzo.com will stop working shortly.

Link: https://lkml.kernel.org/r/20210204223904.3824-1-ryabinin.a.a@gmail.comSigned-off-by: default avatarAndrey Ryabinin <ryabinin.a.a@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      a0c2eb0a
    • Rong Chen's avatar
      selftests/vm: rename file run_vmtests to run_vmtests.sh · d52db800
      Rong Chen authored 
      Commit c2aa8afc has renamed run_vmtests in Makefile, but the file
still uses the old name.

The kernel test robot reported the following issue:

  # selftests: vm: run_vmtests.sh
  # Warning: file run_vmtests.sh is missing!
  not ok 1 selftests: vm: run_vmtests.sh

Link: https://lkml.kernel.org/r/20210205085507.1479894-1-rong.a.chen@intel.com
Fixes: c2aa8afc (selftests/vm: rename run_vmtests --> run_vmtests.sh)
Signed-off-by: default avatarRong Chen <rong.a.chen@intel.com>
Reported-by: default avatarkernel test robot <lkp@intel.com>
Reviewed-by: default avatarJohn Hubbard <jhubbard@nvidia.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      d52db800
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