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  1. 11 Aug, 2020 3 commits
  3. 10 Aug, 2020 5 commits
  5. 08 Aug, 2020 12 commits
  7. 07 Aug, 2020 4 commits
    • Randy Dunlap's avatar
      bpf: Delete repeated words in comments · b8c1a309
      Randy Dunlap authored 
      Drop repeated words in kernel/bpf/: {has, the}
Signed-off-by: default avatarRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200807033141.10437-1-rdunlap@infradead.org
      b8c1a309
    • Andrii Nakryiko's avatar
      selftests/bpf: Fix silent Makefile output · d5ca5905
      Andrii Nakryiko authored 
      99aacebe ("selftests: do not use .ONESHELL") removed .ONESHELL, which
changes how Makefile "silences" multi-command target recipes. selftests/bpf's
Makefile relied (a somewhat unknowingly) on .ONESHELL behavior of silencing
all commands within the recipe if the first command contains @ symbol.
Removing .ONESHELL exposed this hack.

This patch fixes the issue by explicitly silencing each command with $(Q).

Also explicitly define fallback rule for building *.o from *.c, instead of
relying on non-silent inherited rule. This was causing a non-silent output for
bench.o object file.

Fixes: 92f7440e ("selftests/bpf: More succinct Makefile output")
Signed-off-by: default avatarAndrii Nakryiko <andriin@fb.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200807033058.848677-1-andriin@fb.com
      d5ca5905
    • Alan Maguire's avatar
      bpf, doc: Remove references to warning message when using bpf_trace_printk() · 7fb20f9e
      Alan Maguire authored 
      The BPF helper bpf_trace_printk() no longer uses trace_printk();
it is now triggers a dedicated trace event.  Hence the described
warning is no longer present, so remove the discussion of it as
it may confuse people.

Fixes: ac5a72ea ("bpf: Use dedicated bpf_trace_printk event instead of trace_printk()")
Signed-off-by: default avatarAlan Maguire <alan.maguire@oracle.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/1596801029-32395-1-git-send-email-alan.maguire@oracle.com
      7fb20f9e
    • Xie He's avatar
      drivers/net/wan/lapbether: Added needed_headroom and a skb->len check · c7ca03c2
      Xie He authored 
      1. Added a skb->len check

This driver expects upper layers to include a pseudo header of 1 byte
when passing down a skb for transmission. This driver will read this
1-byte header. This patch added a skb->len check before reading the
header to make sure the header exists.

2. Changed to use needed_headroom instead of hard_header_len to request
necessary headroom to be allocated

In net/packet/af_packet.c, the function packet_snd first reserves a
headroom of length (dev->hard_header_len + dev->needed_headroom).
Then if the socket is a SOCK_DGRAM socket, it calls dev_hard_header,
which calls dev->header_ops->create, to create the link layer header.
If the socket is a SOCK_RAW socket, it "un-reserves" a headroom of
length (dev->hard_header_len), and assumes the user to provide the
appropriate link layer header.

So according to the logic of af_packet.c, dev->hard_header_len should
be the length of the header that would be created by
dev->header_ops->create.

However, this driver doesn't provide dev->header_ops, so logically
dev->hard_header_len should be 0.

So we should use dev->needed_headroom instead of dev->hard_header_len
to request necessary headroom to be allocated.

This change fixes kernel panic when this driver is used with AF_PACKET
SOCK_RAW sockets.

Call stack when panic:

[  168.399197] skbuff: skb_under_panic: text:ffffffff819d95fb len:20
put:14 head:ffff8882704c0a00 data:ffff8882704c09fd tail:0x11 end:0xc0
dev:veth0
...
[  168.399255] Call Trace:
[  168.399259]  skb_push.cold+0x14/0x24
[  168.399262]  eth_header+0x2b/0xc0
[  168.399267]  lapbeth_data_transmit+0x9a/0xb0 [lapbether]
[  168.399275]  lapb_data_transmit+0x22/0x2c [lapb]
[  168.399277]  lapb_transmit_buffer+0x71/0xb0 [lapb]
[  168.399279]  lapb_kick+0xe3/0x1c0 [lapb]
[  168.399281]  lapb_data_request+0x76/0xc0 [lapb]
[  168.399283]  lapbeth_xmit+0x56/0x90 [lapbether]
[  168.399286]  dev_hard_start_xmit+0x91/0x1f0
[  168.399289]  ? irq_init_percpu_irqstack+0xc0/0x100
[  168.399291]  __dev_queue_xmit+0x721/0x8e0
[  168.399295]  ? packet_parse_headers.isra.0+0xd2/0x110
[  168.399297]  dev_queue_xmit+0x10/0x20
[  168.399298]  packet_sendmsg+0xbf0/0x19b0
......

Cc: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Cc: Martin Schiller <ms@dev.tdt.de>
Cc: Brian Norris <briannorris@chromium.org>
Signed-off-by: default avatarXie He <xie.he.0141@gmail.com>
Acked-by: default avatarWillem de Bruijn <willemb@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c7ca03c2
  9. 06 Aug, 2020 16 commits
    • Jianlin Lv's avatar
      bpf: Fix compilation warning of selftests · 929e54a9
      Jianlin Lv authored 
      Clang compiler version: 12.0.0
The following warning appears during the selftests/bpf compilation:

prog_tests/send_signal.c:51:3: warning: ignoring return value of ‘write’,
declared with attribute warn_unused_result [-Wunused-result]
   51 |   write(pipe_c2p[1], buf, 1);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~
prog_tests/send_signal.c:54:3: warning: ignoring return value of ‘read’,
declared with attribute warn_unused_result [-Wunused-result]
   54 |   read(pipe_p2c[0], buf, 1);
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~
......

prog_tests/stacktrace_build_id_nmi.c:13:2: warning: ignoring return value
of ‘fscanf’,declared with attribute warn_unused_result [-Wunused-resul]
   13 |  fscanf(f, "%llu", &sample_freq);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

test_tcpnotify_user.c:133:2: warning:ignoring return value of ‘system’,
declared with attribute warn_unused_result [-Wunused-result]
  133 |  system(test_script);
      |  ^~~~~~~~~~~~~~~~~~~
test_tcpnotify_user.c:138:2: warning:ignoring return value of ‘system’,
declared with attribute warn_unused_result [-Wunused-result]
  138 |  system(test_script);
      |  ^~~~~~~~~~~~~~~~~~~
test_tcpnotify_user.c:143:2: warning:ignoring return value of ‘system’,
declared with attribute warn_unused_result [-Wunused-result]
  143 |  system(test_script);
      |  ^~~~~~~~~~~~~~~~~~~

Add code that fix compilation warning about ignoring return value and
handles any errors; Check return value of library`s API make the code
more secure.
Signed-off-by: default avatarJianlin Lv <Jianlin.Lv@arm.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200806104224.95306-1-Jianlin.Lv@arm.com
      929e54a9
    • Jiri Benc's avatar
      selftests: bpf: Switch off timeout · 6fc5916c
      Jiri Benc authored 
      Several bpf tests are interrupted by the default timeout of 45 seconds added
by commit 852c8cbf ("selftests/kselftest/runner.sh: Add 45 second
timeout per test"). In my case it was test_progs, test_tunnel.sh,
test_lwt_ip_encap.sh and test_xdping.sh.

There's not much value in having a timeout for bpf tests, switch it off.
Signed-off-by: default avatarJiri Benc <jbenc@redhat.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/7a9198ed10917f4ecab4a3dd74bcda1200791efd.1596739059.git.jbenc@redhat.com
      6fc5916c
    • Stanislav Fomichev's avatar
      bpf: Remove inline from bpf_do_trace_printk · 0d360d64
      Stanislav Fomichev authored 
      I get the following error during compilation on my side:
kernel/trace/bpf_trace.c: In function 'bpf_do_trace_printk':
kernel/trace/bpf_trace.c:386:34: error: function 'bpf_do_trace_printk' can never be inlined because it uses variable argument lists
 static inline __printf(1, 0) int bpf_do_trace_printk(const char *fmt, ...)
                                  ^

Fixes: ac5a72ea ("bpf: Use dedicated bpf_trace_printk event instead of trace_printk()")
Signed-off-by: default avatarStanislav Fomichev <sdf@google.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200806182612.1390883-1-sdf@google.com
      0d360d64
    • Stanislav Fomichev's avatar
      bpf: Add missing return to resolve_btfids · d48556f4
      Stanislav Fomichev authored 
      int sets_patch(struct object *obj) doesn't have a 'return 0' at the end.

Fixes: fbbb68de ("bpf: Add resolve_btfids tool to resolve BTF IDs in ELF object")
Signed-off-by: default avatarStanislav Fomichev <sdf@google.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200806155225.637202-1-sdf@google.com
      d48556f4
    • Daniel T. Lee's avatar
      libbf: Fix uninitialized pointer at btf__parse_raw() · 932ac54a
      Daniel T. Lee authored 
      Recently, from commit 94a1fedd ("libbpf: Add btf__parse_raw() and
generic btf__parse() APIs"), new API has been added to libbpf that
allows to parse BTF from raw data file (btf__parse_raw()).

The commit derives build failure of samples/bpf due to improper access
of uninitialized pointer at btf_parse_raw().

    btf.c: In function btf__parse_raw:
    btf.c:625:28: error: btf may be used uninitialized in this function
      625 |  return err ? ERR_PTR(err) : btf;
          |         ~~~~~~~~~~~~~~~~~~~^~~~~

This commit fixes the build failure of samples/bpf by adding code of
initializing btf pointer as NULL.

Fixes: 94a1fedd ("libbpf: Add btf__parse_raw() and generic btf__parse() APIs")
Signed-off-by: default avatarDaniel T. Lee <danieltimlee@gmail.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Acked-by: default avatarJohn Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200805223359.32109-1-danieltimlee@gmail.com
      932ac54a
    • Alexei Starovoitov's avatar
      Merge branch 'bpf_iter-uapi-fix' · 0ac10dc1
      Alexei Starovoitov authored 
      Yonghong Song says:

====================
Andrii raised a concern that current uapi for bpf iterator map
element is a little restrictive and not suitable for future potential
complex customization. This is a valid suggestion, considering people
may indeed add more complex custimization to the iterator, e.g.,
cgroup_id + user_id, etc. for task or task_file. Another example might
be map_id plus additional control so that the bpf iterator may bail
out a bucket earlier if a bucket has too many elements which may hold
lock too long and impact other parts of systems.

Patch #1 modified uapi with kernel changes. Patch #2
adjusted libbpf api accordingly.

Changelogs:
  v3 -> v4:
    . add a forward declaration of bpf_iter_link_info in
      tools/lib/bpf/bpf.h in case that libbpf is built against
      not-latest uapi bpf.h.
    . target the patch set to "bpf" instead of "bpf-next"
  v2 -> v3:
    . undo "not reject iter_info.map.map_fd == 0" from v1.
      In the future map_fd may become optional, so let us use map_fd == 0
      indicating the map_fd is not set by user space.
    . add link_info_len to bpf_iter_attach_opts to ensure always correct
      link_info_len from user. Otherwise, libbpf may deduce incorrect
      link_info_len if it uses different uapi header than the user app.
  v1 -> v2:
    . ensure link_create target_fd/flags == 0 since they are not used. (Andrii)
    . if either of iter_info ptr == 0 or iter_info_len == 0, but not both,
      return error to user space. (Andrii)
    . do not reject iter_info.map.map_fd == 0, go ahead to use it trying to
      get a map reference since the map_fd is required for map_elem iterator.
    . use bpf_iter_link_info in bpf_iter_attach_opts instead of map_fd.
      this way, user space is responsible to set up bpf_iter_link_info and
      libbpf just passes the data to the kernel, simplifying libbpf design.
      (Andrii)
====================
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
      0ac10dc1
    • Yonghong Song's avatar
      tools/bpf: Support new uapi for map element bpf iterator · 74fc097d
      Yonghong Song authored 
      Previous commit adjusted kernel uapi for map
element bpf iterator. This patch adjusted libbpf API
due to uapi change. bpftool and bpf_iter selftests
are also changed accordingly.
Signed-off-by: default avatarYonghong Song <yhs@fb.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Acked-by: default avatarAndrii Nakryiko <andriin@fb.com>
Acked-by: default avatarJohn Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200805055058.1457623-1-yhs@fb.com
      74fc097d
    • Yonghong Song's avatar
      bpf: Change uapi for bpf iterator map elements · 5e7b3020
      Yonghong Song authored 
      Commit a5cbe05a ("bpf: Implement bpf iterator for
map elements") added bpf iterator support for
map elements. The map element bpf iterator requires
info to identify a particular map. In the above
commit, the attr->link_create.target_fd is used
to carry map_fd and an enum bpf_iter_link_info
is added to uapi to specify the target_fd actually
representing a map_fd:
    enum bpf_iter_link_info {
	BPF_ITER_LINK_UNSPEC = 0,
	BPF_ITER_LINK_MAP_FD = 1,

	MAX_BPF_ITER_LINK_INFO,
    };

This is an extensible approach as we can grow
enumerator for pid, cgroup_id, etc. and we can
unionize target_fd for pid, cgroup_id, etc.
But in the future, there are chances that
more complex customization may happen, e.g.,
for tasks, it could be filtered based on
both cgroup_id and user_id.

This patch changed the uapi to have fields
	__aligned_u64	iter_info;
	__u32		iter_info_len;
for additional iter_info for link_create.
The iter_info is defined as
	union bpf_iter_link_info {
		struct {
			__u32   map_fd;
		} map;
	};

So future extension for additional customization
will be easier. The bpf_iter_link_info will be
passed to target callback to validate and generic
bpf_iter framework does not need to deal it any
more.

Note that map_fd = 0 will be considered invalid
and -EBADF will be returned to user space.

Fixes: a5cbe05a ("bpf: Implement bpf iterator for map elements")
Signed-off-by: default avatarYonghong Song <yhs@fb.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Acked-by: default avatarAndrii Nakryiko <andriin@fb.com>
Acked-by: default avatarJohn Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200805055056.1457463-1-yhs@fb.com
      5e7b3020
    • Andrii Nakryiko's avatar
      selftests/bpf: Prevent runqslower from racing on building bpftool · 6bcaf41f
      Andrii Nakryiko authored 
      runqslower's Makefile is building/installing bpftool into
$(OUTPUT)/sbin/bpftool, which coincides with $(DEFAULT_BPFTOOL). In practice
this means that often when building selftests from scratch (after `make
clean`), selftests are racing with runqslower to simultaneously build bpftool
and one of the two processes fail due to file being busy. Prevent this race by
explicitly order-depending on $(BPFTOOL_DEFAULT).

Fixes: a2c9652f ("selftests: Refactor build to remove tools/lib/bpf from include path")
Signed-off-by: default avatarAndrii Nakryiko <andriin@fb.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Acked-by: default avatarJohn Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200805004757.2960750-1-andriin@fb.com
      6bcaf41f
    • Colin Ian King's avatar
      net: hns3: fix spelling mistake "could'nt" -> "couldn't" · 8912fd6a
      Colin Ian King authored 
      There is a spelling mistake in a dev_err message. Fix it.
Signed-off-by: default avatarColin Ian King <colin.king@canonical.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8912fd6a
    • Linus Torvalds's avatar
      Merge tag 'Smack-for-5.9' of git://github.com/cschaufler/smack-next · bfdd5aaa
      Linus Torvalds authored 
      Pull smack updates from Casey Schaufler:
 "Minor fixes to Smack for the v5.9 release.

  All were found by automated checkers and have straightforward
  resolution"

* tag 'Smack-for-5.9' of git://github.com/cschaufler/smack-next:
  Smack: prevent underflow in smk_set_cipso()
  Smack: fix another vsscanf out of bounds
  Smack: fix use-after-free in smk_write_relabel_self()
      bfdd5aaa
    • Linus Torvalds's avatar
      Merge tag 'mips_5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux · b62e4197
      Linus Torvalds authored 
      Pull MIPS upates from Thomas Bogendoerfer:

 - improvements for Loongson64

 - extended ingenic support

 - removal of not maintained paravirt system type

 - cleanups and fixes

* tag 'mips_5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (81 commits)
  MIPS: SGI-IP27: always enable NUMA in Kconfig
  MAINTAINERS: Update KVM/MIPS maintainers
  MIPS: Update default config file for Loongson-3
  MIPS: KVM: Add kvm guest support for Loongson-3
  dt-bindings: mips: Document Loongson kvm guest board
  MIPS: handle Loongson-specific GSExc exception
  MIPS: add definitions for Loongson-specific CP0.Diag1 register
  MIPS: only register FTLBPar exception handler for supported models
  MIPS: ingenic: Hardcode mem size for qi,lb60 board
  MIPS: DTS: ingenic/qi,lb60: Add model and memory node
  MIPS: ingenic: Use fw_passed_dtb even if CONFIG_BUILTIN_DTB
  MIPS: head.S: Init fw_passed_dtb to builtin DTB
  of: address: Fix parser address/size cells initialization
  of_address: Guard of_bus_pci_get_flags with CONFIG_PCI
  MIPS: DTS: Fix number of msi vectors for Loongson64G
  MIPS: Loongson64: Add ISA node for LS7A PCH
  MIPS: Loongson64: DTS: Fix ISA and PCI I/O ranges for RS780E PCH
  MIPS: Loongson64: Enlarge IO_SPACE_LIMIT
  MIPS: Loongson64: Process ISA Node in DeviceTree
  of_address: Add bus type match for pci ranges parser
  ...
      b62e4197
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm · 40ddad19
      Linus Torvalds authored 
      Pull ARM updates from Russell King:

 - add arch/arm/Kbuild from Masahiro Yamada.

 - simplify act_mm macro, since it contains an open-coded
   get_thread_info.

 - VFP updates for Clang from Stefan Agner.

 - Fix unwinder for Clang from Nathan Huckleberry.

 - Remove unused it8152 PCI host controller, used by the removed cm-x2xx
   platforms from Mike Rapoport.

 - Further explanation of __range_ok().

 - Remove kimage_voffset that isn't used anymore from Marc Zyngier.

 - Drop ancient Thumb-2 workaround for old binutils from Ard Biesheuvel.

 - Documentation cleanup for mach-* from Pete Zaitcev.

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8996/1: Documentation/Clean up the description of mach-<class>
  ARM: 8995/1: drop Thumb-2 workaround for ancient binutils
  ARM: 8994/1: mm: drop kimage_voffset which was only used by KVM
  ARM: uaccess: add further explanation of __range_ok()
  ARM: 8993/1: remove it8152 PCI controller driver
  ARM: 8992/1: Fix unwind_frame for clang-built kernels
  ARM: 8991/1: use VFP assembler mnemonics if available
  ARM: 8990/1: use VFP assembler mnemonics in register load/store macros
  ARM: 8989/1: use .fpu assembler directives instead of assembler arguments
  ARM: 8982/1: mm: Simplify act_mm macro
  ARM: 8981/1: add arch/arm/Kbuild
      40ddad19
    • Linus Torvalds's avatar
      Merge tag 'csky-for-linus-5.9-rc1' of https://github.com/c-sky/csky-linux · 2044513f
      Linus Torvalds authored 
      Pull arch/csky updates from Guo Ren:
 "New features:
   - seccomp-filter
   - err-injection
   - top-down&random mmap-layout
   - irq_work
   - show_ipi
   - context-tracking

  Fixes & Optimizations:
   - kprobe_on_ftrace
   - optimize panic print"

* tag 'csky-for-linus-5.9-rc1' of https://github.com/c-sky/csky-linux:
  csky: Add context tracking support
  csky: Add arch_show_interrupts for IPI interrupts
  csky: Add irq_work support
  csky: Fixup warning by EXPORT_SYMBOL(kmap)
  csky: Set CONFIG_NR_CPU 4 as default
  csky: Use top-down mmap layout
  csky: Optimize the trap processing flow
  csky: Add support for function error injection
  csky: Fixup kprobes handler couldn't change pc
  csky: Fixup duplicated restore sp in RESTORE_REGS_FTRACE
  csky: Add cpu feature register hint for smp
  csky: Add SECCOMP_FILTER supported
  csky: remove unusued thread_saved_pc and *_segments functions/macros
      2044513f
    • Linus Torvalds's avatar
      Merge tag 'xtensa-20200805' of git://github.com/jcmvbkbc/linux-xtensa · bbcf9cd1
      Linus Torvalds authored 
      Pull Xtensa updates from Max Filippov:

 - add syscall audit support

 - add seccomp filter support

 - clean up make rules under arch/xtensa/boot

 - fix state management for exclusive access opcodes

 - fix build with PMU enabled

* tag 'xtensa-20200805' of git://github.com/jcmvbkbc/linux-xtensa:
  xtensa: add missing exclusive access state management
  xtensa: fix xtensa_pmu_setup prototype
  xtensa: add boot subdirectories build artifacts to 'targets'
  xtensa: add uImage and xipImage to targets
  xtensa: move vmlinux.bin[.gz] to boot subdirectory
  xtensa: initialize_mmu.h: fix a duplicated word
  selftests/seccomp: add xtensa support
  xtensa: add seccomp support
  xtensa: expose syscall through user_pt_regs
  xtensa: add audit support
      bbcf9cd1
    • Linus Torvalds's avatar
      Merge tag 'hyperv-next-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux · 9ab9bc51
      Linus Torvalds authored 
      Pull hyperv updates from Wei Liu:

 - A patch series from Andrea to improve vmbus code

 - Two clean-up patches from Alexander and Randy

* tag 'hyperv-next-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
  hyperv: hyperv.h: drop a duplicated word
  tools: hv: change http to https in hv_kvp_daemon.c
  Drivers: hv: vmbus: Remove the lock field from the vmbus_channel struct
  scsi: storvsc: Introduce the per-storvsc_device spinlock
  Drivers: hv: vmbus: Remove unnecessary channel->lock critical sections (sc_list updaters)
  Drivers: hv: vmbus: Use channel_mutex in channel_vp_mapping_show()
  Drivers: hv: vmbus: Remove unnecessary channel->lock critical sections (sc_list readers)
  Drivers: hv: vmbus: Replace cpumask_test_cpu(, cpu_online_mask) with cpu_online()
  Drivers: hv: vmbus: Remove the numa_node field from the vmbus_channel struct
  Drivers: hv: vmbus: Remove the target_vp field from the vmbus_channel struct
      9ab9bc51
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