Precision markers need to be propagated whenever we have an ARG_CONST_*
style argument, as the verifier cannot consider imprecise scalars to be
equivalent for the purposes of states_equal check when such arguments
refine the return value (in this case, set mem_size for PTR_TO_MEM). The
resultant mem_size for the R0 is derived from the constant value, and if
the verifier incorrectly prunes states considering them equivalent where
such arguments exist (by seeing that both registers have reg->precise as
false in regsafe), we can end up with invalid programs passing the
verifier which can do access beyond what should have been the correct
mem_size in that explored state.

To show a concrete example of the problem:

0000000000000000 <prog>:
       0:       r2 = *(u32 *)(r1 + 80)
       1:       r1 = *(u32 *)(r1 + 76)
       2:       r3 = r1
       3:       r3 += 4
       4:       if r3 > r2 goto +18 <LBB5_5>
       5:       w2 = 0
       6:       *(u32 *)(r1 + 0) = r2
       7:       r1 = *(u32 *)(r1 + 0)
       8:       r2 = 1
       9:       if w1 == 0 goto +1 <LBB5_3>
      10:       r2 = -1

0000000000000058 <LBB5_3>:
      11:       r1 = 0 ll
      13:       r3 = 0
      14:       call bpf_ringbuf_reserve
      15:       if r0 == 0 goto +7 <LBB5_5>
      16:       r1 = r0
      17:       r1 += 16777215
      18:       w2 = 0
      19:       *(u8 *)(r1 + 0) = r2
      20:       r1 = r0
      21:       r2 = 0
      22:       call bpf_ringbuf_submit

00000000000000b8 <LBB5_5>:
      23:       w0 = 0
      24:       exit

For the first case, the single line execution's exploration will prune
the search at insn 14 for the branch insn 9's second leg as it will be
verified first using r2 = -1 (UINT_MAX), while as w1 at insn 9 will
always be 0 so at runtime we don't get error for being greater than
UINT_MAX/4 from bpf_ringbuf_reserve. The verifier during regsafe just
sees reg->precise as false for both r2 registers in both states, hence
considers them equal for purposes of states_equal.

If we propagated precise markers using the backtracking support, we
would use the precise marking to then ensure that old r2 (UINT_MAX) was
within the new r2 (1) and this would never be true, so the verification
would rightfully fail.

The end result is that the out of bounds access at instruction 19 would
be permitted without this fix.

Note that reg->precise is always set to true when user does not have
CAP_BPF (or when subprog count is greater than 1 (i.e. use of any static
or global functions)), hence this is only a problem when precision marks
need to be explicitly propagated (i.e. privileged users with CAP_BPF).

A simplified test case has been included in the next patch to prevent
future regressions.

Fixes: 457f4436 ("bpf: Implement BPF ring buffer and verifier support for it")
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20220823185300.406-2-memxor@gmail.comSigned-off-by: Alexei Starovoitov <ast@kernel.org>

While reading bpf_jit_limit, it can be changed concurrently via sysctl,
WRITE_ONCE() in __do_proc_doulongvec_minmax(). The size of bpf_jit_limit
is long, so we need to add a paired READ_ONCE() to avoid load-tearing.

Fixes: ede95a63 ("bpf: add bpf_jit_limit knob to restrict unpriv allocations")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20220823215804.2177-1-kuniyu@amazon.com

Syzkaller reported a triggered kernel BUG as follows:

  ------------[ cut here ]------------
  kernel BUG at kernel/bpf/cgroup.c:925!
  invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
  CPU: 1 PID: 194 Comm: detach Not tainted 5.19.0-14184-g69dac8e4 #8
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
  rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
  RIP: 0010:__cgroup_bpf_detach+0x1f2/0x2a0
  Code: 00 e8 92 60 30 00 84 c0 75 d8 4c 89 e0 31 f6 85 f6 74 19 42 f6 84
  28 48 05 00 00 02 75 0e 48 8b 80 c0 00 00 00 48 85 c0 75 e5 <0f> 0b 48
  8b 0c5
  RSP: 0018:ffffc9000055bdb0 EFLAGS: 00000246
  RAX: 0000000000000000 RBX: ffff888100ec0800 RCX: ffffc900000f1000
  RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff888100ec4578
  RBP: 0000000000000000 R08: ffff888100ec0800 R09: 0000000000000040
  R10: 0000000000000000 R11: 0000000000000000 R12: ffff888100ec4000
  R13: 000000000000000d R14: ffffc90000199000 R15: ffff888100effb00
  FS:  00007f68213d2b80(0000) GS:ffff88813bc80000(0000)
  knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: 000055f74a0e5850 CR3: 0000000102836000 CR4: 00000000000006e0
  Call Trace:
   <TASK>
   cgroup_bpf_prog_detach+0xcc/0x100
   __sys_bpf+0x2273/0x2a00
   __x64_sys_bpf+0x17/0x20
   do_syscall_64+0x3b/0x90
   entry_SYSCALL_64_after_hwframe+0x63/0xcd
  RIP: 0033:0x7f68214dbcb9
  Code: 08 44 89 e0 5b 41 5c c3 66 0f 1f 84 00 00 00 00 00 48 89 f8 48 89
  f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01
  f0 ff8
  RSP: 002b:00007ffeb487db68 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
  RAX: ffffffffffffffda RBX: 000000000000000b RCX: 00007f68214dbcb9
  RDX: 0000000000000090 RSI: 00007ffeb487db70 RDI: 0000000000000009
  RBP: 0000000000000003 R08: 0000000000000012 R09: 0000000b00000003
  R10: 00007ffeb487db70 R11: 0000000000000246 R12: 00007ffeb487dc20
  R13: 0000000000000004 R14: 0000000000000001 R15: 000055f74a1011b0
   </TASK>
  Modules linked in:
  ---[ end trace 0000000000000000 ]---

Repetition steps:

For the following cgroup tree,

  root
   |
  cg1
   |
  cg2

  1. attach prog2 to cg2, and then attach prog1 to cg1, both bpf progs
     attach type is NONE or OVERRIDE.
  2. write 1 to /proc/thread-self/fail-nth for failslab.
  3. detach prog1 for cg1, and then kernel BUG occur.

Failslab injection will cause kmalloc fail and fall back to
purge_effective_progs. The problem is that cg2 have attached another prog,
so when go through cg2 layer, iteration will add pos to 1, and subsequent
operations will be skipped by the following condition, and cg will meet
NULL in the end.

  `if (pos && !(cg->bpf.flags[atype] & BPF_F_ALLOW_MULTI))`

The NULL cg means no link or prog match, this is as expected, and it's not
a bug. So here just skip the no match situation.

Fixes: 4c46091e ("bpf: Fix KASAN use-after-free Read in compute_effective_progs")
Signed-off-by: Pu Lehui <pulehui@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220813134030.1972696-1-pulehui@huawei.com

Commit 451ef36b ("ip_tunnels: Add new flow flags field to ip_tunnel_key")
added a "flow_flags" member to struct ip_tunnel_key which was later used by
the commit in the fixes tag to avoid dropping packets with sources that
aren't locally configured when set in bpf_set_tunnel_key().

VXLAN and GENEVE were made to respect this flag, ip tunnels like IPIP and GRE
were not.

This commit fixes this omission by making ip_tunnel_init_flow() receive
the flow flags from the tunnel key in the relevant collect_md paths.

Fixes: b8fff748 ("bpf: Set flow flag to allow any source IP in bpf_tunnel_key")
Signed-off-by: Eyal Birger <eyal.birger@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Paul Chaignon <paul@isovalent.com>
Link: https://lore.kernel.org/bpf/20220818074118.726639-1-eyal.birger@gmail.com

The verifier cannot perform sufficient validation of any pointers passed
into bpf_attr and treats them as integers rather than pointers. The helper
will then read from arbitrary pointers passed into it. Restrict the helper
to CAP_PERFMON since the security model in BPF of arbitrary kernel read is
CAP_BPF + CAP_PERFMON.

Fixes: af2ac3e1 ("bpf: Prepare bpf syscall to be used from kernel and user space.")
Signed-off-by: YiFei Zhu <zhuyifei@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220816205517.682470-1-zhuyifei@google.com

Partially revert 94dfc73e ("treewide: uapi: Replace zero-length arrays
with flexible-array members") given it breaks BPF UAPI.

For example, BPF CI run reveals build breakage under LLVM:

  [...]
    CLNG-BPF [test_maps] map_ptr_kern.o
    CLNG-BPF [test_maps] btf__core_reloc_arrays___diff_arr_val_sz.o
    CLNG-BPF [test_maps] test_bpf_cookie.o
  progs/map_ptr_kern.c:314:26: error: field 'trie_key' with variable sized type 'struct bpf_lpm_trie_key' not at the end of a struct or class is a GNU extension [-Werror,-Wgnu-variable-sized-type-not-at-end]
           struct bpf_lpm_trie_key trie_key;
                                   ^
    CLNG-BPF [test_maps] btf__core_reloc_type_based___diff.o
  1 error generated.
  make: *** [Makefile:521: /tmp/runner/work/bpf/bpf/tools/testing/selftests/bpf/map_ptr_kern.o] Error 1
  make: *** Waiting for unfinished jobs....
  [...]

Typical usage of the bpf_lpm_trie_key is that the struct gets embedded into
a user defined key for the LPM BPF map, from the selftest example:

  struct bpf_lpm_trie_key {                 <-- UAPI exported struct
         __u32   prefixlen;
         __u8    data[];
  };

  struct lpm_key {                          <-- BPF program defined struct
         struct bpf_lpm_trie_key trie_key;
         __u32 data;
  };

Undo this for BPF until a different solution can be found. It's the only flexible-
array member case in the UAPI header.

This was discovered in BPF CI after Dave reported that the include/uapi/linux/bpf.h
header was out of sync with tools/include/uapi/linux/bpf.h after 94dfc73e. And
the subsequent sync attempt failed CI.

Fixes: 94dfc73e ("treewide: uapi: Replace zero-length arrays with flexible-array members")
Reported-by: Dave Marchevsky <davemarchevsky@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/bpf/22aebc88-da67-f086-e620-dd4a16e2bc69@iogearbox.net

Fix one kernel NULL pointer dereference as below:

[  224.462334] Call Trace:
[  224.462394]  __tcp_bpf_recvmsg+0xd3/0x380
[  224.462441]  ? sock_has_perm+0x78/0xa0
[  224.462463]  tcp_bpf_recvmsg+0x12e/0x220
[  224.462494]  inet_recvmsg+0x5b/0xd0
[  224.462534]  __sys_recvfrom+0xc8/0x130
[  224.462574]  ? syscall_trace_enter+0x1df/0x2e0
[  224.462606]  ? __do_page_fault+0x2de/0x500
[  224.462635]  __x64_sys_recvfrom+0x24/0x30
[  224.462660]  do_syscall_64+0x5d/0x1d0
[  224.462709]  entry_SYSCALL_64_after_hwframe+0x65/0xca

In commit 9974d37e ("skmsg: Fix invalid last sg check in
sk_msg_recvmsg()"), we change last sg check to sg_is_last(),
but in sockmap redirection case (without stream_parser/stream_verdict/
skb_verdict), we did not mark the end of the scatterlist. Check the
sk_msg_alloc, sk_msg_page_add, and bpf_msg_push_data functions, they all
do not mark the end of sg. They are expected to use sg.end for end
judgment. So the judgment of '(i != msg_rx->sg.end)' is added back here.

Fixes: 9974d37e ("skmsg: Fix invalid last sg check in sk_msg_recvmsg()")
Signed-off-by: Liu Jian <liujian56@huawei.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/20220809094915.150391-1-liujian56@huawei.com

Fix an issue in XDP_SHARED_UMEM mode together with aligned mode where
packets are corrupted for the second and any further sockets bound to
the same umem. In other words, this does not affect the first socket
bound to the umem. The culprit for this bug is that the initialization
of the DMA addresses for the pre-populated xsk buffer pool entries was
not performed for any socket but the first one bound to the umem. Only
the linear array of DMA addresses was populated. Fix this by populating
the DMA addresses in the xsk buffer pool for every socket bound to the
same umem.

Fixes: 94033cd8 ("xsk: Optimize for aligned case")
Reported-by: Alasdair McWilliam <alasdair.mcwilliam@outlook.com>
Reported-by: Intrusion Shield Team <dnevil@intrusion.com>
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Alasdair McWilliam <alasdair.mcwilliam@outlook.com>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/xdp-newbies/6205E10C-292E-4995-9D10-409649354226@outlook.com/
Link: https://lore.kernel.org/bpf/20220812113259.531-1-magnus.karlsson@gmail.com

The lru_bug BPF selftest is failing execution on s390x machines. The
failure is due to program attachment failing in turn, similar to a bunch
of other tests. Those other tests have already been deny-listed and with
this change we do the same for the lru_bug test, adding it to the
corresponding file.

Fixes: de7b9927 ("selftests/bpf: Add test for prealloc_lru_pop bug")
Signed-off-by: Daniel Müller <deso@posteo.net>
Acked-by: Mykola Lysenko <mykolal@fb.com>
Link: https://lore.kernel.org/r/20220810200710.1300299-1-deso@posteo.netSigned-off-by: Alexei Starovoitov <ast@kernel.org>

The platform_get_irq_byname() returns non-zero IRQ number
or negative error number. "if (irq)" always true, chang it
to "if (irq > 0)"
Signed-off-by: Li Qiong <liqiong@nfschina.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The double `the' is duplicated in the comment, remove one.
Signed-off-by: Jason Wang <wangborong@cdjrlc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The double `the' is duplicated in the comment, remove one.
Signed-off-by: Jason Wang <wangborong@cdjrlc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The double `is' is duplicated in the comment, remove one.
Signed-off-by: Jason Wang <wangborong@cdjrlc.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Using native endian-ness for device supplied fields is wrong
on BE platforms. Sparse warns about this.

Fixes: 91f41f01 ("drivers/net/virtio_net: Added RSS hash report.")
Cc: "Andrew Melnychenko" <andrew@daynix.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The issue happens on some error handling paths. When the function
fails to grab the object `xprt`, it simply returns 0, forgetting to
decrease the reference count of another object `xps`, which is
increased by rpc_sysfs_xprt_kobj_get_xprt_switch(), causing refcount
leaks. Also, the function forgets to check whether `xps` is valid
before using it, which may result in NULL-dereferencing issues.

Fix it by adding proper error handling code when either `xprt` or
`xps` is NULL.

Fixes: 5b7eb784 ("SUNRPC: take a xprt offline using sysfs")
Signed-off-by: Xin Xiong <xiongx18@fudan.edu.cn>
Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Delete the redundant word 'the'.
Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The functions clear_bit and set_bit do not imply a memory barrier, thus it
may be possible that the waitqueue_active function (which does not take
any locks) is moved before clear_bit and it could miss a wakeup event.

Fix this bug by adding a memory barrier after clear_bit.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

Pull networking fixes from Jakub Kicinski:
 "Including fixes from bluetooth, bpf, can and netfilter.

  A little larger than usual but it's all fixes, no late features. It's
  large partially because of timing, and partially because of follow ups
  to stuff that got merged a week or so before the merge window and
  wasn't as widely tested. Maybe the Bluetooth fixes are a little
  alarming so we'll address that, but the rest seems okay and not scary.

  Notably we're including a fix for the netfilter Kconfig [1], your WiFi
  warning [2] and a bluetooth fix which should unblock syzbot [3].

  Current release - regressions:

   - Bluetooth:
      - don't try to cancel uninitialized works [3]
      - L2CAP: fix use-after-free caused by l2cap_chan_put

   - tls: rx: fix device offload after recent rework

   - devlink: fix UAF on failed reload and leftover locks in mlxsw

  Current release - new code bugs:

   - netfilter:
      - flowtable: fix incorrect Kconfig dependencies [1]
      - nf_tables: fix crash when nf_trace is enabled

   - bpf:
      - use proper target btf when exporting attach_btf_obj_id
      - arm64: fixes for bpf trampoline support

   - Bluetooth:
      - ISO: unlock on error path in iso_sock_setsockopt()
      - ISO: fix info leak in iso_sock_getsockopt()
      - ISO: fix iso_sock_getsockopt for BT_DEFER_SETUP
      - ISO: fix memory corruption on iso_pinfo.base
      - ISO: fix not using the correct QoS
      - hci_conn: fix updating ISO QoS PHY

   - phy: dp83867: fix get nvmem cell fail

  Previous releases - regressions:

   - wifi: cfg80211: fix validating BSS pointers in
     __cfg80211_connect_result [2]

   - atm: bring back zatm uAPI after ATM had been removed

   - properly fix old bug making bonding ARP monitor mode not being able
     to work with software devices with lockless Tx

   - tap: fix null-deref on skb->dev in dev_parse_header_protocol

   - revert "net: usb: ax88179_178a needs FLAG_SEND_ZLP" it helps some
     devices and breaks others

   - netfilter:
      - nf_tables: many fixes rejecting cross-object linking which may
        lead to UAFs
      - nf_tables: fix null deref due to zeroed list head
      - nf_tables: validate variable length element extension

   - bgmac: fix a BUG triggered by wrong bytes_compl

   - bcmgenet: indicate MAC is in charge of PHY PM

  Previous releases - always broken:

   - bpf:
      - fix bad pointer deref in bpf_sys_bpf() injected via test infra
      - disallow non-builtin bpf programs calling the prog_run command
      - don't reinit map value in prealloc_lru_pop
      - fix UAFs during the read of map iterator fd
      - fix invalidity check for values in sk local storage map
      - reject sleepable program for non-resched map iterator

   - mptcp:
      - move subflow cleanup in mptcp_destroy_common()
      - do not queue data on closed subflows

   - virtio_net: fix memory leak inside XDP_TX with mergeable

   - vsock: fix memory leak when multiple threads try to connect()

   - rework sk_user_data sharing to prevent psock leaks

   - geneve: fix TOS inheriting for ipv4

   - tunnels & drivers: do not use RT_TOS for IPv6 flowlabel

   - phy: c45 baset1: do not skip aneg configuration if clock role is
     not specified

   - rose: avoid overflow when /proc displays timer information

   - x25: fix call timeouts in blocking connects

   - can: mcp251x: fix race condition on receive interrupt

   - can: j1939:
      - replace user-reachable WARN_ON_ONCE() with netdev_warn_once()
      - fix memory leak of skbs in j1939_session_destroy()

  Misc:

   - docs: bpf: clarify that many things are not uAPI

   - seg6: initialize induction variable to first valid array index (to
     silence clang vs objtool warning)

   - can: ems_usb: fix clang 14's -Wunaligned-access warning"

* tag 'net-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (117 commits)
  net: atm: bring back zatm uAPI
  dpaa2-eth: trace the allocated address instead of page struct
  net: add missing kdoc for struct genl_multicast_group::flags
  nfp: fix use-after-free in area_cache_get()
  MAINTAINERS: use my korg address for mt7601u
  mlxsw: minimal: Fix deadlock in ports creation
  bonding: fix reference count leak in balance-alb mode
  net: usb: qmi_wwan: Add support for Cinterion MV32
  bpf: Shut up kern_sys_bpf warning.
  net/tls: Use RCU API to access tls_ctx->netdev
  tls: rx: device: don't try to copy too much on detach
  tls: rx: device: bound the frag walk
  net_sched: cls_route: remove from list when handle is 0
  selftests: forwarding: Fix failing tests with old libnet
  net: refactor bpf_sk_reuseport_detach()
  net: fix refcount bug in sk_psock_get (2)
  selftests/bpf: Ensure sleepable program is rejected by hash map iter
  selftests/bpf: Add write tests for sk local storage map iterator
  selftests/bpf: Add tests for reading a dangling map iter fd
  bpf: Only allow sleepable program for resched-able iterator
  ...

Pull more ACPI updates from Rafael Wysocki:
 "These fix up direct references to the fwnode field in struct device
  and extend ACPI device properties support.

  Specifics:

   - Replace direct references to the fwnode field in struct device with
     dev_fwnode() and device_match_fwnode() (Andy Shevchenko)

   - Make the ACPI code handling device properties support properties
     with buffer values (Sakari Ailus)"

* tag 'acpi-5.20-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: property: Fix error handling in acpi_init_properties()
  ACPI: VIOT: Do not dereference fwnode in struct device
  ACPI: property: Read buffer properties as integers
  ACPI: property: Add support for parsing buffer property UUID
  ACPI: property: Unify integer value reading functions
  ACPI: property: Switch node property referencing from ifs to a switch
  ACPI: property: Move property ref argument parsing into a new function
  ACPI: property: Use acpi_object_type consistently in property ref parsing
  ACPI: property: Tie data nodes to acpi handles
  ACPI: property: Return type of acpi_add_nondev_subnodes() should be bool

Pull more iomap updates from Darrick Wong:
 "In the past 10 days or so I've not heard any ZOMG STOP style
  complaints about removing ->writepage support from gfs2 or zonefs, so
  here's the pull request removing them (and the underlying fs iomap
  support) from the kernel:

   - Remove iomap_writepage and all callers, since the mm apparently
     never called the zonefs or gfs2 writepage functions"

* tag 'iomap-6.0-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  iomap: remove iomap_writepage
  zonefs: remove ->writepage
  gfs2: remove ->writepage
  gfs2: stop using generic_writepages in gfs2_ail1_start_one

Pull ceph updates from Ilya Dryomov:
 "We have a good pile of various fixes and cleanups from Xiubo, Jeff,
  Luis and others, almost exclusively in the filesystem.

  Several patches touch files outside of our normal purview to set the
  stage for bringing in Jeff's long awaited ceph+fscrypt series in the
  near future. All of them have appropriate acks and sat in linux-next
  for a while"

* tag 'ceph-for-5.20-rc1' of https://github.com/ceph/ceph-client: (27 commits)
  libceph: clean up ceph_osdc_start_request prototype
  libceph: fix ceph_pagelist_reserve() comment typo
  ceph: remove useless check for the folio
  ceph: don't truncate file in atomic_open
  ceph: make f_bsize always equal to f_frsize
  ceph: flush the dirty caps immediatelly when quota is approaching
  libceph: print fsid and epoch with osd id
  libceph: check pointer before assigned to "c->rules[]"
  ceph: don't get the inline data for new creating files
  ceph: update the auth cap when the async create req is forwarded
  ceph: make change_auth_cap_ses a global symbol
  ceph: fix incorrect old_size length in ceph_mds_request_args
  ceph: switch back to testing for NULL folio->private in ceph_dirty_folio
  ceph: call netfs_subreq_terminated with was_async == false
  ceph: convert to generic_file_llseek
  ceph: fix the incorrect comment for the ceph_mds_caps struct
  ceph: don't leak snap_rwsem in handle_cap_grant
  ceph: prevent a client from exceeding the MDS maximum xattr size
  ceph: choose auth MDS for getxattr with the Xs caps
  ceph: add session already open notify support
  ...

Pull more kvm updates from Paolo Bonzini:

 - Xen timer fixes

 - Documentation formatting fixes

 - Make rseq selftest compatible with glibc-2.35

 - Fix handling of illegal LEA reg, reg

 - Cleanup creation of debugfs entries

 - Fix steal time cache handling bug

 - Fixes for MMIO caching

 - Optimize computation of number of LBRs

 - Fix uninitialized field in guest_maxphyaddr < host_maxphyaddr path

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (26 commits)
  KVM: x86/MMU: properly format KVM_CAP_VM_DISABLE_NX_HUGE_PAGES capability table
  Documentation: KVM: extend KVM_CAP_VM_DISABLE_NX_HUGE_PAGES heading underline
  KVM: VMX: Adjust number of LBR records for PERF_CAPABILITIES at refresh
  KVM: VMX: Use proper type-safe functions for vCPU => LBRs helpers
  KVM: x86: Refresh PMU after writes to MSR_IA32_PERF_CAPABILITIES
  KVM: selftests: Test all possible "invalid" PERF_CAPABILITIES.LBR_FMT vals
  KVM: selftests: Use getcpu() instead of sched_getcpu() in rseq_test
  KVM: selftests: Make rseq compatible with glibc-2.35
  KVM: Actually create debugfs in kvm_create_vm()
  KVM: Pass the name of the VM fd to kvm_create_vm_debugfs()
  KVM: Get an fd before creating the VM
  KVM: Shove vcpu stats_id init into kvm_vcpu_init()
  KVM: Shove vm stats_id init into kvm_create_vm()
  KVM: x86/mmu: Add sanity check that MMIO SPTE mask doesn't overlap gen
  KVM: x86/mmu: rename trace function name for asynchronous page fault
  KVM: x86/xen: Stop Xen timer before changing IRQ
  KVM: x86/xen: Initialize Xen timer only once
  KVM: SVM: Disable SEV-ES support if MMIO caching is disable
  KVM: x86/mmu: Fully re-evaluate MMIO caching when SPTE masks change
  KVM: x86: Tag kvm_mmu_x86_module_init() with __init
  ...

Jiri reports that linux-atm does not build without this header.
Bring it back. It's completely dead code but we can't break
the build for user space :(
Reported-by: Jiri Slaby <jirislaby@kernel.org>
Fixes: 052e1f01 ("net: atm: remove support for ZeitNet ZN122x ATM devices")
Link: https://lore.kernel.org/all/8576aef3-37e4-8bae-bab5-08f82a78efd3@kernel.org/
Link: https://lore.kernel.org/r/20220810164547.484378-1-kuba@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

We should trace the allocated address instead of page struct.

Fixes: 27c87486 ("dpaa2-eth: Use a single page per Rx buffer")
Signed-off-by: Chen Lin <chen.lin5@zte.com.cn>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Link: https://lore.kernel.org/r/20220811151651.3327-1-chen45464546@163.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Merge changes adding support for device properties with buffer values
to the ACPI device properties handling code.

* acpi-properties:
  ACPI: property: Fix error handling in acpi_init_properties()
  ACPI: property: Read buffer properties as integers
  ACPI: property: Add support for parsing buffer property UUID
  ACPI: property: Unify integer value reading functions
  ACPI: property: Switch node property referencing from ifs to a switch
  ACPI: property: Move property ref argument parsing into a new function
  ACPI: property: Use acpi_object_type consistently in property ref parsing
  ACPI: property: Tie data nodes to acpi handles
  ACPI: property: Return type of acpi_add_nondev_subnodes() should be bool

Multicast group flags were added in commit 4d54cc32 ("mptcp: avoid
lock_fast usage in accept path"), but it missed adding the kdoc.

Mention which flags go into that field, and do the same for
op structs.

Link: https://lore.kernel.org/r/20220809232012.403730-1-kuba@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Pull input updates from Dmitry Torokhov:

 - changes to input core to properly queue synthetic events (such as
   autorepeat) and to release multitouch contacts when an input device
   is inhibited or suspended

 - reworked quirk handling in i8042 driver that consolidates multiple
   DMI tables into one and adds several quirks for TUXEDO line of
   laptops

 - update to mt6779 keypad to better reflect organization of the
   hardware

 - changes to mtk-pmic-keys driver preparing it to handle more variants

 - facelift of adp5588-keys driver

 - improvements to iqs7222 driver

 - adjustments to various DT binding documents for input devices

 - other assorted driver fixes.

* tag 'input-for-v5.20-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (54 commits)
  Input: adc-joystick - fix ordering in adc_joystick_probe()
  dt-bindings: input: ariel-pwrbutton: use spi-peripheral-props.yaml
  Input: deactivate MT slots when inhibiting or suspending devices
  Input: properly queue synthetic events
  dt-bindings: input: iqs7222: Use central 'linux,code' definition
  Input: i8042 - add dritek quirk for Acer Aspire One AO532
  dt-bindings: input: gpio-keys: accept also interrupt-extended
  dt-bindings: input: gpio-keys: reference input.yaml and document properties
  dt-bindings: input: gpio-keys: enforce node names to match all properties
  dt-bindings: input: Convert adc-keys to DT schema
  dt-bindings: input: Centralize 'linux,input-type' definition
  dt-bindings: input: Use common 'linux,keycodes' definition
  dt-bindings: input: Centralize 'linux,code' definition
  dt-bindings: input: Increase maximum keycode value to 0x2ff
  Input: mt6779-keypad - implement row/column selection
  Input: mt6779-keypad - match hardware matrix organization
  Input: i8042 - add additional TUXEDO devices to i8042 quirk tables
  Input: goodix - switch use of acpi_gpio_get_*_resource() APIs
  Input: i8042 - add TUXEDO devices to i8042 quirk tables
  Input: i8042 - add debug output for quirks
  ...

area_cache_get() is used to distribute cache->area and set cache->id,
 and if cache->id is not 0 and cache->area->kref refcount is 0, it will
 release the cache->area by nfp_cpp_area_release(). area_cache_get()
 set cache->id before cpp->op->area_init() and nfp_cpp_area_acquire().

But if area_init() or nfp_cpp_area_acquire() fails, the cache->id is
 is already set but the refcount is not increased as expected. At this
 time, calling the nfp_cpp_area_release() will cause use-after-free.

To avoid the use-after-free, set cache->id after area_init() and
 nfp_cpp_area_acquire() complete successfully.

Note: This vulnerability is triggerable by providing emulated device
 equipped with specified configuration.

 BUG: KASAN: use-after-free in nfp6000_area_init (drivers/net/ethernet/netronome/nfp/nfpcore/nfp6000_pcie.c:760)
  Write of size 4 at addr ffff888005b7f4a0 by task swapper/0/1

 Call Trace:
  <TASK>
 nfp6000_area_init (drivers/net/ethernet/netronome/nfp/nfpcore/nfp6000_pcie.c:760)
 area_cache_get.constprop.8 (drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cppcore.c:884)

 Allocated by task 1:
 nfp_cpp_area_alloc_with_name (drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cppcore.c:303)
 nfp_cpp_area_cache_add (drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cppcore.c:802)
 nfp6000_init (drivers/net/ethernet/netronome/nfp/nfpcore/nfp6000_pcie.c:1230)
 nfp_cpp_from_operations (drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cppcore.c:1215)
 nfp_pci_probe (drivers/net/ethernet/netronome/nfp/nfp_main.c:744)

 Freed by task 1:
 kfree (mm/slub.c:4562)
 area_cache_get.constprop.8 (drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cppcore.c:873)
 nfp_cpp_read (drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cppcore.c:924 drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cppcore.c:973)
 nfp_cpp_readl (drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cpplib.c:48)
Signed-off-by: Jialiang Wang <wangjialiang0806@163.com>
Reviewed-by: Yinjun Zhang <yinjun.zhang@corigine.com>
Acked-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20220810073057.4032-1-wangjialiang0806@163.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Change my address for mt7601u to the main one.

Link: https://lore.kernel.org/r/20220809233843.408004-1-kuba@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Drop devl_lock() / devl_unlock() from ports creation and removal flows
since the devlink instance lock is now taken by mlxsw_core.

Fixes: 72a4c8c9 ("mlxsw: convert driver to use unlocked devlink API during init/fini")
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/f4afce5ab0318617f3866b85274be52542d59b32.1660211614.git.petrm@nvidia.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Commit d5410ac7 ("net:bonding:support balance-alb interface
with vlan to bridge") introduced a reference count leak by not releasing
the reference acquired by ip_dev_find().  Remedy this by insuring the
reference is released.

Fixes: d5410ac7 ("net:bonding:support balance-alb interface with vlan to bridge")
Signed-off-by: Jay Vosburgh <jay.vosburgh@canonical.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://lore.kernel.org/r/26758.1660194413@famineSigned-off-by: Jakub Kicinski <kuba@kernel.org>

This reverts commit 258fafcd.

The clang -Wformat warning is terminally broken, and the clang people
can't seem to get their act together.

This test program causes a warning with clang:

	#include <stdio.h>

	int main(int argc, char **argv)
	{
		printf("%hhu\n", 'a');
	}

resulting in

  t.c:5:19: warning: format specifies type 'unsigned char' but the argument has type 'int' [-Wformat]
          printf("%hhu\n", 'a');
                  ~~~~     ^~~
                  %d

and apparently clang people consider that a feature, because they don't
want to face the reality of how either C character constants, C
arithmetic, and C varargs functions work.

The rest of the world just shakes their head at that kind of
incompetence, and turns off -Wformat for clang again.

And no, the "you should use a pointless cast to shut this up" is not a
valid answer.  That warning should not exist in the first place, or at
least be optinal with some "-Wformat-me-harder" kind of option.

[ Admittedly, there's also very little reason to *ever* use '%hh[ud]' in
  C, but what little reason there is is entirely about 'I want to see
  only the low 8 bits of the argument'. So I would suggest nobody ever
  use that format in the first place, but if they do, the clang
  behavious is simply always wrong. Because '%hhu' takes an 'int'. It's
  that simple. ]
Reported-by: Sudip Mukherjee (Codethink) <sudipm.mukherjee@gmail.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

There are 2 models for MV32 serials. MV32-W-A is designed
based on Qualcomm SDX62 chip, and MV32-W-B is designed based
on Qualcomm SDX65 chip. So we use 2 different PID to separate it.

Test evidence as below:
T:  Bus=03 Lev=01 Prnt=01 Port=02 Cnt=03 Dev#=  3 Spd=480 MxCh= 0
D:  Ver= 2.10 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=1e2d ProdID=00f3 Rev=05.04
S:  Manufacturer=Cinterion
S:  Product=Cinterion PID 0x00F3 USB Mobile Broadband
S:  SerialNumber=d7b4be8d
C:  #Ifs= 4 Cfg#= 1 Atr=a0 MxPwr=500mA
I:  If#=0x0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=50 Driver=qmi_wwan
I:  If#=0x1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option
I:  If#=0x2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option
I:  If#=0x3 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option

T:  Bus=03 Lev=01 Prnt=01 Port=02 Cnt=03 Dev#= 10 Spd=480 MxCh= 0
D:  Ver= 2.10 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=1e2d ProdID=00f4 Rev=05.04
S:  Manufacturer=Cinterion
S:  Product=Cinterion PID 0x00F4 USB Mobile Broadband
S:  SerialNumber=d095087d
C:  #Ifs= 4 Cfg#= 1 Atr=a0 MxPwr=500mA
I:  If#=0x0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=50 Driver=qmi_wwan
I:  If#=0x1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option
I:  If#=0x2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option
I:  If#=0x3 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option
Signed-off-by: Slark Xiao <slark_xiao@163.com>
Acked-by: Bjørn Mork <bjorn@mork.no>
Link: https://lore.kernel.org/r/20220810014521.9383-1-slark_xiao@163.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Pull in bpf to silence a false positive warning.

* git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  bpf: Shut up kern_sys_bpf warning.

Link: https://lore.kernel.org/r/CAADnVQK589CZN1Q9w8huJqkEyEed+ZMTWqcpA1Rm2CjN3a4XoQ@mail.gmail.com/Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Shut up this warning:
kernel/bpf/syscall.c:5089:5: warning: no previous prototype for function 'kern_sys_bpf' [-Wmissing-prototypes]
int kern_sys_bpf(int cmd, union bpf_attr *attr, unsigned int size)
Reported-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

There is unexpected warning on KVM_CAP_VM_DISABLE_NX_HUGE_PAGES capability
table, which cause the table to be rendered as paragraph text instead.

The warning is due to missing colon at capability name and returns keyword,
as well as improper alignment on multi-line returns field.

Fix the warning by adding missing colons and aligning the field.

Link: https://lore.kernel.org/lkml/20220627181937.3be67263@canb.auug.org.au/
Fixes: 084cc29f ("KVM: x86/MMU: Allow NX huge pages to be disabled on a per-vm basis")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: David Matlack <dmatlack@google.com>
Cc: Ben Gardon <bgardon@google.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: kvm@vger.kernel.org
Cc: linux-next@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Message-Id: <20220627095151.19339-3-bagasdotme@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Extend heading underline for KVM_CAP_VM_DISABLE_NX_HUGE_PAGE to match
the heading text length.

Link: https://lore.kernel.org/lkml/20220627181937.3be67263@canb.auug.org.au/
Fixes: 084cc29f ("KVM: x86/MMU: Allow NX huge pages to be disabled on a per-vm basis")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: David Matlack <dmatlack@google.com>
Cc: Ben Gardon <bgardon@google.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: kvm@vger.kernel.org
Cc: linux-next@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Message-Id: <20220627095151.19339-2-bagasdotme@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Currently, tls_device_down synchronizes with tls_device_resync_rx using
RCU, however, the pointer to netdev is stored using WRITE_ONCE and
loaded using READ_ONCE.

Although such approach is technically correct (rcu_dereference is
essentially a READ_ONCE, and rcu_assign_pointer uses WRITE_ONCE to store
NULL), using special RCU helpers for pointers is more valid, as it
includes additional checks and might change the implementation
transparently to the callers.

Mark the netdev pointer as __rcu and use the correct RCU helpers to
access it. For non-concurrent access pass the right conditions that
guarantee safe access (locks taken, refcount value). Also use the
correct helper in mlx5e, where even READ_ONCE was missing.

The transition to RCU exposes existing issues, fixed by this commit:

1. bond_tls_device_xmit could read netdev twice, and it could become
NULL the second time, after the NULL check passed.

2. Drivers shouldn't stop processing the last packet if tls_device_down
just set netdev to NULL, before tls_dev_del was called. This prevents a
possible packet drop when transitioning to the fallback software mode.

Fixes: 89df6a81 ("net/bonding: Implement TLS TX device offload")
Fixes: c55dcdd4 ("net/tls: Fix use-after-free after the TLS device goes down and up")
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Link: https://lore.kernel.org/r/20220810081602.1435800-1-maximmi@nvidia.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Another device offload bug, we use the length of the output
skb as an indication of how much data to copy. But that skb
is sized to offset + record length, and we start from offset.
So we end up double-counting the offset which leads to
skb_copy_bits() returning -EFAULT.
Reported-by: Tariq Toukan <tariqt@nvidia.com>
Fixes: 84c61fe1 ("tls: rx: do not use the standard strparser")
Tested-by: Ran Rozenstein <ranro@nvidia.com>
Link: https://lore.kernel.org/r/20220809175544.354343-2-kuba@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

We can't do skb_walk_frags() on the input skbs, because
the input skbs is really just a pointer to the tcp read
queue. We need to bound the "is decrypted" check by the
amount of data in the message.

Note that the walk in tls_device_reencrypt() is after a
CoW so the skb there is safe to walk. Actually in the
current implementation it can't have frags at all, but
whatever, maybe one day it will.
Reported-by: Tariq Toukan <tariqt@nvidia.com>
Fixes: 84c61fe1 ("tls: rx: do not use the standard strparser")
Tested-by: Ran Rozenstein <ranro@nvidia.com>
Link: https://lore.kernel.org/r/20220809175544.354343-1-kuba@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>