An incoming call can race with rxrpc socket destruction, leading to a
leaked call.  This may result in an oops when the call timer eventually
expires:

   BUG: kernel NULL pointer dereference, address: 0000000000000874
   RIP: 0010:_raw_spin_lock_irqsave+0x2a/0x50
   Call Trace:
    <IRQ>
    try_to_wake_up+0x59/0x550
    ? __local_bh_enable_ip+0x37/0x80
    ? rxrpc_poke_call+0x52/0x110 [rxrpc]
    ? rxrpc_poke_call+0x110/0x110 [rxrpc]
    ? rxrpc_poke_call+0x110/0x110 [rxrpc]
    call_timer_fn+0x24/0x120

with a warning in the kernel log looking something like:

   rxrpc: Call 00000000ba5e571a still in use (1,SvAwtACK,1061d,0)!

incurred during rmmod of rxrpc.  The 1061d is the call flags:

   RECVMSG_READ_ALL, RX_HEARD, BEGAN_RX_TIMER, RX_LAST, EXPOSED,
   IS_SERVICE, RELEASED

but no DISCONNECTED flag (0x800), so it's an incoming (service) call and
it's still connected.

The race appears to be that:

 (1) rxrpc_new_incoming_call() consults the service struct, checks sk_state
     and allocates a call - then pauses, possibly for an interrupt.

 (2) rxrpc_release_sock() sets RXRPC_CLOSE, nulls the service pointer,
     discards the prealloc and releases all calls attached to the socket.

 (3) rxrpc_new_incoming_call() resumes, launching the new call, including
     its timer and attaching it to the socket.

Fix this by read-locking local->services_lock to access the AF_RXRPC socket
providing the service rather than RCU in rxrpc_new_incoming_call().
There's no real need to use RCU here as local->services_lock is only
write-locked by the socket side in two places: when binding and when
shutting down.

Fixes: 5e6ef4f1 ("rxrpc: Make the I/O thread take over the call and local processor work")
Reported-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: linux-afs@lists.infradead.org

Move the connection setup of client calls to the I/O thread so that a whole
load of locking and barrierage can be eliminated.  This necessitates the
app thread waiting for connection to complete before it can begin
encrypting data.

This also completes the fix for a race that exists between call connection
and call disconnection whereby the data transmission code adds the call to
the peer error distribution list after the call has been disconnected (say
by the rxrpc socket getting closed).

The fix is to complete the process of moving call connection, data
transmission and call disconnection into the I/O thread and thus forcibly
serialising them.

Note that the issue may predate the overhaul to an I/O thread model that
were included in the merge window for v6.2, but the timing is very much
changed by the change given below.

Fixes: cf37b598 ("rxrpc: Move DATA transmission into call processor work item")
Reported-by: syzbot+c22650d2844392afdcfd@syzkaller.appspotmail.com
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

Move the management of the client connection cache to the I/O thread rather
than managing it from the namespace as an aggregate across all the local
endpoints within the namespace.

This will allow a load of locking to be got rid of in a future patch as
only the I/O thread will be looking at the this.

The downside is that the total number of cached connections on the system
can get higher because the limit is now per-local rather than per-netns.
We can, however, keep the number of client conns in use across the entire
netfs and use that to reduce the expiration time of idle connection.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

All the setters of call->state are now in the I/O thread and thus the state
lock is now unnecessary.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

Move the call state changes that are made in rxrpc_recvmsg() to the I/O
thread.  This means that, thenceforth, only the I/O thread does this and
the call state lock can be removed.

This requires the Rx phase to be ended when the last packet is received,
not when it is processed.

Since this now changes the rxrpc call state to SUCCEEDED before we've
consumed all the data from it, rxrpc_kernel_check_life() mustn't say the
call is dead until the recvmsg queue is empty (unless the call has failed).
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

Move all the call state changes that are made in rxrpc_sendmsg() to the I/O
thread.  This is a step towards removing the call state lock.

This requires the switch to the RXRPC_CALL_CLIENT_AWAIT_REPLY and
RXRPC_CALL_SERVER_SEND_REPLY states to be done when the last packet is
decanted from ->tx_sendmsg to ->tx_buffer in the I/O thread, not when it is
added to ->tx_sendmsg by sendmsg().
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

Wrap accesses to get the state of a call from outside of the I/O thread in
a single place so that the barrier needed to order wrt the error code and
abort code is in just that place.

Also use a barrier when setting the call state and again when reading the
call state such that the auxiliary completion info (error code, abort code)
can be read without taking a read lock on the call state lock.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

Split out the functions that change the state of an rxrpc call into their
own file.  The idea being to remove anything to do with changing the state
of a call directly from the rxrpc sendmsg() and recvmsg() paths and have
all that done in the I/O thread only, with the ultimate aim of removing the
state lock entirely.  Moving the code out of sendmsg.c and recvmsg.c makes
that easier to manage.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

Use the information now stored in struct rxrpc_call to configure the
connection bundle and thence the connection, rather than using the
rxrpc_conn_parameters struct.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

Offload the completion of the challenge/response cycle on a service
connection to the I/O thread.  After the RESPONSE packet has been
successfully decrypted and verified by the work queue, offloading the
changing of the call states to the I/O thread makes iteration over the
conn's channel list simpler.

Do this by marking the RESPONSE skbuff and putting it onto the receive
queue for the I/O thread to collect.  We put it on the front of the queue
as we've already received the packet for it.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

Make the set of connection IDs per local endpoint so that endpoints don't
cause each other's connections to get dismissed.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

Tidy up the abort generation infrastructure in the following ways:

 (1) Create an enum and string mapping table to list the reasons an abort
     might be generated in tracing.

 (2) Replace the 3-char string with the values from (1) in the places that
     use that to log the abort source.  This gets rid of a memcpy() in the
     tracepoint.

 (3) Subsume the rxrpc_rx_eproto tracepoint with the rxrpc_abort tracepoint
     and use values from (1) to indicate the trace reason.

 (4) Always make a call to an abort function at the point of the abort
     rather than stashing the values into variables and using goto to get
     to a place where it reported.  The C optimiser will collapse the calls
     together as appropriate.  The abort functions return a value that can
     be returned directly if appropriate.

Note that this extends into afs also at the points where that generates an
abort.  To aid with this, the afs sources need to #define
RXRPC_TRACE_ONLY_DEFINE_ENUMS before including the rxrpc tracing header
because they don't have access to the rxrpc internal structures that some
of the tracepoints make use of.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

Clean up connection abort, using the connection state_lock to gate access
to change that state, and use an rxrpc_call_completion value to indicate
the difference between local and remote aborts as these can be pasted
directly into the call state.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

Provide a means by which an event notification can be sent to a connection
through such that the I/O thread can pick it up and handle it rather than
doing it in a separate workqueue.

This is then used to move the deferred final ACK of a call into the I/O
thread rather than a separate work queue as part of the drive to do all
transmission from the I/O thread.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

Only perform call disconnection in the I/O thread to reduce the locking
requirement.

This is the first part of a fix for a race that exists between call
connection and call disconnection whereby the data transmission code adds
the call to the peer error distribution list after the call has been
disconnected (say by the rxrpc socket getting closed).

The fix is to complete the process of moving call connection, data
transmission and call disconnection into the I/O thread and thus forcibly
serialising them.

Note that the issue may predate the overhaul to an I/O thread model that
were included in the merge window for v6.2, but the timing is very much
changed by the change given below.

Fixes: cf37b598 ("rxrpc: Move DATA transmission into call processor work item")
Reported-by: syzbot+c22650d2844392afdcfd@syzkaller.appspotmail.com
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

Only set the abort call completion state in the I/O thread and only
transmit ABORT packets from there.  rxrpc_abort_call() can then be made to
actually send the packet.

Further, ABORT packets should only be sent if the call has been exposed to
the network (ie. at least one attempted DATA transmission has occurred for
it).
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

Call the rxrpc_conn_retransmit_call() directly from rxrpc_input_packet()
rather than calling it via connection event handling.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

Make the local endpoint and it's I/O thread hold a reference on a connected
call until that call is disconnected.  Without this, we're reliant on
either the AF_RXRPC socket to hold a ref (which is dropped when the call is
released) or a queued work item to hold a ref (the work item is being
replaced with the I/O thread).
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

Stash the network namespace pointer in the rxrpc_local struct in addition
to a pointer to the rxrpc-specific net namespace info.  Use this to remove
some places where the socket is passed as a parameter.
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org

This modem has 7 interfaces, 5 of them are serial interfaces and are
driven by cdc_acm, while 2 of them are wwan interfaces and are driven
by cdc_ether:
If 0: Abstract (modem)
If 1: Abstract (modem)
If 2: Abstract (modem)
If 3: Abstract (modem)
If 4: Abstract (modem)
If 5: Ethernet Networking
If 6: Ethernet Networking

Without this change, the 2 network interfaces will be named to usb0
and usb1, our QA think the names are confusing and filed a bug on it.

After applying this change, the name will be wwan0 and wwan1, and
they could work well with modem manager.
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20230105034249.10433-1-hui.wang@canonical.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

In current driver, MAC will always enable 2ns delay in RGMII mode,
but that's not the correct usage.

Remove the dwmac_fix_mac_speed() in driver, and recommend "rgmii-id"
for phy-mode in device tree.

Fixes: f2d356a6 ("stmmac: dwmac-mediatek: add support for mt8195")
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Biao Huang <biao.huang@mediatek.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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

  Current release - regressions:

   - bpf: fix nullness propagation for reg to reg comparisons, avoid
     null-deref

   - inet: control sockets should not use current thread task_frag

   - bpf: always use maximal size for copy_array()

   - eth: bnxt_en: don't link netdev to a devlink port for VFs

  Current release - new code bugs:

   - rxrpc: fix a couple of potential use-after-frees

   - netfilter: conntrack: fix IPv6 exthdr error check

   - wifi: iwlwifi: fw: skip PPAG for JF, avoid FW crashes

   - eth: dsa: qca8k: various fixes for the in-band register access

   - eth: nfp: fix schedule in atomic context when sync mc address

   - eth: renesas: rswitch: fix getting mac address from device tree

   - mobile: ipa: use proper endpoint mask for suspend

  Previous releases - regressions:

   - tcp: add TIME_WAIT sockets in bhash2, fix regression caught by
     Jiri / python tests

   - net: tc: don't intepret cls results when asked to drop, fix
     oob-access

   - vrf: determine the dst using the original ifindex for multicast

   - eth: bnxt_en:
      - fix XDP RX path if BPF adjusted packet length
      - fix HDS (header placement) and jumbo thresholds for RX packets

   - eth: ice: xsk: do not use xdp_return_frame() on tx_buf->raw_buf,
     avoid memory corruptions

  Previous releases - always broken:

   - ulp: prevent ULP without clone op from entering the LISTEN status

   - veth: fix race with AF_XDP exposing old or uninitialized
     descriptors

   - bpf:
      - pull before calling skb_postpull_rcsum() (fix checksum support
        and avoid a WARN())
      - fix panic due to wrong pageattr of im->image (when livepatch and
        kretfunc coexist)
      - keep a reference to the mm, in case the task is dead

   - mptcp: fix deadlock in fastopen error path

   - netfilter:
      - nf_tables: perform type checking for existing sets
      - nf_tables: honor set timeout and garbage collection updates
      - ipset: fix hash:net,port,net hang with /0 subnet
      - ipset: avoid hung task warning when adding/deleting entries

   - selftests: net:
      - fix cmsg_so_mark.sh test hang on non-x86 systems
      - fix the arp_ndisc_evict_nocarrier test for IPv6

   - usb: rndis_host: secure rndis_query check against int overflow

   - eth: r8169: fix dmar pte write access during suspend/resume with
     WOL

   - eth: lan966x: fix configuration of the PCS

   - eth: sparx5: fix reading of the MAC address

   - eth: qed: allow sleep in qed_mcp_trace_dump()

   - eth: hns3:
      - fix interrupts re-initialization after VF FLR
      - fix handling of promisc when MAC addr table gets full
      - refine the handling for VF heartbeat

   - eth: mlx5:
      - properly handle ingress QinQ-tagged packets on VST
      - fix io_eq_size and event_eq_size params validation on big endian
      - fix RoCE setting at HCA level if not supported at all
      - don't turn CQE compression on by default for IPoIB

   - eth: ena:
      - fix toeplitz initial hash key value
      - account for the number of XDP-processed bytes in interface stats
      - fix rx_copybreak value update

  Misc:

   - ethtool: harden phy stat handling against buggy drivers

   - docs: netdev: convert maintainer's doc from FAQ to a normal
     document"

* tag 'net-6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (112 commits)
  caif: fix memory leak in cfctrl_linkup_request()
  inet: control sockets should not use current thread task_frag
  net/ulp: prevent ULP without clone op from entering the LISTEN status
  qed: allow sleep in qed_mcp_trace_dump()
  MAINTAINERS: Update maintainers for ptp_vmw driver
  usb: rndis_host: Secure rndis_query check against int overflow
  net: dpaa: Fix dtsec check for PCS availability
  octeontx2-pf: Fix lmtst ID used in aura free
  drivers/net/bonding/bond_3ad: return when there's no aggregator
  netfilter: ipset: Rework long task execution when adding/deleting entries
  netfilter: ipset: fix hash:net,port,net hang with /0 subnet
  net: sparx5: Fix reading of the MAC address
  vxlan: Fix memory leaks in error path
  net: sched: htb: fix htb_classify() kernel-doc
  net: sched: cbq: dont intepret cls results when asked to drop
  net: sched: atm: dont intepret cls results when asked to drop
  dt-bindings: net: marvell,orion-mdio: Fix examples
  dt-bindings: net: sun8i-emac: Add phy-supply property
  net: ipa: use proper endpoint mask for suspend
  selftests: net: return non-zero for failures reported in arp_ndisc_evict_nocarrier
  ...

Pull gpio fixes from Bartosz Golaszewski:
 "A reference leak fix, two fixes for using uninitialized variables and
  more drivers converted to using immutable irqchips:

   - fix a reference leak in gpio-sifive

   - fix a potential use of an uninitialized variable in core gpiolib

   - fix a potential use of an uninitialized variable in gpio-pca953x

   - make GPIO irqchips immutable in gpio-pmic-eic-sprd, gpio-eic-sprd
     and gpio-sprd"

* tag 'gpio-fixes-for-v6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpio: sifive: Fix refcount leak in sifive_gpio_probe
  gpio: sprd: Make the irqchip immutable
  gpio: pmic-eic-sprd: Make the irqchip immutable
  gpio: eic-sprd: Make the irqchip immutable
  gpio: pca953x: avoid to use uninitialized value pinctrl
  gpiolib: Fix using uninitialized lookup-flags on ACPI platforms

Pull fbdev fixes from Helge Deller:

 - Fix Matrox G200eW initialization failure

 - Fix build failure of offb driver when built as module

 - Optimize stack usage in omapfb

* tag 'fbdev-for-6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
  fbdev: omapfb: avoid stack overflow warning
  fbdev: matroxfb: G200eW: Increase max memory from 1 MB to 16 MB
  fbdev: atyfb: use strscpy() to instead of strncpy()
  fbdev: omapfb: use strscpy() to instead of strncpy()
  fbdev: make offb driver tristate

The dsi_irq_stats structure is a little too big to fit on the
stack of a 32-bit task, depending on the specific gcc options:

fbdev/omap2/omapfb/dss/dsi.c: In function 'dsi_dump_dsidev_irqs':
fbdev/omap2/omapfb/dss/dsi.c:1621:1: error: the frame size of 1064 bytes is larger than 1024 bytes [-Werror=frame-larger-than=]

Since this is only a debugfs file, performance is not critical,
so just dynamically allocate it, and print an error message
in there in place of a failure code when the allocation fails.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Helge Deller <deller@gmx.de>

When linktype is unknown or kzalloc failed in cfctrl_linkup_request(),
pkt is not released. Add release process to error path.

Fixes: b482cd20 ("net-caif: add CAIF core protocol stack")
Fixes: 8d545c8f ("caif: Disconnect without waiting for response")
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20230104065146.1153009-1-shaozhengchao@huawei.comSigned-off-by: Paolo Abeni <pabeni@redhat.com>

Because ICMP handlers run from softirq contexts,
they must not use current thread task_frag.

Previously, all sockets allocated by inet_ctl_sock_create()
would use the per-socket page fragment, with no chance of
recursion.

Fixes: 98123866 ("Treewide: Stop corrupting socket's task_frag")
Reported-by: syzbot+bebc6f1acdf4cbb79b03@syzkaller.appspotmail.com
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Benjamin Coddington <bcodding@redhat.com>
Acked-by: Guillaume Nault <gnault@redhat.com>
Link: https://lore.kernel.org/r/20230103192736.454149-1-edumazet@google.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

When an ULP-enabled socket enters the LISTEN status, the listener ULP data
pointer is copied inside the child/accepted sockets by sk_clone_lock().

The relevant ULP can take care of de-duplicating the context pointer via
the clone() operation, but only MPTCP and SMC implement such op.

Other ULPs may end-up with a double-free at socket disposal time.

We can't simply clear the ULP data at clone time, as TLS replaces the
socket ops with custom ones assuming a valid TLS ULP context is
available.

Instead completely prevent clone-less ULP sockets from entering the
LISTEN status.

Fixes: 734942cc ("tcp: ULP infrastructure")
Reported-by: slipper <slipper.alive@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Link: https://lore.kernel.org/r/4b80c3d1dbe3d0ab072f80450c202d9bc88b4b03.1672740602.git.pabeni@redhat.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

By default, qed_mcp_cmd_and_union() delays 10us at a time in a loop
that can run 500K times, so calls to qed_mcp_nvm_rd_cmd()
may block the current thread for over 5s.
We observed thread scheduling delays over 700ms in production,
with stacktraces pointing to this code as the culprit.

qed_mcp_trace_dump() is called from ethtool, so sleeping is permitted.
It already can sleep in qed_mcp_halt(), which calls qed_mcp_cmd().
Add a "can sleep" parameter to qed_find_nvram_image() and
qed_nvram_read() so they can sleep during qed_mcp_trace_dump().
qed_mcp_trace_get_meta_info() and qed_mcp_trace_read_meta(),
called only by qed_mcp_trace_dump(), allow these functions to sleep.
I can't tell if the other caller (qed_grc_dump_mcp_hw_dump()) can sleep,
so keep b_can_sleep set to false when it calls these functions.

An example stacktrace from a custom warning we added to the kernel
showing a thread that has not scheduled despite long needing resched:
[ 2745.362925,17] ------------[ cut here ]------------
[ 2745.362941,17] WARNING: CPU: 23 PID: 5640 at arch/x86/kernel/irq.c:233 do_IRQ+0x15e/0x1a0()
[ 2745.362946,17] Thread not rescheduled for 744 ms after irq 99
[ 2745.362956,17] Modules linked in: ...
[ 2745.363339,17] CPU: 23 PID: 5640 Comm: lldpd Tainted: P           O    4.4.182+ #202104120910+6d1da174272d.61x
[ 2745.363343,17] Hardware name: FOXCONN MercuryB/Quicksilver Controller, BIOS H11P1N09 07/08/2020
[ 2745.363346,17]  0000000000000000 ffff885ec07c3ed8 ffffffff8131eb2f ffff885ec07c3f20
[ 2745.363358,17]  ffffffff81d14f64 ffff885ec07c3f10 ffffffff81072ac2 ffff88be98ed0000
[ 2745.363369,17]  0000000000000063 0000000000000174 0000000000000074 0000000000000000
[ 2745.363379,17] Call Trace:
[ 2745.363382,17]  <IRQ>  [<ffffffff8131eb2f>] dump_stack+0x8e/0xcf
[ 2745.363393,17]  [<ffffffff81072ac2>] warn_slowpath_common+0x82/0xc0
[ 2745.363398,17]  [<ffffffff81072b4c>] warn_slowpath_fmt+0x4c/0x50
[ 2745.363404,17]  [<ffffffff810d5a8e>] ? rcu_irq_exit+0xae/0xc0
[ 2745.363408,17]  [<ffffffff817c99fe>] do_IRQ+0x15e/0x1a0
[ 2745.363413,17]  [<ffffffff817c7ac9>] common_interrupt+0x89/0x89
[ 2745.363416,17]  <EOI>  [<ffffffff8132aa74>] ? delay_tsc+0x24/0x50
[ 2745.363425,17]  [<ffffffff8132aa04>] __udelay+0x34/0x40
[ 2745.363457,17]  [<ffffffffa04d45ff>] qed_mcp_cmd_and_union+0x36f/0x7d0 [qed]
[ 2745.363473,17]  [<ffffffffa04d5ced>] qed_mcp_nvm_rd_cmd+0x4d/0x90 [qed]
[ 2745.363490,17]  [<ffffffffa04e1dc7>] qed_mcp_trace_dump+0x4a7/0x630 [qed]
[ 2745.363504,17]  [<ffffffffa04e2556>] ? qed_fw_asserts_dump+0x1d6/0x1f0 [qed]
[ 2745.363520,17]  [<ffffffffa04e4ea7>] qed_dbg_mcp_trace_get_dump_buf_size+0x37/0x80 [qed]
[ 2745.363536,17]  [<ffffffffa04ea881>] qed_dbg_feature_size+0x61/0xa0 [qed]
[ 2745.363551,17]  [<ffffffffa04eb427>] qed_dbg_all_data_size+0x247/0x260 [qed]
[ 2745.363560,17]  [<ffffffffa0482c10>] qede_get_regs_len+0x30/0x40 [qede]
[ 2745.363566,17]  [<ffffffff816c9783>] ethtool_get_drvinfo+0xe3/0x190
[ 2745.363570,17]  [<ffffffff816cc152>] dev_ethtool+0x1362/0x2140
[ 2745.363575,17]  [<ffffffff8109bcc6>] ? finish_task_switch+0x76/0x260
[ 2745.363580,17]  [<ffffffff817c2116>] ? __schedule+0x3c6/0x9d0
[ 2745.363585,17]  [<ffffffff810dbd50>] ? hrtimer_start_range_ns+0x1d0/0x370
[ 2745.363589,17]  [<ffffffff816c1e5b>] ? dev_get_by_name_rcu+0x6b/0x90
[ 2745.363594,17]  [<ffffffff816de6a8>] dev_ioctl+0xe8/0x710
[ 2745.363599,17]  [<ffffffff816a58a8>] sock_do_ioctl+0x48/0x60
[ 2745.363603,17]  [<ffffffff816a5d87>] sock_ioctl+0x1c7/0x280
[ 2745.363608,17]  [<ffffffff8111f393>] ? seccomp_phase1+0x83/0x220
[ 2745.363612,17]  [<ffffffff811e3503>] do_vfs_ioctl+0x2b3/0x4e0
[ 2745.363616,17]  [<ffffffff811e3771>] SyS_ioctl+0x41/0x70
[ 2745.363619,17]  [<ffffffff817c6ffe>] entry_SYSCALL_64_fastpath+0x1e/0x79
[ 2745.363622,17] ---[ end trace f6954aa440266421 ]---

Fixes: c965db44 ("qed: Add support for debug data collection")
Signed-off-by: Caleb Sander <csander@purestorage.com>
Acked-by: Alok Prasad <palok@marvell.com>
Link: https://lore.kernel.org/r/20230103233021.1457646-1-csander@purestorage.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Alexei Starovoitov says:

====================
bpf 2023-01-04

We've added 5 non-merge commits during the last 8 day(s) which contain
a total of 5 files changed, 112 insertions(+), 18 deletions(-).

The main changes are:

1) Always use maximal size for copy_array in the verifier to fix
   KASAN tracking, from Kees.

2) Fix bpf task iterator walking through dead tasks, from Kui-Feng.

3) Make sure livepatch and bpf fexit can coexist, from Chuang.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  bpf: Always use maximal size for copy_array()
  selftests/bpf: add a test for iter/task_vma for short-lived processes
  bpf: keep a reference to the mm, in case the task is dead.
  selftests/bpf: Temporarily disable part of btf_dump:var_data test.
  bpf: Fix panic due to wrong pageattr of im->image
====================

Link: https://lore.kernel.org/r/20230104215500.79435-1-alexei.starovoitov@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

Pull virtio updates from Michael Tsirkin:
 "Mostly fixes all over the place, a couple of cleanups"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (32 commits)
  virtio_blk: Fix signedness bug in virtblk_prep_rq()
  vdpa_sim_net: should not drop the multicast/broadcast packet
  vdpasim: fix memory leak when freeing IOTLBs
  vdpa: conditionally fill max max queue pair for stats
  vdpa/vp_vdpa: fix kfree a wrong pointer in vp_vdpa_remove
  vduse: Validate vq_num in vduse_validate_config()
  tools/virtio: remove smp_read_barrier_depends()
  tools/virtio: remove stray characters
  vhost_vdpa: fix the crash in unmap a large memory
  virtio: Implementing attribute show with sysfs_emit
  virtio-crypto: fix memory leak in virtio_crypto_alg_skcipher_close_session()
  tools/virtio: Variable type completion
  vdpa_sim: fix vringh initialization in vdpasim_queue_ready()
  virtio_blk: use UINT_MAX instead of -1U
  vhost-vdpa: fix an iotlb memory leak
  vhost: fix range used in translate_desc()
  vringh: fix range used in iotlb_translate()
  vhost/vsock: Fix error handling in vhost_vsock_init()
  vdpa_sim: fix possible memory leak in vdpasim_net_init() and vdpasim_blk_init()
  tools: Delete the unneeded semicolon after curly braces
  ...

Pull misc x86 fixes from Ingo Molnar:
 "Fix a double-free bug, a binutils warning, a header namespace clash
  and a bug in ib_prctl_set()"

* tag 'x86-urgent-2023-01-04' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/bugs: Flush IBP in ib_prctl_set()
  x86/insn: Avoid namespace clash by separating instruction decoder MMIO type from MMIO trace type
  x86/asm: Fix an assembler warning with current binutils
  x86/kexec: Fix double-free of elf header buffer

Pull f2fs fixes from Jaegeuk Kim:

 - fix a null pointer dereference in f2fs_issue_flush, which occurs by
   the combination of mount/remount options.

 - fix a bug in per-block age-based extent_cache newly introduced in
   6.2-rc1, which reported a wrong age information in extent_cache.

 - fix a kernel panic if extent_tree was not created, which was caught
   by a wrong BUG_ON

* tag 'f2fs-fix-6.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs:
  f2fs: let's avoid panic if extent_tree is not created
  f2fs: should use a temp extent_info for lookup
  f2fs: don't mix to use union values in extent_info
  f2fs: initialize extent_cache parameter
  f2fs: fix to avoid NULL pointer dereference in f2fs_issue_flush()

Pull nfsd fixes from Chuck Lever:

 - Fix a filecache UAF during NFSD shutdown

 - Avoid exposing automounted mounts on NFS re-exports

* tag 'nfsd-6.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
  nfsd: fix handling of readdir in v4root vs. mount upcall timeout
  nfsd: shut down the NFSv4 state objects before the filecache

We missed the window between the TIF flag update and the next reschedule.
Signed-off-by: Rodrigo Branco <bsdaemon@google.com>
Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: <stable@vger.kernel.org>

Vivek has decided to transfer the maintainership of the VMware virtual
PTP clock driver (ptp_vmw) to Srivatsa and Deep. Update the
MAINTAINERS file to reflect this change, and also add Alexey as a
reviewer for the driver.
Signed-off-by: Srivatsa S. Bhat (VMware) <srivatsa@csail.mit.edu>
Acked-by: Vivek Thampi <vivek@vivekthampi.com>
Acked-by: Deep Shah <sdeep@vmware.com>
Acked-by: Alexey Makhalov <amakhalov@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Both <linux/mmiotrace.h> and <asm/insn-eval.h> define various MMIO_ enum constants,
whose namespace overlaps.

Rename the <asm/insn-eval.h> ones to have a INSN_ prefix, so that the headers can be
used from the same source file.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230101162910.710293-2-Jason@zx2c4.com

This patch avoids the below panic.

pc : __lookup_extent_tree+0xd8/0x760
lr : f2fs_do_write_data_page+0x104/0x87c
sp : ffffffc010cbb3c0
x29: ffffffc010cbb3e0 x28: 0000000000000000
x27: ffffff8803e7f020 x26: ffffff8803e7ed40
x25: ffffff8803e7f020 x24: ffffffc010cbb460
x23: ffffffc010cbb480 x22: 0000000000000000
x21: 0000000000000000 x20: ffffffff22e90900
x19: 0000000000000000 x18: ffffffc010c5d080
x17: 0000000000000000 x16: 0000000000000020
x15: ffffffdb1acdbb88 x14: ffffff888759e2b0
x13: 0000000000000000 x12: ffffff802da49000
x11: 000000000a001200 x10: ffffff8803e7ed40
x9 : ffffff8023195800 x8 : ffffff802da49078
x7 : 0000000000000001 x6 : 0000000000000000
x5 : 0000000000000006 x4 : ffffffc010cbba28
x3 : 0000000000000000 x2 : ffffffc010cbb480
x1 : 0000000000000000 x0 : ffffff8803e7ed40
Call trace:
 __lookup_extent_tree+0xd8/0x760
 f2fs_do_write_data_page+0x104/0x87c
 f2fs_write_single_data_page+0x420/0xb60
 f2fs_write_cache_pages+0x418/0xb1c
 __f2fs_write_data_pages+0x428/0x58c
 f2fs_write_data_pages+0x30/0x40
 do_writepages+0x88/0x190
 __writeback_single_inode+0x48/0x448
 writeback_sb_inodes+0x468/0x9e8
 __writeback_inodes_wb+0xb8/0x2a4
 wb_writeback+0x33c/0x740
 wb_do_writeback+0x2b4/0x400
 wb_workfn+0xe4/0x34c
 process_one_work+0x24c/0x5bc
 worker_thread+0x3e8/0xa50
 kthread+0x150/0x1b4
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Otherwise, __lookup_extent_tree() will override the given extent_info which will
be used by caller.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

Let's explicitly use the defined values in block_age case only.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>