L2CAP_ECRED_CONN_REQ shall be responded with L2CAP_ECRED_CONN_RSP not
L2CAP_LE_CONN_RSP:

L2CAP LE EATT Server - Reject - run
  Listening for connections
  New client connection with handle 0x002a
  Sending L2CAP Request from client
  Client received response code 0x15
  Unexpected L2CAP response code (expected 0x18)
L2CAP LE EATT Server - Reject - test failed

> ACL Data RX: Handle 42 flags 0x02 dlen 26
      LE L2CAP: Enhanced Credit Connection Request (0x17) ident 1 len 18
        PSM: 39 (0x0027)
        MTU: 64
        MPS: 64
        Credits: 5
        Source CID: 65
        Source CID: 66
        Source CID: 67
        Source CID: 68
        Source CID: 69
< ACL Data TX: Handle 42 flags 0x00 dlen 16
      LE L2CAP: LE Connection Response (0x15) ident 1 len 8
        invalid size
        00 00 00 00 00 00 06 00

L2CAP LE EATT Server - Reject - run
  Listening for connections
  New client connection with handle 0x002a
  Sending L2CAP Request from client
  Client received response code 0x18
L2CAP LE EATT Server - Reject - test passed

Fixes: 15f02b91

 ("Bluetooth: L2CAP: Add initial code for Enhanced Credit Based Mode")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

On most devices using the btqcomsmd driver (e.g. the DragonBoard 410c
and other devices based on the Qualcomm MSM8916/MSM8909/... SoCs)
the Bluetooth firmware seems to become unresponsive for a while after
setting the BD address. On recent kernel versions (at least 5.17+)
this often causes timeouts for subsequent commands, e.g. the HCI reset
sent by the Bluetooth core during initialization:

    Bluetooth: hci0: Opcode 0x c03 failed: -110

Unfortunately this behavior does not seem to be documented anywhere.
Experimentation suggests that the minimum necessary delay to avoid
the problem is ~150us. However, to be sure add a sleep for > 1ms
in case it is a bit longer on other firmware versions.

Older kernel versions are likely also affected, although perhaps with
slightly different errors or less probability. Side effects can easily
hide the issue in most cases, e.g. unrelated incoming interrupts that
cause the necessary delay.

Fixes: 1511cc75

 ("Bluetooth: Introduce Qualcomm WCNSS SMD based HCI driver")
Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

Older platforms and Virtual platforms which doesn't have support for
bluetooth device in ACPI firmware will not have valid ACPI handle.
Check for validity of handle before accessing.

dmesg log from simics environment (virtual platform):

BUG: unable to handle kernel NULL pointer dereference at
0000000000000018
IP: acpi_ns_walk_namespace+0x5c/0x278
PGD 0 P4D 0
Oops: 0000 [#1] SMP PTI
Modules linked in: bnep intel_powerclamp coretemp kvm_intel
kvm irqbypass intel_cstate input_leds joydev serio_raw mac_hid
btusb(OE) btintel(OE) bluetooth(OE) lpc_ich compat(OE) ecdh_generic
i7core_edac i5500_temp shpchp binfmt_misc sch_fq_codel parport_pc ppdev
lp parport ip_tables x_tables autofs4 hid_generic usbhid hid e1000e
psmouse ahci pata_acpi libahci ptp pps_core floppy
CPU: 0 PID: 35 Comm: kworker/u3:0 Tainted: G           OE
4.15.0-140-generic #144-Ubuntu
Hardware name: Simics Simics, BIOS Simics 01/01/2011
Workqueue: hci0 hci_power_on [bluetooth]
RIP: 0010:acpi_ns_walk_namespace+0x5c/0x278
RSP: 0000:ffffaa9c0049bba8 EFLAGS: 00010246
RAX: 0000000000000001 RBX: 0000000000001001 RCX: 0000000000000010
RDX: ffffffff92ea7e27 RSI: ffffffff92ea7e10 RDI: 00000000000000c8
RBP: ffffaa9c0049bbf8 R08: 0000000000000000 R09: ffffffffc05b39d0
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000000 R14: ffffffffc05b39d0 R15: ffffaa9c0049bc70
FS:  0000000000000000(0000) GS:ffff8be73fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000018 CR3: 0000000075f0e000 CR4: 00000000000006f0

Fixes: 294d749b

 ("Bluetooth: btintel: Iterate only bluetooth device ACPI entries")
Signed-off-by: Kiran K <kiran.k@intel.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

The Bluetooth mesh experimental feature enable was requiring the
controller to be powered off in order for the Enable to work. Mesh is
supposed to be enablable regardless of the controller state, and created
an unintended requirement that the mesh daemon be started before the
classic bluetoothd daemon.

Fixes: af6bcc19

 ("Bluetooth: Add experimental wrapper for MGMT based mesh")
Signed-off-by: Brian Gix <brian.gix@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

There is a potential race condition in hci_cmd_sync_work and
hci_cmd_sync_clear, and could lead to use-after-free. For instance,
hci_cmd_sync_work is added to the 'req_workqueue' after cancel_work_sync
The entry of 'cmd_sync_work_list' may be freed in hci_cmd_sync_clear, and
causing kernel panic when it is used in 'hci_cmd_sync_work'.

Here's the call trace:

dump_stack_lvl+0x49/0x63
print_report.cold+0x5e/0x5d3
? hci_cmd_sync_work+0x282/0x320
kasan_report+0xaa/0x120
? hci_cmd_sync_work+0x282/0x320
__asan_report_load8_noabort+0x14/0x20
hci_cmd_sync_work+0x282/0x320
process_one_work+0x77b/0x11c0
? _raw_spin_lock_irq+0x8e/0xf0
worker_thread+0x544/0x1180
? poll_idle+0x1e0/0x1e0
kthread+0x285/0x320
? process_one_work+0x11c0/0x11c0
? kthread_complete_and_exit+0x30/0x30
ret_from_fork+0x22/0x30
</TASK>

Allocated by task 266:
kasan_save_stack+0x26/0x50
__kasan_kmalloc+0xae/0xe0
kmem_cache_alloc_trace+0x191/0x350
hci_cmd_sync_queue+0x97/0x2b0
hci_update_passive_scan+0x176/0x1d0
le_conn_complete_evt+0x1b5/0x1a00
hci_le_conn_complete_evt+0x234/0x340
hci_le_meta_evt+0x231/0x4e0
hci_event_packet+0x4c5/0xf00
hci_rx_work+0x37d/0x880
process_one_work+0x77b/0x11c0
worker_thread+0x544/0x1180
kthread+0x285/0x320
ret_from_fork+0x22/0x30

Freed by task 269:
kasan_save_stack+0x26/0x50
kasan_set_track+0x25/0x40
kasan_set_free_info+0x24/0x40
____kasan_slab_free+0x176/0x1c0
__kasan_slab_free+0x12/0x20
slab_free_freelist_hook+0x95/0x1a0
kfree+0xba/0x2f0
hci_cmd_sync_clear+0x14c/0x210
hci_unregister_dev+0xff/0x440
vhci_release+0x7b/0xf0
__fput+0x1f3/0x970
____fput+0xe/0x20
task_work_run+0xd4/0x160
do_exit+0x8b0/0x22a0
do_group_exit+0xba/0x2a0
get_signal+0x1e4a/0x25b0
arch_do_signal_or_restart+0x93/0x1f80
exit_to_user_mode_prepare+0xf5/0x1a0
syscall_exit_to_user_mode+0x26/0x50
ret_from_fork+0x15/0x30

Fixes: 6a98e383

 ("Bluetooth: Add helper for serialized HCI command execution")
Cc: stable@vger.kernel.org
Signed-off-by: Min Li <lm0963hack@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

Current flow interates over entire ACPI table entries looking for
Bluetooth Per Platform Antenna Gain(PPAG) entry. This patch iterates
over ACPI entries relvant to Bluetooth device only.

Fixes: c585a92b

 ("Bluetooth: btintel: Set Per Platform Antenna Gain(PPAG)")
Signed-off-by: Kiran K <kiran.k@intel.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

Use correct HCI ISO data packet header struct when the packet has
timestamp. The timestamp, when present, goes before the other fields
(Core v5.3 4E 5.4.5), so the structs are not compatible.

Fixes: ccf74f23

 ("Bluetooth: Add BTPROTO_ISO socket type")
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

This removes the code introduced by
14202eff as hci_recv_frame is now able
to detect ACL packets that are in fact ISO packets.

Fixes: 14202eff

 ("Bluetooth: btusb: Detect if an ACL packet is in fact an ISO packet")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

Because some transports don't have a dedicated type for ISO packets
(see 14202eff) they may use ACL type
when in fact they are ISO packets.

In the past this was left for the driver to detect such thing but it
creates a problem when using the likes of btproxy when used by a VM as
the host would not be aware of the connection the guest is doing it
won't be able to detect such behavior, so this make bt_recv_frame
detect when it happens as it is the common interface to all drivers
including guest VMs.

Fixes: 14202eff

 ("Bluetooth: btusb: Detect if an ACL packet is in fact an ISO packet")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

The address resolution should be disabled during the active scan,
so all the advertisements can reach the host. The advertising
has to be paused before disabling the address resolution,
because the advertising will prevent any changes to the resolving
list and the address resolution status. Skipping this will cause
the hci error and the discovery failure.

According to the bluetooth specification:
"7.8.44 LE Set Address Resolution Enable command

This command shall not be used when:
- Advertising (other than periodic advertising) is enabled,
- Scanning is enabled, or
- an HCI_LE_Create_Connection, HCI_LE_Extended_Create_Connection, or
  HCI_LE_Periodic_Advertising_Create_Sync command is outstanding."

If the host is using RPA, the controller needs to generate RPA for
the advertising, so the advertising must remain paused during the
active scan.

If the host is not using RPA, the advertising can be resumed after
disabling the address resolution.

Fixes: 9afc675e

 ("Bluetooth: hci_sync: allow advertise when scan without RPA")
Signed-off-by: Zhengping Jiang <jiangzp@google.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

Local port is a 10-bit number, but it was mistakenly stored in a u8,
resulting in firmware errors when using a netdev corresponding to a
local port higher than 255.

Fix by storing the local port in u16, as is done in the rest of the
code.

Fixes: bf73904f

 ("mlxsw: Add support for 802.1Q FID family")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/eace1f9d96545ab8a2775db857cb7e291a9b166b.1679398549.git.petrm@nvidia.com


Signed-off-by: Paolo Abeni <pabeni@redhat.com>

The DMA address returned by dma_map_single() should be checked with
dma_mapping_error(). Fix it accordingly.

Fixes: efcce839

 ("[PATCH] macsonic/jazzsonic network drivers update")
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@linux-m68k.org>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/6645a4b5c1e364312103f48b7b36783b94e197a2.1679370343.git.fthain@linux-m68k.org


Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Vladimir Oltean says:

====================
Fix trainwreck with Ocelot switch statistics counters

While testing the patch set for preemptible traffic classes with some
controlled traffic and measuring counter deltas:
https://lore.kernel.org/netdev/20230220122343.1156614-1-vladimir.oltean@nxp.com/

I noticed that in the output of "ethtool -S swp0 --groups eth-mac
eth-phy eth-ctrl rmon -- --src emac | grep -v ': 0'", the TX counters
were off. Quickly I realized that their values were permutated by 1
compared to their names, and that for example
tx-rmon-etherStatsPkts64to64Octets was incrementing when
tx-rmon-etherStatsPkts65to127Octets should have.

Initially I suspected something having to do with the bulk reading
logic, and indeed I found a bug there (fixed as 1/3), but that was not
the source of the problems. Instead it revealed other problems.

While dumping the regions created by the driver on my switch, I figured
out that it sees a discontinuity which shouldn't have existed between
reg 0x278 and reg 0x280.

Discontinuity between last reg 0x0 and new reg 0x0, creating new region
Discontinuity between last reg 0x108 and new reg 0x200, creating new region
Discontinuity between last reg 0x278 and new reg 0x280, creating new region
Discontinuity between last reg 0x2b0 and new reg 0x400, creating new region
region of 67 contiguous counters starting with SYS:STAT:CNT[0x000]
region of 31 contiguous counters starting with SYS:STAT:CNT[0x080]
region of 13 contiguous counters starting with SYS:STAT:CNT[0x0a0]
region of 18 contiguous counters starting with SYS:STAT:CNT[0x100]

That is where TX_MM_HOLD should have been, and that was the bug, since
it was missing. After adding it, the regions look like this and the
off-by-one issue is resolved:

Discontinuity between last reg 0x000000 and new reg 0x000000, creating new region
Discontinuity between last reg 0x000108 and new reg 0x000200, creating new region
Discontinuity between last reg 0x0002b0 and new reg 0x000400, creating new region
region of 67 contiguous counters starting with SYS:STAT:CNT[0x000]
region of 45 contiguous counters starting with SYS:STAT:CNT[0x080]
region of 18 contiguous counters starting with SYS:STAT:CNT[0x100]

However, as I am thinking out loud, it should have not reported the
other counters as off by one even when skipping TX_MM_HOLD... after all,
on Ocelot/Seville, there are more counters which need to be skipped.

Which is when I investigated and noticed the bug solved in 2/3.
I've validated that both on native VSC9959 (which uses
ocelot_mm_stats_layout) as well as by faking the other switches by
making VSC9959 use the plain ocelot_stats_layout.

To summarize: on all Ocelot switches, the TX counters and drop counters
are completely broken. The RX counters are mostly fine.

With this occasion, I have collected more cleanup patches in this area,
which I'm going to submit after the net -> net-next merge.
====================

Link: https://lore.kernel.org/r/20230321010325.897817-1-vladimir.oltean@nxp.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>

The lack of a definition for this counter is what initially prompted me
to investigate a problem which really manifested itself as the previous
change, "net: mscc: ocelot: fix transfer from region->buf to ocelot->stats".

When TX_MM_HOLD is defined in enum ocelot_stat but not in struct
ocelot_stat_layout ocelot_mm_stats_layout, this creates a hole, which
due to the aforementioned bug, makes all counters following TX_MM_HOLD
be recorded off by one compared to their correct position. So for
example, a non-zero TX_PMAC_OCTETS would be reported as TX_MERGE_FRAGMENTS,
TX_PMAC_UNICAST would be reported as TX_PMAC_OCTETS, TX_PMAC_64 would be
reported as TX_PMAC_PAUSE, etc etc. This is because the size of the hole
(1) is much smaller than the size of the region, so the phenomenon where
the stats are off-by-one, rather than lost, prevails.

However, the phenomenon where stats are lost can be seen too, for
example with DROP_LOCAL, which is at the beginning of its own region
(offset 0x000400 vs the previous 0x0002b0 constitutes a discontinuity).
This is also reported as off by one and saved to TX_PMAC_1527_MAX, but
that counter is not reported to the unstructured "ethtool -S", as
opposed to DROP_LOCAL which is (as "drop_local").

Fixes: ab3f97a9

 ("net: mscc: ocelot: export ethtool MAC Merge stats for Felix VSC9959")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

To understand the problem, we need some definitions.

The driver is aware of multiple counters (enum ocelot_stat), yet not all
switches supported by the driver implement all counters. There are 2
statistics layouts: ocelot_stats_layout and ocelot_mm_stats_layout, the
latter having 36 counters more than the former.

ocelot->stats[] is not a compact array, i.e. there are elements within
it which are not going to be populated for ocelot_stats_layout. On the
other hand, ocelot->stats[] is easily indexable, for example "tx_octets"
for port 3 can be found at ocelot->stats[3 * OCELOT_NUM_STATS +
OCELOT_STAT_TX_OCTETS], and that is why we keep it sparse.

Regions, as created by ocelot_prepare_stats_regions(), are compact
(every element from region->buf will correspond to a counter that is
present in this switch's layout) but are not easily indexable.

Let's define holes as the ranges of values of enum ocelot_stat for which
ocelot_stats_layout doesn't have a "reg" defined. For example, there is
a hole between OCELOT_STAT_RX_GREEN_PRIO_7 and OCELOT_STAT_TX_OCTETS
which is of 23 elements that are only present on ocelot_mm_stats_layout,
and as such, they are also present in enum ocelot_stat. Let's define the
left extremity of the hole - the last enum ocelot_stat still defined -
as A (in this case OCELOT_STAT_RX_GREEN_PRIO_7) and the right extremity -
the first enum ocelot_stat that is defined after a series of undefined
ones - as B (in this case OCELOT_STAT_TX_OCTETS).

There is a bug in the procedure which transfers stats from region->buf[]
to ocelot->stats[].

For each hole in the ocelot_stats_layout, the logic transfers the stats
starting with enum ocelot_stat B to ocelot->stats[] index A + 1. So all
stats after a hole are saved to a position which is off by B - A + 1
elements.

This causes 2 kinds of issues:
(a) counters which shouldn't increment increment
(b) counters which should increment don't

Holes in the ocelot_stat_layout automatically imply the end of a region
and the beginning of a new one; however the reverse is not necessarily
true. For example, for ocelot_mm_stat_layout, there could be multiple
regions (which indicate discontinuities in register addresses) while
there is no hole (which indicates discontinuities in enum ocelot_stat
values).

In the example above, the stats from the second region->buf[] are not
transferred to ocelot->stats starting with index
"port * OCELOT_NUM_STATS + OCELOT_STAT_TX_OCTETS" as they should, but
rather, starting with element
"port * OCELOT_NUM_STATS + OCELOT_STAT_RX_GREEN_PRIO_7 + 1".

That stats[] array element is not reported to user space for switches
that use ocelot_stat_layout, and that is how issue (b) occurs.

However, if the length of the second region is larger than the hole,
then some stats will start to be transferred to the ocelot->stats[]
indices which *are* reported to user space, but those indices contain
wrong values (corresponding to unexpected counters). This is how issue
(a) occurs.

The procedure, as it was introduced in commit d87b1c08 ("net: mscc:
ocelot: use bulk reads for stats"), was not buggy, because there were no
holes in the struct ocelot_stat_layout instances at that time. The
problem is that when those holes were introduced, the function was not
updated to take them into consideration.

To update the procedure, we need to know, for each region, which enum
ocelot_stat corresponds to its region->base. We have no way of deducing
that based on the contents of struct ocelot_stats_region, so we need to
add this information.

Fixes: ab3f97a9

 ("net: mscc: ocelot: export ethtool MAC Merge stats for Felix VSC9959")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

The blamed commit changed struct ocelot_stat_layout :: "u32 offset" to
"u32 reg".

However, "u32 reg" is not quite a register address, but an enum
ocelot_reg, which in itself encodes an enum ocelot_target target in the
upper bits, and an index into the ocelot->map[target][] array in the
lower bits.

So, whereas the previous code comparison between stats_layout[i].offset
and last + 1 was correct (because those "offsets" at the time were
32-bit relative addresses), the new code, comparing layout[i].reg to
last + 4 is not correct, because the "reg" here is an enum/index, not an
actual register address.

What we want to compare are indeed register addresses, but to do that,
we need to actually go through the same motions as
__ocelot_bulk_read_ix() itself.

With this bug, all statistics counters are deemed by
ocelot_prepare_stats_regions() as constituting their own region.
(Truncated) log on VSC9959 (Felix) below (prints added by me):

Before:

region of 1 contiguous counters starting with SYS:STAT:CNT[0x000]
region of 1 contiguous counters starting with SYS:STAT:CNT[0x001]
region of 1 contiguous counters starting with SYS:STAT:CNT[0x002]
...
region of 1 contiguous counters starting with SYS:STAT:CNT[0x041]
region of 1 contiguous counters starting with SYS:STAT:CNT[0x042]
region of 1 contiguous counters starting with SYS:STAT:CNT[0x080]
region of 1 contiguous counters starting with SYS:STAT:CNT[0x081]
...
region of 1 contiguous counters starting with SYS:STAT:CNT[0x0ac]
region of 1 contiguous counters starting with SYS:STAT:CNT[0x100]
region of 1 contiguous counters starting with SYS:STAT:CNT[0x101]
...
region of 1 contiguous counters starting with SYS:STAT:CNT[0x111]

After:

region of 67 contiguous counters starting with SYS:STAT:CNT[0x000]
region of 45 contiguous counters starting with SYS:STAT:CNT[0x080]
region of 18 contiguous counters starting with SYS:STAT:CNT[0x100]

Since commit d87b1c08 ("net: mscc: ocelot: use bulk reads for
stats") intended bulking as a performance improvement, and since now,
with trivial-sized regions, performance is even worse than without
bulking at all, this could easily qualify as a performance regression.

Fixes: d4c36765

 ("net: mscc: ocelot: keep ocelot_stat_layout by reg address, not offset")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Colin Foster <colin.foster@in-advantage.com>
Tested-by: Colin Foster <colin.foster@in-advantage.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Drivers should not assume skb_mac_header(skb) == skb->data in their
ndo_start_xmit().

Use skb_network_offset() and skb_transport_offset() which
better describe what is needed in erspan_fb_xmit() and
ip6erspan_tunnel_xmit()

syzbot reported:
WARNING: CPU: 0 PID: 5083 at include/linux/skbuff.h:2873 skb_mac_header include/linux/skbuff.h:2873 [inline]
WARNING: CPU: 0 PID: 5083 at include/linux/skbuff.h:2873 ip6erspan_tunnel_xmit+0x1d9c/0x2d90 net/ipv6/ip6_gre.c:962
Modules linked in:
CPU: 0 PID: 5083 Comm: syz-executor406 Not tainted 6.3.0-rc2-syzkaller-00866-gd4671cb96fa3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:skb_mac_header include/linux/skbuff.h:2873 [inline]
RIP: 0010:ip6erspan_tunnel_xmit+0x1d9c/0x2d90 net/ipv6/ip6_gre.c:962
Code: 04 02 41 01 de 84 c0 74 08 3c 03 0f 8e 1c 0a 00 00 45 89 b4 24 c8 00 00 00 c6 85 77 fe ff ff 01 e9 33 e7 ff ff e8 b4 27 a1 f8 <0f> 0b e9 b6 e7 ff ff e8 a8 27 a1 f8 49 8d bf f0 0c 00 00 48 b8 00
RSP: 0018:ffffc90003b2f830 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 000000000000ffff RCX: 0000000000000000
RDX: ffff888021273a80 RSI: ffffffff88e1bd4c RDI: 0000000000000003
RBP: ffffc90003b2f9d8 R08: 0000000000000003 R09: 000000000000ffff
R10: 000000000000ffff R11: 0000000000000000 R12: ffff88802b28da00
R13: 00000000000000d0 R14: ffff88807e25b6d0 R15: ffff888023408000
FS: 0000555556a61300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e5b11eb6e8 CR3: 0000000027c1b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__netdev_start_xmit include/linux/netdevice.h:4900 [inline]
netdev_start_xmit include/linux/netdevice.h:4914 [inline]
__dev_direct_xmit+0x504/0x730 net/core/dev.c:4300
dev_direct_xmit include/linux/netdevice.h:3088 [inline]
packet_xmit+0x20a/0x390 net/packet/af_packet.c:285
packet_snd net/packet/af_packet.c:3075 [inline]
packet_sendmsg+0x31a0/0x5150 net/packet/af_packet.c:3107
sock_sendmsg_nosec net/socket.c:724 [inline]
sock_sendmsg+0xde/0x190 net/socket.c:747
__sys_sendto+0x23a/0x340 net/socket.c:2142
__do_sys_sendto net/socket.c:2154 [inline]
__se_sys_sendto net/socket.c:2150 [inline]
__x64_sys_sendto+0xe1/0x1b0 net/socket.c:2150
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f123aaa1039
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 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 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc15d12058 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f123aaa1039
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000020000040 R09: 0000000000000014
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f123aa648c0
R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000

Fixes: 1baf5ebf

 ("erspan: auto detect truncated packets.")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230320163427.8096-1-edumazet@google.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>

There are memory leaks reported by kmemleak:

  unreferenced object 0xffff888106500800 (size 128):
    comm "modprobe", pid 1017, jiffies 4297787785 (age 67.152s)
    hex dump (first 32 bytes):
      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    backtrace:
      [<00000000970ce626>] __kmem_cache_alloc_node+0x20c/0x380
      [<00000000fb5f78d9>] kmalloc_trace+0x2f/0xb0
      [<000000000e947e2a>] idt77252_init_one+0x2847/0x3c90 [idt77252]
      [<000000006efb048e>] local_pci_probe+0xeb/0x1a0
    ...

  unreferenced object 0xffff888106500b00 (size 128):
    comm "modprobe", pid 1017, jiffies 4297787785 (age 67.152s)
    hex dump (first 32 bytes):
      00 20 3d 01 80 88 ff ff 00 20 3d 01 80 88 ff ff  . =...... =.....
      f0 23 3d 01 80 88 ff ff 00 20 3d 01 00 00 00 00  .#=...... =.....
    backtrace:
      [<00000000970ce626>] __kmem_cache_alloc_node+0x20c/0x380
      [<00000000fb5f78d9>] kmalloc_trace+0x2f/0xb0
      [<00000000f451c5be>] alloc_scq.constprop.0+0x4a/0x400 [idt77252]
      [<00000000e6313849>] idt77252_init_one+0x28cf/0x3c90 [idt77252]

The root cause is traced to the vc_maps which alloced in open_card_oam()
are not freed in close_card_oam(). The vc_maps are used to record
open connections, so when close a vc_map in close_card_oam(), the memory
should be freed. Moreover, the ubr0 is not closed when close a idt77252
device, leading to the memory leak of vc_map and scq_info.

Fix them by adding kfree in close_card_oam() and implementing new
close_card_ubr0() to close ubr0.

Fixes: 1da177e4

 ("Linux-2.6.12-rc2")
Signed-off-by: Li Zetao <lizetao1@huawei.com>
Reviewed-by: Francois Romieu <romieu@fr.zoreil.com>
Link: https://lore.kernel.org/r/20230320143318.2644630-1-lizetao1@huawei.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>

When BCM63xx internal switches are connected to switches with a 4-byte
Broadcom tag, it does not identify the packet as VLAN tagged, so it adds one
based on its PVID (which is likely 0).
Right now, the packet is received by the BCM63xx internal switch and the 6-byte
tag is properly processed. The next step would to decode the corresponding
4-byte tag. However, the internal switch adds an invalid VLAN tag after the
6-byte tag and the 4-byte tag handling fails.
In order to fix this we need to remove the invalid VLAN tag after the 6-byte
tag before passing it to the 4-byte tag decoding.

Fixes: 964dbf18

 ("net: dsa: tag_brcm: add support for legacy tags")
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20230319095540.239064-1-noltari@gmail.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Add the free_percpu for the allocated "vf->hw.lmt_info" in order to avoid
memory leak, same as the "pf->hw.lmt_info" in
`drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c`.

Fixes: 5c051207

 ("octeontx2-pf: cn10k: Use runtime allocated LMTLINE region")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Acked-by: Geethasowjanya Akula <gakula@marvell.com>
Link: https://lore.kernel.org/r/20230317064337.18198-1-jiasheng@iscas.ac.cn


Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Geoff Levand says:

====================
net/ps3_gelic_net: DMA related fixes

v9: Make rx_skb_size local to gelic_descr_prepare_rx.
v8: Add more cpu_to_be32 calls.
v7: Remove all cleanups, sync to spider net.
v6: Reworked and cleaned up patches.
v5: Some additional patch cleanups.
v4: More patch cleanups.
v3: Cleaned up patches as requested.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

The current Gelic Etherenet driver was checking the return value of its
dma_map_single call, and not using the dma_mapping_error() routine.

Fixes runtime problems like these:

  DMA-API: ps3_gelic_driver sb_05: device driver failed to check map error
  WARNING: CPU: 0 PID: 0 at kernel/dma/debug.c:1027 .check_unmap+0x888/0x8dc

Fixes: 02c18891

 ("ps3: gigabit ethernet driver for PS3, take3")
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

The Gelic Ethernet device needs to have the RX sk_buffs aligned to
GELIC_NET_RXBUF_ALIGN, and also the length of the RX sk_buffs must
be a multiple of GELIC_NET_RXBUF_ALIGN.

The current Gelic Ethernet driver was not allocating sk_buffs large
enough to allow for this alignment.

Also, correct the maximum and minimum MTU sizes, and add a new
preprocessor macro for the maximum frame size, GELIC_NET_MAX_FRAME.

Fixes various randomly occurring runtime network errors.

Fixes: 02c18891

 ("ps3: gigabit ethernet driver for PS3, take3")
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

clang with W=1 reports
drivers/net/usb/plusb.c:65:1: error:
  unused function 'pl_clear_QuickLink_features' [-Werror,-Wunused-function]
pl_clear_QuickLink_features(struct usbnet *dev, int val)
^
This static function is not used, so remove it.

Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Packet length retrieved from descriptor may be larger than
the actual socket buffer length. In such case the cloned
skb passed up the network stack will leak kernel memory contents.

Additionally prevent integer underflow when size is less than
ETH_FCS_LEN.

Fixes: 55d7de9d

 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver")
Signed-off-by: Szymon Heidrich <szymon.heidrich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

In emac_probe, &adpt->work_thread is bound with
emac_work_thread. Then it will be started by timeout
handler emac_tx_timeout or a IRQ handler emac_isr.

If we remove the driver which will call emac_remove
  to make cleanup, there may be a unfinished work.

The possible sequence is as follows:

Fix it by finishing the work before cleanup in the emac_remove
and disable timeout response.

CPU0                  CPU1

                    |emac_work_thread
emac_remove         |
free_netdev         |
kfree(netdev);      |
                    |emac_reinit_locked
                    |emac_mac_down
                    |//use netdev
Fixes: b9b17deb

 ("net: emac: emac gigabit ethernet controller driver")
Signed-off-by: Zheng Wang <zyytlz.wz@163.com>

Signed-off-by: David S. Miller <davem@davemloft.net>

We collect the software statistics counters for RX bytes (reported to
/proc/net/dev and to ethtool -S $dev | grep 'rx_bytes: ") at a time when
skb->len has already been adjusted by the eth_type_trans() ->
skb_pull_inline(skb, ETH_HLEN) call to exclude the L2 header.

This means that when connecting 2 DSA interfaces back to back and
sending 1 packet with length 100, the sending interface will report
tx_bytes as incrementing by 100, and the receiving interface will report
rx_bytes as incrementing by 86.

Since accounting for that in scripts is quirky and is something that
would be DSA-specific behavior (requiring users to know that they are
running on a DSA interface in the first place), the proposal is that we
treat it as a bug and fix it.

This design bug has always existed in DSA, according to my analysis:
commit 91da11f8 ("net: Distributed Switch Architecture protocol
support") also updates skb->dev->stats.rx_bytes += skb->len after the
eth_type_trans() call. Technically, prior to Florian's commit
a86d8bec ("net: dsa: Factor bottom tag receive functions"), each and
every vendor-specific tagging protocol driver open-coded the same bug,
until the buggy code was consolidated into something resembling what can
be seen now. So each and every driver should have its own Fixes: tag,
because of their different histories until the convergence point.
I'm not going to do that, for the sake of simplicity, but just blame the
oldest appearance of buggy code.

There are 2 ways to fix the problem. One is the obvious way, and the
other is how I ended up doing it. Obvious would have been to move
dev_sw_netstats_rx_add() one line above eth_type_trans(), and below
skb_push(skb, ETH_HLEN). But DSA processing is not as simple as that.
We count the bytes after removing everything DSA-related from the
packet, to emulate what the packet's length was, on the wire, when the
user port received it.

When eth_type_trans() executes, dsa_untag_bridge_pvid() has not run yet,
so in case the switch driver requests this behavior - commit
412a1526 ("net: dsa: untag the bridge pvid from rx skbs") has the
details - the obvious variant of the fix wouldn't have worked, because
the positioning there would have also counted the not-yet-stripped VLAN
header length, something which is absent from the packet as seen on the
wire (there it may be untagged, whereas software will see it as
PVID-tagged).

Fixes: f613ed66

 ("net: dsa: Add support for 64-bit statistics")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

The cooling levels array is supposed to prevent the system fans from
being configured below a 20% duty cycle as otherwise some of them get
stuck at 0 RPM.

Due to an off-by-one error, the last element in the array was not
initialized, causing it to be set to zero, which in turn lead to fans
being configured with a 0% duty cycle in maximum cooling state.

Since commit 332fdf95 ("mlxsw: thermal: Fix out-of-bounds memory
accesses") the contents of the array are static. Therefore, instead of
fixing the initialization of the array, simply remove it and adjust
thermal_cooling_device_ops::set_cur_state() so that the configured duty
cycle is never set below 20%.

Before:

 # cat /sys/class/thermal/thermal_zone0/cdev0/type
 mlxsw_fan
 # echo 10 > /sys/class/thermal/thermal_zone0/cdev0/cur_state
 # cat /sys/class/hwmon/hwmon0/name
 mlxsw
 # cat /sys/class/hwmon/hwmon0/pwm1
 0

After:

 # cat /sys/class/thermal/thermal_zone0/cdev0/type
 mlxsw_fan
 # echo 10 > /sys/class/thermal/thermal_zone0/cdev0/cur_state
 # cat /sys/class/hwmon/hwmon0/name
 mlxsw
 # cat /sys/class/hwmon/hwmon0/pwm1
 255

This bug was uncovered when the thermal subsystem repeatedly tried to
configure the cooling devices to their maximum state due to another
issue [1]. This resulted in the fans being stuck at 0 RPM, which
eventually lead to the system undergoing thermal shutdown.

[1] https://lore.kernel.org/netdev/ZA3CFNhU4AbtsP4G@shredder/

Fixes: a421ce08

 ("mlxsw: core: Extend cooling device with cooling levels")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Vadim Pasternak <vadimp@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Andrew reports that the SFF modules on one of the ZII platforms do not
indicate link up due to the SFP code believing that LOS indicating that
there is no signal being received from the remote end, but in fact the
LOS signal is showing that there is signal.

What makes SFF modules different from SFPs is they typically have an
inverted LOS, which uncovered this issue. When we read the hardware
state, we mask it with state_hw_mask so we ignore anything we're not
interested in. However, we don't re-read when state_hw_mask changes,
leading to sfp->state being stale.

Arrange for a software poll of the module state after we have parsed
the EEPROM in sfp_sm_mod_probe() and updated state_*_mask. This will
generate any necessary events for signal changes for the state
machine as well as updating sfp->state.

Reported-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Fixes: 8475c4b7

 ("net: sfp: re-implement soft state polling setup")
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

Currently DMA address width is either read from a RO device register
or force set from the platform data. This breaks DMA when the host DMA
address width is <=32it but the device is >32bit.

Right now the driver may decide to use a 2nd DMA descriptor for
another buffer (happens in case of TSO xmit) assuming that 32bit
addressing is used due to platform configuration but the device will
still use both descriptor addresses as one address.

This can be observed with the Intel EHL platform driver that sets
32bit for addr64 but the MAC reports 40bit. The TX queue gets stuck in
case of TCP with iptables NAT configuration on TSO packets.

The logic should be like this: Whatever we do on the host side (memory
allocation GFP flags) should happen with the host DMA width, whenever
we decide how to set addresses on the device registers we must use the
device DMA address width.

This patch renames the platform address width field from addr64 (term
used in device datasheet) to host_addr and uses this value exclusively
for host side operations while all chip operations consider the device
DMA width as read from the device register.

Fixes: 7cfc4486

 ("stmmac: intel: Configure EHL PSE0 GbE and PSE1 GbE to 32 bits DMA addressing")
Signed-off-by: Jochen Henneberg <jh@henneberg-systemdesign.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Florian Fainelli says:

====================
ACPI/DT mdiobus module owner fixes

This patch series fixes wrong mdiobus module ownership for MDIO buses
registered from DT or ACPI.

Thanks Maxime for providing the first patch and making me see that ACPI
also had the same issue.

Changes in v2:

- fixed missing kdoc in the first patch
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

Bus ownership is wrong when using acpi_mdiobus_register() to register an
mdio bus. That function is not inline, so when it calls
mdiobus_register() the wrong THIS_MODULE value is captured.

CC: Maxime Bizon <mbizon@freebox.fr>
Fixes: 803ca24d

 ("net: mdio: Add ACPI support code for mdio")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Bus ownership is wrong when using of_mdiobus_register() to register an mdio
bus. That function is not inline, so when it calls mdiobus_register() the wrong
THIS_MODULE value is captured.

Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Fixes: 90eff909

 ("net: phy: Allow splitting MDIO bus/device support from PHYs")
[florian: fix kdoc, added Fixes tag]
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

In the phy_disconnect() -> phy_stop() path, we will be forcibly setting
the PHY state machine to PHY_HALTED. This invalidates the old_state !=
phydev->state condition in phy_state_machine() such that we will neither
display the state change for debugging, nor will we invoke the
link_change_notify() callback.

Factor the code by introducing phy_process_state_change(), and ensure
that we process the state change from phy_stop() as well.

Fixes: 5c5f626b

 ("net: phy: improve handling link_change_notify callback")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2023-03-16 (igb, igbvf, igc)

This series contains updates to igb, igbvf, and igc drivers.

Lin Ma removes rtnl_lock() when disabling SRIOV on remove which was
causing deadlock on igb.

Akihiko Odaki delays enabling of SRIOV on igb to prevent early messages
that could get ignored and clears MAC address when PF returns nack on
reset; indicating no MAC address was assigned for igbvf.

Gaosheng Cui frees IRQs in error path for igbvf.

Akashi Takahiro fixes logic on checking TAPRIO gate support for igc.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

In xirc2ps_probe, the local->tx_timeout_task was bounded
with xirc2ps_tx_timeout_task. When timeout occurs,
it will call xirc_tx_timeout->schedule_work to start the
work.

When we call xirc2ps_detach to remove the driver, there
may be a sequence as follows:

Stop responding to timeout tasks and complete scheduled
tasks before cleanup in xirc2ps_detach, which will fix
the problem.

CPU0                  CPU1

                    |xirc2ps_tx_timeout_task
xirc2ps_detach      |
  free_netdev       |
    kfree(dev);     |
                    |
                    | do_reset
                    |   //use dev

Fixes: 1da177e4

 ("Linux-2.6.12-rc2")
Signed-off-by: Zheng Wang <zyytlz.wz@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

We have to make sure that the info returned by the helper is valid
before using it.

Found by Linux Verification Center (linuxtesting.org) with the SVACE
static analysis tool.

Fixes: f990c82c ("qed*: Add support for ndo_set_vf_trust")
Fixes: 733def6a

 ("qed*: IOV link control")
Signed-off-by: Daniil Tatianin <d-tatianin@yandex-team.ru>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2023-03-16 (iavf)

This series contains updates to iavf driver only.

Alex fixes incorrect check against Rx hash feature and corrects payload
value for IPv6 UDP packet.

Ahmed removes bookkeeping of VLAN 0 filter as it always exists and can
cause a false max filter error message.

* '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
  iavf: do not track VLAN 0 filters
  iavf: fix non-tunneled IPv6 UDP packet type and hashing
  iavf: fix inverted Rx hash condition leading to disabled hash
====================

Link: https://lore.kernel.org/r/20230316155316.1554931-1-anthony.l.nguyen@intel.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>

The CPTS PPS GENf adjustment settings are invalid after it has been
disabled for a while, so reset them.

Fixes: eb9233ce

 ("net: ethernet: ti: am65-cpts: adjust pps following ptp changes")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Link: https://lore.kernel.org/r/20230316095232.2002680-1-s-vadapalli@ti.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Packet length retrieved from descriptor may be larger than
the actual socket buffer length. In such case the cloned
skb passed up the network stack will leak kernel memory contents.

Fixes: 2f7ca802

 ("net: Add SMSC LAN9500 USB2.0 10/100 ethernet adapter driver")
Signed-off-by: Szymon Heidrich <szymon.heidrich@gmail.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20230316101954.75836-1-szymon.heidrich@gmail.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>