Pull cgroup fixes from Tejun Heo:

 - In cgroup1, the `tasks` file could have duplicate pids which can
   trigger a warning in seq_file. Fix it by removing duplicate items
   after sorting

 - Comment update

* tag 'cgroup-for-6.6-rc5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: Fix incorrect css_set_rwsem reference in comment
  cgroup: Remove duplicates in cgroup v1 tasks file

Pull workqueue fixes from Tejun Heo:

 - Fix access-after-free in pwq allocation error path

 - Implicitly ordered unbound workqueues should lose the implicit
   ordering if an attribute change which isn't compatible with ordered
   operation is requested. However, attribute changes requested through
   the sysfs interface weren't doing that leaving no way to override the
   implicit ordering through the sysfs interface. Fix it.

 - Other doc and misc updates

* tag 'wq-for-6.6-rc5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: fix -Wformat-truncation in create_worker
  workqueue: Override implicit ordered attribute in workqueue_apply_unbound_cpumask()
  workqueue: Use the kmem_cache_free() instead of kfree() to release pwq
  workqueue: doc: Fix function and sysfs path errors
  workqueue: Fix UAF report by KASAN in pwq_release_workfn()

Pull networking fixes from Paolo Abeni:
 "Including fixes from CAN and BPF.

  We have a regression in TC currently under investigation, otherwise
  the things that stand off most are probably the TCP and AF_PACKET
  fixes, with both issues coming from 6.5.

  Previous releases - regressions:

   - af_packet: fix fortified memcpy() without flex array.

   - tcp: fix crashes trying to free half-baked MTU probes

   - xdp: fix zero-size allocation warning in xskq_create()

   - can: sja1000: always restart the tx queue after an overrun

   - eth: mlx5e: again mutually exclude RX-FCS and RX-port-timestamp

   - eth: nfp: avoid rmmod nfp crash issues

   - eth: octeontx2-pf: fix page pool frag allocation warning

  Previous releases - always broken:

   - mctp: perform route lookups under a RCU read-side lock

   - bpf: s390: fix clobbering the caller's backchain in the trampoline

   - phy: lynx-28g: cancel the CDR check work item on the remove path

   - dsa: qca8k: fix qca8k driver for Turris 1.x

   - eth: ravb: fix use-after-free issue in ravb_tx_timeout_work()

   - eth: ixgbe: fix crash with empty VF macvlan list"

* tag 'net-6.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (54 commits)
  rswitch: Fix imbalance phy_power_off() calling
  rswitch: Fix renesas_eth_sw_remove() implementation
  octeontx2-pf: Fix page pool frag allocation warning
  nfc: nci: assert requested protocol is valid
  af_packet: Fix fortified memcpy() without flex array.
  net: tcp: fix crashes trying to free half-baked MTU probes
  net/smc: Fix pos miscalculation in statistics
  nfp: flower: avoid rmmod nfp crash issues
  net: usb: dm9601: fix uninitialized variable use in dm9601_mdio_read
  ethtool: Fix mod state of verbose no_mask bitset
  net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn()
  mctp: perform route lookups under a RCU read-side lock
  net: skbuff: fix kernel-doc typos
  s390/bpf: Fix unwinding past the trampoline
  s390/bpf: Fix clobbering the caller's backchain in the trampoline
  net/mlx5e: Again mutually exclude RX-FCS and RX-port-timestamp
  net/smc: Fix dependency of SMC on ISM
  ixgbe: fix crash with empty VF macvlan list
  net/mlx5e: macsec: use update_pn flag instead of PN comparation
  net: phy: mscc: macsec: reject PN update requests
  ...

Compiling with W=1 emitted the following warning
(Compiler: gcc (x86-64, ver. 13.2.1, .config: result of make allyesconfig,
"Treat warnings as errors" turned off):

kernel/workqueue.c:2188:54: warning: ‘%d’ directive output may be
	truncated writing between 1 and 10 bytes into a region of size
	between 5 and 14 [-Wformat-truncation=]
kernel/workqueue.c:2188:50: note: directive argument in the range
	[0, 2147483647]
kernel/workqueue.c:2188:17: note: ‘snprintf’ output between 4 and 23 bytes
	into a destination of size 16

setting "id_buf" to size 23 will silence the warning, since GCC
determines snprintf's output to be max. 23 bytes in line 2188.

Please let me know if there are any mistakes in my patch!

Signed-off-by: Lucy Mielke <lucymielke@icloud.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

Commit 5c0338c6 ("workqueue: restore WQ_UNBOUND/max_active==1
to be ordered") enabled implicit ordered attribute to be added to
WQ_UNBOUND workqueues with max_active of 1. This prevented the changing
of attributes to these workqueues leading to fix commit 0a94efb5
("workqueue: implicit ordered attribute should be overridable").

However, workqueue_apply_unbound_cpumask() was not updated at that time.
So sysfs changes to wq_unbound_cpumask has no effect on WQ_UNBOUND
workqueues with implicit ordered attribute. Since not all WQ_UNBOUND
workqueues are visible on sysfs, we are not able to make all the
necessary cpumask changes even if we iterates all the workqueue cpumasks
in sysfs and changing them one by one.

Fix this problem by applying the corresponding change made
to apply_workqueue_attrs_locked() in the fix commit to
workqueue_apply_unbound_cpumask().

Fixes: 5c0338c6

 ("workqueue: restore WQ_UNBOUND/max_active==1 to be ordered")
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

Pull ARM SoC fixes from Arnd Bergmann:
 "AngeloGioacchino Del Regno is stepping in as co-maintainer for the
  MediaTek SoC platform and starts by sending some dts fixes for the
  mt8195 platform that had been pending for a while.

  On the ixp4xx platform, Krzysztof Halasa steps down as co-maintainer,
  reflecting that Linus Walleij has been handling this on his own for
  the past few years.

  Generic RISC-V kernels are now marked as incompatible with the RZ/Five
  platform that requires custom hacks both for managing its DMA bounce
  buffers and for addressing low virtual memory.

 Finally, there is one bugfix for the AMDTEE firmware driver to prevent
 a use-after-free bug"

* tag 'soc-fixes-6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  IXP4xx MAINTAINERS entries
  arm64: dts: mediatek: mt8195: Set DSU PMU status to fail
  arm64: dts: mediatek: fix t-phy unit name
  arm64: dts: mediatek: mt8195-demo: update and reorder reserved memory regions
  arm64: dts: mediatek: mt8195-demo: fix the memory size to 8GB
  MAINTAINERS: Add Angelo as MediaTek SoC co-maintainer
  soc: renesas: Make ARCH_R9A07G043 (riscv version) depend on NONPORTABLE
  tee: amdtee: fix use-after-free vulnerability in amdtee_close_session

Pull pmdomain fix from Ulf Hansson:

 - imx: scu-pd: Correct the DMA2 channel

* tag 'pmdomain-v6.6-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm:
  pmdomain: imx: scu-pd: correct DMA2 channel

Pull pin control fixes from Linus Walleij:
 "Some pin control fixes for v6.6 which have been stacking up in my
  tree.

  Dmitry's fix to some locking in the core is the most substantial, that
  was a really neat fix.

  The rest is the usual assorted spray of minor driver fixes.

   - Drop some minor code causing warnings in the Lantiq driver

   - Fix out of bounds write in the Nuvoton driver

   - Fix lost IRQs with CONFIG_PM in the Starfive driver

   - Fix a locking issue in find_pinctrl()

   - Revert a regressive Tegra debug patch

   - Fix the Renesas RZN1 pin muxing"

* tag 'pinctrl-v6.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: renesas: rzn1: Enable missing PINMUX
  Revert "pinctrl: tegra: Add support to display pin function"
  pinctrl: avoid unsafe code pattern in find_pinctrl()
  pinctrl: starfive: jh7110: Add system pm ops to save and restore context
  pinctrl: starfive: jh7110: Fix failure to set irq after CONFIG_PM is enabled
  pinctrl: nuvoton: wpcm450: fix out of bounds write
  pinctrl: lantiq: Remove unsued declaration ltq_pinctrl_unregister()

Currently, the kfree() be used for pwq objects allocated with
kmem_cache_alloc() in alloc_and_link_pwqs(), this isn't wrong.
but usually, use "trace_kmem_cache_alloc/trace_kmem_cache_free"
to track memory allocation and free. this commit therefore use
kmem_cache_free() instead of kfree() in alloc_and_link_pwqs()
and also consistent with release of the pwq in rcu_free_pwq().

Signed-off-by: Zqiang <qiang.zhang1211@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

alloc_ordered_queue -> alloc_ordered_workqueue
/sys/devices/virtual/WQ_NAME/
    -> /sys/devices/virtual/workqueue/WQ_NAME/

Signed-off-by: WangJinchao <wangjinchao@xfusion.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

Since commit f0d9a5f1

 ("cgroup: make css_set_rwsem a spinlock
and rename it to css_set_lock"), css_set_rwsem has been replaced by
css_set_lock. That commit, however, missed the css_set_rwsem reference
in include/linux/cgroup-defs.h. Fix that by changing it to css_set_lock
as well.

Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

Update MAINTAINERS entries for Intel IXP4xx SoCs.

Linus has been handling all IXP4xx stuff since 2019 or so.

Signed-off-by: Krzysztof Hałasa <khalasa@piap.pl>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Deepak Saxena <dsaxena@plexity.net>
Link: https://lore.kernel.org/r/m3ttqxu4ru.fsf@t19.piap.pl
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Yoshihiro Shimoda says:

====================
rswitch: Fix issues on specific conditions

This patch series fix some issues of rswitch driver on specific
condtions.
====================

Link: https://lore.kernel.org/r/20231010124858.183891-1-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

The phy_power_off() should not be called if phy_power_on() failed.
So, add a condition .power_count before calls phy_power_off().

Fixes: 5cb63092

 ("net: renesas: rswitch: Add phy_power_{on,off}() calling")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Fix functions calling order and a condition in renesas_eth_sw_remove().
Otherwise, kernel NULL pointer dereference happens from phy_stop() if
a net device opens.

Fixes: 3590918b

 ("net: ethernet: renesas: Add support for "Ethernet Switch"")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Since page pool param's "order" is set to 0, will result
in below warn message if interface is configured with higher
rx buffer size.

Steps to reproduce the issue.
1. devlink dev param set pci/0002:04:00.0 name receive_buffer_size \
   value 8196 cmode runtime
2. ifconfig eth0 up

[   19.901356] ------------[ cut here ]------------
[   19.901361] WARNING: CPU: 11 PID: 12331 at net/core/page_pool.c:567 page_pool_alloc_frag+0x3c/0x230
[   19.901449] pstate: 82401009 (Nzcv daif +PAN -UAO +TCO -DIT +SSBS BTYPE=--)
[   19.901451] pc : page_pool_alloc_frag+0x3c/0x230
[   19.901453] lr : __otx2_alloc_rbuf+0x60/0xbc [rvu_nicpf]
[   19.901460] sp : ffff80000f66b970
[   19.901461] x29: ffff80000f66b970 x28: 0000000000000000 x27: 0000000000000000
[   19.901464] x26: ffff800000d15b68 x25: ffff000195b5c080 x24: ffff0002a5a32dc0
[   19.901467] x23: ffff0001063c0878 x22: 0000000000000100 x21: 0000000000000000
[   19.901469] x20: 0000000000000000 x19: ffff00016f781000 x18: 0000000000000000
[   19.901472] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
[   19.901474] x14: 0000000000000000 x13: ffff0005ffdc9c80 x12: 0000000000000000
[   19.901477] x11: ffff800009119a38 x10: 4c6ef2e3ba300519 x9 : ffff800000d13844
[   19.901479] x8 : ffff0002a5a33cc8 x7 : 0000000000000030 x6 : 0000000000000030
[   19.901482] x5 : 0000000000000005 x4 : 0000000000000000 x3 : 0000000000000a20
[   19.901484] x2 : 0000000000001080 x1 : ffff80000f66b9d4 x0 : 0000000000001000
[   19.901487] Call trace:
[   19.901488]  page_pool_alloc_frag+0x3c/0x230
[   19.901490]  __otx2_alloc_rbuf+0x60/0xbc [rvu_nicpf]
[   19.901494]  otx2_rq_aura_pool_init+0x1c4/0x240 [rvu_nicpf]
[   19.901498]  otx2_open+0x228/0xa70 [rvu_nicpf]
[   19.901501]  otx2vf_open+0x20/0xd0 [rvu_nicvf]
[   19.901504]  __dev_open+0x114/0x1d0
[   19.901507]  __dev_change_flags+0x194/0x210
[   19.901510]  dev_change_flags+0x2c/0x70
[   19.901512]  devinet_ioctl+0x3a4/0x6c4
[   19.901515]  inet_ioctl+0x228/0x240
[   19.901518]  sock_ioctl+0x2ac/0x480
[   19.901522]  __arm64_sys_ioctl+0x564/0xe50
[   19.901525]  invoke_syscall.constprop.0+0x58/0xf0
[   19.901529]  do_el0_svc+0x58/0x150
[   19.901531]  el0_svc+0x30/0x140
[   19.901533]  el0t_64_sync_handler+0xe8/0x114
[   19.901535]  el0t_64_sync+0x1a0/0x1a4
[   19.901537] ---[ end trace 678c0bf660ad8116 ]---

Fixes: b2e3406a

 ("octeontx2-pf: Add support for page pool")
Signed-off-by: Ratheesh Kannoth <rkannoth@marvell.com>
Reviewed-by: Yunsheng Lin <linyunsheng@huawei.com>
Link: https://lore.kernel.org/r/20231010034842.3807816-1-rkannoth@marvell.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

The protocol is used in a bit mask to determine if the protocol is
supported. Assert the provided protocol is less than the maximum
defined so it doesn't potentially perform a shift-out-of-bounds and
provide a clearer error for undefined protocols vs unsupported ones.

Fixes: 6a2968aa

 ("NFC: basic NCI protocol implementation")
Reported-and-tested-by:  <syzbot+0839b78e119aae1fec78@syzkaller.appspotmail.com>
Closes: https://syzkaller.appspot.com/bug?extid=0839b78e119aae1fec78
Signed-off-by: Jeremy Cline <jeremy@jcline.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20231009200054.82557-1-jeremy@jcline.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Sergei Trofimovich reported a regression [0] caused by commit a0ade840


("af_packet: Fix warning of fortified memcpy() in packet_getname().").

It introduced a flex array sll_addr_flex in struct sockaddr_ll as a
union-ed member with sll_addr to work around the fortified memcpy() check.

However, a userspace program uses a struct that has struct sockaddr_ll in
the middle, where a flex array is illegal to exist.

  include/linux/if_packet.h:24:17: error: flexible array member 'sockaddr_ll::<unnamed union>::<unnamed struct>::sll_addr_flex' not at end of 'struct packet_info_t'
     24 |                 __DECLARE_FLEX_ARRAY(unsigned char, sll_addr_flex);
        |                 ^~~~~~~~~~~~~~~~~~~~

To fix the regression, let's go back to the first attempt [1] telling
memcpy() the actual size of the array.

Reported-by: Sergei Trofimovich <slyich@gmail.com>
Closes: https://github.com/NixOS/nixpkgs/pull/252587#issuecomment-1741733002 [0]
Link: https://lore.kernel.org/netdev/20230720004410.87588-3-kuniyu@amazon.com/ [1]
Fixes: a0ade840

 ("af_packet: Fix warning of fortified memcpy() in packet_getname().")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20231009153151.75688-1-kuniyu@amazon.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

Enable pin muxing (eg. programmable function), so that the RZ/N1 GPIO
pins will be configured as specified by the pinmux in the DTS.

This used to be enabled implicitly via CONFIG_GENERIC_PINMUX_FUNCTIONS,
however that was removed, since the RZ/N1 driver does not call any of
the generic pinmux functions.

Fixes: 1308fb4e

 ("pinctrl: rzn1: Do not select GENERIC_PIN{CTRL_GROUPS,MUX_FUNCTIONS}")
Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20231004200008.1306798-1-ralph.siemsen@linaro.org
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

tcp_stream_alloc_skb() initializes the skb to use tcp_tsorted_anchor
which is a union with the destructor. We need to clean that
TCP-iness up before freeing.

Fixes: 73601329

 ("tcp: let tcp_mtu_probe() build headless packets")
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20231010173651.3990234-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Merge tag 'ieee802154-for-net-2023-10-10' of git://git.kernel.org/pub/scm/linux/kernel/git/wpan/wpan

Stefan Schmidt says:

====================
pull-request: ieee802154 for net 2023-10-10

Just one small fix this time around.

Dinghao Liu fixed a potential use-after-free in the ca8210 driver probe
function.

* tag 'ieee802154-for-net-2023-10-10' of git://git.kernel.org/pub/scm/linux/kernel/git/wpan/wpan:
  ieee802154: ca8210: Fix a potential UAF in ca8210_probe
====================

Link: https://lore.kernel.org/r/20231010200943.82225-1-stefan@datenfreihafen.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Pull quota regression fix from Jan Kara.

* tag 'fs_for_v6.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  quota: Fix slow quotaoff

Pull btrfs fixes from David Sterba:
 "A revert of recent mount option parsing fix, this breaks mounts with
  security options.

  The second patch is a flexible array annotation"

* tag 'for-6.6-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: add __counted_by for struct btrfs_delayed_item and use struct_size()
  Revert "btrfs: reject unknown mount options early"

Pull ata fixes from Damien Le Moal:

 - Three fixes for the pata_parport driver to address a typo in the
   code, a missing operation implementation and port reset handling in
   the presence of slave devices (Ondrej)

 - Fix handling of ATAPI devices reset with the fit3 protocol driver of
   the pata_parport driver (Ondrej)

 - A follow up fix for the recent suspend/resume corrections to avoid
   attempting rescanning on resume the scsi device associated with an
   ata disk when the request queue of the scsi device is still suspended
   (in addition to not doing the rescan if the scsi device itself is
   still suspended) (me)

* tag 'ata-6.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
  scsi: Do not rescan devices with a suspended queue
  ata: pata_parport: fit3: implement IDE command set registers
  ata: pata_parport: add custom version of wait_after_reset
  ata: pata_parport: implement set_devctl
  ata: pata_parport: fix pata_parport_devchk

Pull HID fixes from Benjamin Tissoires:

 - regression fix for i2c-hid when used on DT platforms (Johan Hovold)

 - kernel crash fix on removal of the Logitech USB receiver (Hans de
   Goede)

* tag 'for-linus-2023101101' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
  HID: logitech-hidpp: Fix kernel crash on receiver USB disconnect
  HID: i2c-hid: fix handling of unpopulated devices

Pull printk regression fix from Petr Mladek:

 - Avoid unnecessary wait and try to flush messages before checking
   pending ones

* tag 'printk-for-6.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
  printk: flush consoles before checking progress

Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time via CONFIG_UBSAN_BOUNDS (for
array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).

While there, use struct_size() helper, instead of the open-coded
version, to calculate the size for the allocation of the whole
flexible structure, including of course, the flexible-array member.

This code was found with the help of Coccinelle, and audited and
fixed manually.

Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

SMC_STAT_PAYLOAD_SUB(_smc_stats, _tech, key, _len, _rc) will calculate
wrong bucket positions for payloads of exactly 4096 bytes and
(1 << (m + 12)) bytes, with m == SMC_BUF_MAX - 1.

Intended bucket distribution:
Assume l == size of payload, m == SMC_BUF_MAX - 1.

Bucket 0                : 0 < l <= 2^13
Bucket n, 1 <= n <= m-1 : 2^(n+12) < l <= 2^(n+13)
Bucket m                : l > 2^(m+12)

Current solution:
_pos = fls64((l) >> 13)
[...]
_pos = (_pos < m) ? ((l == 1 << (_pos + 12)) ? _pos - 1 : _pos) : m

For l == 4096, _pos == -1, but should be _pos == 0.
For l == (1 << (m + 12)), _pos == m, but should be _pos == m - 1.

In order to avoid special treatment of these corner cases, the
calculation is adjusted. The new solution first subtracts the length by
one, and then calculates the correct bucket by shifting accordingly,
i.e. _pos = fls64((l - 1) >> 13), l > 0.
This not only fixes the issues named above, but also makes the whole
bucket assignment easier to follow.

Same is done for SMC_STAT_RMB_SIZE_SUB(_smc_stats, _tech, k, _len),
where the calculation of the bucket position is similar to the one
named above.

Fixes: e0e4b8fa

 ("net/smc: Add SMC statistics support")
Suggested-by: Halil Pasic <pasic@linux.ibm.com>
Signed-off-by: Nils Hoppmann <niho@linux.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com>
Reviewed-by: Dust Li <dust.li@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

When there are CT table entries, and you rmmod nfp, the following
events can happen:

task1：
    nfp_net_pci_remove
          ↓
    nfp_flower_stop->(asynchronous)tcf_ct_flow_table_cleanup_work(3)
          ↓
    nfp_zone_table_entry_destroy(1)

task2：
    nfp_fl_ct_handle_nft_flow(2)

When the execution order is (1)->(2)->(3), it will crash. Therefore, in
the function nfp_fl_ct_del_flow, nf_flow_table_offload_del_cb needs to
be executed synchronously.

At the same time, in order to solve the deadlock problem and the problem
of rtnl_lock sometimes failing, replace rtnl_lock with the private
nfp_fl_lock.

Fixes: 7cc93d88

 ("nfp: flower-ct: remove callback delete deadlock")
Cc: stable@vger.kernel.org
Signed-off-by: Yanguo Li <yanguo.li@corigine.com>
Signed-off-by: Louis Peens <louis.peens@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

syzbot has found an uninit-value bug triggered by the dm9601 driver [1].

This error happens because the variable res is not updated if the call
to dm_read_shared_word returns an error. In this particular case -EPROTO
was returned and res stayed uninitialized.

This can be avoided by checking the return value of dm_read_shared_word
and propagating the error if the read operation failed.

[1] https://syzkaller.appspot.com/bug?extid=1f53a30781af65d2c955

Cc: stable@vger.kernel.org
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Reported-and-tested-by:  <syzbot+1f53a30781af65d2c955@syzkaller.appspotmail.com>
Acked-by: Peter Korsgaard <peter@korsgaard.com>
Fixes: d0374f4f

 ("USB: Davicom DM9601 usbnet driver")
Link: https://lore.kernel.org/r/20231009-topic-dm9601_uninit_mdio_read-v2-1-f2fe39739b6c@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Daniel Borkmann says:

====================
pull-request: bpf 2023-10-11

We've added 14 non-merge commits during the last 5 day(s) which contain
a total of 12 files changed, 398 insertions(+), 104 deletions(-).

The main changes are:

1) Fix s390 JIT backchain issues in the trampoline code generation which
   previously clobbered the caller's backchain, from Ilya Leoshkevich.

2) Fix zero-size allocation warning in xsk sockets when the configured
   ring size was close to SIZE_MAX, from Andrew Kanner.

3) Fixes for bpf_mprog API that were found when implementing support
   in the ebpf-go library along with selftests, from Daniel Borkmann
   and Lorenz Bauer.

4) Fix riscv JIT to properly sign-extend the return register in programs.
   This fixes various test_progs selftests on riscv, from Björn Töpel.

5) Fix verifier log for async callback return values where the allowed
   range was displayed incorrectly, from David Vernet.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  s390/bpf: Fix unwinding past the trampoline
  s390/bpf: Fix clobbering the caller's backchain in the trampoline
  selftests/bpf: Add testcase for async callback return value failure
  bpf: Fix verifier log for async callback return values
  xdp: Fix zero-size allocation warning in xskq_create()
  riscv, bpf: Track both a0 (RISC-V ABI) and a5 (BPF) return values
  riscv, bpf: Sign-extend return values
  selftests/bpf: Make seen_tc* variable tests more robust
  selftests/bpf: Test query on empty mprog and pass revision into attach
  selftests/bpf: Adapt assert_mprog_count to always expect 0 count
  selftests/bpf: Test bpf_mprog query API via libbpf and raw syscall
  bpf: Refuse unused attributes in bpf_prog_{attach,detach}
  bpf: Handle bpf_mprog_query with NULL entry
  bpf: Fix BPF_PROG_QUERY last field check
====================

Link: https://lore.kernel.org/r/20231010223610.3984-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

A bitset without mask in a _SET request means we want exactly the bits in
the bitset to be set. This works correctly for compact format but when
verbose format is parsed, ethnl_update_bitset32_verbose() only sets the
bits present in the request bitset but does not clear the rest. The commit
66991703 fixes this issue by clearing the whole target bitmap before we
start iterating. The solution proposed brought an issue with the behavior
of the mod variable. As the bitset is always cleared the old val will
always differ to the new val.

Fix it by adding a new temporary variable which save the state of the old
bitmap.

Fixes: 66991703

 ("ethtool: fix application of verbose no_mask bitset")
Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20231009133645.44503-1-kory.maincent@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Merge tag 'linux-can-fixes-for-6.6-20231009' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2023-10-09

Lukas Magel's patch for the CAN ISO-TP protocol fixes the TX state
detection and wait behavior.

John Watts contributes a patch to only show the sun4i_can Kconfig
option on ARCH_SUNXI.

A patch by Miquel Raynal fixes the soft-reset workaround for Renesas
SoCs in the sja1000 driver.

Markus Schneider-Pargmann's patch for the tcan4x5x m_can glue driver
fixes the id2 register for the tcan4553.

2 patches by Haibo Chen fix the flexcan stop mode for the imx93 SoC.

* tag 'linux-can-fixes-for-6.6-20231009' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can:
  can: tcan4x5x: Fix id2_register for tcan4553
  can: flexcan: remove the auto stop mode for IMX93
  can: sja1000: Always restart the Tx queue after an overrun
  arm64: dts: imx93: add the Flex-CAN stop mode by GPR
  can: sun4i_can: Only show Kconfig if ARCH_SUNXI is set
  can: isotp: isotp_sendmsg(): fix TX state detection and wait behavior
====================

Link: https://lore.kernel.org/r/20231009085256.693378-1-mkl@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Sili Luo reported a race in nfc_llcp_sock_get(), leading to UAF.

Getting a reference on the socket found in a lookup while
holding a lock should happen before releasing the lock.

nfc_llcp_sock_get_sn() has a similar problem.

Finally nfc_llcp_recv_snl() needs to make sure the socket
found by nfc_llcp_sock_from_sn() does not disappear.

Fixes: 8f50020e

 ("NFC: LLCP late binding")
Reported-by: Sili Luo <rootlab@huawei.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willy Tarreau <w@1wt.eu>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20231009123110.3735515-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Our current route lookups (mctp_route_lookup and mctp_route_lookup_null)
traverse the net's route list without the RCU read lock held. This means
the route lookup is subject to preemption, resulting in an potential
grace period expiry, and so an eventual kfree() while we still have the
route pointer.

Add the proper read-side critical section locks around the route
lookups, preventing premption and a possible parallel kfree.

The remaining net->mctp.routes accesses are already under a
rcu_read_lock, or protected by the RTNL for updates.

Based on an analysis from Sili Luo <rootlab@huawei.com>, where
introducing a delay in the route lookup could cause a UAF on
simultaneous sendmsg() and route deletion.

Reported-by: Sili Luo <rootlab@huawei.com>
Fixes: 889b7da2

 ("mctp: Add initial routing framework")
Cc: stable@vger.kernel.org
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/29c4b0e67dc1bf3571df3982de87df90cae9b631.1696837310.git.jk@codeconstruct.com.au
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Correct punctuation and drop an extraneous word.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20231008214121.25940-1-rdunlap@infradead.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

When functions called by the trampoline panic, the backtrace that is
printed stops at the trampoline, because the trampoline does not store
its caller's frame address (backchain) on stack; it also stores the
return address at a wrong location.

Store both the same way as is already done for the regular eBPF programs.

Fixes: 528eb2cb

 ("s390/bpf: Implement arch_prepare_bpf_trampoline()")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20231010203512.385819-3-iii@linux.ibm.com

One of the first things that s390x kernel functions do is storing the
the caller's frame address (backchain) on stack. This makes unwinding
possible. The backchain is always stored at frame offset 152, which is
inside the 160-byte stack area, that the functions allocate for their
callees. The callees must preserve the backchain; the remaining 152
bytes they may use as they please.

Currently the trampoline uses all 160 bytes, clobbering the backchain.
This causes kernel panics when using __builtin_return_address() in
functions called by the trampoline.

Fix by reducing the usage of the caller-reserved stack area by 8 bytes
in the trampoline.

Fixes: 528eb2cb

 ("s390/bpf: Implement arch_prepare_bpf_trampoline()")
Reported-by: Song Liu <song@kernel.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20231010203512.385819-2-iii@linux.ibm.com

Pull xen fix from Juergen Gross:
 "A fix for the xen events driver:

  Closing of an event channel in the Linux kernel can result in a
  deadlock. This happens when the close is being performed in parallel
  to an unrelated Xen console action and the handling of a Xen console
  interrupt in an unprivileged guest.

  The closing of an event channel is e.g. triggered by removal of a
  paravirtual device on the other side. As this action will cause
  console messages to be issued on the other side quite often, the
  chance of triggering the deadlock is not negligible"

* tag 'xsa441-6.6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/events: replace evtchn_rwlock with RCU