The following kernel panic can be triggered when a task with pid=1 attaches
a prog that attempts to send killing signal to itself, also see [1] for more
details:

  Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
  CPU: 3 PID: 1 Comm: systemd Not tainted 6.1.0-09652-g59fe41b5 #148
  Call Trace:
  <TASK>
  __dump_stack lib/dump_stack.c:88 [inline]
  dump_stack_lvl+0x100/0x178 lib/dump_stack.c:106
  panic+0x2c4/0x60f kernel/panic.c:275
  do_exit.cold+0x63/0xe4 kernel/exit.c:789
  do_group_exit+0xd4/0x2a0 kernel/exit.c:950
  get_signal+0x2460/0x2600 kernel/signal.c:2858
  arch_do_signal_or_restart+0x78/0x5d0 arch/x86/kernel/signal.c:306
  exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
  exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203
  __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
  syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:296
  do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86
  entry_SYSCALL_64_after_hwframe+0x63/0xcd

So skip task with pid=1 in bpf_send_signal_common() to avoid the panic.

  [1] https://lore.kernel.org/bpf/20221222043507.33037-1-sunhao.th@gmail.comSigned-off-by: NHao Sun <sunhao.th@gmail.com>
Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
Acked-by: NStanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/bpf/20230106084838.12690-1-sunhao.th@gmail.com

The verifier skips invalid kfunc call in check_kfunc_call(), which
would be captured in fixup_kfunc_call() if such insn is not eliminated
by dead code elimination. However, this can lead to the following
warning in backtrack_insn(), also see [1]:

  ------------[ cut here ]------------
  verifier backtracking bug
  WARNING: CPU: 6 PID: 8646 at kernel/bpf/verifier.c:2756 backtrack_insn
  kernel/bpf/verifier.c:2756
	__mark_chain_precision kernel/bpf/verifier.c:3065
	mark_chain_precision kernel/bpf/verifier.c:3165
	adjust_reg_min_max_vals kernel/bpf/verifier.c:10715
	check_alu_op kernel/bpf/verifier.c:10928
	do_check kernel/bpf/verifier.c:13821 [inline]
	do_check_common kernel/bpf/verifier.c:16289
  [...]

So make backtracking conservative with this by returning ENOTSUPP.

  [1] https://lore.kernel.org/bpf/CACkBjsaXNceR8ZjkLG=dT3P=4A8SBsg0Z5h5PWLryF5=ghKq=g@mail.gmail.com/

Reported-by: syzbot+4da3ff23081bafe74fc2@syzkaller.appspotmail.com
Signed-off-by: NHao Sun <sunhao.th@gmail.com>
Signed-off-by: NDaniel Borkmann <daniel@iogearbox.net>
Acked-by: NYonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20230104014709.9375-1-sunhao.th@gmail.com

This unexpected behavior is observed:

node 1                    | node 2
------                    | ------
link is established       | link is established
reboot                    | link is reset
up                        | send discovery message
receive discovery message |
link is established       | link is established
send discovery message    |
                          | receive discovery message
                          | link is reset (unexpected)
                          | send reset message
link is reset             |

It is due to delayed re-discovery as described in function
tipc_node_check_dest(): "this link endpoint has already reset
and re-established contact with the peer, before receiving a
discovery message from that node."

However, commit 598411d7 has changed the condition for calling
tipc_node_link_down() which was the acceptance of new media address.

This commit fixes this by restoring the old and correct behavior.

Fixes: 598411d7 ("tipc: make resetting of links non-atomic")
Acked-by: NJon Maloy <jmaloy@redhat.com>
Signed-off-by: NTung Nguyen <tung.q.nguyen@dektech.com.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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: NHui Wang <hui.wang@canonical.com>
Reviewed-by: NJiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20230105034249.10433-1-hui.wang@canonical.comSigned-off-by: NJakub 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: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NBiao Huang <biao.huang@mediatek.com>
Signed-off-by: NJakub 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: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NHelge 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: NZhengchao Shao <shaozhengchao@huawei.com>
Reviewed-by: NJiri Pirko <jiri@nvidia.com>
Link: https://lore.kernel.org/r/20230104065146.1153009-1-shaozhengchao@huawei.comSigned-off-by: NPaolo 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: NEric Dumazet <edumazet@google.com>
Cc: Benjamin Coddington <bcodding@redhat.com>
Acked-by: NGuillaume Nault <gnault@redhat.com>
Link: https://lore.kernel.org/r/20230103192736.454149-1-edumazet@google.comSigned-off-by: NJakub 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: Nslipper <slipper.alive@gmail.com>
Signed-off-by: NPaolo Abeni <pabeni@redhat.com>
Link: https://lore.kernel.org/r/4b80c3d1dbe3d0ab072f80450c202d9bc88b4b03.1672740602.git.pabeni@redhat.comSigned-off-by: NJakub 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: NCaleb Sander <csander@purestorage.com>
Acked-by: NAlok Prasad <palok@marvell.com>
Link: https://lore.kernel.org/r/20230103233021.1457646-1-csander@purestorage.comSigned-off-by: NJakub 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: NJakub 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: NRodrigo Branco <bsdaemon@google.com>
Reviewed-by: NBorislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: NIngo 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: NSrivatsa S. Bhat (VMware) <srivatsa@csail.mit.edu>
Acked-by: NVivek Thampi <vivek@vivekthampi.com>
Acked-by: NDeep Shah <sdeep@vmware.com>
Acked-by: NAlexey Makhalov <amakhalov@vmware.com>
Signed-off-by: NDavid 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: NJason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: NIngo 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: NJaegeuk Kim <jaegeuk@kernel.org>

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

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

This can avoid confusing tracepoint values.
Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>

With below two cases, it will cause NULL pointer dereference when
accessing SM_I(sbi)->fcc_info in f2fs_issue_flush().

a) If kthread_run() fails in f2fs_create_flush_cmd_control(), it will
release SM_I(sbi)->fcc_info,

- mount -o noflush_merge /dev/vda /mnt/f2fs
- mount -o remount,flush_merge /dev/vda /mnt/f2fs  -- kthread_run() fails
- dd if=/dev/zero of=/mnt/f2fs/file bs=4k count=1 conv=fsync

b) we will never allocate memory for SM_I(sbi)->fcc_info w/ below
testcase,

- mount -o ro /dev/vda /mnt/f2fs
- mount -o rw,remount /dev/vda /mnt/f2fs
- dd if=/dev/zero of=/mnt/f2fs/file bs=4k count=1 conv=fsync

In order to fix this issue, let change as below:
- fix error path handling in f2fs_create_flush_cmd_control().
- allocate SM_I(sbi)->fcc_info even if readonly is on.
Signed-off-by: NChao Yu <chao@kernel.org>
Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>

Fix a warning: "found `movsd'; assuming `movsl' was meant"
Signed-off-by: NMikulas Patocka <mpatocka@redhat.com>
Signed-off-by: NIngo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org

Variables off and len typed as uint32 in rndis_query function
are controlled by incoming RNDIS response message thus their
value may be manipulated. Setting off to a unexpectetly large
value will cause the sum with len and 8 to overflow and pass
the implemented validation step. Consequently the response
pointer will be referring to a location past the expected
buffer boundaries allowing information leakage e.g. via
RNDIS_OID_802_3_PERMANENT_ADDRESS OID.

Fixes: ddda0862 ("USB: rndis_host, various cleanups")
Signed-off-by: NSzymon Heidrich <szymon.heidrich@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We want to fail if the PCS is not available, not if it is available. Fix
this condition.

Fixes: 5d93cfcf ("net: dpaa: Convert to phylink")
Reported-by: NChristian Zigotzky <info@xenosoft.de>
Signed-off-by: NSean Anderson <seanga2@gmail.com>
Reviewed-by: NJiri Pirko <jiri@nvidia.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Current code uses per_cpu pointer to get the lmtst_id mapped to
the core on which aura_free() is executed. Using per_cpu pointer
without preemption disable causing mismatch between lmtst_id and
core on which pointer gets freed. This patch fixes the issue by
disabling preemption around aura_free.

Fixes: ef6c8da7 ("octeontx2-pf: cn10K: Reserve LMTST lines per core")
Signed-off-by: NSunil Goutham <sgoutham@marvell.com>
Signed-off-by: NGeetha sowjanya <gakula@marvell.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Otherwise we would dereference a NULL aggregator pointer when calling
__set_agg_ports_ready on the line below.

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

Fixes: 1da177e4 ("Linux-2.6.12-rc2")
Signed-off-by: NDaniil Tatianin <d-tatianin@yandex-team.ru>
Reviewed-by: NJiri Pirko <jiri@nvidia.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains Netfilter fixes for net:

1) Use signed integer in ipv6_skip_exthdr() called from nf_confirm().
   Reported by static analysis tooling, patch from Florian Westphal.

2) Missing set type checks in nf_tables: Validate that set declaration
   matches the an existing set type, otherwise bail out with EEXIST.
   Currently, nf_tables silently accepts the re-declaration with a
   different type but it bails out later with EINVAL when the user adds
   entries to the set. This fix is relatively large because it requires
   two preparation patches that are included in this batch.

3) Do not ignore updates of timeout and gc_interval parameters in
   existing sets.

4) Fix a hang when 0/0 subnets is added to a hash:net,port,net type of
   ipset. Except hash:net,port,net and hash:net,iface, the set types don't
   support 0/0 and the auxiliary functions rely on this fact. So 0/0 needs
   a special handling in hash:net,port,net which was missing (hash:net,iface
   was not affected by this bug), from Jozsef Kadlecsik.

5) When adding/deleting large number of elements in one step in ipset,
   it can take a reasonable amount of time and can result in soft lockup
   errors. This patch is a complete rework of the previous version in order
   to use a smaller internal batch limit and at the same time removing
   the external hard limit to add arbitrary number of elements in one step.
   Also from Jozsef Kadlecsik.

Except for patch #1, which fixes a bug introduced in the previous net-next
development cycle, anything else has been broken for several releases.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Pull btrfs fixes from David Sterba:
 "First batch of regression and regular fixes:

   - regressions:
       - fix error handling after conversion to qstr for paths
       - fix raid56/scrub recovery caused by uninitialized variable
         after conversion to error bitmaps
       - restore qgroup backref lookup behaviour after recent
         refactoring
       - fix leak of device lists at module exit time

   - fix resolving backrefs for inline extent followed by prealloc

   - reset defrag ioctl buffer on memory allocation error"

* tag 'for-6.2-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: fix fscrypt name leak after failure to join log transaction
  btrfs: scrub: fix uninitialized return value in recover_scrub_rbio
  btrfs: fix resolving backrefs for inline extent followed by prealloc
  btrfs: fix trace event name typo for FLUSH_DELAYED_REFS
  btrfs: restore BTRFS_SEQ_LAST when looking up qgroup backref lookup
  btrfs: fix leak of fs devices after removing btrfs module
  btrfs: fix an error handling path in btrfs_defrag_leaves()
  btrfs: fix an error handling path in btrfs_rename()

syzbot is reporting hung task at do_user_addr_fault() [1], for there is
a silent deadlock between PG_locked bit and ni_lock lock.

Since filemap_update_page() calls filemap_read_folio() after calling
folio_trylock() which will set PG_locked bit, ntfs_truncate() must not
call truncate_setsize() which will wait for PG_locked bit to be cleared
when holding ni_lock lock.

Link: https://lore.kernel.org/all/00000000000060d41f05f139aa44@google.com/
Link: https://syzkaller.appspot.com/bug?extid=bed15dbf10294aa4f2ae [1]
Reported-by: Nsyzbot <syzbot+bed15dbf10294aa4f2ae@syzkaller.appspotmail.com>
Debugged-by: NLinus Torvalds <torvalds@linux-foundation.org>
Co-developed-by: NHillf Danton <hdanton@sina.com>
Signed-off-by: NHillf Danton <hdanton@sina.com>
Signed-off-by: NTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Fixes: 4342306f ("fs/ntfs3: Add file operations and implementation")
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

After

  b3e34a47 ("x86/kexec: fix memory leak of elf header buffer"),

freeing image->elf_headers in the error path of crash_load_segments()
is not needed because kimage_file_post_load_cleanup() will take
care of that later. And not clearing it could result in a double-free.

Drop the superfluous vfree() call at the error path of
crash_load_segments().

Fixes: b3e34a47 ("x86/kexec: fix memory leak of elf header buffer")
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NBorislav Petkov (AMD) <bp@alien8.de>
Acked-by: NBaoquan He <bhe@redhat.com>
Acked-by: NVlastimil Babka <vbabka@suse.cz>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/r/20221122115122.13937-1-tiwai@suse.de

If v4 READDIR operation hits a mountpoint and gets back an error,
then it will include that entry in the reply and set RDATTR_ERROR for it
to the error.

That's fine for "normal" exported filesystems, but on the v4root, we
need to be more careful to only expose the existence of dentries that
lead to exports.

If the mountd upcall times out while checking to see whether a
mountpoint on the v4root is exported, then we have no recourse other
than to fail the whole operation.

Cc: Steve Dickson <steved@redhat.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216777Reported-by: NJianHong Yin <yin-jianhong@163.com>
Signed-off-by: NJeff Layton <jlayton@kernel.org>
Signed-off-by: NChuck Lever <chuck.lever@oracle.com>
Cc: <stable@vger.kernel.org>

Commit 62d89a7d ("video: fbdev: matroxfb: set maxvram of vbG200eW to
the same as vbG200 to avoid black screen") accidently decreases the
maximum memory size for the Matrox G200eW (102b:0532) from 8 MB to 1 MB
by missing one zero. This caused the driver initialization to fail with
the messages below, as the minimum required VRAM size is 2 MB:

     [    9.436420] matroxfb: Matrox MGA-G200eW (PCI) detected
     [    9.444502] matroxfb: cannot determine memory size
     [    9.449316] matroxfb: probe of 0000:0a:03.0 failed with error -1

So, add the missing 0 to make it the intended 16 MB. Successfully tested on
the Dell PowerEdge R910/0KYD3D, BIOS 2.10.0 08/29/2013, that the warning is
gone.

While at it, add a leading 0 to the maxdisplayable entry, so it’s aligned
properly. The value could probably also be increased from 8 MB to 16 MB, as
the G200 uses the same values, but I have not checked any datasheet.

Note, matroxfb is obsolete and superseded by the maintained DRM driver
mga200, which is used by default on most systems where both drivers are
available. Therefore, on most systems it was only a cosmetic issue.

Fixes: 62d89a7d ("video: fbdev: matroxfb: set maxvram of vbG200eW to the same as vbG200 to avoid black screen")
Link: https://lore.kernel.org/linux-fbdev/972999d3-b75d-5680-fcef-6e6905c52ac5@suse.de/T/#mb6953a9995ebd18acc8552f99d6db39787aec775
Cc: it+linux-fbdev@molgen.mpg.de
Cc: Z. Liu <liuzx@knownsec.com>
Cc: Rich Felker <dalias@libc.org>
Cc: stable@vger.kernel.org
Signed-off-by: NPaul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: NHelge Deller <deller@gmx.de>

When adding/deleting large number of elements in one step in ipset, it can
take a reasonable amount of time and can result in soft lockup errors. The
patch 5f7b51bf ("netfilter: ipset: Limit the maximal range of
consecutive elements to add/delete") tried to fix it by limiting the max
elements to process at all. However it was not enough, it is still possible
that we get hung tasks. Lowering the limit is not reasonable, so the
approach in this patch is as follows: rely on the method used at resizing
sets and save the state when we reach a smaller internal batch limit,
unlock/lock and proceed from the saved state. Thus we can avoid long
continuous tasks and at the same time removed the limit to add/delete large
number of elements in one step.

The nfnl mutex is held during the whole operation which prevents one to
issue other ipset commands in parallel.

Fixes: 5f7b51bf ("netfilter: ipset: Limit the maximal range of consecutive elements to add/delete")
Reported-by: syzbot+9204e7399656300bf271@syzkaller.appspotmail.com
Signed-off-by: NJozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>

The hash:net,port,net set type supports /0 subnets. However, the patch
commit 5f7b51bf titled "netfilter: ipset: Limit the maximal range
of consecutive elements to add/delete" did not take into account it and
resulted in an endless loop. The bug is actually older but the patch
5f7b51bf brings it out earlier.

Handle /0 subnets properly in hash:net,port,net set types.

Fixes: 5f7b51bf ("netfilter: ipset: Limit the maximal range of consecutive elements to add/delete")
Reported-by: NМарк Коренберг <socketpair@gmail.com>
Signed-off-by: NJozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>

There is an issue with the checking of the return value of
'of_get_mac_address', which returns 0 on success and negative value on
failure. The driver interpretated the result the opposite way. Therefore
if there was a MAC address defined in the DT, then the driver was
generating a random MAC address otherwise it would use address 0.
Fix this by checking correctly the return value of 'of_get_mac_address'

Fixes: b74ef9f9 ("net: sparx5: Do not use mac_addr uninitialized in mchp_sparx5_probe()")
Signed-off-by: NHoratiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>