Current release - regressions:
- fix feature enforcement to allow NETIF_F_HW_TLS_TX
if IP_CSUM && IPV6_CSUM
- dcb: accept RTM_GETDCB messages carrying set-like DCB commands
if user is admin for backward-compatibility
- selftests/tls: fix selftests build after adding ChaCha20-Poly1305
Current release - always broken:
- ppp: fix refcount underflow on channel unbridge
- bnxt_en: clear DEFRAG flag in firmware message when retry flashing
- smc: fix out of bound access in the new netlink interface
Previous releases - regressions:
- fix use-after-free with UDP GRO by frags
- mptcp: better msk-level shutdown
- rndis_host: set proper input size for OID_GEN_PHYSICAL_MEDIUM request
- i40e: xsk: fix potential NULL pointer dereferencing
Previous releases - always broken:
- skb frag: kmap_atomic fixes
- avoid 32 x truesize under-estimation for tiny skbs
- fix issues around register_netdevice() failures
- udp: prevent reuseport_select_sock from reading uninitialized socks
- dsa: unbind all switches from tree when DSA master unbinds
- dsa: clear devlink port type before unregistering slave netdevs
- can: isotp: isotp_getname(): fix kernel information leak
- mlxsw: core: Thermal control fixes
- ipv6: validate GSO SKB against MTU before finish IPv6 processing
- stmmac: use __napi_schedule() for PREEMPT_RT
- net: mvpp2: remove Pause and Asym_Pause support
Misc:
- remove from MAINTAINERS folks who had been inactive for >5yrs
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"We have a few fixes for long standing issues, in particular Eric's fix
to not underestimate the skb sizes, and my fix for brokenness of
register_netdevice() error path. They may uncover other bugs so we
will keep an eye on them. Also included are Willem's fixes for
kmap(_atomic).
Looking at the "current release" fixes, it seems we are about one rc
behind a normal cycle. We've previously seen an uptick of "people had
run their test suites" / "humans actually tried to use new features"
fixes between rc2 and rc3.
Summary:
Current release - regressions:
- fix feature enforcement to allow NETIF_F_HW_TLS_TX if IP_CSUM &&
IPV6_CSUM
- dcb: accept RTM_GETDCB messages carrying set-like DCB commands if
user is admin for backward-compatibility
- selftests/tls: fix selftests build after adding ChaCha20-Poly1305
Current release - always broken:
- ppp: fix refcount underflow on channel unbridge
- bnxt_en: clear DEFRAG flag in firmware message when retry flashing
- smc: fix out of bound access in the new netlink interface
Previous releases - regressions:
- fix use-after-free with UDP GRO by frags
- mptcp: better msk-level shutdown
- rndis_host: set proper input size for OID_GEN_PHYSICAL_MEDIUM
request
- i40e: xsk: fix potential NULL pointer dereferencing
Previous releases - always broken:
- skb frag: kmap_atomic fixes
- avoid 32 x truesize under-estimation for tiny skbs
- fix issues around register_netdevice() failures
- udp: prevent reuseport_select_sock from reading uninitialized socks
- dsa: unbind all switches from tree when DSA master unbinds
- dsa: clear devlink port type before unregistering slave netdevs
- can: isotp: isotp_getname(): fix kernel information leak
- mlxsw: core: Thermal control fixes
- ipv6: validate GSO SKB against MTU before finish IPv6 processing
- stmmac: use __napi_schedule() for PREEMPT_RT
- net: mvpp2: remove Pause and Asym_Pause support
Misc:
- remove from MAINTAINERS folks who had been inactive for >5yrs"
* tag 'net-5.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (58 commits)
mptcp: fix locking in mptcp_disconnect()
net: Allow NETIF_F_HW_TLS_TX if IP_CSUM && IPV6_CSUM
MAINTAINERS: dccp: move Gerrit Renker to CREDITS
MAINTAINERS: ipvs: move Wensong Zhang to CREDITS
MAINTAINERS: tls: move Aviad to CREDITS
MAINTAINERS: ena: remove Zorik Machulsky from reviewers
MAINTAINERS: vrf: move Shrijeet to CREDITS
MAINTAINERS: net: move Alexey Kuznetsov to CREDITS
MAINTAINERS: altx: move Jay Cliburn to CREDITS
net: avoid 32 x truesize under-estimation for tiny skbs
nt: usb: USB_RTL8153_ECM should not default to y
net: stmmac: fix taprio configuration when base_time is in the past
net: stmmac: fix taprio schedule configuration
net: tip: fix a couple kernel-doc markups
net: sit: unregister_netdevice on newlink's error path
net: stmmac: Fixed mtu channged by cache aligned
cxgb4/chtls: Fix tid stuck due to wrong update of qid
i40e: fix potential NULL pointer dereferencing
net: stmmac: use __napi_schedule() for PREEMPT_RT
can: mcp251xfd: mcp251xfd_handle_rxif_one(): fix wrong NULL pointer check
...
tcp_disconnect() expects the caller acquires the sock lock,
but mptcp_disconnect() is not doing that. Add the missing
required lock.
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Fixes: 76e2a55d1625 ("mptcp: better msk-level shutdown.")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Link: https://lore.kernel.org/r/f818e82b58a556feeb71dcccc8bf1c87aafc6175.1610638176.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Pull HID fixes from Jiri Kosina:
- memory leak fix for Wacom driver (Ping Cheng)
- various trivial small fixes, cleanups and device ID additions
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
HID: logitech-hidpp: Add product ID for MX Ergo in Bluetooth mode
HID: Ignore battery for Elan touchscreen on ASUS UX550
HID: logitech-dj: add the G602 receiver
HID: wiimote: remove h from printk format specifier
HID: uclogic: remove h from printk format specifier
HID: sony: select CONFIG_CRC32
HID: sfh: fix address space confusion
HID: multitouch: Enable multi-input for Synaptics pointstick/touchpad device
HID: wacom: Fix memory leakage caused by kfifo_alloc
Cited patch below blocked the TLS TX device offload unless HW_CSUM
is set. This broke devices that use IP_CSUM && IP6_CSUM.
Here we fix it.
Note that the single HW_TLS_TX feature flag indicates support for
both IPv4/6, hence it should still be disabled in case only one of
(IP_CSUM | IPV6_CSUM) is set.
Fixes: ae0b04b238e2 ("net: Disable NETIF_F_HW_TLS_TX when HW_CSUM is disabled")
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reported-by: Rohit Maheshwari <rohitm@chelsio.com>
Reviewed-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Link: https://lore.kernel.org/r/20210114151215.7061-1-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
To make maintainers' lives easier we're trying to nudge people
towards CCing all the relevant folks on patches, in an attempt
to improve review rate. We have a check in patchwork which validates
the CC list against get_maintainers.pl. It's a little awkward, however,
to force people to CC maintainers who we haven't seen on the mailing
list for years. This series removes from maintainers folks who didn't
provide any tag (incl. authoring a patch) in the last 5 years.
To ensure reasonable signal to noise ratio we only considered
MAINTAINERS entries which had more than 100 patches fall under
them in that time period.
All this is purely a process-greasing exercise, I hope nobody
sees this series as an affront. Most folks are moved to CREDITS,
a couple entries are simply removed.
The following inactive maintainers are kept, because they indicated
the intention to come back in the near future:
- Veaceslav Falico (bonding)
- Christian Benvenuti (Cisco drivers)
- Felix Fietkau (mtk-eth)
- Mirko Linder (skge/sky2)
Patches in this series contain report from a script which did
the analysis. Big thanks to Jonathan Corbet for help and writing
the script (although I feel like I used it differently than Jon
may have intended ;)). The output format is thus:
Subsystem $name
Changes $reviewed / $total ($percent%) // how many changes to the subsystem had at least one ack/review
Last activity: $date_of_most_recent_patch
$maintainer/reviewer1:
Author $last_commit_authored_by_the_person $how_many_in_5yrs
Committer $last_committed $how_many
Tags $last_tag_like_review_signoff_etc $how_many
$maintainer/reviewer2:
Author $last_commit_authored_by_the_person $how_many_in_5yrs
Committer $last_committed $how_many
Tags $last_tag_like_review_signoff_etc $how_many
Top reviewers: // Top 3 reviewers (who are not listed in MAINTAINERS)
[$count_of_reviews_and_acks]: $email
INACTIVE MAINTAINER $name // maintainer / reviewer who has done nothing in last 5yrs
v2:
- keep Felix and Mirko
Link: https://lore.kernel.org/r/20210114014912.2519931-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
As far as I can tell we haven't heard from Gerrit for roughly
5 years now. DCCP patch would really benefit from some review.
Gerrit was the last maintainer so mark this entry as orphaned.
Subsystem DCCP PROTOCOL
Changes 38 / 166 (22%)
(No activity)
Top reviewers:
[6]: kstewart@linuxfoundation.org
[6]: allison@lohutok.net
[5]: edumazet@google.com
INACTIVE MAINTAINER Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
While ENA has 3 reviewers and 2 maintainers, we mostly see review
tags and comments from the maintainers. While we very much appreciate
Zorik's invovment in the community let's trim the reviewer list
down to folks we've seen tags from.
Subsystem AMAZON ETHERNET DRIVERS
Changes 13 / 269 (4%)
Last activity: 2020-11-24
Netanel Belgazal <netanel@amazon.com>:
Author 24dee0c7478d 2019-12-10 00:00:00 43
Tags 0e3a3f6dacf0 2020-07-21 00:00:00 47
Arthur Kiyanovski <akiyano@amazon.com>:
Author 0e3a3f6dacf0 2020-07-21 00:00:00 79
Tags 09323b3bca95 2020-11-24 00:00:00 104
Guy Tzalik <gtzalik@amazon.com>:
Tags 713865da3c62 2020-09-10 00:00:00 3
Saeed Bishara <saeedb@amazon.com>:
Tags 470793a78ce3 2020-02-11 00:00:00 2
Zorik Machulsky <zorik@amazon.com>:
Top reviewers:
[4]: sameehj@amazon.com
[3]: snelson@pensando.io
[3]: shayagr@amazon.com
INACTIVE MAINTAINER Zorik Machulsky <zorik@amazon.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jay was not active in recent years and does not have plans
to return to work on ATLX drivers.
Subsystem ATLX ETHERNET DRIVERS
Changes 20 / 116 (17%)
Last activity: 2020-02-24
Jay Cliburn <jcliburn@gmail.com>:
Chris Snook <chris.snook@gmail.com>:
Tags ea973742140b 2020-02-24 00:00:00 1
Top reviewers:
[4]: andrew@lunn.ch
[2]: kuba@kernel.org
[2]: o.rempel@pengutronix.de
INACTIVE MAINTAINER Jay Cliburn <jcliburn@gmail.com>
Acked-by: Chris Snook <chris.snook@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Both virtio net and napi_get_frags() allocate skbs
with a very small skb->head
While using page fragments instead of a kmalloc backed skb->head might give
a small performance improvement in some cases, there is a huge risk of
under estimating memory usage.
For both GOOD_COPY_LEN and GRO_MAX_HEAD, we can fit at least 32 allocations
per page (order-3 page in x86), or even 64 on PowerPC
We have been tracking OOM issues on GKE hosts hitting tcp_mem limits
but consuming far more memory for TCP buffers than instructed in tcp_mem[2]
Even if we force napi_alloc_skb() to only use order-0 pages, the issue
would still be there on arches with PAGE_SIZE >= 32768
This patch makes sure that small skb head are kmalloc backed, so that
other objects in the slab page can be reused instead of being held as long
as skbs are sitting in socket queues.
Note that we might in the future use the sk_buff napi cache,
instead of going through a more expensive __alloc_skb()
Another idea would be to use separate page sizes depending
on the allocated length (to never have more than 4 frags per page)
I would like to thank Greg Thelen for his precious help on this matter,
analysing crash dumps is always a time consuming task.
Fixes: fd11a83dd363 ("net: Pull out core bits of __netdev_alloc_skb and add __napi_alloc_skb")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Greg Thelen <gthelen@google.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://lore.kernel.org/r/20210113161819.1155526-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In general, device drivers should not be enabled by default.
Fixes: 657bc1d10bfc23ac ("r8153_ecm: avoid to be prior to r8152 driver")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20210113144309.1384615-1-geert+renesas@glider.be
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The Synopsys TSN MAC supports Qbv base times in the past, but only up to a
certain limit. As a result, a taprio qdisc configuration with a small
base time (for example when treating the base time as a simple phase
offset) is not applied by the hardware and silently ignored.
This was observed on an NXP i.MX8MPlus device, but likely affects all
TSN-variants of the MAC.
Fix the issue by making sure the base time is in the future, pushing it by
an integer amount of cycle times if needed. (a similar check is already
done in several other taprio implementations, see for example
drivers/net/ethernet/intel/igc/igc_tsn.c#L116 or
drivers/net/dsa/sja1105/sja1105_ptp.h#L39).
Fixes: b60189e0392f ("net: stmmac: Integrate EST with TAPRIO scheduler API")
Signed-off-by: Yannick Vignon <yannick.vignon@nxp.com>
Link: https://lore.kernel.org/r/20210113131557.24651-2-yannick.vignon@oss.nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When configuring a 802.1Qbv schedule through the tc taprio qdisc on an NXP
i.MX8MPlus device, the effective cycle time differed from the requested one
by N*96ns, with N number of entries in the Qbv Gate Control List. This is
because the driver was adding a 96ns margin to each interval of the GCL,
apparently to account for the IPG. The problem was observed on NXP
i.MX8MPlus devices but likely affected all devices relying on the same
configuration callback (dwmac 4.00, 4.10, 5.10 variants).
Fix the issue by removing the margins, and simply setup the MAC with the
provided cycle time value. This is the behavior expected by the user-space
API, as altering the Qbv schedule timings would break standards conformance.
This is also the behavior of several other Ethernet MAC implementations
supporting taprio, including the dwxgmac variant of stmmac.
Fixes: 504723af0d85 ("net: stmmac: Add basic EST support for GMAC5+")
Signed-off-by: Yannick Vignon <yannick.vignon@nxp.com>
Link: https://lore.kernel.org/r/20210113131557.24651-1-yannick.vignon@oss.nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
A function has a different name between their prototype
and its kernel-doc markup:
../net/tipc/link.c:2551: warning: expecting prototype for link_reset_stats(). Prototype was for tipc_link_reset_stats() instead
../net/tipc/node.c:1678: warning: expecting prototype for is the general link level function for message sending(). Prototype was for tipc_node_xmit() instead
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We need to unregister the netdevice if config failed.
.ndo_uninit takes care of most of the heavy lifting.
This was uncovered by recent commit c269a24ce057 ("net: make
free_netdev() more lenient with unregistering devices").
Previously the partially-initialized device would be left
in the system.
Reported-and-tested-by: syzbot+2393580080a2da190f04@syzkaller.appspotmail.com
Fixes: e2f1f072db8d ("sit: allow to configure 6rd tunnels via netlink")
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Link: https://lore.kernel.org/r/20210114012947.2515313-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The Logitech MX Ergo trackball supports HID++ 4.5 over Bluetooth. Add its
product ID to the table so we can get battery monitoring support.
(The hid-logitech-hidpp driver already recognizes it when connected via
a Unifying Receiver.)
[jkosina@suse.cz: fix whitespace damage]
Signed-off-by: Nicholas Miell <nmiell@gmail.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Since the original mtu is not used when the mtu is updated,
the mtu is aligned with cache, this will get an incorrect.
For example, if you want to configure the mtu to be 1500,
but mtu 1536 is configured in fact.
Fixed: eaf4fac478077 ("net: stmmac: Do not accept invalid MTU values")
Signed-off-by: David Wu <david.wu@rock-chips.com>
Link: https://lore.kernel.org/r/20210113034109.27865-1-david.wu@rock-chips.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
TID stuck is seen when there is a race in
CPL_PASS_ACCEPT_RPL/CPL_ABORT_REQ and abort is arriving
before the accept reply, which sets the queue number.
In this case HW ends up sending CPL_ABORT_RPL_RSS to an
incorrect ingress queue.
V1->V2:
- Removed the unused variable len in chtls_set_quiesce_ctrl().
V2->V3:
- As kfree_skb() has a check for null skb, so removed this
check before calling kfree_skb() in func chtls_send_reset().
Fixes: cc35c88ae4db ("crypto : chtls - CPL handler definition")
Signed-off-by: Rohit Maheshwari <rohitm@chelsio.com>
Signed-off-by: Ayush Sawal <ayush.sawal@chelsio.com>
Link: https://lore.kernel.org/r/20210112053600.24590-1-ayush.sawal@chelsio.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Currently, the function i40e_construct_skb_zc only frees the input xdp
buffer when the output skb is successfully built. On error, the
function i40e_clean_rx_irq_zc does not commit anything for the current
packet descriptor and simply exits the packet descriptor processing
loop, with the plan to restart the processing of this descriptor on
the next invocation. Therefore, on error the ring next-to-clean
pointer should not advance, the xdp i.e. *bi buffer should not be
freed and the current buffer info should not be invalidated by setting
*bi to NULL. Therefore, the *bi should only be set to NULL when the
function i40e_construct_skb_zc is successful, otherwise a NULL *bi
will be dereferenced when the work for the current descriptor is
eventually restarted.
Fixes: 3b4f0b66c2b3 ("i40e, xsk: Migrate to new MEM_TYPE_XSK_BUFF_POOL")
Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>
Acked-by: Björn Töpel <bjorn.topel@intel.com>
Link: https://lore.kernel.org/r/20210111181138.49757-1-cristian.dumitrescu@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'linux-can-fixes-for-5.11-20210113' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
Marc Kleine-Budde says:
====================
pull-request: can 2021-01-13
The first patch is by Oliver Hartkopp for the CAn ISO-TP protocol and fixes a
kernel information leak to userspace.
The last patch is by Qinglang Miao for the mcp251xfd driver and fixes a NULL
pointer check to work on the correct variable.
* tag 'linux-can-fixes-for-5.11-20210113' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can:
can: mcp251xfd: mcp251xfd_handle_rxif_one(): fix wrong NULL pointer check
can: isotp: isotp_getname(): fix kernel information leak
====================
Link: https://lore.kernel.org/r/20210113212158.925513-1-mkl@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Use of __napi_schedule_irqoff() is not safe with PREEMPT_RT in which
hard interrupts are not disabled while running the threaded interrupt.
Using __napi_schedule() works for both PREEMPT_RT and mainline Linux,
just at the cost of an additional check if interrupts are disabled for
mainline (since they are already disabled).
Similar to the fix done for enetc commit 215602a8d212 ("enetc: use
napi_schedule to be compatible with PREEMPT_RT")
Signed-off-by: Seb Laveze <sebastien.laveze@nxp.com>
Link: https://lore.kernel.org/r/20210112140121.1487619-1-sebastien.laveze@oss.nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
If alloc_canfd_skb() returns NULL, 'cfg' is an uninitialized variable, so we
should check 'skb' rather than 'cfd' after calling alloc_canfd_skb(priv->ndev,
&cfd).
Fixes: 55e5b97f003e ("can: mcp25xxfd: add driver for Microchip MCP25xxFD SPI CAN")
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20210113073100.79552-1-miaoqinglang@huawei.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Here are some piled fixes, hopefully the last big one for 5.11.
All changes are device-specific small fixes, and majority of
commits are for ASoC while USB-audio got a bit large changes for
addressing the regression for devices with quirks.
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Merge tag 'sound-5.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Here are some piled fixes, hopefully the last big one for 5.11.
All changes are device-specific small fixes, and majority of commits
are for ASoC while USB-audio got a bit large changes for addressing
the regression for devices with quirks"
* tag 'sound-5.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (31 commits)
ALSA: hda/hdmi - enable runtime pm for CI AMD display audio
ALSA: firewire-tascam: Fix integer overflow in midi_port_work()
ALSA: fireface: Fix integer overflow in transmit_midi_msg()
ALSA: hda/tegra: fix tegra-hda on tegra30 soc
clk: tegra30: Add hda clock default rates to clock driver
ALSA: doc: Fix reference to mixart.rst
ALSA: usb-audio: Fix implicit feedback sync setup for Pioneer devices
ALSA: usb-audio: Annotate the endpoint index in audioformat
ALSA: usb-audio: Avoid unnecessary interface re-setup
ALSA: usb-audio: Choose audioformat of a counter-part substream
ALSA: usb-audio: Fix the missing endpoints creations for quirks
ALSA: hda/realtek: fix right sounds and mute/micmute LEDs for HP machines
ASoC: AMD Renoir - add DMI entry for Lenovo ThinkPad X395
ASoC: amd: Replacing MSI with Legacy IRQ model
ASoC: AMD Renoir - add DMI entry for Lenovo ThinkPad E14 Gen 2
ASoC: meson: axg-tdm-interface: fix loopback
ASoC: meson: axg-tdmin: fix axg skew offset
ASoC: max98373: don't access volatile registers in bias level off
ASoC: rt711: mutex between calibration and power state changes
ASoC: Intel: haswell: Add missing pm_ops
...
The call state may be changed at any time by the data-ready routine in
response to received packets, so if the call state is to be read and acted
upon several times in a function, READ_ONCE() must be used unless the call
state lock is held.
As it happens, we used READ_ONCE() to read the state a few lines above the
unmarked read in rxrpc_input_data(), so use that value rather than
re-reading it.
Fixes: a158bdd3247b ("rxrpc: Fix call timeouts")
Signed-off-by: Baptiste Lepers <baptiste.lepers@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/161046715522.2450566.488819910256264150.stgit@warthog.procyon.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Clang static analysis reports the following:
net/rxrpc/key.c:657:11: warning: Assigned value is garbage or undefined
toksize = toksizes[tok++];
^ ~~~~~~~~~~~~~~~
rxrpc_read() contains two consecutive loops. The first loop calculates the
token sizes and stores the results in toksizes[] and the second one uses
the array. When there is an error in identifying the token in the first
loop, the token is skipped, no change is made to the toksizes[] array.
When the same error happens in the second loop, the token is not skipped.
This will cause the toksizes[] array to be out of step and will overrun
past the calculated sizes.
Fix this by making both loops log a message and return an error in this
case. This should only happen if a new token type is incompletely
implemented, so it should normally be impossible to trigger this.
Fixes: 9a059cd5ca7d ("rxrpc: Downgrade the BUG() for unsupported token type in rxrpc_read()")
Reported-by: Tom Rix <trix@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/161046503122.2445787.16714129930607546635.stgit@warthog.procyon.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
1) Pass conntrack -f to specify family in netfilter conntrack helper
selftests, from Chen Yi.
2) Honor hashsize modparam from nf_conntrack_buckets sysctl,
from Jesper D. Brouer.
3) Fix memleak in nf_nat_init() error path, from Dinghao Liu.
* git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf:
netfilter: nf_nat: Fix memleak in nf_nat_init
netfilter: conntrack: fix reading nf_conntrack_buckets
selftests: netfilter: Pass family parameter "-f" to conntrack tool
====================
Link: https://lore.kernel.org/r/20210112222033.9732-1-pablo@netfilter.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Karsten Graul says:
====================
net/smc: fix out of bound access in netlink interface
Both patches fix possible out-of-bounds reads. The original code expected
that snprintf() reads len-1 bytes from source and appends the terminating
null, but actually snprintf() first copies len bytes and finally overwrites
the last byte with a null.
Fix this by using memcpy() and terminating the string afterwards.
====================
Link: https://lore.kernel.org/r/20210112162122.26832-1-kgraul@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Using snprintf() to convert not null-terminated strings to null
terminated strings may cause out of bounds read in the source string.
Therefore use memcpy() and terminate the target string with a null
afterwards.
Fixes: a3db10efcc4c ("net/smc: Add support for obtaining SMCR device list")
Signed-off-by: Guvenc Gulce <guvenc@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
smc_clc_get_hostname() sets the host pointer to a buffer
which is not NULL-terminated (see smc_clc_init()).
Reported-by: syzbot+f4708c391121cfc58396@syzkaller.appspotmail.com
Fixes: 099b990bd11a ("net/smc: Add support for obtaining system information")
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Paolo Abeni says:
====================
mptcp: a couple of fixes
This series includes two related fixes addressing potential divide by 0
bugs in the MPTCP datapath.
====================
Link: https://lore.kernel.org/r/cover.1610471474.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Instead of re-implementing most of inet_shutdown, re-use
such helper, and implement the MPTCP-specific bits at the
'proto' level.
The msk-level disconnect() can now be invoked, lets provide a
suitable implementation.
As a side effect, this fixes bad state management for listener
sockets. The latter could lead to division by 0 oops since
commit ea4ca586b16f ("mptcp: refine MPTCP-level ack scheduling").
Fixes: 43b54c6ee382 ("mptcp: Use full MPTCP-level disconnect state machine")
Fixes: ea4ca586b16f ("mptcp: refine MPTCP-level ack scheduling")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Syzkaller found a way to trigger division by zero
in mptcp_subflow_cleanup_rbuf().
The current checks implemented into tcp_can_send_ack()
are too week, let's be more accurate.
Reported-by: Christoph Paasch <cpaasch@apple.com>
Fixes: ea4ca586b16f ("mptcp: refine MPTCP-level ack scheduling")
Fixes: fd8976790a6c ("mptcp: be careful on MPTCP-level ack.")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Michael Chan says:
====================
bnxt_en: Bug fixes.
This series has 2 fixes. The first one fixes a resource accounting error
with the RDMA driver loaded and the second one fixes the firmware
flashing sequence after defragmentation.
====================
Link: https://lore.kernel.org/r/1610357200-30755-1-git-send-email-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When the FW tells the driver to retry the INSTALL_UPDATE command after
it has cleared the NVM area, the driver is not clearing the previously
used ALLOWED_TO_DEFRAG flag. As a result the FW tries to defrag the NVM
area a second time in a loop and can fail the request.
Fixes: 1432c3f6a6ca ("bnxt_en: Retry installing FW package under NO_SPACE error condition.")
Signed-off-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The function bnxt_get_ulp_stat_ctxs() does not count the stats contexts
used by the RDMA driver correctly when the RDMA driver is freeing the
MSIX vectors. It assumes that if the RDMA driver is registered, the
additional stats contexts will be needed. This is not true when the
RDMA driver is about to unregister and frees the MSIX vectors.
This slight error leads to over accouting of the stats contexts needed
after the RDMA driver has unloaded. This will cause some firmware
warning and error messages in dmesg during subsequent config. changes
or ifdown/ifup.
Fix it by properly accouting for extra stats contexts only if the
RDMA driver is registered and MSIX vectors have been successfully
requested.
Fixes: c027c6b4e91f ("bnxt_en: get rid of num_stat_ctxs variable")
Reviewed-by: Yongping Zhang <yongping.zhang@broadcom.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit enables the use of the r8153_ecm driver, introduced with
commit c1aedf015ebdd0 ("net/usb/r8153_ecm: support ECM mode for
RTL8153") for the Lenovo Powered USB-C Hub (17ef:721e) based on the
Realtek RTL8153B chip.
This results in the following driver preference:
- if r8152 is available, use the r8152 driver
- if r8152 is not available, use the r8153_ecm driver
This is done to prevent the NIC from constantly sending pause frames
when the host system enters standby (fixed by using the r8152 driver
in "r8152: Add Lenovo Powered USB-C Travel Hub"), while still allowing
the device to work with the r8153_ecm driver as a fallback.
Signed-off-by: Leon Schuermann <leon@is.currently.online>
Tested-by: Leon Schuermann <leon@is.currently.online>
Link: https://lore.kernel.org/r/20210111190312.12589-3-leon@is.currently.online
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This USB-C Hub (17ef:721e) based on the Realtek RTL8153B chip used to
use the cdc_ether driver. However, using this driver, with the system
suspended the device constantly sends pause-frames as soon as the
receive buffer fills up. This causes issues with other devices, where
some Ethernet switches stop forwarding packets altogether.
Using the Realtek driver (r8152) fixes this issue. Pause frames are no
longer sent while the host system is suspended.
Signed-off-by: Leon Schuermann <leon@is.currently.online>
Tested-by: Leon Schuermann <leon@is.currently.online>
Link: https://lore.kernel.org/r/20210111190312.12589-2-leon@is.currently.online
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Florian reported a use-after-free bug in devlink_nl_port_fill found with
KASAN:
(devlink_nl_port_fill)
(devlink_port_notify)
(devlink_port_unregister)
(dsa_switch_teardown.part.3)
(dsa_tree_teardown_switches)
(dsa_unregister_switch)
(bcm_sf2_sw_remove)
(platform_remove)
(device_release_driver_internal)
(device_links_unbind_consumers)
(device_release_driver_internal)
(device_driver_detach)
(unbind_store)
Allocated by task 31:
alloc_netdev_mqs+0x5c/0x50c
dsa_slave_create+0x110/0x9c8
dsa_register_switch+0xdb0/0x13a4
b53_switch_register+0x47c/0x6dc
bcm_sf2_sw_probe+0xaa4/0xc98
platform_probe+0x90/0xf4
really_probe+0x184/0x728
driver_probe_device+0xa4/0x278
__device_attach_driver+0xe8/0x148
bus_for_each_drv+0x108/0x158
Freed by task 249:
free_netdev+0x170/0x194
dsa_slave_destroy+0xac/0xb0
dsa_port_teardown.part.2+0xa0/0xb4
dsa_tree_teardown_switches+0x50/0xc4
dsa_unregister_switch+0x124/0x250
bcm_sf2_sw_remove+0x98/0x13c
platform_remove+0x44/0x5c
device_release_driver_internal+0x150/0x254
device_links_unbind_consumers+0xf8/0x12c
device_release_driver_internal+0x84/0x254
device_driver_detach+0x30/0x34
unbind_store+0x90/0x134
What happens is that devlink_port_unregister emits a netlink
DEVLINK_CMD_PORT_DEL message which associates the devlink port that is
getting unregistered with the ifindex of its corresponding net_device.
Only trouble is, the net_device has already been unregistered.
It looks like we can stub out the search for a corresponding net_device
if we clear the devlink_port's type. This looks like a bit of a hack,
but also seems to be the reason why the devlink_port_type_clear function
exists in the first place.
Fixes: 3122433eb533 ("net: dsa: Register devlink ports before calling DSA driver setup()")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Florian fainelli <f.fainelli@gmail.com>
Reported-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20210112004831.3778323-1-olteanv@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Currently the following happens when a DSA master driver unbinds while
there are DSA switches attached to it:
$ echo 0000:00:00.5 > /sys/bus/pci/drivers/mscc_felix/unbind
------------[ cut here ]------------
WARNING: CPU: 0 PID: 392 at net/core/dev.c:9507
Call trace:
rollback_registered_many+0x5fc/0x688
unregister_netdevice_queue+0x98/0x120
dsa_slave_destroy+0x4c/0x88
dsa_port_teardown.part.16+0x78/0xb0
dsa_tree_teardown_switches+0x58/0xc0
dsa_unregister_switch+0x104/0x1b8
felix_pci_remove+0x24/0x48
pci_device_remove+0x48/0xf0
device_release_driver_internal+0x118/0x1e8
device_driver_detach+0x28/0x38
unbind_store+0xd0/0x100
Located at the above location is this WARN_ON:
/* Notifier chain MUST detach us all upper devices. */
WARN_ON(netdev_has_any_upper_dev(dev));
Other stacked interfaces, like VLAN, do indeed listen for
NETDEV_UNREGISTER on the real_dev and also unregister themselves at that
time, which is clearly the behavior that rollback_registered_many
expects. But DSA interfaces are not VLAN. They have backing hardware
(platform devices, PCI devices, MDIO, SPI etc) which have a life cycle
of their own and we can't just trigger an unregister from the DSA
framework when we receive a netdev notifier that the master unregisters.
Luckily, there is something we can do, and that is to inform the driver
core that we have a runtime dependency to the DSA master interface's
device, and create a device link where that is the supplier and we are
the consumer. Having this device link will make the DSA switch unbind
before the DSA master unbinds, which is enough to avoid the WARN_ON from
rollback_registered_many.
Note that even before the blamed commit, DSA did nothing intelligent
when the master interface got unregistered either. See the discussion
here:
https://lore.kernel.org/netdev/20200505210253.20311-1-f.fainelli@gmail.com/
But this time, at least the WARN_ON is loud enough that the
upper_dev_link commit can be blamed.
The advantage with this approach vs dev_hold(master) in the attached
link is that the latter is not meant for long term reference counting.
With dev_hold, the only thing that will happen is that when the user
attempts an unbind of the DSA master, netdev_wait_allrefs will keep
waiting and waiting, due to DSA keeping the refcount forever. DSA would
not access freed memory corresponding to the master interface, but the
unbind would still result in a freeze. Whereas with device links,
graceful teardown is ensured. It even works with cascaded DSA trees.
$ echo 0000:00:00.2 > /sys/bus/pci/drivers/fsl_enetc/unbind
[ 1818.797546] device swp0 left promiscuous mode
[ 1819.301112] sja1105 spi2.0: Link is Down
[ 1819.307981] DSA: tree 1 torn down
[ 1819.312408] device eno2 left promiscuous mode
[ 1819.656803] mscc_felix 0000:00:00.5: Link is Down
[ 1819.667194] DSA: tree 0 torn down
[ 1819.711557] fsl_enetc 0000:00:00.2 eno2: Link is Down
This approach allows us to keep the DSA framework absolutely unchanged,
and the driver core will just know to unbind us first when the master
goes away - as opposed to the large (and probably impossible) rework
required if attempting to listen for NETDEV_UNREGISTER.
As per the documentation at Documentation/driver-api/device_link.rst,
specifying the DL_FLAG_AUTOREMOVE_CONSUMER flag causes the device link
to be automatically purged when the consumer fails to probe or later
unbinds. So we don't need to keep the consumer_link variable in struct
dsa_switch.
Fixes: 2f1e8ea726e9 ("net: dsa: link interfaces with the DSA master to get rid of lockdep warnings")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20210111230943.3701806-1-olteanv@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Commit bedd8d78aba3 ("net: phy: smsc: LAN8710/20: add phy refclk in
support") added the phy clk support. The commit already checks if
clk_get_optional() throw an error but instead of returning the error it
ignores it.
Fixes: bedd8d78aba3 ("net: phy: smsc: LAN8710/20: add phy refclk in support")
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20210111085932.28680-1-m.felsch@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In commit 826f328e2b7e ("net: dcb: Validate netlink message in DCB
handler"), Linux started rejecting RTM_GETDCB netlink messages if they
contained a set-like DCB_CMD_ command.
The reason was that privileges were only verified for RTM_SETDCB messages,
but the value that determined the action to be taken is the command, not
the message type. And validation of message type against the DCB command
was the obvious missing piece.
Unfortunately it turns out that mlnx_qos, a somewhat widely deployed tool
for configuration of DCB, accesses the DCB set-like APIs through
RTM_GETDCB.
Therefore do not bounce the discrepancy between message type and command.
Instead, in addition to validating privileges based on the actual message
type, validate them also based on the expected message type. This closes
the loophole of allowing DCB configuration on non-admin accounts, while
maintaining backward compatibility.
Fixes: 2f90b8657ec9 ("ixgbe: this patch adds support for DCB to the kernel and ixgbe driver")
Fixes: 826f328e2b7e ("net: dcb: Validate netlink message in DCB handler")
Signed-off-by: Petr Machata <petrm@nvidia.com>
Link: https://lore.kernel.org/r/a3edcfda0825f2aa2591801c5232f2bbf2d8a554.1610384801.git.me@pmachata.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Highlights include:
Bugfixes:
- Fix parsing of link-local IPv6 addresses
- Fix confusing logging of mount errors that was introduced by the
fsopen() patchset.
- Fix a tracing use after free in _nfs4_do_setlk()
- Layout return-on-close fixes when called from nfs4_evict_inode()
- Layout segments were being leaked in pnfs_generic_clear_request_commit()
- Don't leak DS commits in pnfs_generic_retry_commit()
- Fix an Oopsable use-after-free when nfs_delegation_find_inode_server()
calls iput() on an inode after the super block has gone away.
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Merge tag 'nfs-for-5.11-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client fixes from Trond Myklebust:
"Highlights include:
- Fix parsing of link-local IPv6 addresses
- Fix confusing logging of mount errors that was introduced by the
fsopen() patchset.
- Fix a tracing use after free in _nfs4_do_setlk()
- Layout return-on-close fixes when called from nfs4_evict_inode()
- Layout segments were being leaked in
pnfs_generic_clear_request_commit()
- Don't leak DS commits in pnfs_generic_retry_commit()
- Fix an Oopsable use-after-free when nfs_delegation_find_inode_server()
calls iput() on an inode after the super block has gone away"
* tag 'nfs-for-5.11-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFS: nfs_igrab_and_active must first reference the superblock
NFS: nfs_delegation_find_inode_server must first reference the superblock
NFS/pNFS: Fix a leak of the layout 'plh_outstanding' counter
NFS/pNFS: Don't leak DS commits in pnfs_generic_retry_commit()
NFS/pNFS: Don't call pnfs_free_bucket_lseg() before removing the request
pNFS: Stricter ordering of layoutget and layoutreturn
pNFS: Clean up pnfs_layoutreturn_free_lsegs()
pNFS: We want return-on-close to complete when evicting the inode
pNFS: Mark layout for return if return-on-close was not sent
net: sunrpc: interpret the return value of kstrtou32 correctly
NFS: Adjust fs_context error logging
NFS4: Fix use-after-free in trace_event_raw_event_nfs4_set_lock
initiator could specify IDs for any configured backing store device,
not just the ones explicitly made visible to the host.
The remedy is to honor the access control list when doing ID
descriptor lookups.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Merge tag 'mkp-scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi
Pull SCSI target fix from Martin Petersen:
"This addresses an issue in the SCSI target subsystem. A connected
initiator could specify IDs for any configured backing store device,
not just the ones explicitly made visible to the host.
The remedy is to honor the access control list when doing ID
descriptor lookups"
* tag 'mkp-scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi:
scsi: target: Fix XCOPY NAA identifier lookup
We are able to power down the GPU and audio via the GPU driver
so flag these asics as supporting runtime pm.
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20210105175245.963451-1-alexander.deucher@amd.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
As snd_fw_async_midi_port.consume_bytes is unsigned int, and
NSEC_PER_SEC is 1000000000L, the second multiplication in
port->consume_bytes * 8 * NSEC_PER_SEC / 31250
always overflows on 32-bit platforms, truncating the result. Fix this
by precalculating "NSEC_PER_SEC / 31250", which is an integer constant.
Note that this assumes port->consume_bytes <= 16777.
Fixes: 531f471834227d03 ("ALSA: firewire-lib/firewire-tascam: localize async midi port")
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20210111130251.361335-3-geert+renesas@glider.be
Signed-off-by: Takashi Iwai <tiwai@suse.de>
As snd_ff.rx_bytes[] is unsigned int, and NSEC_PER_SEC is 1000000000L,
the second multiplication in
ff->rx_bytes[port] * 8 * NSEC_PER_SEC / 31250
always overflows on 32-bit platforms, truncating the result. Fix this
by precalculating "NSEC_PER_SEC / 31250", which is an integer constant.
Note that this assumes ff->rx_bytes[port] <= 16777.
Fixes: 19174295788de77d ("ALSA: fireface: add transaction support")
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20210111130251.361335-2-geert+renesas@glider.be
Signed-off-by: Takashi Iwai <tiwai@suse.de>
