Fabrice Gasnier found and fixed a regression I introduced with v6.13-rc1
when converting the stm32 pwm driver to support the new waveform stuff.
On some hardware variants this completely broke the driver.
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Merge tag 'pwm/for-6.13-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux
Pull pwm fix from Uwe Kleine-König:
"Fix regression in pwm-stm32 driver when converting to new waveform
support
Fabrice Gasnier found and fixed a regression I introduced with
v6.13-rc1 when converting the stm32 pwm driver to support the new
waveform stuff. On some hardware variants this completely broke the
driver"
* tag 'pwm/for-6.13-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux:
pwm: stm32: Fix complementary output in round_waveform_tohw()
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Merge tag 'v6.13-rc3-ksmbd-server-fixes' of git://git.samba.org/ksmbd
Pull smb server fixes from Steve French:
- Two fixes for better handling maximum outstanding requests
- Fix simultaneous negotiate protocol race
* tag 'v6.13-rc3-ksmbd-server-fixes' of git://git.samba.org/ksmbd:
ksmbd: conn lock to serialize smb2 negotiate
ksmbd: fix broken transfers when exceeding max simultaneous operations
ksmbd: count all requests in req_running counter
Ido Schimmel says:
====================
net: fib_rules: Add flow label selector support
In some deployments users would like to encode path information into
certain bits of the IPv6 flow label, the UDP source port and the DSCP
and use this information to route packets accordingly.
Redirecting traffic to a routing table based on the flow label is not
currently possible with Linux as FIB rules cannot match on it despite
the flow label being available in the IPv6 flow key.
This patchset extends FIB rules to match on the flow label with a mask.
Future patches will add mask attributes to L4 ports and DSCP matches.
Patches #1-#5 gradually extend FIB rules to match on the flow label.
Patches #6-#7 allow user space to specify a flow label in route get
requests. This is useful for both debugging and testing.
Patch #8 adjusts the fib6_table_lookup tracepoint to print the flow
label to the trace buffer for better observability.
Patch #9 extends the FIB rule selftest with flow label test cases while
utilizing the route get functionality from patch #6.
====================
Link: https://patch.msgid.link/20241216171201.274644-1-idosch@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Add tests for the new FIB rule flow label selector. Test both good and bad
flows and with both input and output routes.
# ./fib_rule_tests.sh
IPv6 FIB rule tests
[...]
TEST: rule6 check: flowlabel redirect to table [ OK ]
TEST: rule6 check: flowlabel no redirect to table [ OK ]
TEST: rule6 del by pref: flowlabel redirect to table [ OK ]
TEST: rule6 check: iif flowlabel redirect to table [ OK ]
TEST: rule6 check: iif flowlabel no redirect to table [ OK ]
TEST: rule6 del by pref: iif flowlabel redirect to table [ OK ]
TEST: rule6 check: flowlabel masked redirect to table [ OK ]
TEST: rule6 check: flowlabel masked no redirect to table [ OK ]
TEST: rule6 del by pref: flowlabel masked redirect to table [ OK ]
TEST: rule6 check: iif flowlabel masked redirect to table [ OK ]
TEST: rule6 check: iif flowlabel masked no redirect to table [ OK ]
TEST: rule6 del by pref: iif flowlabel masked redirect to table [ OK ]
[...]
Tests passed: 268
Tests failed: 0
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The different parameters affecting the IPv6 route lookup are printed to
the trace buffer by the fib6_table_lookup tracepoint. Add the IPv6 flow
label for better observability as it can affect the route lookup both in
terms of multipath hash calculation and policy based routing (FIB
rules). Example:
# echo 1 > /sys/kernel/tracing/events/fib6/fib6_table_lookup/enable
# ip -6 route get ::1 flowlabel 0x12345 ipproto udp sport 12345 dport 54321 &> /dev/null
# cat /sys/kernel/tracing/trace_pipe
ip-358 [010] ..... 44.897484: fib6_table_lookup: table 255 oif 0 iif 1 proto 17 ::/12345 -> ::1/54321 flowlabel 0x12345 tos 0 scope 0 flags 0 ==> dev lo gw :: err 0
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The default IPv6 multipath hash policy takes the flow label into account
when calculating a multipath hash and previous patches added a flow
label selector to IPv6 FIB rules.
Allow user space to specify a flow label in route get requests by adding
a new netlink attribute and using its value to populate the "flowlabel"
field in the IPv6 flow info structure prior to a route lookup.
Deny the attribute in RTM_{NEW,DEL}ROUTE requests by checking for it in
rtm_to_fib6_config() and returning an error if present.
A subsequent patch will use this capability to test the new flow label
selector in IPv6 FIB rules.
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Now that both IPv4 and IPv6 correctly handle the new flow label
attributes, enable user space to configure FIB rules that make use of
the flow label by changing the policy to stop rejecting them and
accepting 32 bit values in big-endian byte order.
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Implement support for the new flow label selector which allows IPv6 FIB
rules to match on the flow label with a mask. Ensure that both flow
label attributes are specified (or none) and that the mask is valid.
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
IPv4 FIB rules cannot match on flow label so reject requests that try to
add such rules. Do that in the IPv4 configure callback as the netlink
policy resides in the core and used by both IPv4 and IPv6.
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Add new FIB rule attributes which will allow user space to match on the
IPv6 flow label with a mask. Temporarily set the type of the attributes
to 'NLA_REJECT' while support is being added in the IPv6 code.
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Currently, we don't use the return value from sock_queue_rcv_skb, which
means we may leak skbs if a message is not successfully queued to a
socket.
Instead, ensure that we're freeing the skb where the sock hasn't
otherwise taken ownership of the skb by adding checks on the
sock_queue_rcv_skb() to invoke a kfree on failure.
In doing so, rather than using the 'rc' value to trigger the
kfree_skb(), use the skb pointer itself, which is more explicit.
Also, add a kunit test for the sock delivery failure cases.
Fixes: 4a992bbd36 ("mctp: Implement message fragmentation & reassembly")
Cc: stable@vger.kernel.org
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Link: https://patch.msgid.link/20241218-mctp-next-v2-1-1c1729645eaa@codeconstruct.com.au
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
fwnode_find_mii_timestamper() calls of_parse_phandle_with_fixed_args()
but does not decrement the refcount of the obtained OF node. Add an
of_node_put() call before returning from the function.
This bug was detected by an experimental static analysis tool that I am
developing.
Fixes: bc1bee3b87 ("net: mdiobus: Introduce fwnode_mdiobus_register_phy()")
Signed-off-by: Joe Hattori <joe@pf.is.s.u-tokyo.ac.jp>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20241218035106.1436405-1-joe@pf.is.s.u-tokyo.ac.jp
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'nf-24-12-19' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf
Pablo Neira Ayuso says:
====================
Netfilter/IPVS fixes for net
The following series contains two fixes for Netfilter/IPVS:
1) Possible build failure in IPVS on systems with less than 512MB
memory due to incorrect use of clamp(), from David Laight.
2) Fix bogus lockdep nesting splat with ipset list:set type,
from Phil Sutter.
netfilter pull request 24-12-19
* tag 'nf-24-12-19' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
netfilter: ipset: Fix for recursive locking warning
ipvs: Fix clamp() of ip_vs_conn_tab on small memory systems
====================
Link: https://patch.msgid.link/20241218234137.1687288-1-pablo@netfilter.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The generic MPSM operation added by the previous patch can be used both
for C45 and C22.
Add handlers for C22 operations.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://patch.msgid.link/20241216071957.2587354-6-nikita.yoush@cogentembedded.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Introduce rswitch_etha_mpsm_op() that accepts values for MPSM register
fields and executes the transaction.
This avoids some code duptication, and can be used both for C45 and C22.
Convert C45 read and write operations to use that.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://patch.msgid.link/20241216071957.2587354-5-nikita.yoush@cogentembedded.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Per rswitch datasheet, software can know that mdio operation completed
either by polling MPSM.PSME bit, or via interrupt.
Instead, the driver currently polls for interrupt status bit. Although
this still provides correct result, it requires additional register
operations to clean the interrupt status bits, and generally looks wrong.
Fix it to poll MPSM.PSME bit, as the datasheet suggests.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://patch.msgid.link/20241216071957.2587354-4-nikita.yoush@cogentembedded.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Commit fb9e6039c3 ("net: renesas: rswitch: fix initial MPIC register
setting") converted setting some MPIC fields to FIELD_PREP.
To keep common style, do the same with mii bus related fields of the
same register.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://patch.msgid.link/20241216071957.2587354-3-nikita.yoush@cogentembedded.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
MPSM register is used to execute mdio bus transactions.
There is no need to initialize it early.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://patch.msgid.link/20241216071957.2587354-2-nikita.yoush@cogentembedded.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When rvu_rep_devlink_port_register() fails, free_netdev(ndev) for this
incomplete iteration before going to "exit:" label.
Fixes: 9ed0343f56 ("octeontx2-pf: Add devlink port support")
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Link: https://patch.msgid.link/20241217052326.1086191-1-harshit.m.mogalapalli@oracle.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
If PSAMPLE_ATTR_SAMPLE_PROBABILITY flag is to be sent, the available
size for the packet data has to be adjusted accordingly.
Also, check the error code returned by nla_put_flag.
Fixes: 7b1b2b60c6 ("net: psample: allow using rate as probability")
Signed-off-by: Adrian Moreno <amorenoz@redhat.com>
Reviewed-by: Aaron Conole <aconole@redhat.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20241217113739.3929300-1-amorenoz@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Empty netlink responses from do() are not correct (as opposed to
dump() where not dumping anything is perfectly fine).
We should return an error if the target object does not exist,
in this case if the netdev is down it has no queues.
Fixes: 6b6171db7f ("netdev-genl: Add netlink framework functions for queue")
Reported-by: syzbot+0a884bc2d304ce4af70f@syzkaller.appspotmail.com
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Link: https://patch.msgid.link/20241218022508.815344-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Robert Hodaszi reports that locally terminated traffic towards
VLAN-unaware bridge ports is broken with ocelot-8021q. He is describing
the same symptoms as for commit 1f9fc48fd3 ("net: dsa: sja1105: fix
reception from VLAN-unaware bridges").
For context, the set merged as "VLAN fixes for Ocelot driver":
https://lore.kernel.org/netdev/20240815000707.2006121-1-vladimir.oltean@nxp.com/
was developed in a slightly different form earlier this year, in January.
Initially, the switch was unconditionally configured to set OCELOT_ES0_TAG
when using ocelot-8021q, regardless of port operating mode.
This led to the situation where VLAN-unaware bridge ports would always
push their PVID - see ocelot_vlan_unaware_pvid() - a negligible value
anyway - into RX packets. To strip this in software, we would have needed
DSA to know what private VID the switch chose for VLAN-unaware bridge
ports, and pushed into the packets. This was implemented downstream, and
a remnant of it remains in the form of a comment mentioning
ds->ops->get_private_vid(), as something which would maybe need to be
considered in the future.
However, for upstream, it was deemed inappropriate, because it would
mean introducing yet another behavior for stripping VLAN tags from
VLAN-unaware bridge ports, when one already existed (ds->untag_bridge_pvid).
The latter has been marked as obsolete along with an explanation why it
is logically broken, but still, it would have been confusing.
So, for upstream, felix_update_tag_8021q_rx_rule() was developed, which
essentially changed the state of affairs from "Felix with ocelot-8021q
delivers all packets as VLAN-tagged towards the CPU" into "Felix with
ocelot-8021q delivers all packets from VLAN-aware bridge ports towards
the CPU". This was done on the premise that in VLAN-unaware mode,
there's nothing useful in the VLAN tags, and we can avoid introducing
ds->ops->get_private_vid() in the DSA receive path if we configure the
switch to not push those VLAN tags into packets in the first place.
Unfortunately, and this is when the trainwreck started, the selftests
developed initially and posted with the series were not re-ran.
dsa_software_vlan_untag() was initially written given the assumption
that users of this feature would send _all_ traffic as VLAN-tagged.
It was only partially adapted to the new scheme, by removing
ds->ops->get_private_vid(), which also used to be necessary in
standalone ports mode.
Where the trainwreck became even worse is that I had a second opportunity
to think about this, when the dsa_software_vlan_untag() logic change
initially broke sja1105, in commit 1f9fc48fd3 ("net: dsa: sja1105: fix
reception from VLAN-unaware bridges"). I did not connect the dots that
it also breaks ocelot-8021q, for pretty much the same reason that not
all received packets will be VLAN-tagged.
To be compatible with the optimized Felix control path which runs
felix_update_tag_8021q_rx_rule() to only push VLAN tags when useful (in
VLAN-aware mode), we need to restore the old dsa_software_vlan_untag()
logic. The blamed commit introduced the assumption that
dsa_software_vlan_untag() will see only VLAN-tagged packets, assumption
which is false. What corrupts RX traffic is the fact that we call
skb_vlan_untag() on packets which are not VLAN-tagged in the first
place.
Fixes: 93e4649efa ("net: dsa: provide a software untagging function on RX for VLAN-aware bridges")
Reported-by: Robert Hodaszi <robert.hodaszi@digi.com>
Closes: https://lore.kernel.org/netdev/20241215163334.615427-1-robert.hodaszi@digi.com/
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://patch.msgid.link/20241216135059.1258266-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Tony Nguyen says:
====================
idpf: trigger SW interrupt when exiting wb_on_itr mode
Joshua Hay says:
This patch series introduces SW triggered interrupt support for idpf,
then uses said interrupt to fix a race condition between completion
writebacks and re-enabling interrupts.
* '200GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
idpf: trigger SW interrupt when exiting wb_on_itr mode
idpf: add support for SW triggered interrupts
====================
Link: https://patch.msgid.link/20241217225715.4005644-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Fix the way tcpdump is executed by:
- Using the right variable for the namespace. Currently the use of the
empty "ns" makes the command fail.
- Waiting until it starts to capture to ensure the interesting traffic
is caught on slow systems.
- Using line-buffered output to ensure logs are available when the test
is paused with "-p". Otherwise the last chunk of data might only be
written when tcpdump is killed.
Fixes: 74cc26f416 ("selftests: openvswitch: add interface support")
Signed-off-by: Adrian Moreno <amorenoz@redhat.com>
Acked-by: Eelco Chaudron <echaudro@redhat.com>
Link: https://patch.msgid.link/20241217211652.483016-1-amorenoz@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Tony Nguyen says:
====================
ice: add support for devlink health events
Przemek Kitszel says:
Reports for two kinds of events are implemented, Malicious Driver
Detection (MDD) and Tx hang.
Patches 1, 2, 3: core improvements (checkpatch.pl, devlink extension)
Patch 4: rename current ice devlink/ files
Patches 5, 6, 7: ice devlink health infra + reporters
Mateusz did good job caring for this series, and hardening the code.
* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue:
ice: Add MDD logging via devlink health
ice: add Tx hang devlink health reporter
ice: rename devlink_port.[ch] to port.[ch]
devlink: add devlink_fmsg_dump_skb() function
devlink: add devlink_fmsg_put() macro
checkpatch: don't complain on _Generic() use
====================
Link: https://patch.msgid.link/20241217210835.3702003-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'linux-can-fixes-for-6.13-20241218' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
Marc Kleine-Budde says:
====================
pull-request: can 2024-12-18
There are 2 patches by Matthias Schiffer for the m_can_pci driver that
handles the m_can cores found on the Intel Elkhart Lake processor.
They fix the initialization and the interrupt handling under high CAN
bus load.
* tag 'linux-can-fixes-for-6.13-20241218' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can:
can: m_can: fix missed interrupts with m_can_pci
can: m_can: set init flag earlier in probe
====================
Link: https://patch.msgid.link/20241218121722.2311963-1-mkl@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The bonding documentation had several "insure" which is not
properly used in the context. Suggest to change to "ensure"
to improve readability.
Signed-off-by: shunlizhou <shunlizhou@aliyun.com>
Link: https://patch.msgid.link/20241216135447.57681-1-shunlizhou@aliyun.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
gcc runs into undefined behavior at the end of the three led_polarity_set()
callback functions if it were called with a zero 'modes' argument and it
just ends the function there without returning from it.
This gets flagged by 'objtool' as a function that continues on
to the next one:
drivers/net/phy/aquantia/aquantia_leds.o: warning: objtool: aqr_phy_led_polarity_set+0xf: can't find jump dest instruction at .text+0x5d9
drivers/net/phy/intel-xway.o: warning: objtool: xway_gphy_led_polarity_set() falls through to next function xway_gphy_config_init()
drivers/net/phy/mxl-gpy.o: warning: objtool: gpy_led_polarity_set() falls through to next function gpy_led_hw_control_get()
There is no point to micro-optimize the behavior here to save a single-digit
number of bytes in the kernel, so just change this to a "return -EINVAL"
as we do when any unexpected bits are set.
Fixes: 1758af47b9 ("net: phy: intel-xway: add support for PHY LEDs")
Fixes: 9d55e68b19 ("net: phy: aquantia: correctly describe LED polarity override")
Fixes: eb89c79c1b ("net: phy: mxl-gpy: correctly describe LED polarity")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20241217081056.238792-1-arnd@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
With CONFIG_PROVE_LOCKING, when creating a set of type bitmap:ip, adding
it to a set of type list:set and populating it from iptables SET target
triggers a kernel warning:
| WARNING: possible recursive locking detected
| 6.12.0-rc7-01692-g5e9a28f41134-dirty #594 Not tainted
| --------------------------------------------
| ping/4018 is trying to acquire lock:
| ffff8881094a6848 (&set->lock){+.-.}-{2:2}, at: ip_set_add+0x28c/0x360 [ip_set]
|
| but task is already holding lock:
| ffff88811034c048 (&set->lock){+.-.}-{2:2}, at: ip_set_add+0x28c/0x360 [ip_set]
This is a false alarm: ipset does not allow nested list:set type, so the
loop in list_set_kadd() can never encounter the outer set itself. No
other set type supports embedded sets, so this is the only case to
consider.
To avoid the false report, create a distinct lock class for list:set
type ipset locks.
Fixes: f830837f0e ("netfilter: ipset: list:set set type support")
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
We noticed a high number of rx_discards_phy events on certain servers while
running `ethtool -S`. However, this critical counter is not currently
included in the standard /proc/net/dev statistics file, making it difficult
to monitor effectively—especially given the diversity of vendors across a
large fleet of servers.
Let's report it via the standard rx_dropped metric.
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Cc: Saeed Mahameed <saeedm@nvidia.com>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Gal Pressman <gal@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20241210022706.6665-1-laoar.shao@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The 'max_avail' value is calculated from the system memory
size using order_base_2().
order_base_2(x) is defined as '(x) ? fn(x) : 0'.
The compiler generates two copies of the code that follows
and then expands clamp(max, min, PAGE_SHIFT - 12) (11 on 32bit).
This triggers a compile-time assert since min is 5.
In reality a system would have to have less than 512MB memory
for the bounds passed to clamp to be reversed.
Swap the order of the arguments to clamp() to avoid the warning.
Replace the clamp_val() on the line below with clamp().
clamp_val() is just 'an accident waiting to happen' and not needed here.
Detected by compile time checks added to clamp(), specifically:
minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp()
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Closes: https://lore.kernel.org/all/CA+G9fYsT34UkGFKxus63H6UVpYi5GRZkezT9MRLfAbM3f6ke0g@mail.gmail.com/
Fixes: 4f325e2627 ("ipvs: dynamically limit the connection hash table")
Tested-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: David Laight <david.laight@aculab.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Merge tag 'for-6.13-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- tree-checker catches invalid number of inline extent references
- zoned mode fixes:
- enhance zone append IO command so it also detects emulated writes
- handle bio splitting at sectorsize boundary
- when deleting a snapshot, fix a condition for visiting nodes in reloc
trees
* tag 'for-6.13-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: tree-checker: reject inline extent items with 0 ref count
btrfs: split bios to the fs sector size boundary
btrfs: use bio_is_zone_append() in the completion handler
btrfs: fix improper generation check in snapshot delete
- prevent probe failure when non-critical ras unmasking fails
- fix CXL 1.1 link status sysfs attribute
- fix 4 way (and greater) switch interleave region creation
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Merge tag 'cxl-fixes-6.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull cxl fixes from Ira Weiny:
- prevent probe failure when non-critical RAS unmasking fails
- fix CXL 1.1 link status sysfs attribute
- fix 4 way (and greater) switch interleave region creation
* tag 'cxl-fixes-6.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
cxl/region: Fix region creation for greater than x2 switches
cxl/pci: Check dport->regs.rcd_pcie_cap availability before accessing
cxl/pci: Fix potential bogus return value upon successful probing
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Merge tag 'selinux-pr-20241217' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux fix from Paul Moore:
"One small SELinux patch to get rid improve our handling of unknown
extended permissions by safely ignoring them.
Not only does this make it easier to support newer SELinux policy
on older kernels in the future, it removes to BUG() calls from the
SELinux code."
* tag 'selinux-pr-20241217' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: ignore unknown extended permissions
Soham Chakradeo says:
====================
selftests/net: packetdrill: import multiple tests
Import tests for the following features (folder names in brackets):
ECN (ecn) : RFC 3168
Close (close) : RFC 9293
TCP_INFO (tcp_info) : RFC 9293
Fast recovery (fast_recovery) : RFC 5681
Timestamping (timestamping) : RFC 1323
Nagle (nagle) : RFC 896
Selective Acknowledgments (sack) : RFC 2018
Recent Timestamp (ts_recent) : RFC 1323
Send file (sendfile)
Syscall bad arg (syscall_bad_arg)
Validate (validate)
Blocking (blocking)
Splice (splice)
End of record (eor)
Limited transmit (limited_transmit)
Procedure to import and test the packetdrill tests into upstream linux
is explained in the first patch of this series
These tests have many authors. We only import them here from
github.com/google/packetdrill. Thanks to the following authors fo their
contributions over the years to these tests: Neal Cardwell, Shuo Chen,
Yuchung Cheng, Jerry Chu, Eric Dumazet, Luke Hsiao, Priyaranjan Jha,
Chonggang Li, Tanner Love, John Sperbeck, Wei Wang and Maciej
Żenczykowski. For more info see the original github commits, such as
https://github.com/google/packetdrill/commit/8229c94928ac.
====================
Link: https://patch.msgid.link/20241217185203.297935-1-sohamch.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Use the standard import and testing method, as described in the
import of tcp/ecn and tcp/close , tcp/sack , tcp/tcp_info.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Soham Chakradeo <sohamch@google.com>
Link: https://patch.msgid.link/20241217185203.297935-5-sohamch.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Use the standard import and testing method, as described in the
import of tcp/ecn and tcp/close , tcp/sack , tcp/tcp_info.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Soham Chakradeo <sohamch@google.com>
Link: https://patch.msgid.link/20241217185203.297935-4-sohamch.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Use the standard import and testing method, as described in the
import of tcp/ecn , tcp/close , tcp/sack , tcp/tcp_info.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Soham Chakradeo <sohamch@google.com>
Link: https://patch.msgid.link/20241217185203.297935-3-sohamch.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Same as initial tests, import verbatim from
github.com/google/packetdrill, aside from:
- update `source ./defaults.sh` path to adjust for flat dir
- add SPDX headers
- remove author statements if any
- drop blank lines at EOF
Same test process as previous tests. Both with and without debug mode.
Recording the steps once:
make mrproper
vng --build \
--config tools/testing/selftests/net/packetdrill/config \
--config kernel/configs/debug.config
vng -v --run . --user root --cpus 4 -- \
make -C tools/testing/selftests TARGETS=net/packetdrill run_tests
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Soham Chakradeo <sohamch@google.com>
Link: https://patch.msgid.link/20241217185203.297935-2-sohamch.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
- Replace trace_check_vprintf() with test_event_printk() and ignore_event()
The function test_event_printk() checks on boot up if the trace event
printf() formats dereference any pointers, and if they do, it then looks
at the arguments to make sure that the pointers they dereference will
exist in the event on the ring buffer. If they do not, it issues a
WARN_ON() as it is a likely bug.
But this isn't the case for the strings that can be dereferenced with
"%s", as some trace events (notably RCU and some IPI events) save
a pointer to a static string in the ring buffer. As the string it
points to lives as long as the kernel is running, it is not a bug
to reference it, as it is guaranteed to be there when the event is read.
But it is also possible (and a common bug) to point to some allocated
string that could be freed before the trace event is read and the
dereference is to bad memory. This case requires a run time check.
The previous way to handle this was with trace_check_vprintf() that would
process the printf format piece by piece and send what it didn't care
about to vsnprintf() to handle arguments that were not strings. This
kept it from having to reimplement vsnprintf(). But it relied on va_list
implementation and for architectures that copied the va_list and did
not pass it by reference, it wasn't even possible to do this check and
it would be skipped. As 64bit x86 passed va_list by reference, most
events were tested and this kept out bugs where strings would have been
dereferenced after being freed.
Instead of relying on the implementation of va_list, extend the boot up
test_event_printk() function to validate all the "%s" strings that
can be validated at boot, and for the few events that point to strings
outside the ring buffer, flag both the event and the field that is
dereferenced as "needs_test". Then before the event is printed, a call
to ignore_event() is made, and if the event has the flag set, it iterates
all its fields and for every field that is to be tested, it will read
the pointer directly from the event in the ring buffer and make sure
that it is valid. If the pointer is not valid, it will print a WARN_ON(),
print out to the trace that the event has unsafe memory and ignore
the print format.
With this new update, the trace_check_vprintf() can be safely removed
and now all events can be verified regardless of architecture.
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Merge tag 'trace-v6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:
"Replace trace_check_vprintf() with test_event_printk() and
ignore_event()
The function test_event_printk() checks on boot up if the trace event
printf() formats dereference any pointers, and if they do, it then
looks at the arguments to make sure that the pointers they dereference
will exist in the event on the ring buffer. If they do not, it issues
a WARN_ON() as it is a likely bug.
But this isn't the case for the strings that can be dereferenced with
"%s", as some trace events (notably RCU and some IPI events) save a
pointer to a static string in the ring buffer. As the string it points
to lives as long as the kernel is running, it is not a bug to
reference it, as it is guaranteed to be there when the event is read.
But it is also possible (and a common bug) to point to some allocated
string that could be freed before the trace event is read and the
dereference is to bad memory. This case requires a run time check.
The previous way to handle this was with trace_check_vprintf() that
would process the printf format piece by piece and send what it didn't
care about to vsnprintf() to handle arguments that were not strings.
This kept it from having to reimplement vsnprintf(). But it relied on
va_list implementation and for architectures that copied the va_list
and did not pass it by reference, it wasn't even possible to do this
check and it would be skipped. As 64bit x86 passed va_list by
reference, most events were tested and this kept out bugs where
strings would have been dereferenced after being freed.
Instead of relying on the implementation of va_list, extend the boot
up test_event_printk() function to validate all the "%s" strings that
can be validated at boot, and for the few events that point to strings
outside the ring buffer, flag both the event and the field that is
dereferenced as "needs_test". Then before the event is printed, a call
to ignore_event() is made, and if the event has the flag set, it
iterates all its fields and for every field that is to be tested, it
will read the pointer directly from the event in the ring buffer and
make sure that it is valid. If the pointer is not valid, it will print
a WARN_ON(), print out to the trace that the event has unsafe memory
and ignore the print format.
With this new update, the trace_check_vprintf() can be safely removed
and now all events can be verified regardless of architecture"
* tag 'trace-v6.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: Check "%s" dereference via the field and not the TP_printk format
tracing: Add "%s" check in test_event_printk()
tracing: Add missing helper functions in event pointer dereference check
tracing: Fix test_event_printk() to process entire print argument
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Merge tag 'hyperv-fixes-signed-20241217' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull hyperv fixes from Wei Liu:
- Various fixes to Hyper-V tools in the kernel tree (Dexuan Cui, Olaf
Hering, Vitaly Kuznetsov)
- Fix a bug in the Hyper-V TSC page based sched_clock() (Naman Jain)
- Two bug fixes in the Hyper-V utility functions (Michael Kelley)
- Convert open-coded timeouts to secs_to_jiffies() in Hyper-V drivers
(Easwar Hariharan)
* tag 'hyperv-fixes-signed-20241217' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
tools/hv: reduce resource usage in hv_kvp_daemon
tools/hv: add a .gitignore file
tools/hv: reduce resouce usage in hv_get_dns_info helper
hv/hv_kvp_daemon: Pass NIC name to hv_get_dns_info as well
Drivers: hv: util: Avoid accessing a ringbuffer not initialized yet
Drivers: hv: util: Don't force error code to ENODEV in util_probe()
tools/hv: terminate fcopy daemon if read from uio fails
drivers: hv: Convert open-coded timeouts to secs_to_jiffies()
tools: hv: change permissions of NetworkManager configuration file
x86/hyperv: Fix hv tsc page based sched_clock for hibernation
tools: hv: Fix a complier warning in the fcopy uio daemon
