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If we're redirecting the skb, and haven't called tcf_mirred_forward(),
yet, we need to tell the core to drop the skb by setting the retcode
to SHOT. If we have called tcf_mirred_forward(), however, the skb
is out of our hands and returning SHOT will lead to UaF.
Move the retval override to the error path which actually need it.
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Fixes: e5cf1baf92cb ("act_mirred: use TC_ACT_REINSERT when possible")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The test Davide added in commit ca22da2fbd69 ("act_mirred: use the backlog
for nested calls to mirred ingress") hangs our testing VMs every 10 or so
runs, with the familiar tcp_v4_rcv -> tcp_v4_rcv deadlock reported by
lockdep.
The problem as previously described by Davide (see Link) is that
if we reverse flow of traffic with the redirect (egress -> ingress)
we may reach the same socket which generated the packet. And we may
still be holding its socket lock. The common solution to such deadlocks
is to put the packet in the Rx backlog, rather than run the Rx path
inline. Do that for all egress -> ingress reversals, not just once
we started to nest mirred calls.
In the past there was a concern that the backlog indirection will
lead to loss of error reporting / less accurate stats. But the current
workaround does not seem to address the issue.
Fixes: 53592b364001 ("net/sched: act_mirred: Implement ingress actions")
Cc: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Suggested-by: Davide Caratti <dcaratti@redhat.com>
Link: https://lore.kernel.org/netdev/33dc43f587ec1388ba456b4915c75f02a8aae226.1663945716.git.dcaratti@redhat.com/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This driver uses functions that are supplied by the Kconfig symbol
PHYLIB, so select it to ensure that they are built as needed.
When CONFIG_ADIN1110=y and CONFIG_PHYLIB=m, there are multiple build
(linker) errors that are resolved by this Kconfig change:
ld: drivers/net/ethernet/adi/adin1110.o: in function `adin1110_net_open':
drivers/net/ethernet/adi/adin1110.c:933: undefined reference to `phy_start'
ld: drivers/net/ethernet/adi/adin1110.o: in function `adin1110_probe_netdevs':
drivers/net/ethernet/adi/adin1110.c:1603: undefined reference to `get_phy_device'
ld: drivers/net/ethernet/adi/adin1110.c:1609: undefined reference to `phy_connect'
ld: drivers/net/ethernet/adi/adin1110.o: in function `adin1110_disconnect_phy':
drivers/net/ethernet/adi/adin1110.c:1226: undefined reference to `phy_disconnect'
ld: drivers/net/ethernet/adi/adin1110.o: in function `devm_mdiobus_alloc':
include/linux/phy.h:455: undefined reference to `devm_mdiobus_alloc_size'
ld: drivers/net/ethernet/adi/adin1110.o: in function `adin1110_register_mdiobus':
drivers/net/ethernet/adi/adin1110.c:529: undefined reference to `__devm_mdiobus_register'
ld: drivers/net/ethernet/adi/adin1110.o: in function `adin1110_net_stop':
drivers/net/ethernet/adi/adin1110.c:958: undefined reference to `phy_stop'
ld: drivers/net/ethernet/adi/adin1110.o: in function `adin1110_disconnect_phy':
drivers/net/ethernet/adi/adin1110.c:1226: undefined reference to `phy_disconnect'
ld: drivers/net/ethernet/adi/adin1110.o: in function `adin1110_adjust_link':
drivers/net/ethernet/adi/adin1110.c:1077: undefined reference to `phy_print_status'
ld: drivers/net/ethernet/adi/adin1110.o: in function `adin1110_ioctl':
drivers/net/ethernet/adi/adin1110.c:790: undefined reference to `phy_do_ioctl'
ld: drivers/net/ethernet/adi/adin1110.o:(.rodata+0xf60): undefined reference to `phy_ethtool_get_link_ksettings'
ld: drivers/net/ethernet/adi/adin1110.o:(.rodata+0xf68): undefined reference to `phy_ethtool_set_link_ksettings'
Fixes: bc93e19d088b ("net: ethernet: adi: Add ADIN1110 support")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202402070626.eZsfVHG5-lkp@intel.com/
Cc: Lennart Franzen <lennart@lfdomain.com>
Cc: Alexandru Tachici <alexandru.tachici@analog.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: netdev@vger.kernel.org
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tobias Waldekranz says:
====================
net: bridge: switchdev: Ensure MDB events are delivered exactly once
When a device is attached to a bridge, drivers will request a replay
of objects that were created before the device joined the bridge, that
are still of interest to the joining port. Typical examples include
FDB entries and MDB memberships on other ports ("foreign interfaces")
or on the bridge itself.
Conversely when a device is detached, the bridge will synthesize
deletion events for all those objects that are still live, but no
longer applicable to the device in question.
This series eliminates two races related to the synching and
unsynching phases of a bridge's MDB with a joining or leaving device,
that would cause notifications of such objects to be either delivered
twice (1/2), or not at all (2/2).
A similar race to the one solved by 1/2 still remains for the
FDB. This is much harder to solve, due to the lockless operation of
the FDB's rhashtable, and is therefore knowingly left out of this
series.
v1 -> v2:
- Squash the previously separate addition of
switchdev_port_obj_act_is_deferred into first consumer.
- Use ether_addr_equal to compare MAC addresses.
- Document switchdev_port_obj_act_is_deferred (renamed from
switchdev_port_obj_is_deferred in v1, to indicate that we also match
on the action).
- Delay allocations of MDB objects until we know they're needed.
- Use non-RCU version of the hash list iterator, now that the MDB is
not scanned while holding the RCU read lock.
- Add Fixes tag to commit message
v2 -> v3:
- Fix unlocking in error paths
- Access RCU protected port list via mlock_dereference, since MDB is
guaranteed to remain constant for the duration of the scan.
v3 -> v4:
- Limit the search for exiting deferred events in 1/2 to only apply to
additions, since the problem does not exist in the deletion case.
- Add 2/2, to plug a related race when unoffloading an indirectly
associated device.
v4 -> v5:
- Fix grammatical errors in kerneldoc of
switchdev_port_obj_act_is_deferred
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
When unoffloading a device, it is important to ensure that all
relevant deferred events are delivered to it before it disassociates
itself from the bridge.
Before this change, this was true for the normal case when a device
maps 1:1 to a net_bridge_port, i.e.
br0
/
swp0
When swp0 leaves br0, the call to switchdev_deferred_process() in
del_nbp() makes sure to process any outstanding events while the
device is still associated with the bridge.
In the case when the association is indirect though, i.e. when the
device is attached to the bridge via an intermediate device, like a
LAG...
br0
/
lag0
/
swp0
...then detaching swp0 from lag0 does not cause any net_bridge_port to
be deleted, so there was no guarantee that all events had been
processed before the device disassociated itself from the bridge.
Fix this by always synchronously processing all deferred events before
signaling completion of unoffloading back to the driver.
Fixes: 4e51bf44a03a ("net: bridge: move the switchdev object replay helpers to "push" mode")
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Before this change, generation of the list of MDB events to replay
would race against the creation of new group memberships, either from
the IGMP/MLD snooping logic or from user configuration.
While new memberships are immediately visible to walkers of
br->mdb_list, the notification of their existence to switchdev event
subscribers is deferred until a later point in time. So if a replay
list was generated during a time that overlapped with such a window,
it would also contain a replay of the not-yet-delivered event.
The driver would thus receive two copies of what the bridge internally
considered to be one single event. On destruction of the bridge, only
a single membership deletion event was therefore sent. As a
consequence of this, drivers which reference count memberships (at
least DSA), would be left with orphan groups in their hardware
database when the bridge was destroyed.
This is only an issue when replaying additions. While deletion events
may still be pending on the deferred queue, they will already have
been removed from br->mdb_list, so no duplicates can be generated in
that scenario.
To a user this meant that old group memberships, from a bridge in
which a port was previously attached, could be reanimated (in
hardware) when the port joined a new bridge, without the new bridge's
knowledge.
For example, on an mv88e6xxx system, create a snooping bridge and
immediately add a port to it:
root@infix-06-0b-00:~$ ip link add dev br0 up type bridge mcast_snooping 1 && \
> ip link set dev x3 up master br0
And then destroy the bridge:
root@infix-06-0b-00:~$ ip link del dev br0
root@infix-06-0b-00:~$ mvls atu
ADDRESS FID STATE Q F 0 1 2 3 4 5 6 7 8 9 a
DEV:0 Marvell 88E6393X
33:33:00:00:00:6a 1 static - - 0 . . . . . . . . . .
33:33:ff:87:e4:3f 1 static - - 0 . . . . . . . . . .
ff:ff:ff:ff:ff:ff 1 static - - 0 1 2 3 4 5 6 7 8 9 a
root@infix-06-0b-00:~$
The two IPv6 groups remain in the hardware database because the
port (x3) is notified of the host's membership twice: once via the
original event and once via a replay. Since only a single delete
notification is sent, the count remains at 1 when the bridge is
destroyed.
Then add the same port (or another port belonging to the same hardware
domain) to a new bridge, this time with snooping disabled:
root@infix-06-0b-00:~$ ip link add dev br1 up type bridge mcast_snooping 0 && \
> ip link set dev x3 up master br1
All multicast, including the two IPv6 groups from br0, should now be
flooded, according to the policy of br1. But instead the old
memberships are still active in the hardware database, causing the
switch to only forward traffic to those groups towards the CPU (port
0).
Eliminate the race in two steps:
1. Grab the write-side lock of the MDB while generating the replay
list.
This prevents new memberships from showing up while we are generating
the replay list. But it leaves the scenario in which a deferred event
was already generated, but not delivered, before we grabbed the
lock. Therefore:
2. Make sure that no deferred version of a replay event is already
enqueued to the switchdev deferred queue, before adding it to the
replay list, when replaying additions.
Fixes: 4f2673b3a2b6 ("net: bridge: add helper to replay port and host-joined mdb entries")
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
iucv_path_table is a dynamically allocated array of pointers to
struct iucv_path items. Yet, its size is calculated as if it was
an array of struct iucv_path items.
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Current release - regressions:
- af_unix: fix task hung while purging oob_skb in GC
- pds_core: do not try to run health-thread in VF path
Current release - new code bugs:
- sched: act_mirred: don't zero blockid when net device is being deleted
Previous releases - regressions:
- netfilter:
- nat: restore default DNAT behavior
- nf_tables: fix bidirectional offload, broken when unidirectional
offload support was added
- openvswitch: limit the number of recursions from action sets
- eth: i40e: do not allow untrusted VF to remove administratively
set MAC address
Previous releases - always broken:
- tls: fix races and bugs in use of async crypto
- mptcp: prevent data races on some of the main socket fields,
fix races in fastopen handling
- dpll: fix possible deadlock during netlink dump operation
- dsa: lan966x: fix crash when adding interface under a lag
when some of the ports are disabled
- can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock
Misc:
- handful of fixes and reliability improvements for selftests
- fix sysfs documentation missing net/ in paths
- finish the work of squashing the missing MODULE_DESCRIPTION()
warnings in networking
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from can, wireless and netfilter.
Current release - regressions:
- af_unix: fix task hung while purging oob_skb in GC
- pds_core: do not try to run health-thread in VF path
Current release - new code bugs:
- sched: act_mirred: don't zero blockid when net device is being
deleted
Previous releases - regressions:
- netfilter:
- nat: restore default DNAT behavior
- nf_tables: fix bidirectional offload, broken when unidirectional
offload support was added
- openvswitch: limit the number of recursions from action sets
- eth: i40e: do not allow untrusted VF to remove administratively set
MAC address
Previous releases - always broken:
- tls: fix races and bugs in use of async crypto
- mptcp: prevent data races on some of the main socket fields, fix
races in fastopen handling
- dpll: fix possible deadlock during netlink dump operation
- dsa: lan966x: fix crash when adding interface under a lag when some
of the ports are disabled
- can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock
Misc:
- a handful of fixes and reliability improvements for selftests
- fix sysfs documentation missing net/ in paths
- finish the work of squashing the missing MODULE_DESCRIPTION()
warnings in networking"
* tag 'net-6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (92 commits)
net: fill in MODULE_DESCRIPTION()s for missing arcnet
net: fill in MODULE_DESCRIPTION()s for mdio_devres
net: fill in MODULE_DESCRIPTION()s for ppp
net: fill in MODULE_DESCRIPTION()s for fddik/skfp
net: fill in MODULE_DESCRIPTION()s for plip
net: fill in MODULE_DESCRIPTION()s for ieee802154/fakelb
net: fill in MODULE_DESCRIPTION()s for xen-netback
net: ravb: Count packets instead of descriptors in GbEth RX path
pppoe: Fix memory leak in pppoe_sendmsg()
net: sctp: fix skb leak in sctp_inq_free()
net: bcmasp: Handle RX buffer allocation failure
net-timestamp: make sk_tskey more predictable in error path
selftests: tls: increase the wait in poll_partial_rec_async
ice: Add check for lport extraction to LAG init
netfilter: nf_tables: fix bidirectional offload regression
netfilter: nat: restore default DNAT behavior
netfilter: nft_set_pipapo: fix missing : in kdoc
igc: Remove temporary workaround
igb: Fix string truncation warnings in igb_set_fw_version
can: netlink: Fix TDCO calculation using the old data bittiming
...
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Merge tag 'for-linus-6.8a-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
"Fixes and simple cleanups:
- use a proper flexible array instead of a one-element array in order
to avoid array-bounds sanitizer errors
- add NULL pointer checks after allocating memory
- use memdup_array_user() instead of open-coding it
- fix a rare race condition in Xen event channel allocation code
- make struct bus_type instances const
- make kerneldoc inline comments match reality"
* tag 'for-linus-6.8a-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/events: close evtchn after mapping cleanup
xen/gntalloc: Replace UAPI 1-element array
xen: balloon: make balloon_subsys const
xen: pcpu: make xen_pcpu_subsys const
xen/privcmd: Use memdup_array_user() in alloc_ioreq()
x86/xen: Add some null pointer checking to smp.c
xen/xenbus: document will_handle argument for xenbus_watch_path()
In commit 4356e9f841f7 ("work around gcc bugs with 'asm goto' with
outputs") I did the gcc workaround unconditionally, because the cause of
the bad code generation wasn't entirely clear.
In the meantime, Jakub Jelinek debugged the issue, and has come up with
a fix in gcc [2], which also got backported to the still maintained
branches of gcc-11, gcc-12 and gcc-13.
Note that while the fix technically wasn't in the original gcc-14
branch, Jakub says:
"while it is true that no GCC 14 snapshots until today (or whenever the
fix will be committed) have the fix, for GCC trunk it is up to the
distros to use the latest snapshot if they use it at all and would
allow better testing of the kernel code without the workaround, so
that if there are other issues they won't be discovered years later.
Most userland code doesn't actually use asm goto with outputs..."
so we will consider gcc-14 to be fixed - if somebody is using gcc
snapshots of the gcc-14 before the fix, they should upgrade.
Note that while the bug goes back to gcc-11, in practice other gcc
changes seem to have effectively hidden it since gcc-12.1 as per a
bisect by Jakub. So even a gcc-14 snapshot without the fix likely
doesn't show actual problems.
Also, make the default 'asm_goto_output()' macro mark the asm as
volatile by hand, because of an unrelated gcc issue [1] where it doesn't
match the documented behavior ("asm goto is always volatile").
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103979 [1]
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113921 [2]
Link: https://lore.kernel.org/all/20240208220604.140859-1-seanjc@google.com/
Requested-by: Jakub Jelinek <jakub@redhat.com>
Cc: Uros Bizjak <ubizjak@gmail.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Andrew Pinski <quic_apinski@quicinc.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Improve devlink dependency parsing for DT graphs
- Fix devlink handling of io-channels dependencies
- Fix PCI addressing in marvell,prestera example
- A few schema fixes for property constraints
- Improve performance of DT unprobed devices kselftest
- Fix regression in DT_SCHEMA_FILES handling
- Fix compile error in unittest for !OF_DYNAMIC
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Merge tag 'devicetree-fixes-for-6.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:
- Improve devlink dependency parsing for DT graphs
- Fix devlink handling of io-channels dependencies
- Fix PCI addressing in marvell,prestera example
- A few schema fixes for property constraints
- Improve performance of DT unprobed devices kselftest
- Fix regression in DT_SCHEMA_FILES handling
- Fix compile error in unittest for !OF_DYNAMIC
* tag 'devicetree-fixes-for-6.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
dt-bindings: ufs: samsung,exynos-ufs: Add size constraints on "samsung,sysreg"
of: property: Add in-ports/out-ports support to of_graph_get_port_parent()
of: property: Improve finding the supplier of a remote-endpoint property
of: property: Improve finding the consumer of a remote-endpoint property
net: marvell,prestera: Fix example PCI bus addressing
of: unittest: Fix compile in the non-dynamic case
of: property: fix typo in io-channels
dt-bindings: tpm: Drop type from "resets"
dt-bindings: display: nxp,tda998x: Fix 'audio-ports' constraints
dt-bindings: xilinx: replace Piyush Mehta maintainership
kselftest: dt: Stop relying on dirname to improve performance
dt-bindings: don't anchor DT_SCHEMA_FILES to bindings directory
A smallish collection of fixes for SPI, all driver specific, plus one
device ID addition for a new Intel part. The ppc4xx isn't routinely
covered by most of the automated testing so there were some errors that
were missed in some of the recent API conversions, otherwise there's
nothing super remarkable here.
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Merge tag 'spi-fix-v6.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A smallish collection of fixes for SPI, all driver specific, plus one
device ID addition for a new Intel part.
The ppc4xx isn't routinely covered by most of the automated testing so
there were some errors that were missed in some of the recent API
conversions, otherwise there's nothing super remarkable here"
* tag 'spi-fix-v6.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi-mxs: Fix chipselect glitch
spi: intel-pci: Add support for Lunar Lake-M SPI serial flash
spi: omap2-mcspi: Revert FIFO support without DMA
spi: ppc4xx: Drop write-only variable
spi: ppc4xx: Fix fallout from rename in struct spi_bitbang
spi: ppc4xx: Fix fallout from include cleanup
spi: spi-ppc4xx: include missing platform_device.h
spi: imx: fix the burst length at DMA mode and CPU mode
Guenter runs a lot of KUnit tests so noticed that there were a couple of
the regmap tests, including the newly added noinc test, which could show
spurious failures due to the use of randomly generated test values.
These changes handle the randomly generated data properly.
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Merge tag 'regmap-fix-v6.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap test fixes from Mark Brown:
"Guenter runs a lot of KUnit tests so noticed that there were a couple
of the regmap tests, including the newly added noinc test, which could
show spurious failures due to the use of randomly generated test
values. These changes handle the randomly generated data properly"
* tag 'regmap-fix-v6.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: kunit: Ensure that changed bytes are actually different
regmap: kunit: fix raw noinc write test wrapping
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2024-02-06 (igb, igc)
This series contains updates to igb and igc drivers.
Kunwu Chan adjusts firmware version string implementation to resolve
possible NULL pointer issue for igb.
Sasha removes workaround on igc.
* '1GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
igc: Remove temporary workaround
igb: Fix string truncation warnings in igb_set_fw_version
====================
Link: https://lore.kernel.org/r/20240214180347.3219650-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Breno Leitao says:
====================
Fix MODULE_DESCRIPTION() for net (p6)
There are a few network modules left that misses MODULE_DESCRIPTION(),
causing a warnning when compiling with W=1. Example:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/net/arcnet/....
This last patchset solves the problem for all the missing driver. It is
not expect to see any warning for the driver/net and net/ directory once
all these patches have landed.
v1: https://lore.kernel.org/all/20240213112122.404045-1-leitao@debian.org/
====================
Link: https://lore.kernel.org/r/20240214152741.670178-1-leitao@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
W=1 builds now warn if module is built without a MODULE_DESCRIPTION().
Add descriptions to the ARC modules.
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://lore.kernel.org/r/20240214152741.670178-8-leitao@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
W=1 builds now warn if module is built without a MODULE_DESCRIPTION().
Add descriptions to the PHY MDIO helpers.
Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20240214152741.670178-7-leitao@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
W=1 builds now warn if module is built without a MODULE_DESCRIPTION().
Add descriptions to the PPP modules.
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://lore.kernel.org/r/20240214152741.670178-6-leitao@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
W=1 builds now warn if module is built without a MODULE_DESCRIPTION().
Add descriptions to the SysKonnect FDDI PCI module.
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://lore.kernel.org/r/20240214152741.670178-5-leitao@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
W=1 builds now warn if module is built without a MODULE_DESCRIPTION().
Add descriptions to the PLIP (parallel port) network module
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://lore.kernel.org/r/20240214152741.670178-4-leitao@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
W=1 builds now warn if module is built without a MODULE_DESCRIPTION().
Add descriptions to the IEEE 802.15.4 loopback driver.
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://lore.kernel.org/r/20240214152741.670178-3-leitao@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
W=1 builds now warn if module is built without a MODULE_DESCRIPTION().
Add descriptions to the Xen backend network module.
Signed-off-by: Breno Leitao <leitao@debian.org>
Acked-by: Paul Durrant <paul@xen.org>
Link: https://lore.kernel.org/r/20240214152741.670178-2-leitao@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The units of "work done" in the RX path should be packets instead of
descriptors, as large packets can be spread over multiple descriptors.
Fixes: 1c59eb678cbd ("ravb: Fillup ravb_rx_gbeth() stub")
Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Link: https://lore.kernel.org/r/20240214151204.2976-1-paul.barker.ct@bp.renesas.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
syzbot reports a memory leak in pppoe_sendmsg [1].
The problem is in the pppoe_recvmsg() function that handles errors
in the wrong order. For the skb_recv_datagram() function, check
the pointer to skb for NULL first, and then check the 'error' variable,
because the skb_recv_datagram() function can set 'error'
to -EAGAIN in a loop but return a correct pointer to socket buffer
after a number of attempts, though 'error' remains set to -EAGAIN.
skb_recv_datagram
__skb_recv_datagram // Loop. if (err == -EAGAIN) then
// go to the next loop iteration
__skb_try_recv_datagram // if (skb != NULL) then return 'skb'
// else if a signal is received then
// return -EAGAIN
Found by InfoTeCS on behalf of Linux Verification Center
(linuxtesting.org) with Syzkaller.
Link: https://syzkaller.appspot.com/bug?extid=6bdfd184eac7709e5cc9 [1]
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: syzbot+6bdfd184eac7709e5cc9@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=6bdfd184eac7709e5cc9
Signed-off-by: Gavrilov Ilia <Ilia.Gavrilov@infotecs.ru>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Link: https://lore.kernel.org/r/20240214085814.3894917-1-Ilia.Gavrilov@infotecs.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In case of GSO, 'chunk->skb' pointer may point to an entry from
fraglist created in 'sctp_packet_gso_append()'. To avoid freeing
random fraglist entry (and so undefined behavior and/or memory
leak), introduce 'sctp_inq_chunk_free()' helper to ensure that
'chunk->skb' is set to 'chunk->head_skb' (i.e. fraglist head)
before calling 'sctp_chunk_free()', and use the aforementioned
helper in 'sctp_inq_pop()' as well.
Reported-by: syzbot+8bb053b5d63595ab47db@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?id=0d8351bbe54fd04a492c2daab0164138db008042
Fixes: 90017accff61 ("sctp: Add GSO support")
Suggested-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Acked-by: Xin Long <lucien.xin@gmail.com>
Link: https://lore.kernel.org/r/20240214082224.10168-1-dmantipov@yandex.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The buffer_pg variable needs to hold an order-5 allocation (32 x
PAGE_SIZE) which, under memory pressure may fail to be allocated. Deal
with that error condition properly to avoid doing a NULL pointer
de-reference in the subsequent call to dma_map_page().
In addition, the err_reclaim_tx error label in bcmasp_netif_init() needs
to ensure that the TX NAPI object is properly deleted, otherwise
unregister_netdev() will spin forever attempting to test and clear
the NAPI_STATE_HASHED bit.
Fixes: 490cb412007d ("net: bcmasp: Add support for ASP2.0 Ethernet controller")
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Justin Chen <justin.chen@broadcom.com>
Link: https://lore.kernel.org/r/20240213173339.3438713-1-florian.fainelli@broadcom.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'nf-24-02-15' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following batch contains Netfilter fixes for net:
1) Missing : in kdoc field in nft_set_pipapo.
2) Restore default DNAT behavior When a DNAT rule is configured via
iptables with different port ranges, from Kyle Swenson.
3) Restore flowtable hardware offload for bidirectional flows
by setting NF_FLOW_HW_BIDIRECTIONAL flag, from Felix Fietkau.
netfilter pull request 24-02-15
* tag 'nf-24-02-15' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
netfilter: nf_tables: fix bidirectional offload regression
netfilter: nat: restore default DNAT behavior
netfilter: nft_set_pipapo: fix missing : in kdoc
====================
Link: https://lore.kernel.org/r/20240214233818.7946-1-pablo@netfilter.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'linux-can-fixes-for-6.8-20240214' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
Marc Kleine-Budde says:
====================
pull-request: can 2024-02-14
this is a pull request of 3 patches for net/master.
the first patch is by Ziqi Zhao and targets the CAN J1939 protocol, it
fixes a potential deadlock by replacing the spinlock by an rwlock.
Oleksij Rempel's patch adds a missing spin_lock_bh() to prevent a
potential Use-After-Free in the CAN J1939's
setsockopt(SO_J1939_FILTER).
Maxime Jayat contributes a patch to fix the transceiver delay
compensation (TDCO) calculation, which is needed for higher CAN-FD bit
rates (usually 2Mbit/s).
* tag 'linux-can-fixes-for-6.8-20240214' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can:
can: netlink: Fix TDCO calculation using the old data bittiming
can: j1939: Fix UAF in j1939_sk_match_filter during setsockopt(SO_J1939_FILTER)
can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock
====================
Link: https://lore.kernel.org/r/20240214140348.2412776-1-mkl@pengutronix.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
When SOF_TIMESTAMPING_OPT_ID is used to ambiguate timestamped datagrams,
the sk_tskey can become unpredictable in case of any error happened
during sendmsg(). Move increment later in the code and make decrement of
sk_tskey in error path. This solution is still racy in case of multiple
threads doing snedmsg() over the very same socket in parallel, but still
makes error path much more predictable.
Fixes: 09c2d251b707 ("net-timestamp: add key to disambiguate concurrent datagrams")
Reported-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Vadim Fedorenko <vadfed@meta.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20240213110428.1681540-1-vadfed@meta.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Test runners on debug kernels occasionally fail with:
# # RUN tls_err.13_aes_gcm.poll_partial_rec_async ...
# # tls.c:1883:poll_partial_rec_async:Expected poll(&pfd, 1, 5) (0) == 1 (1)
# # tls.c:1870:poll_partial_rec_async:Expected status (256) == 0 (0)
# # poll_partial_rec_async: Test failed at step #17
# # FAIL tls_err.13_aes_gcm.poll_partial_rec_async
# not ok 699 tls_err.13_aes_gcm.poll_partial_rec_async
# # FAILED: 698 / 699 tests passed.
This points to the second poll() in the test which is expected
to wait for the sender to send the rest of the data.
Apparently under some conditions that doesn't happen within 5ms,
bump the timeout to 20ms.
Fixes: 23fcb62bc19c ("selftests: tls: add tests for poll behavior")
Link: https://lore.kernel.org/r/20240213142055.395564-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
To fully support initializing the LAG support code, a DDP package that
extracts the logical port from the metadata is required. If such a
package is not present, there could be difficulties in supporting some
bond types.
Add a check into the initialization flow that will bypass the new paths
if any of the support pieces are missing.
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Fixes: df006dd4b1dc ("ice: Add initial support framework for LAG")
Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Reviewed-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://lore.kernel.org/r/20240213183957.1483857-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
that's how we love it ;-)
iwlwifi:
- correct A3 in A-MSDUs
- fix crash when operating as AP and running out of station
slots to use
- clear link ID to correct some later checks against it
- fix error codes in SAR table loading
- fix error path in PPAG table read
mac80211:
- reload a pointer after SKB may have changed
(only in certain monitor inject mode scenarios)
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Merge tag 'wireless-2024-02-14' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless
Johannes Berg says:
====================
Valentine's day edition, with just few fixes because
that's how we love it ;-)
iwlwifi:
- correct A3 in A-MSDUs
- fix crash when operating as AP and running out of station
slots to use
- clear link ID to correct some later checks against it
- fix error codes in SAR table loading
- fix error path in PPAG table read
mac80211:
- reload a pointer after SKB may have changed
(only in certain monitor inject mode scenarios)
* tag 'wireless-2024-02-14' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless:
wifi: iwlwifi: mvm: fix a crash when we run out of stations
wifi: iwlwifi: uninitialized variable in iwl_acpi_get_ppag_table()
wifi: iwlwifi: Fix some error codes
wifi: iwlwifi: clear link_id in time_event
wifi: iwlwifi: mvm: use correct address 3 in A-MSDU
wifi: mac80211: reload info pointer in ieee80211_tx_dequeue()
====================
Link: https://lore.kernel.org/r/20240214184326.132813-3-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'landlock-6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux
Pull landlock test fixes from Mickaël Salaün:
"Fix build issues for tests, and improve test compatibility"
* tag 'landlock-6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux:
selftests/landlock: Fix capability for net_test
selftests/landlock: Fix fs_test build with old libc
selftests/landlock: Fix net_test build with old libc
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Merge tag 'for-6.8-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"A few regular fixes and one fix for space reservation regression since
6.7 that users have been reporting:
- fix over-reservation of metadata chunks due to not keeping proper
balance between global block reserve and delayed refs reserve; in
practice this leaves behind empty metadata block groups, the
workaround is to reclaim them by using the '-musage=1' balance
filter
- other space reservation fixes:
- do not delete unused block group if it may be used soon
- do not reserve space for checksums for NOCOW files
- fix extent map assertion failure when writing out free space inode
- reject encoded write if inode has nodatasum flag set
- fix chunk map leak when loading block group zone info"
* tag 'for-6.8-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: don't refill whole delayed refs block reserve when starting transaction
btrfs: zoned: fix chunk map leak when loading block group zone info
btrfs: reject encoded write if inode has nodatasum flag set
btrfs: don't reserve space for checksums when writing to nocow files
btrfs: add new unused block groups to the list of unused block groups
btrfs: do not delete unused block group if it may be used soon
btrfs: add and use helper to check if block group is used
btrfs: don't drop extent_map for free space inode on write error
This KUnit update for Linux 6.8-rc5 consists of one important fix
to unregister kunit_bus when KUnit module is unloaded. Not doing
so causes an error when KUnit module tries to re-register the bus
when it gets reloaded.
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Merge tag 'linux_kselftest-kunit-fixes-6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull KUnit fix from Shuah Khan:
"One important fix to unregister kunit_bus when KUnit module is
unloaded.
Not doing so causes an error when KUnit module tries to re-register
the bus when it gets reloaded"
* tag 'linux_kselftest-kunit-fixes-6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: device: Unregister the kunit_bus on shutdown
Commit 8f84780b84d6 ("netfilter: flowtable: allow unidirectional rules")
made unidirectional flow offload possible, while completely ignoring (and
breaking) bidirectional flow offload for nftables.
Add the missing flag that was left out as an exercise for the reader :)
Cc: Vlad Buslov <vladbu@nvidia.com>
Fixes: 8f84780b84d6 ("netfilter: flowtable: allow unidirectional rules")
Reported-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
When a DNAT rule is configured via iptables with different port ranges,
iptables -t nat -A PREROUTING -p tcp -d 10.0.0.2 -m tcp --dport 32000:32010
-j DNAT --to-destination 192.168.0.10:21000-21010
we seem to be DNATing to some random port on the LAN side. While this is
expected if --random is passed to the iptables command, it is not
expected without passing --random. The expected behavior (and the
observed behavior prior to the commit in the "Fixes" tag) is the traffic
will be DNAT'd to 192.168.0.10:21000 unless there is a tuple collision
with that destination. In that case, we expect the traffic to be
instead DNAT'd to 192.168.0.10:21001, so on so forth until the end of
the range.
This patch intends to restore the behavior observed prior to the "Fixes"
tag.
Fixes: 6ed5943f8735 ("netfilter: nat: remove l4 protocol port rovers")
Signed-off-by: Kyle Swenson <kyle.swenson@est.tech>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Add missing : in kdoc field names.
Fixes: 8683f4b9950d ("nft_set_pipapo: Prepare for vectorised implementation: helpers")
Reported-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
PHY_CONTROL register works as defined in the IEEE 802.3 specification
(IEEE 802.3-2008 22.2.4.1). Tidy up the temporary workaround.
User impact: PHY can now be powered down when the ethernet link is down.
Testing hints: ip link set down <device> (or just disconnect the
ethernet cable).
Oldest tested NVM version is: 1045:740.
Fixes: 5586838fe9ce ("igc: Add code for PHY support")
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Commit 1978d3ead82c ("intel: fix string truncation warnings")
fixes '-Wformat-truncation=' warnings in igb_main.c by using kasprintf.
drivers/net/ethernet/intel/igb/igb_main.c:3092:53: warning：‘%d’ directive output may be truncated writing between 1 and 5 bytes into a region of size between 1 and 13 [-Wformat-truncation=]
3092 | "%d.%d, 0x%08x, %d.%d.%d",
| ^~
drivers/net/ethernet/intel/igb/igb_main.c:3092:34: note：directive argument in the range [0, 65535]
3092 | "%d.%d, 0x%08x, %d.%d.%d",
| ^~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/intel/igb/igb_main.c:3092:34: note：directive argument in the range [0, 65535]
drivers/net/ethernet/intel/igb/igb_main.c:3090:25: note：‘snprintf’ output between 23 and 43 bytes into a destination of size 32
kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure.
Fix this warning by using a larger space for adapter->fw_version,
and then fall back and continue to use snprintf.
Fixes: 1978d3ead82c ("intel: fix string truncation warnings")
Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Cc: Kunwu Chan <kunwu.chan@hotmail.com>
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
The TDCO calculation was done using the currently applied data bittiming,
instead of the newly computed data bittiming, which means that the TDCO
had an invalid value unless setting the same data bittiming twice.
Fixes: d99755f71a80 ("can: netlink: add interface for CAN-FD Transmitter Delay Compensation (TDC)")
Signed-off-by: Maxime Jayat <maxime.jayat@mobile-devices.fr>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/40579c18-63c0-43a4-8d4c-f3a6c1c0b417@munic.io
Cc: stable@vger.kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
The following 3 locks would race against each other, causing the
deadlock situation in the Syzbot bug report:
- j1939_socks_lock
- active_session_list_lock
- sk_session_queue_lock
A reasonable fix is to change j1939_socks_lock to an rwlock, since in
the rare situations where a write lock is required for the linked list
that j1939_socks_lock is protecting, the code does not attempt to
acquire any more locks. This would break the circular lock dependency,
where, for example, the current thread already locks j1939_socks_lock
and attempts to acquire sk_session_queue_lock, and at the same time,
another thread attempts to acquire j1939_socks_lock while holding
sk_session_queue_lock.
NOTE: This patch along does not fix the unregister_netdevice bug
reported by Syzbot; instead, it solves a deadlock situation to prepare
for one or more further patches to actually fix the Syzbot bug, which
appears to be a reference counting problem within the j1939 codebase.
Reported-by: <syzbot+1591462f226d9cbf0564@syzkaller.appspotmail.com>
Signed-off-by: Ziqi Zhao <astrajoan@yahoo.com>
Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/all/20230721162226.8639-1-astrajoan@yahoo.com
[mkl: remove unrelated newline change]
Cc: stable@vger.kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
clang-16 warns about the mismatched prototypes for the devm_* callbacks:
drivers/net/ethernet/ti/cpts.c:691:12: error: cast from 'void (*)(struct clk_hw *)' to 'void (*)(void *)' converts to incompatible function type [-Werror,-Wcast-function-type-strict]
691 | (void(*)(void *))clk_hw_unregister_mux,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/device.h:406:34: note: expanded from macro 'devm_add_action_or_reset'
406 | __devm_add_action_or_reset(dev, action, data, #action)
| ^~~~~~
drivers/net/ethernet/ti/cpts.c:703:12: error: cast from 'void (*)(struct device_node *)' to 'void (*)(void *)' converts to incompatible function type [-Werror,-Wcast-function-type-strict]
703 | (void(*)(void *))of_clk_del_provider,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/device.h:406:34: note: expanded from macro 'devm_add_action_or_reset'
406 | __devm_add_action_or_reset(dev, action, data, #action)
Use separate helper functions for this instead, using the expected prototypes
with a void* argument.
Fixes: a3047a81ba13 ("net: ethernet: ti: cpts: add support for ext rftclk selection")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
clang-16 warns about a function pointer cast:
drivers/net/ethernet/brocade/bna/bnad.c:1995:4: error: cast from 'void (*)(struct delayed_work *)' to 'work_func_t' (aka 'void (*)(struct work_struct *)') converts to incompatible function type [-Werror,-Wcast-function-type-strict]
1995 | (work_func_t)bnad_tx_cleanup);
drivers/net/ethernet/brocade/bna/bnad.c:2252:4: error: cast from 'void (*)(void *)' to 'work_func_t' (aka 'void (*)(struct work_struct *)') converts to incompatible function type [-Werror,-Wcast-function-type-strict]
2252 | (work_func_t)(bnad_rx_cleanup));
The problem here is mixing up work_struct and delayed_work, which relies
the former being the first member of the latter.
Change the code to use consistent types here to address the warning and
make it more robust against workqueue interface changes.
Side note: the use of a delayed workqueue for cleaning up TX descriptors
is probably a bad idea since this introduces a noticeable delay. The
driver currently does not appear to use BQL, but if one wanted to add
that, this would have to be changed as well.
Fixes: 01b54b145185 ("bna: tx rx cleanup fix")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 67f562e3e147 ("net/smc: transfer fasync_list in case of fallback")
leaves the socket's fasync list pointer within a container socket as well.
When the latter is destroyed, '__sock_release()' warns about its non-empty
fasync list, which is a dangling pointer to previously freed fasync list
of an underlying TCP socket. Fix this spurious warning by nullifying
fasync list of a container socket.
Fixes: 67f562e3e147 ("net/smc: transfer fasync_list in case of fallback")
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2024-02-12 (i40e)
This series contains updates to i40e driver only.
Ivan Vecera corrects the looping value used while waiting for queues to
be disabled as well as an incorrect mask being used for DCB
configuration.
Maciej resolves an issue related to XDP traffic; removing a double call to
i40e_pf_rxq_wait() and accounting for XDP rings when stopping rings.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
