Cross-merge networking fixes after downstream PR (net-6.18-rc5).
Conflicts:
drivers/net/wireless/ath/ath12k/mac.c
9222582ec5 ("Revert "wifi: ath12k: Fix missing station power save configuration"")
6917e268c4 ("wifi: ath12k: Defer vdev bring-up until CSA finalize to avoid stale beacon")
https://lore.kernel.org/11cece9f7e36c12efd732baa5718239b1bf8c950.camel@sipsolutions.net
Adjacent changes:
drivers/net/ethernet/intel/Kconfig
b1d16f7c00 ("libie: depend on DEBUG_FS when building LIBIE_FWLOG")
93f53db9f9 ("ice: switch to Page Pool")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Current release - new code bugs:
- ptp: expose raw cycles only for clocks with free-running counter
- bonding: fix null-deref in actor_port_prio setting
- mdio: ERR_PTR-check regmap pointer returned by device_node_to_regmap()
- eth: libie: depend on DEBUG_FS when building LIBIE_FWLOG
Previous releases - regressions:
- virtio_net: fix perf regression due to bad alignment of
virtio_net_hdr_v1_hash
- Revert "wifi: ath10k: avoid unnecessary wait for service ready message"
caused regressions for QCA988x and QCA9984
- Revert "wifi: ath12k: Fix missing station power save configuration"
caused regressions for WCN7850
- eth: bnxt_en: shutdown FW DMA in bnxt_shutdown(), fix memory
corruptions after kexec
Previous releases - always broken:
- virtio-net: fix received packet length check for big packets
- sctp: fix races in socket diag handling
- wifi: add an hrtimer-based delayed work item to avoid low granularity
of timers set relatively far in the future, and use it where it matters
(e.g. when performing AP-scheduled channel switch)
- eth: mlx5e:
- correctly propagate error in case of module EEPROM read failure
- fix HW-GRO on systems with PAGE_SIZE == 64kB
- dsa: b53: fixes for tagging, link configuration / RMII, FDB, multicast
- phy: lan8842: implement latest errata
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
Including fixes from bluetooth and wireless.
Current release - new code bugs:
- ptp: expose raw cycles only for clocks with free-running counter
- bonding: fix null-deref in actor_port_prio setting
- mdio: ERR_PTR-check regmap pointer returned by
device_node_to_regmap()
- eth: libie: depend on DEBUG_FS when building LIBIE_FWLOG
Previous releases - regressions:
- virtio_net: fix perf regression due to bad alignment of
virtio_net_hdr_v1_hash
- Revert "wifi: ath10k: avoid unnecessary wait for service ready
message" caused regressions for QCA988x and QCA9984
- Revert "wifi: ath12k: Fix missing station power save configuration"
caused regressions for WCN7850
- eth: bnxt_en: shutdown FW DMA in bnxt_shutdown(), fix memory
corruptions after kexec
Previous releases - always broken:
- virtio-net: fix received packet length check for big packets
- sctp: fix races in socket diag handling
- wifi: add an hrtimer-based delayed work item to avoid low
granularity of timers set relatively far in the future, and use it
where it matters (e.g. when performing AP-scheduled channel switch)
- eth: mlx5e:
- correctly propagate error in case of module EEPROM read failure
- fix HW-GRO on systems with PAGE_SIZE == 64kB
- dsa: b53: fixes for tagging, link configuration / RMII, FDB,
multicast
- phy: lan8842: implement latest errata"
* tag 'net-6.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (63 commits)
selftests/vsock: avoid false-positives when checking dmesg
net: bridge: fix MST static key usage
net: bridge: fix use-after-free due to MST port state bypass
lan966x: Fix sleeping in atomic context
bonding: fix NULL pointer dereference in actor_port_prio setting
net: dsa: microchip: Fix reserved multicast address table programming
net: wan: framer: pef2256: Switch to devm_mfd_add_devices()
net: libwx: fix device bus LAN ID
net/mlx5e: SHAMPO, Fix header formulas for higher MTUs and 64K pages
net/mlx5e: SHAMPO, Fix skb size check for 64K pages
net/mlx5e: SHAMPO, Fix header mapping for 64K pages
net: ti: icssg-prueth: Fix fdb hash size configuration
net/mlx5e: Fix return value in case of module EEPROM read error
net: gro_cells: Reduce lock scope in gro_cell_poll
libie: depend on DEBUG_FS when building LIBIE_FWLOG
wifi: mac80211_hwsim: Limit destroy_on_close radio removal to netgroup
netpoll: Fix deadlock in memory allocation under spinlock
net: ethernet: ti: netcp: Standardize knav_dma_open_channel to return NULL on error
virtio-net: fix received length check in big packets
bnxt_en: Fix warning in bnxt_dl_reload_down()
...
LIBIE_FWLOG is unusable without DEBUG_FS. Mark it in Kconfig.
Fix build error on ixgbe when DEBUG_FS is not set. To not add another
layer of #if IS_ENABLED(LIBIE_FWLOG) in ixgbe fwlog code define debugfs
dentry even when DEBUG_FS isn't enabled. In this case the dummy
functions of LIBIE_FWLOG will be used, so not initialized dentry isn't a
problem.
Fixes: 641585bc97 ("ixgbe: fwlog support for e610")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Closes: https://lore.kernel.org/lkml/f594c621-f9e1-49f2-af31-23fbcb176058@roeck-us.net/
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://patch.msgid.link/20251104172333.752445-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Revert struct sockaddr from flexible array to fixed 14-byte "sa_data",
to solve over 36,000 -Wflex-array-member-not-at-end warnings, since
struct sockaddr is embedded within many network structs.
With socket/proto sockaddr-based internal APIs switched to use struct
sockaddr_unsized, there should be no more uses of struct sockaddr that
depend on reading beyond the end of struct sockaddr::sa_data that might
trigger bounds checking.
Comparing an x86_64 "allyesconfig" vmlinux build before and after this
patch showed no new "ud1" instructions from CONFIG_UBSAN_BOUNDS nor any
new "field-spanning" memcpy CONFIG_FORTIFY_SOURCE instrumentations.
Cc: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Kees Cook <kees@kernel.org>
Link: https://patch.msgid.link/20251104002617.2752303-8-kees@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Change struct bpf_sock_addr_kern to use sockaddr_unsized for the "uaddr"
field instead of sockaddr. This improves type safety in the BPF cgroup
socket address filtering code.
The casting in __cgroup_bpf_run_filter_sock_addr() is updated to match the
new type, removing an unnecessary cast in the initialization and updating
the conditional assignment to use the appropriate sockaddr_unsized cast.
Additionally rename the "unspec" variable to "storage" to better align
with its usage.
No binary changes expected.
Signed-off-by: Kees Cook <kees@kernel.org>
Link: https://patch.msgid.link/20251104002617.2752303-7-kees@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Update BPF cgroup sockaddr filtering infrastructure to use sockaddr_unsized
consistently throughout the call chain, removing redundant explicit casts
from callers.
No binary changes expected.
Signed-off-by: Kees Cook <kees@kernel.org>
Link: https://patch.msgid.link/20251104002617.2752303-6-kees@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Update all struct proto_ops connect() callback function prototypes from
"struct sockaddr *" to "struct sockaddr_unsized *" to avoid lying to the
compiler about object sizes. Calls into struct proto handlers gain casts
that will be removed in the struct proto conversion patch.
No binary changes expected.
Signed-off-by: Kees Cook <kees@kernel.org>
Link: https://patch.msgid.link/20251104002617.2752303-3-kees@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Update all struct proto_ops bind() callback function prototypes from
"struct sockaddr *" to "struct sockaddr_unsized *" to avoid lying to the
compiler about object sizes. Calls into struct proto handlers gain casts
that will be removed in the struct proto conversion patch.
No binary changes expected.
Signed-off-by: Kees Cook <kees@kernel.org>
Link: https://patch.msgid.link/20251104002617.2752303-2-kees@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add flexible sockaddr structure to support addresses longer than the
traditional 14-byte struct sockaddr::sa_data limitation without
requiring the full 128-byte sa_data of struct sockaddr_storage. This
allows the network APIs to pass around a pointer to an object that
isn't lying to the compiler about how big it is, but must be accompanied
by its actual size as an additional parameter.
It's possible we may way to migrate to including the size with the
struct in the future, e.g.:
struct sockaddr_unsized {
u16 sa_data_len;
u16 sa_family;
u8 sa_data[] __counted_by(sa_data_len);
};
Signed-off-by: Kees Cook <kees@kernel.org>
Link: https://patch.msgid.link/20251104002617.2752303-1-kees@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
fixed_phy_add() has a number of problems/disadvantages:
- It uses phy address 0 w/o checking whether a fixed phy with this
address exists already.
- A subsequent call to fixed_phy_register() would also use phy address 0,
because fixed_phy_add() doesn't mark it as used.
- fixed_phy_add() is used from platform code, therefore requires that
fixed_phy code is built-in.
Now that for the only two users (coldfire/5272 and bcm47xx) fixed_phy
creation has been moved to the respective ethernet driver (fec, b44),
we can remove fixed_phy_add().
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://patch.msgid.link/bee046a1-1e77-4057-8b04-fdb2a1bbbd08@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In few places a 100FD fixed PHY is used. Create a helper so that users
don't have to define the struct fixed_phy_status.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://patch.msgid.link/bf564b19-e9bc-4896-aeae-9f721cc4fecd@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We can reduce the size of struct phy_device a little by switching
the type of members pause and asym_pause from int to a single bit.
As C99 is supported now, we can use type bool for the bitfield members,
what provides us with the benefit of the usual implicit bool conversions.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://patch.msgid.link/764e9a31-b40b-4dc9-b808-118192a16d87@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Changing alignment of header would mean it's no longer safe to cast a
2 byte aligned pointer between formats. Use two 16 bit fields to make
it 2 byte aligned as previously.
This fixes the performance regression since
commit ("virtio_net: enable gso over UDP tunnel support.") as it uses
virtio_net_hdr_v1_hash_tunnel which embeds
virtio_net_hdr_v1_hash. Pktgen in guest + XDP_DROP on TAP + vhost_net
shows the TX PPS is recovered from 2.4Mpps to 4.45Mpps.
Fixes: 56a06bd40f ("virtio_net: enable gso over UDP tunnel support.")
Cc: stable@vger.kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Link: https://patch.msgid.link/20251031060551.126-1-jasowang@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When dwmac is synthesised with support for multiple PHY interfaces, the
core provides phy_intf_sel inputs, sampled on reset, to configure the
PHY facing interface. Use stmmac_get_phy_intf_sel() in core code to
determine the dwmac phy_intf_sel input value, and provide a new
platform method called with this value just before we issue a soft
reset to the dwmac core.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1vFt4h-0000000Chos-3wxX@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add the base infrastructure for Mean Square Error (MSE) diagnostics,
as proposed by the OPEN Alliance "Advanced diagnostic features for
100BASE-T1 automotive Ethernet PHYs" [1] specification.
The OPEN Alliance spec defines only average MSE and average peak MSE
over a fixed number of symbols. However, other PHYs, such as the
KSZ9131, additionally expose a worst-peak MSE value latched since the
last channel capture. This API accounts for such vendor extensions by
adding a distinct capability bit and snapshot field.
Channel-to-pair mapping is normally straightforward, but in some cases
(e.g. 100BASE-TX with MDI-X resolution unknown) the mapping is ambiguous.
If hardware does not expose MDI-X status, the exact pair cannot be
determined. To avoid returning misleading per-channel data in this case,
a LINK selector is defined for aggregate MSE measurements.
All investigated devices differ in MSE capabilities, such
as sample rate, number of analyzed symbols, and scaling factors.
For example, the KSZ9131 uses different scaling for MSE and pMSE.
To make this visible to callers, scale limits and timing information
are returned via get_mse_capability().
Some PHYs sample very few symbols at high frequency (e.g. 2 us update
rate). To cover such cases and allow for future high-speed PHYs with
even shorter intervals, the refresh rate is reported as u64 in
picoseconds.
This patch introduces the internal PHY API for Mean Square Error
diagnostics. It defines new kernel-side data types and driver hooks:
- struct phy_mse_capability: describes supported metrics, scale
limits, update interval, and sampling length.
- struct phy_mse_snapshot: holds one correlated measurement set.
- New phy_driver ops: `get_mse_capability()` and `get_mse_snapshot()`.
These definitions form the core kernel API. No user-visible interfaces
are added in this commit.
Standardization notes:
OPEN Alliance defines presence and interpretation of some metrics but does
not fix numeric scales or sampling internals:
- SQI (3-bit, 0..7) is mandatory; correlation to SNR/BER is informative
(OA 100BASE-T1 TC1 v1.0 6.1.2; OA 1000BASE-T1 TC12 v2.2 6.1.2).
- MSE is optional; OA recommends 2^16 symbols and scaling to 0..511,
with a worst-case latch since last read (OA 100BASE-T1 TC1 v1.0 6.1.1; OA
1000BASE-T1 TC12 v2.2 6.1.1). Refresh is recommended (~0.8-2.0 ms for
100BASE-T1; ~80-200 us for 1000BASE-T1). Exact scaling/time windows
are vendor-specific.
- Peak MSE (pMSE) is defined only for 100BASE-T1 as optional, e.g.
128-symbol sliding window with 8-bit range and worst-case latch (OA
100BASE-T1 TC1 v1.0 6.1.3).
Therefore this API exposes which measures and selectors a PHY supports,
and documents where behavior is standard-referenced vs vendor-specific.
[1] <https://opensig.org/wp-content/uploads/2024/01/
Advanced_PHY_features_for_automotive_Ethernet_V1.0.pdf>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20251027122801.982364-2-o.rempel@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add a new state NAPI_STATE_THREADED_BUSY_POLL to the NAPI state enum to
enable and disable threaded busy polling.
When threaded busy polling is enabled for a NAPI, enable
NAPI_STATE_THREADED also.
When the threaded NAPI is scheduled, set NAPI_STATE_IN_BUSY_POLL to
signal napi_complete_done not to rearm interrupts.
Whenever NAPI_STATE_THREADED_BUSY_POLL is unset, the
NAPI_STATE_IN_BUSY_POLL will be unset, napi_complete_done unsets the
NAPI_STATE_SCHED_THREADED bit also, which in turn will make the kthread
go to sleep.
Signed-off-by: Samiullah Khawaja <skhawaja@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Acked-by: Martin Karsten <mkarsten@uwaterloo.ca>
Tested-by: Martin Karsten <mkarsten@uwaterloo.ca>
Link: https://patch.msgid.link/20251028203007.575686-2-skhawaja@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
One documentation fix and a fix for a problem with the slimbus regmap
which was uncovered by some changes in one of the drivers.
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Merge tag 'regmap-fix-v6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap fixes from Mark Brown:
"One documentation fix and a fix for a problem with the slimbus regmap
which was uncovered by some changes in one of the drivers"
* tag 'regmap-fix-v6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: irq: Correct documentation of wake_invert flag
regmap: slimbus: fix bus_context pointer in regmap init calls
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Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Pull bpf fixes from Alexei Starovoitov:
- Mark migrate_disable/enable() as always_inline to avoid issues with
partial inlining (Yonghong Song)
- Fix powerpc stack register definition in libbpf bpf_tracing.h (Andrii
Nakryiko)
- Reject negative head_room in __bpf_skb_change_head (Daniel Borkmann)
- Conditionally include dynptr copy kfuncs (Malin Jonsson)
- Sync pending IRQ work before freeing BPF ring buffer (Noorain Eqbal)
- Do not audit capability check in x86 do_jit() (Ondrej Mosnacek)
- Fix arm64 JIT of BPF_ST insn when it writes into arena memory
(Puranjay Mohan)
* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
bpf/arm64: Fix BPF_ST into arena memory
bpf: Make migrate_disable always inline to avoid partial inlining
bpf: Reject negative head_room in __bpf_skb_change_head
bpf: Conditionally include dynptr copy kfuncs
libbpf: Fix powerpc's stack register definition in bpf_tracing.h
bpf: Do not audit capability check in do_jit()
bpf: Sync pending IRQ work before freeing ring buffer
Phase-adjust values are currently limited by a min-max range. Some
hardware requires, for certain pin types, that values be multiples of
a specific granularity, as in the zl3073x driver.
Add a `phase-adjust-gran` pin attribute and an appropriate field in
dpll_pin_properties. If set by the driver, use its value to validate
user-provided phase-adjust values.
Reviewed-by: Michal Schmidt <mschmidt@redhat.com>
Reviewed-by: Petr Oros <poros@redhat.com>
Tested-by: Prathosh Satish <Prathosh.Satish@microchip.com>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Link: https://patch.msgid.link/20251029153207.178448-2-ivecera@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'block-6.18-20251031' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block fixes from Jens Axboe:
- Fix blk-crypto reporting EIO when EINVAL is the correct error code
- Two bug fixes for the block zone support
- NVME pull request via Keith:
- Target side authentication fixup
- Peer-to-peer metadata fixup
- null_blk DMA alignment fix
* tag 'block-6.18-20251031' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
null_blk: set dma alignment to logical block size
blk-crypto: use BLK_STS_INVAL for alignment errors
block: make REQ_OP_ZONE_OPEN a write operation
block: fix op_is_zone_mgmt() to handle REQ_OP_ZONE_RESET_ALL
nvme-pci: use blk_map_iter for p2p metadata
nvmet-auth: update sc_c in host response
The build fails with llvm 21/22:
$ make LLVM=1 -j
...
LD vmlinux.o
GEN .vmlinux.objs
...
BTF .tmp_vmlinux1.btf.o
...
AS .tmp_vmlinux2.kallsyms.o
LD vmlinux.unstripped
BTFIDS vmlinux.unstripped
WARN: resolve_btfids: unresolved symbol migrate_enable
WARN: resolve_btfids: unresolved symbol migrate_disable
make[2]: *** [vmlinux.unstripped] Error 255
make[2]: *** Deleting file 'vmlinux.unstripped'
make[1]: *** [Makefile:1242: vmlinux] Error 2
make: *** [Makefile:248: __sub-make] Error 2
Two functions with identical names but different addresses are
considered ambiguous and removed by "pahole" from vmlinux BTF.
Later resolve_btfids warns since it cannot find them.
Commit 378b770819 ("sched: Make migrate_{en,dis}able() inline") made
them inlineable in most places, but in vmlinux built with llvm 21 and 22
there are four symbols for migrate_{enable,disable}:
three static functions and one global function.
Fix the issue by marking migrate_{enable,disable} as always inline.
The alternative is to mark them as notrace/nokprobe which is more
drastic. Only bpf programs are prevented from attaching to these
functions. The rest of the tracing shouldn't be affected.
[note: Peter ok-ed the patch, Alexei rewrote commit log]
Fixes: 378b770819 ("sched: Make migrate_{en,dis}able() inline")
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Acked-by: Menglong Dong <menglong.dong@linux.dev>
Link: https://lore.kernel.org/r/20251029183646.3811774-1-yonghong.song@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Add an iterator for all PHY's on a MII bus, and phy_find_next()
as a prerequisite.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Wei Fang <wei.fang@nxp.com>
Link: https://patch.msgid.link/cd112f15-401a-43d9-8525-9ff0965a68cd@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add the ability to append the incoming IP interface information to
ICMPv4 error messages in accordance with RFC 5837 and RFC 4884. This is
required for more meaningful traceroute results in unnumbered networks.
The feature is disabled by default and controlled via a new sysctl
("net.ipv4.icmp_errors_extension_mask") which accepts a bitmask of ICMP
extensions to append to ICMP error messages. Currently, only a single
value is supported, but the interface and the implementation should be
able to support more extensions, if needed.
Clone the skb and copy the relevant data portions before modifying the
skb as the caller of __icmp_send() still owns the skb after the function
returns. This should be fine since by default ICMP error messages are
rate limited to 1000 per second and no more than 1 per second per
specific host.
Trim or pad the packet to 128 bytes before appending the ICMP extension
structure in order to be compatible with legacy applications that assume
that the ICMP extension structure always starts at this offset (the
minimum length specified by RFC 4884).
Reviewed-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20251027082232.232571-2-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
enqueue_to_backlog() is showing up in kernel profiles on hosts
with many cores, when RFS/RPS is used.
The following softnet_data fields need to be updated:
- input_queue_tail
- input_pkt_queue (next, prev, qlen, lock)
- backlog.state (if input_pkt_queue was empty)
Unfortunately they are currenly using two cache lines:
/* --- cacheline 3 boundary (192 bytes) --- */
call_single_data_t csd __attribute__((__aligned__(64))); /* 0xc0 0x20 */
struct softnet_data * rps_ipi_next; /* 0xe0 0x8 */
unsigned int cpu; /* 0xe8 0x4 */
unsigned int input_queue_tail; /* 0xec 0x4 */
struct sk_buff_head input_pkt_queue; /* 0xf0 0x18 */
/* --- cacheline 4 boundary (256 bytes) was 8 bytes ago --- */
struct napi_struct backlog __attribute__((__aligned__(8))); /* 0x108 0x1f0 */
Add one ____cacheline_aligned_in_smp to make sure they now are using
a single cache line.
Also, because napi_struct has written fields, make @state its first field.
We want to make sure that cpus adding packets to sd->input_pkt_queue
are not slowing down cpus processing their backlog because of
false sharing.
After this patch new layout is:
/* --- cacheline 5 boundary (320 bytes) --- */
long int pad[3] __attribute__((__aligned__(64))); /* 0x140 0x18 */
unsigned int input_queue_tail; /* 0x158 0x4 */
/* XXX 4 bytes hole, try to pack */
struct sk_buff_head input_pkt_queue; /* 0x160 0x18 */
struct napi_struct backlog __attribute__((__aligned__(8))); /* 0x178 0x1f0 */
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20251024091240.3292546-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Recently, we discovered the following issue through syzkaller:
BUG: KASAN: slab-use-after-free in fb_mode_is_equal+0x285/0x2f0
Read of size 4 at addr ff11000001b3c69c by task syz.xxx
...
Call Trace:
<TASK>
dump_stack_lvl+0xab/0xe0
print_address_description.constprop.0+0x2c/0x390
print_report+0xb9/0x280
kasan_report+0xb8/0xf0
fb_mode_is_equal+0x285/0x2f0
fbcon_mode_deleted+0x129/0x180
fb_set_var+0xe7f/0x11d0
do_fb_ioctl+0x6a0/0x750
fb_ioctl+0xe0/0x140
__x64_sys_ioctl+0x193/0x210
do_syscall_64+0x5f/0x9c0
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Based on experimentation and analysis, during framebuffer unregistration,
only the memory of fb_info->modelist is freed, without setting the
corresponding fb_display[i]->mode to NULL for the freed modes. This leads
to UAF issues during subsequent accesses. Here's an example of reproduction
steps:
1. With /dev/fb0 already registered in the system, load a kernel module
to register a new device /dev/fb1;
2. Set fb1's mode to the global fb_display[] array (via FBIOPUT_CON2FBMAP);
3. Switch console from fb to VGA (to allow normal rmmod of the ko);
4. Unload the kernel module, at this point fb1's modelist is freed, leaving
a wild pointer in fb_display[];
5. Trigger the bug via system calls through fb0 attempting to delete a mode
from fb0.
Add a check in do_unregister_framebuffer(): if the mode to be freed exists
in fb_display[], set the corresponding mode pointer to NULL.
Signed-off-by: Quanmin Yan <yanquanmin1@huawei.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org
regulator_unregister() already frees the associated GPIO device. On
ThinkPad X9 (Lunar Lake), this causes a double free issue that leads to
random failures when other drivers (typically Intel THC) attempt to
allocate interrupts. The root cause is that the reference count of the
pinctrl_intel_platform module unexpectedly drops to zero when this
driver defers its probe.
This behavior can also be reproduced by unloading the module directly.
Fix the issue by removing the redundant release of the GPIO device
during regulator unregistration.
Cc: stable@vger.kernel.org
Fixes: 1e5d088a52 ("platform/x86: int3472: Stop using devm_gpiod_get()")
Signed-off-by: Qiu Wenbo <qiuwenbo@kylinsec.com.cn>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Hans de Goede <hansg@kernel.org>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Link: https://patch.msgid.link/20251028063009.289414-1-qiuwenbo@gnome.org
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
A REQ_OP_OPEN_ZONE request changes the condition of a sequential zone of
a zoned block device to the explicitly open condition
(BLK_ZONE_COND_EXP_OPEN). As such, it should be considered a write
operation.
Change this operation code to be an odd number to reflect this. The
following operation numbers are changed to keep the numbering compact.
No problems were reported without this change as this operation has no
data. However, this unifies the zone operation to reflect that they
modify the device state and also allows strengthening checks in the
block layer, e.g. checking if this operation is not issued against a
read-only device.
Fixes: 6c1b1da58f ("block: add zone open, close and finish operations")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
REQ_OP_ZONE_RESET_ALL is a zone management request. Fix
op_is_zone_mgmt() to return true for that operation, like it already
does for REQ_OP_ZONE_RESET.
While no problems were reported without this fix, this change allows
strengthening checks in various block device drivers (scsi sd,
virtioblk, DM) where op_is_zone_mgmt() is used to verify that a zone
management command is not being issued to a regular block device.
Fixes: 6c1b1da58f ("block: add zone open, close and finish operations")
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Implement balance ID support for multiplane LAG configurations. This
feature enables per-multiplane group load balancing by extending the
software system image GUID with a balance ID component.
Key implementations:
- Enable lag_per_mp_group capability when supported by hardware.
- Append load_balance_id to software system image GUID when conditions
are met.
- Increase MLX5_SW_IMAGE_GUID_MAX_BYTES from 8 to 9 to accommodate the
extra byte.
The balance ID is appended to the system image GUID only when both
load_balance_id and lag_per_mp_group capabilities are available, ensuring
backward compatibility while enabling enhanced LAG functionality.
This enhancement allows for more granular load balancing control in complex
multi-plane LAG deployments, improving network performance and flexibility.
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Shay Drori <shayd@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1761211020-925651-6-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Replace direct hardware system image GUID usage with a new software
system image GUID function that supports variable-length identifiers.
Key changes:
- Add mlx5_query_nic_sw_system_image_guid() function with length parameter.
- Update all callsites to use the new function and buffer/length approach.
- Modify mapping contexts to use byte arrays instead of u64 keys.
- Update devcom matching to support variable-length keys.
- Change mlx5_same_hw_devs() to use buffer comparison instead of u64.
This refactoring prepares the infrastructure for balance ID support,
which requires extending the system image GUID with additional data.
The change maintains backward compatibility while enabling future
enhancements.
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Shay Drori <shayd@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1761211020-925651-3-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Some drivers, e.g. stmmac, use the speed_up()/speed_down() APIs to
gain additional power saving during Wake-on-LAN where the PHY is
managing the state.
Add support to phylink for this, which can be enabled by the MAC
driver. Only change the PHY speed if the PHY is configured for
wake-up, but without any wake-up on the MAC side, as MAC side
means changing the configuration once the negotiation has
completed.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1vBrR7-0000000BLza-2PjK@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add core phylink managed Wake-on-Lan support, which is enabled when the
MAC driver fills in the new .mac_wol_set() method that this commit
creates.
When this feature is disabled, phylink acts as it has in the past,
merely passing the ethtool WoL calls to phylib whenever a PHY exists.
No other new functionality provided by this commit is enabled.
When this feature is enabled, a more inteligent approach is used.
Phylink will first pass WoL options to the PHY, read them back, and
attempt to set any options that were not set at the PHY at the MAC.
Since we have PHY drivers that report they support WoL, and accept WoL
configuration even though they aren't wired up to be capable of waking
the system, we need a way to differentiate between PHYs that think
they support WoL and those which actually do. As PHY drivers do not
make use of the driver model's wake-up infrastructure, but could, we
use this to determine whether PHY drivers can participate. This gives
a path forward where, as MAC drivers are converted to this, it
encourages PHY drivers to also be converted.
Phylink will also ignore the mac_wol argument to phylink_suspend() as
it now knows the WoL state at the MAC.
MAC drivers are expected to record/configure the Wake-on-Lan state in
their .mac_set_wol() method, and deal appropriately with it in their
suspend/resume methods. The driver model provides assistance to set the
IRQ wake support which may assist driver authors in achieving the
necessary configuration.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1vBrR2-0000000BLzU-1xYL@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add phy_may_wakeup() which uses the driver model's device_may_wakeup()
when the PHY driver has marked the device as wakeup capable in the
driver model, otherwise use phy_drv_wol_enabled().
Replace the sites that used to call phy_drv_wol_enabled() with this
as checking the driver model will be more efficient than checking the
WoL state.
Export phy_may_wakeup() so that phylink can use it.
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1vBrQx-0000000BLzO-1RLt@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add phy_can_wakeup() to report whether the PHY driver has marked the
PHY device as being wake-up capable as far as the driver model is
concerned.
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1vBrQs-0000000BLzI-0w3U@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The main change this time is an update to the MAINTAINERS file,
listing Krzysztof Kozlowski, Alexandre Belloni, and Linus Walleij as
additional maintainers for the SoC tree, in order to go back to a group
maintainership. Drew Fustini joins as an additional reviewer for the
SoC tree.
Thanks to all of you for volunteering to help out.
On the actual bugfixes, we have a few correctness changes for firmware
drivers (qtee, arm-ffa, scmi) and two devicetree fixes for Raspberry Pi.
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Merge tag 'soc-fixes-6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC fixes from Arnd Bergmann:
"The main change this time is an update to the MAINTAINERS file,
listing Krzysztof Kozlowski, Alexandre Belloni, and Linus Walleij as
additional maintainers for the SoC tree, in order to go back to a
group maintainership. Drew Fustini joins as an additional reviewer for
the SoC tree.
Thanks to all of you for volunteering to help out.
On the actual bugfixes, we have a few correctness changes for firmware
drivers (qtee, arm-ffa, scmi) and two devicetree fixes for Raspberry
Pi"
* tag 'soc-fixes-6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
soc: officially expand maintainership team
firmware: arm_scmi: Fix premature SCMI_XFER_FLAG_IS_RAW clearing in raw mode
firmware: arm_scmi: Skip RAW initialization on failure
include: trace: Fix inflight count helper on failed initialization
firmware: arm_scmi: Account for failed debug initialization
ARM: dts: broadcom: rpi: Switch to V3D firmware clock
arm64: dts: broadcom: bcm2712: Define VGIC interrupt
firmware: arm_ffa: Add support for IMPDEF value in the memory access descriptor
tee: QCOMTEE should depend on ARCH_QCOM
tee: qcom: return -EFAULT instead of -EINVAL if copy_from_user() fails
tee: qcom: prevent potential off by one read
- fix regressions in regmap cache initialization in gpio-104-idio-16 and
gpio-pci-idio-16
- configure first 16 GPIO lines of the IDIO-16 as fixed outputs
- fix duplicated IRQ mapping that can lead to an RCU stall in gpio-ljca
- fix printf formatters passed to dev_err() and make failure to set
debounce period non fatal
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Merge tag 'gpio-fixes-for-v6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- fix regressions in regmap cache initialization in gpio-104-idio-16
and gpio-pci-idio-16
- configure first 16 GPIO lines of the IDIO-16 as fixed outputs
- fix duplicated IRQ mapping that can lead to an RCU stall in gpio-ljca
- fix printf formatters passed to dev_err() and make failure to set
debounce period non fatal
* tag 'gpio-fixes-for-v6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: ljca: Fix duplicated IRQ mapping
gpiolib: acpi: Use %pe when passing an error pointer to dev_err()
gpiolib: acpi: Make set debounce errors non fatal
gpio: idio-16: Define fixed direction of the GPIO lines
gpio: regmap: add the .fixed_direction_output configuration parameter
gpio: pci-idio-16: Define maximum valid register address offset
gpio: 104-idio-16: Define maximum valid register address offset
really started testing.
Current release - new code bugs:
- eth: mlx5e:
- psp: avoid 'accel' NULL pointer dereference
- skip PPHCR register query for FEC histogram if not supported
Previous releases - regressions:
- bonding: update the slave array for broadcast mode
- rtnetlink: re-allow deleting FDB entries in user namespace
- eth: dpaa2: fix the pointer passed to PTR_ALIGN on Tx path
Previous releases - always broken:
- can: drop skb on xmit if device is in listen-only mode
- gro: clear skb_shinfo(skb)->hwtstamps in napi_reuse_skb()
- eth: mlx5e
- RX, fix generating skb from non-linear xdp_buff if program
trims frags
- make devcom init failures non-fatal, fix races with IPSec
Misc:
- some documentation formatting "fixes"
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from can. Slim pickings, I'm guessing people haven't
really started testing.
Current release - new code bugs:
- eth: mlx5e:
- psp: avoid 'accel' NULL pointer dereference
- skip PPHCR register query for FEC histogram if not supported
Previous releases - regressions:
- bonding: update the slave array for broadcast mode
- rtnetlink: re-allow deleting FDB entries in user namespace
- eth: dpaa2: fix the pointer passed to PTR_ALIGN on Tx path
Previous releases - always broken:
- can: drop skb on xmit if device is in listen-only mode
- gro: clear skb_shinfo(skb)->hwtstamps in napi_reuse_skb()
- eth: mlx5e
- RX, fix generating skb from non-linear xdp_buff if program
trims frags
- make devcom init failures non-fatal, fix races with IPSec
Misc:
- some documentation formatting 'fixes'"
* tag 'net-6.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (47 commits)
net/mlx5: Fix IPsec cleanup over MPV device
net/mlx5: Refactor devcom to return NULL on failure
net/mlx5e: Skip PPHCR register query if not supported by the device
net/mlx5: Add PPHCR to PCAM supported registers mask
virtio-net: zero unused hash fields
net: phy: micrel: always set shared->phydev for LAN8814
vsock: fix lock inversion in vsock_assign_transport()
ovpn: use datagram_poll_queue for socket readiness in TCP
espintcp: use datagram_poll_queue for socket readiness
net: datagram: introduce datagram_poll_queue for custom receive queues
net: bonding: fix possible peer notify event loss or dup issue
net: hsr: prevent creation of HSR device with slaves from another netns
sctp: avoid NULL dereference when chunk data buffer is missing
ptp: ocp: Fix typo using index 1 instead of i in SMA initialization loop
net: ravb: Ensure memory write completes before ringing TX doorbell
net: ravb: Enforce descriptor type ordering
net: hibmcge: select FIXED_PHY
net: dlink: use dev_kfree_skb_any instead of dev_kfree_skb
Documentation: networking: ax25: update the mailing list info.
net: gro_cells: fix lock imbalance in gro_cells_receive()
...
