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Pull drm fixes from Dave Airlie:
"Seems like a pretty regular rc3, i915 and amdgpu with the usual
selection of fixes, then a scattering of fixes across misc drivers and
other areas:
accel:
- build fix for accel
edid:
- fix info leak in edid
ttm:
- fix NULL ptr deref
- reference counting fix
i915:
- Fix hwmon PL1 power limit enabling
- Fix audio ELD handling for DP MST
- Fix PSR io and wake line calculations
- Fix DG2 HDMI modes with 267.30 and 319.89 MHz pixel clocks
- Fix SSEU subslice out-of-bounds access
- Fix misuse of non-idle barriers as fence trackers
amdgpu:
- SMU 13 update
- RDNA2 suspend/resume fix when overclocking is enabled
- SRIOV VCN fixes
- HDCP suspend/resume fix
- Fix drm polling splat regression
- Fix dirty rectangle tracking for PSR
- Fix vangogh regression on certain BIOSes
- Misc display fixes
- Suspend/resume IOMMU regression fix
amdkfd:
- Fix BO offset for multi-VMA page migration
- Fix a possible double free
- Fix potential use after free
- Fix process cleanup on module exit
bridge:
- fix returned array size name documentation
fbdev:
- ref-counting fix for fbdev deferred I/O
virtio:
- dma sync fix
shmem-helper:
- error path fix
msm:
- shrinker blocking fix
panfrost:
- shrinker rpm fix
chipsfb:
- fix error code
meson:
- fix 1px pink line
- fix regulator interaction
sun4i:
- fix missing component unbind"
* tag 'drm-fixes-2023-03-17' of git://anongit.freedesktop.org/drm/drm: (38 commits)
drm/ttm: drop extra ttm_bo_put in ttm_bo_cleanup_refs
drm/amdgpu: Don't resume IOMMU after incomplete init
drm/amdkfd: Fixed kfd_process cleanup on module exit.
drm/amd/display: disconnect MPCC only on OTG change
drm/amd/display: Fix DP MST sinks removal issue
drm/amd/display: Do not set DRR on pipe Commit
drm/amd/display: Remove OTG DIV register write for Virtual signals.
drm/meson: dw-hdmi: Fix devm_regulator_*get_enable*() conversion again
drm/bridge: Fix returned array size name for atomic_get_input_bus_fmts kdoc
drm/amdgpu/vcn: Disable indirect SRAM on Vangogh broken BIOSes
drm/amdgpu/nv: fix codec array for SR_IOV
drm/amd/display: Write to correct dirty_rect
drm/amdgpu: move poll enabled/disable into non DC path
drm/amd/display: Fix HDCP failing to enable after suspend
drm/amdkfd: fix potential kgd_mem UAFs
drm/amdgpu/vcn: custom video info caps for sriov
drm/amd/pm: Fix sienna cichlid incorrect OD volage after resume
drm/amd/pm: bump SMU 13.0.4 driver_if header version
drm/amdkfd: fix a potential double free in pqm_create_queue
drm/amdkfd: Get prange->offset after svm_range_vram_node_new
...
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Ten patches, eight in drivers and two in the core, which correct a
regression from directory removal and add a no VPD size quirk also to
fix a regression. All pretty small"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ufs: mcq: Use active_reqs to check busy in clock scaling
scsi: core: Fix a procfs host directory removal regression
scsi: core: Add BLIST_NO_VPD_SIZE for some VDASD
scsi: mpi3mr: Fix expander node leak in mpi3mr_remove()
scsi: mpi3mr: Fix memory leaks in mpi3mr_init_ioc()
scsi: mpi3mr: Fix sas_hba.phy memory leak in mpi3mr_remove()
scsi: mpi3mr: Fix mpi3mr_hba_port memory leak in mpi3mr_remove()
scsi: mpi3mr: Fix config page DMA memory leak
scsi: mpi3mr: Fix throttle_groups memory leak
scsi: mpt3sas: Fix NULL pointer access in mpt3sas_transport_port_add()
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Merge a PSCI cpuidle driver fix for 6.3-rc1:
- Fix the psci_pd_init_topology() failure path in the PSCI cpuidle
driver (Shawn Guo).
* pm-cpuidle:
cpuidle: psci: Iterate backwards over list in psci_pd_remove()
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Merge a new ACPI backlight quirk, new ACPI quirks for I2C device
enumeration on some platforms, a pfrut utility fix and an ACPI
documentation fix for 6.3-rc3:
- Add backlight=native DMI quirk for Dell Vostro 15 3535 to the ACPI
video driver (Chia-Lin Kao).
- Add ACPI quirks for I2C devices enumeration on Lenovo Yoga Book X90
and Acer Iconia One 7 B1-750 (Hans de Goede).
- Fix handling of invalid command line option values in the ACPI pfrut
utility (Chen Yu).
- Fix references to I2C device data type in the ACPI documentation for
device enumeration (Andy Shevchenko).
* acpi-video:
ACPI: video: Add backlight=native DMI quirk for Dell Vostro 15 3535
* acpi-x86:
ACPI: x86: Add skip i2c clients quirk for Lenovo Yoga Book X90
ACPI: x86: Add skip i2c clients quirk for Acer Iconia One 7 B1-750
ACPI: x86: Introduce an acpi_quirk_skip_gpio_event_handlers() helper
* acpi-tools:
ACPI: tools: pfrut: Check if the input of level and type is in the right numeric range
* acpi-docs:
ACPI: docs: enumeration: Correct reference to the I²C device data type
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Happy St. Patrick's Day!
Signed-off-by: Len Brown <len.brown@intel.com>
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The "excursion to minimum" information is in bit2
in HWP_STATUS MSR. Fix the bitmask used for
decoding the register.
Signed-off-by: Antti Laakso <antti.laakso@intel.com>
Reviewed-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Introduce support for EMR.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Tested-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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warn(3) terminates strings with newlines
Signed-off-by: Len Brown <len.brown@intel.com>
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When running as non-root the following error is seen in turbostat:
turbostat: fopen /dev/cpu_dma_latency
: Permission denied
turbostat and the man page have information on how to avoid other
permission errors, so these can be fixed the same way.
Provide better /dev/cpu_dma_latency warnings that provide instructions on
how to avoid the error, and update the man page.
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Cc: linux-pm@vger.kernel.org
Signed-off-by: Len Brown <len.brown@intel.com>
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accesses
turbostat reports some capabilities access errors and not others. Provide
the same debug message for all errors.
[lenb: remove extra quotes]
Cc: David Arcari <darcari@redhat.com>
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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cosmetic only (but useful if you copy/paste)
Signed-off-by: Len Brown <len.brown@intel.com>
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The refcount wr_tx_refcnt may cause cache thrashing problems among
cores and we can use percpu ref to mitigate this issue here. We
gain some performance improvement with percpu ref here on our
customized smc-r verion. Applying cache alignment may also mitigate
this problem but it seem more reasonable to use percpu ref here.
We can also replace wr_reg_refcnt with one percpu reference like
wr_tx_refcnt.
redis-benchmark on smc-r with atomic wr_tx_refcnt:
SET: 525707.06 requests per second, p50=0.087 msec
GET: 554877.38 requests per second, p50=0.087 msec
redis-benchmark on the percpu_ref version:
SET: 540482.06 requests per second, p50=0.087 msec
GET: 570711.12 requests per second, p50=0.079 msec
Cases are like "redis-benchmark -h x.x.x.x -q -t set,get -P 1 -n
5000000 -c 50 -d 10 --threads 4".
Signed-off-by: Kai Shen <KaiShen@linux.alibaba.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Eric Dumazet says:
====================
inet: better const qualifier awareness
inet_sk() can be changed to propagate const qualifier,
thanks to container_of_const()
Following patches in this series add more const qualifiers.
Other helpers like tcp_sk(), udp_sk(), raw_sk(), ... will be handled
in following series.
====================
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Now both raw_v4_match() and raw_v6_match() accept a const socket,
raw_lookup() can do the same to clarify its role.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This clarifies raw_v4_match() intent.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This clarifies raw_v6_match() intent.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This clarifies __udp_v6_is_mcast_sock() intent.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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inet6_mc_check() is essentially a read-only function.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This clarifies __udp_is_mcast_sock() intent.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This clarifies ip_mc_sf_allow() intent.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We can change inet_sk() to propagate const qualifier of its argument.
This should avoid some potential errors caused by accidental
(const -> not_const) promotion.
Other helpers like tcp_sk(), udp_sk(), raw_sk() will be handled
in separate patch series.
v2: use container_of_const() as advised by Jakub and Linus
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/netdev/20230315142841.3a2ac99a@kernel.org/
Link: https://lore.kernel.org/netdev/CAHk-=wiOf12nrYEF2vJMcucKjWPN-Ns_SW9fA7LwST_2Dzp7rw@mail.gmail.com/
Signed-off-by: David S. Miller <davem@davemloft.net>
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Chuck wanted to put the UAPI header in linux/net/ which seems
reasonable, allow genetlink families to choose the location.
It doesn't really matter for non-C-like languages.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Devlink is quite complex but put in the very basics so we can
incrementally fill in the commands as needed.
$ ./tools/net/ynl/cli.py --spec Documentation/netlink/specs/devlink.yaml \
--dump get
[{'bus-name': 'netdevsim',
'dev-name': 'netdevsim1',
'dev-stats': {'reload-stats': {'reload-action-info': {'reload-action': 1,
'reload-action-stats': {'reload-stats-entry': [{'reload-stats-limit': 0,
'reload-stats-value': 0}]}}},
'remote-reload-stats': {'reload-action-info': {'reload-action': 2,
'reload-action-stats': {'reload-stats-entry': [{'reload-stats-limit': 0,
'reload-stats-value': 0},
{'reload-stats-limit': 1,
'reload-stats-value': 0}]}}}},
'reload-failed': 0}]
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Eric Dumazet says:
====================
net/packet: KCSAN awareness
This series is based on one syzbot report [1]
Seven 'flags/booleans' are converted to atomic bit variant.
po->xmit and po->tp_tstamp accesses get annotations.
[1]
BUG: KCSAN: data-race in packet_rcv / packet_setsockopt
read-write to 0xffff88813dbe84e4 of 1 bytes by task 12312 on cpu 0:
packet_setsockopt+0xb77/0xe60 net/packet/af_packet.c:3900
__sys_setsockopt+0x212/0x2b0 net/socket.c:2252
__do_sys_setsockopt net/socket.c:2263 [inline]
__se_sys_setsockopt net/socket.c:2260 [inline]
__x64_sys_setsockopt+0x62/0x70 net/socket.c:2260
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
read to 0xffff88813dbe84e4 of 1 bytes by task 1911 on cpu 1:
packet_rcv+0x4b1/0xa40 net/packet/af_packet.c:2187
deliver_skb net/core/dev.c:2189 [inline]
dev_queue_xmit_nit+0x3a9/0x620 net/core/dev.c:2259
xmit_one+0x71/0x2a0 net/core/dev.c:3586
dev_hard_start_xmit+0x72/0x120 net/core/dev.c:3606
__dev_queue_xmit+0x91c/0x11c0 net/core/dev.c:4256
dev_queue_xmit include/linux/netdevice.h:3008 [inline]
neigh_hh_output include/net/neighbour.h:530 [inline]
neigh_output include/net/neighbour.h:544 [inline]
ip6_finish_output2+0x9e9/0xc30 net/ipv6/ip6_output.c:134
__ip6_finish_output net/ipv6/ip6_output.c:195 [inline]
ip6_finish_output+0x395/0x4f0 net/ipv6/ip6_output.c:206
NF_HOOK_COND include/linux/netfilter.h:291 [inline]
ip6_output+0x10e/0x210 net/ipv6/ip6_output.c:227
dst_output include/net/dst.h:445 [inline]
ip6_local_out+0x60/0x80 net/ipv6/output_core.c:161
ip6tunnel_xmit include/net/ip6_tunnel.h:161 [inline]
udp_tunnel6_xmit_skb+0x321/0x4a0 net/ipv6/ip6_udp_tunnel.c:109
send6+0x2ed/0x3b0 drivers/net/wireguard/socket.c:152
wg_socket_send_skb_to_peer+0xbb/0x120 drivers/net/wireguard/socket.c:178
wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline]
wg_packet_tx_worker+0x142/0x360 drivers/net/wireguard/send.c:276
process_one_work+0x3d3/0x720 kernel/workqueue.c:2289
worker_thread+0x618/0xa70 kernel/workqueue.c:2436
kthread+0x1a9/0x1e0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
====================
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Not only this removes some READ_ONCE()/WRITE_ONCE(),
this also removes one integer.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Instead of consuming 32 bits for po->running, use
one available bit in po->flags.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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po->has_vnet_hdr can be read locklessly.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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tp_loss can be read locklessly.
Convert it to an atomic flag to avoid races.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This is to use existing space in po->flags, and reclaim
the storage used by the non atomic bit fields.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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tp_tstamp is read locklessly.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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po->auxdata can be read while another thread
is changing its value, potentially raising KCSAN splat.
Convert it to PACKET_SOCK_AUXDATA flag.
Fixes: 8dc419447415 ("[PACKET]: Add optional checksum computation for recvmsg")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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syzbot/KCAN reported that po->origdev can be read
while another thread is changing its value.
We can avoid this splat by converting this field
to an actual bit.
Following patches will convert remaining 1bit fields.
Fixes: 80feaacb8a64 ("[AF_PACKET]: Add option to return orig_dev to userspace.")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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po->xmit can be set from setsockopt(PACKET_QDISC_BYPASS),
while read locklessly.
Use READ_ONCE()/WRITE_ONCE() to avoid potential load/store
tearing issues.
Fixes: d346a3fae3ff ("packet: introduce PACKET_QDISC_BYPASS socket option")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Praveen Kaligineedi says:
====================
gve: Add XDP support for GQI-QPL format
Adding support for XDP DROP, PASS, TX, REDIRECT for GQI QPL format.
Add AF_XDP zero-copy support.
When an XDP program is installed, dedicated TX queues are created to
handle XDP traffic. The user needs to ensure that the number of
configured TX queues is equal to the number of configured RX queues; and
the number of TX/RX queues is less than or equal to half the maximum
number of TX/RX queues.
The XDP traffic from AF_XDP sockets and from other NICs (arriving via
XDP_REDIRECT) will also egress through the dedicated XDP TX queues.
Although these changes support AF_XDP socket in zero-copy mode, there is
still a copy happening within the driver between XSK buffer pool and QPL
bounce buffers in GQI-QPL format.
The following example demonstrates how the XDP packets are mapped to
TX queues:
Example configuration:
Max RX queues : 2N, Max TX queues : 2N
Configured RX queues : N, Configured TX queues : N
TX queue mapping:
TX queues with queue id 0,...,N-1 will handle traffic from the stack.
TX queues with queue id N,...,2N-1 will handle XDP traffic.
For the XDP packets transmitted using XDP_TX action:
<Egress TX queue id> = N + <Ingress RX queue id>
For the XDP packets that arrive from other NICs via XDP_REDIRECT action:
<Egress TX queue id> = N + ( smp_processor_id % N )
For AF_XDP zero-copy mode:
<Egress TX queue id> = N + <AF_XDP TX queue id>
Changes in v2:
- Removed gve_close/gve_open when adding XDP dedicated queues. Instead
we add and register additional TX queues when the XDP program is
installed. If the allocation/registration fails we return error and do
not install the XDP program. Added a new patch to enable adding TX queues
without gve_close/gve_open
- Removed xdp tx spin lock from this patch. It is needed for XDP_REDIRECT
support as both XDP_REDIRECT and XDP_TX traffic share the dedicated XDP
queues. Moved the code to add xdp tx spinlock to the subsequent patch
that adds XDP_REDIRECT support.
- Added netdev_err when the user tries to set rx/tx queues to the values
not supported when XDP is enabled.
- Removed rcu annotation for xdp_prog. We disable the napi prior to
adding/removing the xdp_prog and reenable it after the program has
been installed for all the queues.
- Ring the tx doorbell once for napi instead of every XDP TX packet.
- Added a new helper function for freeing the FIFO buffer
- Unregister xdp rxq for all the queues when the registration
fails during XDP program installation
- Register xsk rxq only when XSK buff pool is enabled
- Removed code accessing internal xsk_buff_pool fields
- Removed sleep driven code when disabling XSK buff pool. Disable
napi and re-enable it after disabling XSK pool.
- Make sure that we clean up dma mappings on XSK pool disable
- Use napi_if_scheduled_mark_missed to avoid unnecessary napi move
to the CPU calling ndo_xsk_wakeup()
Changes in v3:
- Padding bytes are used if the XDP TX packet headers do not
fit at tail of TX FIFO. Taking these padding bytes into account
while checking if enough space is available in TX FIFO.
Changes in v4:
- Turn on the carrier based on the link status synchronously rather
than asynchronously when XDP is installed/uninstalled
- Set the supported flags in net_device.xdp_features
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Adding AF_XDP zero-copy support.
Note: Although these changes support AF_XDP socket in zero-copy
mode, there is still a copy happening within the driver between
XSK buffer pool and QPL bounce buffers in GQI-QPL format.
In GQI-QPL queue format, the driver needs to allocate a fixed size
memory, the size specified by vNIC device, for RX/TX and register this
memory as a bounce buffer with the vNIC device when a queue is
created. The number of pages in the bounce buffer is limited and the
pages need to be made available to the vNIC by copying the RX data out
to prevent head-of-line blocking. Therefore, we cannot pass the XSK
buffer pool to the vNIC.
The number of copies on RX path from the bounce buffer to XSK buffer is 2
for AF_XDP copy mode (bounce buffer -> allocated page frag -> XSK buffer)
and 1 for AF_XDP zero-copy mode (bounce buffer -> XSK buffer).
This patch contains the following changes:
1) Enable and disable XSK buffer pool
2) Copy XDP packets from QPL bounce buffers to XSK buffer on rx
3) Copy XDP packets from XSK buffer to QPL bounce buffers and
ring the doorbell as part of XDP TX napi poll
4) ndo_xsk_wakeup callback support
Signed-off-by: Praveen Kaligineedi <pkaligineedi@google.com>
Reviewed-by: Jeroen de Borst <jeroendb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch contains the following changes:
1) Support for XDP REDIRECT action on rx
2) ndo_xdp_xmit callback support
In GQI-QPL queue format, the driver needs to allocate a fixed size
memory, the size specified by vNIC device, for RX/TX and register this
memory as a bounce buffer with the vNIC device when a queue is created.
The number of pages in the bounce buffer is limited and the pages need to
be made available to the vNIC by copying the RX data out to prevent
head-of-line blocking. The XDP_REDIRECT packets are therefore immediately
copied to a newly allocated page.
Signed-off-by: Praveen Kaligineedi <pkaligineedi@google.com>
Reviewed-by: Jeroen de Borst <jeroendb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add support for XDP PASS, DROP and TX actions.
This patch contains the following changes:
1) Support installing/uninstalling XDP program
2) Add dedicated XDP TX queues
3) Add support for XDP DROP action
4) Add support for XDP TX action
Signed-off-by: Praveen Kaligineedi <pkaligineedi@google.com>
Reviewed-by: Jeroen de Borst <jeroendb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Changes to enable adding and removing TX queues without calling
gve_close() and gve_open().
Made the following changes:
1) priv->tx, priv->rx and priv->qpls arrays are allocated based on
max tx queues and max rx queues
2) Changed gve_adminq_create_tx_queues(), gve_adminq_destroy_tx_queues(),
gve_tx_alloc_rings() and gve_tx_free_rings() functions to add/remove a
subset of TX queues rather than all the TX queues.
Signed-off-by: Praveen Kaligineedi <pkaligineedi@google.com>
Reviewed-by: Jeroen de Borst <jeroendb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds/modifies helper functions needed to add XDP
support.
Signed-off-by: Praveen Kaligineedi <pkaligineedi@google.com>
Reviewed-by: Jeroen de Borst <jeroendb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Eric Dumazet says:
====================
net: annotate lockless accesses to sk_err[_soft]
This patch series is inspired by yet another syzbot report.
Most poll() handlers are lockless and read sk->sk_err
while other cpus can change it.
Add READ_ONCE/WRITE_ONCE() to major/usual offenders.
More to come later.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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unix_poll() and unix_dgram_poll() read sk->sk_err
without any lock held.
Add relevant READ_ONCE()/WRITE_ONCE() annotations.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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mptcp_poll() reads sk->sk_err without socket lock held/owned.
Add READ_ONCE() and WRITE_ONCE() to avoid load/store tearing.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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tcp_poll() reads sk->sk_err without socket lock held/owned.
We should used READ_ONCE() here, and update writers
to use WRITE_ONCE().
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This field can be read/written without lock synchronization.
tcp and dccp have been handled in different patches.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This field can be read/written without lock synchronization.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This field can be read/written without lock synchronization.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Setting timestamp filter was explicitly disabled on vlan devices in
containers because it might affect other processes on the host. But it's
absolutely legit in case when real device is in the same namespace.
Fixes: 873017af7784 ("vlan: disable SIOCSHWTSTAMP in container")
Signed-off-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Russell King (Oracle) says:
====================
Minor fixes for pcs_get_state() implementations
This series contains a number fixes for minor issues with some
pcs_get_state() implementations, particualrly for the phylink
state->an_enabled member. As they are minor, I'm suggesting we
queue them in net-next as there is follow-on work for these, and
there is no urgency for them to be in -rc.
Just like phylib, state->advertising's Autoneg bit is a copy of
state->an_enabled, and thus it is my intention to remove
state->an_enabled from phylink to simplify things.
This series gets rid of state->an_enabled assignments or
reporting that should never have been there.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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an_enabled will be going away, and in any case, pcs_get_state() should
not be updating this member. Remove the print.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Steen Hegelund <Steen.Hegelund@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Phylink does not want the current state of the link when reading the
PCS link state - it wants the latched state. Don't double-read the
MII status register. Phylink will re-read as necessary to capture
transient link-down events as of dbae3388ea9c ("net: phylink: Force
retrigger in case of latched link-fail indicator").
The above referenced commit is a dependency for this change, and thus
this change should not be backported to any kernel that does not
contain the above referenced commit.
Fixes: fcb26bd2b6ca ("net: phy: Add Synopsys DesignWare XPCS MDIO module")
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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