| Age | Commit message (Collapse) | Author |
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Allow a target driver to attach private data to a target controller by
adding the new field drvdata to struct nvmet_ctrl.
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Rick Wertenbroek <rick.wertenbroek@gmail.com>
Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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In order to have a logically better organized implementation of the
effects log page, split out reporting the supported admin commands from
nvmet_get_cmd_effects_nvm() into the new function
nvmet_get_cmd_effects_admin().
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Rick Wertenbroek <rick.wertenbroek@gmail.com>
Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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Make the function nvmet_update_cc() available to target drivers by
exporting it. To also facilitate the manipulation of the cc register
bits, move the inline helper functions nvmet_cc_en(), nvmet_cc_css(),
nvmet_cc_mps(), nvmet_cc_ams(), nvmet_cc_shn(), nvmet_cc_iosqes(), and
nvmet_cc_iocqes() from core.c to nvmet.h so that these functions can be
reused in target controller drivers.
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Rick Wertenbroek <rick.wertenbroek@gmail.com>
Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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Define the new vendor_id and subsys_vendor_id configfs attribute for
target subsystems. These attributes are respectively reported as the
vid field and as the ssvid field of the identify controller data of
a target controllers using the subsystem for which these attributes
are set.
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Rick Wertenbroek <rick.wertenbroek@gmail.com>
Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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Move the declaration of all helper functions converting NVMe command
opcodes and status codes into strings from drivers/nvme/host/nvme.h
into include/linux/nvme.h, together with the commands definitions.
This allows NVMe target drivers to call these functions without having
to include a host header file.
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Rick Wertenbroek <rick.wertenbroek@gmail.com>
Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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The nvme_poll_cq() function currently returns the number of CQEs
found, However, only one caller, nvme_poll(), requires a boolean
value to check whether any CQE was completed. The other callers do
not use the return value at all.
To better reflect its usage, update the return type of nvme_poll_cq()
from int to bool.
Signed-off-by: Yongsoo Joo <ysjoo@kookmin.ac.kr>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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The xa_store() may fail due to memory allocation failure because there
is no guarantee that the index csi is already used. This fix adds an
error check of the return value of xa_store() in nvme_get_effects_log().
Fixes: 1cf7a12e09aa ("nvme: use an xarray to lookup the Commands Supported and Effects log")
Signed-off-by: Keisuke Nishimura <keisuke.nishimura@inria.fr>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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Since day-1 we are assigning the queue io_cpu very naively. We always
base the queue id (controller scope) and assign it its matching cpu
from the online mask. This works fine when the number of queues match
the number of cpu cores.
The problem starts when we have less queues than cpu cores. First, we
should take into account the mq_map and select a cpu within the cpus
that are assigned to this queue by the mq_map in order to minimize cross
numa cpu bouncing.
Second, even worse is that we don't take into account multiple
controllers may have assigned queues to a given cpu. As a result we may
simply compund more and more queues on the same set of cpus, which is
suboptimal.
We fix this by introducing global per-cpu counters that tracks the
number of queues assigned to each cpu, and we select the least used cpu
based on the mq_map and the per-cpu counters, and assign it as the queue
io_cpu.
The behavior for a single controller is slightly optimized by selecting
better cpu candidates by consulting with the mq_map, and multiple
controllers are spreading queues among cpu cores much better, resulting
in lower average cpu load, and less likelihood to hit hotspots.
Note that the accounting is not 100% perfect, but we don't need to be,
we're simply putting our best effort to select the best candidate cpu
core that we find at any given point.
Another byproduct is that every controller reset/reconnect may change
the queues io_cpu mapping, based on the current LRU accounting scheme.
Here is the baseline queue io_cpu assignment for 4 controllers, 2 queues
per controller, and 4 cpus on the host:
nvme1: queue 0: using cpu 0
nvme1: queue 1: using cpu 1
nvme2: queue 0: using cpu 0
nvme2: queue 1: using cpu 1
nvme3: queue 0: using cpu 0
nvme3: queue 1: using cpu 1
nvme4: queue 0: using cpu 0
nvme4: queue 1: using cpu 1
And this is the fixed io_cpu assignment:
nvme1: queue 0: using cpu 0
nvme1: queue 1: using cpu 2
nvme2: queue 0: using cpu 1
nvme2: queue 1: using cpu 3
nvme3: queue 0: using cpu 0
nvme3: queue 1: using cpu 2
nvme4: queue 0: using cpu 1
nvme4: queue 1: using cpu 3
Fixes: 3f2304f8c6d6 ("nvme-tcp: add NVMe over TCP host driver")
Suggested-by: Hannes Reinecke <hare@kernel.org>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
[fixed kbuild reported errors]
Signed-off-by: Chaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
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There are no module callers of dev_get_by_napi_id(),
and commit d1cacd747768 ("netdev: prevent accessing NAPI instances
from another namespace") proves that getting NAPI by id
needs to be done with care. So hide dev_get_by_napi_id().
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Link: https://patch.msgid.link/20250110004924.3212260-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Dump continuation depends on the NAPI list being sorted.
Broken netlink dump continuation may be rare and hard to debug
so add a warning if we notice the potential problem while walking
the list.
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Link: https://patch.msgid.link/20250110004505.3210140-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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In all 3 cases (cpsw, cpsw-new, am65-cpsw) ALE is being configured in
VLAN-aware mode, while the comment states the opposite. Seems to be a typo
copy-pasted from one driver to another. Fix the commend which has been
puzzling some people (including me) for at least a decade.
Link: https://lore.kernel.org/linux-arm-kernel/4699400.vD3TdgH1nR@localhost/
Link: https://lore.kernel.org/netdev/0106ce78-c83f-4552-a234-1bf7a33f1ed1@kernel.org/
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250109214219.123767-1-alexander.sverdlin@siemens.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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syzbot reported a problem when calling setsockopt(SO_SNDBUF) after a
rekey. SO_SNDBUF calls sk_write_space, ie tls_write_space, which then
calls the original socket's sk_write_space, saved in
ctx->sk_write_space. Rekeys should skip re-assigning
ctx->sk_write_space, so we don't end up with tls_write_space calling
itself.
Fixes: 47069594e67e ("tls: implement rekey for TLS1.3")
Reported-by: syzbot+6ac73b3abf1b598863fa@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/netdev/676d231b.050a0220.2f3838.0461.GAE@google.com/
Tested-by: syzbot+6ac73b3abf1b598863fa@syzkaller.appspotmail.com
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Link: https://patch.msgid.link/ffdbe4de691d1c1eead556bbf42e33ae215304a7.1736436785.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Commit in a fixes tag attempted to fix the issue in the following
sequence of calls:
do_output
-> ovs_vport_send
-> dev_queue_xmit
-> __dev_queue_xmit
-> netdev_core_pick_tx
-> skb_tx_hash
When device is unregistering, the 'dev->real_num_tx_queues' goes to
zero and the 'while (unlikely(hash >= qcount))' loop inside the
'skb_tx_hash' becomes infinite, locking up the core forever.
But unfortunately, checking just the carrier status is not enough to
fix the issue, because some devices may still be in unregistering
state while reporting carrier status OK.
One example of such device is a net/dummy. It sets carrier ON
on start, but it doesn't implement .ndo_stop to set the carrier off.
And it makes sense, because dummy doesn't really have a carrier.
Therefore, while this device is unregistering, it's still easy to hit
the infinite loop in the skb_tx_hash() from the OVS datapath. There
might be other drivers that do the same, but dummy by itself is
important for the OVS ecosystem, because it is frequently used as a
packet sink for tcpdump while debugging OVS deployments. And when the
issue is hit, the only way to recover is to reboot.
Fix that by also checking if the device is running. The running
state is handled by the net core during unregistering, so it covers
unregistering case better, and we don't really need to send packets
to devices that are not running anyway.
While only checking the running state might be enough, the carrier
check is preserved. The running and the carrier states seem disjoined
throughout the code and different drivers. And other core functions
like __dev_direct_xmit() check both before attempting to transmit
a packet. So, it seems safer to check both flags in OVS as well.
Fixes: 066b86787fa3 ("net: openvswitch: fix race on port output")
Reported-by: Friedrich Weber <f.weber@proxmox.com>
Closes: https://mail.openvswitch.org/pipermail/ovs-discuss/2025-January/053423.html
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Tested-by: Friedrich Weber <f.weber@proxmox.com>
Reviewed-by: Aaron Conole <aconole@redhat.com>
Link: https://patch.msgid.link/20250109122225.4034688-1-i.maximets@ovn.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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When tx_max_frame_size was added to struct ravb_hw_info, no value was
set in ravb_rzv2m_hw_info so the default value of zero was used.
The maximum MTU is set by subtracting from tx_max_frame_size to allow
space for headers and frame checksums. As ndev->max_mtu is unsigned,
this subtraction wraps around leading to a ridiculously large positive
value that is obviously incorrect.
Before tx_max_frame_size was introduced, the maximum MTU was based on
rx_max_frame_size. So, we can restore the correct maximum MTU by copying
the rx_max_frame_size value into tx_max_frame_size for RZ/V2M.
Fixes: 1d63864299ca ("net: ravb: Fix maximum TX frame size for GbEth devices")
Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Link: https://patch.msgid.link/20250109113706.1409149-1-paul.barker.ct@bp.renesas.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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hwprov should be protected by rcu_read_lock to prevent possible UAF
Fixes: 4c61d809cf60 ("net: ethtool: Fix suspicious rcu_dereference usage")
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Acked-by: Kory Maincent <kory.maincent@bootlin.com>
diff with v1: move and use err varialbe, instead of define a new variable
net/ethtool/common.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
Link: https://patch.msgid.link/20250109111057.4746-1-lirongqing@baidu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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In mana_driver_exit(), mana_debugfs_root gets cleanup before any of it's
children (which happens later in the pci_unregister_driver()).
Due to this, when mana driver is configured as a module and rmmod is
invoked, following stack gets printed along with failure in rmmod command.
[ 2399.317651] BUG: kernel NULL pointer dereference, address: 0000000000000098
[ 2399.318657] #PF: supervisor write access in kernel mode
[ 2399.319057] #PF: error_code(0x0002) - not-present page
[ 2399.319528] PGD 10eb68067 P4D 0
[ 2399.319914] Oops: Oops: 0002 [#1] SMP NOPTI
[ 2399.320308] CPU: 72 UID: 0 PID: 5815 Comm: rmmod Not tainted 6.13.0-rc5+ #89
[ 2399.320986] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 09/28/2024
[ 2399.321892] RIP: 0010:down_write+0x1a/0x50
[ 2399.322303] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 00 00 55 48 89 e5 41 54 49 89 fc e8 9d cd ff ff 31 c0 ba 01 00 00 00 <f0> 49 0f b1 14 24 75 17 65 48 8b 05 f6 84 dd 5f 49 89 44 24 08 4c
[ 2399.323669] RSP: 0018:ff53859d6c663a70 EFLAGS: 00010246
[ 2399.324061] RAX: 0000000000000000 RBX: ff1d4eb505060180 RCX: ffffff8100000000
[ 2399.324620] RDX: 0000000000000001 RSI: 0000000000000064 RDI: 0000000000000098
[ 2399.325167] RBP: ff53859d6c663a78 R08: 00000000000009c4 R09: ff1d4eb4fac90000
[ 2399.325681] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000098
[ 2399.326185] R13: ff1d4e42e1a4a0c8 R14: ff1d4eb538ce0000 R15: 0000000000000098
[ 2399.326755] FS: 00007fe729570000(0000) GS:ff1d4eb2b7200000(0000) knlGS:0000000000000000
[ 2399.327269] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2399.327690] CR2: 0000000000000098 CR3: 00000001c0584005 CR4: 0000000000373ef0
[ 2399.328166] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2399.328623] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400
[ 2399.329055] Call Trace:
[ 2399.329243] <TASK>
[ 2399.329379] ? show_regs+0x69/0x80
[ 2399.329602] ? __die+0x25/0x70
[ 2399.329856] ? page_fault_oops+0x271/0x550
[ 2399.330088] ? psi_group_change+0x217/0x470
[ 2399.330341] ? do_user_addr_fault+0x455/0x7b0
[ 2399.330667] ? finish_task_switch.isra.0+0x91/0x2f0
[ 2399.331004] ? exc_page_fault+0x73/0x160
[ 2399.331275] ? asm_exc_page_fault+0x27/0x30
[ 2399.343324] ? down_write+0x1a/0x50
[ 2399.343631] simple_recursive_removal+0x4d/0x2c0
[ 2399.343977] ? __pfx_remove_one+0x10/0x10
[ 2399.344251] debugfs_remove+0x45/0x70
[ 2399.344511] mana_destroy_rxq+0x44/0x400 [mana]
[ 2399.344845] mana_destroy_vport+0x54/0x1c0 [mana]
[ 2399.345229] mana_detach+0x2f1/0x4e0 [mana]
[ 2399.345466] ? ida_free+0x150/0x160
[ 2399.345718] ? __cond_resched+0x1a/0x50
[ 2399.345987] mana_remove+0xf4/0x1a0 [mana]
[ 2399.346243] mana_gd_remove+0x25/0x80 [mana]
[ 2399.346605] pci_device_remove+0x41/0xb0
[ 2399.346878] device_remove+0x46/0x70
[ 2399.347150] device_release_driver_internal+0x1e3/0x250
[ 2399.347831] ? klist_remove+0x81/0xe0
[ 2399.348377] driver_detach+0x4b/0xa0
[ 2399.348906] bus_remove_driver+0x83/0x100
[ 2399.349435] driver_unregister+0x31/0x60
[ 2399.349919] pci_unregister_driver+0x40/0x90
[ 2399.350492] mana_driver_exit+0x1c/0xb50 [mana]
[ 2399.351102] __do_sys_delete_module.constprop.0+0x184/0x320
[ 2399.351664] ? __fput+0x1a9/0x2d0
[ 2399.352200] __x64_sys_delete_module+0x12/0x20
[ 2399.352760] x64_sys_call+0x1e66/0x2140
[ 2399.353316] do_syscall_64+0x79/0x150
[ 2399.353813] ? syscall_exit_to_user_mode+0x49/0x230
[ 2399.354346] ? do_syscall_64+0x85/0x150
[ 2399.354816] ? irqentry_exit+0x1d/0x30
[ 2399.355287] ? exc_page_fault+0x7f/0x160
[ 2399.355756] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 2399.356302] RIP: 0033:0x7fe728d26aeb
[ 2399.356776] Code: 73 01 c3 48 8b 0d 45 33 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 b0 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 15 33 0f 00 f7 d8 64 89 01 48
[ 2399.358372] RSP: 002b:00007ffff954d6f8 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0
[ 2399.359066] RAX: ffffffffffffffda RBX: 00005609156cc760 RCX: 00007fe728d26aeb
[ 2399.359779] RDX: 000000000000000a RSI: 0000000000000800 RDI: 00005609156cc7c8
[ 2399.360535] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 2399.361261] R10: 00007fe728dbeac0 R11: 0000000000000206 R12: 00007ffff954d950
[ 2399.361952] R13: 00005609156cc2a0 R14: 00007ffff954ee5f R15: 00005609156cc760
[ 2399.362688] </TASK>
Fixes: 6607c17c6c5e ("net: mana: Enable debugfs files for MANA device")
Cc: stable@vger.kernel.org
Signed-off-by: Shradha Gupta <shradhagupta@linux.microsoft.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Link: https://patch.msgid.link/1736398991-764-1-git-send-email-shradhagupta@linux.microsoft.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Etienne Champetier says:
====================
ipvlan: Support bonding events
====================
Link: https://patch.msgid.link/20250109032819.326528-1-champetier.etienne@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This rework bond_macvlan.sh into bond_macvlan_ipvlan.sh
We only test bridge mode for macvlan and l2 mode
]# ./bond_macvlan_ipvlan.sh
TEST: active-backup/macvlan_bridge: IPv4: client->server [ OK ]
...
TEST: active-backup/ipvlan_l2: IPv4: client->server [ OK ]
...
TEST: balance-tlb/macvlan_bridge: IPv4: client->server [ OK ]
...
TEST: balance-tlb/ipvlan_l2: IPv4: client->server [ OK ]
...
TEST: balance-alb/macvlan_bridge: IPv4: client->server [ OK ]
...
TEST: balance-alb/ipvlan_l2: IPv4: client->server [ OK ]
...
Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>
Link: https://patch.msgid.link/20250109032819.326528-3-champetier.etienne@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This allows ipvlan to function properly on top of
bonds using active-backup mode.
This was implemented for macvlan in 2014 in commit
4c9912556867 ("macvlan: Support bonding events").
Signed-off-by: Etienne Champetier <champetier.etienne@gmail.com>
Link: https://patch.msgid.link/20250109032819.326528-2-champetier.etienne@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Commit 86e25f40aa1e ("net: napi: Add napi_config") moved napi->napi_id
assignment to a later point in time (napi_hash_add_with_id). This breaks
__xdp_rxq_info_reg which copies napi_id at an earlier time and now
stores 0 napi_id. It also makes sk_mark_napi_id_once_xdp and
__sk_mark_napi_id_once useless because they now work against 0 napi_id.
Since sk_busy_loop requires valid napi_id to busy-poll on, there is no way
to busy-poll AF_XDP sockets anymore.
Bring back the ability to busy-poll on XSK by resolving socket's napi_id
at bind time. This relies on relatively recent netif_queue_set_napi,
but (assume) at this point most popular drivers should have been converted.
This also removes per-tx/rx cycles which used to check and/or set
the napi_id value.
Confirmed by running a busy-polling AF_XDP socket
(github.com/fomichev/xskrtt) on mlx5 and looking at BusyPollRxPackets
from /proc/net/netstat.
Fixes: 86e25f40aa1e ("net: napi: Add napi_config")
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Link: https://patch.msgid.link/20250109003436.2829560-1-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Recalculate features when XDP is detached.
Before:
# ip li set dev eth0 xdp obj xdp_dummy.bpf.o sec xdp
# ip li set dev eth0 xdp off
# ethtool -k eth0 | grep gro
rx-gro-hw: off [requested on]
After:
# ip li set dev eth0 xdp obj xdp_dummy.bpf.o sec xdp
# ip li set dev eth0 xdp off
# ethtool -k eth0 | grep gro
rx-gro-hw: on
The fact that HW-GRO doesn't get re-enabled automatically is just
a minor annoyance. The real issue is that the features will randomly
come back during another reconfiguration which just happens to invoke
netdev_update_features(). The driver doesn't handle reconfiguring
two things at a time very robustly.
Starting with commit 98ba1d931f61 ("bnxt_en: Fix RSS logic in
__bnxt_reserve_rings()") we only reconfigure the RSS hash table
if the "effective" number of Rx rings has changed. If HW-GRO is
enabled "effective" number of rings is 2x what user sees.
So if we are in the bad state, with HW-GRO re-enablement "pending"
after XDP off, and we lower the rings by / 2 - the HW-GRO rings
doing 2x and the ethtool -L doing / 2 may cancel each other out,
and the:
if (old_rx_rings != bp->hw_resc.resv_rx_rings &&
condition in __bnxt_reserve_rings() will be false.
The RSS map won't get updated, and we'll crash with:
BUG: kernel NULL pointer dereference, address: 0000000000000168
RIP: 0010:__bnxt_hwrm_vnic_set_rss+0x13a/0x1a0
bnxt_hwrm_vnic_rss_cfg_p5+0x47/0x180
__bnxt_setup_vnic_p5+0x58/0x110
bnxt_init_nic+0xb72/0xf50
__bnxt_open_nic+0x40d/0xab0
bnxt_open_nic+0x2b/0x60
ethtool_set_channels+0x18c/0x1d0
As we try to access a freed ring.
The issue is present since XDP support was added, really, but
prior to commit 98ba1d931f61 ("bnxt_en: Fix RSS logic in
__bnxt_reserve_rings()") it wasn't causing major issues.
Fixes: 1054aee82321 ("bnxt_en: Use NETIF_F_GRO_HW.")
Fixes: 98ba1d931f61 ("bnxt_en: Fix RSS logic in __bnxt_reserve_rings()")
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Link: https://patch.msgid.link/20250109043057.2888953-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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As pointed out in the original comment, lookup in sockmap can return a TCP
ESTABLISHED socket. Such TCP socket may have had SO_ATTACH_REUSEPORT_EBPF
set before it was ESTABLISHED. In other words, a non-NULL sk_reuseport_cb
does not imply a non-refcounted socket.
Drop sk's reference in both error paths.
unreferenced object 0xffff888101911800 (size 2048):
comm "test_progs", pid 44109, jiffies 4297131437
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
80 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace (crc 9336483b):
__kmalloc_noprof+0x3bf/0x560
__reuseport_alloc+0x1d/0x40
reuseport_alloc+0xca/0x150
reuseport_attach_prog+0x87/0x140
sk_reuseport_attach_bpf+0xc8/0x100
sk_setsockopt+0x1181/0x1990
do_sock_setsockopt+0x12b/0x160
__sys_setsockopt+0x7b/0xc0
__x64_sys_setsockopt+0x1b/0x30
do_syscall_64+0x93/0x180
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Fixes: 64d85290d79c ("bpf: Allow bpf_map_lookup_elem for SOCKMAP and SOCKHASH")
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Reviewed-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://patch.msgid.link/20250110-reuseport-memleak-v1-1-fa1ddab0adfe@rbox.co
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Russell King says:
====================
net: stmmac: clean up and fix EEE implementation
This is a rework of stmmac's EEE support in light of the addition of EEE
management to phylib. It's slightly more than 15 patches, but I think it
makes sense to be so.
Patch 1 adds configuration of the receive clock phy_eee_rx_clock_stop()
(which was part of another series, but is necessary for this patch set.)
Patch 2 converts stmmac to use phylib's tracking of tx_lpi_timer.
Patch 3 corrects the data type used for things involving the LPI
timer. The user API uses u32, so stmmac should do too, rather than
blindly converting it to "int". eee_timer is left for patch 4.
Patch 4 (new) uses an unsigned int for eee_timer.
Patch 5 makes stmmac EEE state depend on phylib's enable_tx_lpi flag,
thus using phylib's resolution of EEE state.
Patch 6 removes redundant code from the ethtool EEE operations.
Patch 7 removes some redundant code in stmmac_disable_eee_mode()
and renames it to stmmac_disable_sw_eee_mode() to better reflect its
purpose.
Patch 8 removes the driver private tx_lpi_enabled, which is managed by
phylib since patch 4.
Patch 9 removes the dependence of EEE error statistics on the EEE
enable state, instead depending on whether EEE is supported by the
hardware.
Patch 10 removes phy_init_eee(), instead using phy_eee_rx_clock_stop()
to configure whether the PHY may stop the receive clock.
Patch 11 removes priv->eee_tw_timer, which is only ever set to one
value at probe time, effectively it is a constant. Hence this is
unnecessary complexity.
Patch 12 moves priv->eee_enabled into stmmac_eee_init(), and placing
it under the protection of priv->lock, except when EEE is not
supported (where it becomes constant-false.)
Patch 13 moves priv->eee_active also into stmmac_eee_init(), so
the indication whether EEE should be enabled or not is passed in
to this function.
Since both priv->eee_enabled and priv->eee_active are assigned
true/false values, they should be typed "bool". Make it sew in
patch 14. No Singer machine required.
Patch 15 moves the initialisation of priv->eee_ctrl_timer to the
probe function - it makes no sense to re-initialise the timer each
time we want to start using it.
Patch 16 removes the unnecessary EEE handling in the driver tear-down
method. The core net code will have brought the interface down
already, meaning EEE has already been disabled.
Patch 17 reorganises the code to split the hardware LPI timer
control paths from the software LPI timer paths.
Patch 18 works on this further by eliminating
stmmac_lpi_entry_timer_config() and making direct calls to the new
functions. This reveals a potential bug where priv->eee_sw_timer_en
is set true when EEE is disabled. This is not addressed in this
series, but will be in a future separate patch - so that if fixing
that causes a regression, it can be handled separately.
====================
Link: https://patch.msgid.link/Z36sHIlnExQBuFJE@shell.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Remove stmmac_lpi_entry_timer_config(), setting priv->eee_sw_timer_en
at the original call sites, and calling the appropriate
stmmac_xxx_hw_lpi_timer() function. No functional change.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tVZEq-0002LQ-PC@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Provide stmmac_disable_hw_lpi_timer() and stmmac_enable_hw_lpi_timer()
to control the hardware transmit LPI timer.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tVZEl-0002LK-LA@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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phylink_stop() will cause phylink to call the mac_link_down() operation
before phylink_stop() returns. As mac_link_down() will call
stmmac_eee_init(false), this will set both priv->eee_active and
priv->eee_enabled to be false, deleting the eee_ctrl_timer if
priv->eee_enabled was previously set.
As stmmac_release() calls phylink_stop() before checking whether
priv->eee_enabled is true, this is a condition that can never be
satisfied, and thus the code within this if() block will never be
executed. Remove it.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tVZEg-0002LE-HH@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Move the initialisation of the EEE software timer to the probe function
as it is unnecessary to do this each time we enable software LPI.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tVZEb-0002L8-DJ@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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priv->eee_enabled and priv->eee_active are both assigned using boolean
values. Type them as bool rather than int.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tVZEW-0002L2-9w@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Since all call sites of stmmac_eee_init() assign priv->eee_active
immediately before, pass this state into stmmac_eee_init() and
assign priv->eee_active within this function.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tVZER-0002Kv-5O@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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All call sites for stmmac_eee_init() assign the return code to
priv->eee_enabled. Rather than having this coded at each call site,
move the assignment inside stmmac_eee_init().
Since stmmac_init_eee() takes priv->lock before checking the state of
priv->eee_enabled, move the assignment within the locked region. Also,
stmmac_suspend() checks the state of this member under the lock. While
two concurrent calls to stmmac_init_eee() aren't possible, there is
a possibility that stmmac_suspend() may run concurrently with a change
of priv->eee_enabled unless we modify it under the lock.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tVZEM-0002Kq-2Z@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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priv->eee_tw_timer is only assigned during initialisation to a
constant value (STMMAC_DEFAULT_TWT_LS) and then never changed.
Remove priv->eee_tw_timer, and instead use STMMAC_DEFAULT_TWT_LS
for both uses in stmmac_eee_init().
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tVZEG-0002Kk-VH@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Convert stmmac to use phy_eee_rx_clock_stop() to set the PHY receive
clock stop in LPI setting, rather than calling the legacy
phy_init_eee() function.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tVZEB-0002Ke-RZ@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Report the number of EEE error statistics in the xstats even when EEE
is not enabled in hardware, but is supported. The PHY maintains this
counter even when EEE is not enabled.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tVZE6-0002KY-Nx@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
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Through using phylib's EEE state, priv->tx_lpi_enabled has become a
write-only variable. Remove it.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tVZE1-0002KS-K1@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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stmmac_disable_eee_mode() is now only called from stmmac_xmit() when
both priv->tx_path_in_lpi_mode and priv->eee_sw_timer_en are true.
Therefore:
if (!priv->eee_sw_timer_en)
in stmmac_disable_eee_mode() will never be true, so this is dead code.
Remove it, and rename the function to indicate that it now only deals
with software based EEE mode.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tVZDw-0002KL-Gg@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
Setting edata->tx_lpi_enabled in stmmac_ethtool_op_get_eee() gets
overwritten by phylib, so there's no point setting this.
In stmmac_ethtool_op_set_eee(), now that stmmac is using the result of
phylib's evaluation of EEE, there is no need to handle anything in the
ethtool EEE ops other than calling through to the appropriate phylink
function, which will pass on to phylib the users request.
As stmmac_disable_eee_mode() is now no longer called from outside
stmmac_main.c, make it static.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tVZDr-0002KF-Cv@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
Make stmmac EEE depend on phylib's evaluation of user settings and PHY
negotiation, as indicated by phy->enable_tx_lpi. This will ensure when
phylib has evaluated that the user has disabled LPI, phy_init_eee()
will not be called, and priv->eee_active will be false, causing LPI/EEE
to be disabled.
This is an interim measure - phy_init_eee() will be removed in a later
patch.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tVZDm-0002K9-9w@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
Since eee_timer is used to initialise priv->tx_lpi_timer, this also
should be unsigned to avoid a negative number being interpreted as a
very large positive number. Note that this makes the check for negative
numbers passed in as a module parameter redundant, and passing a
negative number will now produce a large delay rather than the
default. Since the default is used without an argument, passing a
negative number would be quite obscure. However, if users do, then
this will need to be revisited.
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tVZDh-0002K3-6y@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
The ethtool interface uses u32 for tx_lpi_timer, and so does phylib.
Use u32 to store this internally within stmmac rather than "int"
which could misinterpret large values.
Correct "value" in dwmac4_set_eee_lpi_entry_timer() to use u32
rather than int, which is derived from tx_lpi_timer. Even though this
path won't be used with values larger than STMMAC_ET_MAX, this brings
consistency of type usage to the stmmac code for this variable.
We leave eee_timer unchanged for now, with the assumption that values
up to INT_MAX will safely fit in a u32.
Tested-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tVZDc-0002Jx-3b@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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|
When stmmac_ethtool_op_get_eee() is called, stmmac sets the tx_lpi_timer
and tx_lpi_enabled members, and then calls into phylink and thus phylib.
phylib overwrites these members.
phylib will also cause a link down/link up transition when settings
that impact the MAC have been changed.
Convert stmmac to use the tx_lpi_timer setting in struct phy_device,
updating priv->tx_lpi_timer each time when the link comes up, rather
than trying to maintain this user setting itself. We initialise the
phylib tx_lpi_timer setting by doing a get_ee-modify-set_eee sequence
with the last known priv->tx_lpi_timer value. In order for this to work
correctly, we also need this member to be initialised earlier.
As stmmac_eee_init() is no longer called outside of stmmac_main.c, make
it static.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tVZDW-0002Jr-W3@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
Add a function to allow configuration of the PCS's clock stop enable
bit, used to configure whether the xMII receive clock can be stopped
during LPI mode.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1tVZDR-0002Jl-Ry@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Maddy is taking over the day-to-day maintenance of powerpc. I will still
be around to help, and as a backup.
Re-order the main POWERPC list to put Maddy first to reflect that.
KVM/powerpc patches will be handled by Maddy via the powerpc tree with
review from Nick, so replace myself with Maddy there.
Remove myself from BPF, leaving Hari & Christophe as maintainers.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
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After commit 9a213d3b80c0, we can pass additional attributes along with
read/write. However, userspace doesn't know that. Add a new feature flag
IORING_FEAT_RW_ATTR, to notify the userspace that the kernel has this
ability.
Signed-off-by: Anuj Gupta <anuj20.g@samsung.com>
Reviewed-by: Li Zetao <lizetao1@huawei.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Tested-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/20241205062109.1788-1-anuj20.g@samsung.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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|
automounting
In some cases, when password2 becomes the working password, the
client swaps the two password fields in the root session struct, but
not in the smb3_fs_context struct in cifs_sb. DFS automounts inherit
fs context from their parent mounts. Therefore, they might end up
getting the passwords in the stale order.
The automount should succeed, because the mount function will end up
retrying with the actual password anyway. But to reduce these
unnecessary session setup retries for automounts, we can sync the
parent context's passwords with the root session's passwords before
duplicating it to the child's fs context.
Cc: stable@vger.kernel.org
Signed-off-by: Meetakshi Setiya <msetiya@microsoft.com>
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Acked-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext
Pull sched_ext fixes from Tejun Heo:
- Fix corner case bug where ops.dispatch() couldn't extend the
execution of the current task if SCX_OPS_ENQ_LAST is set.
- Fix ops.cpu_release() not being called when a SCX task is preempted
by a higher priority sched class task.
- Fix buitin idle mask being incorrectly left as busy after an idle CPU
is picked and kicked.
- scx_ops_bypass() was unnecessarily using rq_lock() which comes with
rq pinning related sanity checks which could trigger spuriously.
Switch to raw_spin_rq_lock().
* tag 'sched_ext-for-6.13-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext:
sched_ext: idle: Refresh idle masks during idle-to-idle transitions
sched_ext: switch class when preempted by higher priority scheduler
sched_ext: Replace rq_lock() to raw_spin_rq_lock() in scx_ops_bypass()
sched_ext: keep running prev when prev->scx.slice != 0
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|
git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup fixes from Tejun Heo:
"Cpuset fixes:
- Fix isolated CPUs leaking into sched domains
- Remove now unnecessary kernfs active break which can trigger a
warning
- Comment updates"
* tag 'cgroup-for-6.13-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup/cpuset: remove kernfs active break
cgroup/cpuset: Prevent leakage of isolated CPUs into sched domains
cgroup/cpuset: Remove stale text
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull workqueue fix from Tejun Heo:
- Add a WARN_ON_ONCE() on queue_delayed_work_on() on an offline CPU as
such work items won't get executed till the CPU comes back online
* tag 'wq-for-6.13-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: warn if delayed_work is queued to an offlined cpu.
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control fix from Rafael Wysocki:
"Fix an OF node leak in the code parsing thermal zone DT properties
(Joe Hattori)"
* tag 'thermal-6.13-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
thermal: of: fix OF node leak in of_thermal_zone_find()
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In 'ath9k_hw_get_nf_hist_mid()', prefer 'memcpy()' and 'sort()'
over an ad-hoc things. Briefly tested as a separate module.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://patch.msgid.link/20250109080703.106692-1-dmantipov@yandex.ru
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"Add two more ACPI IRQ override quirks and update the code using them
to avoid unnecessary overhead (Hans de Goede)"
* tag 'acpi-6.13-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: resource: acpi_dev_irq_override(): Check DMI match last
ACPI: resource: Add TongFang GM5HG0A to irq1_edge_low_force_override[]
ACPI: resource: Add Asus Vivobook X1504VAP to irq1_level_low_skip_override[]
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