The block layer allocates the set's maps once. We can't add special
purpose queues at runtime if they weren't allocated at initialization
time.
Tested-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
If the user reduces the special queue count at runtime and resets the
controller, we need to reduce the number of queues and interrupts
requested accordingly rather than start with the pre-allocated queue
count.
Tested-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
A user can change the polled queue count at run time. There's a brief
window during a reset where a hipri task may try to poll that queue
before the block layer has updated the queue maps, which would race with
the now interrupt driven queue and may cause double completions.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
When registering a second fgraph callback, direct path is disabled and
array loop is used instead. When ftrace_graph_active falls back to one,
we try to re-enable direct mode via ftrace_graph_enable_direct(true, ...).
But ftrace_graph_enable_direct() incorrectly disables the static key
rather than enabling it. This leaves fgraph_do_direct permanently off
after first multi-callback transition, so direct fast mode is never
restored.
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260213142932519cuWSpEXeS4-UnCvNXnK2P@zte.com.cn
Fixes: cc60ee813b ("function_graph: Use static_call and branch to optimize entry function")
Signed-off-by: Shengming Hu <hu.shengming@zte.com.cn>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Modify acpi_button_remove() to get the ACPI device object pointer
from button->adev instead of retrieving it with the help of the
ACPI_COMPANION() macro to reduce overhead slightly.
While at it, rename the struct acpi_device pointer variable in
acpi_button_remove() to adev.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/13948466.uLZWGnKmhe@rafael.j.wysocki
Modify struct acpi_button to hold a struct device pointer instead
of a struct platform_device one to avoid unnecessary pointer
dereferences and use that pointer consistently for system wakeup
initialization, handling and cleanup.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/1948258.tdWV9SEqCh@rafael.j.wysocki
In acpi_battery_remove(), "battery" cannot be NULL because it is the
driver data of the platform device passed to that function and it has
been set by acpi_battery_probe(), so drop the redundant check of it
against NULL.
Moreover, getting the ACPI device pointer from battery->device is
slightly less overhead than using the ACPI_COMPANION() macro on the
platform device to retrieve it, so do that and drop the check of that
pointer against NULL which is also redundant.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/12836976.O9o76ZdvQC@rafael.j.wysocki
VMs created without an associated xe_file originate from kernel
contexts and should use kernel exec queues. Ensure such VMs
create bind exec queues with EXEC_QUEUE_FLAG_KERNEL set.
Let's ensure bind exec queues created for kernel VMs are always
marked with EXEC_QUEUE_FLAG_KERNEL.
Signed-off-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patch.msgid.link/20260211171441.3246686-1-piotr.piorkowski@intel.com
- Add support for control flow integrity for userspace processes.
This is based on the standard RISC-V ISA extensions Zicfiss and
Zicfilp
- Improve ptrace behavior regarding vector registers, and add some selftests
- Optimize our strlen() assembly
- Enable the ISO-8859-1 code page as built-in, similar to ARM64, for EFI
volume mounting
- Clean up some code slightly, including defining copy_user_page() as
copy_page() rather than memcpy(), aligning us with other
architectures; and using max3() to slightly simplify an expression
in riscv_iommu_init_check()
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Merge tag 'riscv-for-linus-7.0-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Paul Walmsley:
- Add support for control flow integrity for userspace processes.
This is based on the standard RISC-V ISA extensions Zicfiss and
Zicfilp
- Improve ptrace behavior regarding vector registers, and add some
selftests
- Optimize our strlen() assembly
- Enable the ISO-8859-1 code page as built-in, similar to ARM64, for
EFI volume mounting
- Clean up some code slightly, including defining copy_user_page() as
copy_page() rather than memcpy(), aligning us with other
architectures; and using max3() to slightly simplify an expression
in riscv_iommu_init_check()
* tag 'riscv-for-linus-7.0-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (42 commits)
riscv: lib: optimize strlen loop efficiency
selftests: riscv: vstate_exec_nolibc: Use the regular prctl() function
selftests: riscv: verify ptrace accepts valid vector csr values
selftests: riscv: verify ptrace rejects invalid vector csr inputs
selftests: riscv: verify syscalls discard vector context
selftests: riscv: verify initial vector state with ptrace
selftests: riscv: test ptrace vector interface
riscv: ptrace: validate input vector csr registers
riscv: csr: define vtype register elements
riscv: vector: init vector context with proper vlenb
riscv: ptrace: return ENODATA for inactive vector extension
kselftest/riscv: add kselftest for user mode CFI
riscv: add documentation for shadow stack
riscv: add documentation for landing pad / indirect branch tracking
riscv: create a Kconfig fragment for shadow stack and landing pad support
arch/riscv: add dual vdso creation logic and select vdso based on hw
arch/riscv: compile vdso with landing pad and shadow stack note
riscv: enable kernel access to shadow stack memory via the FWFT SBI call
riscv: add kernel command line option to opt out of user CFI
riscv/hwprobe: add zicfilp / zicfiss enumeration in hwprobe
...
Ziyi Guo says:
====================
net: mscc: ocelot: fix missing lock in ocelot_port_xmit()
ocelot_port_xmit() calls ocelot_can_inject() and
ocelot_port_inject_frame() without holding the injection group lock.
Both functions contain lockdep_assert_held() for the injection lock,
and the correct caller felix_port_deferred_xmit() properly acquires
the lock using ocelot_lock_inj_grp() before calling these functions.
this v3 splits the fix into a 3-patch series to separate
refactoring from the behavioral change:
1/3: Extract the PTP timestamp handling into an ocelot_xmit_timestamp()
helper so the logic isn't duplicated when the function is split.
2/3: Split ocelot_port_xmit() into ocelot_port_xmit_fdma() and
ocelot_port_xmit_inj(), keeping the FDMA and register injection
code paths fully separate.
3/3: Add ocelot_lock_inj_grp()/ocelot_unlock_inj_grp() in
ocelot_port_xmit_inj() to fix the missing lock protection.
Patches 1-2 are pure refactors with no behavioral change.
Patch 3 is the actual bug fix.
====================
Link: https://patch.msgid.link/20260208225602.1339325-1-n7l8m4@u.northwestern.edu
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
ocelot_port_xmit_inj() calls ocelot_can_inject() and
ocelot_port_inject_frame() without holding the injection group lock.
Both functions contain lockdep_assert_held() for the injection lock,
and the correct caller felix_port_deferred_xmit() properly acquires
the lock using ocelot_lock_inj_grp() before calling these functions.
Add ocelot_lock_inj_grp()/ocelot_unlock_inj_grp() around the register
injection path to fix the missing lock protection. The FDMA path is not
affected as it uses its own locking mechanism.
Fixes: c5e12ac3be ("net: mscc: ocelot: serialize access to the injection/extraction groups")
Signed-off-by: Ziyi Guo <n7l8m4@u.northwestern.edu>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://patch.msgid.link/20260208225602.1339325-4-n7l8m4@u.northwestern.edu
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Split ocelot_port_xmit() into two separate functions:
- ocelot_port_xmit_fdma(): handles the FDMA injection path
- ocelot_port_xmit_inj(): handles the register-based injection path
The top-level ocelot_port_xmit() now dispatches to the appropriate
function based on the ocelot_fdma_enabled static key.
This is a pure refactor with no behavioral change. Separating the two
code paths makes each one simpler and prepares for adding proper locking
to the register injection path without affecting the FDMA path.
Signed-off-by: Ziyi Guo <n7l8m4@u.northwestern.edu>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://patch.msgid.link/20260208225602.1339325-3-n7l8m4@u.northwestern.edu
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Extract the PTP timestamp handling logic from ocelot_port_xmit() into a
separate ocelot_xmit_timestamp() helper function. This is a pure
refactor with no behavioral change.
The helper returns false if the skb was consumed (freed) due to a
timestamp request failure, and true if the caller should continue with
frame injection. The rew_op value is returned via pointer.
This prepares for splitting ocelot_port_xmit() into separate FDMA and
register injection paths in a subsequent patch.
Signed-off-by: Ziyi Guo <n7l8m4@u.northwestern.edu>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://patch.msgid.link/20260208225602.1339325-2-n7l8m4@u.northwestern.edu
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
DWRR (Deficit Weighted Round Robin) scheduling distributes bandwidth
across traffic classes based on per-queue cost values, where lower cost
means higher bandwidth share.
The SPX5_DWRR_COST_MAX constant is 63 (6 bits) but the hardware
register field HSCH_DWRR_ENTRY_DWRR_COST is GENMASK(24, 20), only
5 bits wide (max 31). This causes sparx5_weight_to_hw_cost() to
compute cost values that silently overflow via FIELD_PREP, resulting
in incorrect scheduling weights.
Set SPX5_DWRR_COST_MAX to 31 to match the hardware register width.
Fixes: 211225428d ("net: microchip: sparx5: add support for offloading ets qdisc")
Signed-off-by: Daniel Machon <daniel.machon@microchip.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260210-sparx5-fix-dwrr-cost-max-v1-1-58fbdbc25652@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When the PCA-200E or SBA-200E adapter is being detached, the fore200e
is deallocated. However, the tx_tasklet or rx_tasklet may still be running
or pending, leading to use-after-free bug when the already freed fore200e
is accessed again in fore200e_tx_tasklet() or fore200e_rx_tasklet().
One of the race conditions can occur as follows:
CPU 0 (cleanup) | CPU 1 (tasklet)
fore200e_pca_remove_one() | fore200e_interrupt()
fore200e_shutdown() | tasklet_schedule()
kfree(fore200e) | fore200e_tx_tasklet()
| fore200e-> // UAF
Fix this by ensuring tx_tasklet or rx_tasklet is properly canceled before
the fore200e is released. Add tasklet_kill() in fore200e_shutdown() to
synchronize with any pending or running tasklets. Moreover, since
fore200e_reset() could prevent further interrupts or data transfers,
the tasklet_kill() should be placed after fore200e_reset() to prevent
the tasklet from being rescheduled in fore200e_interrupt(). Finally,
it only needs to do tasklet_kill() when the fore200e state is greater
than or equal to FORE200E_STATE_IRQ, since tasklets are uninitialized
in earlier states. In a word, the tasklet_kill() should be placed in
the FORE200E_STATE_IRQ branch within the switch...case structure.
This bug was identified through static analysis.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable@kernel.org
Suggested-by: Jijie Shao <shaojijie@huawei.com>
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Reviewed-by: Jijie Shao <shaojijie@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260210094537.9767-1-duoming@zju.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
For GMAC4, when split header is enabled, in some rare cases, the
hardware does not fill buf2 of the first descriptor with payload.
Thus we cannot assume buf2 is always fully filled if it is not
the last descriptor. Otherwise, the length of buf2 of the second
descriptor will be calculated wrong and cause an oops:
Unable to handle kernel paging request at virtual address ffff00019246bfc0
...
x2 : 0000000000000040 x1 : ffff00019246bfc0 x0 : ffff00009246c000
Call trace:
dcache_inval_poc+0x28/0x58 (P)
dma_direct_sync_single_for_cpu+0x38/0x6c
__dma_sync_single_for_cpu+0x34/0x6c
stmmac_napi_poll_rx+0x8f0/0xb60
__napi_poll.constprop.0+0x30/0x144
net_rx_action+0x160/0x274
handle_softirqs+0x1b8/0x1fc
...
To fix this, the PL bit-field in RDES3 register is used for all
descriptors, whether it is the last descriptor or not.
Fixes: ec222003bd ("net: stmmac: Prepare to add Split Header support")
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jie Zhang <jie.zhang@analog.com>
Link: https://patch.msgid.link/20260209225037.589130-1-jie.zhang@analog.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The ID 8086:104f is matched by both i40e and ipw2200. The same device
ID should not be in more than one driver, because in that case, which
driver is used is unpredictable. Fix this by taking advantage of the
fact that i40e devices use PCI_CLASS_NETWORK_ETHERNET and ipw2200
devices use PCI_CLASS_NETWORK_OTHER to differentiate the devices.
Fixes: 2e45d3f467 ("i40e: Add support for X710 B/P & SFP+ cards")
Cc: stable@vger.kernel.org
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Ethan Nelson-Moore <enelsonmoore@gmail.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Link: https://patch.msgid.link/20260210021235.16315-1-enelsonmoore@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The _get_unused_cpus() function can return CPU numbers >= 16, which
exceeds RPS_MAX_CPUS in toeplitz.c. When this happens, the test fails
with a cryptic message:
# Exception| Traceback (most recent call last):
# Exception| File "/tmp/cur/linux/tools/testing/selftests/net/lib/py/ksft.py", line 319, in ksft_run
# Exception| func(*args)
# Exception| File "/tmp/cur/linux/tools/testing/selftests/drivers/net/hw/toeplitz.py", line 189, in test
# Exception| with bkg(" ".join(rx_cmd), ksft_ready=True, exit_wait=True) as rx_proc:
# Exception| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
# Exception| File "/tmp/cur/linux/tools/testing/selftests/net/lib/py/utils.py", line 124, in __init__
# Exception| super().__init__(comm, background=True,
# Exception| File "/tmp/cur/linux/tools/testing/selftests/net/lib/py/utils.py", line 77, in __init__
# Exception| raise Exception("Did not receive ready message")
# Exception| Exception: Did not receive ready message
Rename _get_unused_cpus() to _get_unused_rps_cpus() and cap the CPU
search range to RPS_MAX_CPUS.
Reviewed-by: Nimrod Oren <noren@nvidia.com>
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260210093110.1935149-1-gal@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The testcase failed as below:
$./vlan_bridge_binding.sh
...
+ adf_ip_link_set_up d1
+ local name=d1
+ shift
+ ip_link_is_up d1
+ ip_link_has_flag d1 UP
+ local name=d1
+ shift
+ local flag=UP
+ shift
++ ip -j link show d1
++ jq --arg flag UP 'any(.[].flags.[]; . == $flag)'
jq: error: syntax error, unexpected '[', expecting FORMAT or QQSTRING_START
(Unix shell quoting issues?) at <top-level>, line 1:
any(.[].flags.[]; . == $flag)
jq: 1 compile error
Remove the extra dot (.) after flags array to fix this.
Fixes: 4baa1d3a50 ("selftests: net: lib: Add ip_link_has_flag()")
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Link: https://patch.msgid.link/20260211022146.190948-1-yuehaibing@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
As explained in [1], iproute2 started rejecting tc-police burst sizes
that result in an overflow. This can happen when the burst size is high
enough and the rate is low enough.
A couple of test cases specify such configurations, resulting in
iproute2 errors and test failure.
Fix by reducing the burst size so that the test will pass with both new
and old iproute2 versions.
[1] https://lore.kernel.org/netdev/20250916215731.3431465-1-jay.vosburgh@canonical.com/
Fixes: cb12d17632 ("selftests: mlxsw: tc_restrictions: Test tc-police restrictions")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/88b00c6e85188aa6a065dc240206119b328c46e1.1770643998.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Syed Faraz Abrar (@farazsth98) from Zellic, and Pumpkin (@u1f383) from
DEVCORE Research Team working with Trend Micro Zero Day Initiative
report that a RTM_GETNEIGH will return uninitalised data in the pad
bytes of the ndmsg data.
Ensure we're initialising the netlink data to zero, in the link, addr
and neigh response messages.
Fixes: 831119f887 ("mctp: Add neighbour netlink interface")
Fixes: 06d2f4c583 ("mctp: Add netlink route management")
Fixes: 583be982d9 ("mctp: Add device handling and netlink interface")
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260209-dev-mctp-nlmsg-v1-1-f1e30c346a43@codeconstruct.com.au
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
New Features:
* Use an LRU list for returning unused delegations
* Introduce a KConfig option to disable NFS v4.0 and make NFS v4.1 the default
Bugfixes:
* NFS/localio: Handle short writes by retrying
* NFS/localio: prevent direct reclaim recursion into NFS via nfs_writepages
* NFS/localio: use GFP_NOIO and non-memreclaim workqueue in nfs_local_commit
* NFS/localio: remove -EAGAIN handling in nfs_local_doio()
* pNFS: fix a missing wake up while waiting on NFS_LAYOUT_DRAIN
* fs/nfs: Fix a readdir slow-start regression
* SUNRPC: fix gss_auth kref leak in gss_alloc_msg error path
Other Cleanups and Improvements:
* A few other NFS/localio cleanups
* Various other delegation handling cleanups from Christoph
* Unify security_inode_listsecurity() calls
* Improvements to NFSv4 lease handling
* Clean up SUNRPC *_debug fields when CONFIG_SUNRPC_DEBUG is not set
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Merge tag 'nfs-for-7.0-1' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client updates from Anna Schumaker:
"New Features:
- Use an LRU list for returning unused delegations
- Introduce a KConfig option to disable NFS v4.0 and make NFS v4.1
the default
Bugfixes:
- NFS/localio:
- Handle short writes by retrying
- Prevent direct reclaim recursion into NFS via nfs_writepages
- Use GFP_NOIO and non-memreclaim workqueue in nfs_local_commit
- Remove -EAGAIN handling in nfs_local_doio()
- pNFS: fix a missing wake up while waiting on NFS_LAYOUT_DRAIN
- fs/nfs: Fix a readdir slow-start regression
- SUNRPC: fix gss_auth kref leak in gss_alloc_msg error path
Other cleanups and improvements:
- A few other NFS/localio cleanups
- Various other delegation handling cleanups from Christoph
- Unify security_inode_listsecurity() calls
- Improvements to NFSv4 lease handling
- Clean up SUNRPC *_debug fields when CONFIG_SUNRPC_DEBUG is not set"
* tag 'nfs-for-7.0-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (60 commits)
SUNRPC: fix gss_auth kref leak in gss_alloc_msg error path
nfs: nfs4proc: Convert comma to semicolon
SUNRPC: Change list definition method
sunrpc: rpc_debug and others are defined even if CONFIG_SUNRPC_DEBUG unset
NFSv4: limit lease period in nfs4_set_lease_period()
NFSv4: pass lease period in seconds to nfs4_set_lease_period()
nfs: unify security_inode_listsecurity() calls
fs/nfs: Fix readdir slow-start regression
pNFS: fix a missing wake up while waiting on NFS_LAYOUT_DRAIN
NFS: fix delayed delegation return handling
NFS: simplify error handling in nfs_end_delegation_return
NFS: fold nfs_abort_delegation_return into nfs_end_delegation_return
NFS: remove the delegation == NULL check in nfs_end_delegation_return
NFS: use bool for the issync argument to nfs_end_delegation_return
NFS: return void from ->return_delegation
NFS: return void from nfs4_inode_make_writeable
NFS: Merge CONFIG_NFS_V4_1 with CONFIG_NFS_V4
NFS: Add a way to disable NFS v4.0 via KConfig
NFS: Move sequence slot operations into minorversion operations
NFS: Pass a struct nfs_client to nfs4_init_sequence()
...
Maxime Chevallier says:
====================
net: phy_port: SFP modules representation and phy_port listing (part)
====================
Applying just the initial cleanup + fixes from the series.
Link: https://patch.msgid.link/20260205092317.755906-1-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
a PHY-driven phy_port contains a 'supported' field containing the
linkmodes available on this port. This is populated based on :
- The PHY's reported features
- The DT representation of the connector
- The PHY's attach_mdi() callback
As these different attrbution methods work in conjunction, the helper
phy_port_update_supported() recomputes the final 'supported' value based
on the populated mediums, linkmodes and pairs.
However this recompute wasn't correctly implemented, and added more
modes than necessary by or'ing the medium-specific modes to the existing
support. Let's fix this and properly filter the modes.
Fixes: 589e934d27 ("net: phy: Introduce PHY ports representation")
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Link: https://patch.msgid.link/20260205092317.755906-4-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We don't need to maintain a mediums bitfield, let's drop it and drop a
bogus check for empty mediums, as we already check it above.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Link: https://patch.msgid.link/20260205092317.755906-3-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
With the phy_port infrastructure came an ethernet-connector binding,
allowing to represent the MDI of a PHY in devicetree. This allows
specifying the mediums and pairs of a port.
Let's initialize the port's supported list based on what the PHY
reports, so that we can then filter it with what the connector allows
using.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Link: https://patch.msgid.link/20260205092317.755906-2-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
People keep removing generated files from .gitignore files even when the
files stay around. Please don't do that: just because the file is no
longer being generated doesn't make it magically go away, and doesn't
make it suddenly be something that should now not be ignored any more.
Fixes: dd2c6ec24f ("selftests/mm: remove virtual_address_range test")
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: SeongJae Park <sj@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Cleanup IRQ masking in the handling of completed report zones
commands (Niklas).
- Improve the handling of Thunderbolt attached devices to speed up
device removal (Henry).
- Several patches to generalize the existing max_sec quirks to
facilitates quirking the maximum command size of buggy drives, many
of which have recently showed up with the recent increase of the
default max_sectors block limit (Niklas).
- Cleanup the ahci-platform and sata dt-bindings schema (Rob,
Manivannan).
- Improve device node scan in the ahci-dwc driver (Krzysztof).
- Remove clang W=1 warnings with the ahci-imx and ahci-xgene drivers
(Krzysztof).
- Fix a long standing potential command starvation situation with
non-NCQ commands issued when NCQ commands are on-going (me).
- Limit max_sectors to 8191 on the INTEL SSDSC2KG480G8 SSD (Niklas).
- Remove Vesa Local Bus (VLB) support in the pata_legacy driver
(Ethan).
- Simple fixes in the pata_cypress (typo) and pata_ftide010 (timing)
drivers (Ethan, Linus W.)
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Merge tag 'ata-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux
Pull ATA updates from Damien Le Moal:
- Cleanup IRQ masking in the handling of completed report zones
commands (Niklas)
- Improve the handling of Thunderbolt attached devices to speed up
device removal (Henry)
- Several patches to generalize the existing max_sec quirks to
facilitates quirking the maximum command size of buggy drives, many
of which have recently showed up with the recent increase of the
default max_sectors block limit (Niklas)
- Cleanup the ahci-platform and sata dt-bindings schema (Rob,
Manivannan)
- Improve device node scan in the ahci-dwc driver (Krzysztof)
- Remove clang W=1 warnings with the ahci-imx and ahci-xgene drivers
(Krzysztof)
- Fix a long standing potential command starvation situation with
non-NCQ commands issued when NCQ commands are on-going (me)
- Limit max_sectors to 8191 on the INTEL SSDSC2KG480G8 SSD (Niklas)
- Remove Vesa Local Bus (VLB) support in the pata_legacy driver (Ethan)
- Simple fixes in the pata_cypress (typo) and pata_ftide010 (timing)
drivers (Ethan, Linus W)
* tag 'ata-6.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
ata: pata_ftide010: Fix some DMA timings
ata: pata_cypress: fix typo in error message
ata: pata_legacy: remove VLB support
ata: libata-core: Quirk INTEL SSDSC2KG480G8 max_sectors
dt-bindings: ata: sata: Document the graph port
ata: libata-scsi: avoid Non-NCQ command starvation
ata: libata-scsi: refactor ata_scsi_translate()
ata: ahci-xgene: Fix Wvoid-pointer-to-enum-cast warning
ata: ahci-imx: Fix Wvoid-pointer-to-enum-cast warning
ata: ahci-dwc: Simplify with scoped for each OF child loop
dt-bindings: ata: ahci-platform: Drop unnecessary select schema
ata: libata: Allow more quirks
ata: libata: Add libata.force parameter max_sec
ata: libata: Add support to parse equal sign in libata.force
ata: libata: Change libata.force to use the generic ATA_QUIRK_MAX_SEC quirk
ata: libata: Add ata_force_get_fe_for_dev() helper
ata: libata: Add ATA_QUIRK_MAX_SEC and convert all device quirks
ata: libata: avoid long timeouts on hot-unplugged SATA DAS
ata: libata-scsi: Remove superfluous local_irq_save()
Usual smallish cycle:
- Various code improvements in irdma, rtrs, qedr, ocrdma, irdma, rxe
- Small driver improvements and minor bug fixes to hns, mlx5, rxe, mana,
mlx5, irdma
- Robusness improvements in completion processing for EFA
- New query_port_speed() verb to move past limited IBA defined speed steps
- Support for SG_GAPS in rts and many other small improvements
- Rare list corruption fix in iwcm
- Better support different page sizes in rxe
- Device memory support for mana
- Direct bio vec to kernel MR for use by NFS-RDMA
- QP rate limiting for bnxt_re
- Remote triggerable NULL pointer crash in siw
- DMA-buf exporter support for RDMA mmaps like doorbells
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
"Usual smallish cycle. The NFS biovec work to push it down into RDMA
instead of indirecting through a scatterlist is pretty nice to see,
been talked about for a long time now.
- Various code improvements in irdma, rtrs, qedr, ocrdma, irdma, rxe
- Small driver improvements and minor bug fixes to hns, mlx5, rxe,
mana, mlx5, irdma
- Robusness improvements in completion processing for EFA
- New query_port_speed() verb to move past limited IBA defined speed
steps
- Support for SG_GAPS in rts and many other small improvements
- Rare list corruption fix in iwcm
- Better support different page sizes in rxe
- Device memory support for mana
- Direct bio vec to kernel MR for use by NFS-RDMA
- QP rate limiting for bnxt_re
- Remote triggerable NULL pointer crash in siw
- DMA-buf exporter support for RDMA mmaps like doorbells"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (66 commits)
RDMA/mlx5: Implement DMABUF export ops
RDMA/uverbs: Add DMABUF object type and operations
RDMA/uverbs: Support external FD uobjects
RDMA/siw: Fix potential NULL pointer dereference in header processing
RDMA/umad: Reject negative data_len in ib_umad_write
IB/core: Extend rate limit support for RC QPs
RDMA/mlx5: Support rate limit only for Raw Packet QP
RDMA/bnxt_re: Report QP rate limit in debugfs
RDMA/bnxt_re: Report packet pacing capabilities when querying device
RDMA/bnxt_re: Add support for QP rate limiting
MAINTAINERS: Drop RDMA files from Hyper-V section
RDMA/uverbs: Add __GFP_NOWARN to ib_uverbs_unmarshall_recv() kmalloc
svcrdma: use bvec-based RDMA read/write API
RDMA/core: add rdma_rw_max_sge() helper for SQ sizing
RDMA/core: add MR support for bvec-based RDMA operations
RDMA/core: use IOVA-based DMA mapping for bvec RDMA operations
RDMA/core: add bio_vec based RDMA read/write API
RDMA/irdma: Use kvzalloc for paged memory DMA address array
RDMA/rxe: Fix race condition in QP timer handlers
RDMA/mana_ib: Add device‑memory support
...
- A set of commits that introduces cxl_memdev_attach and pave way for
soft reserved handling, type2 accelerator enabling, and LSA 2.0
enabling. All these series require the endpoint driver to settle
before continuing the memdev driver probe.
dax/hmem, e820, resource: Defer Soft Reserved insertion until hmem is ready
cxl/mem: Introduce cxl_memdev_attach for CXL-dependent operation
cxl/mem: Drop @host argument to devm_cxl_add_memdev()
cxl/mem: Convert devm_cxl_add_memdev() to scope-based-cleanup
cxl/port: Arrange for always synchronous endpoint attach
cxl/mem: Arrange for always-synchronous memdev attach
cxl/mem: Fix devm_cxl_memdev_edac_release() confusion
- A set to address CXL port error protocol handling and reporting. The
large patch series was split into 3 parts. Part 1 and 2 are included
here with part 3 coming later. Part 1 consists of a series of code
refactoring to PCI AER sub-system that addresses CXL and also CXL
RAS code to prepare for port error handling. Part 2 refactors the
CXL code to move management of component registers to cxl_port
objects to allow all CXL AER errors to be handled through the
cxl_port hierarchy.
Part 2:
cxl/port: Move endpoint component register management to cxl_port
cxl/port: Map Port RAS registers
cxl/port: Move dport RAS setup to dport add time
cxl/port: Move dport probe operations to a driver event
cxl/port: Move decoder setup before dport creation
cxl/port: Cleanup dport removal with a devres group
cxl/port: Reduce number of @dport variables in cxl_port_add_dport()
cxl/port: Cleanup handling of the nr_dports 0 -> 1 transition
Part 1:
cxl: Update RAS handler interfaces to also support CXL Ports
cxl/mem: Clarify @host for devm_cxl_add_nvdimm()
PCI/AER: Update struct aer_err_info with kernel-doc formatting
PCI/AER: Report CXL or PCIe bus type in AER trace logging
PCI/AER: Use guard() in cxl_rch_handle_error_iter()
PCI/AER: Move CXL RCH error handling to aer_cxl_rch.c
PCI/AER: Update is_internal_error() to be non-static is_aer_internal_error()
PCI/AER: Export pci_aer_unmask_internal_errors()
cxl/pci: Move CXL driver's RCH error handling into core/ras_rch.c
PCI/AER: Replace PCIEAER_CXL symbol with CXL_RAS
cxl/pci: Remove CXL VH handling in CONFIG_PCIEAER_CXL conditional blocks from core/pci.c
PCI: Replace cxl_error_is_native() with pcie_aer_is_native()
cxl/pci: Remove unnecessary CXL RCH handling helper functions
cxl/pci: Remove unnecessary CXL Endpoint handling helper functions
PCI: Introduce pcie_is_cxl()
PCI: Update CXL DVSEC definitions
PCI: Move CXL DVSEC definitions into uapi/linux/pci_regs.h
- A set of patches to provide AMD Zen5 platform address translation for
CXL using ACPI PRMT. Set includes a conventions document to explain
why this is needed and how it's implemented.
cxl: Disable HPA/SPA translation handlers for Normalized Addressing
cxl/region: Factor out code into cxl_region_setup_poison()
cxl/atl: Lock decoders that need address translation
cxl: Enable AMD Zen5 address translation using ACPI PRMT
cxl/acpi: Prepare use of EFI runtime services
cxl: Introduce callback for HPA address ranges translation
cxl/region: Use region data to get the root decoder
cxl/region: Add @hpa_range argument to function cxl_calc_interleave_pos()
cxl/region: Separate region parameter setup and region construction
cxl: Simplify cxl_root_ops allocation and handling
cxl/region: Store HPA range in struct cxl_region
cxl/region: Store root decoder in struct cxl_region
cxl/region: Rename misleading variable name @hpa to @hpa_range
Documentation/driver-api/cxl: ACPI PRM Address Translation Support and AMD Zen5 enablement
cxl, doc: Moving conventions in separate files
cxl, doc: Remove isonum.txt inclusion
- A set of misc CXL patches of fixes, cleanups, and updates. Including
CXL address translation for unaligned MOD3 regions.
cxl: Fix premature commit_end increment on decoder commit failure
cxl/region: Use do_div() for 64-bit modulo operation
cxl/region: Translate HPA to DPA and memdev in unaligned regions
cxl/region: Translate DPA->HPA in unaligned MOD3 regions
cxl/core: Fix cxl_dport debugfs EINJ entries
cxl/acpi: Remove cxl_acpi_set_cache_size()
cxl/hdm: Fix newline character in dev_err() messages
cxl/pci: Remove outdated FIXME comment and BUILD_BUG_ON
Documentation/driver-api/cxl: device hotplug section
Documentation/driver-api/cxl: BIOS/EFI expectation update
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Merge tag 'cxl-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull CXL updates from Dave Jiang:
- Introduce cxl_memdev_attach and pave way for soft reserved handling,
type2 accelerator enabling, and LSA 2.0 enabling. All these series
require the endpoint driver to settle before continuing the memdev
driver probe.
- Address CXL port error protocol handling and reporting.
The large patch series was split into three parts. The first two
parts are included here with the final part coming later.
The first part consists of a series of code refactoring to PCI AER
sub-system that addresses CXL and also CXL RAS code to prepare for
port error handling.
The second part refactors the CXL code to move management of
component registers to cxl_port objects to allow all CXL AER errors
to be handled through the cxl_port hierarchy.
- Provide AMD Zen5 platform address translation for CXL using ACPI
PRMT. This includes a conventions document to explain why this is
needed and how it's implemented.
- Misc CXL patches of fixes, cleanups, and updates. Including CXL
address translation for unaligned MOD3 regions.
[ TLA service: CXL is "Compute Express Link" ]
* tag 'cxl-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (59 commits)
cxl: Disable HPA/SPA translation handlers for Normalized Addressing
cxl/region: Factor out code into cxl_region_setup_poison()
cxl/atl: Lock decoders that need address translation
cxl: Enable AMD Zen5 address translation using ACPI PRMT
cxl/acpi: Prepare use of EFI runtime services
cxl: Introduce callback for HPA address ranges translation
cxl/region: Use region data to get the root decoder
cxl/region: Add @hpa_range argument to function cxl_calc_interleave_pos()
cxl/region: Separate region parameter setup and region construction
cxl: Simplify cxl_root_ops allocation and handling
cxl/region: Store HPA range in struct cxl_region
cxl/region: Store root decoder in struct cxl_region
cxl/region: Rename misleading variable name @hpa to @hpa_range
Documentation/driver-api/cxl: ACPI PRM Address Translation Support and AMD Zen5 enablement
cxl, doc: Moving conventions in separate files
cxl, doc: Remove isonum.txt inclusion
cxl/port: Unify endpoint and switch port lookup
cxl/port: Move endpoint component register management to cxl_port
cxl/port: Map Port RAS registers
cxl/port: Move dport RAS setup to dport add time
...
Wa_16018737384 is one of the rare cases where the hardware teams mark a
workaround as "driver change required" rather than "permanent/temporary
workaround" in the internal workaround database, signifying that the
implementation details of the workaround should just be considered
standard programming instructions on all platforms going forward. Cases
like this are the only time that using XE_RTP_END_VERSION_UNDEFINED as an
upper bound for a workaround's IP range is warranted and correct.
However in this specific case, the register bit in question (0xE4F0[1])
simply no longer exists in hardware from Xe3 onward. Trying to write to
that bit on Xe3 or Xe3p platforms is harmless and just doesn't have any
effect, but it's possible that the register bit could get repurposed to
control something else down the road on future platforms. To avoid any
surprises in the future we should replace the unbounded upper bound in
our RTP table with a value that accurately reflects that Wa_16018737384
can only apply to Xe2 platforms.
Bspec: 56849
Reviewed-by: Dnyaneshwar Bhadane <dnyaneshwar.bhadane@intel.com>
Link: https://patch.msgid.link/20260211234735.620087-2-matthew.d.roper@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
- Update outdated mdev comment referencing the renamed
mdev_type_add() function. (Julia Lawall)
- Introduce selftest support for IOMMU mapping of PCI MMIO BARs.
(Alex Mastro)
- Relax selftest assertion relative to differences in huge page
handling between legacy (v1) TYPE1 IOMMU mapping behavior and
the compatibility mode supported by IOMMUFD. (David Matlack)
- Reintroduce memory poison handling support for non-struct-page-
backed memory in the nvgrace-gpu variant driver. (Ankit Agrawal)
- Replace dma_buf_phys_vec with phys_vec to avoid duplicate
structure and semantics. (Leon Romanovsky)
- Add missing upstream bridge locking across PCI function reset,
resolving an assertion failure when secondary bus reset is used
to provide that reset. (Anthony Pighin)
- Fixes to hisi_acc vfio-pci variant driver to resolve corner case
issues related to resets, repeated migration, and error injection
scenarios. (Longfang Liu, Weili Qian)
- Restrict vfio selftest builds to arm64 and x86_64, resolving
compiler warnings on 32-bit archs. (Ted Logan)
- Un-deprecate the fsl-mc vfio bus driver as a new maintainer has
stepped up. (Ioana Ciornei)
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Merge tag 'vfio-v7.0-rc1' of https://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson:
"A small cycle with the bulk in selftests and reintroducing poison
handling in the nvgrace-gpu driver. The rest are fixes, cleanups, and
some dmabuf structure consolidation.
- Update outdated mdev comment referencing the renamed
mdev_type_add() function (Julia Lawall)
- Introduce selftest support for IOMMU mapping of PCI MMIO BARs (Alex
Mastro)
- Relax selftest assertion relative to differences in huge page
handling between legacy (v1) TYPE1 IOMMU mapping behavior and the
compatibility mode supported by IOMMUFD (David Matlack)
- Reintroduce memory poison handling support for non-struct-page-
backed memory in the nvgrace-gpu variant driver (Ankit Agrawal)
- Replace dma_buf_phys_vec with phys_vec to avoid duplicate structure
and semantics (Leon Romanovsky)
- Add missing upstream bridge locking across PCI function reset,
resolving an assertion failure when secondary bus reset is used to
provide that reset (Anthony Pighin)
- Fixes to hisi_acc vfio-pci variant driver to resolve corner case
issues related to resets, repeated migration, and error injection
scenarios (Longfang Liu, Weili Qian)
- Restrict vfio selftest builds to arm64 and x86_64, resolving
compiler warnings on 32-bit archs (Ted Logan)
- Un-deprecate the fsl-mc vfio bus driver as a new maintainer has
stepped up (Ioana Ciornei)"
* tag 'vfio-v7.0-rc1' of https://github.com/awilliam/linux-vfio:
vfio/fsl-mc: add myself as maintainer
vfio: selftests: only build tests on arm64 and x86_64
hisi_acc_vfio_pci: fix the queue parameter anomaly issue
hisi_acc_vfio_pci: resolve duplicate migration states
hisi_acc_vfio_pci: update status after RAS error
hisi_acc_vfio_pci: fix VF reset timeout issue
vfio/pci: Lock upstream bridge for vfio_pci_core_disable()
types: reuse common phys_vec type instead of DMABUF open‑coded variant
vfio/nvgrace-gpu: register device memory for poison handling
mm: add stubs for PFNMAP memory failure registration functions
vfio: selftests: Drop IOMMU mapping size assertions for VFIO_TYPE1_IOMMU
vfio: selftests: Add vfio_dma_mapping_mmio_test
vfio: selftests: Align BAR mmaps for efficient IOMMU mapping
vfio: selftests: Centralize IOMMU mode name definitions
vfio/mdev: update outdated comment
Customer reported data corruption in some of their files. It turned
out the client would end up calling cacheless IO functions while
having RHW lease, bypassing the pagecache and then leaving gaps in the
file while writing to it. It was related to concurrent opens changing
the lease state while having writes in flight. Lease breaks and
re-opens due to reconnect could also cause same issue.
Fix this by serialising the lease updates with
cifsInodeInfo::open_file_lock. When handling oplock break, make sure
to use the downgraded oplock value rather than one in cifsInodeinfo as
it could be changed concurrently.
Reported-by: Frank Sorenson <sorenson@redhat.com>
Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
Reviewed-by: David Howells <dhowells@redhat.com>
Cc: linux-cifs@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
In preparation for making the kmalloc family of allocators type aware, we
need to make sure that the returned type from the allocation matches the
type of the variable being assigned. (Before, the allocator would always
return "void *", which can be implicitly cast to any pointer type.)
The assigned type is "const struct cpumask **", but the returned type,
while matching, is not const qualified. To get them exactly matching,
just use the dereferenced pointer for the sizeof().
Link: https://lkml.kernel.org/r/20260206222010.work.349-kees@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
Cc: Wangyang Guo <wangyang.guo@intel.com>
Cc: Thomas Gleixner <tglx@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
The following pr_warn() provides detailed error and location information,
WARN_ON(err) adds no additional debugging value, so remove the redundant
WARN_ON() call.
Link: https://lkml.kernel.org/r/20260212111146.210086-3-ranxiaokai627@163.com
Signed-off-by: Ran Xiaokai <ran.xiaokai@zte.com.cn>
Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Alexander Graf <graf@amazon.com>
Cc: Mike Rapoport <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Patch series "two fixes in kho_populate()", v3.
This patch (of 2):
kho_populate() returns without calling early_memunmap() on success path,
this will cause early ioremap virtual address space leak.
Link: https://lkml.kernel.org/r/20260212111146.210086-1-ranxiaokai627@163.com
Link: https://lkml.kernel.org/r/20260212111146.210086-2-ranxiaokai627@163.com
Fixes: b50634c5e8 ("kho: cleanup error handling in kho_populate()")
Signed-off-by: Ran Xiaokai <ran.xiaokai@zte.com.cn>
Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
Cc: Alexander Graf <graf@amazon.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Implement all member functions of x86_page_ops strictly following the
logic of aarch64_page_ops.
This includes full support for SPARSEMEM and standard page translation
functions.
This fixes compatibility with 'lx-' commands on x86_64, preventing
AttributeErrors when using lx-pfn_to_page and others.
Link: https://lkml.kernel.org/r/20260202034241.649268-1-hsj0512@snu.ac.kr
Signed-off-by: Seongjun Hong <hsj0512@snu.ac.kr>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
objpool uses struct objpool_head to store metadata information, and its
cpu_slots member points to an array of pointers that store the addresses
of the percpu ring arrays. However, the memory size allocated during the
initialization of cpu_slots is nr_cpu_ids * sizeof(struct objpool_slot).
On a 64-bit machine, the size of struct objpool_slot is 16 bytes, which is
twice the size of the actual pointer required, and the extra memory is
never be used, resulting in a waste of memory. Therefore, the memory size
required for cpu_slots needs to be corrected.
Link: https://lkml.kernel.org/r/20260202132846.68257-1-zhouwenhao7600@gmail.com
Fixes: b4edb8d2d4 ("lib: objpool added: ring-array based lockless MPMC")
Signed-off-by: zhouwenhao <zhouwenhao7600@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Matt Wu <wuqiang.matt@bytedance.com>
Cc: wuqiang.matt <wuqiang.matt@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/memfd: use IPC semaphore instead of SIGSTOP/SIGCONT
In order to synchronize new processes to test inheritance of memfd_noexec
sysctl, memfd_test sets up the sysctl with a value before creating the new
process. The new process then sends itself a SIGSTOP in order to wait for
the parent to flip the sysctl value and send a SIGCONT signal.
This would work as intended if it wasn't the fact that the new process is
being created with CLONE_NEWPID, which creates a new PID namespace and the
new process has PID 1 in this namespace. There're restrictions on sending
signals to PID 1 and, although it's relaxed for other than root PID
namespace, it's biting us here. In this specific case the SIGSTOP sent by
the new process is ignored (no error to kill() is returned) and it never
stops its execution. This is usually not noticiable as the parent usually
manages to set the new sysctl value before the child has a chance to run
and the test succeeds. But if you run the test in a loop, it eventually
reproduces:
while [ 1 ]; do ./memfd_test >log 2>&1 || break; done; cat log
So this patch replaces the SIGSTOP/SIGCONT synchronization with IPC
semaphore.
Link: https://lkml.kernel.org/r/a7776389-b3d6-4b18-b438-0b0e3ed1fd3b@work
Fixes: 6469b66e3f ("selftests: improve vm.memfd_noexec sysctl tests")
Signed-off-by: Aristeu Rozanski <aris@redhat.com>
Cc: Aleksa Sarai <cyphar@cyphar.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: liuye <liuye@kylinos.cn>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
The accounting tool was modified for the original ABI using a custom
'timespec64' type in linux/taskstats.h, which I changed to use the regular
__kernel_timespec type, causing a build failure:
getdelays.c:202:45: warning: 'struct timespec64' declared inside parameter list will not be visible outside of this definition or declaration
202 | static const char *format_timespec64(struct timespec64 *ts)
| ^~~~~~~~~~
Change the tool to match the updated header.
Link: https://lkml.kernel.org/r/20260210103427.2984963-1-arnd@kernel.org
Fixes: 503efe850c ("delayacct: add timestamp of delay max")
Fixes: f06e31eef4c1 ("delayacct: fix uapi timespec64 definition")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/r/202602091611.lxgINqXp-lkp@intel.com/
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Several subsystems (slub, shmem, ttm, etc.) use page->private but don't
clear it before freeing pages. When these pages are later allocated as
high-order pages and split via split_page(), tail pages retain stale
page->private values.
This causes a use-after-free in the swap subsystem. The swap code uses
page->private to track swap count continuations, assuming freshly
allocated pages have page->private == 0. When stale values are present,
swap_count_continued() incorrectly assumes the continuation list is valid
and iterates over uninitialized page->lru containing LIST_POISON values,
causing a crash:
KASAN: maybe wild-memory-access in range [0xdead000000000100-0xdead000000000107]
RIP: 0010:__do_sys_swapoff+0x1151/0x1860
Fix this by clearing page->private in free_pages_prepare(), ensuring all
freed pages have clean state regardless of previous use.
Link: https://lkml.kernel.org/r/20260207173615.146159-1-mikhail.v.gavrilov@gmail.com
Fixes: 3b8000ae18 ("mm/vmalloc: huge vmalloc backing pages should be split rather than compound")
Signed-off-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Suggested-by: Zi Yan <ziy@nvidia.com>
Acked-by: Zi Yan <ziy@nvidia.com>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Brendan Jackman <jackmanb@google.com>
Cc: Chris Li <chrisl@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kairui Song <ryncsn@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Usual driver updates (qla2xxx, mpi3mr, mpt3sas, ufs) plus assorted
cleanups and fixes. The biggest core change is the massive code
motion in the sd driver to remove forward declarations and the most
significant change is to enumify the queuecommand return.
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"Usual driver updates (qla2xxx, mpi3mr, mpt3sas, ufs) plus assorted
cleanups and fixes.
The biggest core change is the massive code motion in the sd driver to
remove forward declarations and the most significant change is to
enumify the queuecommand return"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (78 commits)
scsi: csiostor: Fix dereference of null pointer rn
scsi: buslogic: Reduce stack usage
scsi: ufs: host: mediatek: Require CONFIG_PM
scsi: ufs: mediatek: Fix page faults in ufs_mtk_clk_scale() trace event
scsi: smartpqi: Fix memory leak in pqi_report_phys_luns()
scsi: mpi3mr: Make driver probing asynchronous
scsi: ufs: core: Flush exception handling work when RPM level is zero
scsi: efct: Use IRQF_ONESHOT and default primary handler
scsi: ufs: core: Use a host-wide tagset in SDB mode
scsi: qla2xxx: target: Add WQ_PERCPU to alloc_workqueue() users
scsi: qla2xxx: Add WQ_PERCPU to alloc_workqueue() users
scsi: qla4xxx: Add WQ_PERCPU to alloc_workqueue() users
scsi: mpi3mr: Driver version update to 8.17.0.3.50
scsi: mpi3mr: Fixed the W=1 compilation warning
scsi: mpi3mr: Record and report controller firmware faults
scsi: mpi3mr: Update MPI Headers to revision 39
scsi: mpi3mr: Use negotiated link rate from DevicePage0
scsi: mpi3mr: Avoid redundant diag-fault resets
scsi: mpi3mr: Rename log data save helper to reflect threaded/BH context
scsi: mpi3mr: Add module parameter to control threaded IRQ polling
...
This patch adds a new testcase to validate memory failure handling for
dirty pagecache. This performs similar operations as clean pagecaches
except fsync() is not used to keep pages dirty.
This test helps ensure that memory failure handling for dirty pagecache
works correctly, including proper SIGBUS delivery, page isolation, and
recovery paths.
Link: https://lkml.kernel.org/r/20260206031639.2707102-4-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: kernel test robot <lkp@intel.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This patch adds a new testcase to validate memory failure handling for
clean pagecache. This test performs similar operations as anonymous pages
except allocating memory using mmap() with a file fd.
This test helps ensure that memory failure handling for clean pagecache
works correctly, including unchanged page content, page isolation, and
recovery paths.
Link: https://lkml.kernel.org/r/20260206031639.2707102-3-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202601221142.mDWA1ucw-lkp@intel.com/
Cc: David Hildenbrand <david@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Patch series "selftests/mm: add memory failure selftests", v4.
Introduce selftests to validate the functionality of memory failure.
These tests help ensure that memory failure handling for anonymous pages,
pagecaches pages works correctly, including proper SIGBUS delivery to user
processes, page isolation, and recovery paths.
Currently madvise syscall is used to inject memory failures. And only
anonymous pages and pagecaches are tested. More test scenarios, e.g.
hugetlb, shmem, thp, will be added. Also more memory failure injecting
methods will be supported, e.g. APEI Error INJection, if required.
This patch (of 3):
This patch adds a new kselftest to validate memory failure handling for
anonymous pages. The test performs the following operations:
1. Allocates anonymous pages using mmap().
2. Injects memory failure via madvise syscall.
3. Verifies expected error handling behavior.
4. Unpoison memory.
This test helps ensure that memory failure handling for anonymous pages
works correctly, including proper SIGBUS delivery to user processes, page
isolation and recovery paths.
Link: https://lkml.kernel.org/r/20260206031639.2707102-1-linmiaohe@huawei.com
Link: https://lkml.kernel.org/r/20260206031639.2707102-2-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: kernel test robot <lkp@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Similar to folio_referenced_one(), we can apply batched unmapping for file
large folios to optimize the performance of file folios reclamation.
Barry previously implemented batched unmapping for lazyfree anonymous
large folios[1] and did not further optimize anonymous large folios or
file-backed large folios at that stage. As for file-backed large folios,
the batched unmapping support is relatively straightforward, as we only
need to clear the consecutive (present) PTE entries for file-backed large
folios.
Note that it's not ready to support batched unmapping for uffd case, so
let's still fallback to per-page unmapping for the uffd case.
Performance testing:
Allocate 10G clean file-backed folios by mmap() in a memory cgroup, and
try to reclaim 8G file-backed folios via the memory.reclaim interface. I
can observe 75% performance improvement on my Arm64 32-core server (and
50%+ improvement on my X86 machine) with this patch.
W/o patch:
real 0m1.018s
user 0m0.000s
sys 0m1.018s
W/ patch:
real 0m0.249s
user 0m0.000s
sys 0m0.249s
[1] https://lore.kernel.org/all/20250214093015.51024-4-21cnbao@gmail.com/T/#u
Link: https://lkml.kernel.org/r/b53a16f67c93a3fe65e78092069ad135edf00eff.1770645603.git.baolin.wang@linux.alibaba.com
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Acked-by: Barry Song <baohua@kernel.org>
Reviewed-by: Harry Yoo <harry.yoo@oracle.com>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Jann Horn <jannh@google.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
