These are the first few patches in the Scope-based Resource Management
series that introduce the infrastructure but not any conversions as of
yet.
Adding the infrastructure now allows multiple people to start using them.
Of note is that Sparse will need some work since it doesn't yet
understand this attribute and might have decl-after-stmt issues -- but I
think that's being worked on.
-----BEGIN PGP SIGNATURE-----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=adZ8
-----END PGP SIGNATURE-----
Merge tag 'core_guards_for_6.5_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue
Pull scope-based resource management infrastructure from Peter Zijlstra:
"These are the first few patches in the Scope-based Resource Management
series that introduce the infrastructure but not any conversions as of
yet.
Adding the infrastructure now allows multiple people to start using
them.
Of note is that Sparse will need some work since it doesn't yet
understand this attribute and might have decl-after-stmt issues"
* tag 'core_guards_for_6.5_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue:
kbuild: Drop -Wdeclaration-after-statement
locking: Introduce __cleanup() based infrastructure
apparmor: Free up __cleanup() name
dmaengine: ioat: Free up __cleanup() name
- Extend KCSAN support to 32-bit and BookE. Add some KCSAN annotations.
- Make ELFv2 ABI the default for 64-bit big-endian kernel builds, and use
the -mprofile-kernel option (kernel specific ftrace ABI) for big endian
ELFv2 kernels.
- Add initial Dynamic Execution Control Register (DEXCR) support, and allow
the ROP protection instructions to be used on Power 10.
- Various other small features and fixes.
Thanks to: Aditya Gupta, Aneesh Kumar K.V, Benjamin Gray, Brian King,
Christophe Leroy, Colin Ian King, Dmitry Torokhov, Gaurav Batra, Jean Delvare,
Joel Stanley, Marco Elver, Masahiro Yamada, Nageswara R Sastry, Nathan
Chancellor, Naveen N Rao, Nayna Jain, Nicholas Piggin, Paul Gortmaker, Randy
Dunlap, Rob Herring, Rohan McLure, Russell Currey, Sachin Sant, Timothy
Pearson, Tom Rix, Uwe Kleine-König.
-----BEGIN PGP SIGNATURE-----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=ssit
-----END PGP SIGNATURE-----
Merge tag 'powerpc-6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
- Extend KCSAN support to 32-bit and BookE. Add some KCSAN annotations
- Make ELFv2 ABI the default for 64-bit big-endian kernel builds, and
use the -mprofile-kernel option (kernel specific ftrace ABI) for big
endian ELFv2 kernels
- Add initial Dynamic Execution Control Register (DEXCR) support, and
allow the ROP protection instructions to be used on Power 10
- Various other small features and fixes
Thanks to Aditya Gupta, Aneesh Kumar K.V, Benjamin Gray, Brian King,
Christophe Leroy, Colin Ian King, Dmitry Torokhov, Gaurav Batra, Jean
Delvare, Joel Stanley, Marco Elver, Masahiro Yamada, Nageswara R Sastry,
Nathan Chancellor, Naveen N Rao, Nayna Jain, Nicholas Piggin, Paul
Gortmaker, Randy Dunlap, Rob Herring, Rohan McLure, Russell Currey,
Sachin Sant, Timothy Pearson, Tom Rix, and Uwe Kleine-König.
* tag 'powerpc-6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (76 commits)
powerpc: remove checks for binutils older than 2.25
powerpc: Fail build if using recordmcount with binutils v2.37
powerpc/iommu: TCEs are incorrectly manipulated with DLPAR add/remove of memory
powerpc/iommu: Only build sPAPR access functions on pSeries
powerpc: powernv: Annotate data races in opal events
powerpc: Mark writes registering ipi to host cpu through kvm and polling
powerpc: Annotate accesses to ipi message flags
powerpc: powernv: Fix KCSAN datarace warnings on idle_state contention
powerpc: Mark [h]ssr_valid accesses in check_return_regs_valid
powerpc: qspinlock: Enforce qnode writes prior to publishing to queue
powerpc: qspinlock: Mark accesses to qnode lock checks
powerpc/powernv/pci: Remove last IODA1 defines
powerpc/powernv/pci: Remove MVE code
powerpc/powernv/pci: Remove ioda1 support
powerpc: 52xx: Make immr_id DT match tables static
powerpc: mpc512x: Remove open coded "ranges" parsing
powerpc: fsl_soc: Use of_range_to_resource() for "ranges" parsing
powerpc: fsl: Use of_property_read_reg() to parse "reg"
powerpc: fsl_rio: Use of_range_to_resource() for "ranges" parsing
macintosh: Use of_property_read_reg() to parse "reg"
...
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEe7vIQRWZI0iWSE3xu+CwddJFiJoFAmSZtjsACgkQu+CwddJF
iJqCTwf/XVhmAD7zMOj6g1aak5oHNZDRG5jufM5UNXmiWjCWT3w4DpltrJkz0PPm
mg3Ac5fjNUqesZ1SGtUbvoc363smroBrRudGEFrsUhqBcpR+S4fSneoDk+xqMypf
VLXP/8kJlFEBGMiR7ouAWnR4+u6JgY4E8E8JIPNzao5KE/L1lD83nY+Usjc/01ek
oqMyYVFRfncsGjGJXc5fOOTTCj768mRroF0sLmEegIonnwQkSHE7HWJ/nyaVraDV
bomnTIgMdVIDqharin08ZPIM7qBIWM09Uifaf0lIs6fIA94pQP+5Ko3mum2P/S+U
ON/qviSrlNgRXoHPJ3hvPHdfEU9cSg==
=1d0v
-----END PGP SIGNATURE-----
Merge tag 'slab-for-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab updates from Vlastimil Babka:
- SLAB deprecation:
Following the discussion at LSF/MM 2023 [1] and no objections, the
SLAB allocator is deprecated by renaming the config option (to make
its users notice) to CONFIG_SLAB_DEPRECATED with updated help text.
SLUB should be used instead. Existing defconfigs with CONFIG_SLAB are
also updated.
- SLAB_NO_MERGE kmem_cache flag (Jesper Dangaard Brouer):
There are (very limited) cases where kmem_cache merging is
undesirable, and existing ways to prevent it are hacky. Introduce a
new flag to do that cleanly and convert the existing hacky users.
Btrfs plans to use this for debug kernel builds (that use case is
always fine), networking for performance reasons (that should be very
rare).
- Replace the usage of weak PRNGs (David Keisar Schmidt):
In addition to using stronger RNGs for the security related features,
the code is a bit cleaner.
- Misc code cleanups (SeongJae Parki, Xiongwei Song, Zhen Lei, and
zhaoxinchao)
Link: https://lwn.net/Articles/932201/ [1]
* tag 'slab-for-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
mm/slab_common: use SLAB_NO_MERGE instead of negative refcount
mm/slab: break up RCU readers on SLAB_TYPESAFE_BY_RCU example code
mm/slab: add a missing semicolon on SLAB_TYPESAFE_BY_RCU example code
mm/slab_common: reduce an if statement in create_cache()
mm/slab: introduce kmem_cache flag SLAB_NO_MERGE
mm/slab: rename CONFIG_SLAB to CONFIG_SLAB_DEPRECATED
mm/slab: remove HAVE_HARDENED_USERCOPY_ALLOCATOR
mm/slab_common: Replace invocation of weak PRNG
mm/slab: Replace invocation of weak PRNG
slub: Don't read nr_slabs and total_objects directly
slub: Remove slabs_node() function
slub: Remove CONFIG_SMP defined check
slub: Put objects_show() into CONFIG_SLUB_DEBUG enabled block
slub: Correct the error code when slab_kset is NULL
mm/slab: correct return values in comment for _kmem_cache_create()
The changes queued up for v6.5-rc1 for sysctl are in line with
prior efforts to stop usage of deprecated routines which incur
recursion and also make it hard to remove the empty array element
in each sysctl array declaration. The most difficult user to modify
was parport which required a bit of re-thinking of how to declare shared
sysctls there, Joel Granados has stepped up to the plate to do most of
this work and eventual removal of register_sysctl_table(). That work
ended up saving us about 1465 bytes according to bloat-o-meter. Since
we gained a few bloat-o-meter karma points I moved two rather small
sysctl arrays from kernel/sysctl.c leaving us only two more sysctl
arrays to move left.
Most changes have been tested on linux-next for about a month. The last
straggler patches are a minor parport fix, changes to the sysctl
kernel selftest so to verify correctness and prevent regressions for
the future change he made to provide an alternative solution for the
special sysctl mount point target which was using the now deprecated
sysctl child element.
This is all prep work to now finally be able to remove the empty
array element in all sysctl declarations / registrations which is
expected to save us a bit of bytes all over the kernel. That work
will be tested early after v6.5-rc1 is out.
-----BEGIN PGP SIGNATURE-----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=sXUU
-----END PGP SIGNATURE-----
Merge tag 'v6.5-rc1-sysctl-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux
Pull sysctl updates from Luis Chamberlain:
"The changes for sysctl are in line with prior efforts to stop usage of
deprecated routines which incur recursion and also make it hard to
remove the empty array element in each sysctl array declaration.
The most difficult user to modify was parport which required a bit of
re-thinking of how to declare shared sysctls there, Joel Granados has
stepped up to the plate to do most of this work and eventual removal
of register_sysctl_table(). That work ended up saving us about 1465
bytes according to bloat-o-meter. Since we gained a few bloat-o-meter
karma points I moved two rather small sysctl arrays from
kernel/sysctl.c leaving us only two more sysctl arrays to move left.
Most changes have been tested on linux-next for about a month. The
last straggler patches are a minor parport fix, changes to the sysctl
kernel selftest so to verify correctness and prevent regressions for
the future change he made to provide an alternative solution for the
special sysctl mount point target which was using the now deprecated
sysctl child element.
This is all prep work to now finally be able to remove the empty array
element in all sysctl declarations / registrations which is expected
to save us a bit of bytes all over the kernel. That work will be
tested early after v6.5-rc1 is out"
* tag 'v6.5-rc1-sysctl-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux:
sysctl: replace child with an enumeration
sysctl: Remove debugging dump_stack
test_sysclt: Test for registering a mount point
test_sysctl: Add an option to prevent test skip
test_sysctl: Add an unregister sysctl test
test_sysctl: Group node sysctl test under one func
test_sysctl: Fix test metadata getters
parport: plug a sysctl register leak
sysctl: move security keys sysctl registration to its own file
sysctl: move umh sysctl registration to its own file
signal: move show_unhandled_signals sysctl to its own file
sysctl: remove empty dev table
sysctl: Remove register_sysctl_table
sysctl: Refactor base paths registrations
sysctl: stop exporting register_sysctl_table
parport: Removed sysctl related defines
parport: Remove register_sysctl_table from parport_default_proc_register
parport: Remove register_sysctl_table from parport_device_proc_register
parport: Remove register_sysctl_table from parport_proc_register
parport: Move magic number "15" to a define
- Yosry has also eliminated cgroup's atomic rstat flushing.
- Nhat Pham adds the new cachestat() syscall. It provides userspace
with the ability to query pagecache status - a similar concept to
mincore() but more powerful and with improved usability.
- Mel Gorman provides more optimizations for compaction, reducing the
prevalence of page rescanning.
- Lorenzo Stoakes has done some maintanance work on the get_user_pages()
interface.
- Liam Howlett continues with cleanups and maintenance work to the maple
tree code. Peng Zhang also does some work on maple tree.
- Johannes Weiner has done some cleanup work on the compaction code.
- David Hildenbrand has contributed additional selftests for
get_user_pages().
- Thomas Gleixner has contributed some maintenance and optimization work
for the vmalloc code.
- Baolin Wang has provided some compaction cleanups,
- SeongJae Park continues maintenance work on the DAMON code.
- Huang Ying has done some maintenance on the swap code's usage of
device refcounting.
- Christoph Hellwig has some cleanups for the filemap/directio code.
- Ryan Roberts provides two patch series which yield some
rationalization of the kernel's access to pte entries - use the provided
APIs rather than open-coding accesses.
- Lorenzo Stoakes has some fixes to the interaction between pagecache
and directio access to file mappings.
- John Hubbard has a series of fixes to the MM selftesting code.
- ZhangPeng continues the folio conversion campaign.
- Hugh Dickins has been working on the pagetable handling code, mainly
with a view to reducing the load on the mmap_lock.
- Catalin Marinas has reduced the arm64 kmalloc() minimum alignment from
128 to 8.
- Domenico Cerasuolo has improved the zswap reclaim mechanism by
reorganizing the LRU management.
- Matthew Wilcox provides some fixups to make gfs2 work better with the
buffer_head code.
- Vishal Moola also has done some folio conversion work.
- Matthew Wilcox has removed the remnants of the pagevec code - their
functionality is migrated over to struct folio_batch.
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZJejewAKCRDdBJ7gKXxA
joggAPwKMfT9lvDBEUnJagY7dbDPky1cSYZdJKxxM2cApGa42gEA6Cl8HRAWqSOh
J0qXCzqaaN8+BuEyLGDVPaXur9KirwY=
=B7yQ
-----END PGP SIGNATURE-----
Merge tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull mm updates from Andrew Morton:
- Yosry Ahmed brought back some cgroup v1 stats in OOM logs
- Yosry has also eliminated cgroup's atomic rstat flushing
- Nhat Pham adds the new cachestat() syscall. It provides userspace
with the ability to query pagecache status - a similar concept to
mincore() but more powerful and with improved usability
- Mel Gorman provides more optimizations for compaction, reducing the
prevalence of page rescanning
- Lorenzo Stoakes has done some maintanance work on the
get_user_pages() interface
- Liam Howlett continues with cleanups and maintenance work to the
maple tree code. Peng Zhang also does some work on maple tree
- Johannes Weiner has done some cleanup work on the compaction code
- David Hildenbrand has contributed additional selftests for
get_user_pages()
- Thomas Gleixner has contributed some maintenance and optimization
work for the vmalloc code
- Baolin Wang has provided some compaction cleanups,
- SeongJae Park continues maintenance work on the DAMON code
- Huang Ying has done some maintenance on the swap code's usage of
device refcounting
- Christoph Hellwig has some cleanups for the filemap/directio code
- Ryan Roberts provides two patch series which yield some
rationalization of the kernel's access to pte entries - use the
provided APIs rather than open-coding accesses
- Lorenzo Stoakes has some fixes to the interaction between pagecache
and directio access to file mappings
- John Hubbard has a series of fixes to the MM selftesting code
- ZhangPeng continues the folio conversion campaign
- Hugh Dickins has been working on the pagetable handling code, mainly
with a view to reducing the load on the mmap_lock
- Catalin Marinas has reduced the arm64 kmalloc() minimum alignment
from 128 to 8
- Domenico Cerasuolo has improved the zswap reclaim mechanism by
reorganizing the LRU management
- Matthew Wilcox provides some fixups to make gfs2 work better with the
buffer_head code
- Vishal Moola also has done some folio conversion work
- Matthew Wilcox has removed the remnants of the pagevec code - their
functionality is migrated over to struct folio_batch
* tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (380 commits)
mm/hugetlb: remove hugetlb_set_page_subpool()
mm: nommu: correct the range of mmap_sem_read_lock in task_mem()
hugetlb: revert use of page_cache_next_miss()
Revert "page cache: fix page_cache_next/prev_miss off by one"
mm/vmscan: fix root proactive reclaim unthrottling unbalanced node
mm: memcg: rename and document global_reclaim()
mm: kill [add|del]_page_to_lru_list()
mm: compaction: convert to use a folio in isolate_migratepages_block()
mm: zswap: fix double invalidate with exclusive loads
mm: remove unnecessary pagevec includes
mm: remove references to pagevec
mm: rename invalidate_mapping_pagevec to mapping_try_invalidate
mm: remove struct pagevec
net: convert sunrpc from pagevec to folio_batch
i915: convert i915_gpu_error to use a folio_batch
pagevec: rename fbatch_count()
mm: remove check_move_unevictable_pages()
drm: convert drm_gem_put_pages() to use a folio_batch
i915: convert shmem_sg_free_table() to use a folio_batch
scatterlist: add sg_set_folio()
...
-----BEGIN PGP SIGNATURE-----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=KtxS
-----END PGP SIGNATURE-----
Merge tag 'Smack-for-6.5' of https://github.com/cschaufler/smack-next
Pull smack updates from Casey Schaufler:
"There are two patches, both of which change how Smack initializes the
SMACK64TRANSMUTE extended attribute.
The first corrects the behavior of overlayfs, which creates inodes
differently from other filesystems. The second ensures that transmute
attributes specified by mount options are correctly assigned"
* tag 'Smack-for-6.5' of https://github.com/cschaufler/smack-next:
smack: Record transmuting in smk_transmuted
smack: Retrieve transmuting information in smack_inode_getsecurity()
-----BEGIN PGP SIGNATURE-----
iIoEABYIADIWIQQdXVVFGN5XqKr1Hj7LwZzRsCrn5QUCZJomKBQcem9oYXJAbGlu
dXguaWJtLmNvbQAKCRDLwZzRsCrn5QezAQD59PM+HueH5FrziRaCrXdoSt4KK42s
+gAmd4oUq9hm9QD9GOC6eaAUuV/uJ6UpEF/KjSGGmYSWI8iRWKWBcmDMmg0=
=TI2r
-----END PGP SIGNATURE-----
Merge tag 'integrity-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity
Pull integrity subsystem updates from Mimi Zohar:
"An i_version change, one bug fix, and three kernel doc fixes:
- instead of IMA detecting file change by directly accesssing
i_version, it now calls vfs_getattr_nosec().
- fix a race condition when inserting a new node in the iint rb-tree"
* tag 'integrity-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity:
ima: Fix build warnings
evm: Fix build warnings
evm: Complete description of evm_inode_setattr()
integrity: Fix possible multiple allocation in integrity_inode_get()
IMA: use vfs_getattr_nosec to get the i_version
-----BEGIN PGP SIGNATURE-----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=3nWy
-----END PGP SIGNATURE-----
Merge tag 'lsm-pr-20230626' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm
Pull lsm updates from Paul Moore:
- A SafeSetID patch to correct what appears to be a cut-n-paste typo in
the code causing a UID to be printed where a GID was desired.
This is coming via the LSM tree because we haven't been able to get a
response from the SafeSetID maintainer (Micah Morton) in several
months. Hopefully we are able to get in touch with Micah, but until
we do I'm going to pick them up in the LSM tree.
- A small fix to the reiserfs LSM xattr code.
We're continuing to work through some issues with the reiserfs code
as we try to fixup the LSM xattr handling, but in the process we're
uncovering some ugly problems in reiserfs and we may just end up
removing the LSM xattr support in reiserfs prior to reiserfs'
removal.
For better or worse, this shouldn't impact any of the reiserfs users,
as we discovered that LSM xattrs on reiserfs were completely broken,
meaning no one is currently using the combo of reiserfs and a file
labeling LSM.
- A tweak to how the cap_user_data_t struct/typedef is declared in the
header file to appease the Sparse gods.
- In the process of trying to sort out the SafeSetID lost-maintainer
problem I realized that I needed to update the labeled networking
entry to "Supported".
- Minor comment/documentation and spelling fixes.
* tag 'lsm-pr-20230626' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm:
device_cgroup: Fix kernel-doc warnings in device_cgroup
SafeSetID: fix UID printed instead of GID
MAINTAINERS: move labeled networking to "supported"
capability: erase checker warnings about struct __user_cap_data_struct
lsm: fix a number of misspellings
reiserfs: Initialize sec->length in reiserfs_security_init().
capability: fix kernel-doc warnings in capability.c
-----BEGIN PGP SIGNATURE-----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=xzMY
-----END PGP SIGNATURE-----
Merge tag 'selinux-pr-20230626' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux updates from Paul Moore:
- Thanks to help from the MPTCP folks, it looks like we have finally
sorted out a proper solution to the MPTCP socket labeling issue, see
the new security_mptcp_add_subflow() LSM hook.
- Fix the labeled NFS handling such that a labeled NFS share mounted
prior to the initial SELinux policy load is properly labeled once a
policy is loaded; more information in the commit description.
- Two patches to security/selinux/Makefile, the first took the cleanups
in v6.4 a bit further and the second removed the grouped targets
support as that functionality doesn't appear to be properly supported
prior to make v4.3.
- Deprecate the "fs" object context type in SELinux policies. The fs
object context type was an old vestige that was introduced back in
v2.6.12-rc2 but never really used.
- A number of small changes that remove dead code, clean up some
awkward bits, and generally improve the quality of the code. See the
individual commit descriptions for more information.
* tag 'selinux-pr-20230626' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: avoid bool as identifier name
selinux: fix Makefile for versions of make < v4.3
selinux: make labeled NFS work when mounted before policy load
selinux: cleanup exit_sel_fs() declaration
selinux: deprecated fs ocon
selinux: make header files self-including
selinux: keep context struct members in sync
selinux: Implement mptcp_add_subflow hook
security, lsm: Introduce security_mptcp_add_subflow()
selinux: small cleanups in selinux_audit_rule_init()
selinux: declare read-only data arrays const
selinux: retain const qualifier on string literal in avtab_hash_eval()
selinux: drop return at end of void function avc_insert()
selinux: avc: drop unused function avc_disable()
selinux: adjust typos in comments
selinux: do not leave dangling pointer behind
selinux: more Makefile tweaks
-----BEGIN PGP SIGNATURE-----
iIYEABYIAC4WIQSVyBthFV4iTW/VU1/l49DojIL20gUCZJlO/xAcbWljQGRpZ2lr
b2QubmV0AAoJEOXj0OiMgvbS/FwA/A5GFGtKnLzFpIAXgc1G3kr8c+J/WF7RVUD+
PJNEsH6PAP41l3BTqVSeVZ+tdLSC7NbesoX0MTd+rCgAWnr+Pko2Cw==
=KqpG
-----END PGP SIGNATURE-----
Merge tag 'landlock-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux
Pull landlock updates from Mickaël Salaün:
"Add support for Landlock to UML.
To do this, this fixes the way hostfs manages inodes according to the
underlying filesystem [1]. They are now properly handled as for other
filesystems, which enables Landlock support (and probably other
features).
This also extends Landlock's tests with 6 pseudo filesystems,
including hostfs"
[1] https://lore.kernel.org/all/20230612191430.339153-1-mic@digikod.net/
* tag 'landlock-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux:
selftests/landlock: Add hostfs tests
selftests/landlock: Add tests for pseudo filesystems
selftests/landlock: Make mounts configurable
selftests/landlock: Add supports_filesystem() helper
selftests/landlock: Don't create useless file layouts
hostfs: Fix ephemeral inodes
Several updates for fs/verity/:
- Do all hashing with the shash API instead of with the ahash API. This
simplifies the code and reduces API overhead. It should also make
things slightly easier for XFS's upcoming support for fsverity. It
does drop fsverity's support for off-CPU hash accelerators, but that
support was incomplete and not known to be used.
- Update and export fsverity_get_digest() so that it's ready for
overlayfs's upcoming support for fsverity checking of lowerdata.
- Improve the documentation for builtin signature support.
- Fix a bug in the large folio support.
-----BEGIN PGP SIGNATURE-----
iIoEABYIADIWIQSacvsUNc7UX4ntmEPzXCl4vpKOKwUCZJjsWRQcZWJpZ2dlcnNA
Z29vZ2xlLmNvbQAKCRDzXCl4vpKOK0IsAQCZ9ZP2U0DqLKV025LzcU9epUdS30xJ
U7WOs8gP63pH4QEAqbU1O6bVhEzdFWGzq5gdzdLePWjOyHrGCVcR2u+fgw4=
=ptAR
-----END PGP SIGNATURE-----
Merge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux
Pull fsverity updates from Eric Biggers:
"Several updates for fs/verity/:
- Do all hashing with the shash API instead of with the ahash API.
This simplifies the code and reduces API overhead. It should also
make things slightly easier for XFS's upcoming support for
fsverity. It does drop fsverity's support for off-CPU hash
accelerators, but that support was incomplete and not known to be
used
- Update and export fsverity_get_digest() so that it's ready for
overlayfs's upcoming support for fsverity checking of lowerdata
- Improve the documentation for builtin signature support
- Fix a bug in the large folio support"
* tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux:
fsverity: improve documentation for builtin signature support
fsverity: rework fsverity_get_digest() again
fsverity: simplify error handling in verify_data_block()
fsverity: don't use bio_first_page_all() in fsverity_verify_bio()
fsverity: constify fsverity_hash_alg
fsverity: use shash API instead of ahash API
In order to use __cleanup for __attribute__((__cleanup__(func))) the
name must not be used for anything else. Avoid the conflict.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: John Johansen <john.johansen@canonical.com>
Link: https://lkml.kernel.org/r/20230612093537.536441207%40infradead.org
Fix kernel-doc warnings in device_cgroup:
security/device_cgroup.c:835: warning: Excess function parameter
'dev_cgroup' description in 'devcgroup_legacy_check_permission'.
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
On PowerVM guest, variable data is prefixed with 8 bytes of timestamp.
Extract ESL by stripping off the timestamp before passing to ESL parser.
Fixes: 4b3e71e9a3 ("integrity/powerpc: Support loading keys from PLPKS")
Cc: stable@vger.kenrnel.org # v6.3
Signed-off-by: Nayna Jain <nayna@linux.ibm.com>
Tested-by: Nageswara R Sastry <rnsastry@linux.ibm.com>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230608120444.382527-1-nayna@linux.ibm.com
pr_warn message clearly says that GID should be printed,
but we have UID there. Let's fix that.
Found accidentally during the work on isolated user namespaces.
Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
[PM: fix spelling errors in description, subject tweak]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Address several issues with the calling convention and documentation of
fsverity_get_digest():
- Make it provide the hash algorithm as either a FS_VERITY_HASH_ALG_*
value or HASH_ALGO_* value, at the caller's choice, rather than only a
HASH_ALGO_* value as it did before. This allows callers to work with
the fsverity native algorithm numbers if they want to. HASH_ALGO_* is
what IMA uses, but other users (e.g. overlayfs) should use
FS_VERITY_HASH_ALG_* to match fsverity-utils and the fsverity UAPI.
- Make it return the digest size so that it doesn't need to be looked up
separately. Use the return value for this, since 0 works nicely for
the "file doesn't have fsverity enabled" case. This also makes it
clear that no other errors are possible.
- Rename the 'digest' parameter to 'raw_digest' and clearly document
that it is only useful in combination with the algorithm ID. This
hopefully clears up a point of confusion.
- Export it to modules, since overlayfs will need it for checking the
fsverity digests of lowerdata files
(https://lore.kernel.org/r/dd294a44e8f401e6b5140029d8355f88748cd8fd.1686565330.git.alexl@redhat.com).
Acked-by: Mimi Zohar <zohar@linux.ibm.com> # for the IMA piece
Link: https://lore.kernel.org/r/20230612190047.59755-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
hostfs creates a new inode for each opened or created file, which
created useless inode allocations and forbade identifying a host file
with a kernel inode.
Fix this uncommon filesystem behavior by tying kernel inodes to host
file's inode and device IDs. Even if the host filesystem inodes may be
recycled, this cannot happen while a file referencing it is opened,
which is the case with hostfs. It should be noted that hostfs inode IDs
may not be unique for the same hostfs superblock because multiple host's
(backed) superblocks may be used.
Delete inodes when dropping them to force backed host's file descriptors
closing.
This enables to entirely remove ARCH_EPHEMERAL_INODES, and then makes
Landlock fully supported by UML. This is very useful for testing
changes.
These changes also factor out and simplify some helpers thanks to the
new hostfs_inode_update() and the hostfs_iget() revamp: read_name(),
hostfs_create(), hostfs_lookup(), hostfs_mknod(), and
hostfs_fill_sb_common().
A following commit with new Landlock tests check this new hostfs inode
consistency.
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Richard Weinberger <richard@nod.at>
Link: https://lore.kernel.org/r/20230612191430.339153-2-mic@digikod.net
Signed-off-by: Mickaël Salaün <mic@digikod.net>
The only instances of get_user_pages_remote() invocations which used the
vmas parameter were for a single page which can instead simply look up the
VMA directly. In particular:-
- __update_ref_ctr() looked up the VMA but did nothing with it so we simply
remove it.
- __access_remote_vm() was already using vma_lookup() when the original
lookup failed so by doing the lookup directly this also de-duplicates the
code.
We are able to perform these VMA operations as we already hold the
mmap_lock in order to be able to call get_user_pages_remote().
As part of this work we add get_user_page_vma_remote() which abstracts the
VMA lookup, error handling and decrementing the page reference count should
the VMA lookup fail.
This forms part of a broader set of patches intended to eliminate the vmas
parameter altogether.
[akpm@linux-foundation.org: avoid passing NULL to PTR_ERR]
Link: https://lkml.kernel.org/r/d20128c849ecdbf4dd01cc828fcec32127ed939a.1684350871.git.lstoakes@gmail.com
Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> (for arm64)
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com> (for s390)
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Christian König <christian.koenig@amd.com>
Cc: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jarkko Sakkinen <jarkko@kernel.org>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Sean Christopherson <seanjc@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
The security keys sysctls are already declared on its own file,
just move the sysctl registration to its own file to help avoid
merge conflicts on sysctls.c, and help with clearing up sysctl.c
further.
This creates a small penalty of 23 bytes:
./scripts/bloat-o-meter vmlinux.1 vmlinux.2
add/remove: 2/0 grow/shrink: 0/1 up/down: 49/-26 (23)
Function old new delta
init_security_keys_sysctls - 33 +33
__pfx_init_security_keys_sysctls - 16 +16
sysctl_init_bases 85 59 -26
Total: Before=21256937, After=21256960, chg +0.00%
But soon we'll be saving tons of bytes anyway, as we modify the
sysctl registrations to use ARRAY_SIZE and so we get rid of all the
empty array elements so let's just clean this up now.
Reviewed-by: Paul Moore <paul@paul-moore.com>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Fix build warnings (function parameters description) for
evm_read_protected_xattrs(), evm_set_key() and evm_verifyxattr().
Fixes: 7626676320 ("evm: provide a function to set the EVM key from the kernel") # v4.5+
Fixes: 8314b6732a ("ima: Define new template fields xattrnames, xattrlengths and xattrvalues") # v5.14+
Fixes: 2960e6cb5f ("evm: additional parameter to pass integrity cache entry 'iint'") # v3.2+
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Avoid using the identifier `bool` to improve support with future C
standards. C23 is about to make `bool` a predefined macro (see N2654).
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Add the description for missing parameters of evm_inode_setattr() to
avoid the warning arising with W=n compile option.
Fixes: 817b54aa45 ("evm: add evm_inode_setattr to prevent updating an invalid security.evm") # v3.2+
Fixes: c1632a0f11 ("fs: port ->setattr() to pass mnt_idmap") # v6.3+
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
As noted in the comments of this commit, the current SELinux Makefile
requires features found in make v4.3 or later, which is problematic
as the Linux Kernel currently only requires make v3.82. This patch
fixes the SELinux Makefile so that it works properly on these older
versions of make, and adds a couple of comments to the Makefile about
how it can be improved once make v4.3 is required by the kernel.
Fixes: 6f933aa7df ("selinux: more Makefile tweaks")
Signed-off-by: Paul Moore <paul@paul-moore.com>
The Linux Kernel currently only requires make v3.82 while the grouped
target functionality requires make v4.3. Removed the grouped target
introduced in 4ce1f694eb ("selinux: ensure av_permissions.h is
built when needed") as well as the multiple header file targets in
the make rule. This effectively reverts the problem commit.
We will revisit this change when make >= 4.3 is required by the rest
of the kernel.
Cc: stable@vger.kernel.org
Fixes: 4ce1f694eb ("selinux: ensure av_permissions.h is built when needed")
Reported-by: Erwan Velu <e.velu@criteo.com>
Reported-by: Luiz Capitulino <luizcap@amazon.com>
Tested-by: Luiz Capitulino <luizcap@amazon.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
When integrity_inode_get() is querying and inserting the cache, there
is a conditional race in the concurrent environment.
The race condition is the result of not properly implementing
"double-checked locking". In this case, it first checks to see if the
iint cache record exists before taking the lock, but doesn't check
again after taking the integrity_iint_lock.
Fixes: bf2276d10c ("ima: allocating iint improvements")
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Cc: Dmitry Kasatkin <dmitry.kasatkin@gmail.com>
Cc: <stable@vger.kernel.org> # v3.10+
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Currently, when an NFS filesystem that supports passing LSM/SELinux
labels is mounted during early boot (before the SELinux policy is
loaded), it ends up mounted without the labeling support (i.e. with
Fedora policy all files get the generic NFS label
system_u:object_r:nfs_t:s0).
This is because the information that the NFS mount supports passing
labels (communicated to the LSM layer via the kern_flags argument of
security_set_mnt_opts()) gets lost and when the policy is loaded the
mount is initialized as if the passing is not supported.
Fix this by noting the "native labeling" in newsbsec->flags (using a new
SE_SBNATIVE flag) on the pre-policy-loaded call of
selinux_set_mnt_opts() and then making sure it is respected on the
second call from delayed_superblock_init().
Additionally, make inode_doinit_with_dentry() initialize the inode's
label from its extended attributes whenever it doesn't find it already
intitialized by the filesystem. This is needed to properly initialize
pre-existing inodes when delayed_superblock_init() is called. It should
not trigger in any other cases (and if it does, it's still better to
initialize the correct label instead of leaving the inode unlabeled).
Fixes: eb9ae68650 ("SELinux: Add new labeling type native labels")
Tested-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
[PM: fixed 'Fixes' tag format]
Signed-off-by: Paul Moore <paul@paul-moore.com>
exit_sel_fs() has been removed since commit f22f9aaf6c ("selinux:
remove the runtime disable functionality").
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
A random collection of spelling fixes for source files in the LSM
layer.
Reviewed-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
With SLOB removed, both remaining allocators support hardened usercopy,
so remove the config and associated #ifdef.
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Lorenzo Stoakes <lstoakes@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
IMA currently accesses the i_version out of the inode directly when it
does a measurement. This is fine for most simple filesystems, but can be
problematic with more complex setups (e.g. overlayfs).
Make IMA instead call vfs_getattr_nosec to get this info. This allows
the filesystem to determine whether and how to report the i_version, and
should allow IMA to work properly with a broader class of filesystems in
the future.
Reported-and-Tested-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
The object context type `fs`, not to be confused with the well used
object context type `fscon`, was introduced in the initial git commit
1da177e4c3 ("Linux-2.6.12-rc2") but never actually used since.
The paper "A Security Policy Configuration for the Security-Enhanced
Linux" [1] mentions it under `7.2 File System Contexts` but also states:
Currently, this configuration is unused.
The policy statement defining such object contexts is `fscon`, e.g.:
fscon 2 3 gen_context(system_u:object_r:conA_t,s0) \
gen_context(system_u:object_r:conB_t,s0)
It is not documented at selinuxproject.org or in the SELinux notebook
and not supported by the Reference Policy buildsystem - the statement is
not properly sorted - and thus not used in the Reference or Fedora
Policy.
Print a warning message at policy load for each such object context:
SELinux: void and deprecated fs ocon 02:03
This topic was initially highlighted by Nicolas Iooss [2].
[1]: https://media.defense.gov/2021/Jul/29/2002815735/-1/-1/0/SELINUX-SECURITY-POLICY-CONFIGURATION-REPORT.PDF
[2]: https://lore.kernel.org/selinux/CAJfZ7=mP2eJaq2BfO3y0VnwUJaY2cS2p=HZMN71z1pKjzaT0Eg@mail.gmail.com/
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
[PM: tweaked deprecation comment, description line wrapping]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Include all necessary headers in header files to enable third party
applications, like LSP servers, to resolve all used symbols.
ibpkey.h: include "flask.h" for SECINITSID_UNLABELED
initial_sid_to_string.h: include <linux/stddef.h> for NULL
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Commit 53f3517ae0 ("selinux: do not leave dangling pointer behind")
reset the `str` field of the `context` struct in an OOM error branch.
In this struct the fields `str` and `len` are coupled and should be kept
in sync. Set the length to zero according to the string be set to NULL.
Fixes: 53f3517ae0 ("selinux: do not leave dangling pointer behind")
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Newly added subflows should inherit the LSM label from the associated
MPTCP socket regardless of the current context.
This patch implements the above copying sid and class from the MPTCP
socket context, deleting the existing subflow label, if any, and then
re-creating the correct one.
The new helper reuses the selinux_netlbl_sk_security_free() function,
and the latter can end-up being called multiple times with the same
argument; we additionally need to make it idempotent.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Paul Moore <paul@paul-moore.com>
MPTCP can create subflows in kernel context, and later indirectly
expose them to user-space, via the owning MPTCP socket.
As discussed in the reported link, the above causes unexpected failures
for server, MPTCP-enabled applications.
Let's introduce a new LSM hook to allow the security module to relabel
the subflow according to the owning user-space process, via the MPTCP
socket owning the subflow.
Note that the new hook requires both the MPTCP socket and the new
subflow. This could allow future extensions, e.g. explicitly validating
the MPTCP <-> subflow linkage.
Link: https://lore.kernel.org/mptcp/CAHC9VhTNh-YwiyTds=P1e3rixEDqbRTFj22bpya=+qJqfcaMfg@mail.gmail.com/
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Paul Moore <paul@paul-moore.com>
smack_dentry_create_files_as() determines whether transmuting should occur
based on the label of the parent directory the new inode will be added to,
and not the label of the directory where it is created.
This helps for example to do transmuting on overlayfs, since the latter
first creates the inode in the working directory, and then moves it to the
correct destination.
However, despite smack_dentry_create_files_as() provides the correct label,
smack_inode_init_security() does not know from passed information whether
or not transmuting occurred. Without this information,
smack_inode_init_security() cannot set SMK_INODE_CHANGED in smk_flags,
which will result in the SMACK64TRANSMUTE xattr not being set in
smack_d_instantiate().
Thus, add the smk_transmuted field to the task_smack structure, and set it
in smack_dentry_create_files_as() to smk_task if transmuting occurred. If
smk_task is equal to smk_transmuted in smack_inode_init_security(), act as
if transmuting was successful but without taking the label from the parent
directory (the inode label was already set correctly from the current
credentials in smack_inode_alloc_security()).
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Enhance smack_inode_getsecurity() to retrieve the value for
SMACK64TRANSMUTE from the inode security blob, similarly to SMACK64.
This helps to display accurate values in the situation where the security
labels come from mount options and not from xattrs.
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
A few small tweaks to selinux_audit_rule_init():
- Adjust how we use the @rc variable so we are not doing any extra
work in the common/success case.
- Related to the above, rework the 'out' jump label so that the
success and error paths are different, simplifying both.
- Cleanup some of the vertical whitespace while we are making the
other changes.
Signed-off-by: Paul Moore <paul@paul-moore.com>
The array of mount tokens in only used in match_opt_prefix() and never
modified.
The array of symtab names is never modified and only used in the
DEBUG_HASHES configuration as output.
The array of files for the SElinux filesystem sub-directory `ss` is
similar to the other `struct tree_descr` usages only read from to
construct the containing entries.
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
The second parameter `tag` of avtab_hash_eval() is only used for
printing. In policydb_index() it is called with a string literal:
avtab_hash_eval(&p->te_avtab, "rules");
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
[PM: slight formatting tweak in description]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Commit 539813e418 ("selinux: stop returning node from avc_insert()")
converted the return value of avc_insert() to void but left the now
unnecessary trailing return statement.
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Since commit f22f9aaf6c ("selinux: remove the runtime disable
functionality") the function avc_disable() is no longer used.
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
In case mls_context_cpy() fails due to OOM set the free'd pointer in
context_cpy() to NULL to avoid it potentially being dereferenced or
free'd again in future. Freeing a NULL pointer is well-defined and a
hard NULL dereference crash is at least not exploitable and should give
a workable stack trace.
Fixes: 12b29f3455 ("selinux: support deferred mapping of contexts")
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
A few small tweaks to improve the SELinux Makefile:
- Define a new variable, 'genhdrs', to represent both flask.h and
av_permissions.h; this should help ensure consistent processing for
both generated headers.
- Move the 'ccflags-y' variable closer to the top, just after the
main 'obj-$(CONFIG_SECURITY_SELINUX)' definition to make it more
visible and improve the grouping in the Makefile.
- Rework some of the vertical whitespace to improve some of the
grouping in the Makefile.
Reviewed-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
-----BEGIN PGP SIGNATURE-----
iIoEABYIADIWIQQdXVVFGN5XqKr1Hj7LwZzRsCrn5QUCZEb46hQcem9oYXJAbGlu
dXguaWJtLmNvbQAKCRDLwZzRsCrn5U+lAP9vq7PplZeQv0cGygvp+7vH3UmcANsM
7MyyydPC7KfhNgEA7A4WKAPIdvLW7IuKxiVfkgMDxQpFCGkLRHscgbf7xgw=
=v0fw
-----END PGP SIGNATURE-----
Merge tag 'integrity-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity
Pull integrity update from Mimi Zohar:
"Just one one bug fix. Other integrity changes are being upstreamed via
the tpm and lsm trees"
* tag 'integrity-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity:
IMA: allow/fix UML builds
switching from a user process to a kernel thread.
- More folio conversions from Kefeng Wang, Zhang Peng and Pankaj Raghav.
- zsmalloc performance improvements from Sergey Senozhatsky.
- Yue Zhao has found and fixed some data race issues around the
alteration of memcg userspace tunables.
- VFS rationalizations from Christoph Hellwig:
- removal of most of the callers of write_one_page().
- make __filemap_get_folio()'s return value more useful
- Luis Chamberlain has changed tmpfs so it no longer requires swap
backing. Use `mount -o noswap'.
- Qi Zheng has made the slab shrinkers operate locklessly, providing
some scalability benefits.
- Keith Busch has improved dmapool's performance, making part of its
operations O(1) rather than O(n).
- Peter Xu adds the UFFD_FEATURE_WP_UNPOPULATED feature to userfaultd,
permitting userspace to wr-protect anon memory unpopulated ptes.
- Kirill Shutemov has changed MAX_ORDER's meaning to be inclusive rather
than exclusive, and has fixed a bunch of errors which were caused by its
unintuitive meaning.
- Axel Rasmussen give userfaultfd the UFFDIO_CONTINUE_MODE_WP feature,
which causes minor faults to install a write-protected pte.
- Vlastimil Babka has done some maintenance work on vma_merge():
cleanups to the kernel code and improvements to our userspace test
harness.
- Cleanups to do_fault_around() by Lorenzo Stoakes.
- Mike Rapoport has moved a lot of initialization code out of various
mm/ files and into mm/mm_init.c.
- Lorenzo Stoakes removd vmf_insert_mixed_prot(), which was added for
DRM, but DRM doesn't use it any more.
- Lorenzo has also coverted read_kcore() and vread() to use iterators
and has thereby removed the use of bounce buffers in some cases.
- Lorenzo has also contributed further cleanups of vma_merge().
- Chaitanya Prakash provides some fixes to the mmap selftesting code.
- Matthew Wilcox changes xfs and afs so they no longer take sleeping
locks in ->map_page(), a step towards RCUification of pagefaults.
- Suren Baghdasaryan has improved mmap_lock scalability by switching to
per-VMA locking.
- Frederic Weisbecker has reworked the percpu cache draining so that it
no longer causes latency glitches on cpu isolated workloads.
- Mike Rapoport cleans up and corrects the ARCH_FORCE_MAX_ORDER Kconfig
logic.
- Liu Shixin has changed zswap's initialization so we no longer waste a
chunk of memory if zswap is not being used.
- Yosry Ahmed has improved the performance of memcg statistics flushing.
- David Stevens has fixed several issues involving khugepaged,
userfaultfd and shmem.
- Christoph Hellwig has provided some cleanup work to zram's IO-related
code paths.
- David Hildenbrand has fixed up some issues in the selftest code's
testing of our pte state changing.
- Pankaj Raghav has made page_endio() unneeded and has removed it.
- Peter Xu contributed some rationalizations of the userfaultfd
selftests.
- Yosry Ahmed has fixed an issue around memcg's page recalim accounting.
- Chaitanya Prakash has fixed some arm-related issues in the
selftests/mm code.
- Longlong Xia has improved the way in which KSM handles hwpoisoned
pages.
- Peter Xu fixes a few issues with uffd-wp at fork() time.
- Stefan Roesch has changed KSM so that it may now be used on a
per-process and per-cgroup basis.
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZEr3zQAKCRDdBJ7gKXxA
jlLoAP0fpQBipwFxED0Us4SKQfupV6z4caXNJGPeay7Aj11/kQD/aMRC2uPfgr96
eMG3kwn2pqkB9ST2QpkaRbxA//eMbQY=
=J+Dj
-----END PGP SIGNATURE-----
Merge tag 'mm-stable-2023-04-27-15-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of
switching from a user process to a kernel thread.
- More folio conversions from Kefeng Wang, Zhang Peng and Pankaj
Raghav.
- zsmalloc performance improvements from Sergey Senozhatsky.
- Yue Zhao has found and fixed some data race issues around the
alteration of memcg userspace tunables.
- VFS rationalizations from Christoph Hellwig:
- removal of most of the callers of write_one_page()
- make __filemap_get_folio()'s return value more useful
- Luis Chamberlain has changed tmpfs so it no longer requires swap
backing. Use `mount -o noswap'.
- Qi Zheng has made the slab shrinkers operate locklessly, providing
some scalability benefits.
- Keith Busch has improved dmapool's performance, making part of its
operations O(1) rather than O(n).
- Peter Xu adds the UFFD_FEATURE_WP_UNPOPULATED feature to userfaultd,
permitting userspace to wr-protect anon memory unpopulated ptes.
- Kirill Shutemov has changed MAX_ORDER's meaning to be inclusive
rather than exclusive, and has fixed a bunch of errors which were
caused by its unintuitive meaning.
- Axel Rasmussen give userfaultfd the UFFDIO_CONTINUE_MODE_WP feature,
which causes minor faults to install a write-protected pte.
- Vlastimil Babka has done some maintenance work on vma_merge():
cleanups to the kernel code and improvements to our userspace test
harness.
- Cleanups to do_fault_around() by Lorenzo Stoakes.
- Mike Rapoport has moved a lot of initialization code out of various
mm/ files and into mm/mm_init.c.
- Lorenzo Stoakes removd vmf_insert_mixed_prot(), which was added for
DRM, but DRM doesn't use it any more.
- Lorenzo has also coverted read_kcore() and vread() to use iterators
and has thereby removed the use of bounce buffers in some cases.
- Lorenzo has also contributed further cleanups of vma_merge().
- Chaitanya Prakash provides some fixes to the mmap selftesting code.
- Matthew Wilcox changes xfs and afs so they no longer take sleeping
locks in ->map_page(), a step towards RCUification of pagefaults.
- Suren Baghdasaryan has improved mmap_lock scalability by switching to
per-VMA locking.
- Frederic Weisbecker has reworked the percpu cache draining so that it
no longer causes latency glitches on cpu isolated workloads.
- Mike Rapoport cleans up and corrects the ARCH_FORCE_MAX_ORDER Kconfig
logic.
- Liu Shixin has changed zswap's initialization so we no longer waste a
chunk of memory if zswap is not being used.
- Yosry Ahmed has improved the performance of memcg statistics
flushing.
- David Stevens has fixed several issues involving khugepaged,
userfaultfd and shmem.
- Christoph Hellwig has provided some cleanup work to zram's IO-related
code paths.
- David Hildenbrand has fixed up some issues in the selftest code's
testing of our pte state changing.
- Pankaj Raghav has made page_endio() unneeded and has removed it.
- Peter Xu contributed some rationalizations of the userfaultfd
selftests.
- Yosry Ahmed has fixed an issue around memcg's page recalim
accounting.
- Chaitanya Prakash has fixed some arm-related issues in the
selftests/mm code.
- Longlong Xia has improved the way in which KSM handles hwpoisoned
pages.
- Peter Xu fixes a few issues with uffd-wp at fork() time.
- Stefan Roesch has changed KSM so that it may now be used on a
per-process and per-cgroup basis.
* tag 'mm-stable-2023-04-27-15-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (369 commits)
mm,unmap: avoid flushing TLB in batch if PTE is inaccessible
shmem: restrict noswap option to initial user namespace
mm/khugepaged: fix conflicting mods to collapse_file()
sparse: remove unnecessary 0 values from rc
mm: move 'mmap_min_addr' logic from callers into vm_unmapped_area()
hugetlb: pte_alloc_huge() to replace huge pte_alloc_map()
maple_tree: fix allocation in mas_sparse_area()
mm: do not increment pgfault stats when page fault handler retries
zsmalloc: allow only one active pool compaction context
selftests/mm: add new selftests for KSM
mm: add new KSM process and sysfs knobs
mm: add new api to enable ksm per process
mm: shrinkers: fix debugfs file permissions
mm: don't check VMA write permissions if the PTE/PMD indicates write permissions
migrate_pages_batch: fix statistics for longterm pin retry
userfaultfd: use helper function range_in_vma()
lib/show_mem.c: use for_each_populated_zone() simplify code
mm: correct arg in reclaim_pages()/reclaim_clean_pages_from_list()
fs/buffer: convert create_page_buffers to folio_create_buffers
fs/buffer: add folio_create_empty_buffers helper
...
This pull request goes with only a few sysctl moves from the
kernel/sysctl.c file, the rest of the work has been put towards
deprecating two API calls which incur recursion and prevent us
from simplifying the registration process / saving memory per
move. Most of the changes have been soaking on linux-next since
v6.3-rc3.
I've slowed down the kernel/sysctl.c moves due to Matthew Wilcox's
feedback that we should see if we could *save* memory with these
moves instead of incurring more memory. We currently incur more
memory since when we move a syctl from kernel/sysclt.c out to its
own file we end up having to add a new empty sysctl used to register
it. To achieve saving memory we want to allow syctls to be passed
without requiring the end element being empty, and just have our
registration process rely on ARRAY_SIZE(). Without this, supporting
both styles of sysctls would make the sysctl registration pretty
brittle, hard to read and maintain as can be seen from Meng Tang's
efforts to do just this [0]. Fortunately, in order to use ARRAY_SIZE()
for all sysctl registrations also implies doing the work to deprecate
two API calls which use recursion in order to support sysctl
declarations with subdirectories.
And so during this development cycle quite a bit of effort went into
this deprecation effort. I've annotated the following two APIs are
deprecated and in few kernel releases we should be good to remove them:
* register_sysctl_table()
* register_sysctl_paths()
During this merge window we should be able to deprecate and unexport
register_sysctl_paths(), we can probably do that towards the end
of this merge window.
Deprecating register_sysctl_table() will take a bit more time but
this pull request goes with a few example of how to do this.
As it turns out each of the conversions to move away from either of
these two API calls *also* saves memory. And so long term, all these
changes *will* prove to have saved a bit of memory on boot.
The way I see it then is if remove a user of one deprecated call, it
gives us enough savings to move one kernel/sysctl.c out from the
generic arrays as we end up with about the same amount of bytes.
Since deprecating register_sysctl_table() and register_sysctl_paths()
does not require maintainer coordination except the final unexport
you'll see quite a bit of these changes from other pull requests, I've
just kept the stragglers after rc3.
Most of these changes have been soaking on linux-next since around rc3.
[0] https://lkml.kernel.org/r/ZAD+cpbrqlc5vmry@bombadil.infradead.org
-----BEGIN PGP SIGNATURE-----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=0U0W
-----END PGP SIGNATURE-----
Merge tag 'sysctl-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux
Pull sysctl updates from Luis Chamberlain:
"This only does a few sysctl moves from the kernel/sysctl.c file, the
rest of the work has been put towards deprecating two API calls which
incur recursion and prevent us from simplifying the registration
process / saving memory per move. Most of the changes have been
soaking on linux-next since v6.3-rc3.
I've slowed down the kernel/sysctl.c moves due to Matthew Wilcox's
feedback that we should see if we could *save* memory with these moves
instead of incurring more memory. We currently incur more memory since
when we move a syctl from kernel/sysclt.c out to its own file we end
up having to add a new empty sysctl used to register it. To achieve
saving memory we want to allow syctls to be passed without requiring
the end element being empty, and just have our registration process
rely on ARRAY_SIZE(). Without this, supporting both styles of sysctls
would make the sysctl registration pretty brittle, hard to read and
maintain as can be seen from Meng Tang's efforts to do just this [0].
Fortunately, in order to use ARRAY_SIZE() for all sysctl registrations
also implies doing the work to deprecate two API calls which use
recursion in order to support sysctl declarations with subdirectories.
And so during this development cycle quite a bit of effort went into
this deprecation effort. I've annotated the following two APIs are
deprecated and in few kernel releases we should be good to remove
them:
- register_sysctl_table()
- register_sysctl_paths()
During this merge window we should be able to deprecate and unexport
register_sysctl_paths(), we can probably do that towards the end of
this merge window.
Deprecating register_sysctl_table() will take a bit more time but this
pull request goes with a few example of how to do this.
As it turns out each of the conversions to move away from either of
these two API calls *also* saves memory. And so long term, all these
changes *will* prove to have saved a bit of memory on boot.
The way I see it then is if remove a user of one deprecated call, it
gives us enough savings to move one kernel/sysctl.c out from the
generic arrays as we end up with about the same amount of bytes.
Since deprecating register_sysctl_table() and register_sysctl_paths()
does not require maintainer coordination except the final unexport
you'll see quite a bit of these changes from other pull requests, I've
just kept the stragglers after rc3"
Link: https://lkml.kernel.org/r/ZAD+cpbrqlc5vmry@bombadil.infradead.org [0]
* tag 'sysctl-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux: (29 commits)
fs: fix sysctls.c built
mm: compaction: remove incorrect #ifdef checks
mm: compaction: move compaction sysctl to its own file
mm: memory-failure: Move memory failure sysctls to its own file
arm: simplify two-level sysctl registration for ctl_isa_vars
ia64: simplify one-level sysctl registration for kdump_ctl_table
utsname: simplify one-level sysctl registration for uts_kern_table
ntfs: simplfy one-level sysctl registration for ntfs_sysctls
coda: simplify one-level sysctl registration for coda_table
fs/cachefiles: simplify one-level sysctl registration for cachefiles_sysctls
xfs: simplify two-level sysctl registration for xfs_table
nfs: simplify two-level sysctl registration for nfs_cb_sysctls
nfs: simplify two-level sysctl registration for nfs4_cb_sysctls
lockd: simplify two-level sysctl registration for nlm_sysctls
proc_sysctl: enhance documentation
xen: simplify sysctl registration for balloon
md: simplify sysctl registration
hv: simplify sysctl registration
scsi: simplify sysctl registration with register_sysctl()
csky: simplify alignment sysctl registration
...
Core
----
- Introduce a config option to tweak MAX_SKB_FRAGS. Increasing the
default value allows for better BIG TCP performances.
- Reduce compound page head access for zero-copy data transfers.
- RPS/RFS improvements, avoiding unneeded NET_RX_SOFTIRQ when possible.
- Threaded NAPI improvements, adding defer skb free support and unneeded
softirq avoidance.
- Address dst_entry reference count scalability issues, via false
sharing avoidance and optimize refcount tracking.
- Add lockless accesses annotation to sk_err[_soft].
- Optimize again the skb struct layout.
- Extends the skb drop reasons to make it usable by multiple
subsystems.
- Better const qualifier awareness for socket casts.
BPF
---
- Add skb and XDP typed dynptrs which allow BPF programs for more
ergonomic and less brittle iteration through data and variable-sized
accesses.
- Add a new BPF netfilter program type and minimal support to hook
BPF programs to netfilter hooks such as prerouting or forward.
- Add more precise memory usage reporting for all BPF map types.
- Adds support for using {FOU,GUE} encap with an ipip device operating
in collect_md mode and add a set of BPF kfuncs for controlling encap
params.
- Allow BPF programs to detect at load time whether a particular kfunc
exists or not, and also add support for this in light skeleton.
- Bigger batch of BPF verifier improvements to prepare for upcoming BPF
open-coded iterators allowing for less restrictive looping capabilities.
- Rework RCU enforcement in the verifier, add kptr_rcu and enforce BPF
programs to NULL-check before passing such pointers into kfunc.
- Add support for kptrs in percpu hashmaps, percpu LRU hashmaps and in
local storage maps.
- Enable RCU semantics for task BPF kptrs and allow referenced kptr
tasks to be stored in BPF maps.
- Add support for refcounted local kptrs to the verifier for allowing
shared ownership, useful for adding a node to both the BPF list and
rbtree.
- Add BPF verifier support for ST instructions in convert_ctx_access()
which will help new -mcpu=v4 clang flag to start emitting them.
- Add ARM32 USDT support to libbpf.
- Improve bpftool's visual program dump which produces the control
flow graph in a DOT format by adding C source inline annotations.
Protocols
---------
- IPv4: Allow adding to IPv4 address a 'protocol' tag. Such value
indicates the provenance of the IP address.
- IPv6: optimize route lookup, dropping unneeded R/W lock acquisition.
- Add the handshake upcall mechanism, allowing the user-space
to implement generic TLS handshake on kernel's behalf.
- Bridge: support per-{Port, VLAN} neighbor suppression, increasing
resilience to nodes failures.
- SCTP: add support for Fair Capacity and Weighted Fair Queueing
schedulers.
- MPTCP: delay first subflow allocation up to its first usage. This
will allow for later better LSM interaction.
- xfrm: Remove inner/outer modes from input/output path. These are
not needed anymore.
- WiFi:
- reduced neighbor report (RNR) handling for AP mode
- HW timestamping support
- support for randomized auth/deauth TA for PASN privacy
- per-link debugfs for multi-link
- TC offload support for mac80211 drivers
- mac80211 mesh fast-xmit and fast-rx support
- enable Wi-Fi 7 (EHT) mesh support
Netfilter
---------
- Add nf_tables 'brouting' support, to force a packet to be routed
instead of being bridged.
- Update bridge netfilter and ovs conntrack helpers to handle
IPv6 Jumbo packets properly, i.e. fetch the packet length
from hop-by-hop extension header. This is needed for BIT TCP
support.
- The iptables 32bit compat interface isn't compiled in by default
anymore.
- Move ip(6)tables builtin icmp matches to the udptcp one.
This has the advantage that icmp/icmpv6 match doesn't load the
iptables/ip6tables modules anymore when iptables-nft is used.
- Extended netlink error report for netdevice in flowtables and
netdev/chains. Allow for incrementally add/delete devices to netdev
basechain. Allow to create netdev chain without device.
Driver API
----------
- Remove redundant Device Control Error Reporting Enable, as PCI core
has already error reporting enabled at enumeration time.
- Move Multicast DB netlink handlers to core, allowing devices other
then bridge to use them.
- Allow the page_pool to directly recycle the pages from safely
localized NAPI.
- Implement lockless TX queue stop/wake combo macros, allowing for
further code de-duplication and sanitization.
- Add YNL support for user headers and struct attrs.
- Add partial YNL specification for devlink.
- Add partial YNL specification for ethtool.
- Add tc-mqprio and tc-taprio support for preemptible traffic classes.
- Add tx push buf len param to ethtool, specifies the maximum number
of bytes of a transmitted packet a driver can push directly to the
underlying device.
- Add basic LED support for switch/phy.
- Add NAPI documentation, stop relaying on external links.
- Convert dsa_master_ioctl() to netdev notifier. This is a preparatory
work to make the hardware timestamping layer selectable by user
space.
- Add transceiver support and improve the error messages for CAN-FD
controllers.
New hardware / drivers
----------------------
- Ethernet:
- AMD/Pensando core device support
- MediaTek MT7981 SoC
- MediaTek MT7988 SoC
- Broadcom BCM53134 embedded switch
- Texas Instruments CPSW9G ethernet switch
- Qualcomm EMAC3 DWMAC ethernet
- StarFive JH7110 SoC
- NXP CBTX ethernet PHY
- WiFi:
- Apple M1 Pro/Max devices
- RealTek rtl8710bu/rtl8188gu
- RealTek rtl8822bs, rtl8822cs and rtl8821cs SDIO chipset
- Bluetooth:
- Realtek RTL8821CS, RTL8851B, RTL8852BS
- Mediatek MT7663, MT7922
- NXP w8997
- Actions Semi ATS2851
- QTI WCN6855
- Marvell 88W8997
- Can:
- STMicroelectronics bxcan stm32f429
Drivers
-------
- Ethernet NICs:
- Intel (1G, icg):
- add tracking and reporting of QBV config errors.
- add support for configuring max SDU for each Tx queue.
- Intel (100G, ice):
- refactor mailbox overflow detection to support Scalable IOV
- GNSS interface optimization
- Intel (i40e):
- support XDP multi-buffer
- nVidia/Mellanox:
- add the support for linux bridge multicast offload
- enable TC offload for egress and engress MACVLAN over bond
- add support for VxLAN GBP encap/decap flows offload
- extend packet offload to fully support libreswan
- support tunnel mode in mlx5 IPsec packet offload
- extend XDP multi-buffer support
- support MACsec VLAN offload
- add support for dynamic msix vectors allocation
- drop RX page_cache and fully use page_pool
- implement thermal zone to report NIC temperature
- Netronome/Corigine:
- add support for multi-zone conntrack offload
- Solarflare/Xilinx:
- support offloading TC VLAN push/pop actions to the MAE
- support TC decap rules
- support unicast PTP
- Other NICs:
- Broadcom (bnxt): enforce software based freq adjustments only
on shared PHC NIC
- RealTek (r8169): refactor to addess ASPM issues during NAPI poll.
- Micrel (lan8841): add support for PTP_PF_PEROUT
- Cadence (macb): enable PTP unicast
- Engleder (tsnep): add XDP socket zero-copy support
- virtio-net: implement exact header length guest feature
- veth: add page_pool support for page recycling
- vxlan: add MDB data path support
- gve: add XDP support for GQI-QPL format
- geneve: accept every ethertype
- macvlan: allow some packets to bypass broadcast queue
- mana: add support for jumbo frame
- Ethernet high-speed switches:
- Microchip (sparx5): Add support for TC flower templates.
- Ethernet embedded switches:
- Broadcom (b54):
- configure 6318 and 63268 RGMII ports
- Marvell (mv88e6xxx):
- faster C45 bus scan
- Microchip:
- lan966x:
- add support for IS1 VCAP
- better TX/RX from/to CPU performances
- ksz9477: add ETS Qdisc support
- ksz8: enhance static MAC table operations and error handling
- sama7g5: add PTP capability
- NXP (ocelot):
- add support for external ports
- add support for preemptible traffic classes
- Texas Instruments:
- add CPSWxG SGMII support for J7200 and J721E
- Intel WiFi (iwlwifi):
- preparation for Wi-Fi 7 EHT and multi-link support
- EHT (Wi-Fi 7) sniffer support
- hardware timestamping support for some devices/firwmares
- TX beacon protection on newer hardware
- Qualcomm 802.11ax WiFi (ath11k):
- MU-MIMO parameters support
- ack signal support for management packets
- RealTek WiFi (rtw88):
- SDIO bus support
- better support for some SDIO devices
(e.g. MAC address from efuse)
- RealTek WiFi (rtw89):
- HW scan support for 8852b
- better support for 6 GHz scanning
- support for various newer firmware APIs
- framework firmware backwards compatibility
- MediaTek WiFi (mt76):
- P2P support
- mesh A-MSDU support
- EHT (Wi-Fi 7) support
- coredump support
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
-----BEGIN PGP SIGNATURE-----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=ITVa
-----END PGP SIGNATURE-----
Merge tag 'net-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"Core:
- Introduce a config option to tweak MAX_SKB_FRAGS. Increasing the
default value allows for better BIG TCP performances
- Reduce compound page head access for zero-copy data transfers
- RPS/RFS improvements, avoiding unneeded NET_RX_SOFTIRQ when
possible
- Threaded NAPI improvements, adding defer skb free support and
unneeded softirq avoidance
- Address dst_entry reference count scalability issues, via false
sharing avoidance and optimize refcount tracking
- Add lockless accesses annotation to sk_err[_soft]
- Optimize again the skb struct layout
- Extends the skb drop reasons to make it usable by multiple
subsystems
- Better const qualifier awareness for socket casts
BPF:
- Add skb and XDP typed dynptrs which allow BPF programs for more
ergonomic and less brittle iteration through data and
variable-sized accesses
- Add a new BPF netfilter program type and minimal support to hook
BPF programs to netfilter hooks such as prerouting or forward
- Add more precise memory usage reporting for all BPF map types
- Adds support for using {FOU,GUE} encap with an ipip device
operating in collect_md mode and add a set of BPF kfuncs for
controlling encap params
- Allow BPF programs to detect at load time whether a particular
kfunc exists or not, and also add support for this in light
skeleton
- Bigger batch of BPF verifier improvements to prepare for upcoming
BPF open-coded iterators allowing for less restrictive looping
capabilities
- Rework RCU enforcement in the verifier, add kptr_rcu and enforce
BPF programs to NULL-check before passing such pointers into kfunc
- Add support for kptrs in percpu hashmaps, percpu LRU hashmaps and
in local storage maps
- Enable RCU semantics for task BPF kptrs and allow referenced kptr
tasks to be stored in BPF maps
- Add support for refcounted local kptrs to the verifier for allowing
shared ownership, useful for adding a node to both the BPF list and
rbtree
- Add BPF verifier support for ST instructions in
convert_ctx_access() which will help new -mcpu=v4 clang flag to
start emitting them
- Add ARM32 USDT support to libbpf
- Improve bpftool's visual program dump which produces the control
flow graph in a DOT format by adding C source inline annotations
Protocols:
- IPv4: Allow adding to IPv4 address a 'protocol' tag. Such value
indicates the provenance of the IP address
- IPv6: optimize route lookup, dropping unneeded R/W lock acquisition
- Add the handshake upcall mechanism, allowing the user-space to
implement generic TLS handshake on kernel's behalf
- Bridge: support per-{Port, VLAN} neighbor suppression, increasing
resilience to nodes failures
- SCTP: add support for Fair Capacity and Weighted Fair Queueing
schedulers
- MPTCP: delay first subflow allocation up to its first usage. This
will allow for later better LSM interaction
- xfrm: Remove inner/outer modes from input/output path. These are
not needed anymore
- WiFi:
- reduced neighbor report (RNR) handling for AP mode
- HW timestamping support
- support for randomized auth/deauth TA for PASN privacy
- per-link debugfs for multi-link
- TC offload support for mac80211 drivers
- mac80211 mesh fast-xmit and fast-rx support
- enable Wi-Fi 7 (EHT) mesh support
Netfilter:
- Add nf_tables 'brouting' support, to force a packet to be routed
instead of being bridged
- Update bridge netfilter and ovs conntrack helpers to handle IPv6
Jumbo packets properly, i.e. fetch the packet length from
hop-by-hop extension header. This is needed for BIT TCP support
- The iptables 32bit compat interface isn't compiled in by default
anymore
- Move ip(6)tables builtin icmp matches to the udptcp one. This has
the advantage that icmp/icmpv6 match doesn't load the
iptables/ip6tables modules anymore when iptables-nft is used
- Extended netlink error report for netdevice in flowtables and
netdev/chains. Allow for incrementally add/delete devices to netdev
basechain. Allow to create netdev chain without device
Driver API:
- Remove redundant Device Control Error Reporting Enable, as PCI core
has already error reporting enabled at enumeration time
- Move Multicast DB netlink handlers to core, allowing devices other
then bridge to use them
- Allow the page_pool to directly recycle the pages from safely
localized NAPI
- Implement lockless TX queue stop/wake combo macros, allowing for
further code de-duplication and sanitization
- Add YNL support for user headers and struct attrs
- Add partial YNL specification for devlink
- Add partial YNL specification for ethtool
- Add tc-mqprio and tc-taprio support for preemptible traffic classes
- Add tx push buf len param to ethtool, specifies the maximum number
of bytes of a transmitted packet a driver can push directly to the
underlying device
- Add basic LED support for switch/phy
- Add NAPI documentation, stop relaying on external links
- Convert dsa_master_ioctl() to netdev notifier. This is a
preparatory work to make the hardware timestamping layer selectable
by user space
- Add transceiver support and improve the error messages for CAN-FD
controllers
New hardware / drivers:
- Ethernet:
- AMD/Pensando core device support
- MediaTek MT7981 SoC
- MediaTek MT7988 SoC
- Broadcom BCM53134 embedded switch
- Texas Instruments CPSW9G ethernet switch
- Qualcomm EMAC3 DWMAC ethernet
- StarFive JH7110 SoC
- NXP CBTX ethernet PHY
- WiFi:
- Apple M1 Pro/Max devices
- RealTek rtl8710bu/rtl8188gu
- RealTek rtl8822bs, rtl8822cs and rtl8821cs SDIO chipset
- Bluetooth:
- Realtek RTL8821CS, RTL8851B, RTL8852BS
- Mediatek MT7663, MT7922
- NXP w8997
- Actions Semi ATS2851
- QTI WCN6855
- Marvell 88W8997
- Can:
- STMicroelectronics bxcan stm32f429
Drivers:
- Ethernet NICs:
- Intel (1G, icg):
- add tracking and reporting of QBV config errors
- add support for configuring max SDU for each Tx queue
- Intel (100G, ice):
- refactor mailbox overflow detection to support Scalable IOV
- GNSS interface optimization
- Intel (i40e):
- support XDP multi-buffer
- nVidia/Mellanox:
- add the support for linux bridge multicast offload
- enable TC offload for egress and engress MACVLAN over bond
- add support for VxLAN GBP encap/decap flows offload
- extend packet offload to fully support libreswan
- support tunnel mode in mlx5 IPsec packet offload
- extend XDP multi-buffer support
- support MACsec VLAN offload
- add support for dynamic msix vectors allocation
- drop RX page_cache and fully use page_pool
- implement thermal zone to report NIC temperature
- Netronome/Corigine:
- add support for multi-zone conntrack offload
- Solarflare/Xilinx:
- support offloading TC VLAN push/pop actions to the MAE
- support TC decap rules
- support unicast PTP
- Other NICs:
- Broadcom (bnxt): enforce software based freq adjustments only on
shared PHC NIC
- RealTek (r8169): refactor to addess ASPM issues during NAPI poll
- Micrel (lan8841): add support for PTP_PF_PEROUT
- Cadence (macb): enable PTP unicast
- Engleder (tsnep): add XDP socket zero-copy support
- virtio-net: implement exact header length guest feature
- veth: add page_pool support for page recycling
- vxlan: add MDB data path support
- gve: add XDP support for GQI-QPL format
- geneve: accept every ethertype
- macvlan: allow some packets to bypass broadcast queue
- mana: add support for jumbo frame
- Ethernet high-speed switches:
- Microchip (sparx5): Add support for TC flower templates
- Ethernet embedded switches:
- Broadcom (b54):
- configure 6318 and 63268 RGMII ports
- Marvell (mv88e6xxx):
- faster C45 bus scan
- Microchip:
- lan966x:
- add support for IS1 VCAP
- better TX/RX from/to CPU performances
- ksz9477: add ETS Qdisc support
- ksz8: enhance static MAC table operations and error handling
- sama7g5: add PTP capability
- NXP (ocelot):
- add support for external ports
- add support for preemptible traffic classes
- Texas Instruments:
- add CPSWxG SGMII support for J7200 and J721E
- Intel WiFi (iwlwifi):
- preparation for Wi-Fi 7 EHT and multi-link support
- EHT (Wi-Fi 7) sniffer support
- hardware timestamping support for some devices/firwmares
- TX beacon protection on newer hardware
- Qualcomm 802.11ax WiFi (ath11k):
- MU-MIMO parameters support
- ack signal support for management packets
- RealTek WiFi (rtw88):
- SDIO bus support
- better support for some SDIO devices (e.g. MAC address from
efuse)
- RealTek WiFi (rtw89):
- HW scan support for 8852b
- better support for 6 GHz scanning
- support for various newer firmware APIs
- framework firmware backwards compatibility
- MediaTek WiFi (mt76):
- P2P support
- mesh A-MSDU support
- EHT (Wi-Fi 7) support
- coredump support"
* tag 'net-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2078 commits)
net: phy: hide the PHYLIB_LEDS knob
net: phy: marvell-88x2222: remove unnecessary (void*) conversions
tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp.
net: amd: Fix link leak when verifying config failed
net: phy: marvell: Fix inconsistent indenting in led_blink_set
lan966x: Don't use xdp_frame when action is XDP_TX
tsnep: Add XDP socket zero-copy TX support
tsnep: Add XDP socket zero-copy RX support
tsnep: Move skb receive action to separate function
tsnep: Add functions for queue enable/disable
tsnep: Rework TX/RX queue initialization
tsnep: Replace modulo operation with mask
net: phy: dp83867: Add led_brightness_set support
net: phy: Fix reading LED reg property
drivers: nfc: nfcsim: remove return value check of `dev_dir`
net: phy: dp83867: Remove unnecessary (void*) conversions
net: ethtool: coalesce: try to make user settings stick twice
net: mana: Check if netdev/napi_alloc_frag returns single page
net: mana: Rename mana_refill_rxoob and remove some empty lines
net: veth: add page_pool stats
...
Linus Torvalds