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David Hildenbrand (Red Hat)
3937027cae mm/hugetlb: fix two comments related to huge_pmd_unshare() 
Ever since we stopped using the page count to detect shared PMD page
tables, these comments are outdated.

The only reason we have to flush the TLB early is because once we drop the
i_mmap_rwsem, the previously shared page table could get freed (to then
get reallocated and used for other purpose).  So we really have to flush
the TLB before that could happen.

So let's simplify the comments a bit.

The "If we unshared PMDs, the TLB flush was not recorded in mmu_gather."
part introduced as in commit a4a118f2ee ("hugetlbfs: flush TLBs
correctly after huge_pmd_unshare") was confusing: sure it is recorded in
the mmu_gather, otherwise tlb_flush_mmu_tlbonly() wouldn't do anything. 
So let's drop that comment while at it as well.

We'll centralize these comments in a single helper as we rework the code
next.

Link: https://lkml.kernel.org/r/20251223214037.580860-3-david@kernel.org
Fixes: 59d9094df3 ("mm: hugetlb: independent PMD page table shared count")
Signed-off-by: David Hildenbrand (Red Hat) <david@kernel.org>
Reviewed-by: Rik van Riel <riel@surriel.com>
Tested-by: Laurence Oberman <loberman@redhat.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Acked-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: Harry Yoo <harry.yoo@oracle.com>
Cc: Liu Shixin <liushixin2@huawei.com>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: "Uschakow, Stanislav" <suschako@amazon.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2026-01-20 09:34:26 -08:00
David Hildenbrand (Red Hat)
ca1a47cd3f mm/hugetlb: fix hugetlb_pmd_shared() 
Patch series "mm/hugetlb: fixes for PMD table sharing (incl.  using
mmu_gather)", v3.

One functional fix, one performance regression fix, and two related
comment fixes.

I cleaned up my prototype I recently shared [1] for the performance fix,
deferring most of the cleanups I had in the prototype to a later point. 
While doing that I identified the other things.

The goal of this patch set is to be backported to stable trees "fairly"
easily. At least patch #1 and #4.

Patch #1 fixes hugetlb_pmd_shared() not detecting any sharing
Patch #2 + #3 are simple comment fixes that patch #4 interacts with.
Patch #4 is a fix for the reported performance regression due to excessive
IPI broadcasts during fork()+exit().

The last patch is all about TLB flushes, IPIs and mmu_gather.
Read: complicated

There are plenty of cleanups in the future to be had + one reasonable
optimization on x86. But that's all out of scope for this series.

Runtime tested, with a focus on fixing the performance regression using
the original reproducer [2] on x86.


This patch (of 4):

We switched from (wrongly) using the page count to an independent shared
count.  Now, shared page tables have a refcount of 1 (excluding
speculative references) and instead use ptdesc->pt_share_count to identify
sharing.

We didn't convert hugetlb_pmd_shared(), so right now, we would never
detect a shared PMD table as such, because sharing/unsharing no longer
touches the refcount of a PMD table.

Page migration, like mbind() or migrate_pages() would allow for migrating
folios mapped into such shared PMD tables, even though the folios are not
exclusive.  In smaps we would account them as "private" although they are
"shared", and we would be wrongly setting the PM_MMAP_EXCLUSIVE in the
pagemap interface.

Fix it by properly using ptdesc_pmd_is_shared() in hugetlb_pmd_shared().

Link: https://lkml.kernel.org/r/20251223214037.580860-1-david@kernel.org
Link: https://lkml.kernel.org/r/20251223214037.580860-2-david@kernel.org
Link: https://lore.kernel.org/all/8cab934d-4a56-44aa-b641-bfd7e23bd673@kernel.org/ [1]
Link: https://lore.kernel.org/all/8cab934d-4a56-44aa-b641-bfd7e23bd673@kernel.org/ [2]
Fixes: 59d9094df3 ("mm: hugetlb: independent PMD page table shared count")
Signed-off-by: David Hildenbrand (Red Hat) <david@kernel.org>
Reviewed-by: Rik van Riel <riel@surriel.com>
Reviewed-by: Lance Yang <lance.yang@linux.dev>
Tested-by: Lance Yang <lance.yang@linux.dev>
Reviewed-by: Harry Yoo <harry.yoo@oracle.com>
Tested-by: Laurence Oberman <loberman@redhat.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Acked-by: Oscar Salvador <osalvador@suse.de>
Cc: Liu Shixin <liushixin2@huawei.com>
Cc: Uschakow, Stanislav" <suschako@amazon.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2026-01-20 09:34:26 -08:00
Lorenzo Stoakes
90888b4ae1 mm: remove unnecessary and incorrect mmap lock assert 
This check was introduced by commit 42fc541404 ("mmap locking API: add
mmap_assert_locked() and mmap_assert_write_locked()") which replaced a
VM_BUG_ON_VMA() over rwsem_is_locked from commit a00cc7d9dd ("mm, x86:
add support for PUD-sized transparent hugepages"), i.e.  the commit that
introduced PUD THPs.

These seem to be careful asserts introduced to ensure that locks are held
in general, however for a zap we require that VMAs are kept stable, and
this is a requirement that has held perfectly well for a long time.

These were long before VMA locks and thus there appears to be no reason to
think this is assert is there for anything other than 'stabilised VMA'.

Asserting that the VMA under examination is stable only in the case of a
THP PUD is strange and unnecessary.  If we wish to be careful and assert
such things, we should do so at the zap level.

However in any case the current situation is already simply incorrect - a
VMA lock suffices here.

Remove the assert for now as it is unnecessarily, incorrect and unhelpful,
subsequent work can introduce an assert in general for zapping if
required.

Link: https://lkml.kernel.org/r/20260114115619.1087466-1-lorenzo.stoakes@oracle.com
Fixes: 2ab7f1bbaf ("mm/madvise: allow guard page install/remove under VMA lock")
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reported-by: Chris Mason <clm@meta.com>
Closes: https://lore.kernel.org/all/20260113220856.2358195-1-clm@meta.com/
Acked-by: David Hildenbrand (Red Hat) <david@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: SeongJae Park <sj@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2026-01-20 09:34:25 -08:00
Andrew Cooper
b505f19445 x86/kfence: avoid writing L1TF-vulnerable PTEs 
For native, the choice of PTE is fine.  There's real memory backing the
non-present PTE.  However, for XenPV, Xen complains:

  (XEN) d1 L1TF-vulnerable L1e 8010000018200066 - Shadowing

To explain, some background on XenPV pagetables:

  Xen PV guests are control their own pagetables; they choose the new
  PTE value, and use hypercalls to make changes so Xen can audit for
  safety.

  In addition to a regular reference count, Xen also maintains a type
  reference count.  e.g.  SegDesc (referenced by vGDT/vLDT), Writable
  (referenced with _PAGE_RW) or L{1..4} (referenced by vCR3 or a lower
  pagetable level).  This is in order to prevent e.g.  a page being
  inserted into the pagetables for which the guest has a writable mapping.

  For non-present mappings, all other bits become software accessible,
  and typically contain metadata rather a real frame address.  There is
  nothing that a reference count could sensibly be tied to.  As such, even
  if Xen could recognise the address as currently safe, nothing would
  prevent that frame from changing owner to another VM in the future.

  When Xen detects a PV guest writing a L1TF-PTE, it responds by
  activating shadow paging.  This is normally only used for the live phase
  of migration, and comes with a reasonable overhead.

KFENCE only cares about getting #PF to catch wild accesses; it doesn't
care about the value for non-present mappings.  Use a fully inverted PTE,
to avoid hitting the slow path when running under Xen.

While adjusting the logic, take the opportunity to skip all actions if the
PTE is already in the right state, half the number PVOps callouts, and
skip TLB maintenance on a !P -> P transition which benefits non-Xen cases
too.

Link: https://lkml.kernel.org/r/20260106180426.710013-1-andrew.cooper3@citrix.com
Fixes: 1dc0da6e9e ("x86, kfence: enable KFENCE for x86")
Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Tested-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Jann Horn <jannh@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2026-01-19 12:30:02 -08:00
Lorenzo Stoakes
605f6586ec mm/vma: do not leak memory when .mmap_prepare swaps the file 
The current implementation of mmap() is set up such that a struct file
object is obtained for the input fd in ksys_mmap_pgoff() via fget(), and
its reference count decremented at the end of the function via.  fput().

If a merge can be achieved, we are fine to simply decrement the refcount
on the file.  Otherwise, in __mmap_new_file_vma(), we increment the
reference count on the file via get_file() such that the fput() in
ksys_mmap_pgoff() does not free the now-referenced file object.

The introduction of the f_op->mmap_prepare hook changes things, as it
becomes possible for a driver to replace the file object right at the
beginning of the mmap operation.

The current implementation is buggy if this happens because it
unconditionally calls get_file() on the mapping's file whether or not it
was replaced (and thus whether or not its reference count will be
decremented at the end of ksys_mmap_pgoff()).

This results in a memory leak, and was exposed in commit ab04945f91
("mm: update mem char driver to use mmap_prepare").

This patch solves the problem by explicitly tracking whether we actually
need to call get_file() on the file or not, and only doing so if required.

Link: https://lkml.kernel.org/r/20260112155143.661284-1-lorenzo.stoakes@oracle.com
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Fixes: ab04945f91 ("mm: update mem char driver to use mmap_prepare")
Reported-by: syzbot+bf5de69ebb4bdf86f59f@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/all/6964a92b.050a0220.eaf7.008a.GAE@google.com/
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Jan Kara <jack@suse.cz>
Cc: Jann Horn <jannh@google.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Pedro Falcato <pfalcato@suse.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2026-01-19 12:30:01 -08:00
Matthew Wilcox (Oracle)
b7880cb166 migrate: correct lock ordering for hugetlb file folios 
Syzbot has found a deadlock (analyzed by Lance Yang):

1) Task (5749): Holds folio_lock, then tries to acquire i_mmap_rwsem(read lock).
2) Task (5754): Holds i_mmap_rwsem(write lock), then tries to acquire
folio_lock.

migrate_pages()
  -> migrate_hugetlbs()
    -> unmap_and_move_huge_page()     <- Takes folio_lock!
      -> remove_migration_ptes()
        -> __rmap_walk_file()
          -> i_mmap_lock_read()       <- Waits for i_mmap_rwsem(read lock)!

hugetlbfs_fallocate()
  -> hugetlbfs_punch_hole()           <- Takes i_mmap_rwsem(write lock)!
    -> hugetlbfs_zero_partial_page()
     -> filemap_lock_hugetlb_folio()
      -> filemap_lock_folio()
        -> __filemap_get_folio        <- Waits for folio_lock!

The migration path is the one taking locks in the wrong order according to
the documentation at the top of mm/rmap.c.  So expand the scope of the
existing i_mmap_lock to cover the calls to remove_migration_ptes() too.

This is (mostly) how it used to be after commit c0d0381ade.  That was
removed by 336bf30eb7 for both file & anon hugetlb pages when it should
only have been removed for anon hugetlb pages.

Link: https://lkml.kernel.org/r/20260109041345.3863089-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Fixes: 336bf30eb7 ("hugetlbfs: fix anon huge page migration race")
Reported-by: syzbot+2d9c96466c978346b55f@syzkaller.appspotmail.com
Link: https://lore.kernel.org/all/68e9715a.050a0220.1186a4.000d.GAE@google.com
Debugged-by: Lance Yang <lance.yang@linux.dev>
Acked-by: David Hildenbrand (Red Hat) <david@kernel.org>
Acked-by: Zi Yan <ziy@nvidia.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Byungchul Park <byungchul@sk.com>
Cc: Gregory Price <gourry@gourry.net>
Cc: Jann Horn <jannh@google.com>
Cc: Joshua Hahn <joshua.hahnjy@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Rakie Kim <rakie.kim@sk.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Ying Huang <ying.huang@linux.alibaba.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2026-01-19 12:30:01 -08:00
Gal Pressman
90f3c12324 panic: only warn about deprecated panic_print on write access 
The panic_print_deprecated() warning is being triggered on both read and
write operations to the panic_print parameter.

This causes spurious warnings when users run 'sysctl -a' to list all
sysctl values, since that command reads /proc/sys/kernel/panic_print and
triggers the deprecation notice.

Modify the handlers to only emit the deprecation warning when the
parameter is actually being set:

 - sysctl_panic_print_handler(): check 'write' flag before warning.
 - panic_print_get(): remove the deprecation call entirely.

This way, users are only warned when they actively try to use the
deprecated parameter, not when passively querying system state.

Link: https://lkml.kernel.org/r/20260106163321.83586-1-gal@nvidia.com
Fixes: ee13240cd7 ("panic: add note that panic_print sysctl interface is deprecated")
Fixes: 2683df6539 ("panic: add note that 'panic_print' parameter is deprecated")
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Nimrod Oren <noren@nvidia.com>
Cc: Feng Tang <feng.tang@linux.alibaba.com>
Cc: Joel Granados <joel.granados@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2026-01-19 12:30:01 -08:00
Joanne Koong
f9a49aa302 fs/writeback: skip AS_NO_DATA_INTEGRITY mappings in wait_sb_inodes() 
Above the while() loop in wait_sb_inodes(), we document that we must wait
for all pages under writeback for data integrity.  Consequently, if a
mapping, like fuse, traditionally does not have data integrity semantics,
there is no need to wait at all; we can simply skip these inodes.

This restores fuse back to prior behavior where syncs are no-ops.  This
fixes a user regression where if a system is running a faulty fuse server
that does not reply to issued write requests, this causes wait_sb_inodes()
to wait forever.

Link: https://lkml.kernel.org/r/20260105211737.4105620-2-joannelkoong@gmail.com
Fixes: 0c58a97f91 ("fuse: remove tmp folio for writebacks and internal rb tree")
Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Reported-by: Athul Krishna <athul.krishna.kr@protonmail.com>
Reported-by: J. Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Bernd Schubert <bschubert@ddn.com>
Tested-by: J. Neuschäfer <j.neuschaefer@gmx.net>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Bernd Schubert <bschubert@ddn.com>
Cc: Bonaccorso Salvatore <carnil@debian.org>
Cc: Christian Brauner <brauner@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Jan Kara <jack@suse.cz>
Cc: "Liam R. 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: Miklos Szeredi <miklos@szeredi.hu>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2026-01-19 12:30:01 -08:00
Mathieu Desnoyers
be31340a4c mm: take into account mm_cid size for mm_struct static definitions 
Both init_mm and efi_mm static definitions need to make room for the 2
mm_cid cpumasks.

This fixes possible out-of-bounds accesses to init_mm and efi_mm.

Add a space between # and define for the mm_alloc_cid() definition to make
it consistent with the coding style used in the rest of this header file.

Link: https://lkml.kernel.org/r/20251224173358.647691-4-mathieu.desnoyers@efficios.com
Fixes: af7f588d8f ("sched: Introduce per-memory-map concurrency ID")
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Reviewed-by: Thomas Gleixner <tglx@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Aboorva Devarajan <aboorvad@linux.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Christan König <christian.koenig@amd.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: "Liam R . Howlett" <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Martin Liu <liumartin@google.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mateusz Guzik <mjguzik@gmail.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: SeongJae Park <sj@kernel.org>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Yu Zhao <yuzhao@google.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2026-01-19 12:30:00 -08:00
Mathieu Desnoyers
6ac433f8b2 mm: rename cpu_bitmap field to flexible_array 
The cpu_bitmap flexible array now contains more than just the cpu_bitmap. 
In preparation for changing the static mm_struct definitions to cover for
the additional space required, change the cpu_bitmap type from "unsigned
long" to "char", require an unsigned long alignment of the flexible array,
and rename the field from "cpu_bitmap" to "flexible_array".

Introduce the MM_STRUCT_FLEXIBLE_ARRAY_INIT macro to statically initialize
the flexible array.  This covers the init_mm and efi_mm static
definitions.

This is a preparation step for fixing the missing mm_cid size for static
mm_struct definitions.

Link: https://lkml.kernel.org/r/20251224173358.647691-3-mathieu.desnoyers@efficios.com
Fixes: af7f588d8f ("sched: Introduce per-memory-map concurrency ID")
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Reviewed-by: Thomas Gleixner <tglx@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Aboorva Devarajan <aboorvad@linux.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Christan König <christian.koenig@amd.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: "Liam R . Howlett" <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Martin Liu <liumartin@google.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mateusz Guzik <mjguzik@gmail.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: SeongJae Park <sj@kernel.org>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Yu Zhao <yuzhao@google.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2026-01-19 12:30:00 -08:00
Mathieu Desnoyers
12a6ddfc76 mm: add missing static initializer for init_mm::mm_cid.lock 
Initialize the mm_cid.lock struct member of init_mm.

Link: https://lkml.kernel.org/r/20251224173358.647691-2-mathieu.desnoyers@efficios.com
Fixes: 8cea569ca7 ("sched/mmcid: Use proper data structures")
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Reviewed-by: Thomas Gleixner <tglx@kernel.org>
Cc: Aboorva Devarajan <aboorvad@linux.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Christan König <christian.koenig@amd.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: "Liam R . Howlett" <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Martin Liu <liumartin@google.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mateusz Guzik <mjguzik@gmail.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: SeongJae Park <sj@kernel.org>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Yu Zhao <yuzhao@google.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
 2026-01-19 12:30:00 -08:00
Linus Torvalds
24d479d26b Linux 6.19-rc6 v6.19-rc6 2026-01-18 15:42:45 -08:00
Linus Torvalds
90a855e75a Landlock fix for v6.19-rc6 
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Merge tag 'landlock-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux

Pull landlock fixes from Mickaël Salaün:
 "This fixes TCP handling, tests, documentation, non-audit elided code,
  and minor cosmetic changes"

* tag 'landlock-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux:
  landlock: Clarify documentation for the IOCTL access right
  selftests/landlock: Properly close a file descriptor
  landlock: Improve the comment for domain_is_scoped
  selftests/landlock: Use scoped_base_variants.h for ptrace_test
  selftests/landlock: Fix missing semicolon
  selftests/landlock: Fix typo in fs_test
  landlock: Optimize stack usage when !CONFIG_AUDIT
  landlock: Fix spelling
  landlock: Clean up hook_ptrace_access_check()
  landlock: Improve erratum documentation
  landlock: Remove useless include
  landlock: Fix wrong type usage
  selftests/landlock: NULL-terminate unix pathname addresses
  selftests/landlock: Remove invalid unix socket bind()
  selftests/landlock: Add missing connect(minimal AF_UNSPEC) test
  selftests/landlock: Fix TCP bind(AF_UNSPEC) test case
  landlock: Fix TCP handling of short AF_UNSPEC addresses
  landlock: Fix formatting
 2026-01-18 15:15:47 -08:00
Linus Torvalds
6f32aa9161 cgroup: Another fix for v6.19-rc5 
- Add Chen Ridong as cpuset reviewer.
 
 - Add SPDX license identifiers to cgroup files that were missing them.
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Merge tag 'cgroup-for-6.19-rc5-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

Pull cgroup fixes from Tejun Heo:

 - Add Chen Ridong as cpuset reviewer

 - Add SPDX license identifiers to cgroup files that were missing them

* tag 'cgroup-for-6.19-rc5-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  kernel: cgroup: Add LGPL-2.1 SPDX license ID to legacy_freezer.c
  kernel: cgroup: Add SPDX-License-Identifier lines
  MAINTAINERS: Add Chen Ridong as cpuset reviewer
 2026-01-18 14:30:27 -08:00
Linus Torvalds
f8907398a6 Ext4 bug fixes for 6.19: 
* Fix an inconsistency in structure size on 32-bit platforms caused by padding
      differences for the new EXT4_IOC_[GS]ET_TUNE_SB_PARAM ioctls
    * Fix a buffer leak on the error path when dropping the refcount an xattr
      value stored in an inode
    * Fix missing locking on the error path for the file defragmentation ioctl
      leading to a BUG
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Merge tag 'ext4_for_linus-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 fixes from Ted Ts'o:

 - Fix an inconsistency in structure size on 32-bit platforms caused by
   padding differences for the new EXT4_IOC_[GS]ET_TUNE_SB_PARAM ioctls

 - Fix a buffer leak on the error path when dropping the refcount an
   xattr value stored in an inode

 - Fix missing locking on the error path for the file defragmentation
   ioctl leading to a BUG

* tag 'ext4_for_linus-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: fix iloc.bh leak in ext4_xattr_inode_update_ref
  ext4: add missing down_write_data_sem in mext_move_extent().
  ext4: fix ext4_tune_sb_params padding
 2026-01-18 14:01:20 -08:00
Linus Torvalds
e90b81e8ff dmaengine fixes for v6.19 
Bunch of driver fixes for:
  - dma mask fix for mmp pdma driver
  - Xilinx regmap max register, uninitialized addr_width fix
  - device leak fix for bunch of drivers in the subsystem
  - stm32 dmamux, TI crossbar driver fixes for device & of node leak and
    route allocation cleanup
  - Tegra use afer free fix
  - Memory leak fix in Qualcomm gpi and omap-dma driver
  - compatible fix for apple driver
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Merge tag 'dmaengine-fix-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

Pull dmaengine fixes from Vinod Koul:
 "A bunch of driver fixes for:

   - dma mask fix for mmp pdma driver

   - Xilinx regmap max register, uninitialized addr_width fix

   - device leak fix for bunch of drivers in the subsystem

   - stm32 dmamux, TI crossbar driver fixes for device & of node leak
     and route allocation cleanup

   - Tegra use afer free fix

   - Memory leak fix in Qualcomm gpi and omap-dma driver

   - compatible fix for apple driver"

* tag 'dmaengine-fix-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (25 commits)
  dmaengine: apple-admac: Add "apple,t8103-admac" compatible
  dmaengine: omap-dma: fix dma_pool resource leak in error paths
  dmaengine: qcom: gpi: Fix memory leak in gpi_peripheral_config()
  dmaengine: sh: rz-dmac: Fix rz_dmac_terminate_all()
  dmaengine: xilinx_dma: Fix uninitialized addr_width when "xlnx,addrwidth" property is missing
  dmaengine: tegra-adma: Fix use-after-free
  dmaengine: fsl-edma: Fix clk leak on alloc_chan_resources failure
  dmaengine: mmp_pdma: Fix race condition in mmp_pdma_residue()
  dmaengine: ti: k3-udma: fix device leak on udma lookup
  dmaengine: ti: dma-crossbar: clean up dra7x route allocation error paths
  dmaengine: ti: dma-crossbar: fix device leak on am335x route allocation
  dmaengine: ti: dma-crossbar: fix device leak on dra7x route allocation
  dmaengine: stm32: dmamux: clean up route allocation error labels
  dmaengine: stm32: dmamux: fix OF node leak on route allocation failure
  dmaengine: stm32: dmamux: fix device leak on route allocation
  dmaengine: sh: rz-dmac: fix device leak on probe failure
  dmaengine: lpc32xx-dmamux: fix device leak on route allocation
  dmaengine: lpc18xx-dmamux: fix device leak on route allocation
  dmaengine: idxd: fix device leaks on compat bind and unbind
  dmaengine: dw: dmamux: fix OF node leak on route allocation failure
  ...
 2026-01-18 13:38:31 -08:00
Linus Torvalds
3271b25e3d phy fixes for 6.19 
Bunch of driver fixes:
  - Freescale typec orientation switch fix, clearing register fix, assertion
    of phy reset during power on
  - Qualcomm pcs register clear before using
  - stm one off fix
  - TI runtimepm error handling, regmap leak fixes
  - Rockchip gadget mode disconnection and disruption fixes
  - Tegra register level fix
  - Broadcom pointer cast warning fix
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Merge tag 'phy-fixes-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy

Pull phy fixes from Vinod Koul:
 "A bunch of driver fixes:

   - Freescale typec orientation switch fix, clearing register fix,
     assertion of phy reset during power on

   - Qualcomm pcs register clear before using

   - stm one off fix

   - TI runtimepm error handling, regmap leak fixes

   - Rockchip gadget mode disconnection and disruption fixes

   - Tegra register level fix

   - Broadcom pointer cast warning fix"

* tag 'phy-fixes-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy:
  phy: freescale: imx8m-pcie: assert phy reset during power on
  phy: rockchip: inno-usb2: Fix a double free bug in rockchip_usb2phy_probe()
  phy: broadcom: ns-usb3: Fix Wvoid-pointer-to-enum-cast warning (again)
  phy: tegra: xusb: Explicitly configure HS_DISCON_LEVEL to 0x7
  phy: rockchip: inno-usb2: fix communication disruption in gadget mode
  phy: rockchip: inno-usb2: fix disconnection in gadget mode
  phy: ti: gmii-sel: fix regmap leak on probe failure
  phy: sparx5-serdes: make it selectable for ARCH_LAN969X
  phy: ti: da8xx-usb: Handle devm_pm_runtime_enable() errors
  phy: stm32-usphyc: Fix off by one in probe()
  phy: qcom-qusb2: Fix NULL pointer dereference on early suspend
  phy: fsl-imx8mq-usb: Clear the PCS_TX_SWING_FULL field before using it
  dt-bindings: phy: qcom,sc8280xp-qmp-pcie-phy: Update pcie phy bindings for qcs8300
  phy: fsl-imx8mq-usb: fix typec orientation switch when built as module
 2026-01-18 13:18:40 -08:00
Linus Torvalds
56bc8a18aa soundwire fix for 6.19 
- Single off-by-one fix for allocating slave id
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Merge tag 'soundwire-6.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire

Pull soundwire fix from Vinod Koul:

 - Single off-by-one fix for allocating slave id

* tag 'soundwire-6.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
  soundwire: bus: fix off-by-one when allocating slave IDs
 2026-01-18 12:29:12 -08:00
Linus Torvalds
27983960f0 USB fixes for 6.19-rc6 
Here are some small USB fixes and new device ids for 6.19-rc6
 
 Included in here are:
   - new usb-serial device ids
   - dwc3-apple driver fixes to get things working properly on that
     hardware platform
   - ohci/uhci platfrom driver module soft-deps with ehci to remove a
     runtime warning that sometimes shows up on some platforms.
   - quirk for broken devices that can not handle reading the BOS
     descriptor from them without going crazy.
   - usb-serial driver fixes
   - xhci driver fixes
   - usb gadget driver fixes
 
 All of these except for the last xhci fix has been in linux-next for a
 while.  The xhci fix has been reported by others to solve the issue for
 them, so should be ok.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some small USB fixes and new device ids for 6.19-rc6

  Included in here are:

   - new usb-serial device ids

   - dwc3-apple driver fixes to get things working properly on that
     hardware platform

   - ohci/uhci platfrom driver module soft-deps with ehci to remove a
     runtime warning that sometimes shows up on some platforms.

   - quirk for broken devices that can not handle reading the BOS
     descriptor from them without going crazy.

   - usb-serial driver fixes

   - xhci driver fixes

   - usb gadget driver fixes

  All of these except for the last xhci fix has been in linux-next for a
  while. The xhci fix has been reported by others to solve the issue for
  them, so should be ok"

* tag 'usb-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  xhci: sideband: don't dereference freed ring when removing sideband endpoint
  usb: gadget: uvc: retry vb2_reqbufs() with vb_vmalloc_memops if use_sg fail
  usb: gadget: uvc: return error from uvcg_queue_init()
  usb: gadget: uvc: fix interval_duration calculation
  usb: gadget: uvc: fix req_payload_size calculation
  usb: dwc3: apple: Ignore USB role switches to the active role
  usb: host: xhci-tegra: Use platform_get_irq_optional() for wake IRQs
  USB: OHCI/UHCI: Add soft dependencies on ehci_platform
  usb: dwc3: apple: Set USB2 PHY mode before dwc3 init
  USB: serial: f81232: fix incomplete serial port generation
  USB: serial: ftdi_sio: add support for PICAXE AXE027 cable
  USB: serial: option: add Telit LE910 MBIM composition
  usb: core: add USB_QUIRK_NO_BOS for devices that hang on BOS descriptor
  dt-bindings: usb: qcom,dwc3: Correct MSM8994 interrupts
  dt-bindings: usb: qcom,dwc3: Correct IPQ5018 interrupts
  tcpm: allow looking for role_sw device in the main node
  usb: dwc3: Check for USB4 IP_NAME
 2026-01-18 12:09:13 -08:00
Linus Torvalds
5d1765a96c i2c-for-6.19-rc6 
riic, imx-lpi2c: suspend/resume fixes
 qcom-geni: DMA handling fix
 iproc: correct DT binding description
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Merge tag 'i2c-for-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:

 - riic, imx-lpi2c: suspend/resume fixes

 - qcom-geni: DMA handling fix

 - iproc: correct DT binding description

* tag 'i2c-for-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: imx-lpi2c: change to PIO mode in system-wide suspend/resume progress
  i2c: qcom-geni: make sure I2C hub controllers can't use SE DMA
  i2c: riic: Move suspend handling to NOIRQ phase
  dt-bindings: i2c: brcm,iproc-i2c: Allow 2 reg entries for brcm,iproc-nic-i2c
 2026-01-18 12:00:35 -08:00
Linus Torvalds
93fc4e044a - Make sure the memory-mapped memory controller registers BAR gets unmapped 
when the driver memory allocation fails. Fix that in both x38 and i3200 EDAC
   drivers as former has copied the bug from the latter, it looks like
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Merge tag 'edac_urgent_for_v6.19_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras

Pull EDAC fixes from Borislav Petkov:
 "Make sure the memory-mapped memory controller registers BAR gets
  unmapped when the driver memory allocation fails

  Fix that in both x38 and i3200 EDAC drivers as former has copied the
  bug from the latter, it looks like"

* tag 'edac_urgent_for_v6.19_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
  EDAC/x38: Fix a resource leak in x38_probe1()
  EDAC/i3200: Fix a resource leak in i3200_probe1()
 2026-01-18 11:39:56 -08:00
Linus Torvalds
e503f539dc Misc x86 fixes: 
- Fix resctrl initialization on Hygon CPUs
 
  - Fix resctrl memory bandwidth counters
    on Hygon CPUs
 
  - Fix x86 self-tests build bug
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull misc x86 fixes from Ingo Molnar:

 - Fix resctrl initialization on Hygon CPUs

 - Fix resctrl memory bandwidth counters on Hygon CPUs

 - Fix x86 self-tests build bug

* tag 'x86-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  selftests/x86: Add selftests include path for kselftest.h after centralization
  x86/resctrl: Fix memory bandwidth counter width for Hygon
  x86/resctrl: Add missing resctrl initialization for Hygon
 2026-01-18 11:34:11 -08:00
Linus Torvalds
b671c1dad2 Fix the update_needs_ipi() check in the hrtimer code that 
may result in incorrect skipping of hrtimer IPIs.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'timers-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer fix from Ingo Molnar:
 "Fix the update_needs_ipi() check in the hrtimer code that may result
  in incorrect skipping of hrtimer IPIs"

* tag 'timers-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  hrtimer: Fix softirq base check in update_needs_ipi()
 2026-01-18 10:56:32 -08:00
Linus Torvalds
837c8180e3 Misc DL scheduler fixes, mainly for a new category of bugs that were 
discovered and fixed recently:
 
  - Fix a race condition in the DL server
 
  - Fix a DL server bug which can result in incorrectly going
    idle when there's work available
 
  - Fix DL server bug which triggers a WARN() due to broken
    get_prio_dl() logic and subsequent misbehavior
 
  - Fix double update_rq_clock() calls
 
  - Fix setscheduler() assumption about static priorities
 
  - Make sure balancing callbacks are always called
 
  - Plus a handful of preparatory commits for the fixes.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Misc deadline scheduler fixes, mainly for a new category of bugs that
  were discovered and fixed recently:

   - Fix a race condition in the DL server

   - Fix a DL server bug which can result in incorrectly going idle when
     there's work available

   - Fix DL server bug which triggers a WARN() due to broken
     get_prio_dl() logic and subsequent misbehavior

   - Fix double update_rq_clock() calls

   - Fix setscheduler() assumption about static priorities

   - Make sure balancing callbacks are always called

   - Plus a handful of preparatory commits for the fixes"

* tag 'sched-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/deadline: Use ENQUEUE_MOVE to allow priority change
  sched: Deadline has dynamic priority
  sched: Audit MOVE vs balance_callbacks
  sched: Fold rq-pin swizzle into __balance_callbacks()
  sched/deadline: Avoid double update_rq_clock()
  sched/deadline: Ensure get_prio_dl() is up-to-date
  sched/deadline: Fix server stopping with runnable tasks
  sched: Provide idle_rq() helper
  sched/deadline: Fix potential race in dl_add_task_root_domain()
  sched/deadline: Remove unnecessary comment in dl_add_task_root_domain()
 2026-01-18 10:17:40 -08:00
Linus Torvalds
cee4757965 Fix two objtool build failures that trigger in uncommon build 
environments.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool fixes from Ingo Molnar:
 "Fix two objtool build failures that trigger in uncommon build
  environments"

* tag 'objtool-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: fix build failure due to missing libopcodes check
  objtool: fix compilation failure with the x32 toolchain
 2026-01-18 09:09:32 -08:00
Linus Torvalds
8562711ac0 Fix a riscv-imsic irqchip driver regression. 
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'irq-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq fix from Ingo Molnar:
 "Fix a riscv-imsic irqchip driver regression"

* tag 'irq-urgent-2026-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/riscv-imsic: Revert "Remove redundant irq_data lookups"
 2026-01-18 09:08:27 -08:00
Yang Erkun
d250bdf531 ext4: fix iloc.bh leak in ext4_xattr_inode_update_ref 
The error branch for ext4_xattr_inode_update_ref forget to release the
refcount for iloc.bh. Find this when review code.

Fixes: 57295e8354 ("ext4: guard against EA inode refcount underflow in xattr update")
Signed-off-by: Yang Erkun <yangerkun@huawei.com>
Reviewed-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://patch.msgid.link/20251213055706.3417529-1-yangerkun@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
 2026-01-18 11:23:10 -05:00
Julian Sun
0ef7ef4227 ext4: add missing down_write_data_sem in mext_move_extent(). 
Commit 962e8a01ea ("ext4: introduce mext_move_extent()") attempts to
call ext4_swap_extents() on the failure path to recover the swapped
extents, but fails to acquire locks for the two inode->i_data_sem,
triggering the BUG_ON statement in ext4_swap_extents().

This issue can be fixed by calling ext4_double_down_write_data_sem()
before ext4_swap_extents().

Signed-off-by: Julian Sun <sunjunchao@bytedance.com>
Reported-by: syzbot+4ea6bd8737669b423aae@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/all/69368649.a70a0220.38f243.0093.GAE@google.com/
Fixes: 962e8a01ea ("ext4: introduce mext_move_extent()")
Reviewed-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Link: https://patch.msgid.link/20251208123713.1971068-1-sunjunchao@bytedance.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
 2026-01-18 11:23:10 -05:00
Arnd Bergmann
cd16edba1c ext4: fix ext4_tune_sb_params padding 
The padding at the end of struct ext4_tune_sb_params is architecture
specific and in particular is different between x86-32 and x86-64,
since the __u64 member only enforces struct alignment on the latter.

This shows up as a new warning when test-building the headers with
-Wpadded:

include/linux/ext4.h:144:1: error: padding struct size to alignment boundary with 4 bytes [-Werror=padded]

All members inside the structure are naturally aligned, so the only
difference here is the amount of padding at the end. Make the padding
explicit, to have a consistent sizeof(struct ext4_tune_sb_params) of
232 on all architectures and avoid adding compat ioctl handling for
EXT4_IOC_GET_TUNE_SB_PARAM/EXT4_IOC_SET_TUNE_SB_PARAM.

This is an ABI break on x86-32 but hopefully this can go into 6.18.y early
enough as a fixup so no actual users will be affected.  Alternatively, the
kernel could handle the ioctl commands for both sizes (232 and 228 bytes)
on all architectures.

Fixes: 04a91570ac ("ext4: implemet new ioctls to set and get superblock parameters")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20251204101914.1037148-1-arnd@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
 2026-01-18 11:22:53 -05:00
Linus Torvalds
e84d960149 for-6.19-rc5-tag 
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Merge tag 'for-6.19-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:

 - with large folios in use, fix partial incorrect update of a reflinked
   range

 - fix potential deadlock in iget when lookup fails and eviction is
   needed

 - in send, validate inline extent type while detecting file holes

 - fix memory leak after an error when creating a space info

 - remove zone statistics from sysfs again, the output size limitations
   make it unusable, we'll do it in another way in another release

 - test fixes:
     - return proper error codes from block remapping tests
     - fix tree root leaks in qgroup tests after errors

* tag 'for-6.19-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: remove zoned statistics from sysfs
  btrfs: fix memory leaks in create_space_info() error paths
  btrfs: invalidate pages instead of truncate after reflinking
  btrfs: update the Kconfig string for CONFIG_BTRFS_EXPERIMENTAL
  btrfs: send: check for inline extents in range_is_hole_in_parent()
  btrfs: tests: fix return 0 on rmap test failure
  btrfs: tests: fix root tree leak in btrfs_test_qgroups()
  btrfs: release path before iget_failed() in btrfs_read_locked_inode()
 2026-01-17 19:29:32 -08:00
Linus Torvalds
47622aa8b6 LoongArch fixes for v6.19-rc6 
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Merge tag 'loongarch-fixes-6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch fixes from Huacai Chen:
 "Remove redundant code in head.S, fix PMU counter allocation for mixed-
  type event groups, fix a lot of dts build warnings, and fix kvm_device
  memory leaks"

* tag 'loongarch-fixes-6.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
  LoongArch: KVM: Fix kvm_device leak in kvm_pch_pic_destroy()
  LoongArch: KVM: Fix kvm_device leak in kvm_eiointc_destroy()
  LoongArch: KVM: Fix kvm_device leak in kvm_ipi_destroy()
  LoongArch: dts: loongson-2k1000: Fix i2c-gpio node names
  LoongArch: dts: loongson-2k2000: Add default interrupt controller address cells
  LoongArch: dts: loongson-2k1000: Add default interrupt controller address cells
  LoongArch: dts: loongson-2k0500: Add default interrupt controller address cells
  LoongArch: dts: Describe PCI sideband IRQ through interrupt-extended
  LoongArch: Fix PMU counter allocation for mixed-type event groups
  LoongArch: Remove redundant code in head.S
 2026-01-17 19:24:48 -08:00
Linus Torvalds
d12453c7e2 arm64/mpam fix to use non-atomic bitops on struct mmap_props member 
(atomicity not required). For kunit testing, the structure is packed to
 avoid memcmp() errors but this affects atomic bitops as they have strict
 alignment requirements.
 
 Also remove a duplicate include in the mpam driver.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:
 "An arm64/mpam fix to use non-atomic bitops on struct mmap_props member
  (atomicity not required).

  For kunit testing, the structure is packed to avoid memcmp() errors
  but this affects atomic bitops as they have strict alignment
  requirements.

  Also remove a duplicate include in the mpam driver"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm_mpam: Use non-atomic bitops when modifying feature bitmap
  arm_mpam: Remove duplicate linux/srcu.h header
 2026-01-17 08:52:45 -08:00
Bala-Vignesh-Reddy
d9b40d7262 selftests/x86: Add selftests include path for kselftest.h after centralization 
The previous change centralizing kselftest.h include path in lib.mk caused x86
selftests to fail, as x86 Makefile overwrites CFLAGS using ":=", dropping the
include path added in lib.mk. Therefore, helpers.h could not find kselftest.h
during compilation.

Fix this by adding the tools/testing/sefltest to CFLAGS in x86 Makefile.

  [ bp: Correct commit ID in Fixes: ]

Fixes: e6fbd1759c ("selftests: complete kselftest include centralization")
Closes: https://lore.kernel.org/lkml/CA+G9fYvKjQcCBMfXA-z2YuL2L+3Qd-pJjEUDX8PDdz2-EEQd=Q@mail.gmail.com/T/#m83fd330231287fc9d6c921155bee16c591db7360
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Signed-off-by: Bala-Vignesh-Reddy <reddybalavignesh9979@gmail.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Anders Roxell <anders.roxell@linaro.org>
Tested-by: Brendan Jackman <jackmanb@google.com>
Link: https://patch.msgid.link/20251022062948.162852-1-reddybalavignesh9979@gmail.com
 2026-01-17 12:22:27 +01:00
Linus Torvalds
d3eeb99bbc block-6.19-20260116 
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Merge tag 'block-6.19-20260116' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

Pull block fixes from Jens Axboe:

 - NVMe pull request via Keith:
     - Device quirk to disable faulty temperature (Ilikara)
     - TCP target null pointer fix from bad host protocol usage (Shivam)
     - Add apple,t8103-nvme-ans2 as a compatible apple controller
       (Janne)
     - FC tagset leak fix (Chaitanya)
     - TCP socket deadlock fix (Hannes)
     - Target name buffer overrun fix (Shin'ichiro)

 - Fix for an underflow for rnbd during device unmap

 - Zero the non-PI part of the auto integrity buffer

 - Fix for a configfs memory leak in the null block driver

* tag 'block-6.19-20260116' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  rnbd-clt: fix refcount underflow in device unmap path
  nvme: fix PCIe subsystem reset controller state transition
  nvmet: do not copy beyond sybsysnqn string length
  nvmet-tcp: fixup hang in nvmet_tcp_listen_data_ready()
  null_blk: fix kmemleak by releasing references to fault configfs items
  block: zero non-PI portion of auto integrity buffer
  nvme-fc: release admin tagset if init fails
  nvme-apple: add "apple,t8103-nvme-ans2" as compatible
  nvme-tcp: fix NULL pointer dereferences in nvmet_tcp_build_pdu_iovec
  nvme-pci: disable secondary temp for Wodposit WPBSNM8
 2026-01-16 20:59:46 -08:00
Linus Torvalds
216c7a0326 io_uring-6.19-20260116 
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Merge tag 'io_uring-6.19-20260116' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

Pull io_uring fix from Jens Axboe:
 "Just a single fix moving local task_work inside the cancelation loop,
  rather than only before cancelations.

  If any cancelations generate task_work, we do need to re-run it"

* tag 'io_uring-6.19-20260116' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  io_uring: move local task_work in exit cancel loop
 2026-01-16 20:56:56 -08:00
Qiang Ma
1cf342a7c3 LoongArch: KVM: Fix kvm_device leak in kvm_pch_pic_destroy() 
In kvm_ioctl_create_device(), kvm_device has allocated memory,
kvm_device->destroy() seems to be supposed to free its kvm_device
struct, but kvm_pch_pic_destroy() is not currently doing this, that
would lead to a memory leak.

So, fix it.

Cc: stable@vger.kernel.org
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Qiang Ma <maqianga@uniontech.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
 2026-01-17 10:57:03 +08:00
Qiang Ma
7d8553fc75 LoongArch: KVM: Fix kvm_device leak in kvm_eiointc_destroy() 
In kvm_ioctl_create_device(), kvm_device has allocated memory,
kvm_device->destroy() seems to be supposed to free its kvm_device
struct, but kvm_eiointc_destroy() is not currently doing this, that
would lead to a memory leak.

So, fix it.

Cc: stable@vger.kernel.org
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Qiang Ma <maqianga@uniontech.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
 2026-01-17 10:57:02 +08:00
Qiang Ma
0bf58cb728 LoongArch: KVM: Fix kvm_device leak in kvm_ipi_destroy() 
In kvm_ioctl_create_device(), kvm_device has allocated memory,
kvm_device->destroy() seems to be supposed to free its kvm_device
struct, but kvm_ipi_destroy() is not currently doing this, that
would lead to a memory leak.

So, fix it.

Cc: stable@vger.kernel.org
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Qiang Ma <maqianga@uniontech.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
 2026-01-17 10:57:02 +08:00
Binbin Zhou
14ea5a3625 LoongArch: dts: loongson-2k1000: Fix i2c-gpio node names 
The binding wants the node to be named "i2c-number", but those are named
"i2c-gpio-number" instead.

Thus rename those to i2c-0, i2c-1 to adhere to the binding and suppress
dtbs_check warnings.

Cc: stable@vger.kernel.org
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
 2026-01-17 10:56:53 +08:00
Binbin Zhou
e65df3f77e LoongArch: dts: loongson-2k2000: Add default interrupt controller address cells 
Add missing address-cells 0 to the Local I/O, Extend I/O and PCH-PIC
Interrupt Controller node to silence W=1 warning:

  loongson-2k2000.dtsi:364.5-49: Warning (interrupt_map): /bus@10000000/pcie@1a000000/pcie@9,0:interrupt-map:
    Missing property '#address-cells' in node /bus@10000000/interrupt-controller@10000000, using 0 as fallback

Value '0' is correct because:
1. The LIO/EIO/PCH interrupt controller does not have children,
2. interrupt-map property (in PCI node) consists of five components and
   the fourth component "parent unit address", which size is defined by
   '#address-cells' of the node pointed to by the interrupt-parent
   component, is not used (=0)

Cc: stable@vger.kernel.org
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
 2026-01-17 10:56:53 +08:00
Binbin Zhou
81e8cb7e50 LoongArch: dts: loongson-2k1000: Add default interrupt controller address cells 
Add missing address-cells 0 to the Local I/O interrupt controller node
to silence W=1 warning:

  loongson-2k1000.dtsi:498.5-55: Warning (interrupt_map): /bus@10000000/pcie@1a000000/pcie@9,0:interrupt-map:
    Missing property '#address-cells' in node /bus@10000000/interrupt-controller@1fe01440, using 0 as fallback

Value '0' is correct because:
1. The Local I/O interrupt controller does not have children,
2. interrupt-map property (in PCI node) consists of five components and
   the fourth component "parent unit address", which size is defined by
   '#address-cells' of the node pointed to by the interrupt-parent
   component, is not used (=0)

Cc: stable@vger.kernel.org
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
 2026-01-17 10:56:53 +08:00
Binbin Zhou
c4461754e6 LoongArch: dts: loongson-2k0500: Add default interrupt controller address cells 
Add missing address-cells 0 to the Local I/O and Extend I/O interrupt
controller node to silence W=1 warning:

  loongson-2k0500.dtsi:513.5-51: Warning (interrupt_map): /bus@10000000/pcie@1a000000/pcie@0,0:interrupt-map:
    Missing property '#address-cells' in node /bus@10000000/interrupt-controller@1fe11600, using 0 as fallback

Value '0' is correct because:
1. The Local I/O & Extend I/O interrupt controller do not have children,
2. interrupt-map property (in PCI node) consists of five components and
   the fourth component "parent unit address", which size is defined by
   '#address-cells' of the node pointed to by the interrupt-parent
   component, is not used (=0)

Cc: stable@vger.kernel.org
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
 2026-01-17 10:56:52 +08:00
Yao Zi
762cf75bec LoongArch: dts: Describe PCI sideband IRQ through interrupt-extended 
SoC integrated peripherals on LS2K1000 and LS2K2000 could be discovered
as PCI devices, but require sideband interrupts to function, which are
previously described by interrupts and interrupt-parent properties.

However, pci/pci-device.yaml allows interrupts property to only specify
PCI INTx interrupts, not sideband ones. Convert these devices to use
interrupt-extended property, which describes sideband interrupts used by
PCI devices since dt-schema commit e6ea659d2baa ("schemas: pci-device:
Allow interrupts-extended for sideband interrupts"), eliminating
dtbs_check warnings.

Cc: stable@vger.kernel.org
Fixes: 30a5532a32 ("LoongArch: dts: DeviceTree for Loongson-2K1000")
Signed-off-by: Yao Zi <me@ziyao.cc>
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
 2026-01-17 10:56:52 +08:00
Lisa Robinson
a91f86e270 LoongArch: Fix PMU counter allocation for mixed-type event groups 
When validating a perf event group, validate_group() unconditionally
attempts to allocate hardware PMU counters for the leader, sibling
events and the new event being added.

This is incorrect for mixed-type groups. If a PERF_TYPE_SOFTWARE event
is part of the group, the current code still tries to allocate a hardware
PMU counter for it, which can wrongly consume hardware PMU resources and
cause spurious allocation failures.

Fix this by only allocating PMU counters for hardware events during group
validation, and skipping software events.

A trimmed down reproducer is as simple as this:

  #include <stdio.h>
  #include <assert.h>
  #include <unistd.h>
  #include <string.h>
  #include <sys/syscall.h>
  #include <linux/perf_event.h>

  int main (int argc, char *argv[])
  {
  	struct perf_event_attr attr = { 0 };
  	int fds[5];

  	attr.disabled = 1;
  	attr.exclude_kernel = 1;
  	attr.exclude_hv = 1;
  	attr.read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
  		PERF_FORMAT_TOTAL_TIME_RUNNING | PERF_FORMAT_ID | PERF_FORMAT_GROUP;
  	attr.size = sizeof (attr);

  	attr.type = PERF_TYPE_SOFTWARE;
  	attr.config = PERF_COUNT_SW_DUMMY;
  	fds[0] = syscall (SYS_perf_event_open, &attr, 0, -1, -1, 0);
  	assert (fds[0] >= 0);

  	attr.type = PERF_TYPE_HARDWARE;
  	attr.config = PERF_COUNT_HW_CPU_CYCLES;
  	fds[1] = syscall (SYS_perf_event_open, &attr, 0, -1, fds[0], 0);
  	assert (fds[1] >= 0);

  	attr.type = PERF_TYPE_HARDWARE;
  	attr.config = PERF_COUNT_HW_INSTRUCTIONS;
  	fds[2] = syscall (SYS_perf_event_open, &attr, 0, -1, fds[0], 0);
  	assert (fds[2] >= 0);

  	attr.type = PERF_TYPE_HARDWARE;
  	attr.config = PERF_COUNT_HW_BRANCH_MISSES;
  	fds[3] = syscall (SYS_perf_event_open, &attr, 0, -1, fds[0], 0);
  	assert (fds[3] >= 0);

  	attr.type = PERF_TYPE_HARDWARE;
  	attr.config = PERF_COUNT_HW_CACHE_REFERENCES;
  	fds[4] = syscall (SYS_perf_event_open, &attr, 0, -1, fds[0], 0);
  	assert (fds[4] >= 0);

  	printf ("PASSED\n");

  	return 0;
  }

Cc: stable@vger.kernel.org
Fixes: b37042b2bb ("LoongArch: Add perf events support")
Signed-off-by: Lisa Robinson <lisa@bytefly.space>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
 2026-01-17 10:56:43 +08:00
Linus Torvalds
39d3389331 drm-fixes for 6.19-rc6 
Core Changes:
 - take gem lock when preallocating in gpuvm.
 - add single byte read fallback to dp for broken usb-c adapters
 - remove duplicate drm_sysfb declarations
 
 Driver Changes:
 - i915: compiler noise fix
 - amdgpu/amdkfd: pile of fixes all over
 - vmwgfx: v10 cursor regression fix, other fixes
 - rockchip: waiting for cfgdone regression fix, other fixes
 - gud: fix oops on disconnect
 - simple-panel: regression fix when connector is not set, fix for
   DataImage SCF0700C48GGU18
 - nouveau: cursor handling locking fix
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Merge tag 'drm-fixes-2026-01-16' of https://gitlab.freedesktop.org/drm/kernel

Pull drm fixes from Simona Vetter:
 "We've had nothing aside of a compiler noise fix until today, when the
  amd and drm-misc fixes showed up after Dave already went into weekend
  mode. So it's on me to push these out, since there's a bunch of
  important fixes in here I think that shouldn't be delayed for a week.

  Core Changes:
   - take gem lock when preallocating in gpuvm
   - add single byte read fallback to dp for broken usb-c adapters
   - remove duplicate drm_sysfb declarations

  Driver Changes:
   - i915: compiler noise fix
   - amdgpu/amdkfd: pile of fixes all over
   - vmwgfx:
      - v10 cursor regression fix
      - other fixes
   - rockchip:
      - waiting for cfgdone regression fix
      - other fixes
   - gud: fix oops on disconnect
   - simple-panel:
      - regression fix when connector is not set
      - fix for DataImage SCF0700C48GGU18
   - nouveau: cursor handling locking fix"

* tag 'drm-fixes-2026-01-16' of https://gitlab.freedesktop.org/drm/kernel: (33 commits)
  drm/amd/display: Add an hdmi_hpd_debounce_delay_ms module
  drm/amdgpu/userq: Fix fence reference leak on queue teardown v2
  drm/amdkfd: No need to suspend whole MES to evict process
  Revert "drm/amdgpu: don't attach the tlb fence for SI"
  drm/amdgpu: validate the flush_gpu_tlb_pasid()
  drm/amd/pm: fix smu overdrive data type wrong issue on smu 14.0.2
  drm/amd/display: Initialise backlight level values from hw
  drm/amd/display: Bump the HDMI clock to 340MHz
  drm/amd/display: Show link name in PSR status message
  drm/amdkfd: fix a memory leak in device_queue_manager_init()
  drm/amdgpu: make sure userqs are enabled in userq IOCTLs
  drm/amdgpu: Use correct address to setup gart page table for vram access
  Revert duplicate "drm/amdgpu: disable peer-to-peer access for DCC-enabled GC12 VRAM surfaces"
  drm/amd: Clean up kfd node on surprise disconnect
  drm/amdgpu: fix drm panic null pointer when driver not support atomic
  drm/amdgpu: Fix gfx9 update PTE mtype flag
  drm/sysfb: Remove duplicate declarations
  drm/nouveau/kms/nv50-: Assert we hold nv50_disp->lock in nv50_head_flush_*
  drm/nouveau/disp/nv50-: Set lock_core in curs507a_prepare
  drm/gud: fix NULL fb and crtc dereferences on USB disconnect
  ...
 2026-01-16 13:48:18 -08:00
Linus Torvalds
6782a30d20 cxl fixes for v6.19-rc6 
- Recognize all ZONE_DEVICE users as physaddr consumers
 - Fix format string for extended_linear_cache_size_show()
 - Fix target list setup for multiple decoders sharing the same
   downstream port
 - Restore HBIW check before derefernce platform data
 - Fix potential infinite loop in __cxl_dpa_reserve()
 - Check for invalid addresses returned from translation functions on
   error.
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Merge tag 'cxl-fixes-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl

Pull Compute Express Link (CXL) fixes from Dave Jiang:

 - Recognize all ZONE_DEVICE users as physaddr consumers

 - Fix format string for extended_linear_cache_size_show()

 - Fix target list setup for multiple decoders sharing the same
   downstream port

 - Restore HBIW check before derefernce platform data

 - Fix potential infinite loop in __cxl_dpa_reserve()

 - Check for invalid addresses returned from translation functions on
   error

* tag 'cxl-fixes-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
  cxl: Check for invalid addresses returned from translation functions on errors
  cxl/hdm: Fix potential infinite loop in __cxl_dpa_reserve()
  cxl/acpi: Restore HBIW check before dereferencing platform_data
  cxl/port: Fix target list setup for multiple decoders sharing the same dport
  cxl/region: fix format string for resource_size_t
  x86/kaslr: Recognize all ZONE_DEVICE users as physaddr consumers
 2026-01-16 13:09:28 -08:00
Linus Torvalds
d815858300 pci-v6.19-fixes-3 
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Merge tag 'pci-v6.19-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci

Pull PCI fix from Bjorn Helgaas:

 - Add a pci_free_irq_vectors() stub to fix a build issue when
   CONFIG_PCI is not set (Boqun Feng)

* tag 'pci-v6.19-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
  PCI: Provide pci_free_irq_vectors() stub
 2026-01-16 12:24:22 -08:00
Linus Torvalds
b62ce2547f Power management fixes for 6.19-rc6 
- Fix a memory leak in em_create_pd() error path (Malaya Kumar Rout)
 
  - Fix stale description of the cost field in struct em_perf_state to
    reflect the current code (Yaxiong Tian)
 
  - Fix and revamp the energy model YNL specification added recently
    along with the energy model netlink interface (Changwoo Min)
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Merge tag 'pm-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix an error path memory leak in the energy model management
  code, fix a kerneldoc comment in it, and fix and revamp the energy
  model YNL specification added recently along with the new energy model
  management netlink interface (that received feedback after being
  added):

   - Fix a memory leak in em_create_pd() error path (Malaya Kumar Rout)

   - Fix stale description of the cost field in struct em_perf_state to
     reflect the current code (Yaxiong Tian)

   - Fix and revamp the energy model YNL specification added recently
     along with the energy model netlink interface (Changwoo Min)"

* tag 'pm-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM: EM: Add dump to get-perf-domains in the EM YNL spec
  PM: EM: Change cpus' type from string to u64 array in the EM YNL spec
  PM: EM: Rename em.yaml to dev-energymodel.yaml
  PM: EM: Fix yamllint warnings in the EM YNL spec
  PM: EM: Fix memory leak in em_create_pd() error path
  PM: EM: Fix incorrect description of the cost field in struct em_perf_state
 2026-01-16 12:08:19 -08:00
Simona Vetter
9dd1f5f3eb drm-misc-fixes for v6.19-rc6: 
vmwgfx:
 - Fix hw regression from refactoring cursor handling on v10 'hardware'
 - Fix warnings in destructor by merging the 2 release functions
 - kernel doc fix
 - error handling in vmw_compat_shader_add()
 
 rockchip:
 - fix vop2 polling
 - fix regression waiting for cfgdone without config change
 - fix warning when enabling encoder
 
 core:
 - take gem lock when preallocating in gpuvm.
 - add single byte read fallback to dp for broken usb-c adapters
 - remove duplicate drm_sysfb declarations
 
 gud:
 - Fix oops on usb disconnect
 
 Simple panel:
 - Re-add fallback when connector is not set to fix regressions
 - Set correct type in DataImage SCF0700C48GGU18
 
 nouveau:
 - locking fixes for cursor handling.
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Merge tag 'drm-misc-fixes-2026-01-16' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes

drm-misc-fixes for v6.19-rc6:

vmwgfx:
- Fix hw regression from refactoring cursor handling on v10 'hardware'
- Fix warnings in destructor by merging the 2 release functions
- kernel doc fix
- error handling in vmw_compat_shader_add()

rockchip:
- fix vop2 polling
- fix regression waiting for cfgdone without config change
- fix warning when enabling encoder

core:
- take gem lock when preallocating in gpuvm.
- add single byte read fallback to dp for broken usb-c adapters
- remove duplicate drm_sysfb declarations

gud:
- Fix oops on usb disconnect

Simple panel:
- Re-add fallback when connector is not set to fix regressions
- Set correct type in DataImage SCF0700C48GGU18

nouveau:
- locking fixes for cursor handling.

Signed-off-by: Simona Vetter <simona.vetter@ffwll.ch>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patch.msgid.link/ce0acfe2-9c1a-42b7-8782-f1e7f34b8544@linux.intel.com
 2026-01-16 20:27:21 +01:00
Linus Torvalds
e547d4f733 ACPI support fixes for 6.19-rc6 
Add checks missed by a previous recent update to the ACPI suspend-to-idle
 code and add a debug module parameter to it to work around a platform
 firmware issue exposed by that update (Rafael Wysocki)
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Merge tag 'acpi-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
 "Add checks missed by a previous recent update to the ACPI
  suspend-to-idle code and add a debug module parameter to it
  to work around a platform firmware issue exposed by that
  update (Rafael Wysocki)"

* tag 'acpi-6.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: PM: s2idle: Add module parameter for LPS0 constraints checking
  ACPI: PM: s2idle: Add missing checks to acpi_s2idle_begin_lps0()
 2026-01-16 11:03:17 -08:00