The SLAB_MEM_SPREAD flag used to be implemented in SLAB, which was
removed as of v6.8-rc1, so it became a dead flag since the commit
16a1d96835 ("mm/slab: remove mm/slab.c and slab_def.h"). And the
series[1] went on to mark it obsolete to avoid confusion for users.
Here we can just remove all its users, which has no functional change.
[1] https://lore.kernel.org/all/20240223-slab-cleanup-flags-v2-1-02f1753e8303@suse.cz/
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Some more mostly boring fixes, but some not
User reported ones:
- the BTREE_ITER_FILTER_SNAPSHOTS one fixes a really nasty performance
bug; user reported an unter initially taking 2 seconds and then ~2
minutes
- kill a __GFP_NOFAIL in the buffered read path; this was a leftover
from the trickier fix to kill __GFP_NOFAIL in readahead, where we
can't return errors (and have to silently truncate the read
ourselves).
bcachefs can't use GFP_NOFAIL for folio state unlike iomap based
filesystems because our folio state is just barely too big, 2MB
hugepages cause us to exceed the 2 page threshhold for GFP_NOFAIL.
additionally, the flags argument was just buggy, we weren't supplying
GFP_KERNEL previously (!).
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Merge tag 'bcachefs-2024-02-25' of https://evilpiepirate.org/git/bcachefs
Pull bcachefs fixes from Kent Overstreet:
"Some more mostly boring fixes, but some not
User reported ones:
- the BTREE_ITER_FILTER_SNAPSHOTS one fixes a really nasty
performance bug; user reported an untar initially taking two
seconds and then ~2 minutes
- kill a __GFP_NOFAIL in the buffered read path; this was a leftover
from the trickier fix to kill __GFP_NOFAIL in readahead, where we
can't return errors (and have to silently truncate the read
ourselves).
bcachefs can't use GFP_NOFAIL for folio state unlike iomap based
filesystems because our folio state is just barely too big, 2MB
hugepages cause us to exceed the 2 page threshhold for GFP_NOFAIL.
additionally, the flags argument was just buggy, we weren't
supplying GFP_KERNEL previously (!)"
* tag 'bcachefs-2024-02-25' of https://evilpiepirate.org/git/bcachefs:
bcachefs: fix bch2_save_backtrace()
bcachefs: Fix check_snapshot() memcpy
bcachefs: Fix bch2_journal_flush_device_pins()
bcachefs: fix iov_iter count underflow on sub-block dio read
bcachefs: Fix BTREE_ITER_FILTER_SNAPSHOTS on inodes btree
bcachefs: Kill __GFP_NOFAIL in buffered read path
bcachefs: fix backpointer_to_text() when dev does not exist
- The XFS online fsck documentation uses incredibly deeply nested
subsection and list nesting; that broke the PDF docs build. Tweak a
parameter to tell LaTeX to allow the deeper nesting.
- Fix a 6.8 PDF-build regression
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Merge tag 'docs-6.8-fixes3' of git://git.lwn.net/linux
Pull two documentation build fixes from Jonathan Corbet:
- The XFS online fsck documentation uses incredibly deeply nested
subsection and list nesting; that broke the PDF docs build. Tweak a
parameter to tell LaTeX to allow the deeper nesting.
- Fix a 6.8 PDF-build regression
* tag 'docs-6.8-fixes3' of git://git.lwn.net/linux:
docs: translations: use attribute to store current language
docs: Instruct LaTeX to cope with deeper nesting
Here are some small USB fixes for 6.8-rc6 to resolve some reported
problems. These include:
- regression fixes with typec tpcm code as reported by many
- cdnsp and cdns3 driver fixes
- usb role setting code bugfixes
- build fix for uhci driver
- ncm gadget driver bugfix
- MAINTAINERS entry update
All of these have been in linux-next all week with no reported issues
and there is at least one fix in here that is in Thorsten's regression
list that is being tracked.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.8-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 for 6.8-rc6 to resolve some reported
problems. These include:
- regression fixes with typec tpcm code as reported by many
- cdnsp and cdns3 driver fixes
- usb role setting code bugfixes
- build fix for uhci driver
- ncm gadget driver bugfix
- MAINTAINERS entry update
All of these have been in linux-next all week with no reported issues
and there is at least one fix in here that is in Thorsten's regression
list that is being tracked"
* tag 'usb-6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: typec: tpcm: Fix issues with power being removed during reset
MAINTAINERS: Drop myself as maintainer of TYPEC port controller drivers
usb: gadget: ncm: Avoid dropping datagrams of properly parsed NTBs
Revert "usb: typec: tcpm: reset counter when enter into unattached state after try role"
usb: gadget: omap_udc: fix USB gadget regression on Palm TE
usb: dwc3: gadget: Don't disconnect if not started
usb: cdns3: fix memory double free when handle zero packet
usb: cdns3: fixed memory use after free at cdns3_gadget_ep_disable()
usb: roles: don't get/set_role() when usb_role_switch is unregistered
usb: roles: fix NULL pointer issue when put module's reference
usb: cdnsp: fixed issue with incorrect detecting CDNSP family controllers
usb: cdnsp: blocked some cdns3 specific code
usb: uhci-grlib: Explicitly include linux/platform_device.h
Here are 3 small serial/tty driver fixes for 6.8-rc6 that resolve the
following reported errors:
- riscv hvc console driver fix that was reported by many
- amba-pl011 serial driver fix for RS485 mode
- stm32 serial driver fix for RS485 mode
All of these have been in linux-next all week with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver fixes from Greg KH:
"Here are three small serial/tty driver fixes for 6.8-rc6 that resolve
the following reported errors:
- riscv hvc console driver fix that was reported by many
- amba-pl011 serial driver fix for RS485 mode
- stm32 serial driver fix for RS485 mode
All of these have been in linux-next all week with no reported
problems"
* tag 'tty-6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: amba-pl011: Fix DMA transmission in RS485 mode
serial: stm32: do not always set SER_RS485_RX_DURING_TX if RS485 is enabled
tty: hvc: Don't enable the RISC-V SBI console by default
point in the return-to-userspace path, otherwise memory accesses after
the VERW execution could cause data to land in CPU buffers again
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Merge tag 'x86_urgent_for_v6.8_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Make sure clearing CPU buffers using VERW happens at the latest
possible point in the return-to-userspace path, otherwise memory
accesses after the VERW execution could cause data to land in CPU
buffers again
* tag 'x86_urgent_for_v6.8_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
KVM/VMX: Move VERW closer to VMentry for MDS mitigation
KVM/VMX: Use BT+JNC, i.e. EFLAGS.CF to select VMRESUME vs. VMLAUNCH
x86/bugs: Use ALTERNATIVE() instead of mds_user_clear static key
x86/entry_32: Add VERW just before userspace transition
x86/entry_64: Add VERW just before userspace transition
x86/bugs: Add asm helpers for executing VERW
from silently failing to set it up
- Do not call bus_get_dev_root() for the mbigen irqchip as it always
returns NULL - use NULL directly
- Fix hardware interrupt number truncation when assigning MSI interrupts
- Correct sending end-of-interrupt messages to disabled interrupts lines on
RISC-V PLIC
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Merge tag 'irq_urgent_for_v6.8_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Borislav Petkov:
- Make sure GICv4 always gets initialized to prevent a kexec-ed kernel
from silently failing to set it up
- Do not call bus_get_dev_root() for the mbigen irqchip as it always
returns NULL - use NULL directly
- Fix hardware interrupt number truncation when assigning MSI
interrupts
- Correct sending end-of-interrupt messages to disabled interrupts
lines on RISC-V PLIC
* tag 'irq_urgent_for_v6.8_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gic-v3-its: Do not assume vPE tables are preallocated
irqchip/mbigen: Don't use bus_get_dev_root() to find the parent
PCI/MSI: Prevent MSI hardware interrupt number truncation
irqchip/sifive-plic: Enable interrupt if needed before EOI
- Fix page refcount leak when looking up specific inodes
introduced by metabuf reworking.
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Merge tag 'erofs-for-6.8-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs fix from Gao Xiang:
- Fix page refcount leak when looking up specific inodes
introduced by metabuf reworking
* tag 'erofs-for-6.8-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
erofs: fix refcount on the metabuf used for inode lookup
pathwalk. This series is a result of code audit (the second round
of it) and it should deal with most of that stuff. Exceptions: ntfs3
->d_hash()/->d_compare() and ceph_d_revalidate(). Up to maintainers (a
note for NTFS folks - when documentation says that a method may not block,
it *does* imply that blocking allocations are to be avoided. Really).
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Merge tag 'pull-fixes.pathwalk-rcu-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull RCU pathwalk fixes from Al Viro:
"We still have some races in filesystem methods when exposed to RCU
pathwalk. This series is a result of code audit (the second round of
it) and it should deal with most of that stuff.
Still pending: ntfs3 ->d_hash()/->d_compare() and ceph_d_revalidate().
Up to maintainers (a note for NTFS folks - when documentation says
that a method may not block, it *does* imply that blocking allocations
are to be avoided. Really)"
[ More explanations for people who aren't familiar with the vagaries of
RCU path walking: most of it is hidden from filesystems, but if a
filesystem actively participates in the low-level path walking it
needs to make sure the fields involved in that walk are RCU-safe.
That "actively participate in low-level path walking" includes things
like having its own ->d_hash()/->d_compare() routines, or by having
its own directory permission function that doesn't just use the common
helpers. Having a ->d_revalidate() function will also have this issue.
Note that instead of making everything RCU safe you can also choose to
abort the RCU pathwalk if your operation cannot be done safely under
RCU, but that obviously comes with a performance penalty. One common
pattern is to allow the simple cases under RCU, and abort only if you
need to do something more complicated.
So not everything needs to be RCU-safe, and things like the inode etc
that the VFS itself maintains obviously already are. But these fixes
tend to be about properly RCU-delaying things like ->s_fs_info that
are maintained by the filesystem and that got potentially released too
early. - Linus ]
* tag 'pull-fixes.pathwalk-rcu-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
ext4_get_link(): fix breakage in RCU mode
cifs_get_link(): bail out in unsafe case
fuse: fix UAF in rcu pathwalks
procfs: make freeing proc_fs_info rcu-delayed
procfs: move dropping pde and pid from ->evict_inode() to ->free_inode()
nfs: fix UAF on pathwalk running into umount
nfs: make nfs_set_verifier() safe for use in RCU pathwalk
afs: fix __afs_break_callback() / afs_drop_open_mmap() race
hfsplus: switch to rcu-delayed unloading of nls and freeing ->s_fs_info
exfat: move freeing sbi, upcase table and dropping nls into rcu-delayed helper
affs: free affs_sb_info with kfree_rcu()
rcu pathwalk: prevent bogus hard errors from may_lookup()
fs/super.c: don't drop ->s_user_ns until we free struct super_block itself
and a fix for erofs failure exit breakage (had been there since
way back).
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Merge tag 'pull-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro:
"A couple of fixes - revert of regression from this cycle and a fix for
erofs failure exit breakage (had been there since way back)"
* tag 'pull-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
erofs: fix handling kern_mount() failure
Revert "get rid of DCACHE_GENOCIDE"
1) errors from ext4_getblk() should not be propagated to caller
unless we are really sure that we would've gotten the same error
in non-RCU pathwalk.
2) we leak buffer_heads if ext4_getblk() is successful, but bh is
not uptodate.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
->d_revalidate() bails out there, anyway. It's not enough
to prevent getting into ->get_link() in RCU mode, but that
could happen only in a very contrieved setup. Not worth
trying to do anything fancy here unless ->d_revalidate()
stops kicking out of RCU mode at least in some cases.
Reviewed-by: Christian Brauner <brauner@kernel.org>
Acked-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
->permission(), ->get_link() and ->inode_get_acl() might dereference
->s_fs_info (and, in case of ->permission(), ->s_fs_info->fc->user_ns
as well) when called from rcu pathwalk.
Freeing ->s_fs_info->fc is rcu-delayed; we need to make freeing ->s_fs_info
and dropping ->user_ns rcu-delayed too.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
makes proc_pid_ns() safe from rcu pathwalk (put_pid_ns()
is still synchronous, but that's not a problem - it does
rcu-delay everything that needs to be)
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
that keeps both around until struct inode is freed, making access
to them safe from rcu-pathwalk
Acked-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
NFS ->d_revalidate(), ->permission() and ->get_link() need to access
some parts of nfs_server when called in RCU mode:
server->flags
server->caps
*(server->io_stats)
and, worst of all, call
server->nfs_client->rpc_ops->have_delegation
(the last one - as NFS_PROTO(inode)->have_delegation()). We really
don't want to RCU-delay the entire nfs_free_server() (it would have
to be done with schedule_work() from RCU callback, since it can't
be made to run from interrupt context), but actual freeing of
nfs_server and ->io_stats can be done via call_rcu() just fine.
nfs_client part is handled simply by making nfs_free_client() use
kfree_rcu().
Acked-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
nfs_set_verifier() relies upon dentry being pinned; if that's
the case, grabbing ->d_lock stabilizes ->d_parent and guarantees
that ->d_parent points to a positive dentry. For something
we'd run into in RCU mode that is *not* true - dentry might've
been through dentry_kill() just as we grabbed ->d_lock, with
its parent going through the same just as we get to into
nfs_set_verifier_locked(). It might get to detaching inode
(and zeroing ->d_inode) before nfs_set_verifier_locked() gets
to fetching that; we get an oops as the result.
That can happen in nfs{,4} ->d_revalidate(); the call chain in
question is nfs_set_verifier_locked() <- nfs_set_verifier() <-
nfs_lookup_revalidate_delegated() <- nfs{,4}_do_lookup_revalidate().
We have checked that the parent had been positive, but that's
done before we get to nfs_set_verifier() and it's possible for
memory pressure to pick our dentry as eviction candidate by that
time. If that happens, back-to-back attempts to kill dentry and
its parent are quite normal. Sure, in case of eviction we'll
fail the ->d_seq check in the caller, but we need to survive
until we return there...
Acked-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
In __afs_break_callback() we might check ->cb_nr_mmap and if it's non-zero
do queue_work(&vnode->cb_work). In afs_drop_open_mmap() we decrement
->cb_nr_mmap and do flush_work(&vnode->cb_work) if it reaches zero.
The trouble is, there's nothing to prevent __afs_break_callback() from
seeing ->cb_nr_mmap before the decrement and do queue_work() after both
the decrement and flush_work(). If that happens, we might be in trouble -
vnode might get freed before the queued work runs.
__afs_break_callback() is always done under ->cb_lock, so let's make
sure that ->cb_nr_mmap can change from non-zero to zero while holding
->cb_lock (the spinlock component of it - it's a seqlock and we don't
need to mess with the counter).
Acked-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
->d_hash() and ->d_compare() use those, so we need to delay freeing
them.
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
That stuff can be accessed by ->d_hash()/->d_compare(); as it is, we have
a hard-to-hit UAF if rcu pathwalk manages to get into ->d_hash() on a filesystem
that is in process of getting shut down.
Besides, having nls and upcase table cleanup moved from ->put_super() towards
the place where sbi is freed makes for simpler failure exits.
Acked-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
one of the flags in it is used by ->d_hash()/->d_compare()
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
If lazy call of ->permission() returns a hard error, check that
try_to_unlazy() succeeds before returning it. That both makes
life easier for ->permission() instances and closes the race
in ENOTDIR handling - it is possible that positive d_can_lookup()
seen in link_path_walk() applies to the state *after* unlink() +
mkdir(), while nd->inode matches the state prior to that.
Normally seeing e.g. EACCES from permission check in rcu pathwalk
means that with some timings non-rcu pathwalk would've run into
the same; however, running into a non-executable regular file
in the middle of a pathname would not get to permission check -
it would fail with ENOTDIR instead.
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Avoids fun races in RCU pathwalk... Same goes for freeing LSM shite
hanging off super_block's arse.
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
check_snapshot() copies the bch_snapshot to a temporary to easily handle
older versions that don't have all the fields of the current version,
but it lacked a min() to correctly handle keys newer and larger than the
current version.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
If a journal write errored, the list of devices it was written to could
be empty - we're not supposed to mark an empty replicas list.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
bch2_direct_IO_read() checks the request offset and size for sector
alignment and then falls through to a couple calculations to shrink
the size of the request based on the inode size. The problem is that
these checks round up to the fs block size, which runs the risk of
underflowing iter->count if the block size happens to be large
enough. This is triggered by fstest generic/361 with a 4k block
size, which subsequently leads to a crash. To avoid this crash,
check that the shorten length doesn't exceed the overall length of
the iter.
Fixes:
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Su Yue <glass.su@suse.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
If we're in FILTER_SNAPSHOTS mode and we start scanning a range of the
keyspace where no keys are visible in the current snapshot, we have a
problem - we'll scan for a very long time before scanning terminates.
Awhile back, this was fixed for most cases with peek_upto() (and
assertions that enforce that it's being used).
But the fix missed the fact that the inodes btree is different - every
key offset is in a different snapshot tree, not just the inode field.
Fixes:
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Recently, we fixed our __GFP_NOFAIL usage in the readahead path, but the
easy one in read_single_folio() (where wa can return an error) was
missed - oops.
Fixes:
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
- Fix a crash when hot adding a PCI device to an LPAR since recent changes.
- Fix nested KVM level-2 guest reboot failure due to empty 'arch_compat'.
Thanks to: Amit Machhiwal, Aneesh Kumar K.V (IBM), Brian King, Gaurav Batra,
Vaibhav Jain.
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Merge tag 'powerpc-6.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Fix a crash when hot adding a PCI device to an LPAR since
recent changes
- Fix nested KVM level-2 guest reboot failure due to empty
'arch_compat'
Thanks to Amit Machhiwal, Aneesh Kumar K.V (IBM), Brian King, Gaurav
Batra, and Vaibhav Jain.
* tag 'powerpc-6.8-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
KVM: PPC: Book3S HV: Fix L2 guest reboot failure due to empty 'arch_compat'
powerpc/pseries/iommu: DLPAR add doesn't completely initialize pci_controller
Including:
- Intel VT-d fixes for nested domain handling:
- Cache invalidation for changes in a parent domain
- Dirty tracking setting for parent and nested domains
- Fix a constant-out-of-range warning
- ARM SMMU fixes:
- Fix CD allocation from atomic context when using SVA with SMMUv3
- Revert the conversion of SMMUv2 to domain_alloc_paging(), as it
breaks the boot for Qualcomm MSM8996 devices
- Restore SVA handle sharing in core code as it turned out there are
still drivers relying on it
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Merge tag 'iommu-fixes-v6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu fixes from Joerg Roedel:
- Intel VT-d fixes for nested domain handling:
- Cache invalidation for changes in a parent domain
- Dirty tracking setting for parent and nested domains
- Fix a constant-out-of-range warning
- ARM SMMU fixes:
- Fix CD allocation from atomic context when using SVA with SMMUv3
- Revert the conversion of SMMUv2 to domain_alloc_paging(), as it
breaks the boot for Qualcomm MSM8996 devices
- Restore SVA handle sharing in core code as it turned out there are
still drivers relying on it
* tag 'iommu-fixes-v6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/sva: Restore SVA handle sharing
iommu/arm-smmu-v3: Do not use GFP_KERNEL under as spinlock
iommu/vt-d: Fix constant-out-of-range warning
iommu/vt-d: Set SSADE when attaching to a parent with dirty tracking
iommu/vt-d: Add missing dirty tracking set for parent domain
iommu/vt-d: Wrap the dirty tracking loop to be a helper
iommu/vt-d: Remove domain parameter for intel_pasid_setup_dirty_tracking()
iommu/vt-d: Add missing device iotlb flush for parent domain
iommu/vt-d: Update iotlb in nested domain attach
iommu/vt-d: Add missing iotlb flush for parent domain
iommu/vt-d: Add __iommu_flush_iotlb_psi()
iommu/vt-d: Track nested domains in parent
Revert "iommu/arm-smmu: Convert to domain_alloc_paging()"
- Fix NUMA initialization from ACPI CEDT.CFMWS
- Fix region assembly failures due to async init order
- Fix / simplify export of qos_class information
- Fix cxl_acpi initialization vs single-window-init failures
- Fix handling of repeated 'pci_channel_io_frozen' notifications
- Workaround platforms that violate host-physical-address ==
system-physical address assumptions
- Defer CXL CPER notification handling to v6.9
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Merge tag 'cxl-fixes-6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull cxl fixes from Dan Williams:
"A collection of significant fixes for the CXL subsystem.
The largest change in this set, that bordered on "new development", is
the fix for the fact that the location of the new qos_class attribute
did not match the Documentation. The fix ends up deleting more code
than it added, and it has a new unit test to backstop basic errors in
this interface going forward. So the "red-diff" and unit test saved
the "rip it out and try again" response.
In contrast, the new notification path for firmware reported CXL
errors (CXL CPER notifications) has a locking context bug that can not
be fixed with a red-diff. Given where the release cycle stands, it is
not comfortable to squeeze in that fix in these waning days. So, that
receives the "back it out and try again later" treatment.
There is a regression fix in the code that establishes memory NUMA
nodes for platform CXL regions. That has an ack from x86 folks. There
are a couple more fixups for Linux to understand (reassemble) CXL
regions instantiated by platform firmware. The policy around platforms
that do not match host-physical-address with system-physical-address
(i.e. systems that have an address translation mechanism between the
address range reported in the ACPI CEDT.CFMWS and endpoint decoders)
has been softened to abort driver load rather than teardown the memory
range (can cause system hangs). Lastly, there is a robustness /
regression fix for cases where the driver would previously continue in
the face of error, and a fixup for PCI error notification handling.
Summary:
- Fix NUMA initialization from ACPI CEDT.CFMWS
- Fix region assembly failures due to async init order
- Fix / simplify export of qos_class information
- Fix cxl_acpi initialization vs single-window-init failures
- Fix handling of repeated 'pci_channel_io_frozen' notifications
- Workaround platforms that violate host-physical-address ==
system-physical address assumptions
- Defer CXL CPER notification handling to v6.9"
* tag 'cxl-fixes-6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
cxl/acpi: Fix load failures due to single window creation failure
acpi/ghes: Remove CXL CPER notifications
cxl/pci: Fix disabling memory if DVSEC CXL Range does not match a CFMWS window
cxl/test: Add support for qos_class checking
cxl: Fix sysfs export of qos_class for memdev
cxl: Remove unnecessary type cast in cxl_qos_class_verify()
cxl: Change 'struct cxl_memdev_state' *_perf_list to single 'struct cxl_dpa_perf'
cxl/region: Allow out of order assembly of autodiscovered regions
cxl/region: Handle endpoint decoders in cxl_region_find_decoder()
x86/numa: Fix the sort compare func used in numa_fill_memblks()
x86/numa: Fix the address overlap check in numa_fill_memblks()
cxl/pci: Skip to handle RAS errors if CXL.mem device is detached
they recheck in the error path.
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Merge tag 'for-6.8/dm-fix-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fix from Mike Snitzer:
- Fix DM integrity and verity targets to not use excessive stack when
they recheck in the error path.
* tag 'for-6.8/dm-fix-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm-integrity, dm-verity: reduce stack usage for recheck
Six fixes: the four driver ones are pretty trivial. The larger two
core changes are to try to fix various USB attached devices which have
somewhat eccentric ways of handling the VPD and other mode pages which
necessitate multiple revalidates (that were removed in the interests
of efficiency) and updating the heuristic for supported VPD pages.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Six fixes: the four driver ones are pretty trivial.
The larger two core changes are to try to fix various USB attached
devices which have somewhat eccentric ways of handling the VPD and
other mode pages which necessitate multiple revalidates (that were
removed in the interests of efficiency) and updating the heuristic for
supported VPD pages"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: jazz_esp: Only build if SCSI core is builtin
scsi: smartpqi: Fix disable_managed_interrupts
scsi: ufs: Uninitialized variable in ufshcd_devfreq_target()
scsi: target: pscsi: Fix bio_put() for error case
scsi: core: Consult supported VPD page list prior to fetching page
scsi: sd: usb_storage: uas: Access media prior to querying device properties
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Merge tag 'i2c-for-6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fix from Wolfram Sang:
"A bugfix for host drivers"
* tag 'i2c-for-6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: imx: when being a target, mark the last read as processed
The newly added integrity_recheck() function has another larger stack
allocation, just like its caller integrity_metadata(). When it gets
inlined, the combination of the two exceeds the warning limit for 32-bit
architectures and possibly risks an overflow when this is called from
a deep call chain through a file system:
drivers/md/dm-integrity.c:1767:13: error: stack frame size (1048) exceeds limit (1024) in 'integrity_metadata' [-Werror,-Wframe-larger-than]
1767 | static void integrity_metadata(struct work_struct *w)
Since the caller at this point is done using its checksum buffer,
just reuse the same buffer in the new function to avoid the double
allocation.
[Mikulas: add "noinline" to integrity_recheck and verity_recheck.
These functions are only called on error, so they shouldn't bloat the
stack frame or code size of the caller.]
Fixes: c88f5e553f ("dm-integrity: recheck the integrity tag after a failure")
Fixes: 9177f3c0de ("dm-verity: recheck the hash after a failure")
Cc: stable@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
When being a target, NAK from the controller means that all bytes have
been transferred. So, the last byte needs also to be marked as
'processed'. Otherwise index registers of backends may not increase.
Fixes: f7414cd692 ("i2c: imx: support slave mode for imx I2C driver")
Signed-off-by: Corey Minyard <minyard@acm.org>
Tested-by: Andrew Manley <andrew.manley@sealingtech.com>
Reviewed-by: Andrew Manley <andrew.manley@sealingtech.com>
Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de>
[wsa: fixed comment and commit message to properly describe the case]
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
- Fix CPU hotplug
- Fix unaligned accesses and faults in stack unwinder
- Fix potential build errors by always including asm-generic/kprobes.h
- Fix build bug by add missing CONFIG_DYNAMIC_FTRACE check
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Merge tag 'parisc-for-6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc architecture fixes from Helge Deller:
"Fixes CPU hotplug, the parisc stack unwinder and two possible build
errors in kprobes and ftrace area:
- Fix CPU hotplug
- Fix unaligned accesses and faults in stack unwinder
- Fix potential build errors by always including asm-generic/kprobes.h
- Fix build bug by add missing CONFIG_DYNAMIC_FTRACE check"
* tag 'parisc-for-6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Fix stack unwinder
parisc/kprobes: always include asm-generic/kprobes.h
parisc/ftrace: add missing CONFIG_DYNAMIC_FTRACE check
Revert "parisc: Only list existing CPUs in cpu_possible_mask"
The Rockchip and IMX8 platforms get a number of fixes for dts files in
order to address some misconfigurations, including a regression for
USB-C support on some boards.
The other dts fixes are part of a series by Rob Herring to clean up
another class of dtc compiler warnings across all platforms, with
a few others helping out as well. With this, we can enable the warning
for the coming merge window without introducing regressions.
Conor Dooley has collected fixes for RISC-V platforms, both for the
dts files and for platofrm specific drivers.
The ep93xx platform gets a regression for for its gpio descriptors.
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Merge tag 'arm-fixes-6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull arm and RISC-V SoC fixes from Arnd Bergmann:
"The Rockchip and IMX8 platforms get a number of fixes for dts files in
order to address some misconfigurations, including a regression for
USB-C support on some boards.
The other dts fixes are part of a series by Rob Herring to clean up
another class of dtc compiler warnings across all platforms, with a
few others helping out as well. With this, we can enable the warning
for the coming merge window without introducing regressions.
Conor Dooley has collected fixes for RISC-V platforms, both for the
dts files and for platofrm specific drivers.
The ep93xx platform gets a regression for for its gpio descriptors"
* tag 'arm-fixes-6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (28 commits)
ARM: dts: renesas: rcar-gen2: Add missing #interrupt-cells to DA9063 nodes
cache: ax45mp_cache: Align end size to cache boundary in ax45mp_dma_cache_wback()
arm64: dts: qcom: Fix interrupt-map cell sizes
arm: dts: Fix dtc interrupt_map warnings
arm64: dts: Fix dtc interrupt_provider warnings
arm: dts: Fix dtc interrupt_provider warnings
arm64: dts: freescale: Disable interrupt_map check
ARM: ep93xx: Add terminator to gpiod_lookup_table
riscv: dts: sifive: add missing #interrupt-cells to pmic
arm64: dts: rockchip: Correct Indiedroid Nova GPIO Names
arm64: dts: rockchip: Drop interrupts property from rk3328 pwm-rockchip node
arm64: dts: rockchip: set num-cs property for spi on px30
arm64: dts: rockchip: minor rk3588 whitespace cleanup
riscv: dts: starfive: replace underscores in node names
bus: imx-weim: fix valid range check
Revert "arm64: dts: imx8mn-var-som-symphony: Describe the USB-C connector"
Revert "arm64: dts: imx8mp-dhcom-pdk3: Describe the USB-C connector"
arm64: dts: tqma8mpql: fix audio codec iov-supply
arm64: dts: rockchip: drop unneeded status from rk3588-jaguar gpio-leds
ARM: dts: rockchip: Drop interrupts property from pwm-rockchip nodes
...
- Revert fix to jump label asm constraints, as it regresses the build
with some GCC 5.5 toolchains.
- Restore SME control registers when resuming from suspend
- Fix incorrect filter definition in CXL PMU 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 Will Deacon:
"A simple fix to a definition in the CXL PMU driver, a couple of
patches to restore SME control registers on the resume path (since
Arm's fast model now clears them) and a revert for our jump label asm
constraints after Geert noticed they broke the build with GCC 5.5.
There was then the ensuing discussion about raising the minimum GCC
(and corresponding binutils) versions at [1], but for now we'll keep
things working as they were until that goes ahead.
- Revert fix to jump label asm constraints, as it regresses the build
with some GCC 5.5 toolchains.
- Restore SME control registers when resuming from suspend
- Fix incorrect filter definition in CXL PMU driver"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64/sme: Restore SMCR_EL1.EZT0 on exit from suspend
arm64/sme: Restore SME registers on exit from suspend
Revert "arm64: jump_label: use constraints "Si" instead of "i""
perf: CXL: fix CPMU filter value mask length
- Fix invalid -EBUSY on ccw_device_start() which can lead to failing
device initialization
- Add missing multiplication by 8 in __iowrite64_copy() to get the
correct byte length before calling zpci_memcpy_toio()
- Various config updates
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Merge tag 's390-6.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Heiko Carstens:
- Fix invalid -EBUSY on ccw_device_start() which can lead to failing
device initialization
- Add missing multiplication by 8 in __iowrite64_copy() to get the
correct byte length before calling zpci_memcpy_toio()
- Various config updates
* tag 's390-6.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/cio: fix invalid -EBUSY on ccw_device_start
s390: use the correct count for __iowrite64_copy()
s390/configs: update default configurations
s390/configs: enable INIT_STACK_ALL_ZERO in all configurations
s390/configs: provide compat topic configuration target
or aren't considered appropriate for backporting.
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Merge tag 'mm-hotfixes-stable-2024-02-22-15-02' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"A batch of MM (and one non-MM) hotfixes.
Ten are cc:stable and the remainder address post-6.7 issues or aren't
considered appropriate for backporting"
* tag 'mm-hotfixes-stable-2024-02-22-15-02' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
kasan: guard release_free_meta() shadow access with kasan_arch_is_ready()
mm/damon/lru_sort: fix quota status loss due to online tunings
mm/damon/reclaim: fix quota stauts loss due to online tunings
MAINTAINERS: mailmap: update Shakeel's email address
mm/damon/sysfs-schemes: handle schemes sysfs dir removal before commit_schemes_quota_goals
mm: memcontrol: clarify swapaccount=0 deprecation warning
mm/memblock: add MEMBLOCK_RSRV_NOINIT into flagname[] array
mm/zswap: invalidate duplicate entry when !zswap_enabled
lib/Kconfig.debug: TEST_IOV_ITER depends on MMU
mm/swap: fix race when skipping swapcache
mm/swap_state: update zswap LRU's protection range with the folio locked
selftests/mm: uffd-unit-test check if huge page size is 0
mm/damon/core: check apply interval in damon_do_apply_schemes()
mm: zswap: fix missing folio cleanup in writeback race path
address systemic failure that can occur if user provided pages map
to the same block.
- Fix DM crypt to not allow modifying data that being encrypted for
authenticated encryption.
- Fix DM crypt and verity targets to align their respective bvec_iter
struct members to avoid the need for byte level access (due to
__packed attribute) that is costly on some arches (like RISC).
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Merge tag 'for-6.8/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- Stable fixes for 3 DM targets (integrity, verity and crypt) to
address systemic failure that can occur if user provided pages map to
the same block.
- Fix DM crypt to not allow modifying data that being encrypted for
authenticated encryption.
- Fix DM crypt and verity targets to align their respective bvec_iter
struct members to avoid the need for byte level access (due to
__packed attribute) that is costly on some arches (like RISC).
* tag 'for-6.8/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm-crypt, dm-integrity, dm-verity: bump target version
dm-verity, dm-crypt: align "struct bvec_iter" correctly
dm-crypt: recheck the integrity tag after a failure
dm-crypt: don't modify the data when using authenticated encryption
dm-verity: recheck the hash after a failure
dm-integrity: recheck the integrity tag after a failure
fbdev:
- fix sparc undefined reference
syncobj:
- fix sync obj fence waiting
- handle NULL fence in syncobj eventfd code
ttm:
- fix invalid free
buddy:
- fix list handling
- fix 32-bit build
meson:
- don't remove bridges from other drivers
nouveau:
- fix build warnings
- add two minor info parameters
- add a Kconfig to allow GSP by default on some GPUs
ivpu:
- allow fw to do initial tile config
i915:
- fix TV mode
amdgpu:
- Suspend/resume fixes
- Backlight error fix
- DCN 3.5 fixes
- Misc fixes
xe:
- Remove support for persistent exec_queues
- Drop a reduntant sysfs newline printout
- A three-patch fix for a VM_BIND rebind optimization path
- Fix a modpost warning on an xe KUNIT module
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Merge tag 'drm-fixes-2024-02-23' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"This is the weekly drm fixes. Non-drivers there is a fbdev/sparc fix,
syncobj, ttm and buddy fixes.
On the driver side, ivpu, meson, i915 have a small fix each. Then
amdgpu and xe have a bunch. Nouveau has some minor uapi additions to
give userspace some useful info along with a Kconfig change to allow
the new GSP firmware paths to be used by default on the GPUs it
supports.
Seems about the usual amount for this time of release cycle.
fbdev:
- fix sparc undefined reference
syncobj:
- fix sync obj fence waiting
- handle NULL fence in syncobj eventfd code
ttm:
- fix invalid free
buddy:
- fix list handling
- fix 32-bit build
meson:
- don't remove bridges from other drivers
nouveau:
- fix build warnings
- add two minor info parameters
- add a Kconfig to allow GSP by default on some GPUs
ivpu:
- allow fw to do initial tile config
i915:
- fix TV mode
amdgpu:
- Suspend/resume fixes
- Backlight error fix
- DCN 3.5 fixes
- Misc fixes
xe:
- Remove support for persistent exec_queues
- Drop a reduntant sysfs newline printout
- A three-patch fix for a VM_BIND rebind optimization path
- Fix a modpost warning on an xe KUNIT module"
* tag 'drm-fixes-2024-02-23' of git://anongit.freedesktop.org/drm/drm: (27 commits)
nouveau: add an ioctl to report vram usage
nouveau: add an ioctl to return vram bar size.
nouveau/gsp: add kconfig option to enable GSP paths by default
drm/amdgpu: Fix the runtime resume failure issue
drm/amd/display: fix null-pointer dereference on edid reading
drm/amd/display: Fix memory leak in dm_sw_fini()
drm/amd/display: fix input states translation error for dcn35 & dcn351
drm/amd/display: Fix potential null pointer dereference in dc_dmub_srv
drm/amd/display: Only allow dig mapping to pwrseq in new asic
drm/amd/display: adjust few initialization order in dm
drm/syncobj: handle NULL fence in syncobj_eventfd_entry_func
drm/syncobj: call drm_syncobj_fence_add_wait when WAIT_AVAILABLE flag is set
drm/ttm: Fix an invalid freeing on already freed page in error path
sparc: Fix undefined reference to fb_is_primary_device
drm/xe: Fix modpost warning on xe_mocs kunit module
drm/xe/xe_gt_idle: Drop redundant newline in name
drm/xe: Return 2MB page size for compact 64k PTEs
drm/xe: Add XE_VMA_PTE_64K VMA flag
drm/xe: Fix xe_vma_set_pte_size
drm/xe/uapi: Remove support for persistent exec_queues
...
- Do not try to set a sleeping device to standby. Sleep is a deeper
sleep state than standby, and needs a reset to wake up the drive.
A system resume will reset the port. Sending a command other than
reset to a sleeping device is not wise, as the command will timeout.
(Damien Le Moal)
- Do not try to put a device to standby twice during system shutdown.
ata_dev_power_set_standby() is currently called twice during
shutdown, once after the scsi device is removed, and another when
ata_pci_shutdown_one() executes. Modify ata_dev_power_set_standby()
to do nothing if the device is already in standby. (Damien Le Moal)
- Add a quirk for ASM1064 to fixup the number of implemented ports.
We probe all ports that the hardware reports to be implemented.
Probing ports that are not implemented causes significantly increased
boot time. (Andrey Jr. Melnikov)
- Fix error handling for the ahci_ceva driver.
Ensure that the ahci_ceva driver does a proper cleanup of its
resources in the error path. (Radhey Shyam Pandey)
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Merge tag 'ata-6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux
Pull ata fixes from Niklas Cassel:
- Do not try to set a sleeping device to standby. Sleep is a deeper
sleep state than standby, and needs a reset to wake up the drive. A
system resume will reset the port. Sending a command other than reset
to a sleeping device is not wise, as the command will timeout (Damien
Le Moal)
- Do not try to put a device to standby twice during system shutdown.
ata_dev_power_set_standby() is currently called twice during
shutdown, once after the scsi device is removed, and another when
ata_pci_shutdown_one() executes. Modify ata_dev_power_set_standby()
to do nothing if the device is already in standby (Damien Le Moal)
- Add a quirk for ASM1064 to fixup the number of implemented ports. We
probe all ports that the hardware reports to be implemented. Probing
ports that are not implemented causes significantly increased boot
time (Andrey Jr. Melnikov)
- Fix error handling for the ahci_ceva driver. Ensure that the
ahci_ceva driver does a proper cleanup of its resources in the error
path (Radhey Shyam Pandey)
* tag 'ata-6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
ata: libata-core: Do not call ata_dev_power_set_standby() twice
ata: ahci_ceva: fix error handling for Xilinx GT PHY support
ahci: asm1064: correct count of reported ports
ata: libata-core: Do not try to set sleeping devices to standby
- fix a use-case where no pins are mapped to GPIOs in
gpiochip_generic_config()
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Merge tag 'gpio-fixes-for-v6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fix from Bartosz Golaszewski:
- fix a use-case where no pins are mapped to GPIOs in
gpiochip_generic_config()
* tag 'gpio-fixes-for-v6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpiolib: Handle no pin_ranges in gpiochip_generic_config()
Chengming Zhou