Liam R. Howlett [Fri, 18 Jun 2021 19:06:12 +0000 (15:06 -0400)]
mm/mmap: Drop range_has_overlap() function
Since there is no longer a linked list, the range_has_overlap() function
is identical to the find_vma_intersection() function. There is only one
place that actually needs the previous vma, so just use vma_prev() in
that one case.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Liam R. Howlett [Tue, 1 Dec 2020 02:30:04 +0000 (21:30 -0500)]
mm/mmap: Change do_brk_munmap() to use do_mas_align_munmap()
do_brk_munmap() has already aligned the address and has a maple tree
state to be used. Use the new do_mas_align_munmap() to avoid
unnecessary alignment and error checks.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Liam R. Howlett [Thu, 19 Nov 2020 17:57:23 +0000 (12:57 -0500)]
mm/mmap: Reorganize munmap to use maple states
Remove __do_munmap() in favour of do_munmap(), do_mas_munmap(), and
do_mas_align_munmap().
do_munmap() is a wrapper to create a maple state for any callers that
have not been converted to the maple tree.
do_mas_munmap() takes a maple state to mumap a range. This is just a
small function which checks for error conditions and aligns the end of
the range.
do_mas_align_munmap() uses the aligned range to mumap a range.
do_mas_align_munmap() starts with the first VMA in the range, then finds
the last VMA in the range. Both start and end are split if necessary.
Then the VMAs are unlocked and removed from the linked list at the same
time. Followed by a single tree operation of overwriting the area in
with a NULL. Finally, the detached list is unmapped and freed.
By reorganizing the munmap calls as outlined, it is now possible to
avoid extra work of aligning pre-aligned callers which are known to be
safe, avoid extra VMA lookups or tree walks for modifications.
detach_vmas_to_be_unmapped() is no longer used, so drop this code.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Liam R. Howlett [Mon, 16 Nov 2020 19:50:20 +0000 (14:50 -0500)]
mm: Remove vmacache
By using the maple tree and the maple tree state, the vmacache is no
longer beneficial and is complicating the VMA code. Remove the vmacache
to reduce the work in keeping it up to date and code complexity.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Liam R. Howlett [Tue, 10 Nov 2020 18:37:40 +0000 (13:37 -0500)]
mm/mmap: Use advanced maple tree API for mmap_region()
Changing mmap_region() to use the maple tree state and the advanced
maple tree interface allows for a lot less tree walking.
This change removes the last caller of munmap_vma_range(), so drop this
unused function.
Add vma_expand() to expand a VMA if possible by doing the necessary
hugepage check, uprobe_munmap of files, dcache flush, modifications then
undoing the detaches, etc.
Add vma_mas_link() helper to add a VMA to the linked list and maple tree
until the linked list is removed.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
mm: Use maple tree operations for find_vma_intersection() and find_vma()
Move find_vma_intersection() to mmap.c and change implementation to
maple tree.
When searching for a vma within a range, it is easier to use the maple
tree interface. This means the find_vma() call changes to a special
case of the find_vma_intersection().
Exported for kvm module.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
mm/mmap: Change do_brk_flags() to expand existing VMA and add
do_brk_munmap()
Avoid allocating a new VMA when it a vma modification can occur. When a
brk() can expand or contract a VMA, then the single store operation will
only modify one index of the maple tree instead of causing a node to
split or coalesce. This avoids unnecessary allocations/frees of maple
tree nodes and VMAs.
Use the advanced API for the maple tree to avoid unnecessary walks of
the tree.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
mm/khugepaged: Optimize collapse_pte_mapped_thp() by using vma_lookup()
vma_lookup() will walk the vma tree once and not continue to look for
the next vma. Since the exact vma is checked below, this is a more
optimal way of searching.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Use vma_lookup() to walk the tree to the start value requested. If
the vma at the start does not match, then the answer is NULL and there
is no need to look at the next vma the way that find_vma() would.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
xen/privcmd: Optimized privcmd_ioctl_mmap() by using vma_lookup()
vma_lookup() walks the VMA tree for a specific value, find_vma() will
search the tree after walking to a specific value. It is more efficient
to only walk to the requested value as this case requires the address to
equal the vm_start.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
mmap: Change zeroing of maple tree in __vma_adjust
Only write to the maple tree if we are not inserting or the insert isn't
going to overwrite the area to clear. This avoids spanning writes and
node coealescing when unnecessary.
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
kernel/fork: Use maple tree for dup_mmap() during forking
The maple tree was already tracking VMAs in this function by an earlier
commit, but the rbtree iterator was being used to iterate the list.
Change the iterator to use a maple tree native iterator, rcu locking,
and switch to the maple tree advanced API to avoid multiple walks of the
tree during insert operations.
anon_vma_fork() may enter the slow path and cause a schedule() call to
cause rcu issues. Drop the rcu lock and reacquiring the lock. There is
no harm in this approach as the mmap_sem is taken for write/read and
held across the schedule() call so the VMAs will not change.
Note that the bulk allocation of nodes is also happening here for
performance reasons. The node calculations are done internally to the
tree and use the VMA count and assume the worst-case node requirements.
The VM_DONT_COPY flag does not allow for the most efficient copy method
of the tree and so a bulk loading algorithm is used.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
mm/mmap: Use maple tree for unmapped_area{_topdown}
The maple tree code was added to find the unmapped area in a previous
commit and was checked against what the rbtree returned, but the actual
result was never used. Start using the maple tree implementation and
remove the rbtree code. Note, the advanced maple tree interface is used
so the rcu locking is needed to be handled here or at a higher level.
Add kernel documentation comment for these functions.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
mm/mmap: Use the maple tree for find_vma_prev() instead of the rbtree
Use the maple tree's advanced API and a maple state to walk the tree for
the entry at the address or the next vma, then use the maple state to
walk back one entry to find the previous entry. Note, the advanced
maple tree interface does not handle the rcu locking.
Add kernel documentation comments for this API.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Start tracking the VMAs with the new maple tree structure in parallel
with the rb_tree. Add debug and trace events for maple tree operations
and duplicate the rb_tree that is created on forks into the maple tree.
In this commit, the maple tree is added to the mm_struct including the
mm_init struct, added support in required mm/mmap functions, added
tracking in kernel/fork for process forking, and used to find the
unmapped_area and checked against what the rbtree finds.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
The maple tree is an RCU-safe range based B-tree designed to use modern
processor cache efficiently. There are a number of places in the kernel
that a non-overlapping range-based tree would be beneficial, especially
one with a simple interface. The first user that is covered in this
patch set is the vm_area_struct, where three data structures are
replaced by the maple tree: the augmented rbtree, the vma cache, and the
linked list of VMAs in the mm_struct. The long term goal is to reduce
or remove the mmap_sem contention.
The tree has a branching factor of 10 for non-leaf nodes and 16 for leaf
nodes. With the increased branching factor, it is significantly shorter than
the rbtree so it has fewer cache misses. The removal of the linked list
between subsequent entries also reduces the cache misses and the need to pull
in the previous and next VMA during many tree alterations.
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Liam R. Howlett [Tue, 1 Jun 2021 14:35:43 +0000 (10:35 -0400)]
radix tree test suite: Add allocation counts and size to kmem_cache
Add functions to get the number of allocations, and total allocations
from a kmem_cache. Also add a function to get the allocated size and a
way to zero the total allocations.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Liam R. Howlett [Thu, 27 Feb 2020 20:13:20 +0000 (15:13 -0500)]
radix tree test suite: Add kmem_cache_set_non_kernel()
kmem_cache_set_non_kernel() is a mechanism to allow a certain number of
kmem_cache_alloc requests to succeed even when GFP_KERNEL is not set in
the flags. This functionality allows for testing different paths though
the code.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Merge tag '5.15-rc2-ksmbd-fixes' of git://git.samba.org/ksmbd
Pull ksmbd fixes from Steve French:
"Five fixes for the ksmbd kernel server, including three security
fixes:
- remove follow symlinks support
- use LOOKUP_BENEATH to prevent out of share access
- SMB3 compounding security fix
- fix for returning the default streams correctly, fixing a bug when
writing ppt or doc files from some clients
- logging more clearly that ksmbd is experimental (at module load
time)"
* tag '5.15-rc2-ksmbd-fixes' of git://git.samba.org/ksmbd:
ksmbd: use LOOKUP_BENEATH to prevent the out of share access
ksmbd: remove follow symlinks support
ksmbd: check protocol id in ksmbd_verify_smb_message()
ksmbd: add default data stream name in FILE_STREAM_INFORMATION
ksmbd: log that server is experimental at module load
Merge tag 'edac_urgent_for_v5.15_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC fixes from Borislav Petkov:
"Fix two EDAC drivers using the wrong value type for the DIMM mode"
* tag 'edac_urgent_for_v5.15_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/dmc520: Assign the proper type to dimm->edac_mode
EDAC/synopsys: Fix wrong value type assignment for edac_mode
Merge tag 'thermal-v5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux
Pull thermal fixes from Daniel Lezcano:
- Fix thermal shutdown after a suspend/resume due to a wrong TCC value
restored on Intel platform (Antoine Tenart)
- Fix potential buffer overflow when building the list of policies. The
buffer size is not updated after writing to it (Dan Carpenter)
- Fix wrong check against IS_ERR instead of NULL (Ansuel Smith)
* tag 'thermal-v5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux:
thermal/drivers/tsens: Fix wrong check for tzd in irq handlers
thermal/core: Potential buffer overflow in thermal_build_list_of_policies()
thermal/drivers/int340x: Do not set a wrong tcc offset on resume
Merge tag 'x86-urgent-2021-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A set of fixes for X86:
- Prevent sending the wrong signal when protection keys are enabled
and the kernel handles a fault in the vsyscall emulation.
- Invoke early_reserve_memory() before invoking e820_memory_setup()
which is required to make the Xen dom0 e820 hooks work correctly.
- Use the correct data type for the SETZ operand in the EMQCMDS
instruction wrapper.
- Prevent undefined behaviour to the potential unaligned accesss in
the instruction decoder library"
* tag 'x86-urgent-2021-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/insn, tools/x86: Fix undefined behavior due to potential unaligned accesses
x86/asm: Fix SETZ size enqcmds() build failure
x86/setup: Call early_reserve_memory() earlier
x86/fault: Fix wrong signal when vsyscall fails with pkey
Merge tag 'timers-urgent-2021-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Thomas Gleixner:
"A single fix for the recently introduced regression in posix CPU
timers which failed to stop the timer when requested. That caused
unexpected signals to be sent to the process/thread causing
malfunction"
* tag 'timers-urgent-2021-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
posix-cpu-timers: Prevent spuriously armed 0-value itimer
Merge tag 'irq-urgent-2021-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
"A set of fixes for interrupt chip drivers:
- Work around a bad GIC integration on a Renesas platform which can't
handle byte-sized MMIO access
- Plug a potential memory leak in the GICv4 driver
- Fix a regression in the Armada 370-XP IPI code which was caused by
issuing EOI instack of ACK.
- A couple of small fixes here and there"
* tag 'irq-urgent-2021-09-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gic: Work around broken Renesas integration
irqchip/renesas-rza1: Use semicolons instead of commas
irqchip/gic-v3-its: Fix potential VPE leak on error
irqchip/goldfish-pic: Select GENERIC_IRQ_CHIP to fix build
irqchip/mbigen: Repair non-kernel-doc notation
irqdomain: Change the type of 'size' in __irq_domain_add() to be consistent
irqchip/armada-370-xp: Fix ack/eoi breakage
Documentation: Fix irq-domain.rst build warning
Subsystems affected by this patch series: xtensa, sh, ocfs2, scripts,
lib, and mm (memory-failure, kasan, damon, shmem, tools, pagecache,
debug, and pagemap)"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm: fix uninitialized use in overcommit_policy_handler
mm/memory_failure: fix the missing pte_unmap() call
kasan: always respect CONFIG_KASAN_STACK
sh: pgtable-3level: fix cast to pointer from integer of different size
mm/debug: sync up latest migrate_reason to migrate_reason_names
mm/debug: sync up MR_CONTIG_RANGE and MR_LONGTERM_PIN
mm: fs: invalidate bh_lrus for only cold path
lib/zlib_inflate/inffast: check config in C to avoid unused function warning
tools/vm/page-types: remove dependency on opt_file for idle page tracking
scripts/sorttable: riscv: fix undeclared identifier 'EM_RISCV' error
ocfs2: drop acl cache for directories too
mm/shmem.c: fix judgment error in shmem_is_huge()
xtensa: increase size of gcc stack frame check
mm/damon: don't use strnlen() with known-bogus source length
kasan: fix Kconfig check of CC_HAS_WORKING_NOSANITIZE_ADDRESS
mm, hwpoison: add is_free_buddy_page() in HWPoisonHandlable()
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Thirty-three fixes, I'm afraid.
Essentially the build up from the last couple of weeks while I've been
dealling with Linux Plumbers conference infrastructure issues. It's
mostly the usual assortment of spelling fixes and minor corrections.
The only core relevant changes are to the sd driver to reduce the spin
up message spew and fix a small memory leak on the freeing path"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (33 commits)
scsi: ses: Retry failed Send/Receive Diagnostic commands
scsi: target: Fix spelling mistake "CONFLIFT" -> "CONFLICT"
scsi: lpfc: Fix gcc -Wstringop-overread warning, again
scsi: lpfc: Use correct scnprintf() limit
scsi: lpfc: Fix sprintf() overflow in lpfc_display_fpin_wwpn()
scsi: core: Remove 'current_tag'
scsi: acornscsi: Remove tagged queuing vestiges
scsi: fas216: Kill scmd->tag
scsi: qla2xxx: Restore initiator in dual mode
scsi: ufs: core: Unbreak the reset handler
scsi: sd_zbc: Support disks with more than 2**32 logical blocks
scsi: ufs: core: Revert "scsi: ufs: Synchronize SCSI and UFS error handling"
scsi: bsg: Fix device unregistration
scsi: sd: Make sd_spinup_disk() less noisy
scsi: ufs: ufs-pci: Fix Intel LKF link stability
scsi: mpt3sas: Clean up some inconsistent indenting
scsi: megaraid: Clean up some inconsistent indenting
scsi: sr: Fix spelling mistake "does'nt" -> "doesn't"
scsi: Remove SCSI CDROM MAINTAINERS entry
scsi: megaraid: Fix Coccinelle warning
...
Merge tag 'io_uring-5.15-2021-09-25' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
"This one looks a bit bigger than it is, but that's mainly because 2/3
of it is enabling IORING_OP_CLOSE to close direct file descriptors.
We've had a few folks using them and finding it confusing that the way
to close them is through using -1 for file update, this just brings
API symmetry for direct descriptors. Hence I think we should just do
this now and have a better API for 5.15 release. There's some room for
de-duplicating the close code, but we're leaving that for the next
merge window.
Outside of that, just small fixes:
- Poll race fixes (Hao)
- io-wq core dump exit fix (me)
- Reschedule around potentially intensive tctx and buffer iterators
on teardown (me)
- Fix for always ending up punting files update to io-wq (me)
- Put the provided buffer meta data under memcg accounting (me)
- Tweak for io_write(), removing dead code that was added with the
iterator changes in this release (Pavel)"
* tag 'io_uring-5.15-2021-09-25' of git://git.kernel.dk/linux-block:
io_uring: make OP_CLOSE consistent with direct open
io_uring: kill extra checks in io_write()
io_uring: don't punt files update to io-wq unconditionally
io_uring: put provided buffer meta data under memcg accounting
io_uring: allow conditional reschedule for intensive iterators
io_uring: fix potential req refcount underflow
io_uring: fix missing set of EPOLLONESHOT for CQ ring overflow
io_uring: fix race between poll completion and cancel_hash insertion
io-wq: ensure we exit if thread group is exiting
Merge tag 'block-5.15-2021-09-25' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- NVMe pull request via Christoph:
- keep ctrl->namespaces ordered (Christoph Hellwig)
- fix incorrect h2cdata pdu offset accounting in nvme-tcp (Sagi
Grimberg)
- handled updated hw_queues in nvme-fc more carefully (Daniel
Wagner, James Smart)
- md lock order fix (Christoph)
- fallocate locking fix (Ming)
- blktrace UAF fix (Zhihao)
- rq-qos bio tracking fix (Ming)
* tag 'block-5.15-2021-09-25' of git://git.kernel.dk/linux-block:
block: hold ->invalidate_lock in blkdev_fallocate
blktrace: Fix uaf in blk_trace access after removing by sysfs
block: don't call rq_qos_ops->done_bio if the bio isn't tracked
md: fix a lock order reversal in md_alloc
nvme: keep ctrl->namespaces ordered
nvme-tcp: fix incorrect h2cdata pdu offset accounting
nvme-fc: remove freeze/unfreeze around update_nr_hw_queues
nvme-fc: avoid race between time out and tear down
nvme-fc: update hardware queues before using them
Merge tag 'for-linus-5.15b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
"Some minor cleanups and fixes of some theoretical bugs, as well as a
fix of a bug introduced in 5.15-rc1"
* tag 'for-linus-5.15b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/x86: fix PV trap handling on secondary processors
xen/balloon: fix balloon kthread freezing
swiotlb-xen: this is PV-only on x86
xen/pci-swiotlb: reduce visibility of symbols
PCI: only build xen-pcifront in PV-enabled environments
swiotlb-xen: ensure to issue well-formed XENMEM_exchange requests
Xen/gntdev: don't ignore kernel unmapping error
xen/x86: drop redundant zeroing from cpu_initialize_context()
Merge tag 'erofs-for-5.15-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs fixes from Gao Xiang:
"Two bugfixes to fix the 4KiB blockmap chunk format availability and a
dangling pointer usage. There is also a trivial cleanup to clarify
compacted_2b if compacted_4b_initial > totalidx.
Summary:
- fix the dangling pointer use in erofs_lookup tracepoint
- fix unsupported chunk format check
- zero out compacted_2b if compacted_4b_initial > totalidx"
* tag 'erofs-for-5.15-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
erofs: clear compacted_2b if compacted_4b_initial > totalidx
erofs: fix misbehavior of unsupported chunk format check
erofs: fix up erofs_lookup tracepoint
Merge tag '5.15-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Six small cifs/smb3 fixes, two for stable:
- important fix for deferred close (found by a git functional test)
related to attribute caching on close.
- four (two cosmetic, two more serious) small fixes for problems
pointed out by smatch via Dan Carpenter
- fix for comment formatting problems pointed out by W=1"
* tag '5.15-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: fix incorrect check for null pointer in header_assemble
smb3: correct server pointer dereferencing check to be more consistent
smb3: correct smb3 ACL security descriptor
cifs: Clear modified attribute bit from inode flags
cifs: Deal with some warnings from W=1
cifs: fix a sign extension bug
Merge tag 'staging-5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are two small staging driver fixes for 5.15-rc3:
- greybus tty use-after-free bugfix
- r8188eu ioctl overlap build warning fix
Note, the r8188eu ioctl has been entirely removed for 5.16-rc1, but
it's good to get this fixed now for people using this in 5.15.
Both of these have been in linux-next for a while with no reported
issues"
* tag 'staging-5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: r8188eu: fix -Wrestrict warnings
staging: greybus: uart: fix tty use after free
Merge tag 'usb-5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB driver fixes from Greg KH:
"Here are some USB driver fixes and new device ids for 5.15-rc3.
They include:
- usb-storage quirk additions
- usb-serial new device ids
- usb-serial driver fixes
- USB roothub registration bugfix to resolve a long-reported issue
- usb gadget driver fixes for a large number of small things
- dwc2 driver fixes
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (28 commits)
USB: serial: option: add device id for Foxconn T99W265
USB: serial: cp210x: add ID for GW Instek GDM-834x Digital Multimeter
USB: serial: cp210x: add part-number debug printk
USB: serial: cp210x: fix dropped characters with CP2102
MAINTAINERS: usb, update Peter Korsgaard's entries
usb: musb: tusb6010: uninitialized data in tusb_fifo_write_unaligned()
usb-storage: Add quirk for ScanLogic SL11R-IDE older than 2.6c
Re-enable UAS for LaCie Rugged USB3-FW with fk quirk
USB: serial: option: remove duplicate USB device ID
USB: serial: mos7840: remove duplicated 0xac24 device ID
arm64: dts: qcom: ipq8074: remove USB tx-fifo-resize property
usb: gadget: f_uac2: Populate SS descriptors' wBytesPerInterval
usb: gadget: f_uac2: Add missing companion descriptor for feedback EP
usb: dwc2: gadget: Fix ISOC transfer complete handling for DDMA
usb: core: hcd: Modularize HCD stop configuration in usb_stop_hcd()
xhci: Set HCD flag to defer primary roothub registration
usb: core: hcd: Add support for deferring roothub registration
usb: dwc2: gadget: Fix ISOC flow for BDMA and Slave
usb: dwc3: core: balance phy init and exit
Revert "USB: bcma: Add a check for devm_gpiod_get"
...
Hyunchul Lee [Fri, 24 Sep 2021 15:06:16 +0000 (00:06 +0900)]
ksmbd: use LOOKUP_BENEATH to prevent the out of share access
instead of removing '..' in a given path, call
kern_path with LOOKUP_BENEATH flag to prevent
the out of share access.
ran various test on this:
smb2-cat-async smb://127.0.0.1/homes/../out_of_share
smb2-cat-async smb://127.0.0.1/homes/foo/../../out_of_share
smbclient //127.0.0.1/homes -c "mkdir ../foo2"
smbclient //127.0.0.1/homes -c "rename bar ../bar"
Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com> Cc: Ralph Boehme <slow@samba.org> Tested-by: Steve French <smfrench@gmail.com> Tested-by: Namjae Jeon <linkinjeon@kernel.org> Acked-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Currently, the asan-stack parameter is only passed along if
CFLAGS_KASAN_SHADOW is not empty, which requires KASAN_SHADOW_OFFSET to
be defined in Kconfig so that the value can be checked. In RISC-V's
case, KASAN_SHADOW_OFFSET is not defined in Kconfig, which means that
asan-stack does not get disabled with clang even when CONFIG_KASAN_STACK
is disabled, resulting in large stack warnings with allmodconfig:
drivers/video/fbdev/omap2/omapfb/displays/panel-lgphilips-lb035q02.c:117:12: error: stack frame size (14400) exceeds limit (2048) in function 'lb035q02_connect' [-Werror,-Wframe-larger-than]
static int lb035q02_connect(struct omap_dss_device *dssdev)
^
1 error generated.
Ensure that the value of CONFIG_KASAN_STACK is always passed along to
the compiler so that these warnings do not happen when
CONFIG_KASAN_STACK is disabled.
Link: https://github.com/ClangBuiltLinux/linux/issues/1453
References: 6baec880d7a5 ("kasan: turn off asan-stack for clang-8 and earlier") Link: https://lkml.kernel.org/r/20210922205525.570068-1-nathan@kernel.org Signed-off-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Marco Elver <elver@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
sh: pgtable-3level: fix cast to pointer from integer of different size
If X2TLB=y (CPU_SHX2=y or CPU_SHX3=y, e.g. migor_defconfig), pgd_t.pgd
is "unsigned long long", causing:
In file included from arch/sh/include/asm/pgtable.h:13,
from include/linux/pgtable.h:6,
from include/linux/mm.h:33,
from arch/sh/kernel/asm-offsets.c:14:
arch/sh/include/asm/pgtable-3level.h: In function `pud_pgtable':
arch/sh/include/asm/pgtable-3level.h:37:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
37 | return (pmd_t *)pud_val(pud);
| ^
Fix this by adding an intermediate cast to "unsigned long", which is
basically what the old code did before.
Link: https://lkml.kernel.org/r/2c2eef3c9a2f57e5609100a4864715ccf253d30f.1631713483.git.geert+renesas@glider.be Fixes: 9cf6fa2458443118 ("mm: rename pud_page_vaddr to pud_pgtable and make it return pmd_t *") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Daniel Palmer <daniel@thingy.jp> Acked-by: Rob Landley <rob@landley.net> Cc: Yoshinori Sato <ysato@users.osdn.me> Cc: Rich Felker <dalias@libc.org> Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com> Cc: Jacopo Mondi <jacopo+renesas@jmondi.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Minchan Kim [Fri, 24 Sep 2021 22:43:47 +0000 (15:43 -0700)]
mm: fs: invalidate bh_lrus for only cold path
The kernel test robot reported the regression of fio.write_iops[1] with
commit 8cc621d2f45d ("mm: fs: invalidate BH LRU during page migration").
Since lru_add_drain is called frequently, invalidate bh_lrus there could
increase bh_lrus cache miss ratio, which needs more IO in the end.
This patch moves the bh_lrus invalidation from the hot path( e.g.,
zap_page_range, pagevec_release) to cold path(i.e., lru_add_drain_all,
lru_cache_disable).
Zhengjun Xing confirmed
"I test the patch, the regression reduced to -2.9%"
Changbin Du [Fri, 24 Sep 2021 22:43:41 +0000 (15:43 -0700)]
tools/vm/page-types: remove dependency on opt_file for idle page tracking
Idle page tracking can also be used for process address space, not only
file mappings.
Without this change, using with '-i' option for process address space
encounters below errors reported.
$ sudo ./page-types -p $(pidof bash) -i
mark page idle: Bad file descriptor
mark page idle: Bad file descriptor
mark page idle: Bad file descriptor
mark page idle: Bad file descriptor
...
Fix the following build failure reported in [1] by adding a conditional
definition of EM_RISCV in order to allow cross-compilation on machines
which do not have EM_RISCV definition in their host.
scripts/sorttable.c:352:7: error: use of undeclared identifier 'EM_RISCV'
EM_RISCV was added to <elf.h> in glibc 2.24 so builds on systems with
glibc headers < 2.24 should show this error.
[mkubecek@suse.cz: changelog addition] Link: https://lore.kernel.org/lkml/e8965b25-f15b-c7b4-748c-d207dda9c8e8@i2se.com/ Link: https://lkml.kernel.org/r/20210913030625.4525-1-miles.chen@mediatek.com Fixes: 54fed35fd393 ("riscv: Enable BUILDTIME_TABLE_SORT") Signed-off-by: Miles Chen <miles.chen@mediatek.com> Reported-by: Stefan Wahren <stefan.wahren@i2se.com> Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Reviewed-by: Jisheng Zhang <jszhang@kernel.org> Cc: Michal Kubecek <mkubecek@suse.cz> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Markus Mayer <mmayer@broadcom.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Wengang Wang [Fri, 24 Sep 2021 22:43:35 +0000 (15:43 -0700)]
ocfs2: drop acl cache for directories too
ocfs2_data_convert_worker() is currently dropping any cached acl info
for FILE before down-converting meta lock. It should also drop for
DIRECTORY. Otherwise the second acl lookup returns the cached one (from
VFS layer) which could be already stale.
The problem we are seeing is that the acl changes on one node doesn't
get refreshed on other nodes in the following case:
setfacl -m u:user1:rwX dir1
getfacl dir1 <-- see the change for user1
getfacl dir1 <-- can't see change for user1
Link: https://lkml.kernel.org/r/20210903012631.6099-1-wen.gang.wang@oracle.com Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com> Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com> Cc: Mark Fasheh <mark@fasheh.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Changwei Ge <gechangwei@live.cn> Cc: Gang He <ghe@suse.com> Cc: Jun Piao <piaojun@huawei.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Liu Yuntao [Fri, 24 Sep 2021 22:43:32 +0000 (15:43 -0700)]
mm/shmem.c: fix judgment error in shmem_is_huge()
In the case of SHMEM_HUGE_WITHIN_SIZE, the page index is not rounded up
correctly. When the page index points to the first page in a huge page,
round_up() cannot bring it to the end of the huge page, but to the end
of the previous one.
An example:
HPAGE_PMD_NR on my machine is 512(2 MB huge page size). After
allcoating a 3000 KB buffer, I access it at location 2050 KB. In
shmem_is_huge(), the corresponding index happens to be 512. After
rounded up by HPAGE_PMD_NR, it will still be 512 which is smaller than
i_size, and shmem_is_huge() will return true. As a result, my buffer
takes an additional huge page, and that shouldn't happen when
shmem_enabled is set to within_size.
Link: https://lkml.kernel.org/r/20210909032007.18353-1-liuyuntao10@huawei.com Fixes: f3f0e1d2150b2b ("khugepaged: add support of collapse for tmpfs/shmem pages") Signed-off-by: Liu Yuntao <liuyuntao10@huawei.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Hugh Dickins <hughd@google.com> Cc: wuxu.wu <wuxu.wu@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
xtensa frame size is larger than the frame size for almost all other
architectures. This results in more than 50 "the frame size of <n> is
larger than 1024 bytes" errors when trying to build xtensa:allmodconfig.
Increase frame size for xtensa to 1536 bytes to avoid compile errors due
to frame size limits.
Link: https://lkml.kernel.org/r/20210912025235.3514761-1-linux@roeck-us.net Signed-off-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Max Filippov <jcmvbkbc@gmail.com> Cc: Chris Zankel <chris@zankel.net> Cc: David Laight <David.Laight@ACULAB.COM> Cc: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
projects / users / jedix / linux-maple.git / log