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- Clean up list_sort prototypes (Sami Tolvanen)
- Introduce CONFIG_CFI_CLANG for arm64 (Sami Tolvanen)
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Merge tag 'cfi-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull CFI on arm64 support from Kees Cook:
"This builds on last cycle's LTO work, and allows the arm64 kernels to
be built with Clang's Control Flow Integrity feature. This feature has
happily lived in Android kernels for almost 3 years[1], so I'm excited
to have it ready for upstream.
The wide diffstat is mainly due to the treewide fixing of mismatched
list_sort prototypes. Other things in core kernel are to address
various CFI corner cases. The largest code portion is the CFI runtime
implementation itself (which will be shared by all architectures
implementing support for CFI). The arm64 pieces are Acked by arm64
maintainers rather than coming through the arm64 tree since carrying
this tree over there was going to be awkward.
CFI support for x86 is still under development, but is pretty close.
There are a handful of corner cases on x86 that need some improvements
to Clang and objtool, but otherwise works well.
Summary:
- Clean up list_sort prototypes (Sami Tolvanen)
- Introduce CONFIG_CFI_CLANG for arm64 (Sami Tolvanen)"
* tag 'cfi-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
arm64: allow CONFIG_CFI_CLANG to be selected
KVM: arm64: Disable CFI for nVHE
arm64: ftrace: use function_nocfi for ftrace_call
arm64: add __nocfi to __apply_alternatives
arm64: add __nocfi to functions that jump to a physical address
arm64: use function_nocfi with __pa_symbol
arm64: implement function_nocfi
psci: use function_nocfi for cpu_resume
lkdtm: use function_nocfi
treewide: Change list_sort to use const pointers
bpf: disable CFI in dispatcher functions
kallsyms: strip ThinLTO hashes from static functions
kthread: use WARN_ON_FUNCTION_MISMATCH
workqueue: use WARN_ON_FUNCTION_MISMATCH
module: ensure __cfi_check alignment
mm: add generic function_nocfi macro
cfi: add __cficanonical
add support for Clang CFI
Now that we have multishot poll requests, one SQE can emit multiple
CQEs. given below example:
sqe0(multishot poll)-->sqe1-->sqe2(drain req)
sqe2 is designed to issue after sqe0 and sqe1 completed, but since sqe0
is a multishot poll request, sqe2 may be issued after sqe0's event
triggered twice before sqe1 completed. This isn't what users leverage
drain requests for.
Here the solution is to wait for multishot poll requests fully
completed.
To achieve this, we should reconsider the req_need_defer equation, the
original one is:
all_sqes(excluding dropped ones) == all_cqes(including dropped ones)
This means we issue a drain request when all the previous submitted
SQEs have generated their CQEs.
Now we should consider multishot requests, we deduct all the multishot
CQEs except the cancellation one, In this way a multishot poll request
behave like a normal request, so:
all_sqes == all_cqes - multishot_cqes(except cancellations)
Here we introduce cq_extra for it.
Signed-off-by: Hao Xu <haoxu@linux.alibaba.com>
Link: https://lore.kernel.org/r/1618298439-136286-1-git-send-email-haoxu@linux.alibaba.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
syzkaller identified KASAN: null-ptr-deref Write in
io_uring_cancel_sqpoll.
io_uring_cancel_sqpoll is called by io_sq_thread before calling
io_uring_alloc_task_context. This leads to current->io_uring being NULL.
io_uring_cancel_sqpoll should not have to deal with threads where
current->io_uring is NULL.
In order to cast a wider safety net, perform input sanitisation directly
in io_uring_cancel_sqpoll and return for NULL value of current->io_uring.
This is safe since if current->io_uring isn't set, then there's no way
for the task to have submitted any requests.
Reported-by: syzbot+be51ca5a4d97f017cd50@syzkaller.appspotmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Palash Oswal <hello@oswalpalash.com>
Link: https://lore.kernel.org/r/20210427125148.21816-1-hello@oswalpalash.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
When directory iterate and lookup is called, there's a buggy rewinding
of start point for traversing cluster chain to the parent directory
entry's first cluster. This caused repeated cluster chain traversing
from the first entry of the parent directory that would show worse
performance if huge amounts of files exist under the parent directory.
Fix not to rewind, make continue from currently referenced cluster and
dir entry.
Tested with 50,000 files under single directory / 256GB sdcard,
with command "time ls -l > /dev/null",
Before : 0m08.69s real 0m00.27s user 0m05.91s system
After : 0m07.01s real 0m00.25s user 0m04.34s system
Signed-off-by: Hyeongseok Kim <hyeongseok@gmail.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Degradation of write speed caused by frequent disk access for cluster
bitmap update on every cluster allocation could be improved by
selective syncing bitmap buffer. Change to flush bitmap buffer only
for the directory related operations.
Signed-off-by: Hyeongseok Kim <hyeongseok@gmail.com>
Acked-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Add FITRIM ioctl to enable discarding unused blocks while mounted.
As current exFAT doesn't have generic ioctl handler, add empty ioctl
function first, and add FITRIM handler.
Signed-off-by: Hyeongseok Kim <hyeongseok@gmail.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Acked-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
s_lock which is for protecting concurrent access of file operations is
too huge for cluster bitmap protection, so introduce a new bitmap_lock
to narrow the lock range if only need to access cluster bitmap.
Signed-off-by: Hyeongseok Kim <hyeongseok@gmail.com>
Acked-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
If mounted with discard option, exFAT issues discard command when clear
cluster bit to remove file. But the input parameter of cluster-to-sector
calculation is abnormally added by reserved cluster size which is 2,
leading to discard unrelated sectors included in target+2 cluster.
With fixing this, remove the wrong comments in set/clear/find bitmap
functions.
Fixes: 1e49a94cf707 ("exfat: add bitmap operations")
Cc: stable@vger.kernel.org # v5.7+
Signed-off-by: Hyeongseok Kim <hyeongseok@gmail.com>
Acked-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Fix some miscellaneous things in the new netfs lib[1]:
(1) The kerneldoc for netfs_readpage() shouldn't say netfs_page().
(2) netfs_readpage() can get an integer overflow on 32-bit when it
multiplies page_index(page) by PAGE_SIZE. It should use
page_file_offset() instead.
(3) netfs_write_begin() should use page_offset() to avoid the same
overflow.
Note that netfs_readpage() needs to use page_file_offset() rather than
page_offset() as it may see swap-over-NFS.
Reported-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Link: https://lore.kernel.org/r/161789062190.6155.12711584466338493050.stgit@warthog.procyon.org.uk/ [1]
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Merge tag 'for-5.13-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"The updates this time are mostly stabilization, preparation and minor
improvements.
User visible improvements:
- readahead for send, improving run time of full send by 10% and for
incremental by 25%
- make reflinks respect O_SYNC, O_DSYNC and S_SYNC flags
- export supported sectorsize values in sysfs (currently only page
size, more once full subpage support lands)
- more graceful errors and warnings on 32bit systems when logical
addresses for metadata reach the limit posed by unsigned long in
page::index
- error: fail mount if there's a metadata block beyond the limit
- error: new metadata block would be at unreachable address
- warn when 5/8th of the limit is reached, for 4K page systems
it's 10T, for 64K page it's 160T
- zoned mode
- relocated zones get reset at the end instead of discard
- automatic background reclaim of zones that have 75%+ of unusable
space, the threshold is tunable in sysfs
Fixes:
- fsync and tree mod log fixes
- fix inefficient preemptive reclaim calculations
- fix exhaustion of the system chunk array due to concurrent
allocations
- fix fallback to no compression when racing with remount
- preemptive fix for dm-crypt on zoned device that does not properly
advertise zoned support
Core changes:
- add inode lock to synchronize mmap and other block updates (eg.
deduplication, fallocate, fsync)
- kmap conversions to new kmap_local API
- subpage support (continued)
- new helpers for page state/extent buffer tracking
- metadata changes now support read and write
- error handling through out relocation call paths
- many other cleanups and code simplifications"
* tag 'for-5.13-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (112 commits)
btrfs: zoned: automatically reclaim zones
btrfs: rename delete_unused_bgs_mutex to reclaim_bgs_lock
btrfs: zoned: reset zones of relocated block groups
btrfs: more graceful errors/warnings on 32bit systems when reaching limits
btrfs: zoned: fix unpaired block group unfreeze during device replace
btrfs: fix race when picking most recent mod log operation for an old root
btrfs: fix metadata extent leak after failure to create subvolume
btrfs: handle remount to no compress during compression
btrfs: zoned: fail mount if the device does not support zone append
btrfs: fix race between transaction aborts and fsyncs leading to use-after-free
btrfs: introduce submit_eb_subpage() to submit a subpage metadata page
btrfs: make lock_extent_buffer_for_io() to be subpage compatible
btrfs: introduce write_one_subpage_eb() function
btrfs: introduce end_bio_subpage_eb_writepage() function
btrfs: check return value of btrfs_commit_transaction in relocation
btrfs: do proper error handling in merge_reloc_roots
btrfs: handle extent corruption with select_one_root properly
btrfs: cleanup error handling in prepare_to_merge
btrfs: do not panic in __add_reloc_root
btrfs: handle __add_reloc_root failures in btrfs_recover_relocation
...
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Merge tag '5.12-rc-smb3-fixes-part1' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs updates from Steve French:
- improvements to root directory metadata caching
- addition of new "rasize" mount parameter which can significantly
increase read ahead performance (e.g. copy can be much faster,
especially with multichannel)
- addition of support for insert and collapse range
- improvements to error handling in mount
* tag '5.12-rc-smb3-fixes-part1' of git://git.samba.org/sfrench/cifs-2.6: (40 commits)
cifs: update internal version number
smb3: add rasize mount parameter to improve readahead performance
smb3: limit noisy error
cifs: fix leak in cifs_smb3_do_mount() ctx
cifs: remove unnecessary copies of tcon->crfid.fid
cifs: Return correct error code from smb2_get_enc_key
cifs: fix out-of-bound memory access when calling smb3_notify() at mount point
smb2: fix use-after-free in smb2_ioctl_query_info()
cifs: export supported mount options via new mount_params /proc file
cifs: log mount errors using cifs_errorf()
cifs: add fs_context param to parsing helpers
cifs: make fs_context error logging wrapper
cifs: add FALLOC_FL_INSERT_RANGE support
cifs: add support for FALLOC_FL_COLLAPSE_RANGE
cifs: check the timestamp for the cached dirent when deciding on revalidate
cifs: pass the dentry instead of the inode down to the revalidation check functions
cifs: add a timestamp to track when the lease of the cached dir was taken
cifs: add a function to get a cached dir based on its dentry
cifs: Grab a reference for the dentry of the cached directory during the lifetime of the cache
cifs: store a pointer to the root dentry in cifs_sb_info once we have completed mounting the share
...
- Update NFSv2 and NFSv3 XDR encoding functions
- Add batch Receive posting to the server's RPC/RDMA transport (take 2)
- Reduce page allocator traffic in svcrdma
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Merge tag 'nfsd-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux
Pull nfsd updates from Chuck Lever:
"Highlights:
- Update NFSv2 and NFSv3 XDR encoding functions
- Add batch Receive posting to the server's RPC/RDMA transport (take 2)
- Reduce page allocator traffic in svcrdma"
* tag 'nfsd-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (70 commits)
NFSD: Use DEFINE_SPINLOCK() for spinlock
sunrpc: Remove unused function ip_map_lookup
NFSv4.2: fix copy stateid copying for the async copy
UAPI: nfsfh.h: Replace one-element array with flexible-array member
svcrdma: Clean up dto_q critical section in svc_rdma_recvfrom()
svcrdma: Remove svc_rdma_recv_ctxt::rc_pages and ::rc_arg
svcrdma: Remove sc_read_complete_q
svcrdma: Single-stage RDMA Read
SUNRPC: Move svc_xprt_received() call sites
SUNRPC: Export svc_xprt_received()
svcrdma: Retain the page backing rq_res.head[0].iov_base
svcrdma: Remove unused sc_pages field
svcrdma: Normalize Send page handling
svcrdma: Add a "deferred close" helper
svcrdma: Maintain a Receive water mark
svcrdma: Use svc_rdma_refresh_recvs() in wc_receive
svcrdma: Add a batch Receive posting mechanism
svcrdma: Remove stale comment for svc_rdma_wc_receive()
svcrdma: Provide an explanatory comment in CMA event handler
svcrdma: RPCDBG_FACILITY is no longer used
...
- avoid memory failure when applying rolling decompression;
- optimize endio decompression logic for non-atomic contexts;
- complete a missing case which can be safely selected for inplace
I/O and thus decreasing more memory footprint;
- check unsupported on-disk inode i_format strictly;
- support adjustable lz4 sliding window size to decrease runtime
memory footprint;
- support on-disk compression configurations;
- support big pcluster decompression;
- several code cleanups / spelling correction.
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Merge tag 'erofs-for-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs updates from Gao Xiang:
"In this cycle, we would like to introduce a new feature called big
pcluster so EROFS can compress file data into more than 1 fs block and
different pcluster size can be selected for each (sub-)files by
design.
The current EROFS test results on my laptop are [1]:
Testscript: erofs-openbenchmark
Testdata: enwik9 (1000000000 bytes)
________________________________________________________________
| file system | size | seq read | rand read | rand9m read |
|_______________|___________|_ MiB/s __|__ MiB/s __|___ MiB/s ___|
|___erofs_4k____|_556879872_|_ 781.4 __|__ 55.3 ___|___ 25.3 ___|
|___erofs_16k___|_452509696_|_ 864.8 __|_ 123.2 ___|___ 20.8 ___|
|___erofs_32k___|_415223808_|_ 899.8 __|_ 105.8 _*_|___ 16.8 ____|
|___erofs_64k___|_393814016_|_ 906.6 __|__ 66.6 _*_|___ 11.8 ____|
|__squashfs_8k__|_556191744_|_ 64.9 __|__ 19.3 ___|____ 9.1 ____|
|__squashfs_16k_|_502661120_|_ 98.9 __|__ 38.0 ___|____ 9.8 ____|
|__squashfs_32k_|_458784768_|_ 115.4 __|__ 71.6 _*_|___ 10.0 ____|
|_squashfs_128k_|_398204928_|_ 257.2 __|_ 253.8 _*_|___ 10.9 ____|
|____ext4_4k____|____()_____|_ 786.6 __|__ 28.6 ___|___ 27.8 ____|
which has been verified but I'd like warn it as experimental for a
while. This matches erofs-utils dev branch and I'll also release a new
userspace version for this later.
Apart from that, several improvements are also included: eg complete a
missing case for inplace I/O, optimize endio decompression logic for
non-atomic contexts and support adjustable sliding window size, ... In
addition to those, there are some cleanups as always.
Summary:
- avoid memory failure when applying rolling decompression
- optimize endio decompression logic for non-atomic contexts
- complete a missing case which can be safely selected for inplace
I/O and thus decreasing more memory footprint
- check unsupported on-disk inode i_format strictly
- support adjustable lz4 sliding window size to decrease runtime
memory footprint
- support on-disk compression configurations
- support big pcluster decompression
- several code cleanups / spelling correction"
* tag 'erofs-for-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs: (21 commits)
erofs: enable big pcluster feature
erofs: support decompress big pcluster for lz4 backend
erofs: support parsing big pcluster compact indexes
erofs: support parsing big pcluster compress indexes
erofs: adjust per-CPU buffers according to max_pclusterblks
erofs: add big physical cluster definition
erofs: fix up inplace I/O pointer for big pcluster
erofs: introduce physical cluster slab pools
erofs: introduce multipage per-CPU buffers
erofs: reserve physical_clusterbits[]
erofs: Clean up spelling mistakes found in fs/erofs
erofs: add on-disk compression configurations
erofs: introduce on-disk lz4 fs configurations
erofs: support adjust lz4 history window size
erofs: introduce erofs_sb_has_xxx() helpers
erofs: add unsupported inode i_format check
erofs: don't use erofs_map_blocks() any more
erofs: complete a missing case for inplace I/O
erofs: use sync decompression for atomic contexts only
erofs: use workqueue decompression for atomic contexts only
...
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Merge tag 'locks-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux
Pull file locking updates from Jeff Layton:
"When we reworked the blocked locks into a tree structure instead of a
flat list a few releases ago, we lost the ability to see all of the
file locks in /proc/locks. Luo's patch fixes it to dump out all of the
blocked locks instead, which restores the full output.
This changes the format of /proc/locks as the blocked locks are shown
at multiple levels of indentation now, but lslocks (the only common
program I've ID'ed that scrapes this info) seems to be OK with that.
Tian also contributed a small patch to remove a useless assignment"
* tag 'locks-v5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux:
fs/locks: remove useless assignment in fcntl_getlk
fs/locks: print full locks information
well contained to Documentation/ itself. Highlights include:
- The Chinese translators have been busy and show no signs of stopping
anytime soon. Italian has also caught up.
- Aditya Srivastava has been working on improvements to the kernel-doc
script.
- Thorsten continues his work on reporting-issues.rst and related
documentation around regression reporting.
- Lots of documentation updates, typo fixes, etc. as usual
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Merge tag 'docs-5.13' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"It's been a relatively busy cycle in docsland, though more than
usually well contained to Documentation/ itself. Highlights include:
- The Chinese translators have been busy and show no signs of
stopping anytime soon. Italian has also caught up.
- Aditya Srivastava has been working on improvements to the
kernel-doc script.
- Thorsten continues his work on reporting-issues.rst and related
documentation around regression reporting.
- Lots of documentation updates, typo fixes, etc. as usual"
* tag 'docs-5.13' of git://git.lwn.net/linux: (139 commits)
docs/zh_CN: add openrisc translation to zh_CN index
docs/zh_CN: add openrisc index.rst translation
docs/zh_CN: add openrisc todo.rst translation
docs/zh_CN: add openrisc openrisc_port.rst translation
docs/zh_CN: add core api translation to zh_CN index
docs/zh_CN: add core-api index.rst translation
docs/zh_CN: add core-api irq index.rst translation
docs/zh_CN: add core-api irq irqflags-tracing.rst translation
docs/zh_CN: add core-api irq irq-domain.rst translation
docs/zh_CN: add core-api irq irq-affinity.rst translation
docs/zh_CN: add core-api irq concepts.rst translation
docs: sphinx-pre-install: don't barf on beta Sphinx releases
scripts: kernel-doc: improve parsing for kernel-doc comments syntax
docs/zh_CN: two minor fixes in zh_CN/doc-guide/
Documentation: dev-tools: Add Testing Overview
docs/zh_CN: add translations in zh_CN/dev-tools/gcov
docs: reporting-issues: make people CC the regressions list
MAINTAINERS: add regressions mailing list
doc:it_IT: align Italian documentation
docs/zh_CN: sync reporting-issues.rst
...
Here is the "big" set of driver core changes for 5.13-rc1.
Nothing major, just lots of little core changes and cleanups, notable
things are:
- finally set fw_devlink=on by default. All reported issues
with this have been shaken out over the past 9 months or so,
but we will be paying attention to any fallout here in case we
need to revert this as the default boot value (symptoms of
problems are a simple lack of booting)
- fixes found to be needed by fw_devlink=on value in some
subsystems (like clock).
- delayed work initialization cleanup
- driver core cleanups and minor updates
- software node cleanups and tweaks
- devtmpfs cleanups
- minor debugfs cleanups
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is the "big" set of driver core changes for 5.13-rc1.
Nothing major, just lots of little core changes and cleanups, notable
things are:
- finally set 'fw_devlink=on' by default.
All reported issues with this have been shaken out over the past 9
months or so, but we will be paying attention to any fallout here
in case we need to revert this as the default boot value (symptoms
of problems are a simple lack of booting)
- fixes found to be needed by fw_devlink=on value in some subsystems
(like clock).
- delayed work initialization cleanup
- driver core cleanups and minor updates
- software node cleanups and tweaks
- devtmpfs cleanups
- minor debugfs cleanups
All of these have been in linux-next for a while with no reported
issues"
* tag 'driver-core-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (53 commits)
devm-helpers: Fix devm_delayed_work_autocancel() kerneldoc
PM / wakeup: use dev_set_name() directly
software node: Allow node addition to already existing device
kunit: software node: adhear to KUNIT formatting standard
node: fix device cleanups in error handling code
kobject_uevent: remove warning in init_uevent_argv()
debugfs: Make debugfs_allow RO after init
Revert "driver core: platform: Make platform_get_irq_optional() optional"
media: ipu3-cio2: Switch to use SOFTWARE_NODE_REFERENCE()
software node: Introduce SOFTWARE_NODE_REFERENCE() helper macro
software node: Imply kobj_to_swnode() to be no-op
software node: Deduplicate code in fwnode_create_software_node()
software node: Introduce software_node_alloc()/software_node_free()
software node: Free resources explicitly when swnode_register() fails
debugfs: drop pointless nul-termination in debugfs_read_file_bool()
driver core: add helper for deferred probe reason setting
driver core: Improve fw_devlink & deferred_probe_timeout interaction
of: property: fw_devlink: Add support for remote-endpoint
driver core: platform: Make platform_get_irq_optional() optional
driver core: Replace printf() specifier and drop unneeded casting
...
If filesystem has cp_error or need_fsck status, let's drop inplace IO
to avoid further corruption of fs data.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
In only call path of __cluster_may_compress(), __f2fs_write_data_pages()
has checked SBI_POR_DOING condition, and also cluster_may_compress()
has checked CP_ERROR_FLAG condition, so remove redundant check condition
in __cluster_may_compress() for cleanup.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Pull crypto updates from Herbert Xu:
"API:
- crypto_destroy_tfm now ignores errors as well as NULL pointers
Algorithms:
- Add explicit curve IDs in ECDH algorithm names
- Add NIST P384 curve parameters
- Add ECDSA
Drivers:
- Add support for Green Sardine in ccp
- Add ecdh/curve25519 to hisilicon/hpre
- Add support for AM64 in sa2ul"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (184 commits)
fsverity: relax build time dependency on CRYPTO_SHA256
fscrypt: relax Kconfig dependencies for crypto API algorithms
crypto: camellia - drop duplicate "depends on CRYPTO"
crypto: s5p-sss - consistently use local 'dev' variable in probe()
crypto: s5p-sss - remove unneeded local variable initialization
crypto: s5p-sss - simplify getting of_device_id match data
ccp: ccp - add support for Green Sardine
crypto: ccp - Make ccp_dev_suspend and ccp_dev_resume void functions
crypto: octeontx2 - add support for OcteonTX2 98xx CPT block.
crypto: chelsio/chcr - Remove useless MODULE_VERSION
crypto: ux500/cryp - Remove duplicate argument
crypto: chelsio - remove unused function
crypto: sa2ul - Add support for AM64
crypto: sa2ul - Support for per channel coherency
dt-bindings: crypto: ti,sa2ul: Add new compatible for AM64
crypto: hisilicon - enable new error types for QM
crypto: hisilicon - add new error type for SEC
crypto: hisilicon - support new error types for ZIP
crypto: hisilicon - dynamic configuration 'err_info'
crypto: doc - fix kernel-doc notation in chacha.c and af_alg.c
...
io_import_fixed() doesn't expect a registered buffer slot to be NULL and
would fail stumbling on it. We don't allow it, but if during
__io_sqe_buffers_update() rsrc removal succeeds but following register
fails, we'll get such a situation.
Do it atomically and don't remove buffers until we sure that a new one
can be set.
Fixes: 634d00df5e1cf ("io_uring: add full-fledged dynamic buffers support")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/830020f9c387acddd51962a3123b5566571b8c6d.1619446608.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The client SSC code should not depend on any of the CONFIG_NFSD config.
This patch removes all CONFIG_NFSD from NFSv4.2 client SSC code and
simplifies the config of CONFIG_NFS_V4_2_SSC_HELPER, NFSD_V4_2_INTER_SSC.
Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
All sqpoll rings (even sharing sqpoll task) are currently dead bound
to the task that created them, iow when owner task dies it kills all
its SQPOLL rings and their inflight requests via task_work infra. It's
neither the nicist way nor the most convenient as adds extra
locking/waiting and dependencies.
Leave it alone and rely on SIGKILL being delivered on its thread group
exit, so there are only two cases left:
1) thread group is dying, so sqpoll task gets a signal and exit itself
cancelling all requests.
2) an sqpoll ring is dying. Because refs_kill() is called the sqpoll not
going to submit any new request, and that's what we need. And
io_ring_exit_work() will do all the cancellation itself before
actually killing ctx, so sqpoll doesn't need to worry about it.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/3cd7f166b9c326a2c932b70e71a655b03257b366.1619389911.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
After closing an SQPOLL ring, io_ring_exit_work() kicks in and starts
doing cancellations via io_uring_try_cancel_requests(). It will go
through io_uring_try_cancel_iowq(), which uses ctx->tctx_list, but as
SQPOLL task don't have a ctx note, its io-wq won't be reachable and so
is left not cancelled.
It will eventually cancelled when one of the tasks dies, but if a thread
group survives for long and changes rings, it will spawn lots of
unreclaimed resources and live locked works.
Cancel SQPOLL task's io-wq separately in io_ring_exit_work().
Cc: stable@vger.kernel.org
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/a71a7fe345135d684025bb529d5cb1d8d6b46e10.1619389911.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The variable up.resv is not initialized and is being checking for a
non-zero value in the call to _io_register_rsrc_update. Fix this by
explicitly setting the variable to 0.
Addresses-Coverity: ("Uninitialized scalar variable)"
Fixes: c3bdad027183 ("io_uring: add generic rsrc update with tags")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210426094735.8320-1-colin.king@canonical.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Now we allocate io_mapped_ubuf instead of bvec, so we clearly have to
check its address after allocation.
Fixes: 41edf1a5ec967 ("io_uring: keep table of pointers to ubufs")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/d28eb1bc4384284f69dbce35b9f70c115ff6176f.1619392565.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
In some cases readahead of more than the read size can help
(to allow parallel i/o of read ahead which can improve performance).
Ceph introduced a mount parameter "rasize" to allow controlling this.
Add mount parameter "rasize" to allow control of amount of readahead
requested of the server. If rasize not set, rasize defaults to
negotiated rsize as before.
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
For servers which don't support copy_range (SMB3 CopyChunk), the
logging of:
CIFS: VFS: \\server\share refcpy ioctl error -95 getting resume key
can fill the client logs and make debugging real problems more
difficult. Change the -EOPNOTSUPP on copy_range to a "warn once"
Signed-off-by: Steve French <stfrench@microsoft.com>
pfid is being set to tcon->crfid.fid and they are copied in each other
multiple times. Remove the memcopy between same pointers - memory
locations.
Addresses-Coverity: ("Overlapped copy")
Fixes: 9e81e8ff74b9 ("cifs: return cached_fid from open_shroot")
Signed-off-by: Muhammad Usama Anjum <musamaanjum@gmail.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
If smb3_notify() is called at mount point of CIFS, build_path_from_dentry()
returns the pointer to kmalloc-ed memory with terminating zero (this is
empty FileName to be passed to SMB2 CREATE request). This pointer is assigned
to the `path` variable.
Then `path + 1` (to skip first backslash symbol) is passed to
cifs_convert_path_to_utf16(). This is incorrect for empty path and causes
out-of-bound memory access.
Get rid of this "increase by one". cifs_convert_path_to_utf16() already
contains the check for leading backslash in the path.
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=212693
CC: <stable@vger.kernel.org> # v5.6+
Signed-off-by: Eugene Korenevsky <ekorenevsky@astralinux.ru>
Signed-off-by: Steve French <stfrench@microsoft.com>
* rqst[1,2,3] is allocated in vars
* each rqst->rq_iov is also allocated in vars or using pooled memory
SMB2_open_free, SMB2_ioctl_free, SMB2_query_info_free are iterating on
each rqst after vars has been freed (use-after-free), and they are
freeing the kvec a second time (double-free).
How to trigger:
* compile with KASAN
* mount a share
$ smbinfo quota /mnt/foo
Segmentation fault
$ dmesg
==================================================================
BUG: KASAN: use-after-free in SMB2_open_free+0x1c/0xa0
Read of size 8 at addr ffff888007b10c00 by task python3/1200
CPU: 2 PID: 1200 Comm: python3 Not tainted 5.12.0-rc6+ #107
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.14.0-0-g155821a-rebuilt.opensuse.org 04/01/2014
Call Trace:
dump_stack+0x93/0xc2
print_address_description.constprop.0+0x18/0x130
? SMB2_open_free+0x1c/0xa0
? SMB2_open_free+0x1c/0xa0
kasan_report.cold+0x7f/0x111
? smb2_ioctl_query_info+0x240/0x990
? SMB2_open_free+0x1c/0xa0
SMB2_open_free+0x1c/0xa0
smb2_ioctl_query_info+0x2bf/0x990
? smb2_query_reparse_tag+0x600/0x600
? cifs_mapchar+0x250/0x250
? rcu_read_lock_sched_held+0x3f/0x70
? cifs_strndup_to_utf16+0x12c/0x1c0
? rwlock_bug.part.0+0x60/0x60
? rcu_read_lock_sched_held+0x3f/0x70
? cifs_convert_path_to_utf16+0xf8/0x140
? smb2_check_message+0x6f0/0x6f0
cifs_ioctl+0xf18/0x16b0
? smb2_query_reparse_tag+0x600/0x600
? cifs_readdir+0x1800/0x1800
? selinux_bprm_creds_for_exec+0x4d0/0x4d0
? do_user_addr_fault+0x30b/0x950
? __x64_sys_openat+0xce/0x140
__x64_sys_ioctl+0xb9/0xf0
do_syscall_64+0x33/0x40
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fdcf1f4ba87
Code: b3 66 90 48 8b 05 11 14 2c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 13 2c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffef1ce7748 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000c018cf07 RCX: 00007fdcf1f4ba87
RDX: 0000564c467c5590 RSI: 00000000c018cf07 RDI: 0000000000000003
RBP: 00007ffef1ce7770 R08: 00007ffef1ce7420 R09: 00007fdcf0e0562b
R10: 0000000000000100 R11: 0000000000000246 R12: 0000000000004018
R13: 0000000000000001 R14: 0000000000000003 R15: 0000564c467c5590
Allocated by task 1200:
kasan_save_stack+0x1b/0x40
__kasan_kmalloc+0x7a/0x90
smb2_ioctl_query_info+0x10e/0x990
cifs_ioctl+0xf18/0x16b0
__x64_sys_ioctl+0xb9/0xf0
do_syscall_64+0x33/0x40
entry_SYSCALL_64_after_hwframe+0x44/0xae
Freed by task 1200:
kasan_save_stack+0x1b/0x40
kasan_set_track+0x1c/0x30
kasan_set_free_info+0x20/0x30
__kasan_slab_free+0xe5/0x110
slab_free_freelist_hook+0x53/0x130
kfree+0xcc/0x320
smb2_ioctl_query_info+0x2ad/0x990
cifs_ioctl+0xf18/0x16b0
__x64_sys_ioctl+0xb9/0xf0
do_syscall_64+0x33/0x40
entry_SYSCALL_64_after_hwframe+0x44/0xae
The buggy address belongs to the object at ffff888007b10c00
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 0 bytes inside of
512-byte region [ffff888007b10c00, ffff888007b10e00)
The buggy address belongs to the page:
page:0000000044e14b75 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7b10
head:0000000044e14b75 order:2 compound_mapcount:0 compound_pincount:0
flags: 0x100000000010200(slab|head)
raw: 0100000000010200 ffffea000015f500 0000000400000004 ffff888001042c80
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888007b10b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff888007b10b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888007b10c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888007b10c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888007b10d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Can aid in making mount problems easier to diagnose
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This makes the errors accessible from userspace via dmesg and
the fs_context fd.
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Add fs_context param to parsing helpers to be able to log into it in
next patch.
Make some helper static as they are not used outside of fs_context.c
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This new helper will be used in the fs_context mount option parsing
code. It log errors both in:
* the fs_context log queue for userspace to read
* kernel printk buffer (dmesg, old behaviour)
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Emulated via server side copy and setsize for
SMB3 and later. In the future we could compound
this (and/or optionally use DUPLICATE_EXTENTS
if supported by the server).
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Emulated for SMB3 and later via server side copy
and setsize. Eventually this could be compounded.
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Needed for the final patch in the directory caching series
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
and clear the timestamp when we receive a lease break.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Needed for subsequent patches in the directory caching
series.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
We need to hold both a reference for the root/superblock as well as the directory that we
are caching. We need to drop these references before we call kill_anon_sb().
At this point, the root and the cached dentries are always the same but this will change
once we start caching other directories as well.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
And use this to only allow to take out a shared handle once the mount has completed and the
sb becomes available.
This will become important in follow up patches where we will start holding a reference to the
directory dentry for the shared handle during the lifetime of the handle.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
These functions will eventually be used to cache any directory, not just the root
so change the names.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Move the check for the directory path into the open_shroot() function
but still fail for any non-root directories.
This is preparation for later when we will start using the cache also
for other directories than the root.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
instead of doing it in the callsites for open_shroot.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
