Right now inode->i_mode is updated twice to reach the desired value
in tracefs_apply_options(). Because there is no lock protecting the two
writes, other threads might read the intermediate value of inode->i_mode.
Thread-1 Thread-2
// tracefs_apply_options() //e.g., acl_permission_check
inode->i_mode &= ~S_IALLUGO;
unsigned int mode = inode->i_mode;
inode->i_mode |= opts->mode;
I think there is no need to introduce a lock but it is better to
only update inode->i_mode ONCE, so the readers will either see the old
or latest value, rather than an intermediate/temporary value.
Note, the race is not a security concern as the intermediate value is more
locked down than either the start or end version. This is more just to do
the conversion cleanly.
Link: https://lore.kernel.org/linux-trace-kernel/AB5B0A1C-75D9-4E82-A7F0-CF7D0715587B@gmail.com
Signed-off-by: Sishuai Gong <sishuai.system@gmail.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Up until now, /sys/kernel/tracing/events was no different than any other
part of tracefs. The files and directories within the events directory was
created when the tracefs was mounted, and also created for the instances in
/sys/kernel/tracing/instances/<instance>/events. Most of these files and
directories will never be referenced. Since there are thousands of these
files and directories they spend their time wasting precious memory
resources.
Move the "events" directory to the new eventfs. The eventfs will take the
meta data of the events that they represent and store that. When the files
in the events directory are referenced, the dentry and inodes to represent
them are then created. When the files are no longer referenced, they are
freed. This saves the precious memory resources that were wasted on these
seldom referenced dentries and inodes.
Running the following:
~# cat /proc/meminfo /proc/slabinfo > before.out
~# mkdir /sys/kernel/tracing/instances/foo
~# cat /proc/meminfo /proc/slabinfo > after.out
to test the changes produces the following deltas:
Before this change:
Before after deltas for meminfo:
MemFree: -32260
MemAvailable: -21496
KReclaimable: 21528
Slab: 22440
SReclaimable: 21528
SUnreclaim: 912
VmallocUsed: 16
Before after deltas for slabinfo:
<slab>: <objects> [ * <size> = <total>]
tracefs_inode_cache: 14472 [* 1184 = 17134848]
buffer_head: 24 [* 168 = 4032]
hmem_inode_cache: 28 [* 1480 = 41440]
dentry: 14450 [* 312 = 4508400]
lsm_inode_cache: 14453 [* 32 = 462496]
vma_lock: 11 [* 152 = 1672]
vm_area_struct: 2 [* 184 = 368]
trace_event_file: 1748 [* 88 = 153824]
kmalloc-256: 1072 [* 256 = 274432]
kmalloc-64: 2842 [* 64 = 181888]
Total slab additions in size: 22,763,400 bytes
With this change:
Before after deltas for meminfo:
MemFree: -12600
MemAvailable: -12580
Cached: 24
Active: 12
Inactive: 68
Inactive(anon): 48
Active(file): 12
Inactive(file): 20
Dirty: -4
AnonPages: 68
KReclaimable: 12
Slab: 1856
SReclaimable: 12
SUnreclaim: 1844
KernelStack: 16
PageTables: 36
VmallocUsed: 16
Before after deltas for slabinfo:
<slab>: <objects> [ * <size> = <total>]
tracefs_inode_cache: 108 [* 1184 = 127872]
buffer_head: 24 [* 168 = 4032]
hmem_inode_cache: 18 [* 1480 = 26640]
dentry: 127 [* 312 = 39624]
lsm_inode_cache: 152 [* 32 = 4864]
vma_lock: 67 [* 152 = 10184]
vm_area_struct: -12 [* 184 = -2208]
trace_event_file: 1764 [* 96 = 169344]
kmalloc-96: 14322 [* 96 = 1374912]
kmalloc-64: 2814 [* 64 = 180096]
kmalloc-32: 1103 [* 32 = 35296]
kmalloc-16: 2308 [* 16 = 36928]
kmalloc-8: 12800 [* 8 = 102400]
Total slab additions in size: 2,109,984 bytes
Which is a savings of 20,653,416 bytes (20 MB) per tracing instance.
Link: https://lkml.kernel.org/r/1690568452-46553-10-git-send-email-akaher@vmware.com
Signed-off-by: Ajay Kaher <akaher@vmware.com>
Co-developed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Tested-by: Ching-lin Yu <chinglinyu@google.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
When events are removed from tracefs, the eventfs must be aware of this.
The eventfs_remove() removes the meta data from eventfs so that it will no
longer create the files associated with that event.
When an instance is removed from tracefs, eventfs_remove_events_dir() will
remove and clean up the entire "events" directory.
The helper function eventfs_remove_rec() is used to clean up and free the
associated data from eventfs for both of the added functions. SRCU is used
to protect the lists of meta data stored in the eventfs. The eventfs_mutex
is used to protect the content of the items in the list.
As lookups may be happening as deletions of events are made, the freeing
of dentry/inodes and relative information is done after the SRCU grace
period has passed.
Link: https://lkml.kernel.org/r/1690568452-46553-9-git-send-email-akaher@vmware.com
Signed-off-by: Ajay Kaher <akaher@vmware.com>
Co-developed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Tested-by: Ching-lin Yu <chinglinyu@google.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202305030611.Kas747Ev-lkp@intel.com/
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Add create_file() and create_dir() functions to create the files and
directories respectively when they are accessed. The functions will be
called from the lookup operation of the inode_operations or from the open
function of file_operations.
Link: https://lkml.kernel.org/r/1690568452-46553-8-git-send-email-akaher@vmware.com
Signed-off-by: Ajay Kaher <akaher@vmware.com>
Co-developed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Tested-by: Ching-lin Yu <chinglinyu@google.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Add the inode_operations, file_operations, and helper functions to eventfs:
dcache_dir_open_wrapper()
eventfs_root_lookup()
eventfs_release()
eventfs_set_ef_status_free()
eventfs_post_create_dir()
The inode_operations and file_operations functions will be called from the
VFS layer.
create_file() and create_dir() are added as stub functions and will be
filled in later.
Link: https://lkml.kernel.org/r/1690568452-46553-7-git-send-email-akaher@vmware.com
Signed-off-by: Ajay Kaher <akaher@vmware.com>
Co-developed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Tested-by: Ching-lin Yu <chinglinyu@google.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Add the following functions to add files to evenfs:
eventfs_add_events_file() to add the data needed to create a specific file
located at the top level events directory. The dentry/inode will be
created when the events directory is scanned.
eventfs_add_file() to add the data needed for files within the directories
below the top level events directory. The dentry/inode of the file will be
created when the directory that the file is in is scanned.
Link: https://lkml.kernel.org/r/1690568452-46553-6-git-send-email-akaher@vmware.com
Signed-off-by: Ajay Kaher <akaher@vmware.com>
Co-developed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Tested-by: Ching-lin Yu <chinglinyu@google.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202305051619.9a469a9a-yujie.liu@intel.com
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Add eventfs_file structure which will hold the properties of the eventfs
files and directories.
Add following functions to create the directories in eventfs:
eventfs_create_events_dir() will create the top level "events" directory
within the tracefs file system.
eventfs_add_subsystem_dir() creates an eventfs_file descriptor with the
given name of the subsystem.
eventfs_add_dir() creates an eventfs_file descriptor with the given name of
the directory and attached to a eventfs_file of a subsystem.
Add tracefs_inode structure to hold the inodes, flags and pointers to
private data used by eventfs.
Link: https://lkml.kernel.org/r/1690568452-46553-5-git-send-email-akaher@vmware.com
Signed-off-by: Ajay Kaher <akaher@vmware.com>
Co-developed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Tested-by: Ching-lin Yu <chinglinyu@google.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202305051619.9a469a9a-yujie.liu@intel.com
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Export a few tracefs functions that will be needed by the eventfs dynamic
file system. Rename them to start with "tracefs_" to keep with the name
space.
start_creating -> tracefs_start_creating
failed_creating -> tracefs_failed_creating
end_creating -> tracefs_end_creating
Link: https://lkml.kernel.org/r/1690568452-46553-4-git-send-email-akaher@vmware.com
Signed-off-by: Ajay Kaher <akaher@vmware.com>
Co-developed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Tested-by: Ching-lin Yu <chinglinyu@google.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Create a kmem cache of tracefs_inodes. To be more efficient, as there are
lots of tracefs inodes, create its own cache. This also allows to see how
many tracefs inodes have been created.
Add helper functions:
tracefs_alloc_inode()
tracefs_free_inode()
get_tracefs()
Link: https://lkml.kernel.org/r/1690568452-46553-3-git-send-email-akaher@vmware.com
Signed-off-by: Ajay Kaher <akaher@vmware.com>
Co-developed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Tested-by: Ching-lin Yu <chinglinyu@google.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
-----BEGIN PGP SIGNATURE-----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=BsSZ
-----END PGP SIGNATURE-----
Merge tag '6.5-rc3-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
"Four small SMB3 client fixes:
- two reconnect fixes (to address the case where non-default
iocharset gets incorrectly overridden at reconnect with the
default charset)
- fix for NTLMSSP_AUTH request setting a flag incorrectly)
- Add missing check for invalid tlink (tree connection) in ioctl"
* tag '6.5-rc3-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: add missing return value check for cifs_sb_tlink
smb3: do not set NTLMSSP_VERSION flag for negotiate not auth request
cifs: fix charset issue in reconnection
fs/nls: make load_nls() take a const parameter
Commit a2225d931f ("autofs: remove left-over autofs4 stubs")
promised the removal of the fs/autofs/Kconfig fragment for AUTOFS4_FS
within a couple of releases, but five years later this still has not
happened yet, and AUTOFS4_FS is still enabled in 63 defconfigs.
Get rid of it mechanically:
git grep -l CONFIG_AUTOFS4_FS -- '*defconfig' |
xargs sed -i 's/AUTOFS4_FS/AUTOFS_FS/'
Also just remove the AUTOFS4_FS config option stub. Anybody who hasn't
regenerated their config file in the last five years will need to just
get the new name right when they do.
Signed-off-by: Sven Joachim <svenjoac@gmx.de>
Acked-by: Ian Kent <raven@themaw.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
or aren't considered serious enough to justify backporting.
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZMRGzwAKCRDdBJ7gKXxA
jtWoAQDqD5yton3O/tPcCC2X7QbV5bsgghIqvQFo5yWvuiJdNwEAkKwLnXISAadg
RmVCgsfQ+4CCsJgp7RpPlMS43m2AQgI=
=Rib2
-----END PGP SIGNATURE-----
Merge tag 'mm-hotfixes-stable-2023-07-28-15-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull hotfixes from Andrew Morton:
"11 hotfixes. Five are cc:stable and the remainder address post-6.4
issues or aren't considered serious enough to justify backporting"
* tag 'mm-hotfixes-stable-2023-07-28-15-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mm/memory-failure: fix hardware poison check in unpoison_memory()
proc/vmcore: fix signedness bug in read_from_oldmem()
mailmap: update remaining active codeaurora.org email addresses
mm: lock VMA in dup_anon_vma() before setting ->anon_vma
mm: fix memory ordering for mm_lock_seq and vm_lock_seq
scripts/spelling.txt: remove 'thead' as a typo
mm/pagewalk: fix EFI_PGT_DUMP of espfix area
shmem: minor fixes to splice-read implementation
tmpfs: fix Documentation of noswap and huge mount options
Revert "um: Use swap() to make code cleaner"
mm/damon/core-test: initialise context before test in damon_test_set_attrs()
blocklisting (fencing) with a couple of prerequisites and a fixup to
prevent metrics from being sent to the MDS even just once after that
has been disabled by the user. All marked for stable.
-----BEGIN PGP SIGNATURE-----
iQFHBAABCAAxFiEEydHwtzie9C7TfviiSn/eOAIR84sFAmTD7MgTHGlkcnlvbW92
QGdtYWlsLmNvbQAKCRBKf944AhHzi3SBB/4nHdfSQwy0z2+PM766sUKxSlmaRw8X
4AJyGAIGj5BnHHhtluwLpEYfrh3wfyCRaNYgS64jdsudbUBxPKIIWn2lEFxtyWbC
w0R2uEc+NGJLJOYfJ+lBP06Q2r6qk7N6OGNy6qLaN+v6xJ8WPw7H3fJBLVhnPgMq
7lkACRN+0P5Xt6ZJ57kbWWiFQ+vjv7bbDa0P9zMl6uCgoYsIpvrskqygx+gHbdsq
IcnpsHu3F0ycYAJT5eJ5GcCcThvwbNjWdbJy1fERah7U/LNcX/S3To9V5LPmydOQ
tYAWMlC/1a99fr+jTYF0Pu5GLUdK0UMKeX04ZN3SKON4pORurpypw3n8
=rw72
-----END PGP SIGNATURE-----
Merge tag 'ceph-for-6.5-rc4' of https://github.com/ceph/ceph-client
Pull ceph fixes from Ilya Dryomov:
"A patch to reduce the potential for erroneous RBD exclusive lock
blocklisting (fencing) with a couple of prerequisites and a fixup to
prevent metrics from being sent to the MDS even just once after that
has been disabled by the user. All marked for stable"
* tag 'ceph-for-6.5-rc4' of https://github.com/ceph/ceph-client:
rbd: retrieve and check lock owner twice before blocklisting
rbd: harden get_lock_owner_info() a bit
rbd: make get_lock_owner_info() return a single locker or NULL
ceph: never send metrics if disable_send_metrics is set
Most of these clean up warnings we've gotten out of compilation tools, but
several of them were from inspection while hunting down a couple of
regressions.
The most important one to pull is 75b396821c
(fs/9p: remove unnecessary and overrestrictive check)
which caused a regression for some folks by restricting mmap
in any case where writeback caches weren't enabled.
Most of the other bugs caught via inspection were type mismatches.
Signed-off-by: Eric Van Hensbergen <ericvh@kernel.org>
-----BEGIN PGP SIGNATURE-----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=TAC1
-----END PGP SIGNATURE-----
Merge tag '9p-fixes-6.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs
Pull 9p fixes from Eric Van Hensbergen:
"Misc set of fixes for 9p.
Most of these clean up warnings we've gotten out of compilation tools,
but several of them were from inspection while hunting down a couple
of regressions.
The most important one is 75b396821c ("fs/9p: remove unnecessary and
overrestrictive check") which caused a regression for some folks by
restricting mmap in any case where writeback caches weren't enabled.
Most of the other bugs caught via inspection were type mismatches"
* tag '9p-fixes-6.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
fs/9p: Remove unused extern declaration
9p: remove dead stores (variable set again without being read)
9p: virtio: skip incrementing unused variable
9p: virtio: make sure 'offs' is initialized in zc_request
9p: virtio: fix unlikely null pointer deref in handle_rerror
9p: fix ignored return value in v9fs_dir_release
fs/9p: remove unnecessary invalidate_inode_pages2
fs/9p: fix type mismatch in file cache mode helper
fs/9p: fix typo in comparison logic for cache mode
fs/9p: remove unnecessary and overrestrictive check
fs/9p: Fix a datatype used with V9FS_DIRECT_IO
The bug is the error handling:
if (tmp < nr_bytes) {
"tmp" can hold negative error codes but because "nr_bytes" is type size_t
the negative error codes are treated as very high positive values
(success). Fix this by changing "nr_bytes" to type ssize_t. The
"nr_bytes" variable is used to store values between 1 and PAGE_SIZE and
they can fit in ssize_t without any issue.
Link: https://lkml.kernel.org/r/b55f7eed-1c65-4adc-95d1-6c7c65a54a6e@moroto.mountain
Fixes: 5d8de293c2 ("vmcore: convert copy_oldmem_page() to take an iov_iter")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Baoquan He <bhe@redhat.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
-----BEGIN PGP SIGNATURE-----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=Y/po
-----END PGP SIGNATURE-----
Merge tag 'for-6.5-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- fix accounting of global block reserve size when block group tree is
enabled
- the async discard has been enabled in 6.2 unconditionally, but for
zoned mode it does not make that much sense to do it asynchronously
as the zones are reset as needed
- error handling and proper error value propagation fixes
* tag 'for-6.5-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: check for commit error at btrfs_attach_transaction_barrier()
btrfs: check if the transaction was aborted at btrfs_wait_for_commit()
btrfs: remove BUG_ON()'s in add_new_free_space()
btrfs: account block group tree when calculating global reserve size
btrfs: zoned: do not enable async discard
LTP sendfile07 [1], which expects sendfile() to return EAGAIN when
transferring data from regular file to a "full" O_NONBLOCK socket,
started failing after commit 2dc334f1a6 ("splice, net: Use
sendmsg(MSG_SPLICE_PAGES) rather than ->sendpage()").
sendfile() no longer immediately returns, but now blocks.
Removed sock_sendpage() handled this case by setting a MSG_DONTWAIT
flag, fix new splice_to_socket() to do the same for O_NONBLOCK sockets.
[1] https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/syscalls/sendfile/sendfile07.c
Fixes: 2dc334f1a6 ("splice, net: Use sendmsg(MSG_SPLICE_PAGES) rather than ->sendpage()")
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Jan Stancek <jstancek@redhat.com>
Tested-by: Xi Ruoyao <xry111@xry111.site>
Link: https://lore.kernel.org/r/023c0e21e595e00b93903a813bc0bfb9a5d7e368.1690219914.git.jstancek@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Whenever a tlink is obtained by cifs_sb_tlink, we need
to check that the tlink returned is not an error.
It was missing with the last change here.
Fixes: b3edef6b9c ("cifs: allow dumping keys for directories too")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
-----BEGIN PGP SIGNATURE-----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=bVyX
-----END PGP SIGNATURE-----
Merge tag '6.5-rc3-ksmbd-server-fixes' of git://git.samba.org/ksmbd
Pull ksmbd server fixes from Steve French:
- fixes for two possible out of bounds access (in negotiate, and in
decrypt msg)
- fix unsigned compared to zero warning
- fix path lookup crossing a mountpoint
- fix case when first compound request is a tree connect
- fix memory leak if reads are compounded
* tag '6.5-rc3-ksmbd-server-fixes' of git://git.samba.org/ksmbd:
ksmbd: fix out of bounds in init_smb2_rsp_hdr()
ksmbd: no response from compound read
ksmbd: validate session id and tree id in compound request
ksmbd: fix out of bounds in smb3_decrypt_req()
ksmbd: check if a mount point is crossed during path lookup
ksmbd: Fix unsigned expression compared with zero
btrfs_attach_transaction_barrier() is used to get a handle pointing to the
current running transaction if the transaction has not started its commit
yet (its state is < TRANS_STATE_COMMIT_START). If the transaction commit
has started, then we wait for the transaction to commit and finish before
returning - however we completely ignore if the transaction was aborted
due to some error during its commit, we simply return ERR_PT(-ENOENT),
which makes the caller assume everything is fine and no errors happened.
This could make an fsync return success (0) to user space when in fact we
had a transaction abort and the target inode changes were therefore not
persisted.
Fix this by checking for the return value from btrfs_wait_for_commit(),
and if it returned an error, return it back to the caller.
Fixes: d4edf39bd5 ("Btrfs: fix uncompleted transaction")
CC: stable@vger.kernel.org # 4.19+
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Commit db1d1e8b98 ("IMA: use vfs_getattr_nosec to get the i_version")
partially closed an IMA integrity issue when directly modifying a file
on the lower filesystem. If the overlay file is first opened by a user
and later the lower backing file is modified by root, but the extended
attribute is NOT updated, the signature validation succeeds with the old
original signature.
Update the super_block s_iflags to SB_I_IMA_UNVERIFIABLE_SIGNATURE to
force signature reevaluation on every file access until a fine grained
solution can be found.
Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The NTLMSSP_NEGOTIATE_VERSION flag only needs to be sent during
the NTLMSSP NEGOTIATE (not the AUTH) request, so filter it out for
NTLMSSP AUTH requests. See MS-NLMP 2.2.1.3
This fixes a problem found by the gssntlmssp server.
Link: https://github.com/gssapi/gss-ntlmssp/issues/95
Fixes: 52d005337b ("smb3: send NTLMSSP version information")
Acked-by: Roy Shterman <roy.shterman@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
We need to specify charset, like "iocharset=utf-8", in mount options for
Chinese path if the nls_default don't support it, such as iso8859-1, the
default value for CONFIG_NLS_DEFAULT.
But now in reconnection the nls_default is used, instead of the one we
specified and used in mount, and this can lead to mount failure.
Signed-off-by: Winston Wen <wentao@uniontech.com>
Reviewed-by: Paulo Alcantara <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
load_nls() take a char * parameter, use it to find nls module in list or
construct the module name to load it.
This change make load_nls() take a const parameter, so we don't need do
some cast like this:
ses->local_nls = load_nls((char *)ctx->local_nls->charset);
Suggested-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Winston Wen <wentao@uniontech.com>
Reviewed-by: Paulo Alcantara <pc@manguebit.com>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
The pidfd_getfd() system call allows a caller with ptrace_may_access()
abilities on another process to steal a file descriptor from this
process. This system call is used by debuggers, container runtimes,
system call supervisors, networking proxies etc. So while it is a
special interest system call it is used in common tools.
That ability ends up breaking our long-time optimization in fdget_pos(),
which "knew" that if we had exclusive access to the file descriptor
nobody else could access it, and we didn't need the lock for the file
position.
That check for file_count(file) was always fairly subtle - it depended
on __fdget() not incrementing the file count for single-threaded
processes and thus included that as part of the rule - but it did mean
that we didn't need to take the lock in all those traditional unix
process contexts.
So it's sad to see this go, and I'd love to have some way to re-instate
the optimization. At the same time, the lock obviously isn't ever
contended in the case we optimized, so all we were optimizing away is
the atomics and the cacheline dirtying. Let's see if anybody even
notices that the optimization is gone.
Link: https://lore.kernel.org/linux-fsdevel/20230724-vfs-fdget_pos-v1-1-a4abfd7103f3@kernel.org/
Fixes: 8649c322f7 ("pid: Implement pidfd_getfd syscall")
Cc: stable@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
At btrfs_wait_for_commit() we wait for a transaction to finish and then
always return 0 (success) without checking if it was aborted, in which
case the transaction didn't happen due to some critical error. Fix this
by checking if the transaction was aborted.
Fixes: 462045928b ("Btrfs: add START_SYNC, WAIT_SYNC ioctls")
CC: stable@vger.kernel.org # 4.19+
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
At add_new_free_space() we have these BUG_ON()'s that are there to deal
with any failure to add free space to the in memory free space cache.
Such failures are mostly -ENOMEM that should be very rare. However there's
no need to have these BUG_ON()'s, we can just return any error to the
caller and all callers and their upper call chain are already dealing with
errors.
So just make add_new_free_space() return any errors, while removing the
BUG_ON()'s, and returning the total amount of added free space to an
optional u64 pointer argument.
Reported-by: syzbot+3ba856e07b7127889d8c@syzkaller.appspotmail.com
Link: https://lore.kernel.org/linux-btrfs/000000000000e9cb8305ff4e8327@google.com/
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Even the 'disable_send_metrics' is true so when the session is
being opened it will always trigger to send the metric for the
first time.
Cc: stable@vger.kernel.org
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Venky Shankar <vshankar@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
checkpoint code.
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAmS9HHIACgkQ8vlZVpUN
gaNg/wf8DAf9PMn2bmQ309Acs5E8Qi1bga/ofNnoBcDNC7k+iKGAGgwOnCn+ity4
32KiA5Yh7tzoYvZHUTE5k297mN+4AX4DyAREh1cVITohRxm3BpXYZzezdLSieS8b
7RAdOinaWzs0dBjwNqkKVrTL3jduD704DnefrtHFvwqzBf/QSVSaACoPACqCFyxx
TFvutv2h5ifjS7fsjKXrXjHUAYMJCYzJNOcTW1OUb8rknUhCaKyoCkFht4PawuVx
h1wTkP87RW/bTgHA7Kqrq4BY2nLg8U0B3U/4qmW7wMjUYyAPLTUXKD3Ewj7XaFMA
UYRBr7xba8GWqyOURb3TvzrwRjqTJg==
=inak
-----END PGP SIGNATURE-----
Merge tag 'ext4_for_linus-6.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"Bug and regression fixes for 6.5-rc3 for ext4's mballoc and jbd2's
checkpoint code"
* tag 'ext4_for_linus-6.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix rbtree traversal bug in ext4_mb_use_preallocated
ext4: fix off by one issue in ext4_mb_choose_next_group_best_avail()
ext4: correct inline offset when handling xattrs in inode body
jbd2: remove __journal_try_to_free_buffer()
jbd2: fix a race when checking checkpoint buffer busy
jbd2: Fix wrongly judgement for buffer head removing while doing checkpoint
jbd2: remove journal_clean_one_cp_list()
jbd2: remove t_checkpoint_io_list
jbd2: recheck chechpointing non-dirty buffer
-----BEGIN PGP SIGNATURE-----
iQGzBAABCgAdFiEE6fsu8pdIjtWE/DpLiiy9cAdyT1EFAmS8M7gACgkQiiy9cAdy
T1HwFQv+KkynZAnDOcjOBADzR3yVoH82KMksgi7Paw8QlQYCQ+Fu3i3+WFcTKWEk
W/v2sm+F/5P8d2wjiuQKX3gzJrDQZcoyrpyhdV66abg1qursyUQitvbEEnQXwh4e
9rTFEggTD9ior2/g35QVkPvf94sMpw525cI90btT4CL2WWzM7O7+cz48JtElaLJx
NvqWc83r3Fn6kkeZn3LmwniTtNL3Cez0EOcL7SKVfOtXOlBiqxsotC6LrCJZ0Wgr
DSiNAmq71tirfe6/b1+XIbJx0Pn4f8snxvfVW2/+FOaxx0qyT7JJHgWtUNocjHLs
PESdve7fOlLYDLgQc+qfzmZrMQvsuEiGT49Zgh11Bmp55OBplIggiUjr1/gUVX2K
F/WQz6IHhsbbVQDOkqnoRYjnBWsrDcSzjy/E6twHZvllSQDalCZCNHlpdKT8jIvw
u8mbHQA92Xe0EPp/KHP+dP6OzntGNdl07qdBFc983KCHSWJxSw94tgI3Jk57alVA
tSZkv8Th
=HN3q
-----END PGP SIGNATURE-----
Merge tag '6.5-rc2-smb3-client-fixes-ver2' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fix from Steve French:
"Add minor debugging improvement.
The change improves ability to read a network trace to debug problems
on encrypted connections which are very common (e.g. using wireshark
or tcpdump).
That works today with tools like 'smbinfo keys /mnt/file' but requires
passing in a filename on the mount (see e.g. [1]), but it often makes
more sense to just pass in the mount point path (ie a directory not a
filename).
So this fix was needed to debug some types of problems (an obvious
example is on an encrypted connection failing operations on an empty
share or with no files in the root of the directory) - so you can
simply pass in the 'smbinfo keys <mntpoint>' and get the information
that wireshark needs"
Link: https://wiki.samba.org/index.php/Wireshark_Decryption [1]
* tag '6.5-rc2-smb3-client-fixes-ver2' of git://git.samba.org/sfrench/cifs-2.6:
cifs: update internal module version number for cifs.ko
cifs: allow dumping keys for directories too
If client send smb2 negotiate request and then send smb1 negotiate
request, init_smb2_rsp_hdr is called for smb1 negotiate request since
need_neg is set to false. This patch ignore smb1 packets after ->need_neg
is set to false.
Reported-by: zdi-disclosures@trendmicro.com # ZDI-CAN-21541
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
ksmbd doesn't support compound read. If client send read-read in
compound to ksmbd, there can be memory leak from read buffer.
Windows and linux clients doesn't send it to server yet. For now,
No response from compound read. compound read will be supported soon.
Reported-by: zdi-disclosures@trendmicro.com # ZDI-CAN-21587, ZDI-CAN-21588
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
`smb2_get_msg()` in smb2_get_ksmbd_tcon() and smb2_check_user_session()
will always return the first request smb2 header in a compound request.
if `SMB2_TREE_CONNECT_HE` is the first command in compound request, will
return 0, i.e. The tree id check is skipped.
This patch use ksmbd_req_buf_next() to get current command in compound.
Reported-by: zdi-disclosures@trendmicro.com # ZDI-CAN-21506
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
smb3_decrypt_req() validate if pdu_length is smaller than
smb2_transform_hdr size.
Reported-by: zdi-disclosures@trendmicro.com # ZDI-CAN-21589
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Since commit 74d7970feb ("ksmbd: fix racy issue from using ->d_parent and
->d_name"), ksmbd can not lookup cross mount points. If last component is
a cross mount point during path lookup, check if it is crossed to follow it
down. And allow path lookup to cross a mount point when a crossmnt
parameter is set to 'yes' in smb.conf.
Cc: stable@vger.kernel.org
Fixes: 74d7970feb ("ksmbd: fix racy issue from using ->d_parent and ->d_name")
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
During allocations, while looking for preallocations(PA) in the per
inode rbtree, we can't do a direct traversal of the tree because
ext4_mb_discard_group_preallocation() can paralelly mark the pa deleted
and that can cause direct traversal to skip some entries. This was
leading to a BUG_ON() being hit [1] when we missed a PA that could satisfy
our request and ultimately tried to create a new PA that would overlap
with the missed one.
To makes sure we handle that case while still keeping the performance of
the rbtree, we make use of the fact that the only pa that could possibly
overlap the original goal start is the one that satisfies the below
conditions:
1. It must have it's logical start immediately to the left of
(ie less than) original logical start.
2. It must not be deleted
To find this pa we use the following traversal method:
1. Descend into the rbtree normally to find the immediate neighboring
PA. Here we keep descending irrespective of if the PA is deleted or if
it overlaps with our request etc. The goal is to find an immediately
adjacent PA.
2. If the found PA is on right of original goal, use rb_prev() to find
the left adjacent PA.
3. Check if this PA is deleted and keep moving left with rb_prev() until
a non deleted PA is found.
4. This is the PA we are looking for. Now we can check if it can satisfy
the original request and proceed accordingly.
This approach also takes care of having deleted PAs in the tree.
(While we are at it, also fix a possible overflow bug in calculating the
end of a PA)
[1] https://lore.kernel.org/linux-ext4/CA+G9fYv2FRpLqBZf34ZinR8bU2_ZRAUOjKAD3+tKRFaEQHtt8Q@mail.gmail.com/
Cc: stable@kernel.org # 6.4
Fixes: 3872778664 ("ext4: Use rbtrees to manage PAs instead of inode i_prealloc_list")
Signed-off-by: Ojaswin Mujoo <ojaswin@linux.ibm.com>
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Reviewed-by: Ritesh Harjani (IBM) ritesh.list@gmail.com
Tested-by: Ritesh Harjani (IBM) ritesh.list@gmail.com
Link: https://lore.kernel.org/r/edd2efda6a83e6343c5ace9deea44813e71dbe20.1690045963.git.ojaswin@linux.ibm.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
In ext4_mb_choose_next_group_best_avail(), we want the start order to be
1 less than goal length and the min_order to be, at max, 1 more than the
original length. This commit fixes an off by one issue that arose due to
the fact that 1 << fls(n) > (n).
After all the processing:
order = 1 order below goal len
min_order = maximum of the three:-
- order - trim_order
- 1 order below B2C(s_stripe)
- 1 order above original len
Cc: stable@kernel.org
Fixes: 33122aa930 ("ext4: Add allocation criteria 1.5 (CR1_5)")
Signed-off-by: Ojaswin Mujoo <ojaswin@linux.ibm.com>
Link: https://lore.kernel.org/r/20230609103403.112807-1-ojaswin@linux.ibm.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
When run on a file system where the inline_data feature has been
enabled, xfstests generic/269, generic/270, and generic/476 cause ext4
to emit error messages indicating that inline directory entries are
corrupted. This occurs because the inline offset used to locate
inline directory entries in the inode body is not updated when an
xattr in that shared region is deleted and the region is shifted in
memory to recover the space it occupied. If the deleted xattr precedes
the system.data attribute, which points to the inline directory entries,
that attribute will be moved further up in the region. The inline
offset continues to point to whatever is located in system.data's former
location, with unfortunate effects when used to access directory entries
or (presumably) inline data in the inode body.
Cc: stable@kernel.org
Signed-off-by: Eric Whitney <enwlinux@gmail.com>
Link: https://lore.kernel.org/r/20230522181520.1570360-1-enwlinux@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Dumping the enc/dec keys is a session wide operation.
And it should not matter if the ioctl was run on
a regular file or a directory.
Currently, we obtain the tcon pointer from the
cifs file handle. But since there's no dir open call
in cifs, this is not populated for dirs.
This change allows dumping of session keys using ioctl
even for directories. To do this, we'll now get the
tcon pointer from the superblock, and not from the file
handle.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
commit bd238fb431 ("9p: Reorganization of 9p file system code")
left behind this.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Christian Schoenebeck <linux_oss@crudebyte.com>
Signed-off-by: Eric Van Hensbergen <ericvh@kernel.org>
The 9p code for some reason used to initialize variables outside of the
declaration, e.g. instead of just initializing the variable like this:
int retval = 0
We would be doing this:
int retval;
retval = 0;
This is perfectly fine and the compiler will just optimize dead stores
anyway, but scan-build seems to think this is a problem and there are
many of these warnings making the output of scan-build full of such
warnings:
fs/9p/vfs_inode.c:916:2: warning: Value stored to 'retval' is never read [deadcode.DeadStores]
retval = 0;
^ ~
I have no strong opinion here, but if we want to regularly run
scan-build we should fix these just to silence the messages.
I've confirmed these all are indeed ok to remove.
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Signed-off-by: Eric Van Hensbergen <ericvh@kernel.org>
retval from filemap_fdatawrite was immediately overwritten by the
following p9_fid_put: preserve any error in fdatawrite if there
was any first.
This fixes the following scan-build warning:
fs/9p/vfs_dir.c:220:4: warning: Value stored to 'retval' is never read [deadcode.DeadStores]
retval = filemap_fdatawrite(inode->i_mapping);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Fixes: 89c58cb395 ("fs/9p: fix error reporting in v9fs_dir_release")
Cc: stable@vger.kernel.org
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Signed-off-by: Eric Van Hensbergen <ericvh@kernel.org>
When using the block group tree feature, this tree is a critical tree just
like the extent, csum and free space trees, and just like them it uses the
delayed refs block reserve.
So take into account the block group tree, and its current size, when
calculating the size for the global reserve.
CC: stable@vger.kernel.org # 6.1+
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
The zoned mode need to reset a zone before using it. We rely on btrfs's
original discard functionality (discarding unused block group range) to do
the resetting.
While the commit 63a7cb1307 ("btrfs: auto enable discard=async when
possible") made the discard done in an async manner, a zoned reset do not
need to be async, as it is fast enough.
Even worth, delaying zone rests prevents using those zones again. So, let's
disable async discard on the zoned mode.
Fixes: 63a7cb1307 ("btrfs: auto enable discard=async when possible")
CC: stable@vger.kernel.org # 6.3+
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ update message text ]
Signed-off-by: David Sterba <dsterba@suse.com>
* Fix a bug wherein a failed write could clobber short write status.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQQ2qTKExjcn+O1o2YRKO3ySh0YRpgUCZLVjtwAKCRBKO3ySh0YR
pjuyAQCzUYzZEzAMz7xNBrpvNc7bSgBo6ktEidiBYH0UVcRh8AEA8oURNOBXFl8l
QyqdkM43eIBx4ovwLYZwGk0snNW2KAk=
=MDl3
-----END PGP SIGNATURE-----
Merge tag 'iomap-6.5-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull iomap fix from Darrick Wong:
"Fix partial write regression.
It turns out that fstests doesn't have any test coverage for short
writes, but LTP does. Fortunately, this was caught right after -rc1
was tagged.
Summary:
- Fix a bug wherein a failed write could clobber short write status"
* tag 'iomap-6.5-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
iomap: micro optimize the ki_pos assignment in iomap_file_buffered_write
iomap: fix a regression for partial write errors
* Convert all the array[1] declarations into the accepted flex array[]
declarations so that UBSAN and friends will not get confused.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQQ2qTKExjcn+O1o2YRKO3ySh0YRpgUCZLVpLAAKCRBKO3ySh0YR
pqVmAQDfWBiCir9goUuuz0bngUBy6PeHP9b9zIfVy1WPBDj2ZwEAyIzIhjqs7u41
ShaaMWDhI8kubvrG0+ELe+dwkxe/8Qc=
=L6u/
-----END PGP SIGNATURE-----
Merge tag 'xfs-6.5-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
"Flexarray declaration conversions.
This probably should've been done with the merge window open, but I
was not aware that the UBSAN knob would be getting turned up for 6.5,
and the fstests failures due to the kernel warnings are getting in the
way of testing.
Summary:
- Convert all the array[1] declarations into the accepted flex
array[] declarations so that UBSAN and friends will not get
confused"
* tag 'xfs-6.5-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: convert flex-array declarations in xfs attr shortform objects
xfs: convert flex-array declarations in xfs attr leaf blocks
xfs: convert flex-array declarations in struct xfs_attrlist*
There was an invalidate_inode_pages2 added to readonly mmap path
that is unnecessary since that path is only entered when writeback
cache is disabled on mount.
Cc: stable@vger.kernel.org
Fixes: 1543b4c507 ("fs/9p: remove writeback fid and fix per-file modes")
Reviewed-by: Christian Schoenebeck <linux_oss@crudebyte.com>
Signed-off-by: Eric Van Hensbergen <ericvh@kernel.org>
