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Even though it seems to be able to resolve some names of
case-insensitive directories, the lack of d_hash and d_compare means we
end up with a broken state in the d_cache. Considering it was never a
goal to support these two together, and we are preparing to use
d_revalidate in case-insensitive filesystems, which would make the
combination even more broken, reject any attempt to get a casefolded
inode from ecryptfs.
Signed-off-by: Gabriel Krisman Bertazi <krisman@suse.de>
Reviewed-by: Eric Biggers <ebiggers@google.com>
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Merge tag '6.7-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
- ctime caching fix (for setxattr)
- encryption fix
- DNS resolver mount fix
- debugging improvements
- multichannel fixes including cases where server stops or starts
supporting multichannel after mount
- reconnect fix
- minor cleanups
* tag '6.7-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
cifs: update internal module version number for cifs.ko
cifs: handle when server stops supporting multichannel
cifs: handle when server starts supporting multichannel
Missing field not being returned in ioctl CIFS_IOC_GET_MNT_INFO
smb3: allow dumping session and tcon id to improve stats analysis and debugging
smb: client: fix mount when dns_resolver key is not available
smb3: fix caching of ctime on setxattr
smb3: minor cleanup of session handling code
cifs: reconnect work should have reference on server struct
cifs: do not pass cifs_sb when trying to add channels
cifs: account for primary channel in the interface list
cifs: distribute channels across interfaces based on speed
cifs: handle cases where a channel is closed
smb3: more minor cleanups for session handling routines
smb3: minor RDMA cleanup
cifs: Fix encryption of cleared, but unset rq_iter data buffers
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Merge tag '6.7-rc-smb3-server-part2' of git://git.samba.org/ksmbd
Pull smb server fixes from Steve French:
- slab out of bounds fix in ACL handling
- fix malformed request oops
- minor doc fix
* tag '6.7-rc-smb3-server-part2' of git://git.samba.org/ksmbd:
ksmbd: handle malformed smb1 message
ksmbd: fix kernel-doc comment of ksmbd_vfs_kern_path_locked()
ksmbd: fix slab out of bounds write in smb_inherit_dacl()
- support for idmapped mounts in CephFS (Christian Brauner, Alexander
Mikhalitsyn). The series was originally developed by Christian and
later picked up and brought over the finish line by Alexander, who
also contributed an enabler on the MDS side (separate owner_{u,g}id
fields on the wire). The required exports for mnt_idmap_{get,put}()
in VFS have been acked by Christian and received no objection from
Christoph.
- a churny change in CephFS logging to include cluster and client
identifiers in log and debug messages (Xiubo Li). This would help
in scenarios with dozens of CephFS mounts on the same node which are
getting increasingly common, especially in the Kubernetes world.
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Merge tag 'ceph-for-6.7-rc1' of https://github.com/ceph/ceph-client
Pull ceph updates from Ilya Dryomov:
- support for idmapped mounts in CephFS (Christian Brauner, Alexander
Mikhalitsyn).
The series was originally developed by Christian and later picked up
and brought over the finish line by Alexander, who also contributed
an enabler on the MDS side (separate owner_{u,g}id fields on the
wire).
The required exports for mnt_idmap_{get,put}() in VFS have been acked
by Christian and received no objection from Christoph.
- a churny change in CephFS logging to include cluster and client
identifiers in log and debug messages (Xiubo Li).
This would help in scenarios with dozens of CephFS mounts on the same
node which are getting increasingly common, especially in the
Kubernetes world.
* tag 'ceph-for-6.7-rc1' of https://github.com/ceph/ceph-client:
ceph: allow idmapped mounts
ceph: allow idmapped atomic_open inode op
ceph: allow idmapped set_acl inode op
ceph: allow idmapped setattr inode op
ceph: pass idmap to __ceph_setattr
ceph: allow idmapped permission inode op
ceph: allow idmapped getattr inode op
ceph: pass an idmapping to mknod/symlink/mkdir
ceph: add enable_unsafe_idmap module parameter
ceph: handle idmapped mounts in create_request_message()
ceph: stash idmapping in mdsc request
fs: export mnt_idmap_get/mnt_idmap_put
libceph, ceph: move mdsmap.h to fs/ceph
ceph: print cluster fsid and client global_id in all debug logs
ceph: rename _to_client() to _to_fs_client()
ceph: pass the mdsc to several helpers
libceph: add doutc and *_client debug macros support
When a server stops supporting multichannel, we will
keep attempting reconnects to the secondary channels today.
Avoid this by freeing extra channels when negotiate
returns no multichannel support.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
When the user mounts with multichannel option, but the
server does not support it, there can be a time in future
where it can be supported.
With this change, such a case is handled.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
The tcon_flags field was always being set to zero in the information
about the mount returned by the ioctl CIFS_IOC_GET_MNT_INFO instead
of being set to the value of the Flags field in the tree connection
structure as intended.
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
When multiple mounts are to the same share from the same client it was not
possible to determine which section of /proc/fs/cifs/Stats (and DebugData)
correspond to that mount. In some recent examples this turned out to be
a significant problem when trying to analyze performance data - since
there are many cases where unless we know the tree id and session id we
can't figure out which stats (e.g. number of SMB3.1.1 requests by type,
the total time they take, which is slowest, how many fail etc.) apply to
which mount. The only existing loosely related ioctl CIFS_IOC_GET_MNT_INFO
does not return the information needed to uniquely identify which tcon
is which mount although it does return various flags and device info.
Add a cifs.ko ioctl CIFS_IOC_GET_TCON_INFO (0x800ccf0c) to return tid,
session id, tree connect count.
Cc: stable@vger.kernel.org
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
There was a wrong assumption that with CONFIG_CIFS_DFS_UPCALL=y there
would always be a dns_resolver key set up so we could unconditionally
upcall to resolve UNC hostname rather than using the value provided by
mount(2).
Only require it when performing automount of junctions within a DFS
share so users that don't have dns_resolver key still can mount their
regular shares with server hostname resolved by mount.cifs(8).
Fixes: 348a04a8d1 ("smb: client: get rid of dfs code dep in namespace.c")
Cc: stable@vger.kernel.org
Tested-by: Eduard Bachmakov <e.bachmakov@gmail.com>
Reported-by: Eduard Bachmakov <e.bachmakov@gmail.com>
Closes: https://lore.kernel.org/all/CADCRUiNvZuiUZ0VGZZO9HRyPyw6x92kiA7o7Q4tsX5FkZqUkKg@mail.gmail.com/
Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Fixes xfstest generic/728 which had been failing due to incorrect
ctime after setxattr and removexattr
Update ctime on successful set of xattr
Cc: stable@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
Minor cleanup of style issues found by checkpatch
Reviewed-by: Bharath SM <bharathsm@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
The delayed work for reconnect takes server struct
as a parameter. But it does so without holding a ref
to it. Normally, this may not show a problem as
the reconnect work is only cancelled on umount.
However, since we now plan to support scaling down of
channels, and the scale down can happen from reconnect
work itself, we need to fix it.
This change takes a reference on the server struct
before it is passed to the delayed work. And drops
the reference in the delayed work itself. Or if
the delayed work is successfully cancelled, by the
process that cancels it.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
The only reason why cifs_sb gets passed today to cifs_try_adding_channels
is to pass the local_nls field for the new channels and binding session.
However, the ses struct already has local_nls field that is setup during
the first cifs_setup_session. So there is no need to pass cifs_sb.
This change removes cifs_sb from the arg list for this and the functions
that it calls and uses ses->local_nls instead.
Cc: stable@vger.kernel.org
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
The refcounting of server interfaces should account
for the primary channel too. Although this is not
strictly necessary, doing so will account for the primary
channel in DebugData.
Cc: stable@vger.kernel.org
Reviewed-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Today, if the server interfaces RSS capable, we simply
choose the fastest interface to setup a channel. This is not
a scalable approach, and does not make a lot of attempt to
distribute the connections.
This change does a weighted distribution of channels across
all the available server interfaces, where the weight is
a function of the advertised interface speed.
Also make sure that we don't mix rdma and non-rdma for channels.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
So far, SMB multichannel could only scale up, but not
scale down the number of channels. In this series of
patch, we now allow the client to deal with the case
of multichannel disabled on the server when the share
is mounted. With that change, we now need the ability
to scale down the channels.
This change allows the client to deal with cases of
missing channels more gracefully.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Some minor smbdirect debug cleanup spotted by checkpatch
Cc: Long Li <longli@microsoft.com>
Reviewed-by: Bharath SM <bharathsm@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Highlights include:
Bugfixes:
- SUNRPC: A fix to re-probe the target RPC port after an ECONNRESET error
- SUNRPC: Handle allocation errors from rpcb_call_async()
- SUNRPC: Fix a use-after-free condition in rpc_pipefs
- SUNRPC: fix up various checks for timeouts
- NFSv4.1: Handle NFS4ERR_DELAY errors during session trunking
- NFSv4.1: fix SP4_MACH_CRED protection for pnfs IO
- NFSv4: Ensure that we test all delegations when the server notifies
us that it may have revoked some of them
Features:
- Allow knfsd processes to break out of NFS4ERR_DELAY loops when
re-exporting NFSv4.x by setting appropriate values for the
'delay_retrans' module parameter.
- nfs: Convert nfs_symlink() to use a folio
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Merge tag 'nfs-for-6.7-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Bugfixes:
- SUNRPC:
- re-probe the target RPC port after an ECONNRESET error
- handle allocation errors from rpcb_call_async()
- fix a use-after-free condition in rpc_pipefs
- fix up various checks for timeouts
- NFSv4.1:
- Handle NFS4ERR_DELAY errors during session trunking
- fix SP4_MACH_CRED protection for pnfs IO
- NFSv4:
- Ensure that we test all delegations when the server notifies
us that it may have revoked some of them
Features:
- Allow knfsd processes to break out of NFS4ERR_DELAY loops when
re-exporting NFSv4.x by setting appropriate values for the
'delay_retrans' module parameter
- nfs: Convert nfs_symlink() to use a folio"
* tag 'nfs-for-6.7-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
nfs: Convert nfs_symlink() to use a folio
SUNRPC: Fix RPC client cleaned up the freed pipefs dentries
NFSv4.1: fix SP4_MACH_CRED protection for pnfs IO
SUNRPC: Add an IS_ERR() check back to where it was
NFSv4.1: fix handling NFS4ERR_DELAY when testing for session trunking
nfs41: drop dependency between flexfiles layout driver and NFSv3 modules
NFSv4: fairly test all delegations on a SEQ4_ revocation
SUNRPC: SOFTCONN tasks should time out when on the sending list
SUNRPC: Force close the socket when a hard error is reported
SUNRPC: Don't skip timeout checks in call_connect_status()
SUNRPC: ECONNRESET might require a rebind
NFSv4/pnfs: Allow layoutget to return EAGAIN for softerr mounts
NFSv4: Add a parameter to limit the number of retries after NFS4ERR_DELAY
- Fix an issue that exfat timestamps are not updated caused by
new timestamp accessor function patch.
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Merge tag 'exfat-for-6.7-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat
Pull exfat updates from Namjae Jeon:
- Fix an issue that exfat timestamps are not updated caused by new
timestamp accessor function patch
* tag 'exfat-for-6.7-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat:
exfat: fix ctime is not updated
exfat: fix setting uninitialized time to ctime/atime
* Realtime device subsystem
- Cleanup usage of xfs_rtblock_t and xfs_fsblock_t data types.
- Replace open coded conversions between rt blocks and rt extents with
calls to static inline helpers.
- Replace open coded realtime geometry compuation and macros with helper
functions.
- CPU usage optimizations for realtime allocator.
- Misc. Bug fixes associated with Realtime device.
* Allow read operations to execute while an FICLONE ioctl is being serviced.
* Misc. bug fixes
- Alert user when xfs_droplink() encounters an inode with a link count of zero.
- Handle the case where the allocator could return zero extents when
servicing an fallocate request.
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
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Merge tag 'xfs-6.7-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs updates from Chandan Babu:
- Realtime device subsystem:
- Cleanup usage of xfs_rtblock_t and xfs_fsblock_t data types
- Replace open coded conversions between rt blocks and rt extents
with calls to static inline helpers
- Replace open coded realtime geometry compuation and macros with
helper functions
- CPU usage optimizations for realtime allocator
- Misc bug fixes associated with Realtime device
- Allow read operations to execute while an FICLONE ioctl is being
serviced
- Misc bug fixes:
- Alert user when xfs_droplink() encounters an inode with a link
count of zero
- Handle the case where the allocator could return zero extents when
servicing an fallocate request
* tag 'xfs-6.7-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (40 commits)
xfs: allow read IO and FICLONE to run concurrently
xfs: handle nimaps=0 from xfs_bmapi_write in xfs_alloc_file_space
xfs: introduce protection for drop nlink
xfs: don't look for end of extent further than necessary in xfs_rtallocate_extent_near()
xfs: don't try redundant allocations in xfs_rtallocate_extent_near()
xfs: limit maxlen based on available space in xfs_rtallocate_extent_near()
xfs: return maximum free size from xfs_rtany_summary()
xfs: invert the realtime summary cache
xfs: simplify rt bitmap/summary block accessor functions
xfs: simplify xfs_rtbuf_get calling conventions
xfs: cache last bitmap block in realtime allocator
xfs: use accessor functions for summary info words
xfs: consolidate realtime allocation arguments
xfs: create helpers for rtsummary block/wordcount computations
xfs: use accessor functions for bitmap words
xfs: create helpers for rtbitmap block/wordcount computations
xfs: create a helper to handle logging parts of rt bitmap/summary blocks
xfs: convert rt summary macros to helpers
xfs: convert open-coded xfs_rtword_t pointer accesses to helper
xfs: remove XFS_BLOCKWSIZE and XFS_BLOCKWMASK macros
...
Each smb_rqst struct contains two things: an array of kvecs (rq_iov) that
contains the protocol data for an RPC op and an iterator (rq_iter) that
contains the data payload of an RPC op. When an smb_rqst is allocated
rq_iter is it always cleared, but we don't set it up unless we're going to
use it.
The functions that determines the size of the ciphertext buffer that will
be needed to encrypt a request, cifs_get_num_sgs(), assumes that rq_iter is
always initialised - and employs user_backed_iter() to check that the
iterator isn't user-backed. This used to incidentally work, because
->user_backed was set to false because the iterator has never been
initialised, but with commit f1b4cb650b9a0eeba206d8f069fcdc532bfbcd74[1]
which changes user_backed_iter() to determine this based on the iterator
type insted, a warning is now emitted:
WARNING: CPU: 7 PID: 4584 at fs/smb/client/cifsglob.h:2165 smb2_get_aead_req+0x3fc/0x420 [cifs]
...
RIP: 0010:smb2_get_aead_req+0x3fc/0x420 [cifs]
...
crypt_message+0x33e/0x550 [cifs]
smb3_init_transform_rq+0x27d/0x3f0 [cifs]
smb_send_rqst+0xc7/0x160 [cifs]
compound_send_recv+0x3ca/0x9f0 [cifs]
cifs_send_recv+0x25/0x30 [cifs]
SMB2_tcon+0x38a/0x820 [cifs]
cifs_get_smb_ses+0x69c/0xee0 [cifs]
cifs_mount_get_session+0x76/0x1d0 [cifs]
dfs_mount_share+0x74/0x9d0 [cifs]
cifs_mount+0x6e/0x2e0 [cifs]
cifs_smb3_do_mount+0x143/0x300 [cifs]
smb3_get_tree+0x15e/0x290 [cifs]
vfs_get_tree+0x2d/0xe0
do_new_mount+0x124/0x340
__se_sys_mount+0x143/0x1a0
The problem is that rq_iter was never set, so the type is 0 (ie. ITER_UBUF)
which causes user_backed_iter() to return true. The code doesn't
malfunction because it checks the size of the iterator - which is 0.
Fix cifs_get_num_sgs() to ignore rq_iter if its count is 0, thereby
bypassing the warnings.
It might be better to explicitly initialise rq_iter to a zero-length
ITER_BVEC, say, as it can always be reinitialised later.
Fixes: d08089f649 ("cifs: Change the I/O paths to use an iterator rather than a page list")
Reported-by: Damian Tometzki <damian@riscv-rocks.de>
Closes: https://lore.kernel.org/r/ZUfQo47uo0p2ZsYg@fedora.fritz.box/
Tested-by: Damian Tometzki <damian@riscv-rocks.de>
Cc: stable@vger.kernel.org
cc: Eric Biggers <ebiggers@kernel.org>
cc: linux-cifs@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
Link: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f1b4cb650b9a0eeba206d8f069fcdc532bfbcd74 [1]
Reviewed-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
If set_smb1_rsp_status() is not implemented, It will cause NULL pointer
dereferece error when client send malformed smb1 message.
This patch add set_smb1_rsp_status() to ignore malformed smb1 message.
Cc: stable@vger.kernel.org
Reported-by: Robert Morris <rtm@csail.mit.edu>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Fix argument list that the kdoc format and script verified in
ksmbd_vfs_kern_path_locked().
fs/smb/server/vfs.c:1207: warning: Function parameter or member 'parent_path'
not described in 'ksmbd_vfs_kern_path_locked'
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
slab out-of-bounds write is caused by that offsets is bigger than pntsd
allocation size. This patch add the check to validate 3 offsets using
allocation size.
Reported-by: zdi-disclosures@trendmicro.com # ZDI-CAN-22271
Cc: stable@vger.kernel.org
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
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Merge tag 'vfs-6.7.fsid' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fanotify fsid updates from Christian Brauner:
"This work is part of the plan to enable fanotify to serve as a drop-in
replacement for inotify. While inotify is availabe on all filesystems,
fanotify currently isn't.
In order to support fanotify on all filesystems two things are needed:
(1) all filesystems need to support AT_HANDLE_FID
(2) all filesystems need to report a non-zero f_fsid
This contains (1) and allows filesystems to encode non-decodable file
handlers for fanotify without implementing any exportfs operations by
encoding a file id of type FILEID_INO64_GEN from i_ino and
i_generation.
Filesystems that want to opt out of encoding non-decodable file ids
for fanotify that don't support NFS export can do so by providing an
empty export_operations struct.
This also partially addresses (2) by generating f_fsid for simple
filesystems as well as freevxfs. Remaining filesystems will be dealt
with by separate patches.
Finally, this contains the patch from the current exportfs maintainers
which moves exportfs under vfs with Chuck, Jeff, and Amir as
maintainers and vfs.git as tree"
* tag 'vfs-6.7.fsid' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
MAINTAINERS: create an entry for exportfs
fs: fix build error with CONFIG_EXPORTFS=m or not defined
freevxfs: derive f_fsid from bdev->bd_dev
fs: report f_fsid from s_dev for "simple" filesystems
exportfs: support encoding non-decodeable file handles by default
exportfs: define FILEID_INO64_GEN* file handle types
exportfs: make ->encode_fh() a mandatory method for NFS export
exportfs: add helpers to check if filesystem can encode/decode file handles
- Don't update inode timestamps for direct writes (performance regression fix).
- Skip no-op quota records instead of panicing.
- Fix a RCU race in gfs2_permission().
- Various other smaller fixes and cleanups all over the place.
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Merge tag 'gfs2-v6.6-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 updates from Andreas Gruenbacher:
- Don't update inode timestamps for direct writes (performance
regression fix)
- Skip no-op quota records instead of panicing
- Fix a RCU race in gfs2_permission()
- Various other smaller fixes and cleanups all over the place
* tag 'gfs2-v6.6-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: (24 commits)
gfs2: don't withdraw if init_threads() got interrupted
gfs2: remove dead code in add_to_queue
gfs2: Fix slab-use-after-free in gfs2_qd_dealloc
gfs2: Silence "suspicious RCU usage in gfs2_permission" warning
gfs2: fs: derive f_fsid from s_uuid
gfs2: No longer use 'extern' in function declarations
gfs2: Rename gfs2_lookup_{ simple => meta }
gfs2: Convert gfs2_internal_read to folios
gfs2: Convert stuffed_readpage to folios
gfs2: Minor gfs2_write_jdata_batch PAGE_SIZE cleanup
gfs2: Get rid of gfs2_alloc_blocks generation parameter
gfs2: Add metapath_dibh helper
gfs2: Clean up quota.c:print_message
gfs2: Clean up gfs2_alloc_parms initializers
gfs2: Two quota=account mode fixes
gfs2: Stop using GFS2_BASIC_BLOCK and GFS2_BASIC_BLOCK_SHIFT
gfs2: setattr_chown: Add missing initialization
gfs2: fix an oops in gfs2_permission
gfs2: ignore negated quota changes
gfs2: Don't update inode timestamps for direct writes
...
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Merge tag 'ovl-update-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/overlayfs/vfs
Pull overlayfs updates from Amir Goldstein:
- Overlayfs aio cleanups and fixes
Cleanups and minor fixes in preparation for factoring out of
read/write passthrough code.
- Overlayfs lock ordering changes
Hold mnt_writers only throughout copy up instead of a long lived
elevated refcount.
- Add support for nesting overlayfs private xattrs
There are cases where you want to use an overlayfs mount as a
lowerdir for another overlayfs mount. For example, if the system
rootfs is on overlayfs due to composefs, or to make it volatile (via
tmpfs), then you cannot currently store a lowerdir on the rootfs,
because the inner overlayfs will eat all the whiteouts and overlay
xattrs. This means you can't e.g. store on the rootfs a prepared
container image for use with overlayfs.
This adds support for nesting of overlayfs mounts by escaping the
problematic features and unescaping them when exposing to the
overlayfs user.
- Add new mount options for appending lowerdirs
* tag 'ovl-update-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/overlayfs/vfs:
ovl: add support for appending lowerdirs one by one
ovl: refactor layer parsing helpers
ovl: store and show the user provided lowerdir mount option
ovl: remove unused code in lowerdir param parsing
ovl: Add documentation on nesting of overlayfs mounts
ovl: Add an alternative type of whiteout
ovl: Support escaped overlay.* xattrs
ovl: Add OVL_XATTR_TRUSTED/USER_PREFIX_LEN macros
ovl: Move xattr support to new xattrs.c file
ovl: do not encode lower fh with upper sb_writers held
ovl: do not open/llseek lower file with upper sb_writers held
ovl: reorder ovl_want_write() after ovl_inode_lock()
ovl: split ovl_want_write() into two helpers
ovl: add helper ovl_file_modified()
ovl: protect copying of realinode attributes to ovl inode
ovl: punt write aio completion to workqueue
ovl: propagate IOCB_APPEND flag on writes to realfile
ovl: use simpler function to convert iocb to rw flags
Here's the second big bcachefs pull request. This brings your tree up to
date with my master branch, which is what existing bcachefs users are
currently running.
All but the last few patches have been in linux-next, those being small
fixes. Test results from my dashboard:
https://evilpiepirate.org/~testdashboard/ci?commit=c7046ed0cf9bb33599aa7e72e7b67bba4be42d64
New features:
- rebalance_work btree (and metadata version 1.3): the rebalance thread
no longer has to scan to find extents that need processing - big
scalability improvement.
- sb_errors superblock section: this adds counters for each fsck error
type, since filesystem creation, along with the date of the most
recent error. It'll get us better bug reports (since users do not
typically report errors that fsck was able to fix), and I might add
telemetry for this in the future.
Fixes include:
- multiple snapshot deletion fixes
- members_v2 fixups
- deleted_inodes btree fixes
- copygc thread no longer spins when a device is full but has no
fragmented buckets (i.e. rebalance needs to move data around instead)
- a fix for a memory reclaim issue with the btree key cache: we're now
careful not to hold the srcu read lock that blocks key cache reclaim
for too long
- an early allocator locking fix, from Brian
- endianness fixes, from Brian
- CONFIG_BCACHEFS_DEBUG_TRANSACTIONS no longer defaults to y, a big
performance improvement on multithreaded workloads
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Merge tag 'bcachefs-2023-11-5' of https://evilpiepirate.org/git/bcachefs
Pull more bcachefs updates from Kent Overstreet:
"Here's the second big bcachefs pull request. This brings your tree up
to date with my master branch, which is what existing bcachefs users
are currently running.
New features:
- rebalance_work btree (and metadata version 1.3): the rebalance
thread no longer has to scan to find extents that need processing -
big scalability improvement.
- sb_errors superblock section: this adds counters for each fsck
error type, since filesystem creation, along with the date of the
most recent error. It'll get us better bug reports (since users do
not typically report errors that fsck was able to fix), and I might
add telemetry for this in the future.
Fixes include:
- multiple snapshot deletion fixes
- members_v2 fixups
- deleted_inodes btree fixes
- copygc thread no longer spins when a device is full but has no
fragmented buckets (i.e. rebalance needs to move data around
instead)
- a fix for a memory reclaim issue with the btree key cache: we're
now careful not to hold the srcu read lock that blocks key cache
reclaim for too long
- an early allocator locking fix, from Brian
- endianness fixes, from Brian
- CONFIG_BCACHEFS_DEBUG_TRANSACTIONS no longer defaults to y, a big
performance improvement on multithreaded workloads"
* tag 'bcachefs-2023-11-5' of https://evilpiepirate.org/git/bcachefs: (70 commits)
bcachefs: Improve stripe checksum error message
bcachefs: Simplify, fix bch2_backpointer_get_key()
bcachefs: kill thing_it_points_to arg to backpointer_not_found()
bcachefs: bch2_ec_read_extent() now takes btree_trans
bcachefs: bch2_stripe_to_text() now prints ptr gens
bcachefs: Don't iterate over journal entries just for btree roots
bcachefs: Break up bch2_journal_write()
bcachefs: Replace ERANGE with private error codes
bcachefs: bkey_copy() is no longer a macro
bcachefs: x-macro-ify inode flags enum
bcachefs: Convert bch2_fs_open() to darray
bcachefs: Move __bch2_members_v2_get_mut to sb-members.h
bcachefs: bch2_prt_datetime()
bcachefs: CONFIG_BCACHEFS_DEBUG_TRANSACTIONS no longer defaults to y
bcachefs: Add a comment for BTREE_INSERT_NOJOURNAL usage
bcachefs: rebalance_work btree is not a snapshots btree
bcachefs: Add missing printk newlines
bcachefs: Fix recovery when forced to use JSET_NO_FLUSH journal entry
bcachefs: .get_parent() should return an error pointer
bcachefs: Fix bch2_delete_dead_inodes()
...
In gfs2_fill_super(), when mounting a gfs2 filesystem is interrupted,
kthread_create() can return -EINTR. When that happens, we roll back
what has already been done and abort the mount.
Since commit 62dd0f98a0 ("gfs2: Flag a withdraw if init_threads()
fails), we are calling gfs2_withdraw_delayed() in gfs2_fill_super();
first via gfs2_make_fs_rw(), then directly. But gfs2_withdraw_delayed()
only marks the filesystem as withdrawing and relies on a caller further
up the stack to do the actual withdraw, which doesn't exist in the
gfs2_fill_super() case. Because the filesystem is marked as withdrawing
/ withdrawn, function gfs2_lm_unmount() doesn't release the dlm
lockspace, so when we try to mount that filesystem again, we get:
gfs2: fsid=gohan:gohan0: Trying to join cluster "lock_dlm", "gohan:gohan0"
gfs2: fsid=gohan:gohan0: dlm_new_lockspace error -17
Since commit b77b4a4815 ("gfs2: Rework freeze / thaw logic"), the
deadlock this gfs2_withdraw_delayed() call was supposed to work around
cannot occur anymore because freeze_go_callback() won't take the
sb->s_umount semaphore unconditionally anymore, so we can get rid of the
gfs2_withdraw_delayed() in gfs2_fill_super() entirely.
Reported-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Cc: stable@vger.kernel.org # v6.5+
clang static analyzer complains that value stored to 'gh' is never read.
The code of this line is useless after commit 0b93bac227
("gfs2: Remove LM_FLAG_PRIORITY flag"). Remove this code to save space.
Signed-off-by: Su Hui <suhui@nfschina.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
In gfs2_put_super(), whether withdrawn or not, the quota should
be cleaned up by gfs2_quota_cleanup().
Otherwise, struct gfs2_sbd will be freed before gfs2_qd_dealloc (rcu
callback) has run for all gfs2_quota_data objects, resulting in
use-after-free.
Also, gfs2_destroy_threads() and gfs2_quota_cleanup() is already called
by gfs2_make_fs_ro(), so in gfs2_put_super(), after calling
gfs2_make_fs_ro(), there is no need to call them again.
Reported-by: syzbot+29c47e9e51895928698c@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=29c47e9e51895928698c
Signed-off-by: Juntong Deng <juntong.deng@outlook.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Commit 0abd1557e2 added rcu_dereference() for dereferencing ip->i_gl
in gfs2_permission. This now causes lockdep to complain when
gfs2_permission is called in non-RCU context:
WARNING: suspicious RCU usage in gfs2_permission
Switch to rcu_dereference_check() and check for the MAY_NOT_BLOCK flag
to shut up lockdep when we know that dereferencing ip->i_gl is safe.
Fixes: 0abd1557e2 ("gfs2: fix an oops in gfs2_permission")
Reported-by: syzbot+3e5130844b0c0e2b4948@syzkaller.appspotmail.com
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
gfs2 already has optional persistent uuid.
Use that uuid to report f_fsid in statfs(2), same as ext2/ext4/zonefs.
This allows gfs2 to be monitored by fanotify filesystem watch.
for example, with inotify-tools 4.23.8.0, the following command can be
used to watch changes over entire filesystem:
fsnotifywatch --filesystem /mnt/gfs2
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
For non-static function declarations, external linkage is implied and
the 'extern' keyword isn't needed. Some static checkers complain about
the overuse of 'extern', so clean up all the function declarations.
In addition, remove 'extern' from the definition of
free_local_statfs_inodes(); it isn't needed there, either.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Function gfs2_lookup_simple() is used for looking up inodes in the
metadata directory tree, so rename it to gfs2_lookup_meta() to closer
match its purpose. Clean the function up a little on the way.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
In gfs2_write_jdata_batch(), to compute the number of blocks, compute
the total size of the folio batch instead of the number of pages it
contains. Not a functional change.
Note that we don't currently allow mounting filesystems with a block
size bigger than the page size. We could change that after converting
the page cache to folios. The page cache would then only contain
block-size or bigger folios, so rounding wouldn't become an issue here.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Get rid of the generation parameter of gfs2_alloc_blocks(): we only ever
set the generation of the current inode while creating it, so do so
directly.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
- UBI Fastmap improvements
- Minor issues found by static analysis bots in both UBI and UBIFS
- Fix for wrong dentry length UBIFS in fscrypt mode
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Merge tag 'ubifs-for-linus-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs
Pull UBI and UBIFS updates from Richard Weinberger:
- UBI Fastmap improvements
- Minor issues found by static analysis bots in both UBI and UBIFS
- Fix for wrong dentry length UBIFS in fscrypt mode
* tag 'ubifs-for-linus-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs:
ubifs: ubifs_link: Fix wrong name len calculating when UBIFS is encrypted
ubi: block: Fix use-after-free in ubiblock_cleanup
ubifs: fix possible dereference after free
ubi: fastmap: Add control in 'UBI_IOCATT' ioctl to reserve PEBs for filling pools
ubi: fastmap: Add module parameter to control reserving filling pool PEBs
ubi: fastmap: Fix lapsed wear leveling for first 64 PEBs
ubi: fastmap: Get wl PEB even ec beyonds the 'max' if free PEBs are run out
ubi: fastmap: may_reserve_for_fm: Don't reserve PEB if fm_anchor exists
ubi: fastmap: Remove unneeded break condition while filling pools
ubi: fastmap: Wait until there are enough free PEBs before filling pools
ubi: fastmap: Use free pebs reserved for bad block handling
ubi: Replace erase_block() with sync_erase()
ubi: fastmap: Allocate memory with GFP_NOFS in ubi_update_fastmap
ubi: fastmap: erase_block: Get erase counter from wl_entry rather than flash
ubi: fastmap: Fix missed ec updating after erasing old fastmap data block
ubifs: Fix missing error code err
ubifs: Fix memory leak of bud->log_hash
ubifs: Fix some kernel-doc comments
We now include the name of the device in the error message - and also
increment the number of checksum errors on that device.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
- backpointer_not_found() checks backpointers_no_use_write_buffer, no
need to do it inbackpointer_get_key().
- always use backpointer_get_node() for pointers to nodes:
backpointer_get_key() was sometimes returning the key from the root
node unlocked.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
We're not supposed to have more than one btree_trans at a time in a
given thread - that causes recursive locking deadlocks.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Split up bch2_journal_write() to simplify locking:
- bch2_journal_write_pick_flush(), which needs j->lock
- bch2_journal_write_prep, which operates on the journal buffer to be
written and will need the upcoming buf_lock for synchronization with
the btree write buffer flush path
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
We avoid using standard error codes: private, per-callsite error codes
make debugging easier.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
