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git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs fixes from Gao Xiang:
"Three fixes related to EROFS fscache mode. The most important two
patches fix calling kill_block_super() in bdev-based mode instead of
kill_anon_super(). The remaining patch is an informative one.
Summary:
- Better error message when prepare_ondemand_read failed
- Fix unmount of bdev-based mode if CONFIG_EROFS_FS_ONDEMAND is on"
* tag 'erofs-for-6.9-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
erofs: reliably distinguish block based and fscache mode
erofs: get rid of erofs_fs_context
erofs: modify the error message when prepare_ondemand_read failed
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Fix uninitialized symbol 'share' in smb2_tree_connect().
Fixes: e9d8c2f95ab8 ("ksmbd: add continuous availability share parameter")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
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When erofs_kill_sb() is called in block dev based mode, s_bdev may not
have been initialised yet, and if CONFIG_EROFS_FS_ONDEMAND is enabled,
it will be mistaken for fscache mode, and then attempt to free an anon_dev
that has never been allocated, triggering the following warning:
============================================
ida_free called for id=0 which is not allocated.
WARNING: CPU: 14 PID: 926 at lib/idr.c:525 ida_free+0x134/0x140
Modules linked in:
CPU: 14 PID: 926 Comm: mount Not tainted 6.9.0-rc3-dirty #630
RIP: 0010:ida_free+0x134/0x140
Call Trace:
<TASK>
erofs_kill_sb+0x81/0x90
deactivate_locked_super+0x35/0x80
get_tree_bdev+0x136/0x1e0
vfs_get_tree+0x2c/0xf0
do_new_mount+0x190/0x2f0
[...]
============================================
Now when erofs_kill_sb() is called, erofs_sb_info must have been
initialised, so use sbi->fsid to distinguish between the two modes.
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Jingbo Xu <jefflexu@linux.alibaba.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Link: https://lore.kernel.org/r/20240419123611.947084-3-libaokun1@huawei.com
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
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Instead of allocating the erofs_sb_info in fill_super() allocate it during
erofs_init_fs_context() and ensure that erofs can always have the info
available during erofs_kill_sb(). After this erofs_fs_context is no longer
needed, replace ctx with sbi, no functional changes.
Suggested-by: Jingbo Xu <jefflexu@linux.alibaba.com>
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Jingbo Xu <jefflexu@linux.alibaba.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Link: https://lore.kernel.org/r/20240419123611.947084-2-libaokun1@huawei.com
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
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When prepare_ondemand_read failed, wrong error message is printed.
The prepare_read is also implemented in cachefiles, so we amend it.
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Reviewed-by: Jingbo Xu <jefflexu@linux.alibaba.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Link: https://lore.kernel.org/r/20240424084247.759432-1-lihongbo22@huawei.com
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
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Pull smb client fixes from Steve French:
"Three smb3 client fixes, all also for stable:
- two small locking fixes spotted by Coverity
- FILE_ALL_INFO and network_open_info packing fix"
* tag '6.9-rc5-cifs-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
smb3: fix lock ordering potential deadlock in cifs_sync_mid_result
smb3: missing lock when picking channel
smb: client: Fix struct_group() usage in __packed structs
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"11 hotfixes. 8 are cc:stable and the remaining 3 (nice ratio!) address
post-6.8 issues or aren't considered suitable for backporting.
All except one of these are for MM. I see no particular theme - it's
singletons all over"
* tag 'mm-hotfixes-stable-2024-04-26-13-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mm/hugetlb: fix DEBUG_LOCKS_WARN_ON(1) when dissolve_free_hugetlb_folio()
selftests: mm: protection_keys: save/restore nr_hugepages value from launch script
stackdepot: respect __GFP_NOLOCKDEP allocation flag
hugetlb: check for anon_vma prior to folio allocation
mm: zswap: fix shrinker NULL crash with cgroup_disable=memory
mm: turn folio_test_hugetlb into a PageType
mm: support page_mapcount() on page_has_type() pages
mm: create FOLIO_FLAG_FALSE and FOLIO_TYPE_OPS macros
mm/hugetlb: fix missing hugetlb_lock for resv uncharge
selftests: mm: fix unused and uninitialized variable warning
selftests/harness: remove use of LINE_MAX
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git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:
"This contains a few small fixes for this merge window and the attempt
to handle the ntfs removal regression that was reported a little while
ago:
- After the removal of the legacy ntfs driver we received reports
about regressions for some people that do mount "ntfs" explicitly
and expect the driver to be available. Since ntfs3 is a drop-in for
legacy ntfs we alias legacy ntfs to ntfs3 just like ext3 is aliased
to ext4.
We also enforce legacy ntfs is always mounted read-only and give it
custom file operations to ensure that ioctl()'s can't be abused to
perform write operations.
- Fix an unbalanced module_get() in bdev_open().
- Two smaller fixes for the netfs work done earlier in this cycle.
- Fix the errno returned from the new FS_IOC_GETUUID and
FS_IOC_GETFSSYSFSPATH ioctls. Both commands just pull information
out of the superblock so there's no need to call into the actual
ioctl handlers.
So instead of returning ENOIOCTLCMD to indicate to fallback we just
return ENOTTY directly avoiding that indirection"
* tag 'vfs-6.9-rc6.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
netfs: Fix the pre-flush when appending to a file in writethrough mode
netfs: Fix writethrough-mode error handling
ntfs3: add legacy ntfs file operations
ntfs3: enforce read-only when used as legacy ntfs driver
ntfs3: serve as alias for the legacy ntfs driver
block: fix module reference leakage from bdev_open_by_dev error path
fs: Return ENOTTY directly if FS_IOC_GETUUID or FS_IOC_GETFSSYSFSPATH fail
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In netfs_perform_write(), when the file is marked NETFS_ICTX_WRITETHROUGH
or O_*SYNC or RWF_*SYNC was specified, write-through caching is performed
on a buffered file. When setting up for write-through, we flush any
conflicting writes in the region and wait for the write to complete,
failing if there's a write error to return.
The issue arises if we're writing at or above the EOF position because we
skip the flush and - more importantly - the wait. This becomes a problem
if there's a partial folio at the end of the file that is being written out
and we want to make a write to it too. Both the already-running write and
the write we start both want to clear the writeback mark, but whoever is
second causes a warning looking something like:
------------[ cut here ]------------
R=00000012: folio 11 is not under writeback
WARNING: CPU: 34 PID: 654 at fs/netfs/write_collect.c:105
...
CPU: 34 PID: 654 Comm: kworker/u386:27 Tainted: G S ...
...
Workqueue: events_unbound netfs_write_collection_worker
...
RIP: 0010:netfs_writeback_lookup_folio
Fix this by making the flush-and-wait unconditional. It will do nothing if
there are no folios in the pagecache and will return quickly if there are
no folios in the region specified.
Further, move the WBC attachment above the flush call as the flush is going
to attach a WBC and detach it again if it is not present - and since we
need one anyway we might as well share it.
Fixes: 41d8e7673a77 ("netfs: Implement a write-through caching option")
Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202404161031.468b84f-oliver.sang@intel.com
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/2150448.1714130115@warthog.procyon.org.uk
Reviewed-by: Jeffrey Layton <jlayton@kernel.org>
cc: Eric Van Hensbergen <ericvh@kernel.org>
cc: Latchesar Ionkov <lucho@ionkov.net>
cc: Dominique Martinet <asmadeus@codewreck.org>
cc: Christian Schoenebeck <linux_oss@crudebyte.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
cc: v9fs@lists.linux.dev
cc: linux-afs@lists.infradead.org
cc: linux-cifs@vger.kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs
Pull 9p fix from Eric Van Hensbergen:
"This contains a single mitigation to help deal with an apparent race
condition between client and server having to deal with inode number
collisions"
* tag '9p-for-6.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
fs/9p: mitigate inode collisions
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Ensure that args.acl is initialized early. It is used in an
unconditional call to kfree() on the way out of
nfsd4_encode_fattr4().
Reported-by: Scott Mayhew <smayhew@redhat.com>
Fixes: 83ab8678ad0c ("NFSD: Add struct nfsd4_fattr_args")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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Coverity spotted that the cifs_sync_mid_result function could deadlock
"Thread deadlock (ORDER_REVERSAL) lock_order: Calling spin_lock acquires
lock TCP_Server_Info.srv_lock while holding lock TCP_Server_Info.mid_lock"
Addresses-Coverity: 1590401 ("Thread deadlock (ORDER_REVERSAL)")
Cc: stable@vger.kernel.org
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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Coverity spotted a place where we should have been holding the
channel lock when accessing the ses channel index.
Addresses-Coverity: 1582039 ("Data race condition (MISSING_LOCK)")
Cc: stable@vger.kernel.org
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux
Pull nfsd fixes from Chuck Lever:
- Revert some backchannel fixes that went into v6.9-rc
* tag 'nfsd-6.9-5' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
Revert "NFSD: Convert the callback workqueue to use delayed_work"
Revert "NFSD: Reschedule CB operations when backchannel rpc_clnt is shut down"
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One of my CI runs popped the following lockdep splat
======================================================
WARNING: possible circular locking dependency detected
6.9.0-rc4+ #1 Not tainted
------------------------------------------------------
btrfs/471533 is trying to acquire lock:
ffff92ba46980850 (&fs_info->cleaner_mutex){+.+.}-{3:3}, at: btrfs_quota_disable+0x54/0x4c0
but task is already holding lock:
ffff92ba46980bd0 (&fs_info->subvol_sem){++++}-{3:3}, at: btrfs_ioctl+0x1c8f/0x2600
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (&fs_info->subvol_sem){++++}-{3:3}:
down_read+0x42/0x170
btrfs_rename+0x607/0xb00
btrfs_rename2+0x2e/0x70
vfs_rename+0xaf8/0xfc0
do_renameat2+0x586/0x600
__x64_sys_rename+0x43/0x50
do_syscall_64+0x95/0x180
entry_SYSCALL_64_after_hwframe+0x76/0x7e
-> #1 (&sb->s_type->i_mutex_key#16){++++}-{3:3}:
down_write+0x3f/0xc0
btrfs_inode_lock+0x40/0x70
prealloc_file_extent_cluster+0x1b0/0x370
relocate_file_extent_cluster+0xb2/0x720
relocate_data_extent+0x107/0x160
relocate_block_group+0x442/0x550
btrfs_relocate_block_group+0x2cb/0x4b0
btrfs_relocate_chunk+0x50/0x1b0
btrfs_balance+0x92f/0x13d0
btrfs_ioctl+0x1abf/0x2600
__x64_sys_ioctl+0x97/0xd0
do_syscall_64+0x95/0x180
entry_SYSCALL_64_after_hwframe+0x76/0x7e
-> #0 (&fs_info->cleaner_mutex){+.+.}-{3:3}:
__lock_acquire+0x13e7/0x2180
lock_acquire+0xcb/0x2e0
__mutex_lock+0xbe/0xc00
btrfs_quota_disable+0x54/0x4c0
btrfs_ioctl+0x206b/0x2600
__x64_sys_ioctl+0x97/0xd0
do_syscall_64+0x95/0x180
entry_SYSCALL_64_after_hwframe+0x76/0x7e
other info that might help us debug this:
Chain exists of:
&fs_info->cleaner_mutex --> &sb->s_type->i_mutex_key#16 --> &fs_info->subvol_sem
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&fs_info->subvol_sem);
lock(&sb->s_type->i_mutex_key#16);
lock(&fs_info->subvol_sem);
lock(&fs_info->cleaner_mutex);
*** DEADLOCK ***
2 locks held by btrfs/471533:
#0: ffff92ba4319e420 (sb_writers#14){.+.+}-{0:0}, at: btrfs_ioctl+0x3b5/0x2600
#1: ffff92ba46980bd0 (&fs_info->subvol_sem){++++}-{3:3}, at: btrfs_ioctl+0x1c8f/0x2600
stack backtrace:
CPU: 1 PID: 471533 Comm: btrfs Kdump: loaded Not tainted 6.9.0-rc4+ #1
Call Trace:
<TASK>
dump_stack_lvl+0x77/0xb0
check_noncircular+0x148/0x160
? lock_acquire+0xcb/0x2e0
__lock_acquire+0x13e7/0x2180
lock_acquire+0xcb/0x2e0
? btrfs_quota_disable+0x54/0x4c0
? lock_is_held_type+0x9a/0x110
__mutex_lock+0xbe/0xc00
? btrfs_quota_disable+0x54/0x4c0
? srso_return_thunk+0x5/0x5f
? lock_acquire+0xcb/0x2e0
? btrfs_quota_disable+0x54/0x4c0
? btrfs_quota_disable+0x54/0x4c0
btrfs_quota_disable+0x54/0x4c0
btrfs_ioctl+0x206b/0x2600
? srso_return_thunk+0x5/0x5f
? __do_sys_statfs+0x61/0x70
__x64_sys_ioctl+0x97/0xd0
do_syscall_64+0x95/0x180
? srso_return_thunk+0x5/0x5f
? reacquire_held_locks+0xd1/0x1f0
? do_user_addr_fault+0x307/0x8a0
? srso_return_thunk+0x5/0x5f
? lock_acquire+0xcb/0x2e0
? srso_return_thunk+0x5/0x5f
? srso_return_thunk+0x5/0x5f
? find_held_lock+0x2b/0x80
? srso_return_thunk+0x5/0x5f
? lock_release+0xca/0x2a0
? srso_return_thunk+0x5/0x5f
? do_user_addr_fault+0x35c/0x8a0
? srso_return_thunk+0x5/0x5f
? trace_hardirqs_off+0x4b/0xc0
? srso_return_thunk+0x5/0x5f
? lockdep_hardirqs_on_prepare+0xde/0x190
? srso_return_thunk+0x5/0x5f
This happens because when we call rename we already have the inode mutex
held, and then we acquire the subvol_sem if we are a subvolume. This
makes the dependency
inode lock -> subvol sem
When we're running data relocation we will preallocate space for the
data relocation inode, and we always run the relocation under the
->cleaner_mutex. This now creates the dependency of
cleaner_mutex -> inode lock (from the prealloc) -> subvol_sem
Qgroup delete is doing this in the opposite order, it is acquiring the
subvol_sem and then it is acquiring the cleaner_mutex, which results in
this lockdep splat. This deadlock can't happen in reality, because we
won't ever rename the data reloc inode, nor is the data reloc inode a
subvolume.
However this is fairly easy to fix, simply take the cleaner mutex in the
case where we are disabling qgroups before we take the subvol_sem. This
resolves the lockdep splat.
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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The previous patch that replaced BUG_ON by error handling forgot to
unlock the mutex in the error path.
Link: https://lore.kernel.org/all/Zh%2fHpAGFqa7YAFuM@duo.ucw.cz
Reported-by: Pavel Machek <pavel@denx.de>
Fixes: 7411055db5ce ("btrfs: handle chunk tree lookup error in btrfs_relocate_sys_chunks()")
CC: stable@vger.kernel.org
Reviewed-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Dominique Martinet <dominique.martinet@atmark-techno.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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From exFAT specification, the reserved fields should initialize
to zero and should not use for any purpose.
If create a new dentry set in the UNUSED dentries, all fields
had been zeroed when allocating cluster to parent directory.
But if create a new dentry set in the DELETED dentries, the
reserved fields in file and stream extension dentries may be
non-zero. Because only the valid bit of the type field of the
dentry is cleared in exfat_remove_entries(), if the type of
dentry is different from the original(For example, a dentry that
was originally a file name dentry, then set to deleted dentry,
and then set as a file dentry), the reserved fields is non-zero.
So this commit initializes the dentry to 0 before createing file
dentry and stream extension dentry.
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Return 0 for pages which can't be mapped. This matches how page_mapped()
works. It is more convenient for users to not have to filter out these
pages.
Link: https://lkml.kernel.org/r/20240321142448.1645400-5-willy@infradead.org
Fixes: 9c5ccf2db04b ("mm: remove HUGETLB_PAGE_DTOR")
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- fix information leak by the buffer returned from LOGICAL_INO ioctl
- fix flipped condition in scrub when tracking sectors in zoned mode
- fix calculation when dropping extent range
- reinstate fallback to write uncompressed data in case of fragmented
space that could not store the entire compressed chunk
- minor fix to message formatting style to make it conforming to the
commonly used style
* tag 'for-6.9-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: fix wrong block_start calculation for btrfs_drop_extent_map_range()
btrfs: fix information leak in btrfs_ioctl_logical_to_ino()
btrfs: fallback if compressed IO fails for ENOSPC
btrfs: scrub: run relocation repair when/only needed
btrfs: remove colon from messages with state
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Use struct_group_attr() in __packed structs, instead of struct_group().
Below you can see the pahole output before/after changes:
pahole -C smb2_file_network_open_info fs/smb/client/smb2ops.o
struct smb2_file_network_open_info {
union {
struct {
__le64 CreationTime; /* 0 8 */
__le64 LastAccessTime; /* 8 8 */
__le64 LastWriteTime; /* 16 8 */
__le64 ChangeTime; /* 24 8 */
__le64 AllocationSize; /* 32 8 */
__le64 EndOfFile; /* 40 8 */
__le32 Attributes; /* 48 4 */
}; /* 0 56 */
struct {
__le64 CreationTime; /* 0 8 */
__le64 LastAccessTime; /* 8 8 */
__le64 LastWriteTime; /* 16 8 */
__le64 ChangeTime; /* 24 8 */
__le64 AllocationSize; /* 32 8 */
__le64 EndOfFile; /* 40 8 */
__le32 Attributes; /* 48 4 */
} network_open_info; /* 0 56 */
}; /* 0 56 */
__le32 Reserved; /* 56 4 */
/* size: 60, cachelines: 1, members: 2 */
/* last cacheline: 60 bytes */
} __attribute__((__packed__));
pahole -C smb2_file_network_open_info fs/smb/client/smb2ops.o
struct smb2_file_network_open_info {
union {
struct {
__le64 CreationTime; /* 0 8 */
__le64 LastAccessTime; /* 8 8 */
__le64 LastWriteTime; /* 16 8 */
__le64 ChangeTime; /* 24 8 */
__le64 AllocationSize; /* 32 8 */
__le64 EndOfFile; /* 40 8 */
__le32 Attributes; /* 48 4 */
} __attribute__((__packed__)); /* 0 52 */
struct {
__le64 CreationTime; /* 0 8 */
__le64 LastAccessTime; /* 8 8 */
__le64 LastWriteTime; /* 16 8 */
__le64 ChangeTime; /* 24 8 */
__le64 AllocationSize; /* 32 8 */
__le64 EndOfFile; /* 40 8 */
__le32 Attributes; /* 48 4 */
} __attribute__((__packed__)) network_open_info; /* 0 52 */
}; /* 0 52 */
__le32 Reserved; /* 52 4 */
/* size: 56, cachelines: 1, members: 2 */
/* last cacheline: 56 bytes */
};
pahole -C smb_com_open_rsp fs/smb/client/cifssmb.o
struct smb_com_open_rsp {
...
union {
struct {
__le64 CreationTime; /* 48 8 */
__le64 LastAccessTime; /* 56 8 */
/* --- cacheline 1 boundary (64 bytes) --- */
__le64 LastWriteTime; /* 64 8 */
__le64 ChangeTime; /* 72 8 */
__le32 FileAttributes; /* 80 4 */
}; /* 48 40 */
struct {
__le64 CreationTime; /* 48 8 */
__le64 LastAccessTime; /* 56 8 */
/* --- cacheline 1 boundary (64 bytes) --- */
__le64 LastWriteTime; /* 64 8 */
__le64 ChangeTime; /* 72 8 */
__le32 FileAttributes; /* 80 4 */
} common_attributes; /* 48 40 */
}; /* 48 40 */
...
/* size: 111, cachelines: 2, members: 14 */
/* last cacheline: 47 bytes */
} __attribute__((__packed__));
pahole -C smb_com_open_rsp fs/smb/client/cifssmb.o
struct smb_com_open_rsp {
...
union {
struct {
__le64 CreationTime; /* 48 8 */
__le64 LastAccessTime; /* 56 8 */
/* --- cacheline 1 boundary (64 bytes) --- */
__le64 LastWriteTime; /* 64 8 */
__le64 ChangeTime; /* 72 8 */
__le32 FileAttributes; /* 80 4 */
} __attribute__((__packed__)); /* 48 36 */
struct {
__le64 CreationTime; /* 48 8 */
__le64 LastAccessTime; /* 56 8 */
/* --- cacheline 1 boundary (64 bytes) --- */
__le64 LastWriteTime; /* 64 8 */
__le64 ChangeTime; /* 72 8 */
__le32 FileAttributes; /* 80 4 */
} __attribute__((__packed__)) common_attributes; /* 48 36 */
}; /* 48 36 */
...
/* size: 107, cachelines: 2, members: 14 */
/* last cacheline: 43 bytes */
} __attribute__((__packed__));
pahole -C FILE_ALL_INFO fs/smb/client/cifssmb.o
typedef struct {
union {
struct {
__le64 CreationTime; /* 0 8 */
__le64 LastAccessTime; /* 8 8 */
__le64 LastWriteTime; /* 16 8 */
__le64 ChangeTime; /* 24 8 */
__le32 Attributes; /* 32 4 */
}; /* 0 40 */
struct {
__le64 CreationTime; /* 0 8 */
__le64 LastAccessTime; /* 8 8 */
__le64 LastWriteTime; /* 16 8 */
__le64 ChangeTime; /* 24 8 */
__le32 Attributes; /* 32 4 */
} common_attributes; /* 0 40 */
}; /* 0 40 */
...
/* size: 113, cachelines: 2, members: 17 */
/* last cacheline: 49 bytes */
} __attribute__((__packed__)) FILE_ALL_INFO;
pahole -C FILE_ALL_INFO fs/smb/client/cifssmb.o
typedef struct {
union {
struct {
__le64 CreationTime; /* 0 8 */
__le64 LastAccessTime; /* 8 8 */
__le64 LastWriteTime; /* 16 8 */
__le64 ChangeTime; /* 24 8 */
__le32 Attributes; /* 32 4 */
} __attribute__((__packed__)); /* 0 36 */
struct {
__le64 CreationTime; /* 0 8 */
__le64 LastAccessTime; /* 8 8 */
__le64 LastWriteTime; /* 16 8 */
__le64 ChangeTime; /* 24 8 */
__le32 Attributes; /* 32 4 */
} __attribute__((__packed__)) common_attributes; /* 0 36 */
}; /* 0 36 */
...
/* size: 109, cachelines: 2, members: 17 */
/* last cacheline: 45 bytes */
} __attribute__((__packed__)) FILE_ALL_INFO;
Fixes: 0015eb6e1238 ("smb: client, common: fix fortify warnings")
Cc: stable@vger.kernel.org
Reviewed-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
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This commit was a pre-requisite for commit c1ccfcf1a9bf ("NFSD:
Reschedule CB operations when backchannel rpc_clnt is shut down"),
which has already been reverted.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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The reverted commit attempted to enable NFSD to retransmit pending
callback operations if an NFS client disconnects, but
unintentionally introduces a hazardous behavior regression if the
client becomes permanently unreachable while callback operations are
still pending.
A disconnect can occur due to network partition or if the NFS server
needs to force the NFS client to retransmit (for example, if a GSS
window under-run occurs).
Reverting the commit will make NFSD behave the same as it did in
v6.8 and before. Pending callback operations are permanently lost if
the client connection is terminated before the client receives them.
For some callback operations, this loss is not harmful.
However, for CB_RECALL, the loss means a delegation might be revoked
unnecessarily. For CB_OFFLOAD, pending COPY operations will never
complete unless the NFS client subsequently sends an OFFLOAD_STATUS
operation, which the Linux NFS client does not currently implement.
These issues still need to be addressed somehow.
Reported-by: Dai Ngo <dai.ngo@oracle.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=218735
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
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Pull smb client fixes from Steve French:
- fscache fix
- fix for case where we could use uninitialized lease
- add tracepoint for debugging refcounting of tcon
- fix mount option regression (e.g. forceuid vs. noforceuid when uid=
specified) caused by conversion to the new mount API
* tag '6.9-rc5-smb-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: reinstate original behavior again for forceuid/forcegid
smb: client: fix rename(2) regression against samba
cifs: Add tracing for the cifs_tcon struct refcounting
cifs: Fix reacquisition of volume cookie on still-live connection
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Fix the error return in netfs_perform_write() acting in writethrough-mode
to return any cached error in the case that netfs_end_writethrough()
returns 0.
This can affect the use of O_SYNC/O_DSYNC/RWF_SYNC/RWF_DSYNC in 9p and afs.
Fixes: 41d8e7673a77 ("netfs: Implement a write-through caching option")
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/6736.1713343639@warthog.procyon.org.uk
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: Eric Van Hensbergen <ericvh@kernel.org>
cc: Latchesar Ionkov <lucho@ionkov.net>
cc: Dominique Martinet <asmadeus@codewreck.org>
cc: Christian Schoenebeck <linux_oss@crudebyte.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
cc: v9fs@lists.linux.dev
cc: linux-afs@lists.infradead.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
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To ensure that ioctl()s can't be used to circumvent write restrictions.
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Ensure that ntfs3 is mounted read-only when it is used to provide the
legacy ntfs driver.
Signed-off-by: Christian Brauner <brauner@kernel.org>
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Pull smb server fixes from Steve French:
"Five ksmbd server fixes, most also for stable:
- rename fix
- two fixes for potential out of bounds
- fix for connections from MacOS (padding in close response)
- fix for when to enable persistent handles"
* tag '6.9-rc5-ksmbd-fixes' of git://git.samba.org/ksmbd:
ksmbd: add continuous availability share parameter
ksmbd: common: use struct_group_attr instead of struct_group for network_open_info
ksmbd: clear RENAME_NOREPLACE before calling vfs_rename
ksmbd: validate request buffer size in smb2_allocate_rsp_buf()
ksmbd: fix slab-out-of-bounds in smb2_allocate_rsp_buf
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Pull bcachefs fixes from Kent Overstreet:
"Nothing too crazy in this one, and it looks like (fingers crossed) the
recovery and repair issues are settling down - although there's going
to be a long tail there, as we've still yet to really ramp up on error
injection or syzbot.
- fix a few more deadlocks in recovery
- fix u32/u64 issues in mi_btree_bitmap
- btree key cache shrinker now actually frees, with more
instrumentation coming so we can verify that it's working
correctly more easily in the future"
* tag 'bcachefs-2024-04-22' of https://evilpiepirate.org/git/bcachefs:
bcachefs: If we run merges at a lower watermark, they must be nonblocking
bcachefs: Fix inode early destruction path
bcachefs: Fix deadlock in journal write path
bcachefs: Tweak btree key cache shrinker so it actually frees
bcachefs: bkey_cached.btree_trans_barrier_seq needs to be a ulong
bcachefs: Fix missing call to bch2_fs_allocator_background_exit()
bcachefs: Check for journal entries overruning end of sb clean section
bcachefs: Fix bio alloc in check_extent_checksum()
bcachefs: fix leak in bch2_gc_write_reflink_key
bcachefs: KEY_TYPE_error is allowed for reflink
bcachefs: Fix bch2_dev_btree_bitmap_marked_sectors() shift
bcachefs: make sure to release last journal pin in replay
bcachefs: node scan: ignore multiple nodes with same seq if interior
bcachefs: Fix format specifier in validate_bset_keys()
bcachefs: Fix null ptr deref in twf from BCH_IOCTL_FSCK_OFFLINE
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forceuid/forcegid should be enabled by default when uid=/gid= options are
specified, but commit 24e0a1eff9e2 ("cifs: switch to new mount api")
changed the behavior. Due to the change, a mounted share does not show
intentional uid/gid for files and directories even though uid=/gid=
options are specified since forceuid/forcegid are not enabled.
This patch reinstates original behavior that overrides uid/gid with
specified uid/gid by the options.
Fixes: 24e0a1eff9e2 ("cifs: switch to new mount api")
Signed-off-by: Takayuki Nagata <tnagata@redhat.com>
Acked-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
Acked-by: Tom Talpey <tom@talpey.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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Detect and mitigate inode collsions that now occur since we
fixed 9p generating duplicate inode structures. Underlying
cause of these appears to be a race condition between reuse
of inode numbers in underlying file system and cleanup of
inode numbers in the client. Enabling caching
makes this much more likely to happen as it increases cleanup
latency due to writebacks.
Reported-by: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Eric Van Hensbergen <ericvh@kernel.org>
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To allow us extending the interface in the future.
Fixes: 44350256ab94 ("fuse: implement ioctls to manage backing files")
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
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Fix another deadlock related to the merge path; previously, we switched
to always running merges at a lower watermark (because they are
noncritical); but when we run at a lower watermark we also need to run
nonblocking or we've introduced a new deadlock.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Reported-and-tested-by: s@m-h.ug
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull kernfs bugfix and documentation update from Greg KH:
"Here are two changes for 6.9-rc5 that deal with "driver core" stuff,
that do the following:
- sysfs reference leak fix
- embargoed-hardware-issues.rst update for Power
Both of these have been in linux-next for over a week with no reported
issues"
* tag 'driver-core-6.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
Documentation: embargoed-hardware-issues.rst: Add myself for Power
fs: sysfs: Fix reference leak in sysfs_break_active_protection()
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discard_new_inode() is the wrong interface to use when we need to free
an inode that was never inserted into the inode hash table; we can
bypass the whole iput() -> evict() path and replace it with
__destroy_inode(); kmem_cache_free() - this fixes a WARN_ON() about
I_NEW.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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bch2_journal_write() was incorrectly waiting on earlier journal writes
synchronously; this usually worked because most of the time we'd be
running in the context of a thread that did a journal_buf_put(), but
sometimes we'd be running out of the same workqueue that completes those
prior journal writes.
Additionally, this makes sure to punt to a workqueue before submitting
preflushes - we really don't want to be calling submit_bio() in the main
transaction commit path.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Freeing key cache items is a multi stage process; we need to wait for an
SRCU grace period to elapse, and we handle this ourselves - partially to
avoid callback overhead, but primarily so that when allocating we can
first allocate from the freed items waiting for an SRCU grace period.
Previously, the shrinker was counting the items on the 'waiting for SRCU
grace period' lists as items being scanned, but this meant that too many
items waiting for an SRCU grace period could prevent it from doing any
work at all.
After this, we're seeing that items skipped due to the accessed bit are
the main cause of the shrinker not making any progress, and we actually
want the key cache shrinker to run quite aggressively because reclaimed
items will still generally be found (more compactly) in the btree node
cache - so we also tweak the shrinker to not count those against
nr_to_scan.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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this stores the SRCU sequence number, which we use to check if an SRCU
barrier has elapsed; this is a partial fix for the key cache shrinker
not actually freeing.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Fix a missing bounds check in superblock validation.
Note that we don't yet have repair code for this case - repair code for
individual items is generally low priority, since the whole superblock
is checksummed, validated prior to write, and we have backups.
Reported-by: lei lu <llfamsec@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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If capabilities of the share is not SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY,
ksmbd should not grant a persistent handle to the client.
This patch add continuous availability share parameter to control it.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
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network_open_info
4byte padding cause the connection issue with the applications of MacOS.
smb2_close response size increases by 4 bytes by padding, And the smb
client of MacOS check it and stop the connection. This patch use
struct_group_attr instead of struct_group for network_open_info to use
__packed to avoid padding.
Fixes: 0015eb6e1238 ("smb: client, common: fix fortify warnings")
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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File overwrite case is explicitly handled, so it is not necessary to
pass RENAME_NOREPLACE to vfs_rename.
Clearing the flag fixes rename operations when the share is a ntfs-3g
mount. The latter uses an older version of fuse with no support for
flags in the ->rename op.
Cc: stable@vger.kernel.org
Signed-off-by: Marios Makassikis <mmakassikis@freebox.fr>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
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The response buffer should be allocated in smb2_allocate_rsp_buf
before validating request. But the fields in payload as well as smb2 header
is used in smb2_allocate_rsp_buf(). This patch add simple buffer size
validation to avoid potencial out-of-bounds in request buffer.
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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If ->ProtocolId is SMB2_TRANSFORM_PROTO_NUM, smb2 request size
validation could be skipped. if request size is smaller than
sizeof(struct smb2_query_info_req), slab-out-of-bounds read can happen in
smb2_allocate_rsp_buf(). This patch allocate response buffer after
decrypting transform request. smb3_decrypt_req() will validate transform
request size and avoid slab-out-of-bound in smb2_allocate_rsp_buf().
Reported-by: Norbert Szetei <norbert@doyensec.com>
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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After commit 2c7d399e551c ("smb: client: reuse file lease key in
compound operations") the client started reusing lease keys for
rename, unlink and set path size operations to prevent it from
breaking its own leases and thus causing unnecessary lease breaks to
same connection.
The implementation relies on positive dentries and
cifsInodeInfo::lease_granted to decide whether reusing lease keys for
the compound requests. cifsInodeInfo::lease_granted was introduced by
commit 0ab95c2510b6 ("Defer close only when lease is enabled.") to
indicate whether lease caching is granted for a specific file, but
that can only happen until file is open, so
cifsInodeInfo::lease_granted was left uninitialised in ->alloc_inode
and then client started sending random lease keys for files that
hadn't any leases.
This fixes the following test case against samba:
mount.cifs //srv/share /mnt/1 -o ...,nosharesock
mount.cifs //srv/share /mnt/2 -o ...,nosharesock
touch /mnt/1/foo; tail -f /mnt/1/foo & pid=$!
mv /mnt/2/foo /mnt/2/bar # fails with -EIO
kill $pid
Fixes: 0ab95c2510b6 ("Defer close only when lease is enabled.")
Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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Add tracing for the refcounting/lifecycle of the cifs_tcon struct, marking
different events with different labels and giving each tcon its own debug
ID so that the tracelines corresponding to individual tcons can be
distinguished. This can be enabled with:
echo 1 >/sys/kernel/debug/tracing/events/cifs/smb3_tcon_ref/enable
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: linux-cifs@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
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During mount, cifs_mount_get_tcon() gets a tcon resource connection record
and then attaches an fscache volume cookie to it. However, it does this
irrespective of whether or not the tcon returned from cifs_get_tcon() is a
new record or one that's already in use. This leads to a warning about a
volume cookie collision and a leaked volume cookie because tcon->fscache
gets reset.
Fix this be adding a mutex and a "we've already tried this" flag and only
doing it once for the lifetime of the tcon.
[!] Note: Looking at cifs_mount_get_tcon(), a more general solution may
actually be required. Reacquiring the volume cookie isn't the only thing
that function does: it also partially reinitialises the tcon record without
any locking - which may cause live filesystem ops already using the tcon
through a previous mount to malfunction.
This can be reproduced simply by something like:
mount //example.com/test /xfstest.test -o user=shares,pass=xxx,fsc
mount //example.com/test /mnt -o user=shares,pass=xxx,fsc
Fixes: 70431bfd825d ("cifs: Support fscache indexing rewrite")
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
cc: Shyam Prasad N <sprasad@microsoft.com>
cc: linux-cifs@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
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