Commit Graph

1296166 Commits

Author SHA1 Message Date
Li Lingfeng
eb059a413c nfsd: remove unused parameter of nfsd_file_mark_find_or_create
Commit 427f5f83a3 ("NFSD: Ensure nf_inode is never dereferenced") passes
inode directly to nfsd_file_mark_find_or_create instead of getting it from
nf, so there is no need to pass nf.

Signed-off-by: Li Lingfeng <lilingfeng3@huawei.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
Hongbo Li
c2feb7ee39 nfsd: use LIST_HEAD() to simplify code
list_head can be initialized automatically with LIST_HEAD()
instead of calling INIT_LIST_HEAD().

Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
Li Lingfeng
340e61e44c nfsd: map the EBADMSG to nfserr_io to avoid warning
Ext4 will throw -EBADMSG through ext4_readdir when a checksum error
occurs, resulting in the following WARNING.

Fix it by mapping EBADMSG to nfserr_io.

nfsd_buffered_readdir
 iterate_dir // -EBADMSG -74
  ext4_readdir // .iterate_shared
   ext4_dx_readdir
    ext4_htree_fill_tree
     htree_dirblock_to_tree
      ext4_read_dirblock
       __ext4_read_dirblock
        ext4_dirblock_csum_verify
         warn_no_space_for_csum
          __warn_no_space_for_csum
        return ERR_PTR(-EFSBADCRC) // -EBADMSG -74
 nfserrno // WARNING

[  161.115610] ------------[ cut here ]------------
[  161.116465] nfsd: non-standard errno: -74
[  161.117315] WARNING: CPU: 1 PID: 780 at fs/nfsd/nfsproc.c:878 nfserrno+0x9d/0xd0
[  161.118596] Modules linked in:
[  161.119243] CPU: 1 PID: 780 Comm: nfsd Not tainted 5.10.0-00014-g79679361fd5d #138
[  161.120684] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qe
mu.org 04/01/2014
[  161.123601] RIP: 0010:nfserrno+0x9d/0xd0
[  161.124676] Code: 0f 87 da 30 dd 00 83 e3 01 b8 00 00 00 05 75 d7 44 89 ee 48 c7 c7 c0 57 24 98 89 44 24 04 c6
 05 ce 2b 61 03 01 e8 99 20 d8 00 <0f> 0b 8b 44 24 04 eb b5 4c 89 e6 48 c7 c7 a0 6d a4 99 e8 cc 15 33
[  161.127797] RSP: 0018:ffffc90000e2f9c0 EFLAGS: 00010286
[  161.128794] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[  161.130089] RDX: 1ffff1103ee16f6d RSI: 0000000000000008 RDI: fffff520001c5f2a
[  161.131379] RBP: 0000000000000022 R08: 0000000000000001 R09: ffff8881f70c1827
[  161.132664] R10: ffffed103ee18304 R11: 0000000000000001 R12: 0000000000000021
[  161.133949] R13: 00000000ffffffb6 R14: ffff8881317c0000 R15: ffffc90000e2fbd8
[  161.135244] FS:  0000000000000000(0000) GS:ffff8881f7080000(0000) knlGS:0000000000000000
[  161.136695] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  161.137761] CR2: 00007fcaad70b348 CR3: 0000000144256006 CR4: 0000000000770ee0
[  161.139041] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  161.140291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  161.141519] PKRU: 55555554
[  161.142076] Call Trace:
[  161.142575]  ? __warn+0x9b/0x140
[  161.143229]  ? nfserrno+0x9d/0xd0
[  161.143872]  ? report_bug+0x125/0x150
[  161.144595]  ? handle_bug+0x41/0x90
[  161.145284]  ? exc_invalid_op+0x14/0x70
[  161.146009]  ? asm_exc_invalid_op+0x12/0x20
[  161.146816]  ? nfserrno+0x9d/0xd0
[  161.147487]  nfsd_buffered_readdir+0x28b/0x2b0
[  161.148333]  ? nfsd4_encode_dirent_fattr+0x380/0x380
[  161.149258]  ? nfsd_buffered_filldir+0xf0/0xf0
[  161.150093]  ? wait_for_concurrent_writes+0x170/0x170
[  161.151004]  ? generic_file_llseek_size+0x48/0x160
[  161.151895]  nfsd_readdir+0x132/0x190
[  161.152606]  ? nfsd4_encode_dirent_fattr+0x380/0x380
[  161.153516]  ? nfsd_unlink+0x380/0x380
[  161.154256]  ? override_creds+0x45/0x60
[  161.155006]  nfsd4_encode_readdir+0x21a/0x3d0
[  161.155850]  ? nfsd4_encode_readlink+0x210/0x210
[  161.156731]  ? write_bytes_to_xdr_buf+0x97/0xe0
[  161.157598]  ? __write_bytes_to_xdr_buf+0xd0/0xd0
[  161.158494]  ? lock_downgrade+0x90/0x90
[  161.159232]  ? nfs4svc_decode_voidarg+0x10/0x10
[  161.160092]  nfsd4_encode_operation+0x15a/0x440
[  161.160959]  nfsd4_proc_compound+0x718/0xe90
[  161.161818]  nfsd_dispatch+0x18e/0x2c0
[  161.162586]  svc_process_common+0x786/0xc50
[  161.163403]  ? nfsd_svc+0x380/0x380
[  161.164137]  ? svc_printk+0x160/0x160
[  161.164846]  ? svc_xprt_do_enqueue.part.0+0x365/0x380
[  161.165808]  ? nfsd_svc+0x380/0x380
[  161.166523]  ? rcu_is_watching+0x23/0x40
[  161.167309]  svc_process+0x1a5/0x200
[  161.168019]  nfsd+0x1f5/0x380
[  161.168663]  ? nfsd_shutdown_threads+0x260/0x260
[  161.169554]  kthread+0x1c4/0x210
[  161.170224]  ? kthread_insert_work_sanity_check+0x80/0x80
[  161.171246]  ret_from_fork+0x1f/0x30

Signed-off-by: Li Lingfeng <lilingfeng3@huawei.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
Li Lingfeng
2039c5da5d NFSD: remove redundant assignment operation
Commit 5826e09bf3 ("NFSD: OP_CB_RECALL_ANY should recall both read and
write delegations") added a new assignment statement to add
RCA4_TYPE_MASK_WDATA_DLG to ra_bmval bitmask of OP_CB_RECALL_ANY. So the
old one should be removed.

Signed-off-by: Li Lingfeng <lilingfeng3@huawei.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
Chuck Lever
ecbf849405 .mailmap: Add an entry for my work email address
Collect a few very old previous employers as well.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
Chuck Lever
202f39039a NFSD: Fix NFSv4's PUTPUBFH operation
According to RFC 8881, all minor versions of NFSv4 support PUTPUBFH.

Replace the XDR decoder for PUTPUBFH with a "noop" since we no
longer want the minorversion check, and PUTPUBFH has no arguments to
decode. (Ideally nfsd4_decode_noop should really be called
nfsd4_decode_void).

PUTPUBFH should now behave just like PUTROOTFH.

Reported-by: Cedric Blancher <cedric.blancher@gmail.com>
Fixes: e1a90ebd8b ("NFSD: Combine decode operations for v4 and v4.1")
Cc: Dan Shelton <dan.f.shelton@gmail.com>
Cc: Roland Mainz <roland.mainz@nrubsig.org>
Cc: stable@vger.kernel.org
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
Mark Grimes
32b34fa485 nfsd: Add quotes to client info 'callback address'
The 'callback address' in client_info_show is output without quotes
causing yaml parsers to fail on processing IPv6 addresses.
Adding quotes to 'callback address' also matches that used by
the 'address' field.

Signed-off-by: Mark Grimes <mark.grimes@ixsystems.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
Chuck Lever
c4de97f7c4 svcrdma: Handle device removal outside of the CM event handler
Synchronously wait for all disconnects to complete to ensure the
transports have divested all hardware resources before the
underlying RDMA device can safely be removed.

Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
NeilBrown
438f81e0e9 nfsd: move error choice for incorrect object types to version-specific code.
If an NFS operation expects a particular sort of object (file, dir, link,
etc) but gets a file handle for a different sort of object, it must
return an error.  The actual error varies among NFS versions in non-trivial
ways.

For v2 and v3 there are ISDIR and NOTDIR errors and, for NFSv4 only,
INVAL is suitable.

For v4.0 there is also NFS4ERR_SYMLINK which should be used if a SYMLINK
was found when not expected.  This take precedence over NOTDIR.

For v4.1+ there is also NFS4ERR_WRONG_TYPE which should be used in
preference to EINVAL when none of the specific error codes apply.

When nfsd_mode_check() finds a symlink where it expected a directory it
needs to return an error code that can be converted to NOTDIR for v2 or
v3 but will be SYMLINK for v4.  It must be different from the error
code returns when it finds a symlink but expects a regular file - that
must be converted to EINVAL or SYMLINK.

So we introduce an internal error code nfserr_symlink_not_dir which each
version converts as appropriate.

nfsd_check_obj_isreg() is similar to nfsd_mode_check() except that it is
only used by NFSv4 and only for OPEN.  NFSERR_INVAL is never a suitable
error if the object is the wrong time.  For v4.0 we use nfserr_symlink
for non-dirs even if not a symlink.  For v4.1 we have nfserr_wrong_type.
We handle this difference in-place in nfsd_check_obj_isreg() as there is
nothing to be gained by delaying the choice to nfsd4_map_status().

As a result of these changes, nfsd_mode_check() doesn't need an rqstp
arg any more.

Note that NFSv4 operations are actually performed in the xdr code(!!!)
so to the only place that we can map the status code successfully is in
nfsd4_encode_operation().

Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
NeilBrown
36ffa3d0de nfsd: be more systematic about selecting error codes for internal use.
Rather than using ad hoc values for internal errors (30000, 11000, ...)
use 'enum' to sequentially allocate numbers starting from the first
known available number - now visible as NFS4ERR_FIRST_FREE.

The goal is values that are distinct from all be32 error codes.  To get
those we must first select integers that are not already used, then
convert them with cpu_to_be32().

Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
NeilBrown
1459ad5767 nfsd: Move error code mapping to per-version proc code.
There is code scattered around nfsd which chooses an error status based
on the particular version of nfs being used.  It is cleaner to have the
version specific choices in version specific code.

With this patch common code returns the most specific error code
possible and the version specific code maps that if necessary.

Both v2 (nfsproc.c) and v3 (nfs3proc.c) now have a "map_status()"
function which is called to map the resp->status before each non-trivial
nfsd_proc_* or nfsd3_proc_* function returns.

NFS4ERR_SYMLINK and NFS4ERR_WRONG_TYPE introduce extra complications and
are left for a later patch.

Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
NeilBrown
ef7f6c4904 nfsd: move V4ROOT version check to nfsd_set_fh_dentry()
This further centralizes version number checks.

Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
NeilBrown
c689bdd3bf nfsd: further centralize protocol version checks.
With this patch the only places that test ->rq_vers against a specific
version are nfsd_v4client() and nfsd_set_fh_dentry().
The latter sets some flags in the svc_fh, which now includes:
  fh_64bit_cookies
  fh_use_wgather

Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
NeilBrown
4f67d24f72 nfsd: use nfsd_v4client() in nfsd_breaker_owns_lease()
nfsd_breaker_owns_lease() currently open-codes the same test that
nfsd_v4client() performs.

With this patch we use nfsd_v4client() instead.

Also as i_am_nfsd() is only used in combination with kthread_data(),
replace it with nfsd_current_rqst() which combines the two and returns a
valid svc_rqst, or NULL.

The test for NULL is moved into nfsd_v4client() for code clarity.

Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
NeilBrown
9fd45c16f3 nfsd: Pass 'cred' instead of 'rqstp' to some functions.
nfsd_permission(), exp_rdonly(), nfsd_setuser(), and nfsexp_flags()
only ever need the cred out of rqstp, so pass it explicitly instead of
the whole rqstp.

This makes the interfaces cleaner.

Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
NeilBrown
c55aeef776 nfsd: Don't pass all of rqst into rqst_exp_find()
Rather than passing the whole rqst, pass the pieces that are actually
needed.  This makes the inputs to rqst_exp_find() more obvious.

Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
Sagi Grimberg
11673b2a91 nfsd: don't assume copy notify when preprocessing the stateid
Move the stateid handling to nfsd4_copy_notify.
If nfs4_preprocess_stateid_op did not produce an output stateid, error out.

Copy notify specifically does not permit the use of special stateids,
so enforce that outside generic stateid pre-processing.

Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Olga Kornievskaia <aglo@umich.edu>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
NeilBrown
3391fc92db sunrpc: allow svc threads to fail initialisation cleanly
If an svc thread needs to perform some initialisation that might fail,
it has no good way to handle the failure.

Before the thread can exit it must call svc_exit_thread(), but that
requires the service mutex to be held.  The thread cannot simply take
the mutex as that could deadlock if there is a concurrent attempt to
shut down all threads (which is unlikely, but not impossible).

nfsd currently call svc_exit_thread() unprotected in the unlikely event
that unshare_fs_struct() fails.

We can clean this up by introducing svc_thread_init_status() by which an
svc thread can report whether initialisation has succeeded.  If it has,
it continues normally into the action loop.  If it has not,
svc_thread_init_status() immediately aborts the thread.
svc_start_kthread() waits for either of these to happen, and calls
svc_exit_thread() (under the mutex) if the thread aborted.

Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
NeilBrown
59f3b13816 sunrpc: merge svc_rqst_alloc() into svc_prepare_thread()
The only caller of svc_rqst_alloc() is svc_prepare_thread().  So merge
the one into the other and simplify.

Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
NeilBrown
9dcbc4e070 sunrpc: don't take ->sv_lock when updating ->sv_nrthreads.
As documented in svc_xprt.c, sv_nrthreads is protected by the service
mutex, and it does not need ->sv_lock.
(->sv_lock is needed only for sv_permsocks, sv_tempsocks, and
sv_tmpcnt).

So remove the unnecessary locking.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
NeilBrown
60749cbe3d sunrpc: change sp_nrthreads from atomic_t to unsigned int.
sp_nrthreads is only ever accessed under the service mutex
  nlmsvc_mutex nfs_callback_mutex nfsd_mutex
so these is no need for it to be an atomic_t.

The fact that all code using it is single-threaded means that we can
simplify svc_pool_victim and remove the temporary elevation of
sp_nrthreads.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
NeilBrown
16ef80eedc sunrpc: document locking rules for svc_exit_thread()
The locking required for svc_exit_thread() is not obvious, so document
it in a kdoc comment.

Signed-off-by: NeilBrown <neilb@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:31:03 -04:00
NeilBrown
73598a0cfb nfsd: don't allocate the versions array.
Instead of using kmalloc to allocate an array for storing active version
info, just declare an array to the max size - it is only 5 or so.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-20 19:29:23 -04:00
NeilBrown
c9f10f811c nfsd: move nfsd_pool_stats_open into nfsctl.c
nfsd_pool_stats_open() is used in nfsctl.c, so move it there.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-01 10:04:57 -04:00
NeilBrown
f2b27e1d72 SUNRPC: make various functions static, or not exported.
Various functions are only used within the sunrpc module, and several
are only use in the one file.  So clean up:

These are marked static, and any EXPORT is removed.
  svc_rcpb_setup()
  svc_rqst_alloc()
  svc_rqst_free()  - also moved before first use
  svc_rpcbind_set_version()
  svc_drop() - also moved to svc.c

These are now not EXPORTed, but are not static.
  svc_authenticate()
  svc_sock_update_bufs()

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-01 10:04:56 -04:00
NeilBrown
4ed9ef3260 lockd: discard nlmsvc_timeout
nlmsvc_timeout always has the same value as (nlm_timeout * HZ), so use
that in the one place that nlmsvc_timeout is used.

In truth it *might* not always be the same as nlmsvc_timeout is only set
when lockd is started while nlm_timeout can be set at anytime via
sysctl.  I think this difference it not helpful so removing it is good.

Also remove the test for nlm_timout being 0.  This is not possible -
unless a module parameter is used to set the minimum timeout to 0, and
if that happens then it probably should be honoured.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-01 10:04:56 -04:00
NeilBrown
8203ab8a9d nfsd: don't EXPORT_SYMBOL nfsd4_ssc_init_umount_work()
nfsd4_ssc_init_umount_work() is only used in the nfsd module, so there
is no need to EXPORT it.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-01 10:04:56 -04:00
Chen Hanxiao
cef48236df NFS: trace: show TIMEDOUT instead of 0x6e
__nfs_revalidate_inode may return ETIMEDOUT.

print symbol of ETIMEDOUT in nfs trace:

before:
cat-5191 [005] 119.331127: nfs_revalidate_inode_exit: error=-110 (0x6e)

after:
cat-1738 [004] 44.365509: nfs_revalidate_inode_exit: error=-110 (TIMEDOUT)

Signed-off-by: Chen Hanxiao <chenhx.fnst@fujitsu.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-01 10:04:55 -04:00
Youzhong Yang
4b84551a35 nfsd: use system_unbound_wq for nfsd_file_gc_worker()
After many rounds of changes in filecache.c, the fix by commit
ce7df055(NFSD: Make the file_delayed_close workqueue UNBOUND)
is gone, now we are getting syslog messages like these:

[ 1618.186688] workqueue: nfsd_file_gc_worker [nfsd] hogged CPU for >13333us 4 times, consider switching to WQ_UNBOUND
[ 1638.661616] workqueue: nfsd_file_gc_worker [nfsd] hogged CPU for >13333us 8 times, consider switching to WQ_UNBOUND
[ 1665.284542] workqueue: nfsd_file_gc_worker [nfsd] hogged CPU for >13333us 16 times, consider switching to WQ_UNBOUND
[ 1759.491342] workqueue: nfsd_file_gc_worker [nfsd] hogged CPU for >13333us 32 times, consider switching to WQ_UNBOUND
[ 3013.012308] workqueue: nfsd_file_gc_worker [nfsd] hogged CPU for >13333us 64 times, consider switching to WQ_UNBOUND
[ 3154.172827] workqueue: nfsd_file_gc_worker [nfsd] hogged CPU for >13333us 128 times, consider switching to WQ_UNBOUND
[ 3422.461924] workqueue: nfsd_file_gc_worker [nfsd] hogged CPU for >13333us 256 times, consider switching to WQ_UNBOUND
[ 3963.152054] workqueue: nfsd_file_gc_worker [nfsd] hogged CPU for >13333us 512 times, consider switching to WQ_UNBOUND

Consider use system_unbound_wq instead of system_wq for
nfsd_file_gc_worker().

Signed-off-by: Youzhong Yang <youzhong@gmail.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-01 10:04:55 -04:00
Jeff Layton
700bb4ff91 nfsd: count nfsd_file allocations
We already count the frees (via nfsd_file_releases). Count the
allocations as well. Also switch the direct call to nfsd_file_slab_free
in nfsd_file_do_acquire to nfsd_file_free, so that the allocs and
releases match up.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-01 10:04:54 -04:00
Jeff Layton
8a79261763 nfsd: fix refcount leak when file is unhashed after being found
If we wait_for_construction and find that the file is no longer hashed,
and we're going to retry the open, the old nfsd_file reference is
currently leaked. Put the reference before retrying.

Fixes: c6593366c0 ("nfsd: don't kill nfsd_files because of lease break error")
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Tested-by: Youzhong Yang <youzhong@gmail.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-01 10:04:54 -04:00
Jeff Layton
81a95c2b1d nfsd: remove unneeded EEXIST error check in nfsd_do_file_acquire
Given that we do the search and insertion while holding the i_lock, I
don't think it's possible for us to get EEXIST here. Remove this case.

Fixes: c6593366c0 ("nfsd: don't kill nfsd_files because of lease break error")
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Tested-by: Youzhong Yang <youzhong@gmail.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-01 10:04:54 -04:00
Youzhong Yang
8e6e2ffa65 nfsd: add list_head nf_gc to struct nfsd_file
nfsd_file_put() in one thread can race with another thread doing
garbage collection (running nfsd_file_gc() -> list_lru_walk() ->
nfsd_file_lru_cb()):

  * In nfsd_file_put(), nf->nf_ref is 1, so it tries to do nfsd_file_lru_add().
  * nfsd_file_lru_add() returns true (with NFSD_FILE_REFERENCED bit set)
  * garbage collector kicks in, nfsd_file_lru_cb() clears REFERENCED bit and
    returns LRU_ROTATE.
  * garbage collector kicks in again, nfsd_file_lru_cb() now decrements nf->nf_ref
    to 0, runs nfsd_file_unhash(), removes it from the LRU and adds to the dispose
    list [list_lru_isolate_move(lru, &nf->nf_lru, head)]
  * nfsd_file_put() detects NFSD_FILE_HASHED bit is cleared, so it tries to remove
    the 'nf' from the LRU [if (!nfsd_file_lru_remove(nf))]. The 'nf' has been added
    to the 'dispose' list by nfsd_file_lru_cb(), so nfsd_file_lru_remove(nf) simply
    treats it as part of the LRU and removes it, which leads to its removal from
    the 'dispose' list.
  * At this moment, 'nf' is unhashed with its nf_ref being 0, and not on the LRU.
    nfsd_file_put() continues its execution [if (refcount_dec_and_test(&nf->nf_ref))],
    as nf->nf_ref is already 0, nf->nf_ref is set to REFCOUNT_SATURATED, and the 'nf'
    gets no chance of being freed.

nfsd_file_put() can also race with nfsd_file_cond_queue():
  * In nfsd_file_put(), nf->nf_ref is 1, so it tries to do nfsd_file_lru_add().
  * nfsd_file_lru_add() sets REFERENCED bit and returns true.
  * Some userland application runs 'exportfs -f' or something like that, which triggers
    __nfsd_file_cache_purge() -> nfsd_file_cond_queue().
  * In nfsd_file_cond_queue(), it runs [if (!nfsd_file_unhash(nf))], unhash is done
    successfully.
  * nfsd_file_cond_queue() runs [if (!nfsd_file_get(nf))], now nf->nf_ref goes to 2.
  * nfsd_file_cond_queue() runs [if (nfsd_file_lru_remove(nf))], it succeeds.
  * nfsd_file_cond_queue() runs [if (refcount_sub_and_test(decrement, &nf->nf_ref))]
    (with "decrement" being 2), so the nf->nf_ref goes to 0, the 'nf' is added to the
    dispose list [list_add(&nf->nf_lru, dispose)]
  * nfsd_file_put() detects NFSD_FILE_HASHED bit is cleared, so it tries to remove
    the 'nf' from the LRU [if (!nfsd_file_lru_remove(nf))], although the 'nf' is not
    in the LRU, but it is linked in the 'dispose' list, nfsd_file_lru_remove() simply
    treats it as part of the LRU and removes it. This leads to its removal from
    the 'dispose' list!
  * Now nf->ref is 0, unhashed. nfsd_file_put() continues its execution and set
    nf->nf_ref to REFCOUNT_SATURATED.

As shown in the above analysis, using nf_lru for both the LRU list and dispose list
can cause the leaks. This patch adds a new list_head nf_gc in struct nfsd_file, and uses
it for the dispose list. This does not fix the nfsd_file leaking issue completely.

Signed-off-by: Youzhong Yang <youzhong@gmail.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-09-01 10:04:53 -04:00
Linus Torvalds
431c1646e1 Linux 6.11-rc6 2024-09-01 19:46:02 +12:00
Linus Torvalds
6b9ffc4595 four cifs.ko client fixes
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Merge tag 'v6.11-rc5-smb-client-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull smb client fixes from Steve French:

 - copy_file_range fix

 - two read fixes including read past end of file rc fix and read retry
   crediting fix

 - falloc zero range fix

* tag 'v6.11-rc5-smb-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: Fix FALLOC_FL_ZERO_RANGE to preflush buffered part of target region
  cifs: Fix copy offload to flush destination region
  netfs, cifs: Fix handling of short DIO read
  cifs: Fix lack of credit renegotiation on read retry
2024-09-01 15:49:26 +12:00
Linus Torvalds
a4c763129f bcachefs fixes for 6.11-rc6
- Fix a rare data corruption in the rebalance path, caught as a nonce
   inconsistency on encrypted filesystems
 - Revert lockless buffered write path
 - Mark more errors as autofix
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Merge tag 'bcachefs-2024-08-21' of https://github.com/koverstreet/bcachefs

Push bcachefs fixes from Kent Overstreet:
 "The data corruption in the buffered write path is troubling; inode
  lock should not have been able to cause that...

   - Fix a rare data corruption in the rebalance path, caught as a nonce
     inconsistency on encrypted filesystems

   - Revert lockless buffered write path

   - Mark more errors as autofix"

* tag 'bcachefs-2024-08-21' of https://github.com/koverstreet/bcachefs:
  bcachefs: Mark more errors as autofix
  bcachefs: Revert lockless buffered IO path
  bcachefs: Fix bch2_extents_match() false positive
  bcachefs: Fix failure to return error in data_update_index_update()
2024-09-01 15:23:20 +12:00
Kent Overstreet
3d3020c461 bcachefs: Mark more errors as autofix
errors that are known to always be safe to fix should be autofix: this
should be most errors even at this point, but that will need some
thorough review.

note that errors are still logged in the superblock, so we'll still know
that they happened.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-08-31 19:27:01 -04:00
Kent Overstreet
e3e6940940 bcachefs: Revert lockless buffered IO path
We had a report of data corruption on nixos when building installer
images.

https://github.com/NixOS/nixpkgs/pull/321055#issuecomment-2184131334

It seems that writes are being dropped, but only when issued by QEMU,
and possibly only in snapshot mode. It's undetermined if it's write
calls are being dropped or dirty folios.

Further testing, via minimizing the original patch to just the change
that skips the inode lock on non appends/truncates, reveals that it
really is just not taking the inode lock that causes the corruption: it
has nothing to do with the other logic changes for preserving write
atomicity in corner cases.

It's also kernel config dependent: it doesn't reproduce with the minimal
kernel config that ktest uses, but it does reproduce with nixos's distro
config. Bisection the kernel config initially pointer the finger at page
migration or compaction, but it appears that was erroneous; we haven't
yet determined what kernel config option actually triggers it.

Sadly it appears this will have to be reverted since we're getting too
close to release and my plate is full, but we'd _really_ like to fully
debug it.

My suspicion is that this patch is exposing a preexisting bug - the
inode lock actually covers very little in IO paths, and we have a
different lock (the pagecache add lock) that guards against races with
truncate here.

Fixes: 7e64c86cdc ("bcachefs: Buffered write path now can avoid the inode lock")
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2024-08-31 19:26:08 -04:00
Linus Torvalds
6cd90e5ea7 Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull misc fixes from Guenter Roeck.

These are fixes for regressions that Guenther has been reporting, and
the maintainers haven't picked up and sent in. With rc6 fairly imminent,
I'm taking them directly from Guenter.

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  apparmor: fix policy_unpack_test on big endian systems
  Revert "MIPS: csrc-r4k: Apply verification clocksource flags"
  microblaze: don't treat zero reserved memory regions as error
2024-09-01 09:18:48 +12:00
Linus Torvalds
8463be8448 power sequencing fixes for v6.11-rc6
- set the direction of the wlan-enable GPIO to output after requesting
   it as-is
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Merge tag 'pwrseq-fixes-for-v6.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull power sequencing fix from Bartosz Golaszewski:
 "A follow-up fix for the power sequencing subsystem. It turned out the
  previous fix for this driver was incomplete and broke the WLAN support
  on some platforms. This addresses the issue.

   - set the direction of the wlan-enable GPIO to output after
     requesting it as-is"

* tag 'pwrseq-fixes-for-v6.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  power: sequencing: qcom-wcn: set the wlan-enable GPIO to output
2024-09-01 09:07:44 +12:00
Bartosz Golaszewski
d8b762070c power: sequencing: qcom-wcn: set the wlan-enable GPIO to output
Commit a9aaf1ff88 ("power: sequencing: request the WLAN enable GPIO
as-is") broke WLAN on boards on which the wlan-enable GPIO enabling the
wifi module isn't in output mode by default. We need to set direction to
output while retaining the value that was already set to keep the ath
module on if it's already started.

Fixes: a9aaf1ff88 ("power: sequencing: request the WLAN enable GPIO as-is")
Link: https://lore.kernel.org/r/20240823115500.37280-1-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
2024-08-31 21:32:19 +02:00
Linus Torvalds
e8784b0aef USB fixes for 6.11-rc6
Here are some small USB fixes for 6.11-rc6.  Included in here are:
   - dwc3 driver fixes for reported issues
   - MAINTAINER file update, marking a driver as unsupported :(
   - cdnsp driver fixes
   - USB gadget driver fix
   - USB sysfs fix
   - other tiny fixes
   - new device ids for usb serial driver
 
 All of these have been in linux-next this week with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some small USB fixes for 6.11-rc6.  Included in here are:

   - dwc3 driver fixes for reported issues

   - MAINTAINER file update, marking a driver as unsupported :(

   - cdnsp driver fixes

   - USB gadget driver fix

   - USB sysfs fix

   - other tiny fixes

   - new device ids for usb serial driver

  All of these have been in linux-next this week with no reported
  issues"

* tag 'usb-6.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: serial: option: add MeiG Smart SRM825L
  usb: cdnsp: fix for Link TRB with TC
  usb: dwc3: st: add missing depopulate in probe error path
  usb: dwc3: st: fix probed platform device ref count on probe error path
  usb: dwc3: ep0: Don't reset resource alloc flag (including ep0)
  usb: core: sysfs: Unmerge @usb3_hardware_lpm_attr_group in remove_power_attributes()
  usb: typec: fsa4480: Relax CHIP_ID check
  usb: dwc3: xilinx: add missing depopulate in probe error path
  usb: dwc3: omap: add missing depopulate in probe error path
  dt-bindings: usb: microchip,usb2514: Fix reference USB device schema
  usb: gadget: uvc: queue pump work in uvcg_video_enable()
  cdc-acm: Add DISABLE_ECHO quirk for GE HealthCare UI Controller
  usb: cdnsp: fix incorrect index in cdnsp_get_hw_deq function
  usb: dwc3: core: Prevent USB core invalid event buffer address access
  MAINTAINERS: Mark UVC gadget driver as orphan
2024-09-01 07:06:28 +12:00
Linus Torvalds
770b0ffe28 SCSI fixes on 20240831
Minor fixes only.  The sd.c one ignores a sync cache request if format
 is in progress which can happen if formatting a drive across
 suspend/resume.
 
 Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Minor fixes only.

  The sd.c one ignores a sync cache request if format is in progress
  which can happen if formatting a drive across suspend/resume"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: sd: Ignore command SYNCHRONIZE CACHE error if format in progress
  scsi: aacraid: Fix double-free on probe failure
  scsi: lpfc: Fix overflow build issue
2024-09-01 07:00:38 +12:00
Linus Torvalds
6a2fcc51a7 nfsd-6.11 fixes:
- One more write delegation fix
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Merge tag 'nfsd-6.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd fix from Chuck Lever:

 - One more write delegation fix

* tag 'nfsd-6.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
  nfsd: fix nfsd4_deleg_getattr_conflict in presence of third party lease
2024-09-01 06:55:47 +12:00
Linus Torvalds
0efdc09796 Bug fixes for 6.11-rc6:
* Do not call out v1 inodes with non-zero di_nlink field as being corrupt.
   * Change xfs_finobt_count_blocks() to count "free inode btree" blocks rather
     than "inode btree" blocks.
   * Don't report the number of trimmed bytes via FITRIM because the underlying
     storage isn't required to do anything and failed discard IOs aren't
     reported to the caller anyway.
   * Fix incorrect setting of rm_owner field in an rmap query.
   * Report missing disk offset range in an fsmap query.
   * Obtain m_growlock when extending realtime section of the filesystem.
   * Reset rootdir extent size hint after extending realtime section of the
     filesystem.
 
 Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
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Merge tag 'xfs-6.11-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull xfs fixes from Chandan Babu:

 - Do not call out v1 inodes with non-zero di_nlink field as being
   corrupt

 - Change xfs_finobt_count_blocks() to count "free inode btree" blocks
   rather than "inode btree" blocks

 - Don't report the number of trimmed bytes via FITRIM because the
   underlying storage isn't required to do anything and failed discard
   IOs aren't reported to the caller anyway

 - Fix incorrect setting of rm_owner field in an rmap query

 - Report missing disk offset range in an fsmap query

 - Obtain m_growlock when extending realtime section of the filesystem

 - Reset rootdir extent size hint after extending realtime section of
   the filesystem

* tag 'xfs-6.11-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: reset rootdir extent size hint after growfsrt
  xfs: take m_growlock when running growfsrt
  xfs: Fix missing interval for missing_owner in xfs fsmap
  xfs: use XFS_BUF_DADDR_NULL for daddrs in getfsmap code
  xfs: Fix the owner setting issue for rmap query in xfs fsmap
  xfs: don't bother reporting blocks trimmed via FITRIM
  xfs: xfs_finobt_count_blocks() walks the wrong btree
  xfs: fix folio dirtying for XFILE_ALLOC callers
  xfs: fix di_onlink checking for V1/V2 inodes
2024-09-01 06:48:37 +12:00
Linus Torvalds
35667a2969 ARM: SoC fixes for 6.11, part 2
There is a fairly large number of bug fixes for Qualcomm platforms,
 most of them addressing issues with the devicetree files for the
 newly added Snapdragon X1 based laptops to make them more reliable.
 The Qualcomm driver changes address a few build-time issues as well
 as runtime problems in the tzmem and scm firmware, the USB Type-C
 driver, and the cmd-db and pmic_glink soc drivers.
 
 The NXP i.MX usually gets a bunch of devicetree fixes that is proportional
 to the number of supported machines. This includes both warning fixes
 and correctness for the 64-bit i.MX9, i.MX8 and layerscape platforms,
 as well as a single fix for a 32-bit i.MX6 based board.
 
 The other changes are the usual minor changes, including an update to the
 MAINTAINERS file, an omap3 dts file and a SoC driver for mpfs (risc-v).
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Merge tag 'arm-fixes-6.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC fixes from Arnd Bergmann:
 "There is a fairly large number of bug fixes for Qualcomm platforms,
  most of them addressing issues with the devicetree files for the newly
  added Snapdragon X1 based laptops to make them more reliable.

  The Qualcomm driver changes address a few build-time issues as well as
  runtime problems in the tzmem and scm firmware, the USB Type-C driver,
  and the cmd-db and pmic_glink soc drivers.

  The NXP i.MX usually gets a bunch of devicetree fixes that is
  proportional to the number of supported machines. This includes both
  warning fixes and correctness for the 64-bit i.MX9, i.MX8 and
  layerscape platforms, as well as a single fix for a 32-bit i.MX6 based
  board.

  The other changes are the usual minor changes, including an update to
  the MAINTAINERS file, an omap3 dts file and a SoC driver for mpfs
  (risc-v)"

* tag 'arm-fixes-6.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (50 commits)
  firmware: microchip: fix incorrect error report of programming:timeout on success
  soc: qcom: pd-mapper: Fix singleton refcount
  firmware: qcom: tzmem: disable sdm670 platform
  soc: qcom: pmic_glink: Actually communicate when remote goes down
  usb: typec: ucsi: Move unregister out of atomic section
  soc: qcom: pmic_glink: Fix race during initialization
  firmware: qcom: qseecom: remove unused functions
  firmware: qcom: tzmem: fix virtual-to-physical address conversion
  firmware: qcom: scm: Mark get_wq_ctx() as atomic call
  arm64: dts: qcom: x1e80100: Fix Adreno SMMU global interrupt
  arm64: dts: qcom: disable GPU on x1e80100 by default
  arm64: dts: imx8mm-phygate: fix typo pinctrcl-0
  arm64: dts: imx95: correct L3Cache cache-sets
  arm64: dts: imx95: correct a55 power-domains
  arm64: dts: freescale: imx93-tqma9352-mba93xxla: fix typo
  arm64: dts: freescale: imx93-tqma9352: fix CMA alloc-ranges
  ARM: dts: imx6dl-yapp43: Increase LED current to match the yapp4 HW design
  arm64: dts: imx93: update default value for snps,clk-csr
  arm64: dts: freescale: tqma9352: Fix watchdog reset
  arm64: dts: imx8mp-beacon-kit: Fix Stereo Audio on WM8962
  ...
2024-09-01 06:42:13 +12:00
Linus Torvalds
1934261d89 Input updates for v6.11-rc5
- a fix for Cypress PS/2 touchpad for regression introduced in 6.11
   merge window where timeout condition is incorrectly reported for
   all extended Cypress commands.
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Merge tag 'input-for-v6.11-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

Pull input fix from Dmitry Torokhov:

 - a fix for Cypress PS/2 touchpad for regression introduced in 6.11
   merge window where a timeout condition is incorrectly reported for
   all extended Cypress commands

* tag 'input-for-v6.11-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: cypress_ps2 - fix waiting for command response
2024-08-31 15:32:38 +12:00
Linus Torvalds
8101b2766d pci-v6.11-fixes-2
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Merge tag 'pci-v6.11-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci

Pull pci fixes from Bjorn Helgaas:

 - Add Manivannan Sadhasivam as PCI native host bridge and endpoint
   driver reviewer (Manivannan Sadhasivam)

 - Disable MHI RAM data parity error interrupt for qcom SA8775P SoC to
   work around hardware erratum that causes a constant stream of
   interrupts (Manivannan Sadhasivam)

 - Don't try to fall back to qcom Operating Performance Points (OPP)
   support unless the platform actually supports OPP (Manivannan
   Sadhasivam)

 - Add imx@lists.linux.dev mailing list to MAINTAINERS for NXP
   layerscape and imx6 PCI controller drivers (Frank Li)

* tag 'pci-v6.11-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
  MAINTAINERS: PCI: Add NXP PCI controller mailing list imx@lists.linux.dev
  PCI: qcom: Use OPP only if the platform supports it
  PCI: qcom-ep: Disable MHI RAM data parity error interrupt for SA8775P SoC
  MAINTAINERS: Add Manivannan Sadhasivam as Reviewer for PCI native host bridge and endpoint drivers
2024-08-31 14:54:11 +12:00
Linus Torvalds
216d163165 block-6.11-20240830
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Merge tag 'block-6.11-20240830' of git://git.kernel.dk/linux

Pull block fix from Jens Axboe:
 "Fix for a single regression for WRITE_SAME introduced in the 6.11
  merge window"

* tag 'block-6.11-20240830' of git://git.kernel.dk/linux:
  block: fix detection of unsupported WRITE SAME in blkdev_issue_write_zeroes
2024-08-31 13:54:05 +12:00
Linus Torvalds
ad246d9f04 io_uring-6.11-20240830
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Merge tag 'io_uring-6.11-20240830' of git://git.kernel.dk/linux

Pull io_uring fixes from Jens Axboe:

 - A fix for a regression that happened in 6.11 merge window, where the
   copying of iovecs for compat mode applications got broken for certain
   cases.

 - Fix for a bug introduced in 6.10, where if using recv/send bundles
   with classic provided buffers, the recv/send would fail to set the
   right iovec count. This caused 0 byte send/recv results. Found via
   code coverage testing and writing a test case to exercise it.

* tag 'io_uring-6.11-20240830' of git://git.kernel.dk/linux:
  io_uring/kbuf: return correct iovec count from classic buffer peek
  io_uring/rsrc: ensure compat iovecs are copied correctly
2024-08-31 13:51:27 +12:00