linux-toradex.git/net/sunrpc, branch v3.4.3

sunrpc: fix loss of task->tk_status after rpc_delay call in xprt_alloc_slot

2012-06-09T15:36:09+00:00

commit 1afeaf5c29aa07db25760d2fbed5c08a3aec3498 upstream.

xprt_alloc_slot will call rpc_delay() to make the task wait a bit before
retrying when it gets back an -ENOMEM error from xprt_dynamic_alloc_slot.
The problem is that rpc_delay will clear the task->tk_status, causing
call_reserveresult to abort the task.

The solution is simply to let call_reserveresult handle the ENOMEM error
directly.

Reported-by: Jeff Layton 
Signed-off-by: Trond Myklebust 
Signed-off-by: Greg Kroah-Hartman

auth_gss: the list of pseudoflavors not being parsed correctly

2012-05-03T16:35:33+00:00

gss_mech_list_pseudoflavors() parses a list of registered mechanisms.
On that list contains a list of pseudo flavors which was not being
parsed correctly, causing only the first pseudo flavor to be found.

Signed-off-by: Steve Dickson 
Signed-off-by: Trond Myklebust

SUNRPC: RPC client must use the current utsname hostname string

2012-04-30T15:58:51+00:00

Now that the rpc client is namespace aware, it needs to use the
utsname of the process that created it instead of using the
init_utsname. Both rpc_new_client and rpc_clone_client need to
be fixed.

Signed-off-by: Trond Myklebust 
Cc: Stanislav Kinsbursky

SUNRPC: traverse clients tree on PipeFS event

2012-04-27T18:10:00+00:00

v2: recursion was replaced by loop

If client is a clone, then it's parent can not be in the list.
But parent's Pipefs dentries have to be created and destroyed.

Note: event skip helper for clients introduced

Signed-off-by: Stanislav Kinsbursky 
Signed-off-by: Trond Myklebust

SUNRPC: set per-net PipeFS superblock before notification

2012-04-27T18:10:00+00:00

There can be a case, when on MOUNT event RPC client (after it's dentries were
created) is not longer hold by anyone except notification callback.
I.e. on release this client will be destoroyed. And it's dentries have to be
destroyed as well. Which in turn requires per-net PipeFS superblock to be set.

Signed-off-by: Stanislav Kinsbursky 
Signed-off-by: Trond Myklebust

SUNRPC: skip clients with program without PipeFS entries

2012-04-27T18:09:59+00:00

1) This is sane.
2) Otherwise there will be soft lockup:

do {
	rpc_get_client_for_event (clnt->cl_dentry == NULL ==> choose)
	__rpc_pipefs_event (clnt->cl_program->pipe_dir_name == NULL ==> return)
} while (1)

Signed-off-by: Stanislav Kinsbursky 
Signed-off-by: Trond Myklebust

SUNRPC: skip dead but not buried clients on PipeFS events

2012-04-27T18:09:59+00:00

These clients can't be safely dereferenced if their counter in 0.

Signed-off-by: Stanislav Kinsbursky 
Signed-off-by: Trond Myklebust

SUNRPC: register PipeFS file system after pernet sybsystem

2012-04-18T15:05:48+00:00

PipeFS superblock creation routine relays on SUNRPC pernet data presense, which
is created on register_pernet_subsys() call in SUNRPC module init function.
Registering of PipeFS filesystem prior to registering of per-net subsystem
leads to races (mount of PipeFS can dereference uninitialized data).

Signed-off-by: Stanislav Kinsbursky 
Signed-off-by: Trond Myklebust

Merge branch 'for-3.4' of git://linux-nfs.org/~bfields/linux

2012-03-29T21:53:25+00:00

Pull nfsd changes from Bruce Fields:

Highlights:
 - Benny Halevy and Tigran Mkrtchyan implemented some more 4.1 features,
   moving us closer to a complete 4.1 implementation.
 - Bernd Schubert fixed a long-standing problem with readdir cookies on
   ext2/3/4.
 - Jeff Layton performed a long-overdue overhaul of the server reboot
   recovery code which will allow us to deprecate the current code (a
   rather unusual user of the vfs), and give us some needed flexibility
   for further improvements.
 - Like the client, we now support numeric uid's and gid's in the
   auth_sys case, allowing easier upgrades from NFSv2/v3 to v4.x.

Plus miscellaneous bugfixes and cleanup.

Thanks to everyone!

There are also some delegation fixes waiting on vfs review that I
suppose will have to wait for 3.5.  With that done I think we'll finally
turn off the "EXPERIMENTAL" dependency for v4 (though that's mostly
symbolic as it's been on by default in distro's for a while).

And the list of 4.1 todo's should be achievable for 3.5 as well:

   http://wiki.linux-nfs.org/wiki/index.php/Server_4.0_and_4.1_issues

though we may still want a bit more experience with it before turning it
on by default.

* 'for-3.4' of git://linux-nfs.org/~bfields/linux: (55 commits)
  nfsd: only register cld pipe notifier when CONFIG_NFSD_V4 is enabled
  nfsd4: use auth_unix unconditionally on backchannel
  nfsd: fix NULL pointer dereference in cld_pipe_downcall
  nfsd4: memory corruption in numeric_name_to_id()
  sunrpc: skip portmap calls on sessions backchannel
  nfsd4: allow numeric idmapping
  nfsd: don't allow legacy client tracker init for anything but init_net
  nfsd: add notifier to handle mount/unmount of rpc_pipefs sb
  nfsd: add the infrastructure to handle the cld upcall
  nfsd: add a header describing upcall to nfsdcld
  nfsd: add a per-net-namespace struct for nfsd
  sunrpc: create nfsd dir in rpc_pipefs
  nfsd: add nfsd4_client_tracking_ops struct and a way to set it
  nfsd: convert nfs4_client->cl_cb_flags to a generic flags field
  NFSD: Fix nfs4_verifier memory alignment
  NFSD: Fix warnings when NFSD_DEBUG is not defined
  nfsd: vfs_llseek() with 32 or 64 bit offsets (hashes)
  nfsd: rename 'int access' to 'int may_flags' in nfsd_open()
  ext4: return 32/64-bit dir name hash according to usage type
  fs: add new FMODE flags: FMODE_32bithash and FMODE_64bithash
  ...

Merge tag 'nfs-for-3.4-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

2012-03-29T02:02:35+00:00

Pull NFS client bugfixes for Linux 3.4 from Trond Myklebust

Highlights include:
- Fix infinite loops in the mount code
- Fix a userspace buffer overflow in __nfs4_get_acl_uncached
- Fix a memory leak due to a double reference count in rpcb_getport_async()

Signed-off-by: Trond Myklebust 

* tag 'nfs-for-3.4-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFSv4: Minor cleanups for nfs4_handle_exception and nfs4_async_handle_error
  NFSv4.1: Fix layoutcommit error handling
  NFSv4: Fix two infinite loops in the mount code
  SUNRPC: Use the already looked-up xprt in rpcb_getport_async()
  NFS4.1: remove duplicate variable declaration in filelayout_clear_request_commit
  Fix length of buffer copied in __nfs4_get_acl_uncached