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linux/fs/nfs
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Jeff Layton a24221dca1 nfs: fix potential credential leak in ff_layout_update_mirror_cred 
If we have two tasks racing to update a mirror's credentials, then they
can end up leaking one (or more) sets of credentials. The first task
will set mirror->cred and then the second task will just overwrite it.

Use a cmpxchg to ensure that the creds are only set once. If we get to
the point where we would set mirror->cred and find that they're already
set, then we just release the creds that were just found.

Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Cc: stable@vger.kernel.org # 4.0+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2015-06-25 19:34:40 -04:00
..
blocklayout NFSv4.1/pnfs: Separate out metadata and data consistency for pNFS 2015-03-27 12:39:38 -04:00
filelayout NFSv4.1/pnfs: Separate out metadata and data consistency for pNFS 2015-03-27 12:39:38 -04:00
flexfilelayout nfs: fix potential credential leak in ff_layout_update_mirror_cred 2015-06-25 19:34:40 -04:00
objlayout NFSv4.1/pnfs: Separate out metadata and data consistency for pNFS 2015-03-27 12:39:38 -04:00
cache_lib.c
cache_lib.h
callback.c nfs: deny backchannel RPCs with an incorrect authflavor instead of dropping them 2015-06-11 14:06:34 -04:00
callback.h
callback_proc.c NFS: Ensure that we update the sequence id under the slot table lock 2015-06-11 21:15:52 -04:00
callback_xdr.c NFS: Convert use of __constant_htonl to htonl 2015-06-10 18:57:59 -04:00
client.c nfs: Fix showing truncated fsid/dev in, /proc/net/nfsfs/volumes 2015-06-16 11:17:37 -04:00
delegation.c Merge branch 'bugfixes' 2015-04-23 15:16:27 -04:00
delegation.h
dir.c NFS client updates for Linux 4.1 2015-04-26 17:33:59 -07:00
direct.c NFS client updates for Linux 4.1 2015-04-26 17:33:59 -07:00
dns_resolve.c
dns_resolve.h
file.c sunrpc: keep a count of swapfiles associated with the rpc_clnt 2015-06-10 18:26:14 -04:00
fscache-index.c
fscache.c
fscache.h
getroot.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
inode.c NFS: report more appropriate block size for directories. 2015-06-02 08:55:27 -04:00
internal.h NFS: Add attribute update barriers to NFS writebacks 2015-03-01 23:23:06 -05:00
iostat.h
Kconfig kernel: conditionally support non-root users, groups and capabilities 2015-04-15 16:35:22 -07:00
Makefile NFS: Rename idmap.c to nfs4idmap.c 2015-04-23 15:16:14 -04:00
mount_clnt.c
namespace.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
netns.h
nfs.h
nfs2super.c
nfs2xdr.c nfs: save server READ/WRITE/COMMIT status 2015-02-03 11:06:40 -08:00
nfs3_fs.h nfsv3: introduce nfs3_set_ds_client 2015-02-03 11:06:34 -08:00
nfs3acl.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nfs3client.c nfs: set hostname when creating nfsv3 ds connection 2015-02-03 11:06:38 -08:00
nfs3proc.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nfs3super.c nfsv3: introduce nfs3_set_ds_client 2015-02-03 11:06:34 -08:00
nfs3xdr.c NFS: Fix size of NFSACL SETACL operations 2015-06-02 08:55:28 -04:00
nfs4_fs.h Merge branch 'flexfiles' 2015-02-03 16:01:27 -05:00
nfs4client.c NFS client updates for Linux 4.1 2015-04-26 17:33:59 -07:00
nfs4file.c NFS client updates for Linux 4.1 2015-04-26 17:33:59 -07:00
nfs4getroot.c
nfs4idmap.c NFS: drop unneeded goto 2015-06-02 08:55:28 -04:00
nfs4idmap.h NFS: Move nfs_idmap.h into fs/nfs/ 2015-04-23 15:16:14 -04:00
nfs4namespace.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nfs4proc.c Merge branch 'bugfixes' 2015-06-22 09:55:08 -04:00
nfs4renewd.c
nfs4session.c NFSv4.1: Don't set up a backchannel if the server didn't agree to do so 2015-02-18 12:30:47 -08:00
nfs4session.h NFSv4.1: Clear the old state by our client id before establishing a new lease 2015-03-03 21:52:30 -05:00
nfs4state.c NFSv4: Always drain the slot table before re-establishing the lease 2015-06-02 08:55:27 -04:00
nfs4super.c NFS: Move nfs_idmap.h into fs/nfs/ 2015-04-23 15:16:14 -04:00
nfs4sysctl.c NFS: Move nfs_idmap.h into fs/nfs/ 2015-04-23 15:16:14 -04:00
nfs4trace.c
nfs4trace.h VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nfs4xdr.c nfs: update maxsz values for SETCLIENTID and EXCHANGE_ID 2015-06-16 11:15:40 -04:00
nfs42.h
nfs42proc.c NFS: Reduce time spent holding the i_mutex during fallocate() 2015-04-23 14:36:28 -04:00
nfs42xdr.c NFS: Don't zap caches on fallocate() 2015-04-23 14:36:28 -04:00
nfsroot.c NFS: a couple off by ones 2015-01-30 20:43:30 -05:00
nfstrace.c NFSv4: Allow tracing of NFSv4 fsync calls 2015-03-27 12:39:34 -04:00
nfstrace.h
pagelist.c nfs: Fix comment for nfs_pageio_init() and nfs_pageio_complete_mirror() 2015-06-18 08:59:13 -04:00
pnfs.c NFS: Ensure we set NFS_CONTEXT_RESEND_WRITES when requeuing writes 2015-06-17 20:00:42 -04:00
pnfs.h NFS client updates for Linux 4.1 2015-04-26 17:33:59 -07:00
pnfs_dev.c NFSv4.1: Don't cache deviceids that have no notifications 2015-03-27 12:32:24 -04:00
pnfs_nfs.c Merge branch 'bugfixes' 2015-04-23 15:16:27 -04:00
proc.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
read.c NFS client updates for Linux 4.1 2015-04-26 17:33:59 -07:00
super.c NFS client updates for Linux 4.1 2015-04-26 17:33:59 -07:00
symlink.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
sysctl.c
unlink.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
write.c Merge branch 'bugfixes' 2015-06-22 09:55:08 -04:00