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Chuck Lever 1047ec8683 NFSv4: Fix leak of clp->cl_acceptor string 
Our client can issue multiple SETCLIENTID operations to the same
server in some circumstances. Ensure that calls to
nfs4_proc_setclientid() after the first one do not overwrite the
previously allocated cl_acceptor string.

unreferenced object 0xffff888461031800 (size 32):
  comm "mount.nfs", pid 2227, jiffies 4294822467 (age 1407.749s)
  hex dump (first 32 bytes):
    6e 66 73 40 6b 6c 69 6d 74 2e 69 62 2e 31 30 31  nfs@klimt.ib.101
    35 67 72 61 6e 67 65 72 2e 6e 65 74 00 00 00 00  5granger.net....
  backtrace:
    [<00000000ab820188>] __kmalloc+0x128/0x176
    [<00000000eeaf4ec8>] gss_stringify_acceptor+0xbd/0x1a7 [auth_rpcgss]
    [<00000000e85e3382>] nfs4_proc_setclientid+0x34e/0x46c [nfsv4]
    [<000000003d9cf1fa>] nfs40_discover_server_trunking+0x7a/0xed [nfsv4]
    [<00000000b81c3787>] nfs4_discover_server_trunking+0x81/0x244 [nfsv4]
    [<000000000801b55f>] nfs4_init_client+0x1b0/0x238 [nfsv4]
    [<00000000977daf7f>] nfs4_set_client+0xfe/0x14d [nfsv4]
    [<0000000053a68a2a>] nfs4_create_server+0x107/0x1db [nfsv4]
    [<0000000088262019>] nfs4_remote_mount+0x2c/0x59 [nfsv4]
    [<00000000e84a2fd0>] legacy_get_tree+0x2d/0x4c
    [<00000000797e947c>] vfs_get_tree+0x20/0xc7
    [<00000000ecabaaa8>] fc_mount+0xe/0x36
    [<00000000f15fafc2>] vfs_kern_mount+0x74/0x8d
    [<00000000a3ff4e26>] nfs_do_root_mount+0x8a/0xa3 [nfsv4]
    [<00000000d1c2b337>] nfs4_try_mount+0x58/0xad [nfsv4]
    [<000000004c9bddee>] nfs_fs_mount+0x820/0x869 [nfs]

Fixes: f11b2a1cfbf5 ("nfs4: copy acceptor name from context ... ")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2019-10-10 16:14:02 -04:00
..
blocklayout
…
filelayout
pNFS/filelayout: enable LAYOUTGET on OPEN
2019-09-24 16:28:38 -04:00
flexfilelayout
pNFS/flexfiles: Don't time out requests on hard mounts
2019-08-26 15:31:29 -04:00
cache_lib.c
…
cache_lib.h
…
callback_proc.c
NFS4: Add a trace event to record invalid CB sequence IDs
2019-07-09 10:30:25 -04:00
callback_xdr.c
…
callback.c
…
callback.h
…
client.c
NFS: Cleanup if nfs_match_client is interrupted
2019-07-06 14:54:53 -04:00
delegation.c
NFSv4.1: Only reap expired delegations
2019-08-04 22:35:40 -04:00
delegation.h
NFSv4: Fix delegation state recovery
2019-08-04 22:35:40 -04:00
dir.c
NFS Client Updates for Linux 5.3
2019-09-26 12:20:14 -07:00
direct.c
NFS: Remove redundant mirror tracking in O_DIRECT
2019-10-09 11:45:59 -04:00
dns_resolve.c
keys: Pass the network namespace into request_key mechanism
2019-06-27 23:02:12 +01:00
dns_resolve.h
…
export.c
…
file.c
…
fscache-index.c
…
fscache.c
NFS: Fix regression whereby fscache errors are appearing on 'nofsc' mounts
2019-08-04 22:35:41 -04:00
fscache.h
NFS: Fix regression whereby fscache errors are appearing on 'nofsc' mounts
2019-08-04 22:35:41 -04:00
getroot.c
…
inode.c
NFS: Fix inode fileid checks in attribute revalidation code
2019-09-02 13:10:19 -04:00
internal.h
NFS Client Updates for Linux 5.3
2019-09-26 12:20:14 -07:00
io.c
…
iostat.h
…
Kconfig
…
Makefile
NFS: Create a root NFS directory in /sys/fs/nfs
2019-07-06 14:54:49 -04:00
mount_clnt.c
…
namespace.c
…
netns.h
NFS: Add sysfs support for per-container identifier
2019-07-06 14:54:49 -04:00
nfs2super.c
…
nfs2xdr.c
NFS: Record task, client ID, and XID in xdr_status trace points
2019-07-09 10:30:25 -04:00
nfs3_fs.h
…
nfs3acl.c
…
nfs3client.c
pNFS: Allow multiple connections to the DS
2019-07-06 14:54:50 -04:00
nfs3proc.c
NFSv3: use nfs_add_or_obtain() to create and reference inodes
2019-09-20 15:15:24 -04:00
nfs3super.c
…
nfs3xdr.c
NFS: Record task, client ID, and XID in xdr_status trace points
2019-07-09 10:30:25 -04:00
nfs4_fs.h
NFSv4: Handle NFS4ERR_OLD_STATEID in CLOSE/OPEN_DOWNGRADE
2019-09-20 15:56:19 -04:00
nfs4client.c
NFSv4: Fix a potential sleep while atomic in nfs4_do_reclaim()
2019-08-04 22:35:40 -04:00
nfs4file.c
NFSv4: Fix return values for nfs4_file_open()
2019-08-19 08:56:04 -04:00
nfs4getroot.c
…
nfs4idmap.c
Revert "Merge tag 'keys-acl-20190703' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs"
2019-07-10 18:43:43 -07:00
nfs4idmap.h
…
nfs4namespace.c
…
nfs4proc.c
NFSv4: Fix leak of clp->cl_acceptor string
2019-10-10 16:14:02 -04:00
nfs4renewd.c
…
nfs4session.c
…
nfs4session.h
…
nfs4state.c
NFSv4: Handle NFS4ERR_OLD_STATEID in CLOSE/OPEN_DOWNGRADE
2019-09-20 15:56:19 -04:00
nfs4super.c
…
nfs4sysctl.c
…
nfs4trace.c
pnfs/flexfiles: Add tracepoints for detecting pnfs fallback to MDS
2019-07-18 15:50:28 -04:00
nfs4trace.h
pnfs/flexfiles: Add tracepoints for detecting pnfs fallback to MDS
2019-07-18 15:50:28 -04:00
nfs4xdr.c
fs: nfs: Fix possible null-pointer dereferences in encode_attrs()
2019-08-20 09:30:50 -04:00
nfs42.h
…
nfs42proc.c
…
nfs42xdr.c
…
nfs.h
…
nfsroot.c
…
nfstrace.c
…
nfstrace.h
kill LOOKUP_NO_EVAL, don't bother including namei.h from audit.h
2019-08-30 21:29:32 -04:00
pagelist.c
NFS: Fix initialisation of I/O result struct in nfs_pgio_rpcsetup
2019-08-19 08:56:04 -04:00
pnfs_dev.c
…
pnfs_nfs.c
pNFS/flexfiles: Turn off soft RPC calls
2019-08-26 15:31:29 -04:00
pnfs.c
pNFS: Handle NFS4ERR_OLD_STATEID on layoutreturn by bumping the state seqid
2019-09-20 15:48:35 -04:00
pnfs.h
pNFS: Handle NFS4ERR_OLD_STATEID on layoutreturn by bumping the state seqid
2019-09-20 15:48:35 -04:00
proc.c
NFSv2: Fix write regression
2019-08-27 10:24:56 -04:00
read.c
NFS: Fix spurious EIO read errors
2019-08-26 15:31:29 -04:00
super.c
NFS Client Updates for Linux 5.3
2019-09-26 12:20:14 -07:00
symlink.c
…
sysctl.c
…
sysfs.c
NFS: Add sysfs support for per-container identifier
2019-07-06 14:54:49 -04:00
sysfs.h
NFS: Add sysfs support for per-container identifier
2019-07-06 14:54:49 -04:00
unlink.c
…
write.c
nfs: Fix nfsi->nrequests count error on nfs_inode_remove_request
2019-10-02 08:52:17 -04:00