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linux/fs/nfs
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Trond Myklebust cb2c6fdf62 NFSv4.1: Fix a race in nfs4_proc_layoutget 
commit bd171930e6 upstream.

If the task calling layoutget is signalled, then it is possible for the
calls to nfs4_sequence_free_slot() and nfs4_layoutget_prepare() to race,
in which case we leak a slot.
The fix is to move the call to nfs4_sequence_free_slot() into the
nfs4_layoutget_release() so that it gets called at task teardown time.

Fixes: 2e80dbe7ac ("NFSv4.1: Close callback races for OPEN, LAYOUTGET...")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2017-07-05 14:40:18 +02:00
..
blocklayout pnfs/blocklayout: fix last_write_offset incorrectly set to page boundary 2016-10-13 16:42:53 -04:00
filelayout NFSv4.1: nfs4_fl_prepare_ds must be careful about reporting success. 2017-01-19 20:18:05 +01:00
flexfilelayout pNFS/flexfiles: If the layout is invalid, it must be updated before retrying 2017-03-12 06:41:51 +01:00
objlayout mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
cache_lib.c NFS: cache_lib: use complete() instead of complete_all() 2016-09-23 09:40:12 -04:00
cache_lib.h NFS: simplify and clean cache library 2013-02-15 10:43:36 -05:00
callback.c NFSv4.x/callback: Create the callback service through svc_create_pooled 2017-07-05 14:40:16 +02:00
callback.h nfs: add handling for CB_NOTIFY_LOCK in client 2016-09-22 13:56:04 -04:00
callback_proc.c nfs: allow blocking locks to be awoken by lock callbacks 2016-09-22 15:54:27 -04:00
callback_xdr.c nfs: add handling for CB_NOTIFY_LOCK in client 2016-09-22 13:56:04 -04:00
client.c NFS: Ignore connections that have cl_rpcclient uninitialized 2016-11-07 16:11:29 -05:00
delegation.c NFS: Always call nfs_inode_find_state_and_recover() when revoking a delegation 2016-09-27 14:35:04 -04:00
delegation.h NFSv4: nfs_inode_find_state_and_recover() should check all stateids 2016-09-27 14:34:35 -04:00
dir.c NFS: Fix a performance regression in readdir 2017-01-19 20:18:05 +01:00
direct.c NFS: direct: use complete() instead of complete_all() 2016-09-23 09:14:16 -04:00
dns_resolve.c NFS: Enabling v4.2 should not recompile nfsd and lockd 2013-11-19 16:20:40 -05:00
dns_resolve.h NFS: DNS resolver cache per network namespace context introduced 2012-01-31 18:20:26 -05:00
file.c nfs_write_end(): fix handling of short copies 2017-01-09 08:32:24 +01:00
fscache-index.c NFS: Fabricate fscache server index key correctly 2014-09-25 21:25:18 -04:00
fscache.c nfs: define nfs_inc_fscache_stats and using it as possible 2014-11-24 20:08:47 -05:00
fscache.h NFS: Use i_writecount to control whether to get an fscache cookie in nfs_open() 2013-09-27 18:40:25 +01:00
getroot.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
inode.c pNFS: Actively set attributes as invalid if LAYOUTCOMMIT is outstanding 2016-07-28 14:49:08 -04:00
internal.h NFS client updates for Linux 4.9 2016-10-13 21:28:20 -07:00
io.c NFS: Do not serialise O_DIRECT reads and writes 2016-07-05 19:11:04 -04:00
iostat.h nfs: define nfs_inc_fscache_stats and using it as possible 2014-11-24 20:08:47 -05:00
Kconfig kernel: conditionally support non-root users, groups and capabilities 2015-04-15 16:35:22 -07:00
Makefile NFS: Do not serialise O_DIRECT reads and writes 2016-07-05 19:11:04 -04:00
mount_clnt.c NFS: Remove unneeded NFS_DEBUG checking before define NFSDBG_FACILITY 2015-10-21 15:49:23 -05:00
namespace.c fs: Better permission checking for submounts 2017-03-15 10:02:44 +08:00
netns.h fs: nfs: Make nfs boot time y2038 safe 2016-10-04 16:20:26 -04:00
nfs.h NFS: Convert v4 into a module 2012-07-30 19:06:52 -04:00
nfs2super.c NFS: Convert v2 into a module 2012-07-30 19:06:41 -04:00
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 posix_acl: Inode acl caching fixes 2016-03-31 00:30:15 -04:00
nfs3client.c nfs4: flexfiles: respect noresvport when establishing connections to DSes 2016-07-19 16:23:25 -04:00
nfs3proc.c vfs: Remove {get,set,remove}xattr inode operations 2016-10-07 21:48:36 -04:00
nfs3super.c nfsv3: introduce nfs3_set_ds_client 2015-02-03 11:06:34 -08:00
nfs3xdr.c xprtrdma: Fix large NFS SYMLINK calls 2015-08-05 16:21:28 -04:00
nfs4_fs.h NFSv4: Fix CLOSE races with OPEN 2016-11-18 13:35:58 -05:00
nfs4client.c nfs: allow blocking locks to be awoken by lock callbacks 2016-09-22 15:54:27 -04:00
nfs4file.c switch generic_file_splice_read() to use of ->read_iter() 2016-10-05 18:23:56 -04:00
nfs4getroot.c nfs: Remove invalid NFS_ATTR_FATTR_V4_REFERRAL checking in nfs4_get_rootfh 2015-07-01 11:31:22 -04:00
nfs4idmap.c KEYS: Add a facility to restrict new links into a keyring 2016-04-11 22:37:37 +01:00
nfs4idmap.h NFS: Move nfs_idmap.h into fs/nfs/ 2015-04-23 15:16:14 -04:00
nfs4namespace.c fs: Better permission checking for submounts 2017-03-15 10:02:44 +08:00
nfs4proc.c NFSv4.1: Fix a race in nfs4_proc_layoutget 2017-07-05 14:40:18 +02:00
nfs4renewd.c NFSv4: Cap the transport reconnection timer at 1/2 lease period 2016-08-05 19:22:22 -04:00
nfs4session.c fs/nfs: Fix used uninitialized warn in nfs4_slot_seqid_in_use() 2016-11-07 16:11:30 -05:00
nfs4session.h NFSv4.1: Don't deadlock the state manager on the SEQUENCE status flags 2016-09-27 14:31:27 -04:00
nfs4state.c nfs: Fix "Don't increment lock sequence ID after NFS4ERR_MOVED" 2017-06-17 06:41:55 +02:00
nfs4super.c NFS: Move nfs_idmap.h into fs/nfs/ 2015-04-23 15:16:14 -04:00
nfs4sysctl.c nfs: do not initialise statics to 0 2015-12-28 09:57:15 -05:00
nfs4trace.c pNFS: Modify pnfs_update_layout tracepoints to use layout stateid 2015-12-28 09:57:14 -05:00
nfs4trace.h tracing: Use __get_str() when manipulating strings 2016-07-15 15:52:20 -04:00
nfs4xdr.c NFSv4: fix getacl head length estimation 2017-03-12 06:41:51 +01:00
nfs42.h NFS: Add COPY nfs operation 2016-05-17 15:47:55 -04:00
nfs42proc.c NFSv4: Fix reboot recovery in copy offload 2017-03-12 06:41:51 +01:00
nfs42xdr.c NFSv4.2: Fix warning "variable ‘stateids’ set but not used" 2016-07-24 17:36:06 -04:00
nfsroot.c nfsroot: make nfsroot to accept the 1024 bytes long directory name 2015-10-21 15:49:19 -05:00
nfstrace.c NFSv4: Allow tracing of NFSv4 fsync calls 2015-03-27 12:39:34 -04:00
nfstrace.h NFS client updates for Linux 4.8 2016-07-30 16:33:25 -07:00
pagelist.c NFS: Use GFP_NOIO for two allocations in writeback 2017-05-25 15:44:48 +02:00
pnfs.c pNFS: Fix race in pnfs_wait_on_layoutreturn 2017-01-19 20:18:05 +01:00
pnfs.h pNFS: On error, do not send LAYOUTGET until the LAYOUTRETURN has completed 2017-01-09 08:32:24 +01:00
pnfs_dev.c NFSv4.1: Don't cache deviceids that have no notifications 2015-03-27 12:32:24 -04:00
pnfs_nfs.c NFS pnfs data server multipath session trunking 2016-09-19 13:08:37 -04:00
proc.c fs: rename "rename2" i_op to "rename" 2016-09-27 11:03:58 +02:00
read.c mm: remove page_file_index 2016-10-07 18:46:28 -07:00
super.c NFS: fix typo in parameter description 2017-01-19 20:18:05 +01:00
symlink.c switch ->get_link() to delayed_call, kill ->put_link() 2015-12-30 13:01:03 -05:00
sysctl.c nfs: convert use of typedef ctl_table to struct ctl_table 2014-06-06 16:08:16 -07:00
unlink.c qstr: constify instances in nfs 2016-07-20 23:30:06 -04:00
write.c NFS: Fix use after free in write error path 2017-05-25 15:44:48 +02:00