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| author | J. Bruce Fields <bfields@redhat.com> | 2014-05-20 15:55:21 -0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2014-05-21 11:11:21 -0400 |
| commit | a1b8ff4c97b4375d21b6d6c45d75877303f61b3b (patch) | |
| tree | 55954eb0fab25dbbd5a1fcec4583993b63f365b0 /fs | |
| parent | 5513a510fad73594e29e1e48e760e0a644a8a4f3 (diff) | |
| download | blackbird-op-linux-a1b8ff4c97b4375d21b6d6c45d75877303f61b3b.tar.gz blackbird-op-linux-a1b8ff4c97b4375d21b6d6c45d75877303f61b3b.zip | |
nfsd4: remove lockowner when removing lock stateid
The nfsv4 state code has always assumed a one-to-one correspondance
between lock stateid's and lockowners even if it appears not to in some
places.
We may actually change that, but for now when FREE_STATEID releases a
lock stateid it also needs to release the parent lockowner.
Symptoms were a subsequent LOCK crashing in find_lockowner_str when it
calls same_lockowner_ino on a lockowner that unexpectedly has an empty
so_stateids list.
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/nfsd/nfs4state.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 32b699bebb9c..89e42409b237 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -3717,9 +3717,16 @@ out: static __be32 nfsd4_free_lock_stateid(struct nfs4_ol_stateid *stp) { - if (check_for_locks(stp->st_file, lockowner(stp->st_stateowner))) + struct nfs4_lockowner *lo = lockowner(stp->st_stateowner); + + if (check_for_locks(stp->st_file, lo)) return nfserr_locks_held; - release_lock_stateid(stp); + /* + * Currently there's a 1-1 lock stateid<->lockowner + * correspondance, and we have to delete the lockowner when we + * delete the lock stateid: + */ + unhash_lockowner(lo); return nfs_ok; } |
