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authorTrond Myklebust <Trond.Myklebust@netapp.com>2005-12-19 17:11:25 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2005-12-19 23:12:31 -0500
commit9b5b1f5bf9dcdb6f23abf65977a675eb4deba3c0 (patch)
tree2f7f341d38d6a8ae71ff1fefa9e48a467b34f5a1 /fs/lockd/clntlock.c
parent48e49187753ec3b4fa84a7165c9b7a59f3875b56 (diff)
downloadblackbird-op-linux-9b5b1f5bf9dcdb6f23abf65977a675eb4deba3c0.tar.gz
blackbird-op-linux-9b5b1f5bf9dcdb6f23abf65977a675eb4deba3c0.zip
NLM: Fix Oops in nlmclnt_mark_reclaim()
When mixing -olock and -onolock mounts on the same client, we have to check that fl->fl_u.nfs_fl.owner is set before dereferencing it. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/lockd/clntlock.c')
-rw-r--r--fs/lockd/clntlock.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/lockd/clntlock.c b/fs/lockd/clntlock.c
index 006bb9e14579..3eaf6e701087 100644
--- a/fs/lockd/clntlock.c
+++ b/fs/lockd/clntlock.c
@@ -157,6 +157,8 @@ void nlmclnt_mark_reclaim(struct nlm_host *host)
inode = fl->fl_file->f_dentry->d_inode;
if (inode->i_sb->s_magic != NFS_SUPER_MAGIC)
continue;
+ if (fl->fl_u.nfs_fl.owner == NULL)
+ continue;
if (fl->fl_u.nfs_fl.owner->host != host)
continue;
if (!(fl->fl_u.nfs_fl.flags & NFS_LCK_GRANTED))
@@ -226,6 +228,8 @@ restart:
inode = fl->fl_file->f_dentry->d_inode;
if (inode->i_sb->s_magic != NFS_SUPER_MAGIC)
continue;
+ if (fl->fl_u.nfs_fl.owner == NULL)
+ continue;
if (fl->fl_u.nfs_fl.owner->host != host)
continue;
if (!(fl->fl_u.nfs_fl.flags & NFS_LCK_RECLAIM))
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