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authorCyrill Gorcunov <gorcunov@gmail.com>2008-03-03 21:54:21 +0300
committerSteven Whitehouse <swhiteho@redhat.com>2008-03-31 10:41:28 +0100
commit182fe5abd8ebbb3a00c1be91f44e4783e139918c (patch)
tree7404993656166f2b7cb78e54e4275d44336ba27c /fs/gfs2/inode.c
parent105284970ba7d0d0ff4b97e57728eac7adf6a42a (diff)
[GFS2] possible null pointer dereference fixup
gfs2_alloc_get may fail so we have to check it to prevent NULL pointer dereference. Signed-off-by: Cyrill Gorcunov <gorcunov@gamil.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/inode.c')
-rw-r--r--fs/gfs2/inode.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 92ea9afacb1..dcae2aa83f1 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -351,6 +351,8 @@ int gfs2_dinode_dealloc(struct gfs2_inode *ip)
}
al = gfs2_alloc_get(ip);
+ if (!al)
+ return -ENOMEM;
error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
if (error)
@@ -825,7 +827,8 @@ static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
int error;
munge_mode_uid_gid(dip, &mode, &uid, &gid);
- gfs2_alloc_get(dip);
+ if (!gfs2_alloc_get(dip))
+ return -ENOMEM;
error = gfs2_quota_lock(dip, uid, gid);
if (error)
@@ -860,6 +863,8 @@ static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
int error;
al = gfs2_alloc_get(dip);
+ if (!al)
+ return -ENOMEM;
error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
if (error)