A couple of small, but important bug fixes for GFS2. The first one

fixes a possible NULL pointer dereference, and the second one
 resolves a reference counting issue in one of the lesser used paths
 through atomic_open.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.15 (GNU/Linux)
 
 iQIcBAABAgAGBQJSjy+IAAoJEMrg3m4a/8jSy4wP+wXU26Hbj0nIkzxEokxgQLO/
 64flbmRx/960CAEFiFWhrSQUIpb2R2Lw1tNGiRiAhch4wLmRrKMEZnR/dI57KaMR
 /dcm78q2aPbNvdB/5pxrTQx8bkRYcVOCZdD7lizUUHs/oLIhl0IZ4uGSOy0kUdTd
 gcgus1Rd7mPJp+Smr33W7rPB6WAfo6+iAn7RNcdxgRcH2Ng8BZm82Z4Gn8TDN3H1
 cZ8yzFbycLvj67kpkdEesjaDTQv/zWrtNg/ocVDGbPRxykzf89v94LpodZkpvRAz
 vvCT7MNy9R8konDcGImSV6zRstYFtQwg8hqzIvSgla6yppghpGXRp9c7PpPDNzc9
 ynVvZqc0MbZeTlGt5/DQW6QmFKwgJcT/tJSaDdx1NRoHQTOXzSM9hw5it048Hm8L
 AUrsAvFJtTtm7Uwd7CE78IvrOQWNl0EAgw20twKR1GR6dnGmvvaVFrLXSacCNsFm
 VkOs6QLRoax6DbjHgC0ERka5J7YcGniNff+vx2ndRkth3KWv3N8fqh43mBtuQcRN
 yzAffJMXYGWWBHvaXR71dJ35Z4lFbMfKU+oPZokucl9c1dnFJ26cqVKMlhD+hUGK
 ms0qVDiRf4C8qhIyWor1FqWCGeFlXwtTzgGtoovrOoWJxqp6vLdwFjEEPKb1Tlai
 pBmD16Z3ehx8I76Yzgjx
 =aMoW
 -----END PGP SIGNATURE-----

Merge tag 'gfs2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-fixes

Pull GFS2 fixes from Steven Whitehouse:
 "A couple of small, but important bug fixes for GFS2.  The first one
  fixes a possible NULL pointer dereference, and the second one resolves
  a reference counting issue in one of the lesser used paths through
  atomic_open"

* tag 'gfs2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-fixes:
  GFS2: Fix ref count bug relating to atomic_open
  GFS2: fix potential NULL pointer dereference
This commit is contained in:
Linus Torvalds 2013-11-22 08:39:44 -08:00
commit c85e07278e
2 changed files with 6 additions and 2 deletions

View file

@ -1899,7 +1899,8 @@ static int gfs2_glock_iter_next(struct gfs2_glock_iter *gi)
gi->nhash = 0;
}
/* Skip entries for other sb and dead entries */
} while (gi->sdp != gi->gl->gl_sbd || __lockref_is_dead(&gl->gl_lockref));
} while (gi->sdp != gi->gl->gl_sbd ||
__lockref_is_dead(&gi->gl->gl_lockref));
return 0;
}

View file

@ -1171,8 +1171,11 @@ static int gfs2_atomic_open(struct inode *dir, struct dentry *dentry,
if (d != NULL)
dentry = d;
if (dentry->d_inode) {
if (!(*opened & FILE_OPENED))
if (!(*opened & FILE_OPENED)) {
if (d == NULL)
dget(dentry);
return finish_no_open(file, dentry);
}
dput(d);
return 0;
}