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

Browse source 
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.
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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
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3
fs/gfs2/glock.c
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;
}

5
fs/gfs2/inode.c
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;
}