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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/bmap.c
parent105284970ba7d0d0ff4b97e57728eac7adf6a42a (diff)
downloadop-kernel-dev-182fe5abd8ebbb3a00c1be91f44e4783e139918c.zip
op-kernel-dev-182fe5abd8ebbb3a00c1be91f44e4783e139918c.tar.gz
[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/bmap.c')
-rw-r--r--fs/gfs2/bmap.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index c1ee635..f7093aa 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -900,6 +900,8 @@ static int do_grow(struct gfs2_inode *ip, u64 size)
int error;
al = gfs2_alloc_get(ip);
+ if (!al)
+ return -ENOMEM;
error = gfs2_quota_lock(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
if (error)
@@ -1081,7 +1083,8 @@ static int trunc_dealloc(struct gfs2_inode *ip, u64 size)
lblock = (size - 1) >> sdp->sd_sb.sb_bsize_shift;
find_metapath(sdp, lblock, &mp, ip->i_height);
- gfs2_alloc_get(ip);
+ if (!gfs2_alloc_get(ip))
+ return -ENOMEM;
error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
if (error)
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