[GFS2] possible null pointer dereference fixup

[firefly-linux-kernel-4.4.55.git] / fs / gfs2 / bmap.c

diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index c1ee6355ced1e9f940129c1620947eaf4fa43fc5..f7093aa69aae93c46f5cf13abf6e5343dfeb82ff 100644 (file)
--- 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)