[PATCH 10/11] xfsprogs: fix possible null pointer dereference in xfs_iformat_extents

[Vivek Trivedi <t.vivek@xxxxxxxxxxx>]

Fix possible null pointer dereference in xfs_iformat_extents and
xfs_iext_get_ext if fail to locate inode record.
Reported by coverity.

Signed-off-by: Vivek Trivedi <t.vivek@xxxxxxxxxxx>
---
 libxfs/xfs_inode_fork.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libxfs/xfs_inode_fork.c b/libxfs/xfs_inode_fork.c
index e1968b4..36aa0c8 100644
--- a/libxfs/xfs_inode_fork.c
+++ b/libxfs/xfs_inode_fork.c
@@ -331,6 +331,8 @@ xfs_iformat_extents(
                xfs_validate_extents(ifp, nex, XFS_EXTFMT_INODE(ip));
                for (i = 0; i < nex; i++, dp++) {
                        xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, i);
+                       if (!ep)
+                               return -EFSCORRUPTED;
                        ep->l0 = get_unaligned_be64(&dp->l0);
                        ep->l1 = get_unaligned_be64(&dp->l1);
                }
@@ -890,6 +892,8 @@ xfs_iext_get_ext(
                xfs_extnum_t    page_idx = idx; /* ext index in target list */
 
                erp = xfs_iext_idx_to_irec(ifp, &page_idx, &erp_idx, 0);
+               if (!erp)
+                       return NULL;
                return &erp->er_extbuf[page_idx];
        } else if (ifp->if_bytes) {
                return &ifp->if_u1.if_extents[idx];
-- 
1.7.9.5