ceph: hex dump corrupt server data to KERN_DEBUG

[linux-2.6-block.git] / fs / ceph / mdsmap.c

diff --git a/fs/ceph/mdsmap.c b/fs/ceph/mdsmap.c
index cad8d25861e5d52290e3533f83d0859170539a26..c4c498e6dfefe50668f0575df203e11b93e6294c 100644 (file)
--- a/fs/ceph/mdsmap.c
+++ b/fs/ceph/mdsmap.c
@@ -49,6 +49,7 @@ int ceph_mdsmap_get_random_mds(struct ceph_mdsmap *m)
 struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
 {
        struct ceph_mdsmap *m;
+       const void *start = *p;
        int i, j, n;
        int err = -EINVAL;
        u16 version;
@@ -154,6 +155,9 @@ badmem:
        err = -ENOMEM;
 bad:
        pr_err("corrupt mdsmap\n");
+       print_hex_dump(KERN_DEBUG, "mdsmap: ",
+                      DUMP_PREFIX_OFFSET, 16, 1,
+                      start, end - start, true);
        ceph_mdsmap_destroy(m);
        return ERR_PTR(-EINVAL);
 }