ceph: hex dump corrupt server data to KERN_DEBUG

Also, print fsid using standard format, NOT hex dump.

Signed-off-by: Sage Weil <sage@newdream.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/ceph/mdsmap.c b/fs/ceph/mdsmap.c
index cad8d25861e5..c4c498e6dfef 100644
--- 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);
 }