UBI: add dump_stack in checking code

I am experiencing an error in 'paranoid_check_volume()'. Add
dump_stack() there to make it easier to identify the reasons
of the error.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/mtd/ubi/vmt.c b/drivers/mtd/ubi/vmt.c
index 419599d62b29..32c6ceb1a067 100644
--- a/drivers/mtd/ubi/vmt.c
+++ b/drivers/mtd/ubi/vmt.c
@@ -868,6 +868,7 @@ fail:
         if (vol)
                 ubi_dbg_dump_vol_info(vol);
         ubi_dbg_dump_vtbl_record(&ubi->vtbl[vol_id], vol_id);
+        dump_stack();
         spin_unlock(&ubi->volumes_lock);
         return -EINVAL;
 }