cifs dmesg

[224317.585496] CIFS VFS: Server 172.16.117.5 has not responded in 120 seconds. Reconnecting...
[224618.638844] INFO: task python:24208 blocked for more than 120 seconds.
[224618.638876]       Not tainted 3.13.0-33-generic #58-Ubuntu
[224618.638895] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[224618.638921] python          D ffff88027fc14440     0 24208  24199 0x00000000
[224618.638925]  ffff88026e52fac0 0000000000000002 ffff88009e1417f0 ffff88026e52ffd8
[224618.638928]  0000000000014440 0000000000014440 ffff88009e1417f0 ffff88003687d220
[224618.638930]  ffff88003687d224 ffff88009e1417f0 00000000ffffffff ffff88003687d228
[224618.638932] Call Trace:
[224618.638940]  [<ffffffff81720649>] schedule_preempt_disabled+0x29/0x70
[224618.638943]  [<ffffffff817224b5>] __mutex_lock_slowpath+0x135/0x1b0
[224618.638965]  [<ffffffff8172254f>] mutex_lock+0x1f/0x2f
[224618.638988]  [<ffffffffa009739b>] cifs_reconnect_tcon+0x15b/0x2e0 [cifs]
[224618.638995]  [<ffffffffa00975da>] smb_init+0x2a/0x50 [cifs]
[224618.639002]  [<ffffffffa009d16a>] CIFSSMBQPathInfo+0x5a/0x250 [cifs]
[224618.639005]  [<ffffffff812d369c>] ? security_inode_permission+0x1c/0x30
[224618.639014]  [<ffffffffa00c12bb>] cifs_query_path_info+0x4b/0x140 [cifs]
[224618.639017]  [<ffffffff81365a2e>] ? radix_tree_lookup_slot+0xe/0x10
[224618.639021]  [<ffffffff811a1dcc>] ? kmem_cache_alloc_trace+0x3c/0x1f0
[224618.639032]  [<ffffffffa00b303c>] ? cifs_get_inode_info+0x28c/0x8c0 [cifs]
[224618.639037]  [<ffffffffa00b309a>] cifs_get_inode_info+0x2ea/0x8c0 [cifs]
[224618.639041]  [<ffffffff811c6c9d>] ? complete_walk+0x4d/0xe0
[224618.639043]  [<ffffffff811a1735>] ? __kmalloc+0x55/0x230
[224618.639048]  [<ffffffffa00a86de>] ? build_path_from_dentry+0xae/0x2a0 [cifs]
[224618.639052]  [<ffffffffa00a86de>] ? build_path_from_dentry+0xae/0x2a0 [cifs]
[224618.639057]  [<ffffffffa00b4f0f>] cifs_revalidate_dentry_attr+0xef/0x1c0 [cifs]
[224618.639062]  [<ffffffffa00b50b7>] cifs_getattr+0x57/0x130 [cifs]
[224618.639067]  [<ffffffff8131144b>] ? common_perm_cond+0x2b/0x30
[224618.639069]  [<ffffffff811c1749>] vfs_getattr_nosec+0x29/0x40
[224618.639070]  [<ffffffff811c181d>] vfs_getattr+0x2d/0x40
[224618.639072]  [<ffffffff811c18f2>] vfs_fstatat+0x62/0xa0
[224618.639073]  [<ffffffff811c1d7f>] SYSC_newstat+0x1f/0x40
[224618.639077]  [<ffffffff81020d45>] ? syscall_trace_enter+0x145/0x250
[224618.639079]  [<ffffffff8172c89c>] ? tracesys+0x7e/0xe6
[224618.639081]  [<ffffffff811c1fce>] SyS_newstat+0xe/0x10
[224618.639083]  [<ffffffff8172c8ff>] tracesys+0xe1/0xe6