mount.cifs fails with trace report in syslog

[William Liao]

==============

Description: Ubuntu 14.04.2 LTS
Release: 14.04

===============

cifs-utils:
  Installed: 2:6.0-1ubuntu2
  Candidate: 2:6.0-1ubuntu2
  Version table:
 *** 2:6.0-1ubuntu2 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status

================

This command

sudo mount.cifs //192.168.32.119/storage /mnt/storage -o user=wliao,noperm

generates this output in the terminal

Password for wliao@//192.168.32.119/storage:
mount error(5): Input/output error
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

When I checked the syslog, I found

Jul 11 19:51:25 nancy kernel: [ 4839.896850] ------------[ cut here ]------------
Jul 11 19:51:25 nancy kernel: [ 4839.896867] WARNING: CPU: 3 PID: 14940 at /build/buildd/linux-3.13.0/fs/cifs/transport.c:313 smb_send_rqst+0x215/0x270 [cifs]()
Jul 11 19:51:25 nancy kernel: [ 4839.896869] Send length mismatch(send_length=72 smb_buf_length=2164260932)
Jul 11 19:51:25 nancy kernel: [ 4839.896871] Modules linked in: nls_utf8 cifs fscache xt_physdev iptable_filter ip_tables x_tables xen_netback xen_blkback xen_gntdev xen_evtchn xenfs xen_privcmd bridge stp llc gpio_ich ppdev snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_page_alloc snd_timer snd dm_multipath soundcore serio_raw scsi_dh lpc_ich shpchp parport_pc mac_hid it87 hwmon_vid coretemp lp parport pata_acpi raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor psmouse ahci libahci tulip raid6_pq r8169 mii raid1 pata_jmicron raid0 multipath linear
Jul 11 19:51:25 nancy kernel: [ 4839.896914] CPU: 3 PID: 14940 Comm: mount.cifs Tainted: G W 3.13.0-36-generic #63-Ubuntu
Jul 11 19:51:25 nancy kernel: [ 4839.896916] Hardware name: Gigabyte Technology Co., Ltd. EP43T-UD3L/EP43T-UD3L, BIOS F9 07/02/2010
Jul 11 19:51:25 nancy kernel: [ 4839.896918] 0000000000000009 ffff880019d7fbb0 ffffffff8171e569 ffff880019d7fbf8
Jul 11 19:51:25 nancy kernel: [ 4839.896921] ffff880019d7fbe8 ffffffff8106775d ffff880019d7fd00 ffff880007ac6000
Jul 11 19:51:25 nancy kernel: [ 4839.896924] ffff880019d7fcc8 0000000000000001 0000000000000000 ffff880019d7fc48
Jul 11 19:51:25 nancy kernel: [ 4839.896928] Call Trace:
Jul 11 19:51:25 nancy kernel: [ 4839.896935] [<ffffffff8171e569>] dump_stack+0x45/0x56
Jul 11 19:51:25 nancy kernel: [ 4839.896939] [<ffffffff8106775d>] warn_slowpath_common+0x7d/0xa0
Jul 11 19:51:25 nancy kernel: [ 4839.896941] [<ffffffff810677cc>] warn_slowpath_fmt+0x4c/0x50
Jul 11 19:51:25 nancy kernel: [ 4839.896949] [<ffffffffa02a44c5>] smb_send_rqst+0x215/0x270 [cifs]
Jul 11 19:51:25 nancy kernel: [ 4839.896954] [<ffffffff81690218>] ? __inet_stream_connect+0x208/0x320
Jul 11 19:51:25 nancy kernel: [ 4839.896962] [<ffffffffa02a455d>] smb_sendv+0x3d/0x40 [cifs]
Jul 11 19:51:25 nancy kernel: [ 4839.896969] [<ffffffffa02a4588>] smb_send+0x28/0x30 [cifs]
Jul 11 19:51:25 nancy kernel: [ 4839.896975] [<ffffffffa028e15d>] generic_ip_connect+0x30d/0x3e0 [cifs]
Jul 11 19:51:25 nancy kernel: [ 4839.896980] [<ffffffff811a1d65>] ? __kmalloc+0x55/0x230
Jul 11 19:51:25 nancy kernel: [ 4839.896987] [<ffffffffa029269c>] cifs_mount+0x85c/0xaf0 [cifs]
Jul 11 19:51:25 nancy kernel: [ 4839.896992] [<ffffffffa0281040>] cifs_do_mount+0xa0/0x4d0 [cifs]
Jul 11 19:51:25 nancy kernel: [ 4839.896996] [<ffffffff811c10a9>] mount_fs+0x39/0x1b0
Jul 11 19:51:25 nancy kernel: [ 4839.897000] [<ffffffff811dc447>] vfs_kern_mount+0x67/0x110
Jul 11 19:51:25 nancy kernel: [ 4839.897003] [<ffffffff811deca4>] do_mount+0x244/0xb20
Jul 11 19:51:25 nancy kernel: [ 4839.897006] [<ffffffff811530be>] ? __get_free_pages+0xe/0x50
Jul 11 19:51:25 nancy kernel: [ 4839.897009] [<ffffffff811de8e6>] ? copy_mount_options+0x36/0x170
Jul 11 19:51:25 nancy kernel: [ 4839.897011] [<ffffffff811df873>] SyS_mount+0x83/0xc0
Jul 11 19:51:25 nancy kernel: [ 4839.897015] [<ffffffff8172efad>] system_call_fastpath+0x1a/0x1f
Jul 11 19:51:25 nancy kernel: [ 4839.897017] ---[ end trace 75b91763eaa7eb15 ]---
Jul 11 19:51:25 nancy kernel: [ 4839.899038] CIFS VFS: Error connecting to socket. Aborting operation.
Jul 11 19:51:25 nancy kernel: [ 4839.899269] CIFS VFS: cifs_mount failed w/return code = -5

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: cifs-utils 2:6.0-1ubuntu2
ProcVersionSignature: Ubuntu 3.13.0-36.63-generic 3.13.11.6
Uname: Linux 3.13.0-36-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
Date: Sat Jul 11 19:44:04 2015
InstallationDate: Installed on 2013-02-01 (890 days ago)
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64+mac (20120822.4)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: cifs-utils
UpgradeStatus: Upgraded to trusty on 2014-09-25 (289 days ago)