CIFS module =>2.06 shipped with Xenial cannot stat files.

[Miguel Santos N]

This seems to be a kernel bug affecting cifs modules => 2.06.

This might be fixed by the upstream kernel provider but I need it fixed in the specific kernel version that Ubuntu ships.

root@miguel-test2:~/cifs-bug-xenial# mount -t cifs //157.249.168.181/storeB /mnt/ -o ro,guest
root@miguel-test2:~/cifs-bug-xenial# ls -l /mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VN_minQNH_ZONE_BCD-2017-02-22-06:00:00-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/NRKMIDNATT_V-2017-02-22-23:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VVkyst0-1-2017-02-22-12:00:00-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/ENHF-ENBJ-2017-02-23-00:00:00-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNkyst0-1-2017-02-22-12:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNkystobs-2017-02-22-12:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNfisk-2017-02-22-12:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VN_Obsvarsel_kansellering-2017-02-22-07:27:04-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNkystobs-2017-02-22-18:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNhav-2017-02-22-10:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/METoversikt0-2017-02-22-12:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNhav-2017-02-22-22:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNkyst0-2017-02-22-09:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNfisk-2017-02-22-22:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNiga-2017-02-22-06:00:00-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNhoydevind_ENNA-2017-02-22-04:00:00-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/ENHF-ENBJ-2017-02-22-12:00:00-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VVkyst0-1-2017-02-22-18:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNiga-2017-02-22-13:00:00-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VVkyst0-1-2017-02-22-18:00:00-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/METoversikt1-2017-02-22-18:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/Sigmet_E-2017-02-22-03:45:40-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/METoversikt0-2017-02-23-00:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNhoydevind_ENBO-2017-02-22-04:00:00-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNkyst0-1-2017-02-22-18:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNhav-2017-02-22-22:00:00-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/Airmet_D-2017-02-22-14:00:36-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNkystobs-2017-02-22-15:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNhoydevind_ENDU-2017-02-22-04:00:00-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/MIradio_V-2017-02-22-20:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/METfare-2017-02-22-21:07:36-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNkystobs-2017-02-22-06:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNkyst0-1-2017-02-22-18:00:00-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNfisk-2017-02-22-15:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNkystobs-2017-02-22-09:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNkyst0-2017-02-22-09:00:00-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/METfare-2017-02-22-07:22:34-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/Sigmet_E-2017-02-22-08:04:12-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VVkyst0-1-2017-02-22-12:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/Sigmet_E-2017-02-22-11:40:38-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VN_minQNH_Tromsoflaket-2017-02-22-06:00:00-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNiga-2017-02-22-02:00:00-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNhav-2017-02-22-10:00:00-EN.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/METoversikt1-2017-02-22-12:00:00-NB.txt': No such file or directory
ls: '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/VNkyst0-1-2017-02-22-12:00:00-EN.txt': No such file or directory
total 554
-rw-r--r-- 1 starc starc 218 Feb 22 14:04 Airmet_D-2017-02-22-14:00:36-EN.txt
-rw-r--r-- 1 starc starc 861 Feb 22 10:46 ENHF-ENBJ-2017-02-22-12:00:00-EN.txt
-rw-r--r-- 1 starc starc 914 Feb 22 21:07 ENHF-ENBJ-2017-02-23-00:00:00-EN.txt
-rw-r--r-- 1 starc starc 1422 Feb 22 07:24 METfare-2017-02-22-07:22:34-NB.txt
-rw-r--r-- 1 starc starc 1263 Feb 22 21:10 METfare-2017-02-22-21:07:36-NB.txt
-rw-r--r-- 1 starc starc 2519 Feb 22 11:13 METoversikt0-2017-02-22-12:00:00-NB.txt
-rw-r--r-- 1 starc starc 1912 Feb 22 20:40 METoversikt0-2017-02-23-00:00:00-NB.txt
-rw-r--r-- 1 starc starc 1912 Feb 22 11:05 METoversikt1-2017-02-22-12:00:00-NB.txt
-rw-r--r-- 1 starc starc 1898 Feb 22 15:57 METoversikt1-2017-02-22-18:00:00-NB.txt
-rw-r--r-- 1 starc starc 1689 Feb 22 19:30 MIradio_V-2017-02-22-20:00:00-NB.txt
-rw-r--r-- 1 starc starc 1162 Feb 22 20:43 NRKMIDNATT_V-2017-02-22-23:00:00-NB.txt
-rw-r--r--+ 1 starc starc 2044 Feb 22 01:28 nt012824771804_vniga.txt
-rw-r--r--+ 1 starc starc 2165 Feb 22 06:34 nt063444655101_vniga.txt
-rw-r--r--+ 1 starc starc 2132 Feb 22 13:28 nt132846757661_vniga.txt
-rw-r--r-- 1 starc starc 220 Feb 22 03:47 Sigmet_E-2017-02-22-03:45:40-EN.txt
-rw-r--r-- 1 starc starc 235 Feb 22 08:05 Sigmet_E-2017-02-22-08:04:12-EN.txt
-rw-r--r-- 1 starc starc 236 Feb 22 11:44 Sigmet_E-2017-02-22-11:40:38-EN.txt
-rw-r--r-- 1 starc starc 4154 Feb 22 10:03 VNfisk-2017-02-22-12:00:00-NB.txt
-rw-r--r-- 1 starc starc 3549 Feb 22 12:27 VNfisk-2017-02-22-15:00:00-NB.txt
-rw-r--r-- 1 starc starc 2645 Feb 22 19:40 VNfisk-2017-02-22-22:00:00-NB.txt
-rw-r--r-- 1 starc starc 5108 Feb 22 09:48 VNhav-2017-02-22-10:00:00-EN.txt
-rw-r--r-- 1 starc starc 4966 Feb 22 09:45 VNhav-2017-02-22-10:00:00-NB.txt
-rw-r--r-- 1 starc starc 4154 Feb 22 19:10 VNhav-2017-02-22-22:00:00-EN.txt
-rw-r--r-- 1 starc starc 4112 Feb 22 19:11 VNhav-2017-02-22-22:00:00-NB.txt
-rw-r--r-- 1 starc starc 1858 Feb 22 04:28 VNhoydevind_ENBO-2017-02-22-04:00:00-EN.txt
-rw-r--r-- 1 starc starc 1882 Feb 22 04:32 VNhoydevind_ENDU-2017-02-22-04:00:00-EN.txt
-rw-r--r-- 1 starc starc 1854 Feb 22 04:36 VNhoydevind_ENNA-2017-02-22-04:00:00-EN.txt
-rw-r--r-- 1 starc starc 1692 Feb 22 01:28 VNiga-2017-02-22-02:00:00-EN.txt
-rw-r--r-- 1 starc starc 1765 Feb 22 06:34 VNiga-2017-02-22-06:00:00-EN.txt
-rw-r--r-- 1 starc starc 1800 Feb 22 13:28 VNiga-2017-02-22-13:00:00-EN.txt
-rw-r--r-- 1 starc starc 1996 Feb 22 11:05 VNkyst0-1-2017-02-22-12:00:00-EN.txt
-rw-r--r-- 1 starc starc 2147 Feb 22 11:01 VNkyst0-1-2017-02-22-12:00:00-NB.txt
-rw-r--r-- 1 starc starc 2060 Feb 22 17:10 VNkyst0-1-2017-02-22-18:00:00-EN.txt
-rw-r--r-- 1 starc starc 2170 Feb 22 17:03 VNkyst0-1-2017-02-22-18:00:00-NB.txt
-rw-r--r-- 1 starc starc 1092 Feb 22 07:20 VNkyst0-2017-02-22-09:00:00-EN.txt
-rw-r--r-- 1 starc starc 1199 Feb 22 07:16 VNkyst0-2017-02-22-09:00:00-NB.txt
-rw-r--r-- 1 starc starc 1021 Feb 22 06:40 VNkystobs-2017-02-22-06:00:00-NB.txt
-rw-r--r-- 1 starc starc 1040 Feb 22 09:51 VNkystobs-2017-02-22-09:00:00-NB.txt
-rw-r--r-- 1 starc starc 1048 Feb 22 12:30 VNkystobs-2017-02-22-12:00:00-NB.txt
-rw-r--r-- 1 starc starc 1051 Feb 22 16:10 VNkystobs-2017-02-22-15:00:00-NB.txt
-rw-r--r-- 1 starc starc 1028 Feb 22 18:29 VNkystobs-2017-02-22-18:00:00-NB.txt
-rw-r--r-- 1 starc starc 144 Feb 22 06:13 VN_minQNH_Tromsoflaket-2017-02-22-06:00:00-EN.txt
-rw-r--r-- 1 starc starc 318 Feb 22 06:13 VN_minQNH_ZONE_BCD-2017-02-22-06:00:00-EN.txt
-rw-r--r-- 1 starc starc 315 Feb 22 07:27 VN_Obsvarsel_kansellering-2017-02-22-07:27:04-NB.txt
-rw-r--r-- 1 starc starc 1775 Feb 22 10:15 VVkyst0-1-2017-02-22-12:00:00-EN.txt
-rw-r--r-- 1 starc starc 1898 Feb 22 10:10 VVkyst0-1-2017-02-22-12:00:00-NB.txt
-rw-r--r-- 1 starc starc 1463 Feb 22 16:39 VVkyst0-1-2017-02-22-18:00:00-EN.txt
-rw-r--r-- 1 starc starc 1535 Feb 22 16:30 VVkyst0-1-2017-02-22-18:00:00-NB.txt
root@miguel-test2:~/cifs-bug-xenial# stat /mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/ENHF-ENBJ-2017-02-23-00\:00\:00-EN.txt
stat: cannot stat '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/ENHF-ENBJ-2017-02-23-00:00:00-EN.txt': No such file or directory
root@miguel-test2:~/cifs-bug-xenial# ls -l /mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/ENHF-ENBJ-2017-02-23-00\:00\:00-EN.txt
ls: cannot access '/mnt/immutable/short-term-archive/DNMI_VARSLER/2017/02/22/vn/ENHF-ENBJ-2017-02-23-00:00:00-EN.txt': No such file or directory
root@miguel-test2:~/cifs-bug-xenial# umount /mnt

DMESG shows:
[ 226.235924] Status code returned 0xc0000016 NT_STATUS_MORE_PROCESSING_REQUIRED
[ 226.741027] Status code returned 0xc0000225 NT_STATUS_NOT_FOUND
[ 231.620520] Status code returned 0xc0000034 NT_STATUS_OBJECT_NAME_NOT_FOUND
[ 231.621644] Status code returned 0xc0000034 NT_STATUS_OBJECT_NAME_NOT_FOUND
[ 231.622745] Status code returned 0xc0000034 NT_STATUS_OBJECT_NAME_NOT_FOUND
[ 231.623472] Status code returned 0xc0000034 NT_STATUS_OBJECT_NAME_NOT_FOUND
[ 231.624101] Status code returned 0xc0000034 NT_STATUS_OBJECT_NAME_NOT_FOUND
[ 231.624759] Status code returned 0xc0000034 NT_STATUS_OBJECT_NAME_NOT_FOUND
[ 231.625976] Status code returned 0xc0000034 NT_STATUS_OBJECT_NAME_NOT_FOUND
[ 231.626505] Status code returned 0xc0000034 NT_STATUS_OBJECT_NAME_NOT_FOUND

This behavior is not reproducible in trusty (see the attached files), nor in CentOS 6, and early CentOS 7, I see this behavior on cifs module => 2.06.

The options which are used by default are:

//157.249.168.181/storeB /mnt cifs ro,relatime,vers=1.0,sec=none,cache=strict,domain=xxxxx,uid=0,noforceuid,gid=0,noforcegid,addr=157.249.168.181,unix,posixpaths,serverino,mapposix,acl,rsize=1048576,wsize=65536,actimeo=1 0 0

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-64-generic 4.4.0-64.85
ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
Uname: Linux 4.4.0-64-generic x86_64
AlsaDevices:
 total 0
 crw-rw---- 1 root audio 116, 1 Feb 27 09:08 seq
 crw-rw---- 1 root audio 116, 33 Feb 27 09:08 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: N/A
Date: Mon Feb 27 11:02:17 2017
Ec2AMI: ami-0000005d
Ec2AMIManifest: FIXME
Ec2AvailabilityZone: ares-a
Ec2InstanceType: int-m1.tiny
Ec2Kernel: unavailable
Ec2Ramdisk: unavailable
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
 Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd
 Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: Fedora Project OpenStack Nova
PciMultimedia:

ProcEnviron:
 SHELL=/bin/bash
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_US.UTF-8
ProcFB:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-64-generic root=UUID=86c77828-8f87-49e0-9035-8999018d0bcb ro console=tty1 console=ttyS0
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-64-generic N/A
 linux-backports-modules-4.4.0-64-generic N/A
 linux-firmware N/A
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/01/2011
dmi.bios.vendor: Seabios
dmi.bios.version: 0.5.1
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias: dmi:bvnSeabios:bvr0.5.1:bd01/01/2011:svnFedoraProject:pnOpenStackNova:pvr12.0.1-1.el7:cvnBochs:ct1:cvr:
dmi.product.name: OpenStack Nova
dmi.product.version: 12.0.1-1.el7
dmi.sys.vendor: Fedora Project

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream stable kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.4 stable kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.52

[Miguel Santos N (msantosn)]

I tested with the latest kernel of branch 4.4 available on kernel.org which is 4.4.52.

I see the exact same behavior. The cifs module is the same version as the one shipped with Xenial's kernel. Therefore I am setting the tag kernel-bug-exists-upstream as you suggested.

Thank you.