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IDProjectCategoryView StatusLast Update
0016552CentOS-7kernelpublic2019-10-07 23:19
Reportercjcox 
PrioritynormalSeveritymajorReproducibilityalways
Status newResolutionopen 
Platformx86_64OSCentOsOS Version7.7
Product Version7.7-1908 
Target VersionFixed in Version 
Summary0016552: Recent CentOS kernels (sometime after 7.4) cifs.ko module fails mounting anything
DescriptionAttempt to mount any Windows share (tested fully updated windows server 2012R2, Windows 10 1809, and Windows 10 1903) fails.

Oct 7 10:19:53 d0lppb080 kernel: CIFS VFS: validate protocol negotiate failed: -22
Oct 7 10:19:53 d0lppb080 kernel: CIFS VFS: failed to connect to IPC (rc=-5)
Oct 7 10:19:53 d0lppb080 kernel: CIFS VFS: validate protocol negotiate failed: -22
Oct 7 10:19:53 d0lppb080 kernel: CIFS VFS: session ffff9f240257c000 has no tcon available for a dfs referral request
Oct 7 10:19:53 d0lppb080 kernel: CIFS VFS: cifs_mount failed w/return code = -5
Steps To Reproducemount -t cifs //d0wppb122/x /tmpmnt -o username=user,workgroup=D0WPPB122,vers=3.0,password=password

We tried multiple values of vers= and sec=. However the above is where we originally discovered the inability to mount.
Additional InformationRolling our system back to 3.10.0-862.14.4.el7.x86_64 (chose this kernel because it was installed on our CentOS 7 system, not sure what "version" update of CentOS it actually belongs to). We suspect that the bad kernel module happend sometime after 7.4, but can't say when.

We are willing to do some basic experiments using the 7.7 kernel (3.10.0-1062.1.2.el7.x86_64). If there's a workaround using the later kernel, we haven't found it.
Tagscifs
abrt_hash
URL

Activities

cjcox

cjcox

2019-10-07 23:19

reporter   ~0035368

Looks like sometime after 7.5 for sure. We just know it all breaks with the cifs kernel module that comes with 7.7.

Issue History

Date Modified Username Field Change
2019-10-07 16:53 cjcox New Issue
2019-10-07 16:53 cjcox Tag Attached: cifs
2019-10-07 23:19 cjcox Note Added: 0035368