cifs: unable to mount cifs 1.0 shares because support for NTLM and weaker authentication algorithms was removed

cifs: unable to mount cifs 1.0 shares because support for NTLM and weaker authentication algorithms was removed

[Thorsten Leemhuis]

Hi, this is your Linux kernel regression tracker speaking.

There is a regression discussed in bugzilla I'd like to see tracked, to
ensure it's not forgotten. Quoting a few parts of the report:

> After 5.15.0, I'm unable to mount a CIFS 1.0 share from a media player which I cannot update (vendor no longer provides updates).
> 
> Original issue is logged here: https://bugs.gentoo.org/821895, with the most interesting bits probably being:

> Ok, 2.5 hours of bisecting later and I can confirm that the culprit is
> 
> [76a3c92ec9e0668e4cd0e9ff1782eb68f61a179c] cifs: remove support for NTLM and weaker authentication algorithms
> 
> The commit before works fine, this commit prevents me from mounting the smb shares on my mede8er 600x 3d.

#regzbot introduced: 76a3c92ec9e0668e
#regzbot link: https://bugzilla.kernel.org/show_bug.cgi?id=215375
#regzbot link: https://bugs.gentoo.org/821895

I'm not CCing any of the developers for now, looks like they are
handling it in bugzilla.

And yes, starting a extra thread for this is a hack hate myself, but I
need some workaround for tracking due to the distributed nature of bug
reporting with various different bug trackers in use (reminder:
bugzilla.kernel.org is not the only one used by kernel developers).

Ciao, Thorsten

Re: cifs: unable to mount cifs 1.0 shares because support for NTLM and weaker authentication algorithms was removed #forregzbot

[Thorsten Leemhuis]

On 23.12.21 11:48, Thorsten Leemhuis wrote:
> Hi, this is your Linux kernel regression tracker speaking.
> 
> There is a regression discussed in bugzilla I'd like to see tracked, to
> ensure it's not forgotten. Quoting a few parts of the report:
> 
>> After 5.15.0, I'm unable to mount a CIFS 1.0 share from a media player which I cannot update (vendor no longer provides updates).
>>
>> Original issue is logged here: https://bugs.gentoo.org/821895, with the most interesting bits probably being:
> 
>> Ok, 2.5 hours of bisecting later and I can confirm that the culprit is
>>
>> [76a3c92ec9e0668e4cd0e9ff1782eb68f61a179c] cifs: remove support for NTLM and weaker authentication algorithms
>>
>> The commit before works fine, this commit prevents me from mounting the smb shares on my mede8er 600x 3d.
> 
> #regzbot introduced: 76a3c92ec9e0668e
> #regzbot link: https://bugzilla.kernel.org/show_bug.cgi?id=215375
> #regzbot link: https://bugs.gentoo.org/821895
> 
> I'm not CCing any of the developers for now, looks like they are
> handling it in bugzilla.
> 
> And yes, starting a extra thread for this is a hack hate myself, but I
> need some workaround for tracking due to the distributed nature of bug
> reporting with various different bug trackers in use (reminder:
> bugzilla.kernel.org is not the only one used by kernel developers).
> 
> Ciao, Thorsten
> 

There is a proper report now tracked by regzbot:

#regzbot dup-of:
https://lore.kernel.org/lkml/CAJjP=Bt52AW_w2sKnM=MbckPkH1hevPMJVWm_Wf%2BwThmR72YTg@mail.gmail.com/

TWIMC: this mail is primarily send for documentation purposes and for
regzbot, my Linux kernel regression tracking bot. These mails usually
contain '#forregzbot' in the subject, to make them easy to spot and filter.