Re: kernel-5.18.8 breaks cifs mounts

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Am 04.07.22 um 18:29 schrieb Julian Sikorski:


Am 03.07.22 um 19:51 schrieb Stefan Metzmacher:
Am 03.07.22 um 07:01 schrieb Steve French:
I lean toward thinking that this is a Samba bug (although I don't see
it on my local system - it works to samba for me, although I was
trying against a slightly different version, Samba 4.15.5-Ubuntu).

Looking at the traces in more detail they look the same (failing vs.
working) other than the order of the negotiate context, which fails
with POSIX as the 3rd context, and netname as the 4th, but works with
the order reversed (although same contexts, and same overall length)
ie with POSIX context as the fourth one and netname context as the
third one.

The failing server code in Samba is in
smbd_smb2_request_process_negprot but I don't see changes to it
recently around this error.

Does this fail to anyone else's Samba version?

This is probably a Samba server bug but ... seems odd since it doesn't
fail to Samba for me.

Jeremy/Metze,
Does this look familiar?

Maybe this one:

https://git.samba.org/?p=samba.git;a=commitdiff;h=147dd9d58a429695a3b6c6e45c8b0eaafc67908a

that went only into 4.15 and higher.

metze

Nice catch, I can confirm that adding this patch to debian samba 2:4.13.13+dfsg-1~deb11u3 package makes the mounts work again. How do we get this patch into debian?

Best regards,
Julian
I have now filed a bug against debian samba package:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1014453

Best regards,
Julian



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