[Samba] NT_STATUS_NETWORK_SESSION_EXPIRED

[David Mace]

Hi,

Looking for some help with this issue, been struggling for a few weeks

We run a file server using Samba 4.9.5 (openSUSE Leap 15.2
4.9.5+git.343.4bc358522a9-lp151.2.27.1).

Active Directory using Windows Server 2016. The Samba server is a
member of the domain. Windows 10 desktops and Linux desktops are also
domain members.

Windows 10 desktops map network drives to the Samba server, no issues
seen. Everything appears to be working.

Linux desktops map shares using GVFS `gio mount` command and
authenticate with user's kerberos ticket.

After 10 hours or so, the gio mounts become inaccessible. GNOME
Nautilus gives error "invalid argument".

GVFS debug log shows

smbc_stat(smb://fileserver.domain.co.uk/share)
SMBC_getatr: sending qpathinfo
map_errno_from_nt_status: 32 bit codes: code=c000035c
smbc errno NT_STATUS_NETWORK_SESSION_EXPIRED -> 22
smb: send_reply(0x7fb930002840), failed=1 (Invalid argument)
smb: backend_dbus_handler org.gtk.vfs.Mount:QueryInfo (pid=24714)
smb: Queued new job 0x7fb924007700 (GVfsJobQueryInfo)


These Linux desktops also mount shares from a Windows Server 2012
server, using gio mount, and do not experience the same issue. Only
when Linux desktops map to the Samba server do we see this issue

Thanks
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