[Samba] WInbind hang?

[Aaron C. de Bruyn]

I've had that happen in the past with non-RedHat linux boxes.
Fortunately we have Saltstack on all the boxes and can just salt '*'
cmd.run 'killall -SIGKILL winbindd; service winbind restart'

But it hangs SSH sessions and things like 'ls -lha' that need to resolve
usernames and groups.

i.e. if you removed winbind from /etc/nsswitch.conf it would stop happening.

The issue stopped happening to us in more recent versions.  We're
using 4.17.12 from the Debian repos.
The last time I used RedHat, I noticed they loved having software that was
wildly out-of-date in the name of stability and compatibility.  YMMV. ;)

-A

On Thu, Nov 16, 2023 at 1:32 PM Vaughan, Robert J via samba <
samba at lists.samba.org> wrote:

> Hello
>
> We are running several Red Hat 7 servers as domain members using AD for
> winbind idmap backend and it had been working fine (no sssd is configured
> either)
>
> The last month or so (possibly since the latest samba-winbind package
> update we applied on Sep 24), server ssh logins on several servers hang on
> occasion, until a winbind restart, when it all works again
>
> Since this is the Red Hat supplied samba-winbind I do have a ticket open
> with them but thought I might pose a question here too in case it sounds
> familiar to anyone
>
> We ALWAYS see this entry in log.winbindd at the moment the problem happens
> ..
>
> [2023/10/31 13:51:05.544086,  1]
> ../../source3/winbindd/winbindd_dual.c:337(wb_child_request_cleanup)
>   wb_child_request_cleanup: keep orphaned subreq[0x55cbee9dc870]
>
> but, we never see what appears to be the "response", when the problem does
> not happen like this ..
>
> [2023/09/06 16:51:23.703029,  1]
> ../../source3/winbindd/winbindd_dual.c:337(wb_child_request_cleanup)
>   wb_child_request_cleanup: keep orphaned subreq[0x555c02252ca0]
> [2023/09/06 16:52:07.229083,  1]
> ../../source3/winbindd/winbindd_dual.c:281(wb_child_request_orphaned)
>   wb_child_request_orphaned: cleanup orphaned subreq[0x555c02252ca0]
>
> One other thing, when the problem occurs, the restart of winbind seems to
> kill winbindd processes except one, which hangs out for something like 60
> seconds, then eventually dies and new processes show up
>
> Thanks,
>
> Rob
>
>
>
>
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