mount_smbfs stuck in devdrn

[Kostik Belousov]

On Thu, Jun 28, 2007 at 11:16:15PM +0200, Ivan Voras wrote:
> Hi
> 
> I've noticed a serious problem with mount_smbfs again: it doesn't work,
> it gets stuck in devdrn state. I've reported this before, and I think it
> was solved at the time (IIRC, interaction with devfs or devd), but it's
> back again.
It was never fixed in the CVS.
> 
> I can reproduce this 100% on two machines running different recent
> versions of 7-CURRENT, compiled without WITNESS and INVARIANTS. It works
> in 6-STABLE (maybe it was fixed in RELENG_6 only?).
RELENG_6 instead has a lot of use-after-free bugs fix for which causes
"devdrn" state you observed.
> 
> I've filed a PR about this but I didn't get a confirmation mail so maybe
> it's eaten by gnats again.
> 
> I'm using mount_smbfs like this:
> 
> # mount_smbfs -I host //ivoras at host/c$ /mnt
> 
Try
http://people.freebsd.org/~kib/misc/destroy_dev_sched.14.patch

Most likely, this shall fix your immediate problem. I'm very interested
in regression reports.

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