Disabling the oplocks should fix the problem. They can be turn on again with
build 124.

- Jose

> -----Original Message-----
> From: [email protected] [mailto:cifs-discuss-
> [email protected]] On Behalf Of Joyce McIntosh
> Sent: Thursday, September 24, 2009 12:30 PM
> To: Brent Jones
> Cc: [email protected]
> Subject: Re: [cifs-discuss] SMB Crash on snv_123
> 
> It's not an oplock but but it did occur to me that disabling them might
> avoid it.
> 
> It might be worth trying that...
> 
> Joyce
> 
> Brent Jones wrote:
> > Would disabling oplocks be a feasible workaround?
> > It seems oplocks are enabled in recent builds.
> >
> >
> > On Thu, Sep 24, 2009 at 11:09 AM, Joyce McIntosh
> <[email protected]> wrote:
> >
> >> It was introduced in snv_119.
> >> Going forward to snv_124 will be the best solution.
> >>
> >> Joyce
> >>
> >> Brent Jones wrote:
> >>
> >>> Did this issue exist in snv_122? I don't see where the issue was
> >>> introduced, and I can roll-back to 122 if the bug doesn't exist in
> >>> that build.
> >>>
> >>>
> >>> On Thu, Sep 24, 2009 at 11:06 AM, Joyce McIntosh
> <[email protected]>
> >>> wrote:
> >>>
> >>>
> >>>> This is a known issue: CR 6884892 PANIC : Deadlock: cycle in
> blocking
> >>>> chain
> >>>>
> >>>> It is already addressed in snv_124.
> >>>>
> >>>> Thanks
> >>>> Joyce
> >>>>
> >>>> Brent Jones wrote:
> >>>>
> >>>>
> >>>>> I just received a crash on one of my filers running snv_123.
> >>>>>
> >>>>> There was a bit of CIFS traffic, about 100Mbps when the crash
> occured.
> >>>>>
> >>>>> Is this a known issue, or should I open a case?
> >>>>>
> >>>>> Here is dmesg output:
> >>>>>
> >>>>>
> >>>>> Sep 24 13:45:49 pdxfilu01 unix: [ID 836849 kern.notice]
> >>>>> Sep 24 13:45:49 pdxfilu01 ^Mpanic[cpu2]/thread=ffffff007b656c60:
> >>>>> Sep 24 13:45:49 pdxfilu01 genunix: [ID 783603 kern.notice]
> Deadlock:
> >>>>> cycle in blocking chain
> >>>>> Sep 24 13:45:49 pdxfilu01 unix: [ID 100000 kern.notice]
> >>>>> Sep 24 13:45:49 pdxfilu01 genunix: [ID 655072 kern.notice]
> >>>>> ffffff007b656880 genunix:turnstile_block+799 ()
> >>>>> Sep 24 13:45:49 pdxfilu01 genunix: [ID 655072 kern.notice]
> >>>>> ffffff007b6568e0 unix:mutex_vector_enter+261 ()
> >>>>> Sep 24 13:45:49 pdxfilu01 genunix: [ID 655072 kern.notice]
> >>>>> ffffff007b656910 smbsrv:smb_node_release+23 ()
> >>>>> Sep 24 13:45:49 pdxfilu01 genunix: [ID 655072 kern.notice]
> >>>>> ffffff007b656960 genunix:remove_node+77 ()
> >>>>> Sep 24 13:45:49 pdxfilu01 genunix: [ID 655072 kern.notice]
> >>>>> ffffff007b6569d0 genunix:fem_remove_node+12d ()
> >>>>> Sep 24 13:45:49 pdxfilu01 genunix: [ID 655072 kern.notice]
> >>>>> ffffff007b656a00 genunix:fem_uninstall+34 ()
> >>>>> Sep 24 13:45:49 pdxfilu01 genunix: [ID 655072 kern.notice]
> >>>>> ffffff007b656a20 smbsrv:smb_fem_oplock_uninstall+26 ()
> >>>>> Sep 24 13:45:49 pdxfilu01 genunix: [ID 655072 kern.notice]
> >>>>> ffffff007b656a40 smbsrv:smb_fsop_oplock_uninstall+15 ()
> >>>>> Sep 24 13:45:49 pdxfilu01 genunix: [ID 655072 kern.notice]
> >>>>> ffffff007b656a80 smbsrv:smb_oplock_release+7a ()
> >>>>> Sep 24 13:45:49 pdxfilu01 genunix: [ID 655072 kern.notice]
> >>>>> ffffff007b656ac0 smbsrv:smb_ofile_close+16f ()
> >>>>> Sep 24 13:45:49 pdxfilu01 genunix: [ID 655072 kern.notice]
> >>>>> ffffff007b656ae0 smbsrv:smb_com_close+30 ()
> >>>>> Sep 24 13:45:49 pdxfilu01 genunix: [ID 655072 kern.notice]
> >>>>> ffffff007b656b80 smbsrv:smb_dispatch_request+455 ()
> >>>>> Sep 24 13:45:49 pdxfilu01 genunix: [ID 655072 kern.notice]
> >>>>> ffffff007b656bb0 smbsrv:smb_session_worker+4a ()
> >>>>> Sep 24 13:45:49 pdxfilu01 genunix: [ID 655072 kern.notice]
> >>>>> ffffff007b656c40 genunix:taskq_d_thread+b1 ()
> >>>>> Sep 24 13:45:49 pdxfilu01 genunix: [ID 655072 kern.notice]
> >>>>> ffffff007b656c50 unix:thread_start+8 ()
> >>>>> Sep 24 13:45:49 pdxfilu01 unix: [ID 100000 kern.notice]
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>
> >>>
> >>>
> >>>
> >>
> >
> >
> >
> >
> 
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