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Date:      Tue, 8 Mar 2016 15:18:40 +0300
From:      Chagin Dmitry <dchagin@freebsd.org>
To:        Konstantin Belousov <kostikbel@gmail.com>
Cc:        Nils Beyer <nbe@renzel.net>, freebsd-emulation@freebsd.org
Subject:   Re: citrix_ica - "wfica" generates deadlock in linux_sys_futex...
Message-ID:  <20160308121840.GA33240@chd.heemeyer.club>
In-Reply-To: <20160308115018.GM67250@kib.kiev.ua>
References:  <1710849.HCaPmFIAXo@asbach.renzel.net> <20160308075527.GA29364@chd.heemeyer.club> <1794078.TnZCHkfeGo@asbach.renzel.net> <20160308085140.GA30833@chd.heemeyer.club> <2225619.DhA8sIh2h8@asbach.renzel.net> <20160308093009.GA31396@chd.heemeyer.club> <20160308115018.GM67250@kib.kiev.ua>

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On Tue, Mar 08, 2016 at 01:50:18PM +0200, Konstantin Belousov wrote:
> On Tue, Mar 08, 2016 at 12:30:10PM +0300, Chagin Dmitry wrote:
> > 
> > in new kernel:
> > 
> >   1828 100750 wfica    0.000031 CALL  L32  linux_ipc(0x2,0x1e240,0x1,0x7b6,0,0x2d4cb598)
> >   1828 100750 wfica    0.000010 RET   L32  linux_ipc  -1 errno 17 File exists
> >   1828 100750 wfica    0.000008 CALL  L32  linux_ipc(0x2,0x1e240,0x1,0x1b6,0,0x2d4cb598)
> >   1828 100750 wfica    0.000007 RET   L32  linux_ipc  65536/0x10000
> > 
> > this is strange as no ipc changes are made in stable/10
> 
> There was one interesting change, AFAIR.
> 
> Check the value of sysctl kern.ipc.shm_allow_removed, and if it's value
> is one, change it to zero.
trasz@ did not merged r289112 to the stable/10



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