citrix_ica - "wfica" generates deadlock in linux_sys_futex...

[Chagin Dmitry]

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