Hang with ZERO_COPY_SOCKETS or TCP_SIGNATURE enabled? (was: system locks up with vr driver on alix board)

[Kostik Belousov]

On Sat, Aug 20, 2011 at 04:58:59PM -0700, Ask Bj?rn Hansen wrote:
> 
> On Aug 17, 2011, at 7:52, Ask Bj?rn Hansen wrote:
> 
> > Grasping at straws here, but when enabling BREAK_TO_DEBUGGER I noticed that the kernel had ZERO_COPY_SOCKETS and TCP_SIGNATURE enabled.  I disabled those, "just in case".
> 
> Hi everyone,
> 
> Thanks again for your help and hints getting this fixed for me.
> 
> I just wanted to send an update that those kernel options seemed to be the ticket to make it stable again.  I haven't had it hang since disabling IPSEC, ZERO_COPY_SOCKETS and TCP_SIGNATURE (I wasn't using md5 signatures, having any ipsec sessions or to my knowledge running any applications that'd be using zero copy sockets).
ZERO_COPY_SOCKETS are known to be broken.
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