[CRIU] ERROR -2 reported by netlink (No such file or directory)

[Adrian Reber]

On Wed, Dec 12, 2018 at 02:42:43PM +0300, Cyrill Gorcunov wrote:
> On Wed, Dec 12, 2018 at 12:23:32PM +0100, Adrian Reber wrote:
> > Hello Cyrill,
> > 
> > I saw a few commits from you related to 'inet: raw'. I hope you are the
> > right person for my problem. On my RHEL7 system I get following line in
> > CRIU's dump.log:
> > 
> > # (00.004061) unix: 	Collected: ino 75689 peer_ino 0 family    1 type    5 state  7 name (null)
> > # (00.004170) Error (criu/libnetlink.c:27): ERROR -2 reported by netlink (No such file or directory)
> > # (00.004176) Warn  (criu/sockets.c:791): sockets: The current kernel doesn't support ipv4 raw_diag module
> > # (00.004271) Error (criu/libnetlink.c:27): ERROR -2 reported by netlink (No such file or directory)
> > # (00.004274) Warn  (criu/sockets.c:834): sockets: The current kernel doesn't support ipv6 raw_diag module
> 
> Hi Adrian! Yes, I wrote the code for inet raw support. You know there are
> several problems in one stack: 1) Recent (but not latest) kernels doesn't
> support of autoloading of raw modules via diag interface. Andrew fixed it
> recently but I'm not sure how much time will pass until the patch hit
> all distros; 2) There was a series https://patchwork.criu.org/series/3124/
> which should placate error messaging when used together with Andrew's fix.
> 
> What is more inconvenient I think is that we have to live with old kernels
> and I think should not issue an error in this case.
> 
> That said, gimme some time I'll try to figure out what we can do about
> it. Hopefully I'll manage today, ok?

Thanks. This is not urgent. Just saw it today. It just should be fixed
before 3.12, so that we do not break things like the runc test cases.

		Adrian