Re: Glibc recvmsg from kernel netlink socket hangs forever

[Guenter Roeck]

On 03/11/2016 04:13 PM, Cong Wang wrote:
> On Fri, Mar 11, 2016 at 3:50 PM, Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
> > On Fri, Mar 11, 2016 at 11:33:17AM -0800, Jun Wang wrote:
> > > Guenter,
> > >
> > > Which additional netlink changes from 4.2 did you patch? We still see
> > > the problem with your test program with 4.1.12 which have the
> > > following two patches mentioned by Herbert Xu on this thread.
> > Jun,
> >
> > Sorry, I don't recall, and I no longer have access to the kernel since
> > I now work for a different company. I do recall that we had to apply
> > additional patches later, but I don't remember details.
>
> I think it is probably this one:
>
> https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/net/netlink/af_netlink.c?h=linux-4.1.y&id=a52ec6de6d1638e8c203d7188c55627f75371612
>
> The original backport is incorrect in 4.1 branch, and it is fixed now.
Yes, overall I would hope that 4.1.y should be up to date and working now.

Guenter