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SubjectRe: Asterisk deadlocks since Kernel 4.1
Date
Hello,

On Wed, Dec 2, 2015, at 18:15, Philipp Hahn wrote:
> Hi,
>
> Am 02.12.2015 um 10:45 schrieb Stefan Priebe - Profihost AG:
> > here are the results.
> >
> > It works with 4.1.
> > It works with 4.2.
> > It does not work with 4.1.13.
>
> the patches were first commitet in v4.3-rc3 and appear as backports only
> since v4.2.3 and v4.1.10
>
> > git bisect tells me it stopped working after those two commits were applied:
> >
> > commit d48623677191e0f035d7afd344f92cf880b01f8e
> > Author: Herbert Xu <herbert@gondor.apana.org.au>
> > Date: Tue Sep 22 11:38:56 2015 +0800
> >
> > netlink: Replace rhash_portid with bound
> >
> > commit 4e27762417669cb459971635be550eb7b5598286
> > Author: Herbert Xu <herbert@gondor.apana.org.au>
> > Date: Fri Sep 18 19:16:50 2015 +0800
> >
> > netlink: Fix autobind race condition that leads to zero port ID
>
> I identified the same two patches for our prpblem; see mail from
> 2015-11-17 16:53 with subject "Strange PF_NETLINK NETLINK_ROUTE stall:
> netlink: Fix autobind race condition that leads to zero port ID"
>
> <http://marc.info/?l=linux-kernel&m=144863837825887&w=2>

Thanks, I missed this mail. I have a further look. I couldn't reproduce
it myself but will check if your test program does it.

Thanks a lot,
Hannes


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