linux-kernel - Re: Strange PF_NETLINK NETLINK_ROUTE stall: netlink: Fix autobind race condition that leads to zero port ID

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Message-ID: <20151205011008.GB21889@gondor.apana.org.au>
Date:	Sat, 5 Dec 2015 09:10:08 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Philipp Hahn <hahn@...vention.de>
Cc:	linux-kernel@...r.kernel.org, Tejun Heo <tj@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: Strange PF_NETLINK NETLINK_ROUTE stall: netlink: Fix autobind
 race condition that leads to zero port ID

On Fri, Nov 27, 2015 at 04:23:54PM +0100, Philipp Hahn wrote:
> 
> I observed a strange stall in a multi-threaded process (originally
> OpenLDAP slapd), which stalls during a call to getaddrinfo() after
> upgrading the kernel from 3.16.x to 4.1.12:

Can you try to see if the latest kernel still has this problem.
Unfortunately a number of fixes seem to not have made it into
4.1 so anything could happen there.

Thanks,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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