On Mon, 2015-11-02 at 22:46 -0500, David Miller wrote:
> From: Eric Dumazet <eric.duma...@gmail.com>
> Date: Mon, 02 Nov 2015 07:50:07 -0800
>
> > From: Eric Dumazet <eduma...@google.com>
> >
> > Under low memory conditions, tcp_sk_init() and icmp_sk_init()
> > can both iterate on all possible cpus and call inet_ctl_sock_destroy(),
> > with eventual NULL pointer.
> >
> > Signed-off-by: Eric Dumazet <eduma...@google.com>
> > Reported-by: Dmitry Vyukov <dvyu...@google.com>
>
> Applied.
Thanks David.
Bug origin was in linux-4.2 :
commit 26abe14379f8e2fa3fd1bcf97c9a7ad9364886fe
Author: Eric W. Biederman <ebied...@xmission.com>
Date: Fri May 8 21:10:31 2015 -0500
net: Modify sk_alloc to not reference count the netns of kernel sockets.
Now that sk_alloc knows when a kernel socket is being allocated modify
it to not reference count the network namespace of kernel sockets.
Keep track of if a socket needs reference counting by adding a flag to
struct sock called sk_net_refcnt.
Update all of the callers of sock_create_kern to stop using
sk_change_net and sk_release_kernel as those hacks are no longer
needed, to avoid reference counting a kernel socket.
Signed-off-by: "Eric W. Biederman" <ebied...@xmission.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
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