Messages in this thread | | | Subject | Re: net: deadlock between ip_expire/sch_direct_xmit | From | Paolo Abeni <> | Date | Tue, 14 Mar 2017 16:34:18 +0100 |
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On Tue, 2017-03-14 at 08:09 -0700, Eric Dumazet wrote: > On Tue, Mar 14, 2017 at 8:03 AM, Paolo Abeni <pabeni@redhat.com> wrote: > > > I'm wondering if we really need to keep the fragment queue lock held > > while sending the icmp packet ? we hold a reference to the struct, so > > it can't be deleted, and AFAICS after ipq_kill() nobody else could > > access/modify that queue. > > > > That lock is there pretty much forever, but perhaps is only a leftover > > and we can release it just after ipq_kill() ? > > Maybe, but for peace of mind I would make sure this code path owns the > skb (head) before releasing the lock. > > Seems something to try for net-next ?
Agreed.
I asked because I was in doubt I missed something obvious.
Thank you,
Paolo
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