On Thu, 21 Apr 2016 09:42:12 +0200, Hannes Frederic Sowa said: > Hi, > > On Thu, Apr 21, 2016, at 02:30, Valdis Kletnieks wrote: > > linux-next 20160420 is whining at an incredible rate - in 20 minutes of > > uptime, I piled up some 41,000 hits from all over the place (cleaned up > > to skip the CPU and PID so the list isn't quite so long): > > Thanks for the report. Can you give me some more details: > > Is this an nfs socket? Do you by accident know if this socket went > through xs_reclassify_socket at any point? We do hold the appropriate > locks at that point but I fear that the lockdep reinitialization > confused lockdep.
It wasn't an NFS socket, as NFS wasn't even active at the time. I'm reasonably sure that multiple sockets were in play, given that tcp_v6_rcv and udpv6_queue_rcv_skb were both implicated. I strongly suspect that pretty much any IPv6 traffic could do it - the frequency dropped off quite a bit when I closed firefox, which is usually a heavy network hitter on my laptop.
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