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Message-ID: <1489362.AtetvSCXN1@h2o.as.studentenwerk.mhn.de> Date: Thu, 07 May 2015 00:11:20 +0200 From: Wolfgang Walter <linux@...m.de> To: Cong Wang <xiyou.wangcong@...il.com> Cc: LKML <linux-kernel@...r.kernel.org>, Hannes Frederic Sowa <hannes@...essinduktion.org>, Linux Kernel Network Developers <netdev@...r.kernel.org> Subject: Re: kernel >= 4.0: crashes when using traceroute6 with isatap Am Mittwoch, 6. Mai 2015, 11:15:18 schrieben Sie: > (Cc'ing netdev.) > > On Sat, May 2, 2015 at 5:29 AM, Wolfgang Walter <linux@...m.de> wrote: > > Am Samstag, 2. Mai 2015, 02:16:36 schrieb Wolfgang Walter: > >> Hello, > >> > >> kernel 4.0 (and 4.0.1) crashes immediately when I use traceroute6 with an > >> isatap-tunnel. > > > > I did some further tests. To trigger the crash you need > > > > * isatap-tunnel (probably any sit-tunnel will do it) > > * raw-socket > > * udp > > > > Using icmpv6 or tcp i.e. does not trigger it. > > Do you have a script to reproduce it? > > > Thanks for the bug report! You need a isatap-server with say ipv4-address $X Then, on host with 4.0, start isatapd: isatapd --mtu 1280 $X then do traceroute6 www.google.de Regards, -- Wolfgang Walter Studentenwerk München Anstalt des öffentlichen Rechts -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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