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Message-ID: <54F123C4.2030907@vultr.com> Date: Fri, 27 Feb 2015 21:11:16 -0500 From: Brian Rak <brak@...tr.com> To: Eric Dumazet <eric.dumazet@...il.com> CC: netdev@...r.kernel.org Subject: Re: Repeatable IPv6 crash in 3.19.0-1 On 2/27/2015 9:03 PM, Eric Dumazet wrote: > On Fri, 2015-02-27 at 18:01 -0800, Eric Dumazet wrote: >> On Fri, 2015-02-27 at 20:54 -0500, Brian Rak wrote: >> >>> Wow, that was *much* faster then I was expecting, thanks a bunch! >>> >>> I can confirm that resolves the issue.. I've tested this and it fixes >>> the issue perfectly. I've been able to put a whole bunch of IPv6 >>> traffic through the interface now, whereas before even a minor amount of >>> traffic would crash the host. >>> >>> Thanks again! >> >> Interesting... >> >> Had a prior version of linux kernel been fine ? > > Or maybe you recently switched on this config option ? > > CONFIG_DEBUG_PAGEALLOC=y > > > We've only recently started using this veth/macvtap combo, so it's possible this has been around for awhile and we just hadn't noticed. I don't have any info on older kernels currently. I *think* I've seen crashes on 3.17.1, but I didn't save any stack traces, so I can't be sure. CONFIG_DEBUG_PAGEALLOC is not set, and never has been. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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