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Message-ID: <CAGHK07DgBuVk==rJrc2gWa311DCMJK9NdDDk8OJAfRb=YLigBg@mail.gmail.com> Date: Tue, 11 Aug 2015 15:53:18 +1000 From: Jonathan Maxwell <jmaxwell37@...il.com> To: David Miller <davem@...emloft.net> Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Jon Maxwell <jmaxwell@...hat.com> Subject: Re: [PATCH net] netconsole: Check for carrier before calling netpoll_send_udp() > What if the carrier check passes, and then the chip reset starts on > another cpu? You'll have the same problem. Okay, let me see if I can come up with a better way to mitigate this. On Tue, Aug 11, 2015 at 2:22 PM, David Miller <davem@...emloft.net> wrote: > From: Jon Maxwell <jmaxwell37@...il.com> > Date: Tue, 11 Aug 2015 11:32:26 +1000 > >> We have seen a few crashes recently where a NIC is getting >> reset for some reason and then the driver or another module calls >> printk() which invokes netconsole. Netconsole then calls the >> adapter specific poll routine via netpoll which crashes because >> the adapter is resetting and its structures are being reinitialized. > > This isn't a fix. > > What if the carrier check passes, and then the chip reset starts on > another cpu? You'll have the same problem. > > I'm not applying this, sorry. -- 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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