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Date: Thu, 27 Nov 2014 20:26:57 +0100 From: Mathias Krause <minipli@...glemail.com> To: Дениска-редиска <slim@...ox.lv> Cc: Daniel Borkmann <dborkman@...hat.com>, linux-net@...r.kernel.org, netdev@...r.kernel.org, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Florian Westphal <fw@...len.de> Subject: Re: bug in networking code causes GPF On 27 November 2014 at 16:41, Дениска-редиска <slim@...ox.lv> wrote: > well, I will try to disable CONFIG_PAX_MEMORY_SANITIZE. > Will take some time to make sure that this resolve the issue That should fix the issue for you. You could also try to add "pax_sanitize_slab=0" to the kernel command line to disable slab sanitization. > Цитирование Daniel Borkmann <dborkman@...hat.com> : >> On 11/27/2014 02:35 PM, Дениска-редиска wrote: >> > [...] >> > [354497.932330] ... RBX: fefefefefefefefe ... >> > [...] >> > [354497.934903] Code: c2 85 d2 49 8b 86 d0 04 00 00 74 14 66 45 85 ff 75 0e 65 ff 40 04 e8 85 f6 a4 ff 48 89 d8 eb 69 65 ff 00 48 8b 1b f6 c3 01 75 0f <8b> 43 10 39 45 00 b8 00 00 00 00 74 83 eb 9d 48 d1 eb 4c 39 eb That's: mov 0x10(%rbx),%eax RBX contains the PaX sanitize pattern, that's the reason for the #GP. So this is very likely the bug Daniel mentioned. Please update to a recent grsec kernel to get this issue fixed. It's fixed in the stable patches as well as in the test patch. Regards, Mathias -- 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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