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Date: Tue, 7 Apr 2015 10:57:32 +0200 From: Steffen Klassert <steffen.klassert@...unet.com> To: Alexey Dobriyan <adobriyan@...il.com> CC: <davem@...emloft.net>, <mike@...mi.net>, <netdev@...r.kernel.org>, <herbert@...dor.apana.org.au> Subject: Re: [PATCH] xfrm: fix xfrm_input/xfrm_tunnel_check oops On Thu, Apr 02, 2015 at 10:58:24AM +0300, Alexey Dobriyan wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=95211 > > Commit 70be6c91c86596ad2b60c73587880b47df170a41 > ("xfrm: Add xfrm_tunnel_skb_cb to the skb common buffer") added check > which dereferences ->outer_mode too early but larval SAs don't have > this pointer set (yet). So check for tunnel stuff later. > > Mike Noordermeer reported this bug and patiently applied all the debugging. > > Technically this is remote-oops-in-interrupt-context type of thing. > > BUG: unable to handle kernel NULL pointer dereference at 0000000000000034 > IP: [<ffffffff8150dca2>] xfrm_input+0x3c2/0x5a0 > ... > [<ffffffff81500fc6>] ? xfrm4_esp_rcv+0x36/0x70 > [<ffffffff814acc9a>] ? ip_local_deliver_finish+0x9a/0x200 > [<ffffffff81471b83>] ? __netif_receive_skb_core+0x6f3/0x8f0 > ... > > RIP [<ffffffff8150dca2>] xfrm_input+0x3c2/0x5a0 > Kernel panic - not syncing: Fatal exception in interrupt > > Signed-off-by: Alexey Dobriyan <adobriyan@...il.com> Good catch! Applied to the ipsec tree, thanks everyone! -- 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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