Messages in this thread |  | | Date | Mon, 11 Aug 2008 16:40:24 +0800 | From | Eugene Teo <> | Subject | Re: OOPS, ip -f inet6 route get fec0::1, linux-2.6.26, ip6_route_output, rt6_fill_node+0x175 |
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Brian Haley wrote: > Alexey Dobriyan wrote: >> On Thu, Aug 07, 2008 at 07:00:56PM +0200, John Gumb wrote: >>> Scenario: no ipv6 default route set. >> >>> # ip -f inet6 route get fec0::1 >>> >>> BUG: unable to handle kernel NULL pointer dereference at 00000000 >>> IP: [<c0369b85>] rt6_fill_node+0x175/0x3b0 >>> EIP is at rt6_fill_node+0x175/0x3b0 >> >> 0xffffffff80424dd3 is in rt6_fill_node (net/ipv6/route.c:2191). >> 2186 } else >> 2187 #endif >> 2188 NLA_PUT_U32(skb, RTA_IIF, iif); >> 2189 } else if (dst) { >> 2190 struct in6_addr saddr_buf; >> 2191 ====> if >> (ipv6_dev_get_saddr(ip6_dst_idev(&rt->u.dst)->dev, >> ^^^^^^^^^^^^^^^^^^^^^^^^ >> NULL >> >> 2192 dst, 0, &saddr_buf) == 0) >> 2193 NLA_PUT(skb, RTA_PREFSRC, 16, >> &saddr_buf); >> 2194 } > > The commit that changed this can't be reverted easily, but the patch > below works for me. > > Fix NULL de-reference in rt6_fill_node() when there's no IPv6 input > device present in the dst entry. > > Signed-off-by: Brian Haley <brian.haley@hp.com>
Cc: Stable <stable@kernel.org>
Eugene
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