flow_dissector: fix ipv6 dst, hop-by-hop and routing ext hdrs

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__skb_header_pointer() returns a pointer that must be checked.

Fixes infinite loop reported by Alexei, and add __must_check to
catch these errors earlier.

Fixes: 6a74fcf426 ("flow_dissector: add support for dst, hop-by-hop and routing ext hdrs")
Reported-by: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Tested-by: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Eric Dumazet 2015-06-12 19:31:32 -07:00 • committed by David S. Miller

parent 5b173cf927

commit 1e98a0f08a

2 changed files with 9 additions and 6 deletions

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9

include/linux/skbuff.h

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