[FIB]: full_children & empty_children should be uint, not ushort

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If declared as unsigned short, these fields can overflow, and whole
trie logic is broken. I could not make the machine crash, but some
tnode can never be freed.

Note for 64 bit arches : By reordering t_key and parent in [node,
leaf, tnode] structures, we can use 32 bits hole after t_key so that
sizeof(struct tnode) doesnt change after this patch.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Robert Olsson <robert.olsson@its.uu.se>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Eric Dumazet 2008-01-13 22:31:44 -08:00 • committed by David S. Miller

parent f16f3026db

commit 8d96544475

1 changed files with 12 additions and 13 deletions

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net/ipv4/fib_trie.c

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