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MFC r179971:

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In case of interface initialization failure remove struct in_ifaddr* from
in_ifaddrhashtbl in in_ifinit because error handler in in_control removes
entries only for AF_INET addresses. If in_ifinit is called for the cloned
inteface that has just been created its address family is not AF_INET and
therefor LIST_REMOVE is not called for respective LIST_INSERT_HEAD and
freed entries remain in in_ifaddrhashtbl and lead to memory corruption.

PR:		kern/124384
MFC after:	3 weeks
This commit is contained in:
gonzo 2008-07-19 13:15:51 +00:00
parent f48f25f7f6
commit 6761476538
1 changed files with 8 additions and 0 deletions
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8
sys/netinet/in.c
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@ -715,6 +715,14 @@ in_ifinit(ifp, ia, sin, scrub)
if (ia->ia_addr.sin_family == AF_INET)
LIST_INSERT_HEAD(INADDR_HASH(
ia->ia_addr.sin_addr.s_addr), ia, ia_hash);
else
/*
* If oldaddr family is not AF_INET (e.g.
* interface has been just created) in_control
* does not call LIST_REMOVE, and we end up
* with bogus ia entries in hash
*/
LIST_REMOVE(ia, ia_hash);
return (error);
}
}