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in6_mc_get: Fix recursion on if_addr_lock on malloc failure

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Analogously to r291040, in6_mc_get recurses on if_addr_lock if the
M_NOWAIT allocation fails.  The fix is the same.

Suggested by:	Andrey V. Elsukov
Reviewed by:	jhb (ip4 version)
Sponsored by:	EMC / Isilon Storage Division
Differential Revision:	https://reviews.freebsd.org/D4138 (ip4 version)
This commit is contained in:
Conrad Meyer 2015-11-19 00:27:26 +00:00
parent 749f65e3e3
commit 55faae77fa
1 changed files with 2 additions and 2 deletions
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4
sys/netinet6/in6_mcast.c
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@ -469,9 +469,9 @@ in6_mc_get(struct ifnet *ifp, const struct in6_addr *group,
*/
inm = malloc(sizeof(*inm), M_IP6MADDR, M_NOWAIT | M_ZERO);
if (inm == NULL) {
IF_ADDR_WUNLOCK(ifp);
if_delmulti_ifma(ifma);
error = ENOMEM;
goto out_locked;
return (ENOMEM);
}
inm->in6m_addr = *group;
inm->in6m_ifp = ifp;