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deal with malloc failures

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Noticed by:	Coverity Prevent analysis tool
Together with:	mdodd
This commit is contained in:
Sam Leffler 2005-03-26 22:20:22 +00:00
parent 1a82818b98
commit 5309f84168
1 changed files with 16 additions and 7 deletions
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23
sys/netinet/igmp.c
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@ -151,10 +151,11 @@ find_rti(struct ifnet *ifp)
return rti;
}
}
/*
* XXXRW: return value of malloc not checked, despite M_NOWAIT.
*/
MALLOC(rti, struct router_info *, sizeof *rti, M_IGMP, M_NOWAIT);
if (rti == NULL) {
IGMP_PRINTF( "[igmp.c, _find_rti] --> no memory for entry\n");
return NULL;
}
rti->rti_ifp = ifp;
rti->rti_type = IGMP_V2_ROUTER;
rti->rti_time = 0;
@ -245,6 +246,11 @@ igmp_input(register struct mbuf *m, int off)
mtx_lock(&igmp_mtx);
rti = find_rti(ifp);
if (rti == NULL) {
mtx_unlock(&igmp_mtx);
m_freem(m);
return;
}
rti->rti_type = IGMP_V1_ROUTER;
rti->rti_time = 0;
mtx_unlock(&igmp_mtx);
@ -369,11 +375,14 @@ igmp_joingroup(struct in_multi *inm)
mtx_lock(&igmp_mtx);
inm->inm_rti = find_rti(inm->inm_ifp);
mtx_unlock(&igmp_mtx);
igmp_sendpkt(inm, inm->inm_rti->rti_type, 0);
inm->inm_timer = IGMP_RANDOM_DELAY(
if (inm->inm_rti != NULL) {
igmp_sendpkt(inm, inm->inm_rti->rti_type, 0);
inm->inm_timer = IGMP_RANDOM_DELAY(
IGMP_MAX_HOST_REPORT_DELAY*PR_FASTHZ);
inm->inm_state = IGMP_IREPORTEDLAST;
igmp_timers_are_running = 1;
inm->inm_state = IGMP_IREPORTEDLAST;
igmp_timers_are_running = 1;
}
/* XXX handling of failure case? */
}
splx(s);
}