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udp_ctlinput: don't refer to unpcb after we drop the lock

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Reported by: pho@
This commit is contained in:
Matt Macy 2018-06-21 06:10:52 +00:00
parent 6a75ef5817
commit 46374cbf54
1 changed files with 7 additions and 6 deletions
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13
sys/netinet/udp_usrreq.c
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@ -802,14 +802,15 @@ udp_common_ctlinput(int cmd, struct sockaddr *sa, void *vip,
INPLOOKUP_WILDCARD | INPLOOKUP_RLOCKPCB, NULL);
if (inp != NULL) {
struct udpcb *up;
void *ctx;
udp_tun_icmp_t func;
up = intoudpcb(inp);
if (up->u_icmp_func != NULL) {
INP_RUNLOCK(inp);
(*up->u_icmp_func)(cmd, sa, vip, up->u_tun_ctx);
} else {
INP_RUNLOCK(inp);
}
ctx = up->u_tun_ctx;
func = up->u_icmp_func;
INP_RUNLOCK(inp);
if (func != NULL)
(*func)(cmd, sa, vip, ctx);
}
}
} else