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Index: head/sys/netinet/in.c
===================================================================
--- head/sys/netinet/in.c
+++ head/sys/netinet/in.c
@@ -1399,6 +1399,17 @@
else
LLE_RLOCK(lle);
+ /*
+ * If the afdata lock is not held, the LLE may have been unlinked while
+ * we were blocked on the LLE lock. Check for this case.
+ */
+ if (__predict_false((lle->la_flags & LLE_LINKED) == 0)) {
+ if (flags & LLE_EXCLUSIVE)
+ LLE_WUNLOCK(lle);
+ else
+ LLE_RUNLOCK(lle);
+ return (NULL);
+ }
return (lle);
}
Index: head/sys/netinet6/in6.c
===================================================================
--- head/sys/netinet6/in6.c
+++ head/sys/netinet6/in6.c
@@ -2342,6 +2342,18 @@
LLE_WLOCK(lle);
else
LLE_RLOCK(lle);
+
+ /*
+ * If the afdata lock is not held, the LLE may have been unlinked while
+ * we were blocked on the LLE lock. Check for this case.
+ */
+ if (__predict_false((lle->la_flags & LLE_LINKED) == 0)) {
+ if (flags & LLE_EXCLUSIVE)
+ LLE_WUNLOCK(lle);
+ else
+ LLE_RUNLOCK(lle);
+ return (NULL);
+ }
return (lle);
}

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