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Babel: Seqno requests are properly decoupled from neighbors when the underlying interface disappears

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When an interface disappears, all the neighbors are freed as well. Seqno
requests were anyway not decoupled from them, leading to strange
segfaults. This fix adds a proper seqno request list inside neighbors to
make sure that no pointer to neighbor is kept after free.
This commit is contained in:
Maria Matejka
2021-05-30 13:07:16 +02:00
parent 10498b8e89
commit ebd5751cde
3 changed files with 22 additions and 13 deletions
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2
lib/lists.h
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@@ -59,6 +59,8 @@ typedef union list { /* In fact two overlayed nodes */
/* WALK_LIST_FIRST supposes that called code removes each processed node */
#define WALK_LIST_FIRST(n,list) \
while(n=HEAD(list), (NODE (n))->next)
#define WALK_LIST_FIRST2(n,pos,list) \
while(n=SKIP_BACK(typeof(*n),pos,HEAD(list)), (n)->pos.next)
#define WALK_LIST_BACKWARDS(n,list) for(n=TAIL(list);(NODE (n))->prev; \
n=(void *)((NODE (n))->prev))
#define WALK_LIST_BACKWARDS_DELSAFE(n,prv,list) \