diff options
Diffstat (limited to 'sys/kern/subr_mbuf.c')
| -rw-r--r-- | sys/kern/subr_mbuf.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/sys/kern/subr_mbuf.c b/sys/kern/subr_mbuf.c index 5d593e6..5d624f6 100644 --- a/sys/kern/subr_mbuf.c +++ b/sys/kern/subr_mbuf.c @@ -1380,6 +1380,11 @@ m_free(struct mbuf *mb) int cchnum; short persist = 0; +#ifdef INVARIANTS + if (mb->m_flags & M_FREELIST) + panic("m_free detected a mbuf double-free"); + mb->m_flags |= M_FREELIST; +#endif if ((mb->m_flags & M_PKTHDR) != 0) m_tag_delete_chain(mb, NULL); nb = mb->m_next; @@ -1422,6 +1427,11 @@ m_freem(struct mbuf *mb) short persist; while (mb != NULL) { +#ifdef INVARIANTS + if (mb->m_flags & M_FREELIST) + panic("m_freem detected a mbuf double-free"); + mb->m_flags |= M_FREELIST; +#endif if ((mb->m_flags & M_PKTHDR) != 0) m_tag_delete_chain(mb, NULL); persist = 0; |
