diff options
| author | andre <andre@FreeBSD.org> | 2005-11-04 17:20:53 +0000 |
|---|---|---|
| committer | andre <andre@FreeBSD.org> | 2005-11-04 17:20:53 +0000 |
| commit | 438cb7bde701ce0b9a4dffe748bd0f98a9621770 (patch) | |
| tree | 6fd7fe096545c90fb4216ae8f8172a94f08c19a3 /sys/kern/uipc_mbuf.c | |
| parent | 1aceee70b0e0f10ab5c1556417c9a033f8342137 (diff) | |
| download | FreeBSD-src-438cb7bde701ce0b9a4dffe748bd0f98a9621770.zip FreeBSD-src-438cb7bde701ce0b9a4dffe748bd0f98a9621770.tar.gz | |
Fix a logic error introduced with mandatory mbuf cluster refcounting and
freeing of mbufs+clusters back to the packet zone.
Diffstat (limited to 'sys/kern/uipc_mbuf.c')
| -rw-r--r-- | sys/kern/uipc_mbuf.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/kern/uipc_mbuf.c b/sys/kern/uipc_mbuf.c index 9d90e01..4e0f2d9 100644 --- a/sys/kern/uipc_mbuf.c +++ b/sys/kern/uipc_mbuf.c @@ -215,9 +215,11 @@ mb_free_ext(struct mbuf *m) /* Free attached storage if this mbuf is the only reference to it. */ if (*(m->m_ext.ref_cnt) == 1 || - atomic_fetchadd_int(m->m_ext.ref_cnt, -1) == 1) { + atomic_fetchadd_int(m->m_ext.ref_cnt, -1) == 0) { switch (m->m_ext.ext_type) { - case EXT_CLUSTER: + case EXT_CLUSTER: /* The packet zone is special. */ + if (*(m->m_ext.ref_cnt) == 0) + *(m->m_ext.ref_cnt) = 1; uma_zfree(zone_pack, m); return; /* Job done. */ break; |
