FreeBSD Bugzilla – Attachment 98282 Details for
Bug 137145
[mbuf] [patch] Reference count computing isn't correct when more than one threads call function m_copypacket
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[patch]
file.diff
file.diff (text/plain), 578 bytes, created by
Guixian Lin
on 2009-07-26 04:20:01 UTC
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Description:
file.diff
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Creator:
Guixian Lin
Created:
2009-07-26 04:20:01 UTC
Size:
578 bytes
patch
obsolete
>--- uipc_mbuf.c.org 2009-07-26 10:58:56.000000000 +0800 >+++ uipc_mbuf.c 2009-07-26 10:59:27.000000000 +0800 >@@ -317,10 +317,7 @@ mb_dupcl(struct mbuf *n, struct mbuf *m) > KASSERT(m->m_ext.ref_cnt != NULL, ("%s: ref_cnt not set", __func__)); > KASSERT((n->m_flags & M_EXT) == 0, ("%s: M_EXT set", __func__)); > >- if (*(m->m_ext.ref_cnt) == 1) >- *(m->m_ext.ref_cnt) += 1; >- else >- atomic_add_int(m->m_ext.ref_cnt, 1); >+ atomic_add_int(m->m_ext.ref_cnt, 1); > n->m_ext.ext_buf = m->m_ext.ext_buf; > n->m_ext.ext_free = m->m_ext.ext_free; > n->m_ext.ext_args = m->m_ext.ext_args;
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bug 137145
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