Author: csjp
Date: Fri Jun 3 14:57:38 2011
New Revision: 222654
URL: http://svn.freebsd.org/changeset/base/222654
Log:
Explicitly initialize the packet buffer to NULL after we unmap the zero copy
buffers. This fixes a segfault on exit due to calling free on a bogus
pointer.
This should be considered a temporary stop gap fix to avoid the crash. The
complete fix re-shuffles the initializations of some of the clean-up pointers.
The details of the fix can be found in the libpcap git repository:
commit bc8209b71e928870b0f172d43b174ab27ba24394
Proded by: kevlo, rpaulo
MFC after: 2 weeks
Submitted by: Anton Yuzhaninov
Modified:
head/contrib/libpcap/pcap-bpf.c
Modified: head/contrib/libpcap/pcap-bpf.c
==============================================================================
--- head/contrib/libpcap/pcap-bpf.c Fri Jun 3 14:34:38 2011
(r222653)
+++ head/contrib/libpcap/pcap-bpf.c Fri Jun 3 14:57:38 2011
(r222654)
@@ -1281,6 +1281,7 @@ pcap_cleanup_bpf(pcap_t *p)
munmap(p->md.zbuf1, p->md.zbufsize);
if (p->md.zbuf2 != MAP_FAILED && p->md.zbuf2 != NULL)
munmap(p->md.zbuf2, p->md.zbufsize);
+ p->buffer = NULL;
}
#endif
if (p->md.device != NULL) {
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