Date: Fri, 29 Sep 2006 03:07:41 +0000 (UTC) From: Brooks Davis <brooks@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sbin/dhclient bpf.c Message-ID: <200609290307.k8T37g6s001567@repoman.freebsd.org>
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brooks 2006-09-29 03:07:41 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_6)
sbin/dhclient bpf.c
Log:
MFC rev 1.7
It is possible for bpf to return a length such that:
length != BPF_WORDALIGN(length)
This meeans that it is possible for this to be true:
interface->rbuf_offset > interface->rbuf_len
Handle this case in the test for running out of packets. While
OpenBSD's solution of setting interface->rbuf_len to
BPF_WORDALIGN(length) is safe due to the size of the buffer, I think
this solution results in less hidden assumptions.
This should fix the problem of dhclient running away and consuming 100%
CPU.
PR: bin/102226
Submitted by: Joost Bekkers <joost at jodocus.org>
Approved by: re (ken)
Revision Changes Path
1.2.2.4 +1 -1 src/sbin/dhclient/bpf.c
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