Date: Sat, 12 Mar 2011 09:41:25 +0000 (UTC) From: "Bjoern A. Zeeb" <bz@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/netinet6 nd6_nbr.c Message-ID: <201103120941.p2C9fjfn077331@repoman.freebsd.org>
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bz 2011-03-12 09:41:25 UTC
FreeBSD src repository
Modified files:
sys/netinet6 nd6_nbr.c
Log:
SVN rev 219562 on 2011-03-12 09:41:25Z by bz
Make sure the locally cached value of rt->rt_gateway stays stable,
even after dropping the reference and unlocking. Previously we
have dereferenced a NULL pointer (after r121765).
Simply unlocking after the block does not work either because of
lock ordering (see r121765) and in addition we would still hold
a pointer to something that might be gone by the time we access it.
Thus take a copy of the value rather than just caching the pointer.
PR: kern/151908
Submitted by: chenyl (netstar2008 126.com) (initial version)
MFC after: 2 weeks
Revision Changes Path
1.79 +14 -7 src/sys/netinet6/nd6_nbr.c
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