rwatson 2008-03-01 11:50:00 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_7)
sys/netinet tcp_usrreq.c
Log:
Merge tcp_usrreq.c:1.166 from HEAD to RELENG_7:
In tcp_ctloutput(), don't hold the inpcb lock over sooptcopyin(), rather,
drop the lock and then re-acquire it, revalidating TCP connection state
assumptions when we do so. This avoids a potential lock order reversal
(and potential deadlock, although none have been reported) due to the
inpcb lock being held over a page fault.
PR: 102752
Reviewed by: bz
Reported by: Václav Haisman <v dot haisman at sh dot cvut dot cz>
Revision Changes Path
1.163.2.3 +55 -25 src/sys/netinet/tcp_usrreq.c
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