git: network - Fix race in accept() - try #2
commit 5217bcbc2e93291d234b66b766c4801140f9d4f1
Author: Matthew Dillon <dillon@apollo.backplane.com>
Date: Fri Sep 17 01:45:04 2010 -0700
network - Fix race in accept() - try #2
* The last fix wasn't good enough. Really try to fix it this time. Use
a pool token and validate so_head after acquiring it to deal with races,
interlock against 0-ref races (sockets can be on the so_comp/so_incomp
queues with 0 references), and use it for the accept predicate.
Summary of changes:
sys/kern/uipc_socket.c | 32 ++++++++++++++++++++++++--------
sys/kern/uipc_socket2.c | 26 +++++++++++++++++++-------
sys/kern/uipc_syscalls.c | 10 +++++++---
sys/netgraph/ksocket/ng_ksocket.c | 6 +++---
4 files changed, 53 insertions(+), 21 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/5217bcbc2e93291d234b66b766c4801140f9d4f1
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