If socket has been connected and shutted down, it may get disconnected then leaving shutdown mode set inside (which we pull into image). On restore we should not fail when calling shutdown over -- the kernel has a hack to inform listeners even on closed sockets. From userspace perspective to reuse such socket one have to connect it back, so should be safe.
https://jira.sw.ru/browse/PSBM-68062 Signed-off-by: Cyrill Gorcunov <gorcu...@virtuozzo.com> --- criu/sk-inet.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/criu/sk-inet.c b/criu/sk-inet.c index d44fb08..53918e8 100644 --- a/criu/sk-inet.c +++ b/criu/sk-inet.c @@ -735,9 +735,14 @@ static int open_inet_sk(struct file_desc *d, int *new_fd) (ie->proto == IPPROTO_UDP || ie->proto == IPPROTO_UDPLITE)) { if (shutdown(sk, sk_decode_shutdown(ie->shutdown))) { - pr_perror("Can't shutdown socket into %d", + if (ie->state != TCP_CLOSE && errno != ENOTCONN) { + pr_perror("Can't shutdown socket into %d", sk_decode_shutdown(ie->shutdown)); - goto err; + goto err; + } else { + pr_debug("Called shutdown on closed socket, proto %d ino %#x", + ie->proto, ie->ino); + } } } -- 2.7.5 _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel
