Messages in this thread | | | Date | Thu, 7 Oct 2004 14:59:45 -0400 (EDT) | From | Ingo Molnar <> | Subject | Re: 2.6.9-rc2-mm4-VP-S7 - ksoftirq and selinux oddity |
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On Thu, 7 Oct 2004 Valdis.Kletnieks@vt.edu wrote:
> audit(1097111349.782:0): avc: denied { recv_msg } for pid=2 comm=ksoftirqd/0 saddr=127.0.0.1 src=25 daddr=127.0.0.1 dest=59639 netif=lo scontext=system_u:system_r:fsdaemon_t tcontext=system_u:object_r:smtp_port_t tclass=tcp_socket > > At least for the recv_msg error, I *think* the message is generated > because when we get into net/socket.c, we call security_socket_recvmsg() > in __recv_msg() - and (possibly only when we have the VP patch applied?) > at that point we're in a softirqd context rather than the context of the > process that will finally receive the packet, so the SELinux code ends > up checking the wrong credentials. I've not waded through the code > enough to figure out exactly where the two tcp_recv messages are > generated, but I suspect the root cause is the same for all three > messages.
that would be a problem in the upstream kernel too - softirq load can execute in any process context (and in ksoftirqd too).
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