| To: | Stephen Smalley <sds@xxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: 2.6.9-rc2-mm4-VP-S7 - ksoftirq and selinux oddity |
| From: | Luke Kenneth Casson Leighton <lkcl@xxxxxxxx> |
| Date: | Fri, 8 Oct 2004 12:37:10 +0100 |
| Cc: | Valdis Kletnieks <Valdis.Kletnieks@xxxxxx>, lkml <linux-kernel@xxxxxxxxxxxxxxx>, SELinux@xxxxxxxxxxxxx, Ingo Molnar <mingo@xxxxxxxxxx>, netdev@xxxxxxxxxxx, linux-net@xxxxxxxxxxxxxxx |
| In-reply-to: | <1097234322.16641.3.camel@moss-spartans.epoch.ncsc.mil> |
| Mail-followup-to: | Stephen Smalley <sds@xxxxxxxxxxxxxx>, Valdis Kletnieks <Valdis.Kletnieks@xxxxxx>, lkml <linux-kernel@xxxxxxxxxxxxxxx>, SELinux@xxxxxxxxxxxxx, Ingo Molnar <mingo@xxxxxxxxxx>, netdev@xxxxxxxxxxx, linux-net@xxxxxxxxxxxxxxx |
| References: | <200410070542.i975gkHV031259@turing-police.cc.vt.edu> <1097157367.13339.38.camel@moss-spartans.epoch.ncsc.mil> <20041008093154.GA5089@lkcl.net> <1097234322.16641.3.camel@moss-spartans.epoch.ncsc.mil> |
| Sender: | netdev-bounce@xxxxxxxxxxx |
| User-agent: | Mutt/1.5.5.1+cvs20040105i |
On Fri, Oct 08, 2004 at 07:18:42AM -0400, Stephen Smalley wrote: > On Fri, 2004-10-08 at 05:31, Luke Kenneth Casson Leighton wrote: > > an alternative possible solution is to get the packet _out_ from > > the interrupt context and have the aux pid comm exe information added. > > No, the network permission checks are intentionally layered to match the > network protocol implementation. There is a process-to-socket check > performed in process context when the data is received from the socket > by an actual process, but there is also the socket-to-netif/node/port > check performed in softirq context when the packet is received on the > socket from the network. ah. oh well! |
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