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From: Tracy R Reed <treed_at_ultraviolet.org>
subject: kernel oops
Date: Mon, 26 Nov 2001 11:59:36 -0800

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I've had 3 oopses in the last week that I've been playing with selinux. ksymoops decoded results are attached. The first occurred when I was trying to reload the policy:

Nov 21 19:33:24 bench3 kernel: ss:  loading policy configuration from /ss_policy
Nov 21 19:33:24 bench3 kernel: security:  4 users, 5 roles, 349 types
Nov 21 19:33:24 bench3 kernel: security:  29 classes, 60594 rules
Nov 21 19:33:24 bench3 kernel: Unable to handle kernel paging request at virtual address 465ec21c

The system was still useable but attempts to reload the policy were hanging so I rebooted.

The other two happened when nobody was doing anything with the system except cron running the normal stuff.

Nov 22 14:40:00 tracy kernel: task_precondition: assigning context system_u:system_r:crond_t to pid 1620 exe=/usr/sbin/crond Nov 22 14:40:00 tracy kernel: Unable to handle kernel paging request at virtual address 00732528

Nov 22 14:41:00 tracy kernel: <1>Unable to handle kernel paging request at virtual address a8d4b5ec

After this the system was hung solid, no ping or anything.

-- 
Tracy Reed      http://www.ultraviolet.org





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text/plain attachment: oops1.txt



text/plain attachment: oops2.txt



text/plain attachment: oops3.txt



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From: Stephen Smalley <sds_at_tislabs.com>
subject: Re: kernel oops
Date: Mon, 26 Nov 2001 14:27:28 -0500 (EST)

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On Mon, 26 Nov 2001, Tracy R Reed wrote:

> I've had 3 oopses in the last week that I've been playing with selinux.

Looks like you're still using the 2.4.12-based SELinux rather than the latest release, and it doesn't look like you've applied patches that have been posted since that release. Make sure that you've at least applied these patches:

http://marc.theaimsgroup.com/?l=selinux&m=100378165408266&w=2 http://marc.theaimsgroup.com/?l=selinux&m=100445617604999&w=2

The first kernel Oops definitely looked like the load_policy bug fixed by the second patch above. I'm not sure about the latter two Oopses - I haven't seen them, and they weren't in SELinux code. Could be a side effect of one of the two bugs for which we've posted patches.

If you upgrade to the latest release, be sure to apply the selinux_inode_delete patch.

--
Stephen D. Smalley, NAI Labs
ssmalley@nai.com






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