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Bug 448872

Summary: When ima_appraisal_tcb is enabled, system oops'es in bootmisc
Product: Gentoo Linux Reporter: Sven Vermeulen (RETIRED) <swift>
Component: HardenedAssignee: Sven Vermeulen (RETIRED) <swift>
Severity: normal CC: hardened-kernel+disabled
Priority: Normal    
Version: unspecified   
Hardware: All   
OS: Linux   
Whiteboard: integrity
Package list:
Runtime testing required: ---
Attachments: Kernel oops

Description Sven Vermeulen (RETIRED) gentoo-dev 2012-12-27 16:24:43 UTC
In the /etc/init.d/bootmisc file, the following activity is ran that generates an OOPS in the kernel (3.7-hardened):

dmesg > /var/log/dmesg

Running 'dmesg > /tmp/dmesg' doesn't trigger the oops, nor does moving /tmp/dmesg to /var/log/dmesg. Commenting out the activity (or replacing it with the following excerpt) makes the system behave as needed (no oops).

dmesg > /tmp/dmesg
mv /tmp/dmesg /var/log/dmesg
chcon -t var_log_t /var/log/dmesg

Oops will be attached.

Reproducible: Always
Comment 1 Sven Vermeulen (RETIRED) gentoo-dev 2012-12-27 16:25:16 UTC
Created attachment 333488 [details]
Kernel oops
Comment 2 Sven Vermeulen (RETIRED) gentoo-dev 2012-12-27 16:25:49 UTC
@hardened-kernel team: adding you in Cc just in case it reminds you of something
Comment 3 Sven Vermeulen (RETIRED) gentoo-dev 2014-06-01 12:09:31 UTC
Doesn't come up anymore