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Re: [Linux-ima-user] Fwd: ima on x86_64?
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From: Reiner S. <sa...@us...> - 2008-02-26 17:59:42
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Thanks for pointing this out! (Your earlier e-mail must have gotten lost in my mailbox.) I don't have any 64bit systems right now running IMA. Any input from those who do have access is very helpful. Reiner __________________________________________________________ Reiner Sailer, Research Staff Member, Secure Systems Department IBM T J Watson Research Ctr, 19 Skyline Drive, Hawthorne NY 10532 Phone: 914 784 6280 (t/l 863) Fax: 914 784 6205, sa...@us... http://www.research.ibm.com/people/s/sailer/ From: "Chaskiel Grundman" <cgr...@gm...> To: lin...@li... Date: 02/26/2008 12:47 PM Subject: [Linux-ima-user] Fwd: ima on x86_64? (I have since figured out that enabling CONFIG_DEBUG_SLAB works around the crash, but I'd still like to know if other people are using ima on x86_64 or have had this problem) ---------- Forwarded message ---------- From: Chaskiel Grundman <cgr...@gm...> Date: Fri, Feb 22, 2008 at 3:49 PM Subject: ima on x86_64? To: lin...@li... I have been trying to get an ima-enabled 2.6.22 kernel working on my x86_64 laptop. However, it tends to crash during modprobe operations that the initramfs does. There are two common errors: one is a page fault in ima_lookup_measure_entry. it appears that a bad pointer is found in the list. The other kind of fault occurs in various parts of the vmalloc code. These are more variable, but the usual case is that a general protection fault occurs in __free_pages or __get_vm_area_node because a pointer has invalid syntax (current x86_64 cpu's don't have true 64 bit pointers. the upper 17 bits of pointers must either be all 0 or all 1) Neither problem occurs if the kernel is booted with ima=0 instead of ima=1. Is anyone using ima on x86_64? What kernel version/ima patch? Thanks ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Linux-ima-user mailing list Lin...@li... https://lists.sourceforge.net/lists/listinfo/linux-ima-user |
