Hi, I was just shown this[1] on Xen from an Ubuntu bug report[2]. [ 1.230382] NX-protecting the kernel data: 3884k [ 1.231002] BUG: unable to handle kernel paging request at c1782ae0 ... [ 1.231145] Call Trace: [ 1.231152] [<c0138481>] ? __change_page_attr+0x2c1/0x370 [ 1.231161] [<c02163a1>] ? __purge_vmap_area_lazy+0xc1/0x180 [ 1.231169] [<c013857c>] ? __change_page_attr_set_clr+0x4c/0xb0 [ 1.231176] [<c0138838>] ? change_page_attr_set_clr+0x128/0x300 [ 1.231183] [<c010798e>] ? __raw_callee_save_xen_restore_fl+0x6/0x8 [ 1.231192] [<c0159ca1>] ? vprintk+0x171/0x3f0 [ 1.231198] [<c0138bdf>] ? set_memory_nx+0x5f/0x70 Does Xen have different size page table allocations or something weird? -Kees [1] http://launchpadlibrarian.net/61853131/natty-failed-boot-ec2.txt [2] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/699828 -- Kees Cook Ubuntu Security Team -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
