[Bug 568441] Re: mtrr: your BIOS has set up an incorrect mask, fixing it up.

[Stéphane Loeuillet]

Also confirmed with latest 10.04 on HP ProLiant 460c G1 blade servers
with latest firmware/BIOS :

Reproductible at every boot

[    5.601231] ------------[ cut here ]------------
[    5.601239] WARNING: at /build/buildd/linux-2.6.32/arch/x86/kernel/cpu/mtrr/generic.c:467 generic_get_mtrr+0x11e/0x140()
[    5.601242] Hardware name: ProLiant BL460c G1
[    5.601243] mtrr: your BIOS has set up an incorrect mask, fixing it up.
[    5.601245] Modules linked in: usbhid(+) i7300_idle(-) fbcon tileblit font bitblit softcursor vga16fb vgastate hid ipmi_si(+) radeon ttm ipmi_msghandler drm_kms_helper psmouse hpilo floppy(+) serio_raw drm i2c_algo_bit bnx2 i5000_edac edac_core i5k_amb shpchp lp parport cciss
[    5.601266] Pid: 358, comm: plymouthd Not tainted 2.6.32-22-server #33-Ubuntu
[    5.601268] Call Trace:
[    5.601274]  [<ffffffff81066d1b>] warn_slowpath_common+0x7b/0xc0
[    5.601277]  [<ffffffff81066dc1>] warn_slowpath_fmt+0x41/0x50
[    5.601280]  [<ffffffff81028d0e>] generic_get_mtrr+0x11e/0x140
[    5.601283]  [<ffffffff8102788b>] mtrr_add_page+0xdb/0x3f0
[    5.601298]  [<ffffffffa0097862>] ? drm_ht_just_insert_please+0xa2/0xf0 [drm]
[    5.601301]  [<ffffffff81027bf6>] mtrr_add+0x56/0x70
[    5.601308]  [<ffffffffa008d1e9>] drm_addmap_core+0x659/0x800 [drm]
[    5.601314]  [<ffffffffa008d42a>] drm_addmap+0x1a/0x30 [drm]
[    5.601328]  [<ffffffffa0137abd>] radeon_driver_firstopen+0x5d/0x70 [radeon]
[    5.601334]  [<ffffffffa008fa43>] drm_setup+0x23/0x1a0 [drm]
[    5.601341]  [<ffffffffa0090052>] drm_open+0x102/0x120 [drm]
[    5.601348]  [<ffffffffa00901a3>] drm_stub_open+0x133/0x260 [drm]
[    5.601353]  [<ffffffff8114702a>] chrdev_open+0x13a/0x240
[    5.601356]  [<ffffffff81146ef0>] ? chrdev_open+0x0/0x240
[    5.601359]  [<ffffffff81141393>] __dentry_open+0x113/0x370
[    5.601363]  [<ffffffff8125192f>] ? security_inode_permission+0x1f/0x30
[    5.601366]  [<ffffffff8114d6ff>] ? inode_permission+0xaf/0xd0
[    5.601368]  [<ffffffff81141707>] nameidata_to_filp+0x57/0x70
[    5.601371]  [<ffffffff8115193a>] do_filp_open+0x2da/0xba0
[    5.601375]  [<ffffffff8115d2da>] ? alloc_fd+0x10a/0x150
[    5.601378]  [<ffffffff81141109>] do_sys_open+0x69/0x170
[    5.601380]  [<ffffffff81141250>] sys_open+0x20/0x30
[    5.601384]  [<ffffffff810131b2>] system_call_fastpath+0x16/0x1b
[    5.601386] ---[ end trace b7aa7c061981b639 ]---

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mtrr: your BIOS has set up an incorrect mask, fixing it up. 
https://bugs.launchpad.net/bugs/568441
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