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On 2.6.28.2 starting on bootup, I am getting spammed to death with the
following BUG, and then after a little while the system freezes solid:

Jan 27 14:50:01 fearless kernel: [   41.046319] BUG: scheduling while atomic: swapper/0/0x10000103
Jan 27 14:50:01 fearless kernel: [   41.046395] Modules linked in: nls_iso8859_1 nls_cp437 vfat fat ide_cd_mod cdrom ata_piix pata_acpi ata_generic ohci1394 ieee1394 piix ide_pci_generic tg3 sg libphy loop aes_x86_64 aes_generic sha256_generic dm_mirror dm_region_hash dm_log dm_snapshot fuse
Jan 27 14:50:01 fearless kernel: [   41.047645] CPU 1:
Jan 27 14:50:01 fearless kernel: [   41.047743] Modules linked in: nls_iso8859_1 nls_cp437 vfat fat ide_cd_mod cdrom ata_piix pata_acpi ata_generic ohci1394 ieee1394 piix ide_pci_generic tg3 sg libphy loop aes_x86_64 aes_generic sha256_generic dm_mirror dm_region_hash dm_log dm_snapshot fuse
Jan 27 14:50:01 fearless kernel: [   41.048982] Pid: 0, comm: swapper Not tainted 2.6.28.2-f1 #2
Jan 27 14:50:01 fearless kernel: [   41.049042] RIP: 0010:[<ffffffff804160df>]  [<ffffffff804160df>] acpi_idle_enter_simple+0x1e8/0x25c
Jan 27 14:50:01 fearless kernel: [   41.049164] RSP: 0018:ffff88013f1dfea8  EFLAGS: 00000283
Jan 27 14:50:01 fearless kernel: [   41.049225] RAX: ffff88013f1dffd8 RBX: ffff88013f1dfee8 RCX: 000000098e9bcd7c
Jan 27 14:50:01 fearless kernel: [   41.049295] RDX: 0000000000000000 RSI: 000000098e8c6876 RDI: 000000098e8c8bd4
Jan 27 14:50:01 fearless kernel: [   41.049357] RBP: ffff88013f1dfee8 R08: 0000000000000000 R09: 00000000fffc0c76
Jan 27 14:50:01 fearless kernel: [   41.049419] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8025fc61
Jan 27 14:50:01 fearless kernel: [   41.049482] R13: ffff88013f1dfe28 R14: 0000000000000000 R15: 00000000ffffffff
Jan 27 14:50:01 fearless kernel: [   41.049544] FS:  0000000000000000(0000) GS:ffff88013fc03d80(0000) knlGS:0000000000000000
Jan 27 14:50:01 fearless kernel: [   41.049618] CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
Jan 27 14:50:01 fearless kernel: [   41.049678] CR2: 00007f1e26836ae0 CR3: 0000000000201000 CR4: 00000000000006e0
Jan 27 14:50:01 fearless kernel: [   41.049740] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Jan 27 14:50:01 fearless kernel: [   41.049803] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Jan 27 14:50:01 fearless kernel: [   41.049865] Call Trace:
Jan 27 14:50:01 fearless kernel: [   41.049923]  [<ffffffff804160d5>] ? acpi_idle_enter_simple+0x1de/0x25c
Jan 27 14:50:01 fearless kernel: [   41.049988]  [<ffffffff8050abbd>] cpuidle_idle_call+0xad/0x110
Jan 27 14:50:01 fearless kernel: [   41.050051]  [<ffffffff8020ab03>] cpu_idle+0x63/0xd0
Jan 27 14:50:01 fearless kernel: [   41.050113]  [<ffffffff8060c67a>] start_secondary+0x18d/0x2b3

If I boot with idle=mwait in the command line, it instead gives:

Jan 27 14:50:01 fearless kernel: [   41.046319] BUG: scheduling while atomic: swapper/0/0x10000103
Jan 27 14:50:01 fearless kernel: [   41.046395] Modules linked in: nls_iso8859_1 nls_cp437 vfat fat ide_cd_mod cdrom ata_piix pata_acpi ata_generic ohci1394 ieee1394 piix ide_pci_generic tg3 sg libphy loop aes_x86_64 aes_generic sha256_generic dm_mirror dm_region_hash dm_log dm_snapshot fuse
Jan 27 14:50:01 fearless kernel: [   41.047645] CPU 1:
Jan 27 14:50:01 fearless kernel: [   41.047743] Modules linked in: nls_iso8859_1 nls_cp437 vfat fat ide_cd_mod cdrom ata_piix pata_acpi ata_generic ohci1394 ieee1394 piix ide_pci_generic tg3 sg libphy loop aes_x86_64 aes_generic sha256_generic dm_mirror dm_region_hash dm_log dm_snapshot fuse
Jan 27 14:50:01 fearless kernel: [   41.048982] Pid: 0, comm: swapper Not tainted 2.6.28.2-f1 #2
Jan 27 14:50:01 fearless kernel: [   41.049042] RIP: 0010:[<ffffffff804160df>]  [<ffffffff804160df>] acpi_idle_enter_simple+0x1e8/0x25c
Jan 27 14:50:01 fearless kernel: [   41.049164] RSP: 0018:ffff88013f1dfea8  EFLAGS: 00000283
Jan 27 14:50:01 fearless kernel: [   41.049225] RAX: ffff88013f1dffd8 RBX: ffff88013f1dfee8 RCX: 000000098e9bcd7c
Jan 27 14:50:01 fearless kernel: [   41.049295] RDX: 0000000000000000 RSI: 000000098e8c6876 RDI: 000000098e8c8bd4
Jan 27 14:50:01 fearless kernel: [   41.049357] RBP: ffff88013f1dfee8 R08: 0000000000000000 R09: 00000000fffc0c76
Jan 27 14:50:01 fearless kernel: [   41.049419] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8025fc61
Jan 27 14:50:01 fearless kernel: [   41.049482] R13: ffff88013f1dfe28 R14: 0000000000000000 R15: 00000000ffffffff
Jan 27 14:50:01 fearless kernel: [   41.049544] FS:  0000000000000000(0000) GS:ffff88013fc03d80(0000) knlGS:0000000000000000
Jan 27 14:50:01 fearless kernel: [   41.049618] CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
Jan 27 14:50:01 fearless kernel: [   41.049678] CR2: 00007f1e26836ae0 CR3: 0000000000201000 CR4: 00000000000006e0
Jan 27 14:50:01 fearless kernel: [   41.049740] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Jan 27 14:50:01 fearless kernel: [   41.049803] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Jan 27 14:50:01 fearless kernel: [   41.049865] Call Trace:
Jan 27 14:50:01 fearless kernel: [   41.049923]  [<ffffffff804160d5>] ? acpi_idle_enter_simple+0x1de/0x25c
Jan 27 14:50:01 fearless kernel: [   41.049988]  [<ffffffff8050abbd>] cpuidle_idle_call+0xad/0x110
Jan 27 14:50:01 fearless kernel: [   41.050051]  [<ffffffff8020ab03>] cpu_idle+0x63/0xd0
Jan 27 14:50:01 fearless kernel: [   41.050113]  [<ffffffff8060c67a>] start_secondary+0x18d/0x2b3

After a little while, anywhere from a minute to half an hour, the system
just locks solidly, since I am in X I do not know if there are any
messages printed, however the LEDs are not blinking, all LEDs are
unresponsive, and sysrq from a PS/2 keyboard does not work.

Attached is the .config, and the dmesg output from a boot with this
kernel.

Thank you,
Zephaniah E. Hull.