Kernel bug "soft lockup" errors question

Chris Snook csnook at redhat.com
Tue Jan 29 01:34:19 UTC 2008


Mark C. Allman wrote:
>>From what I've seen googling around to several pages, this bug has been
> seen before but I didn't see anyone post a solution:
>  
> orion kernel: BUG: soft lockup - CPU#0 stuck for 279s! [swapper:0]
> orion kernel: 
> orion kernel: Pid: 0, comm:              swapper
> orion kernel: EIP: 0060:[<c05382e6>] CPU: 0
> orion kernel: EIP is at acpi_idle_enter_simple+0x17b/0x1f1
> orion kernel:  EFLAGS: 00000202    Not tainted  (2.6.23.9-85.fc8 #1)
> orion kernel: EAX: 00000000 EBX: 0018bf91 ECX: 00000000 EDX: 00000000
> orion kernel: ESI: 00000000 EDI: 00fffe6e EBP: 00e73edd DS: 007b ES:
> 007b FS: 00d8
> orion kernel: CR0: 8005003b CR2: 090eae64 CR3: 12700000 CR4: 000006d0
> orion kernel: DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
> orion kernel: DR6: ffff0ff0 DR7: 00000400
> orion kernel:  [<c05a2399>] cpuidle_idle_call+0x5c/0x7f
> orion kernel:  [<c05a233d>] cpuidle_idle_call+0x0/0x7f
> orion kernel:  [<c040340b>] cpu_idle+0xab/0xcc
> orion kernel:  [<c073fa6c>] start_kernel+0x32c/0x334
> orion kernel:  [<c073f177>] unknown_bootoption+0x0/0x195
> orion kernel:  =======================
> 
> Is there a solution, or is this still a kernel bug???

This can happen for countless different reasons.  This one appears to be 
acpi-related, which generally means that the kernel is having difficulty with 
how the BIOS is describing the hardware.  A BIOS update might help, but if not, 
we need to know a lot more about the hardware.  Booting with acpi=off might also 
fix it, but with a modern system that cripples an awful lot of functionality.

	-- Chris




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