[Skiboot] softlockup with irq/opal-elog

[Stewart Smith]

"Aneesh Kumar K.V" <aneesh.kumar at linux.vnet.ibm.com> writes:
> Hi,
>
> I am hitting this on a power7 big endian config. Once I clear the error,
> the host boots ok.
>
> NMI watchdog: BUG: soft lockup - CPU#27 stuck for 23s! [irq/34-opal-elo:509]
> Modules linked in:
> irq event stamp: 7326292
> hardirqs last  enabled at (7326291): [<c000000000dff258>] ._raw_spin_unlock_irq+0x38/0x70
> hardirqs last disabled at (7326292): [<c000000000002748>] decrementer_common+0x148/0x180
> softirqs last  enabled at (7323620): [<c0000000000ed170>] .__do_softirq+0x5b0/0x760
> softirqs last disabled at (7323615): [<c0000000000ed5c8>] .irq_exit+0xd8/0x120
> CPU: 27 PID: 509 Comm: irq/34-opal-elo Tainted: G        W       4.7.0-rc1-11926-g468e20a #1
> task: c000000ff0a08880 ti: c000000ff0a8c000 task.ti: c000000ff0a8c000
> NIP: c000000000010734 LR: c000000000010734 CTR: 00000000300551d0
> REGS: c000000ff0a8f760 TRAP: 0901   Tainted: G        W        (4.7.0-rc1-11926-g468e20a)
> MSR: 9000000000009032 <SF,HV,EE,ME,IR,DR,RI>  CR: 22000444  XER: 00000000
> CFAR: c00000000021dfc0 SOFTE: 1 
> GPR00: c000000000dff264 c000000ff0a8f9e0 c0000000015b7300 0000000000000900 
> GPR04: 0000000000000001 0000000000000001 9000000000009032 000000000000001b 
> GPR08: 0000000000000000 c000000ff0a8c000 0000000000000000 0000000000000000 
> GPR12: 0000000048000442 c00000000fb8f300 
> NIP [c000000000010734] .arch_local_irq_restore.part.4+0x84/0xb0
> LR [c000000000010734] .arch_local_irq_restore.part.4+0x84/0xb0
> Call Trace:
> [c000000ff0a8fa50] [c000000000dff264] ._raw_spin_unlock_irq+0x44/0x70
> [c000000ff0a8fad0] [c00000000016e584] .irq_finalize_oneshot.part.2+0x84/0x1c0
> [c000000ff0a8fb60] [c00000000016e7f4] .irq_thread_fn+0x74/0xa0
> [c000000ff0a8fbf0] [c00000000016ec60] .irq_thread+0x1e0/0x280
> [c000000ff0a8fcd0] [c000000000116ad4] .kthread+0x114/0x140
> [c000000ff0a8fe30] [c0000000000095f0] .ret_from_kernel_thread+0x58/0x68
> Instruction dump:
> 409e002c e92d0020 61298000 7d210164 38210070 e8010010 7c0803a6 4e800020 
> 60000000 60000000 60000000 4bff1a4d <60000000> 38210070 e8010010 7c0803a6 

Alistair/Vasant: something you've seen?

-- 
Stewart Smith
OPAL Architect, IBM.