Re: Soft lockup (and reboot): IPMI

From: Philipp Matthias Hahn
Date: Tue Aug 15 2006 - 02:48:30 EST

Matt Domsch wrote:

> On Mon, Aug 14, 2006 at 06:14:46PM +0200, Philipp Matthias Hahn wrote:
>>While playing with "openipmigui", the server just rebooted with the
>>following last message:
>>BUG: soft lockup detected on CPU#0!
>><c0103416> show_trace+0xd/0xf
>><c01034e5> dump_stack+0x15/0x17
>><c01382b0> softlockup_tick+0x9d/0xae
>><c012190a> run_local_timers+0x12/0x14
>><c0121748> update_process_times+0x3c/0x61
>><c010e1d9> smp_apic_timer_interrupt+0x57/0x5f
>><c010307c> apic_timer_interrupt+0x1c/0x24
>><f8aa8783> ipmi_thread+0x43/0x71 [ipmi_si]
>><c0129e62> kthread+0x78/0xa0
>><c0100e31> kernel_thread_helper+0x5/0xb
>>Any idea on what went wrong?
> What kernel please? If 2.6.17 or higher, this is new. If < 2.6.17,
> this is most likely due to the udelay(1) call in ipmi_thread() which
> in 2.6.17 was replaced with a schedule().

Sorry for omitting that information, it's a plain kernel.
model name : Intel(R) Xeon(TM) CPU 2.66GHz

ipmi message handler version 39.0
IPMI Watchdog: driver initialized
ipmi device interface
IPMI System Interface driver.
ipmi_si: Trying SMBIOS-specified KCS state machine at I/O address 0xca2,
slave address 0x24, irq 0
ipmi: Found new BMC (man_id: 0x002880, prod_id: 0x0000, dev_id: 0x00)
IPMI KCS interface initialized

Dipl.-Inform. Philipp.Hahn@xxxxxxxxxxxxxxxxxxxxxxxxxxx
Abteilung Systemsoftware und verteilte Systeme, Fk. II
Carl von Ossietzky Universitaet Oldenburg, 26111 Oldenburg, Germany
Telefon: +49 441 798-2866 Telefax: +49 441 798-2756
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at