Red Hat Bugzilla – Bug 446300
Call trace generated by kernel (__update_rq_clock+26/208)
Last modified: 2009-07-14 11:46:12 EDT
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Description of problem:
On booting, I get the following error output from my kernel in /var/log/dmesg:
irq 18: nobody cared (try booting with the "irqpoll" option)
Pid: 0, comm: swapper Not tainted 2.6.25-14.fc9.x86_64 #1
<IRQ> [<ffffffff81027925>] ? __update_rq_clock+0x1a/0xd0
[<ffffffff8100a053>] ? mwait_idle+0x0/0x45
[<ffffffff8100afea>] ? default_idle+0x0/0x5f
<EOI> [<ffffffff8100a093>] ? mwait_idle+0x40/0x45
[<ffffffff8100af28>] ? enter_idle+0x22/0x24
[<ffffffff8100afa2>] ? cpu_idle+0x78/0xc0
[<ffffffff8128d2de>] ? start_secondary+0x3fc/0x40b
Disabling IRQ #18
After rebooting, /proc/interrupts contains:
18: 28 1 IO-APIC-fasteoi uhci_hcd:usb8, firewire_ohci
This is on a x86_64 2-CPU machine.
# cat /etc/sysconfig/hw-uuid
Version-Release number of selected component (if applicable):
Steps to Reproduce:
2. Check for the message in dmesg output.
I got the Call Trace error listed above.
No Call Trace error (presumably).
Sometimes devices send spurious interrupts, or devices that have no linux driver
will keep sending interrupts. You can work around the problem with the
"noirqdebug" boot option in grub.conf.
Thank you for your response. I'm interpreting your comments as saying that this is not a bug and that these call traces and warning messages from the Linux kernel should be ignored.
In that case I would characterize this as a (low-severity) usability bug: the warning message doesn't clearly indicate that the warning should be ignored (it should, if that is accurate, or it should provide enough information to determine whether to ignore it or not).
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