On Wed, Sep 04, 2013 at 09:57:45PM -0700, Greg KH wrote:
> On Thu, Sep 05, 2013 at 12:13:38AM -0400, Dave Jones wrote:
> > On Wed, Sep 04, 2013 at 02:53:11PM +0930, Rusty Russell wrote:
> >
> > > >> With this enabled, I get a bunch of scrolling oopses immediately
> > after
> > > >> exiting the bootloader. It happens so early I can't even capture them
> > > >> over usb-serial, or earlyprintk=dbgp.
> > > >>
> > > >> And for whatever reason, the printk path while oopsing ignores
> > boot_delay parameter,
> > > >> so I can't even use that.
> > > >>
> > > >> any ideas ?
> > > >
> > > > The first big bug found with this was with the module kobject code,
> > and
> > > > a fix for that should be going in through Rusty's tree to Linus for
> > this
> > > > merge window (right Rusty?)
> > >
> > > Yep, just sent pull request. The fix was the final commit there...
> >
> > Crap, that isn't the bug I'm hitting.
>
> Any chance to get a oops traceback?
Got it. (I think I was getting tracebacks from multiple cpus, hence the
spewing).
Adding a check for tainted() = infinite loop to show_backtrace() combined with
boot_delay
gave me a really long oops that I had to grab video to record.
RIP: <null>
Trace:
<IRQ>
run_timer_softirq
__do_softirq
irq_exit
smp_apic_timer_interrupt
apic_timer_interrupt
<EOI>
vprintk_emit
dev_vprintk_emit
dev_vprint_emit
__dev_printk
_dev_info
ahci_print_info
ahci_init_one
local_pci_probe
pci_device_probe
driver_probe_device
__driver_attach
bus_for_each_dev
driver_attach
bus_add_driver
driver_register
__pci_register_driver
ahci_pci_driver_init
do_one_initcall
...
Dave
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