Re: panic: blockable sleep lock (sleep mutex) UMA pcpu

On Sun, 25 Apr 2004, Alex Lyashkov wrote:
> I have kernel and world cvsuped at today night, after i reboot my
> testbox i see message.
> ...
> panic: blockable sleep lock (sleep mutex) UMA pcpu _at_
> /usr/src/sys/vm/uma_core.c:1393
> at line 655 in file /usr/src/sys/kern/subr_witness.c
> ....
>
> #12 0xc0a615cb in AcpiEnterSleepStatePrep () from /boot/kernel/acpi.ko
> No symbol table info available.
> #13 0xc0a7101c in acpi_shutdown_poweroff () from /boot/kernel/acpi.ko
> No symbol table info available.
> #14 0xc0669757 in smp_rendezvous_action () at
> /usr/src/sys/kern/subr_smp.c:340
> No locals.
> #15 0xc066985b in smp_rendezvous (setup_func=0, action_func=0x8,
> teardown_func=0, arg=0x10)
>     at /usr/src/sys/kern/subr_smp.c:382
> No locals.
> #16 0xc0a70fdc in acpi_shutdown_final () from /boot/kernel/acpi.ko
> No symbol table info available.
> #17 0xc0641f46 in boot (howto=16392) at
> /usr/src/sys/kern/kern_shutdown.c:373
>         _ep = (struct eventhandler_entry *) 0x0
>         _el = (struct eventhandler_list *) 0x8
> #18 0xc06415f6 in reboot (td=0x0, uap=0x0) at
> /usr/src/sys/kern/kern_shutdown.c:174
>         error = 0

Thanks for the nice bug report.  I've had a patch for this for a while but
I hadn't committed it because power off still didn't work for the guy who
was testing it.  (The patch didn't cause his problems but didn't fix them
either.)  In any case, I've committed it since it's the right thing to do
in this codepath.  Let me know if after cvsup if you still have problems.

-Nate