panic: blockable sleep lock (sleep mutex) UMA pcpu

Hi all

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
....


(kgdb) bt full
#0  doadump () at /usr/src/sys/kern/kern_shutdown.c:236
No locals.
#1  0xc0641ea3 in boot (howto=256) at
/usr/src/sys/kern/kern_shutdown.c:370
No locals.
#2  0xc06422aa in __panic () at /usr/src/sys/kern/kern_shutdown.c:548
        td = (struct thread *) 0xc4599000
        bootopt = 256
        newpanic = 0
        ap = 0xd7f2ca78 "\020]\210ю╜s\210ю/r\210юq\005"
        buf = "blockable sleep lock (sleep mutex) UMA pcpu _at_
/usr/src/sys/vm/uma_core.c:1393", '\0' <repeats 178 times>
#3  0xc066cc2e in witness_checkorder (lock=0xc0968bc0, flags=9,
file=0xc088722f "/usr/src/sys/vm/uma_core.c", line=1393)
    at /usr/src/sys/kern/subr_witness.c:654
        lock_list = (struct lock_list_entry **) 0xc4599000
        lle = (struct lock_list_entry *) 0xc097bf20
        lock1 = (struct lock_instance *) 0xc07e2578
        lock2 = (struct lock_instance *) 0x0
        class = (struct lock_class *) 0xc08c7c3c
        w = (struct witness *) 0xc0937b68
        w1 = (struct witness *) 0xc097bf20
        td = (struct thread *) 0xc4599000
        i = -1063796948
        j = -1063772128
#4  0xc0637cdd in _mtx_lock_flags (m=0xc4599000, opts=0, file=--Can't
read userspace from dump, or kernel process--

) at /usr/src/sys/kern/kern_mutex.c:250
No locals.
#5  0xc07c95fa in uma_zalloc_arg (zone=0xc0968bc0, udata=0x0, flags=1)
at /usr/src/sys/vm/uma_core.c:1393
        item = (void *) 0x780
        cache = 0xc4599000
        bucket = 0x0
        cpu = 9
#6  0xc063632a in malloc (size=3238233408, type=0xc0a89460, flags=1) at
/usr/src/sys/vm/uma.h:234
        indx = 0
        va = 0xd7f2cb40 "\001"
        zone = 0xc1038540
        ksp = (struct malloc_type *) 0xc0a89460
#7  0xc0a7e0f1 in AcpiOsAllocate () from /boot/kernel/acpi.ko
No symbol table info available.
#8  0xc0a6c488 in AcpiUtCallocate () from /boot/kernel/acpi.ko
No symbol table info available.
#9  0xc0a640d8 in AcpiNsInternalizeName () from /boot/kernel/acpi.ko
No symbol table info available.
#10 0xc0a62a49 in AcpiNsEvaluateByName () from /boot/kernel/acpi.ko
No symbol table info available.
#11 0xc0a60be1 in AcpiGetSleepTypeData () from /boot/kernel/acpi.ko
No symbol table info available.
#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


-- 
Alex Lyashkov <shadow_at_psoft.net>
PSoft