#0 sched_switch (td=0xc579b230, newtd=Variable "newtd" is not available.

[John Baldwin]

On Saturday 02 May 2009 2:11:59 pm dikshie wrote:
> is this known bug?
> 
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; apic id = 00
> fault virtual address   = 0x8c000180
> fault code              = supervisor read, page not present
> instruction pointer     = 0x20:0xc063d904
> stack pointer           = 0x28:0xe7704608
> frame pointer           = 0x28:0xe7704620
> code segment            = base 0x0, limit 0xfffff, type 0x1b
>                         = DPL 0, pres 1, def32 1, gran 1
> processor eflags        = interrupt enabled, resume, IOPL = 0
> current process         = 2013 (firefox-bin)
> trap number             = 12
> panic: page fault
> cpuid = 0
> Uptime: 5h1m34s
> Physical memory: 2038 MB
> Dumping 194 MB: 179 163 147 131 115 99 83 (CTRL-C to abort)  67
> (CTRL-C to abort)  (CTRL-C to abort)  (CTRL-C to abort)  51 (CTRL-C to
> abort)  35 19 3
> 
> kgdb: kvm_read: invalid address (0x4c414e52)
> kgdb: kvm_read: invalid address (0x35b2e804)
> kgdb: kvm_read: invalid address (0x5502)
> kgdb: kvm_read: invalid address (0x6a02)
> Reading symbols from /boot/kernel/geom_journal.ko...Reading symbols
> from /boot/kernel/geom_journal.ko.symbols...done.
> done.
> Loaded symbols for /boot/kernel/geom_journal.ko
> Reading symbols from /boot/kernel/acpi_ibm.ko...Reading symbols from
> /boot/kernel/acpi_ibm.ko.symbols...done.
> done.
> Loaded symbols for /boot/kernel/acpi_ibm.ko
> Reading symbols from /boot/kernel/acpi.ko...Reading symbols from
> /boot/kernel/acpi.ko.symbols...done.
> done.
> Loaded symbols for /boot/kernel/acpi.ko
> Reading symbols from /boot/kernel/linprocfs.ko...Reading symbols from
> /boot/kernel/linprocfs.ko.symbols...done.
> done.
> Loaded symbols for /boot/kernel/linprocfs.ko
> Reading symbols from /boot/kernel/linux.ko...Reading symbols from
> /boot/kernel/linux.ko.symbols...done.
> done.
> Loaded symbols for /boot/kernel/linux.ko
> #0  sched_switch (td=0xc579b230, newtd=Variable "newtd" is not available.
> ) at /usr/src/sys/kern/sched_ule.c:1944
> 1944                    cpuid = PCPU_GET(cpuid);
> (kgdb)

Please get a backtrace using 'bt'.

Also, 'l *0xc063d904' may also be useful.

-- 
John Baldwin