[okl4-developer] second wombat
Ashish Bijlani
ashish.bijlani at gmail.com
Tue Oct 7 14:51:53 EST 2008
Thanks for the help Geoff. However, I tried disabling the serial
console in the first wombat. Even then the serial console stuff
doesn't work. It shows the same behavior - hangs and doesn' gimme
bash/sh shell.
-ashish
On Mon, Oct 6, 2008 at 11:37 PM, Geoffrey Lee <glee at ok-labs.com> wrote:
> On Mon, Oct 06, 2008 at 07:15:53PM -0400, Ashish Bijlani wrote:
>> I think there is conflict between the init processes from the two wombats:
>>
>> vserial: init done (handle: 0, owner: 18001, mask: 2
>> vserial: init done (handle: 1, owner: 1c001, mask: 2)
>> start_thread current = 81f2dd60 pc = 800bd0, sp = 1ac5f30 name: L_1
>> start_thread current = 8272dd60 pc = 800bd0, sp = 1e96f30 name: L2_1
>
> Ashish - if you are referring to the /sbin/init processes in
> OK Linux they wouldn't be conflicting directly - each would run
> in its own separate VM. From the symptoms however it seems
> that the serial sharing is getting confused, I would debug
> the vserial <-> OK Linux interactions between the two
> OK Linux VMs.
>
> -gl
>
>>
>> Does anybody have any idea?
>>
>> -Ashish
>>
>> On Mon, Oct 6, 2008 at 2:54 AM, Ashish Bijlani <ashish.bijlani at gmail.com> wrote:
>> > I get Error Code = 2 for L_syscall and L2_syscall
>> >
>> >
>> >
>> >> showtcbext
>> > tcb/tid/name [current]: L1
>> > No thread named: L1
>> >> showtcbext
>> > tcb/tid/name [current]: L_syscall
>> > === L_syscall == TCB: f00309a0 == ID: 00020001 = e0501e00/e0501e00 ==
>> > APRIO/EPRIO: 0x63/0x63 ===
>> > UIP: 810b9a2c queues: rB space: f01049f8/5 pager: roottask
>> > USP: 811cc5cc tstate: WAIT_FOREVER ready: NIL_THRD:NIL_THRD pdir : f0105900
>> > sndhd : NIL_THRD blocked : L_syscal:L_syscal waiting_for : L_timer
>> > ts length : 0x2710 us, curr ts: 0x2710 us
>> > resources: 00000000 [ek], ARM [PID: 0, vspace: 1, domain: 10,
>> > dom_mask 55510001]
>> > continuation: f0002428 preemption_cont: 00000000
>> > scheduler: L_syscal exception_handler: roottask
>> > partner: L_timer saved partner: NIL_THRD saved state: ABORTED
>> > tcb_idx: 7
>> > references: T f010184c->f0031380(I)->f0031420(I)->f0031358(I)->f00310c0(I)->f0031160(I)->f0031098(I)->f0030f60(I)->f0031000(I)->f0030f38(I)->f0030ca0(I)->f0030d40(I)->f0030c78(I)->f010844c(I)->f0030a80(I)
>> >
>> > user handle: 00000000 cop flags: 00
>> > preempt flags: 00 [~]
>> > incoming notify bits: 00000000 notify mask: 00000000
>> > last preempted_ip: 810040c4 preempt_callback_ip: 810041f8
>> >
>> > mr( 0): 00000000 811cc648 811cc604 811cc608 811c4640 811cc648 01e97d44 000000c0
>> > mr( 8): 00002654 00988e78 01e97d44 0002cef4 ef900066 40000010 00000000 00000000
>> > mr(16): 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
>> > mr(24): 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
>> > Message Tag: 0 untyped, label = 0, flags = -
>> >
>> > Acceptor: 00000000 (a) Error code: 2
>> >
>> >
>> >
>> >
>> >
>> >
>> >> showtcbext
>> > tcb/tid/name [current]: L2_syscall
>> > === L2_syscall == TCB: f0030b00 == ID: 00024001 = e0601e00/e0601e00 ==
>> > APRIO/EPRIO: 0x63/0x63 ===
>> > UIP: 81eb99c8 queues: rb space: f0104910/6 pager: roottask
>> > USP: 8282ff60 tstate: WAIT_FOREVER ready: NIL_THRD:NIL_THRD pdir : f0105800
>> > sndhd : NIL_THRD blocked : NIL_THRD:NIL_THRD waiting_for : NIL_THRD
>> > ts length : 0x2710 us, curr ts: 0x2710 us
>> > resources: 00000000 [ek], ARM [PID: 0, vspace: 1, domain: 5, dom_mask 401]
>> > continuation: f0002428 preemption_cont: 00000000
>> > scheduler: L2_sysca exception_handler: roottask
>> > partner: ANY_THRD saved partner: NIL_THRD saved state: ABORTED
>> > tcb_idx: 8
>> > references: T f0101854->f0030e00(I)->f0030ea0(I)->f0030dd8(I)->f0030be0(I)
>> >
>> > user handle: 00000000 cop flags: 00
>> > preempt flags: 00 [~]
>> > incoming notify bits: 00000000 notify mask: 00000000
>> > last preempted_ip: 81e07844 preempt_callback_ip: 81e042ec
>> >
>> > mr( 0): 00000000 00000001 8282c000 00000000 8282c05c 81fbb4ec 8002c380 00000000
>> > mr( 8): 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
>> > mr(16): 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
>> > mr(24): 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
>> > Message Tag: 0 untyped, label = 0, flags = -
>> >
>> > Acceptor: 00000000 (a) Error code: 2
>> >
>> >
>> > Upon debugging more I found out the Error Code 2 comes because of this :
>> >
>> > "
>> > Mount-cache hash table entries: 512
>> > current = L2_syscall
>> > SYS_EXCHANGE_REGISTERS: dest=NIL_THRD, control=0x80 [~~~~~~~~~~],
>> > usp=00000000, uip=00000000, uflags=00000000, uhandle=0
>> >
>> > current = L2_syscall
>> > SYS_EXCHANGE_REGISTERS: dest=NIL_THRD, control=0x80 [~~~~~~~~~~],
>> > usp=00000000, uip=00000000, uflags=00000000, uhandle=0
>> >
>> > current = L2_syscall
>> > SYS_EXCHANGE_REGISTERS: dest=NIL_THRD, control=0x80 [~~~~~~~~~~],
>> > usp=00000000, uip=00000000, uflags=00000000, uhandle=0
>> >
>> > Mount-cache hash table entries: 512
>> > current = L_syscall
>> > SYS_EXCHANGE_REGISTERS: dest=NIL_THRD, control=0x80 [~~~~~~~~~~],
>> > usp=00000000, uip=00000000, uflags=00000000, uhandle=0
>> >
>> > current = L_syscall
>> > SYS_EXCHANGE_REGISTERS: dest=NIL_THRD, control=0x80 [~~~~~~~~~~],
>> > usp=00000000, uip=00000000, uflags=00000000, uhandle=0
>> >
>> > current = L_syscall
>> > SYS_EXCHANGE_REGISTERS: dest=NIL_THRD, control=0x80 [~~~~~~~~~~],
>> > usp=00000000, uip=00000000, uflags=00000000, uhandle=0
>> >
>> > current = L_syscall
>> > SYS_EXCHANGE_REGISTERS: dest=NIL_THRD, control=0x80 [~~~~~~~~~~],
>> > usp=00000000, uip=00000000, uflags=00000000, uhandle=0
>> >
>> > current = L_syscall
>> > SYS_EXCHANGE_REGISTERS: dest=NIL_THRD, control=0x80 [~~~~~~~~~~],
>> > usp=00000000, uip=00000000, uflags=00000000, uhandle=0
>> > "
>> >
>> > Is this normal? How do I fix this?
>> >
>> > Thanks,
>> > Ashish
>> >
>> >
>> > On Sun, Oct 5, 2008 at 8:54 PM, Ashish Bijlani <ashish.bijlani at gmail.com> wrote:
>> >>> showtcbext
>> >> tcb/tid/name [current]: L2_1
>> >> === L2_1 == TCB: f0030dc0 == ID: 0002c001 = e0801f00/e0801f00 ==
>> >> APRIO/EPRIO: 0x62/0x62 ===
>> >> UIP: 00800bd0 queues: Rb space: f0104740/8 pager: L2_syscall
>> >> USP: 01c26f30 tstate: RUNNING ready: L2_1 :L2_1 pdir : f0105600
>> >> sndhd : NIL_THRD blocked : NIL_THRD:NIL_THRD waiting_for : NIL_THRD
>> >> ts length : 0x2710 us, curr ts: 0x2710 us
>> >> resources: 00000000 [ek], ARM [PID: 31, vspace: 0, domain: 7, dom_mask 4001]
>> >> continuation: ffff0cf4 preemption_cont: 00000000
>> >> scheduler: L2_sysca exception_handler: L2_sysca
>> >> partner: NIL_THRD saved partner: NIL_THRD saved state: ABORTED
>> >> tcb_idx: a
>> >> references: T f0101864
>> >>
>> >> user handle: 00000000 cop flags: 00
>> >> preempt flags: 00 [~]
>> >> incoming notify bits: 00000000 notify mask: 00000000
>> >> last preempted_ip: 00000000 preempt_callback_ip: 00000000
>> >>
>> >> mr( 0): 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
>> >> mr( 8): 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
>> >> mr(16): 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
>> >> mr(24): 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
>> >> Message Tag: 0 untyped, label = 0, flags = -
>> >>
>> >> Acceptor: 00000000 (a) Error code: 0
>> >>
>> >>
>> >> On Sun, Oct 5, 2008 at 8:51 PM, Ashish Bijlani <ashish.bijlani at gmail.com> wrote:
>> >>> Hi,
>> >>>
>> >>> I'm running two wombats on emulated (skyeye) gumstix platform.
>> >>> However, the wombat that boots up last doesn't prints any msgs on the
>> >>> serial console. AFAIK, once linux starts "init" process msgs over
>> >>> serial console appear through vserial server/client model and not
>> >>> through L4KDB. However, the latter wombat either doesn't get serial
>> >>> console to dump msgs or it is blocked on some event; I'm not sure
>> >>> though. I've modified vserial server in iguana to make the latter
>> >>> wombat's vserial client as the active_virtual client, but I don't see
>> >>> any output. What could be the reason?
>> >>>
>> >>> snippet from vserial to make the last wombat as active_virtual
>> >>>
>> >>> "
>> >>> for (i = 0; i < 4; i++)
>> >>> {
>> >>> if (virtual_device_instance[i].valid_instance)
>> >>> {
>> >>> virtual_device_instance[i].serial_device = (void *)(serial_device);
>> >>> // XXX virtual_device_instance[i].thread = *thread;
>> >>> // XXX virtual_device_instance[i].mask = mask;
>> >>>
>> >>> virtual_device_instance[i].si_start =
>> >>> virtual_device_instance[i].si_end = NULL;
>> >>> virtual_device_instance[i].si_comp_end =
>> >>> virtual_device_instance[i].si_comp_start = NULL;
>> >>>
>> >>> if (serial_device->active_virtual == NULL)
>> >>> {
>> >>> serial_device->active_virtual = &virtual_device_instance[i];
>> >>> serial_device->last_virtual = &virtual_device_instance[i];
>> >>> }
>> >>> else
>> >>> {
>> >>> serial_device->active_virtual = &virtual_device_instance[i];
>> >>> serial_device->last_virtual->next = &virtual_device_instance[i];
>> >>> serial_device->last_virtual = &virtual_device_instance[i];
>> >>> }
>> >>> }
>> >>> }
>> >>> "
>> >>>
>> >>> Output snippet
>> >>>
>> >>> "
>> >>> NET: Registered protocol family 15
>> >>> VFS: Mounted root (ext2 filesystem) readonly.
>> >>> PXA FFUART IRQ: 33
>> >>> vserial: init done (handle: 0, owner: 18001, mask: 2)
>> >>>
>> >>> Client: 0x0
>> >>> io scheduler noop registered
>> >>> io scheduler anticipatory registered
>> >>> io scheduler deadline registered
>> >>> io scheduler cfq registered (default)
>> >>> RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
>> >>> loop: module loaded
>> >>> tun: Universal TUN/TAP device driver, 1.6
>> >>> tun: (C) 1999-2004 Max Krasnyansky <maxk at qualcomm.com>
>> >>> igms0: unknown partition table
>> >>> Iguana ramdisk driver initialized
>> >>> kobject_add failed for ttyS0 with -EEXIST, don't try to register
>> >>> things with the same name in the same directory.
>> >>> This architecture does not implement dump_stack()
>> >>> Iguana virtual serial driver v1.0
>> >>> TCP cubic registered
>> >>> NET: Registered protocol family 1
>> >>> NET: Registered protocol family 17
>> >>> NET: Registered protocol family 15
>> >>> VFS: Mounted root (ext2 filesystem) readonly.
>> >>> vserial: init done (handle: 1, owner: 1c001, mask: 2)
>> >>>
>> >>> Client: 0x1c001
>> >>> start_thread current = 8282bd60 pc = 800bd0, sp = 1c26f30
>> >>>
>> >>> Client: 0x1c001
>> >>>
>> >>> Client: 0x1c001
>> >>>
>> >>> Client: 0x1c001
>> >>>
>> >>> Client: 0x1c001
>> >>>
>> >>> "
>> >>>
>> >>> It doesn't prints anything after this. For the first "vserial: init
>> >>> done (handle: 0, owner: 18001, mask: 2)" it shows Client as NULL.
>> >>> Second time it shows the correct client.
>> >>>
>> >>>
>> >>>> showqueue
>> >>> Key: (X) blocked, <X> on CPU, {X} halted, !X! aborted
>> >>>
>> >>> [255]:
>> >>> WAIT_FOREVER
>> >>> (roottask)
>> >>>
>> >>> [240]:
>> >>> WAIT_FOREVER
>> >>> (vtimer)
>> >>> WAIT_FOREVER
>> >>> (vrtc)
>> >>>
>> >>> [200]:
>> >>> WAIT_FOREVER
>> >>> (event)
>> >>>
>> >>> [110]:
>> >>> RUNNING
>> >>> <vserial>
>> >>>
>> >>> [100]:
>> >>> WAIT_FOREVER
>> >>> (L_timer)
>> >>> WAIT_FOREVER
>> >>> (L2_timer)
>> >>>
>> >>> [ 99]:
>> >>> WAIT_FOREVER
>> >>> (L_syscal)
>> >>> WAIT_FOREVER
>> >>> (L2_sysca)
>> >>>
>> >>> [ 98]:
>> >>> WAIT_FOREVER
>> >>> (L_1)
>> >>> RUNNING
>> >>> L2_1
>> >>> WAIT_FOREVER
>> >>> (L_49)
>> >>> idle : idle_thread
>> >>>
>> >>> L2_1 represents the init process in wombat 2. This always shows L2_1
>> >>> as RUNNING. But doesn't prints it within "<" and ">".
>> >>>
>> >>> Thanks,
>> >>> Ashish
>> >>>
>> >>
>> >
>>
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>
> --
>
>
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