kernel panic with 2.6.7-bb6

Hi,

I had a kernel panic while just hanging around in the shell (connected via ssh).

the host kernel is 2.6.7 , the client kernel is 2.6.7-bb6. (skas ; sysemu enabled ; no /dev/anon ; no COW; no hostfs (reiserfs); /dev/net/tun networking, some swap from a swap file in the udb root-filesystem, most on default in ".config", but absolute minimalistic, all uncesessary things removed (filesystems,sound, tt support, ...) )

Do you have an idea why gdb did not stop at the kernel panic (I did "break panic"), but exited. So I am not able to provide a backtrace.

/sebastian

----------------------------

Kernel panic: Kernel mode fault at addr 0x40007, ip 0x0

In interrupt handler - not syncing

EIP: 0000:[<00000000>] CPU: 0 Not tainted EFLAGS: 00000000
Not tainted
EAX: 00000000 EBX: 00000000 ECX: 00000000 EDX: 00000000
ESI: 00000000 EDI: 00000000 EBP: 00000000 DS: 0000 ES: 0000

Call Trace:  [<a0034c5d>] notifier_call_chain+0x2d/0x50
[<a0028c4b>] panic+0xab/0x130
[<a0022cb1>] arch_fixup+0x11/0x30
[<a0016591>] segv+0x201/0x230
[<a00193e1>] sig_handler_common_skas+0x81/0xa0

   [<a00168b8>] sig_handler+0x18/0x20
[<a00147d3>] change_signals+0x73/0xa0
[<a0016887>] segv_handler+0xd7/0xe0
[<a0014832>] unblock_signals+0x12/0x20
[<a00193e1>] sig_handler_common_skas+0x81/0xa0
[<a00168b8>] sig_handler+0x18/0x20

   [<a00461e1>] free_block+0x31/0xd0
[<a000f50e>] handle_IRQ_event+0x4e/0x70
[<a000f6c4>] do_IRQ+0x94/0xd0
[<a000fe0d>] sigio_handler+0x3d/0x130
[<a00193e1>] sig_handler_common_skas+0x81/0xa0
[<a00168b8>] sig_handler+0x18/0x20

   [<a00149ec>] set_signals+0xfc/0x1c0
[<a00149ec>] set_signals+0xfc/0x1c0
[<a00148c4>] get_signals+0x84/0xb0
[<a00149ec>] set_signals+0xfc/0x1c0
[<a00149ec>] set_signals+0xfc/0x1c0
[<a00147d3>] change_signals+0x73/0xa0

   [<a00148c4>] get_signals+0x84/0xb0
[<a00147d3>] change_signals+0x73/0xa0
[<a0011761>] __virt_to_page+0x11/0x30
[<a0046a07>] drain_array+0x67/0xa0
[<a0046b67>] reap_timer_fnc+0x67/0x1c0
[<a0046b00>] reap_timer_fnc+0x0/0x1c0

   [<a0030dc4>] run_timer_softirq+0xc4/0x190
[<a002c975>] __do_softirq+0xa5/0xb0
[<a002c9c5>] do_softirq+0x45/0x50
[<a000f6fb>] do_IRQ+0xcb/0xd0
[<a0015cd0>] timer_irq+0x150/0x190
[<a0015f7b>] timer_handler+0x2b/0x30

   [<a00193e1>] sig_handler_common_skas+0x81/0xa0
[<a0018d10>] start_kernel_proc+0x0/0x30
[<a00189d0>] new_thread_handler+0x0/0x100
[<a00168e9>] alarm_handler+0x29/0x60
[<a00168b8>] sig_handler+0x18/0x20
[<a00189d0>] new_thread_handler+0x0/0x100

   [<a0018d10>] start_kernel_proc+0x0/0x30
[<a0012845>] default_idle+0x45/0x70
[<a00149ec>] set_signals+0xfc/0x1c0
[<a00149ec>] set_signals+0xfc/0x1c0
[<a00149ec>] set_signals+0xfc/0x1c0
[<a00183df>] switch_threads+0x5f/0x60

   [<a00148c4>] get_signals+0x84/0xb0
[<a00147d3>] change_signals+0x73/0xa0
[<a0014832>] unblock_signals+0x12/0x20
[<a0025c67>] finish_task_switch+0x27/0x70
[<a012a77f>] schedule+0x28f/0x400
[<a00189d0>] new_thread_handler+0x0/0x100

   [<a0015b24>] idle_sleep+0x24/0x30
[<a001285d>] default_idle+0x5d/0x70
[<a00189d0>] new_thread_handler+0x0/0x100
[<a000be91>] rest_init+0x21/0x30
[<a000bf10>] init+0x0/0x100
[<a0018d05>] init_idle_skas+0x25/0x30

   [<a0001549>] start_kernel+0x149/0x170
[<a00012b0>] unknown_bootoption+0x0/0x120
[<a0014812>] block_signals+0x12/0x20
[<a0018d39>] start_kernel_proc+0x29/0x30
[<a0018d10>] start_kernel_proc+0x0/0x30
[<a00122e9>] run_kernel_thread+0x49/0x50

   [<a0018d10>] start_kernel_proc+0x0/0x30
[<a00189d0>] new_thread_handler+0x0/0x100
[<a00122ce>] run_kernel_thread+0x2e/0x50
[<a0018d10>] start_kernel_proc+0x0/0x30
[<a00189d0>] new_thread_handler+0x0/0x100
[<a0018a7e>] new_thread_handler+0xae/0x100

   [<a0018d10>] start_kernel_proc+0x0/0x30
[<a00189d0>] new_thread_handler+0x0/0x100
[<a0018aed>] new_thread_proc+0x1d/0x30

---Type <return> to continue, or q <return> to quit---Detaching after fork from child process 1937.

Program exited with code 01.
(gdb)

-------------------------------------------------------
SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift.
http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285
_______________________________________________
User-mode-linux-devel mailing list [email protected]
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel

Alle 02:19, mercoledì 25 agosto 2004, Sebastian Böhm ha scritto:

Well, there are at least some known bugs in -bb6 which are fixed in the new 2.6 mainline patches. I fear that is not repeatable (but the 2.4 bug you reported some time ago was repeatable, and I feel like this is a similar one, so you could try).

Note that to compile them you need to disable module support. Anyway, what the kernel has output actually *is* a backtrace. And why didn't you press Enter at the end, as it asks in the message? Anyway, it looks like something known... it's not normal a so long backtrace. Again, try the later mainline patches.

Paolo Giarrusso, aka Blaisorblade
Linux registered user n. 292729


-------------------------------------------------------
This SF.Net email is sponsored by BEA Weblogic Workshop
FREE Java Enterprise J2EE developer tools!
Get your free copy of BEA WebLogic Workshop 8.1 today.
http://ads.osdn.com/?ad_idP47&alloc_id808&opÌk
_______________________________________________
User-mode-linux-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel

What was the panic message, at least?

Jeff

-------------------------------------------------------
This SF.Net email is sponsored by: YOU BE THE JUDGE. Be one of 170 Project Admins to receive an Apple iPod Mini FREE for your judgement on who ports your project to Linux PPC the best. Sponsored by IBM.
Deadline: Sept. 13. Go here: http://sf.net/ppc_contest.php
_______________________________________________
User-mode-linux-devel mailing list [email protected]
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel