* [uml-devel] kernel panic with 2.6.7-bb6
@ 2004-08-25 0:19 Sebastian Böhm
2004-08-29 21:24 ` Paolo Giarrusso
2004-09-10 3:55 ` Jeff Dike
0 siblings, 2 replies; 3+ messages in thread
From: Sebastian Böhm @ 2004-08-25 0:19 UTC (permalink / raw)
To: Paolo Giarrusso; +Cc: user-mode-linux-devel
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)
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^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [uml-devel] kernel panic with 2.6.7-bb6
2004-08-25 0:19 [uml-devel] kernel panic with 2.6.7-bb6 Sebastian Böhm
@ 2004-08-29 21:24 ` Paolo Giarrusso
2004-09-10 3:55 ` Jeff Dike
1 sibling, 0 replies; 3+ messages in thread
From: Paolo Giarrusso @ 2004-08-29 21:24 UTC (permalink / raw)
To: user-mode-linux-devel; +Cc: Sebastian Böhm
Alle 02:19, mercoledì 25 agosto 2004, Sebastian Böhm ha scritto:
> 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.
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.
> 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)
>
>
>
> -------------------------------------------------------
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--
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [uml-devel] kernel panic with 2.6.7-bb6
2004-08-25 0:19 [uml-devel] kernel panic with 2.6.7-bb6 Sebastian Böhm
2004-08-29 21:24 ` Paolo Giarrusso
@ 2004-09-10 3:55 ` Jeff Dike
1 sibling, 0 replies; 3+ messages in thread
From: Jeff Dike @ 2004-09-10 3:55 UTC (permalink / raw)
To: Sebastian Böhm; +Cc: Paolo Giarrusso, user-mode-linux-devel, jdike
seb@exse.net said:
> 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.
What was the panic message, at least?
Jeff
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^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2004-09-10 2:53 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2004-08-25 0:19 [uml-devel] kernel panic with 2.6.7-bb6 Sebastian Böhm
2004-08-29 21:24 ` Paolo Giarrusso
2004-09-10 3:55 ` Jeff Dike
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