[uml-user] Kernel-Ooops

[Daniel T. <dt...@ad...>]

Hi,

I'm getting this sometimes in my UML-instances. It doesn't crash them =20
but I'd like to solve it. If it happens it will appear in all =20
instances at the same time. Any idea what goes wrong here?

[44059948.650000] BUG: soft lockup detected on CPU#0!
[44059948.650000]
[44059948.650000] EIP: 0000:[<00000000>] CPU: 0 Not tainted EFLAGS: 00000000
[44059948.650000]     Not tainted
[44059948.650000] EAX: 00000000 EBX: 00000000 ECX: 00000000 EDX: 00000000
[44059948.650000] ESI: 00000000 EDI: 00000000 EBP: 00000000 DS: 0000 ES: 000=
0
[44059948.650000] 083cb830:  [<0805ce8c>] um_timer+0xd/0x93
[44059948.650000] 083cb848:  [<080911b0>] handle_IRQ_event+0x24/0x54
[44059948.650000] 083cb86c:  [<08091233>] __do_IRQ+0x53/0x90
[44059948.650000] 083cb880:  [<08059b9a>] do_IRQ+0x2f/0x3c
[44059948.650000] 083cb88c:  [<0805ce3f>] timer_irq+0x116/0x136
[44059948.650000] 083cb8a8:  [<0805d123>] timer_handler+0x0/0x61
[44059948.650000] 083cb8b0:  [<0805d17d>] timer_handler+0x5a/0x61
[44059948.650000] 083cb8c8:  [<0806d62f>] sig_handler_common_skas+0xa3/0xbc
[44059948.650000] 083cb8e8:  [<0806a1f2>] real_alarm_handler+0x33/0x4c
[44059948.650000] 083cb8fc:  [<0806a245>] alarm_handler+0x3a/0x46
[44059948.650000] 083cb90c:  [<0805eaf4>] start_kernel_proc+0x0/0x2a
[44059948.650000] 083cb910:  [<082dddd8>] __restore+0x0/0x8
[44059948.650000] 083cb92c:  [<0805eaf4>] start_kernel_proc+0x0/0x2a
[44059948.650000] 083cb950:  [<082e9e2a>] __libc_nanosleep+0x1a/0x58
[44059948.650000] 083cb978:  [<08073d44>] try_to_wake_up+0x61/0x9d
[44059948.650000] 083cb980:  [<08073d76>] try_to_wake_up+0x93/0x9d
[44059948.650000] 083cb9fc:  [<081f432c>] as_remove_queued_request+0xf4/0x10=
1
[44059948.650000] 083cba1c:  [<081f447c>] as_move_to_dispatch+0xdc/0x101
[44059948.650000] 083cba34:  [<08068c8e>] file_io+0x16/0x62
[44059948.650000] 083cba54:  [<08068d14>] os_write_file+0x1b/0x1f
[44059948.650000] 083cba64:  [<082ea730>] __libc_write+0x0/0x60
[44059948.650000] 083cba68:  [<0805b4ff>] copy_to_user_proc+0x0/0x5
[44059948.650000] 083cba70:  [<082ddbcc>] __libc_longjmp+0x3c/0x60
[44059948.650000] 083cba90:  [<0806d3b8>] switch_threads+0x3d/0x53
[44059948.650000] 083cbab4:  [<0806d3ab>] switch_threads+0x30/0x53
[44059948.650000] 083cbac8:  [<08065363>] ubd_handler+0x81/0x89
[44059948.650000] 083cbaf8:  [<0806ab1b>] switch_timers+0xd1/0xf2
[44059948.650000] 083cbb54:  [<0805e7be>] switch_to_skas+0x86/0x8b
[44059948.650000] 083cbb6c:  [<0805b0f3>] _switch_to+0x3a/0xc7
[44059948.650000] 083cbb9c:  [<08322560>] schedule+0x432/0x4b3
[44059948.650000] 083cbba8:  [<0832257d>] schedule+0x44f/0x4b3
[44059948.650000] 083cbbec:  [<0806ac12>] idle_sleep+0x1d/0x21
[44059948.650000] 083cbc00:  [<0805b2e2>] default_idle+0x1e/0x21
[44059948.650000] 083cbc0c:  [<0805eaf1>] init_idle_skas+0x20/0x23
[44059948.650000] 083cbc18:  [<080485bb>] start_kernel+0x17a/0x17c
[44059948.650000] 083cbc20:  [<0805eb1a>] start_kernel_proc+0x26/0x2a
[44059948.650000] 083cbc28:  [<0806a157>] run_kernel_thread+0x47/0x55
[44059948.650000] 083cbc38:  [<0805eaf4>] start_kernel_proc+0x0/0x2a
[44059948.650000] 083cbc48:  [<0806a135>] run_kernel_thread+0x25/0x55
[44059948.650000] 083cbcd8:  [<0805eaf4>] start_kernel_proc+0x0/0x2a
[44059948.650000] 083cbce4:  [<0805e893>] new_thread_handler+0xd0/0xff
[44059948.650000] 083cbce8:  [<0805eaf4>] start_kernel_proc+0x0/0x2a
[44059948.650000] 083cbd20:  [<082dddd8>] __restore+0x0/0x8
[44059948.650000] 083cbd60:  [<082dde71>] kill+0x11/0x20

Guest-Kernel is a 2.6.16.19-bs2. Host-Kernel is a Debian Sarge 2.6.8 =20
with kernel-patch-skas.

Thanks

                   Daniel