Re: 2.6.17-rt1

[Michal Piotrowski]

Hi Ingo,

On 18/06/06, Ingo Molnar <mingo@xxxxxxx> wrote:
> i have released the 2.6.17-rt1 tree, which can be downloaded from the
> usual place:
>
>    http://redhat.com/~mingo/realtime-preempt/

I get this when I reboot my system.

Jun 18 17:59:26 ltg01-fedora kernel: skge eth0: disabling interface
Jun 18 17:59:27 ltg01-fedora kernel: BUG: using smp_processor_id() in
preemptible [00000000] code: modprobe/20325
Jun 18 17:59:27 ltg01-fedora kernel: caller is drain_array+0x15/0xe5
Jun 18 17:59:27 ltg01-fedora kernel:  [<c0104647>] show_trace+0xd/0xf (8)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c010470c>] dump_stack+0x17/0x19 (12)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c01da50f>]
debug_smp_processor_id+0x7b/0x8c (32)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c015e044>] drain_array+0x15/0xe5 (32)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c015e26e>] __cache_shrink+0x35/0xab (32)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c015fac1>]
kmem_cache_destroy+0x76/0x12e (16)
Jun 18 17:59:27 ltg01-fedora kernel:  [<fdc6d23e>]
ip_conntrack_cleanup+0x80/0xad [ip_conntrack] (12)
Jun 18 17:59:27 ltg01-fedora kernel:  [<fdc7030e>]
ip_conntrack_standalone_fini+0x56/0x85 [ip_conntrack] (8)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c013a7c5>]
sys_delete_module+0x18f/0x1b6 (96)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c0102e73>]
sysenter_past_esp+0x54/0x75 (-4020)
Jun 18 17:59:27 ltg01-fedora kernel: ---------------------------
Jun 18 17:59:27 ltg01-fedora kernel: | preempt count: 00000001 ]
Jun 18 17:59:27 ltg01-fedora kernel: | 1-level deep critical section nesting:
Jun 18 17:59:27 ltg01-fedora kernel: ----------------------------------------
Jun 18 17:59:27 ltg01-fedora kernel: .. [<c01da4d5>] ....
debug_smp_processor_id+0x41/0x8c
Jun 18 17:59:27 ltg01-fedora kernel: .....[<c015e044>] ..   ( <=
drain_array+0x15/0xe5)
Jun 18 17:59:27 ltg01-fedora kernel:
Jun 18 17:59:27 ltg01-fedora kernel: ------------------------------
Jun 18 17:59:27 ltg01-fedora kernel: | showing all locks held by: |
(modprobe/20325 [f72380b0, 117]):
Jun 18 17:59:27 ltg01-fedora kernel: ------------------------------
Jun 18 17:59:27 ltg01-fedora kernel:
Jun 18 17:59:27 ltg01-fedora kernel: #001:             [c0313d04]
{cpucontrol.lock}
Jun 18 17:59:27 ltg01-fedora kernel: ... acquired at:
rt_down+0x11/0x28
Jun 18 17:59:27 ltg01-fedora kernel:
Jun 18 17:59:27 ltg01-fedora kernel: BUG: modprobe:20325 task might
have lost a preemption check!
Jun 18 17:59:27 ltg01-fedora kernel:  [<c0104647>] show_trace+0xd/0xf (8)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c010470c>] dump_stack+0x17/0x19 (12)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c011a884>]
preempt_enable_no_resched+0x4c/0x51 (20)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c01da517>]
debug_smp_processor_id+0x83/0x8c (16)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c015e044>] drain_array+0x15/0xe5 (32)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c015e26e>] __cache_shrink+0x35/0xab (32)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c015fac1>]
kmem_cache_destroy+0x76/0x12e (16)
Jun 18 17:59:27 ltg01-fedora kernel:  [<fdc6d23e>]
ip_conntrack_cleanup+0x80/0xad [ip_conntrack] (12)
Jun 18 17:59:27 ltg01-fedora kernel:  [<fdc7030e>]
ip_conntrack_standalone_fini+0x56/0x85 [ip_conntrack] (8)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c013a7c5>]
sys_delete_module+0x18f/0x1b6 (96)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c0102e73>]
sysenter_past_esp+0x54/0x75 (-4020)
Jun 18 17:59:27 ltg01-fedora kernel: ---------------------------
Jun 18 17:59:27 ltg01-fedora kernel: | preempt count: 00000000 ]
Jun 18 17:59:27 ltg01-fedora kernel: | 0-level deep critical section nesting:
Jun 18 17:59:27 ltg01-fedora kernel: ----------------------------------------
Jun 18 17:59:27 ltg01-fedora kernel:
Jun 18 17:59:27 ltg01-fedora kernel: ------------------------------
Jun 18 17:59:27 ltg01-fedora kernel: | showing all locks held by: |
(modprobe/20325 [f72380b0, 117]):
Jun 18 17:59:27 ltg01-fedora kernel: ------------------------------
Jun 18 17:59:27 ltg01-fedora kernel:
Jun 18 17:59:27 ltg01-fedora kernel: #001:             [c0313d04]
{cpucontrol.lock}
Jun 18 17:59:27 ltg01-fedora kernel: ... acquired at:
rt_down+0x11/0x28
Jun 18 17:59:27 ltg01-fedora kernel:
Jun 18 17:59:27 ltg01-fedora kernel: BUG: using smp_processor_id() in
preemptible [00000000] code: modprobe/20325
Jun 18 17:59:27 ltg01-fedora kernel: BUG: using smp_processor_id() in
preemptible [00000000] code: modprobe/20325
Jun 18 17:59:27 ltg01-fedora kernel: caller is drain_array+0x15/0xe5
Jun 18 17:59:27 ltg01-fedora kernel:  [<c0104647>] show_trace+0xd/0xf (8)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c010470c>] dump_stack+0x17/0x19 (12)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c01da50f>]
debug_smp_processor_id+0x7b/0x8c (32)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c015e044>] drain_array+0x15/0xe5 (32)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c015e26e>] __cache_shrink+0x35/0xab (32)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c015fac1>]
kmem_cache_destroy+0x76/0x12e (16)
Jun 18 17:59:27 ltg01-fedora kernel:  [<fdc6d248>]
ip_conntrack_cleanup+0x8a/0xad [ip_conntrack] (12)
Jun 18 17:59:27 ltg01-fedora kernel:  [<fdc7030e>]
ip_conntrack_standalone_fini+0x56/0x85 [ip_conntrack] (8)
Jun 18 17:59:27 ltg01-fedora kernel:  [<c013a7c5>]
sys_delete_module+0x18f/0x1b6 (96)
Jun 18 17:59:27 ltg01-fedora kernel: Kernel logging (proc) stopped.

Here is a config file
http://www.stardust.webpages.pl/files/rt/2.6.17-rt1/rt-config

Regards,
Michal

--
Michal K. K. Piotrowski
LTG - Linux Testers Group
(http://www.stardust.webpages.pl/ltg/wiki/)
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