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SubjectRe: [patch] Real-Time Preemption, -RT-2.6.9-rc4-mm1-U7
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Date
On Tue, 2004-10-19 at 11:00, Ingo Molnar wrote:
> i have released the -U7 Real-Time Preemption patch:
>
> http://redhat.com/~mingo/realtime-preempt/realtime-preempt-2.6.9-rc4-mm1-U7
>
> this too is a fixes-only release.

First Ux I try to boot, on install I get this:

WARNING:
/lib/modules/2.6.8-1.520.1rU7.ll.rhfc2.ccrma/kernel/drivers/scsi/aacraid/aacraid.ko needs unknown symbol __you_cannot_kmalloc_that_much
WARNING:
/lib/modules/2.6.8-1.520.1rU7.ll.rhfc2.ccrma/kernel/drivers/message/i2o/i2o_block.ko needs unknown symbol i2o_msg_in_to_virt
WARNING:
/lib/modules/2.6.8-1.520.1rU7.ll.rhfc2.ccrma/kernel/drivers/message/i2o/i2o_core.ko needs unknown symbol i2o_msg_in_to_virt
WARNING:
/lib/modules/2.6.8-1.520.1rU7.ll.rhfc2.ccrma/kernel/drivers/message/i2o/i2o_core.ko needs unknown symbol i2o_msg_out_to_virt
WARNING:
/lib/modules/2.6.8-1.520.1rU7.ll.rhfc2.ccrma/kernel/drivers/message/i2o/i2o_scsi.ko needs unknown symbol i2o_msg_in_to_virt

No luck booting, I get a kernel panic, the last lines printed to the
screen are like this (transcribed by hand, there may be errors):

printk+0x17/0x20 (20)
print_preempt_trace+0x51/0xa0 (12)
print_traces+0x1e/0x40 (24)
show_stack+0x70/0x90 (8)
error_code+0x2d/0x38 (20)
down_write_interruptible+0xba/0x278 (52)
scsi_error_handler+0x98/0x1a0 [scsi_mod] (44)
scsi_error_handler+0x0/0x1a0 [scsi_mod] (284)
kernel_thread_helper+0x5/0x18 (8)

preempt count: 04000008
. 8 level deep critical section nesting:
.. entry 1: down_write_interruptible+0x273/0x278 / (0x0)
.. entry 2: down_write_interruptible+0x5a/0x278 / (0x0)
.. entry 3: __schedule+0x34/0x650 / (0x0)
.. entry 4: __schedule+0xcb/0x650 / (0x0)
.. entry 5: __schedule+0x34/0x650 / (0x0)
.. entry 6: __schedule+0xcb/0x650 / (0x0)
.. entry 7: die+0x36/0x180 / (0x0)
.. entry 8: print_traces+0xd/0x40 / (0x0)
<0> Kernel panic - not syncing: Fatal exception in interrupt

I hope this can be useful...
-- Fernando


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