RE: help needed, 2.6.31.6-rt19 hang with network user app

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On Fri, 20 Nov 2009, Leyendecker, Robert wrote:

> Here is what was in the log/messages - I assume this is what was
> sent to kernel.org.  Host B is reporting destination unreachables at
> time of freeze.  Hope this log is useful. I have the full log from
> start of boot I can zip it up if you would like. At the bottom you
> can see where it is rebooting due to power cycle.

> Nov 20 21:12:00 localhost kernel: BUG: using smp_processor_id() in preemptible [00000000] code: smash/6801
> Nov 20 21:12:00 localhost kernel: caller is __schedule+0xe/0x7d4
> Nov 20 21:12:00 localhost kernel: Pid: 6801, comm: smash Not tainted 2.6.31.6-rt19 #1
> Nov 20 21:12:00 localhost kernel: Call Trace:
> Nov 20 21:12:00 localhost kernel: [<c06dc3df>] ? printk+0xf/0x18
> Nov 20 21:12:00 localhost kernel: [<c05499a6>] debug_smp_processor_id+0xa6/0xbc
> Nov 20 21:12:00 localhost kernel: [<c06dc689>] __schedule+0xe/0x7d4
> Nov 20 21:12:00 localhost kernel: [<c046621f>] ? audit_syscall_exit+0xfa/0x10f
> Nov 20 21:12:00 localhost kernel: [<c040a955>] ? syscall_trace_leave+0xc8/0xef
> Nov 20 21:12:00 localhost kernel: [<c040338a>] work_resched+0x5/0x19

Hmm, that comes from the low level code. We should have interrupts
disabled here, but I have a hard time to figure out the call path in
the ASM maze of entry_32.S. Still investigating.

Thanks,

	tglx

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