Date:	Wed, 10 Jun 2009 10:19:01 -0700 (PDT)
From:	Burak Gorkemli <burakgmail-dccp@...oo.com>
To:	Gerrit Renker <gerrit@....abdn.ac.uk>
Cc:	dccp@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: yet another panic on 2.6.30-rc6


Hi Gerrit,

Sorry for the late reply, I have just found the time today to pull the latest
tree from your site and test it. It still crashes unfortunately, giving similar
console output, as given below. As for the transient problems, I had the
same issue with an older kernel, 2.6.26-rc5, again pulled from your site.

BTW, how to print EIP after the panic?

The console output of the latest panic is as follows:

[<>] ? ccid3_hc_tx_no_feedback_timer
[<>] ? default_spin_lock_flags
[<>] ? elv_queue_empty
[<>] ? blk_run_queue
[<>] ? kobject_put
[<>] ? trace_hardirqs_off_thunk
[<>] error_code
[<>] ? __mode_timer
[<>] ? do_invalid_op
[<>] ? ccid3_hc_tx_no_feedback_timer
[<>] run_timer_softirq
[<>] ? ccid3_hc_tx_no_feedback_timer
[<>] ? ccid3_hc_tx_no_feedback_timer
[<>] __do_softirq
[<>] ? __do_softirq
<IRQ> [<>] ? irq_exit
[<>] ? smp_apic_timer_interrupt
[<>] ? apic_timer_interrupt
[<>] ? native_safe_halt
[<>] ? default_idle
[<>] ? cpu_idle
[<>] ? rest_init
[<>] ? start_kernel
[<>] ? i386_start_kernel

Thanks

 --
Burak



----- Original Message ----
> From: Gerrit Renker <gerrit@....abdn.ac.uk>
> To: Burak Gorkemli <burakgmail-dccp@...oo.com>
> Cc: dccp@...r.kernel.org
> Sent: Saturday, June 6, 2009 9:01:53 PM
> Subject: Re: yet another panic on 2.6.30-rc6
> 
> Hi Burak,
> 
> thank you for raising this. We need to isolate the cause of the problem.
> 
> The dccp test tree is based on the netdev-2.6 tree maintained by Dave
> Miller, which itself contains other trees (I think the total number of
> kernel trees is ~130).
> 
> I am testing this tree myself, though mostly with audio streaming over
> WiFi links, using the paraslash streamer.
> 
> From looking through the trace it looks as though this is a timer
> problem. Any chance of getting the EIP value to see where it 
> 
> Regarding reproducability -- unfortunately I had just put in a new
> revision onto eden-feed. Can you please consider pulling again from
> 
>     git://eden-feed.erg.abdn.ac.uk/dccp_exp [subtrees dccp/ccid4]
> 
> If this problem persists, it would be good to CC: netdev@...r as well.
> 
> It is quite possible that the problem may have cleared itself as a
> result of using more recent sources. The dccp test tree gets a fresh
> base at least every week, to avoid transient problems.
> 
> Thanks in advance
> Gerrit
> 
> 
> Quoting Burak Gorkemli:
> |
> | The console output for this one is as follows:
> |
> | [<>] do_trap
> | [<>] ? do_invalid_op
> | [<>] do_invalid_op
> | [<>] ? ccid3_hc_tx_no_feedback_timer
> | [<>] ? e1000_clean_rx_irq
> | [<>] ? trace_hardirqs_off_thunk
> | [<>] error_code
> | [<>] ? __mod_timer
> | [<>] ? do_invalid_op
> | [<>] ? ccid3_hc_tx_no_feedback_timer
> | [<>] run_timer_softirq
> | [<>] ? ccid3_hc_tx_no_feedback_timer
> | [<>] ? ccid3_hc_tx_no_feedback_timer
> | [<>] __do_softirq
> | [<>] ? __do_softirq
> | [<>] ? irq_exit
> | [<>] ? smp_apic_timer_interrupt
> | [<>] ? apic_timer_interrupt
> | [<>] ? native_safe_halt
> | [<>] ? default_idle
> | [<>] ? cpu_idle
> | [<>] ? rest_init
> | [<>] ? start_kernel
> | [<>] ? i386_start_kernel
> |
> |  --
> | Burak
> |
> |
> |
> | ----- Original Message ----
> | > From: Burak Gorkemli 
> | > To: dccp@...r.kernel.org
> | > Sent: Saturday, June 6, 2009 1:58:59 AM
> | > Subject: panic on 2.6.30-rc6
> | >
> | >
> | > Hi,
> | >
> | > I am having kernel panic while doing video streaming tests with ccid3, using
> | > kernel version 2.6.30-rc6, pulled from Gerrit's
> | > tree. The crash happens on the receiver node (there is a sender node and a
> | > receiver node, both Linux boxes running 2.6.30-rc6) and it is quite
> | > reproducible. The console output is as follows:
> | >
> | > [<>] ? do_invalid_op
> | > [<>] do_invalid_op
> | > [<>] ? ccid3_hc_tx_no_feedback_timer
> | > [<>] ? __wake_up
> | > [<>] ? __kfree_skb
> | > [<>] ? trace_hardirqs_off_thunk
> | > [<>] error_code
> | > [<>] ? __mod_timer
> | > [<>] ? do_invalid_op
> | > [<>] ? ccid3_hc_tx_no_feedback_timer
> | > [<>] run_timer_softirq
> | > [<>] ? ccid3_hc_tx_no_feedback_timer
> | > [<>] ? ccid3_hc_tx_no_feedback_timer
> | > [<>] __do_softirq
> | > [<>] ? __do_softirq
> | > [<>] ? irq_exit
> | > [<>] ? smp_apic_timer_interrupt
> | > [<>] ? apic_timer_interrupt
> | > [<>] ? native_safe_halt
> | > [<>] ? default_idle
> | > [<>] ? cpu_idle
> | > [<>] ? rest_init
> | > [<>] ? start_kernel
> | > [<>] ? i386_start_kernel
> | >
> | > Any comments?
> --
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