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Date: Tue, 1 Jul 2008 15:42:14 -0400 (EDT)
From: Steven Rostedt <rostedt@goodmis.org>
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To: Noah Watkins <noahwatkins@gmail.com>
cc: Sven-Thorsten Dietrich <sven@thebigcorporation.com>,
       LKML <linux-kernel@vger.kernel.org>,
       RT <linux-rt-users@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>,
       Thomas Gleixner <tglx@linutronix.de>,
       paulmck <paulmck@linux.vnet.ibm.com>
Subject: Re: [BUG RT] 2.6.25.8-rt7 on 8-way
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On Tue, 1 Jul 2008, Noah Watkins wrote:

>
> While I have disabled RCU tracing to suppress the messages, I am
> getting them in another context:
>
> BUG: using smp_processor_id() in preemptible [00000000] code: sshd/3114
> caller is __qdisc_run+0x12e/0x1b5
> Pid: 3114, comm: sshd Not tainted 2.6.25.8-rt7 #3
>
> Call Trace:
>  [<ffffffff8112da39>] debug_smp_processor_id+0xad/0xb8
>  [<ffffffff8120e264>] __qdisc_run+0x12e/0x1b5
>  [<ffffffff811ff1c8>] dev_queue_xmit+0x140/0x278
>  [<ffffffff8122239e>] ip_queue_xmit+0x2c2/0x350
>  [<ffffffff8127f8a6>] add_preempt_count+0x12/0x94
>  [<ffffffff8108263e>] __inc_zone_state+0x6a/0x88
>  [<ffffffff81231ffe>] tcp_transmit_skb+0x77e/0x7ba
>  [<ffffffff8109aa60>] kmem_cache_alloc_node+0x129/0x152
>  [<ffffffff81233a75>] __tcp_push_pending_frames+0x713/0x7df
>  [<ffffffff81228da2>] tcp_sendmsg+0x93a/0xa52
>  [<ffffffff811f0e97>] sock_aio_write+0xf8/0x110
>  [<ffffffff8109feeb>] do_sync_write+0xc9/0x10c
>  [<ffffffff81046da6>] autoremove_wake_function+0x0/0x2e
>  [<ffffffff8103868b>] current_fs_time+0x1e/0x24
>  [<ffffffff810a06ae>] vfs_write+0xc0/0x156
>  [<ffffffff810a0c67>] sys_write+0x48/0x74
>  [<ffffffff8100bf6b>] tracesys+0xdc/0xe1
>
>

Thanks for reporting this. This is a different issue. I'll investigate it.

-- Steve

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