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Date: Sat, 3 Oct 2009 13:00:03 +0200
From: Frederic Weisbecker <fweisbec@gmail.com>
To: Matti Aarnio <matti.aarnio@zmailer.org>
Cc: linux-kernel@vger.kernel.org, Steven Rostedt <rostedt@goodmis.org>,
       Ingo Molnar <mingo@elte.hu>
Subject: Re: ftrace WARNING during boot
Message-ID: <20091003110002.GA6162@nowhere>
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On Sat, Oct 03, 2009 at 01:53:18PM +0300, Matti Aarnio wrote:
> This is perhaps already fixed, as I have two a bit newer kernels than this one,
> but reporting is better than being silent..


Hi,

Which kernel is this? Does it happen in the current 2.6.32-rc1 ?

Thanks.


> 
>   .....................
>  kernel: rtc_cmos 00:04: setting system clock to 2009-10-02 23:21:17 UTC (1254525677)
>  kernel: Initalizing network drop monitor service
>  kernel: Freeing unused kernel memory: 3196k freed
>  kernel: NX-protecting the kernel data: ffffffff8150e000, 4469 pages
>  kernel: Write protecting the kernel read-only data: 7392k
>  kernel: dracut: dracut-002-2.gitc53acc30.fc12
>  kernel: udev: starting version 145
>  kernel: usb 1-5: new high speed USB device using ehci_hcd and address 4
>  kernel: ------------[ cut here ]------------
>  kernel: WARNING: at kernel/trace/ftrace.c:1003 ftrace_bug+0x198/0x27e() (Not tainted)
>  kernel: Hardware name: System Product Name
>  kernel: Modules linked in: i2c_core(+)
>  kernel: Pid: 87, comm: modprobe Not tainted 2.6.31-33.fc12.x86_64 #1
>  kernel: Call Trace:
>  kernel: [<ffffffff810642ec>] warn_slowpath_common+0x95/0xc3
>  kernel: [<ffffffffa0003072>] ? i2c_new_dummy+0x8/0x5e [i2c_core]
>  kernel: [<ffffffff81064341>] warn_slowpath_null+0x27/0x3d
>  kernel: [<ffffffff810d4ace>] ftrace_bug+0x198/0x27e
>  kernel: [<ffffffffa0003072>] ? i2c_new_dummy+0x8/0x5e [i2c_core]
>  kernel: [<ffffffff810d5d26>] ftrace_convert_nops+0x201/0x2b9
>  kernel: [<ffffffffa0003072>] ? i2c_new_dummy+0x8/0x5e [i2c_core]
>  kernel: [<ffffffff810d5e2a>] ftrace_module_notify+0x4c/0x7f
>  kernel: [<ffffffff81509c65>] notifier_call_chain+0x72/0xba
>  kernel: [<ffffffff81086e71>] ? __blocking_notifier_call_chain+0x4c/0x8e
>  kernel: [<ffffffff81086e88>] __blocking_notifier_call_chain+0x63/0x8e
>  kernel: [<ffffffff81086eda>] blocking_notifier_call_chain+0x27/0x3d
>  kernel: [<ffffffff810a472a>] sys_init_module+0xb7/0x249
>  kernel: [<ffffffff81011f42>] system_call_fastpath+0x16/0x1b
>  kernel: ---[ end trace fbf9054ae0f212c7 ]---
>  kernel: ftrace faulted on writing [<ffffffffa0003072>] i2c_new_dummy+0x8/0x5e [i2c_core]
>  kernel: usb 1-5: New USB device found, idVendor=0424, idProduct=2504
>  kernel: usb 1-5: New USB device strings: Mfr=0, Product=0, SerialNumber=0
>  kernel: usb 1-5: configuration #1 chosen from 1 choice
>  kernel: hub 1-5:1.0: USB hub found
>  kernel: hub 1-5:1.0: 4 ports detected
>   ..................
> --
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