linux-kernel - Re: textsearch in module = BUG: scheduling while atomic

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Message-ID: <472E458B.50903@gmail.com>
Date:	Sun, 04 Nov 2007 23:19:55 +0100
From:	Jiri Slaby <jirislaby@...il.com>
To:	Felipe Dias <felipediassss@...il.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: textsearch in module = BUG: scheduling while atomic

On 11/04/2007 11:16 PM, Jiri Slaby wrote:
> On 11/04/2007 11:05 PM, Felipe Dias wrote:
>> Ow sorry... the warning:
>>
>> BUG: scheduling while atomic: gnome-cups-icon/0x00000101/3827
>>  [<c02aefe6>] __sched_text_start+0x56/0x7c8
>>  [<c0130139>] autoremove_wake_function+0x14/0x33
>>  [<c0119284>] __wake_up_common+0x35/0x53
>>  [<c01197f6>] __wake_up+0x32/0x43
>>  [<c02af847>] wait_for_completion+0x6a/0x9f
>>  [<c011b6ae>] default_wake_function+0x0/0xc
>>  [<c012cdff>] call_usermodehelper_keys+0xad/0xc5
>>  [<c012ceec>] request_module+0xd5/0xe6
> 
> Seems like it is not inteded for using in atomic at all (you probably passed an
> unknown algo here to the prepare function). You seem to have to use a workqueue
> if it is possible or prepare the serach before the interrupt occurs.

Or pass 0 instead of TS_AUTOLOAD.
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