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Date: Tue, 4 Apr 2006 15:09:53 -0700
From: Andrew Morton <akpm@osdl.org>
To: Zan Lynx <zlynx@acm.org>
Cc: linux-kernel@vger.kernel.org, rl@hellgate.ch,
       "John W. Linville" <linville@tuxdriver.com>
Subject: Re: 2.6.17-rc1-mm1
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Zan Lynx <zlynx@acm.org> wrote:
>
> On Tue, 2006-04-04 at 01:45 -0700, Andrew Morton wrote:
> > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.17-rc1/2.6.17-rc1-mm1/
> 
> Has anyone seen this yet?
> 
> BUG: scheduling while atomic: mii-tool/0x00000001/2968
>  <c02db7f7> schedule+0x43/0x540   
>  <c02dc617> schedule_timeout+0x7a/0x95
>  <c011d687> process_timeout+0x0/0x5   
>  <c011e8a4> msleep+0x1a/0x1f
>  <e09100c9> rhine_disable_linkmon+0x40/0xf1 [via_rhine]   
>  <e09101a6> mdio_read+0x1f/0xab [via_rhine]
>  <e08c7443> generic_mii_ioctl+0x6c/0x13f [mii]   
>  <e0911900> netdev_ioctl+0x2e/0x4e [via_rhine]
>  <e09118d2> netdev_ioctl+0x0/0x4e [via_rhine]   
>  <c02890a7> dev_ifsioc+0x3b8/0x3d2
>  <c0289438> dev_ioctl+0x34e/0x47a    
>  <c027fc63> sock_ioctl+0x0/0x1c0
>  <c015b694> do_ioctl+0x1c/0x5d  
>  <c015b917> vfs_ioctl+0x242/0x255
>  <c015b954> sys_ioctl+0x2a/0x42  
>  <c02dd80f> sysenter_past_esp+0x54/0x75
> 
> The system also has Intel Ethernet Pro 100 and SiS900 Ethernet
> controllers, but only the VIA Rhine driver does this.

netdev_ioctl() does spin_lock_irq(), so the mdelay->msleep conversion (now
in mainline) was insufficient.

Someone needs to turn on those nice debugging options...

hmm, according to git-whatchanged, this bug has been in there since October
last year.  Weird that it hasn't been spotted before now.