linux-kernel - Re: kernel 3.0: BUG: soft lockup: find_get

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Date:	Sun, 21 Aug 2011 19:59:26 +0200
From:	Maciej Rutecki <maciej.rutecki@...il.com>
To:	Justin Piszcz <jpiszcz@...idpixels.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: kernel 3.0: BUG: soft lockup: find_get_pages+0x51/0x110

On poniedziałek, 15 sierpnia 2011 o 18:43:22 Justin Piszcz wrote:
> Hello,
> 
> What causes this(?) -- am I out of memory(?) or is this a kernel bug?
> 
> [104147.717815] BUG: soft lockup - CPU#13 stuck for 23s! [kswapd0:934]
> [104147.717820] Modules linked in: dm_mod tcp_diag parport_pc ppdev lp
> parport inet_diag ub pl2303 ftdi_sio snd_usb_audio snd_pcm_oss
> snd_mixer_oss snd_pcm snd_page_alloc snd_hwdep snd_usbmidi_lib
> snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event
> snd_seq snd_timer snd_seq_device snd soundcore usbserial cdc_acm nouveau
> serio_raw ttm drm_kms_helper drm agpgart i2c_algo_bit mxm_wmi wmi
> i7core_edac edac_core video [104147.717872] CPU 13
> [104147.717874] Modules linked in: dm_mod tcp_diag parport_pc ppdev lp
> parport inet_diag ub pl2303 ftdi_sio snd_usb_audio snd_pcm_oss
> snd_mixer_oss snd_pcm snd_page_alloc snd_hwdep snd_usbmidi_lib
> snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event
> snd_seq snd_timer snd_seq_device snd soundcore usbserial cdc_acm nouveau
> serio_raw ttm drm_kms_helper drm agpgart i2c_algo_bit mxm_wmi wmi
> i7core_edac edac_core video [104147.717916]
> [104147.717921] Pid: 934, comm: kswapd0 Not tainted 3.0.0 #4 Supermicro
> X8DTH-i/6/iF/6F/X8DTH [104147.717928] RIP: 0010:[<ffffffff81081f71>] 
> [<ffffffff81081f71>] find_get_pages+0x51/0x110 [104147.717940] RSP:
> 0018:ffff880626127ba0  EFLAGS: 00000246
[...]

It's regression? 2.6.39 works OK?

Regards
-- 
Maciej Rutecki
http://www.maciek.unixy.pl
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