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Message-ID: <1259198431.2870.17.camel@falcon.domain.org>
Date:	Thu, 26 Nov 2009 09:20:31 +0800
From:	Wu Zhangjin <wuzhangjin@...il.com>
To:	Andreas Mohr <andi@...as.de>
Cc:	ralf@...ux-mips.org, tiwai@...e.de, linux-kernel@...r.kernel.org
Subject: Re: snd_usb_audio OOPS on MIPSEL - is that the mmap issue?

On Thu, 2009-11-26 at 00:12 +0100, Andreas Mohr wrote:
> Hi,
> 
> when running
> cat X.mp3|madplay -
> 
> on my ASUS WL-500gP v2 Debian 2.6.30.9, I get lots of "Problems" (tm),
> with a backtrace that looks related:
> 
> [<80090c10>] swap_info_get+0x74/0xfc
> [<80093090>] free_swap_and_cache+0x20/0x220
> [<80083480>] unmap_vmas+0x418/0x63c
> [<80087c3c>] exit_mmap+0xb8/0x148
> [<8002d5c0>] mmput+0xbc/0x1d4
> [<800325fc>] exit_mm+0x260/0x298
> [<8003491c>] do_exit+0x1cc/0x6a0
> [<80014034>] nmi_exception_handler+0x0/0x34
> 
> This would perhaps be the MIPS mmap issue
> (see e.g. http://patchwork.kernel.org/patch/60430/ ), right?
> 

Did that patch work for you?

This bug is really bad, Takashi Iwai and Ralf had a plan to add a
dma_mmap_coherent() function for 2.6.34 to fix it eventually.

but for 2.6.33, perhaps that patch is a good temp solution(not enough
for the whole bug, but minimally) ;)

> 
> Oh well, b44 netconsole lockup (just fixed it),
> non-working WLAN (seems most close to fully working after all,
> incredible as that may be given my initial thoughts),
> crashing usb-audio, non-transferring ftdi_sio.
> Does anything actually WORK on this box at all???
> That's almost a worse status than my Aspire One A110L once had...
> (and that's saying a LOT given that that one had more than 10 issues).
> It will get better eventually, I'm sure...
> 
> Thanks,
> 
> Andreas Mohr
> 
> 
> $ ./netconsole.sh 
> 
> 
> 
> kobject: 'usb_endpoint' (81ecaa80): kobject_add_internal: parent: '2-1.1.4:1.1', set: '<NULL>'
> kobject: 'usbdev2.5_ep01' (81f0c890): kobject_add_internal: parent: 'usb_endpoint', set: 'devices'
> kobject: 'usbdev2.5_ep01' (81f0c890): kobject_uevent_env                                          
> kobject: 'usbdev2.5_ep01' (81f0c890): fill_kobj_path: path = '/devices/ssb0:1/usb2/2-1/2-1.1/2-1.1.4/2-1.1.4:1.1/usb_endpoint/usbdev2.5_ep01'
> setting usb interface 1:1                                                                                                                    
> Instruction bus error, epc == 80005074, ra == 80000018                                                                                       
> Oops[#1]:                                                                                                                                    
> Cpu 0                                                                                                                                        
> $ 0   : 00000000 1000d000 c047f000 00000001                                                                                                  
> $ 4   : c047f040 00000000 000c0300 c047f000                                                                                                  
> $ 8   : 00000000 c053f300 80357dbc 00080000                                                                                                  
> $12   : 81016c40 00000000 40000000 00000000                                                                                                  
> $16   : 00060180 00001000 00000002 00010000                                                                                                  
> $20   : 81474380 81e87c00 81e87c00 81ed5e00                                                                                                  
> $24   : 00000000 80018994                                                                                                                    
> $28   : 81f6a000 81f6bd40 81474080 80000018                                                                                                  
> Hi    : 00000000                                                                                                                             
> Lo    : 00601800                                                                                                                             
> epc   : 80005074 __bzero+0x38/0x164                                                                                                          
>     Not tainted                                                                                                                              
> ra    : 80000018 0x80000018                                                                                                                  
> Status: 1000d003    KERNEL EXL IE                                                                                                            
> Cause : 00800018                                                                                                                             
> PrId  : 00029029 (Broadcom BCM3302)                                                                                                          
> Modules linked in: snd_usb_audio snd_pcm_oss snd_mixer_oss snd_pcm snd_timer evdev snd_page_alloc snd_usb_lib snd_rawmidi snd_seq_device snd_hwdep usbhid hid snd input_core soundcore nfs lockd auth_rpcgss sunrpc ipv6 arc4 ecb b43 mac80211 cfg80211                                       
> Process madplay (pid: 1362, threadinfo=81f6a000, task=81d46838, tls=00000000)                                                                  
> Stack : 00010000 80787218 81474380 00002000 00002000 00001000 00000002 80772a60                                                                
>         81ed5e00 10010850 8125ca00 1000c210 00000000 80787124 80dc4a00 00000004                                                                
>         00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000018                                                                
>         00000000 00000000 00000000 00000000 00000000 00000000 00000000 ffffffff                                                                
>         ffffffff 00000000 00000000 00000000 00000000 00000000 00000000 80000000                                                                
>         ...                                                                                                                                    
> Call Trace:                                                                                                                                    
> [<80005074>] __bzero+0x38/0x164                                                                                                                
> 
> 
> Code: 30c8003c  01244821  24840040 <ac85ffc0> ac85ffc4  ac85ffc8  ac85ffcc  ac85ffd0  ac85ffd4 
> Disabling lock debugging due to kernel taint                                                   
> Instruction bus error, epc == 80033968, ra == 80000018                                         
> Oops[#2]:                                                                                      
> Cpu 0                                                                                          
> $ 0   : 00000000 1000d001 00000000 80000000                                                    
> $ 4   : 00000000 0000000d 7fc3b0e8 00000000                                                    
> $ 8   : 00000000 00000000 00000000 81d48838                                                    
> $12   : 81ecf9e0 feced300 81d36868 0000000d                                                    
> $16   : 00000551 81d48838 00000000 00000000                                                    
> $20   : 00000003 00000000 813d1ea8 00000000                                                    
> $24   : 00000000 00000000                                                                      
> $28   : 813d0000 813d1e20 ffffffff 80000018                                                    
> Hi    : 00000000                                                                               
> Lo    : 00000000                                                                               
> epc   : 80033968 wait_consider_task+0x484/0xd24                                                
>     Tainted: G      D                                                                          
> ra    : 80000018 0x80000018                                                                    
> Status: 1000d003    KERNEL EXL IE                                                              
> Cause : 00800018                                                                               
> PrId  : 00029029 (Broadcom BCM3302)                                                            
> Modules linked in: snd_usb_audio snd_pcm_oss snd_mixer_oss snd_pcm snd_timer evdev snd_page_alloc snd_usb_lib snd_rawmidi snd_seq_device snd_hwdep usbhid hid snd input_core soundcore nfs lockd auth_rpcgss sunrpc ipv6 arc4 ecb b43 mac80211 cfg80211                                       
> Process bash (pid: 1191, threadinfo=813d0000, task=81d98838, tls=00000000)                                                                     
> Stack : 00000040 800950b4 81d98960 8000a3a0 808d1004 808b1700 81ee3480 8002c5bc                                                                
>         00000001 00000003 02625a00 00000000 00000003 00000000 81d48838 81d98838                                                                
>         81d9894c 00000000 00000003 00000000 813d1ea8 0000000e ffffffff 80034324                                                                
>         81ddeb9c 00000006 00000001 81dc5870 00000003 00000000 0000000e 00000000                                                                
>         7fc3b0e8 00000000 fffffff6 00000000 81d98838 80029018 81e871a8 81e871a8                                                                
>         ...                                                                                                                                    
> Call Trace:                                                                                                                                    
> [<80033968>] wait_consider_task+0x484/0xd24                                                                                                    
> [<80034324>] do_wait+0x11c/0x378                                                                                                               
> [<80034634>] sys_wait4+0xb4/0xe0                                                                                                               
> [<800031f0>] stack_done+0x20/0x3c                                                                                                              
> 
> 
> Code: 00431024  14400218  00000000 <acc50000> 1480003f  00000000  12e0003e  26e80004  8f870018 
> Instruction bus error, epc == 80004db8, ra == 80000018                                         
> Oops[#3]:                                                                                      
> Cpu 0                                                                                          
> $ 0   : 00000000 1000d000 81c08480 00000000                                                    
> $ 4   : 7fdabd10 81c0ddd0 00000000 1000d001                                                    
> $ 8   : 00000000 00000000 00000000 813d0000                                                    
> $12   : 81c084b0 69800e80 81d36868 00000000                                                    
> $16   : 00000004 00000000 81c0ddc0 81c0ddc0                                                    
> $20   : 7fdabd10 00000000 0000000b 00000000                                                    
> $24   : 00000000 80018994                                                                      
> $28   : 81c0c000 81c0dd98 00000001 80000018                                                    
> Hi    : 00000000                                                                               
> Lo    : 00000000                                                                               
> epc   : 80004db8 __copy_user+0xd4/0x2bc                                                        
>     Tainted: G      D                                                                          
> ra    : 80000018 0x80000018                                                                    
> Status: 1000d003    KERNEL EXL IE                                                              
> Cause : 00800018                                                                               
> PrId  : 00029029 (Broadcom BCM3302)                                                            
> Modules linked in: snd_usb_audio snd_pcm_oss snd_mixer_oss snd_pcm snd_timer evdev snd_page_alloc snd_usb_lib snd_rawmidi snd_seq_device snd_hwdep usbhid hid snd input_core soundcore nfs lockd auth_rpcgss sunrpc ipv6 arc4 ecb b43 mac80211 cfg80211                                       
> Process init (pid: 1, threadinfo=81c0c000, task=81c08480, tls=00000000)                                                                        
> Stack : 81f11000 81c0dda8 81c0df00 800a1b7c 81c0ddc0 81c0ddc4 81c0ddc8 81c0ddcc                                                                
>         81c0ddd0 81c0ddd4 00000400 00000000 00000000 00000000 00000000 00000000                                                                
>         00000001 8006fd58 81c0de30 81f11000 80357de0 00000000 00000000 00000000                                                                
>         81f11000 ffffff9c 81c0dea8 800950b4 00000003 00000001 81f11000 ffffff9c                                                                
>         81c0dea8 800a5914 0000000d 00000000 00000000 00000000 000000cb 00001180                                                                
>         ...                                                                                                                                    
> Call Trace:                                                                                                                                    
> [<80004db8>] __copy_user+0xd4/0x2bc                                                                                                            
> 
> 
> Code: 8ca80000  24a50004  24c6fffc <ac880000> 1706fffb  24840004  10c00040  00864821  240a0020 
> Instruction bus error, epc == 800a8db0, ra == 80000018                                         
> Oops[#4]:                                                                                      
> Cpu 0                                                                                          
> $ 0   : 00000000 1000d000 00000000 00000000                                                    
> $ 4   : 00000000 8053db80 00000002 8053db80                                                    
> $ 8   : 00000000 80357e10 00080000 81c0c000                                                    
> $12   : 81d21868 61c06a00 81d36868 00000000                                                    
> $16   : 8053db98 fffffffc 80a02c00 fffffffc                                                    
> $20   : 8053db98 00000000 00000000 8053db70                                                    
> $24   : 00000000 802577b0                                                                      
> $28   : 8053c000 8053db60 00462070 80000018                                                    
> Hi    : 00000000                                                                               
> Lo    : 00000000                                                                               
> epc   : 800a8db0 do_sys_poll+0x2d0/0x388                                                       
>     Tainted: G      D                                                                          
> ra    : 80000018 0x80000018                                                                    
> Status: 1000d003    KERNEL EXL IE                                                              
> Cause : 00800018                                                                               
> PrId  : 00029029 (Broadcom BCM3302)                                                            
> Modules linked in: snd_usb_audio snd_pcm_oss snd_mixer_oss snd_pcm snd_timer evdev snd_page_alloc snd_usb_lib snd_rawmidi snd_seq_device snd_hwdep usbhid hid snd input_core soundcore nfs lockd auth_rpcgss sunrpc ipv6 arc4 ecb b43 mac80211 cfg80211                                       
> Process rpc.nfsd (pid: 1146, threadinfo=8053c000, task=81d21838, tls=00000000)                                                                 
> Stack : 00000000 00000001 001200d2 00000000 00000000 00000000 00000001 00000000                                                                
>         00000000 00000002 00000004 000000c3 00000005 000000c3 8053f2a8 00000001                                                                
>         80a59614 2aac5000 00562717 80084ba4 81e22354 800272ac 00000001 80340000                                                                
>         8053dd78 8033ff68 ffffffff 803b0000 803b0000 803b0000 8033d9d0 000098dc                                                                
>         803b0000 8053dc30 803af690 803b0000 8033d9d0 8004e5bc ffffffff 80026764                                                                
>         ...                                                                                                                                    
> Call Trace:                                                                                                                                    
> [<800a8db0>] do_sys_poll+0x2d0/0x388                                                                                                           
> [<800a9198>] sys_poll+0x8c/0xfc                                                                                                                
> [<800031f0>] stack_done+0x20/0x3c                                                                                                              
> 
> 
> Code: 0802a375  00004021  94a2000e <a7c20006> 1460000d  24a50008  24840001  27de0008  0086102a 
> Instruction bus error, epc == 800051e8, ra == 80000018                                         
> Oops[#5]:                                                                                      
> Cpu 0                                                                                          
> $ 0   : 00000000 1000d000 00000000 7fbed27c                                                    
> $ 4   : 80aaf000 7fbed27c 00001000 00001000                                                    
> $ 8   : 00000000 00001000 80aaf000 00080000                                                    
> $12   : 810155e0 00000000 81d36868 00000000                                                    
> $16   : 7fbed27c 803c0000 000001a4 00000097                                                    
> $20   : 00000097 00000006 0000000e 000000fe                                                    
> $24   : 00000001 80197e90                                                                      
> $28   : 81e9e000 81e9fee0 00000000 80000018                                                    
> Hi    : 00000000                                                                               
> Lo    : 00000000                                                                               
> epc   : 800051e8 __strncpy_from_user_nocheck_asm+0x8/0x50                                      
>     Tainted: G      D                                                                          
> ra    : 80000018 0x80000018                                                                    
> Status: 1000d003    KERNEL EXL IE                                                              
> Cause : 00800018                                                                               
> PrId  : 00029029 (Broadcom BCM3302)                                                            
> Modules linked in: snd_usb_audio snd_pcm_oss snd_mixer_oss snd_pcm snd_timer evdev snd_page_alloc snd_usb_lib snd_rawmidi snd_seq_device snd_hwdep usbhid hid snd input_core soundcore nfs lockd auth_rpcgss sunrpc ipv6 arc4 ecb b43 mac80211 cfg80211                                       
> Process udevd (pid: 274, threadinfo=81e9e000, task=81d36838, tls=00000000)                                                                     
> Stack : 00000008 800a9e44 00000000 00000004 00000000 ffffff9c 00002301 80095968                                                                
>         00000001 00450000 00000000 801fc8a8 0000015f 00000053 00000301 000001a4                                                                
>         7fbed27c 00000097 00000097 800031f0 00000006 00411e7c 00000001 00000000                                                                
>         00000000 00000000 00000000 1000d000 00000fa5 00000000 7fbed27c 00002301                                                                
>         000001a4 00000004 00000004 00000000 004548f0 4f4a414d 35323d52 00000000                                                                
>         ...                                                                                                                                    
> Call Trace:                                                                                                                                    
> [<800051e8>] __strncpy_from_user_nocheck_asm+0x8/0x50                                                                                          
> 
> 
> Code: 00000000  00001021  00a01821 <90680000> 24630001  11000005  a0880000  24420001  24840001 
> Instruction bus error, epc == 80031608, ra == 80000018                                         
> Oops[#6]:                                                                                      
> Cpu 0                                                                                          
> $ 0   : 00000000 1000d001 004469f0 803a91ae                                                    
> $ 4   : 0001b543 0000003c 81e65e7c 1000d001                                                    
> $ 8   : 000000b6 80357e3c 00080000 81c90000                                                    
> $12   : 81dc5868 288a0cf1 81c27930 00000000                                                    
> $16   : 00000000 00000000 00000fff 00000000                                                    
> $20   : 80390000 80340000 004469f0 80390000                                                    
> $24   : 00000000 80018994                                                                      
> $28   : 81e64000 81e65e60 80340000 80000018                                                    
> Hi    : 00000000                                                                               
> Lo    : 00000000                                                                               
> epc   : 80031608 do_syslog+0x1ac/0x4b0                                                         
>     Tainted: G      D                                                                          
> ra    : 80000018 0x80000018                                                                    
> Status: 1000d003    KERNEL EXL IE                                                              
> Cause : 00800018                                                                               
> PrId  : 00029029 (Broadcom BCM3302)                                                            
> Modules linked in: snd_usb_audio snd_pcm_oss snd_mixer_oss snd_pcm snd_timer evdev snd_page_alloc snd_usb_lib snd_rawmidi snd_seq_device snd_hwdep usbhid hid snd input_core soundcore nfs lockd auth_rpcgss sunrpc ipv6 arc4 ecb b43 mac80211 cfg80211                                       
> Process klogd (pid: 1033, threadinfo=81e64000, task=81dbe838, tls=00000000)                                                                    
> Stack : 000134b3 81dbe838 80049eb4 81e65e6c 00000000 81dbe838 80049eb4 81e65e7c                                                                
>         81e65e7c 00000006 81c95a80 fffffffb 004469f0 81e65f18 00440000 00400000                                                                
>         00440000 00400000 00400000 800dd900 80a03308 81e65f18 00000025 7fc376b4                                                                
>         00000000 00000fff 81e54640 80098e00 00000000 00440000 00440000 8000a3a0                                                                
>         00000000 00440000 00440000 81e54640 00000fff 004469f0 00440000 80098f98                                                                
>         ...                                                                                                                                    
> Call Trace:                                                                                                                                    
> [<80031608>] do_syslog+0x1ac/0x4b0                                                                                                             
> [<800dd900>] proc_reg_read+0x48/0x6c                                                                                                           
> [<80098e00>] vfs_read+0xb4/0x14c                                                                                                               
> [<80098f98>] sys_read+0x58/0x9c                                                                                                                
> [<800031f0>] stack_done+0x20/0x3c                                                                                                              
> 
> 
> Code: 000000c0  00008021  02d31021 <a0450000> 0c002a59  26730001  40016000  3421001f  3821001f 
> Instruction bus error, epc == 80004db8, ra == 80000018                                         
> Oops[#7]:                                                                                      
> Cpu 0                                                                                          
> $ 0   : 00000000 1000d000 81d74838 00000000                                                    
> $ 4   : 7f9cc240 80b47dd0 00000000 1000d001                                                    
> $ 8   : 00000000 00000000 00000000 81e28000                                                    
> $12   : 81dc5868 6ab13b80 81d74868 00000000                                                    
> $16   : 00000004 00000000 80b47dc0 80b47dc0                                                    
> $20   : 7f9cc240 00000000 0000000d 00000000                                                    
> $24   : 00000000 80271d18                                                                      
> $28   : 80b46000 80b47d98 7f9cc8b4 80000018                                                    
> Hi    : 00000000                                                                               
> Lo    : 00000000                                                                               
> epc   : 80004db8 __copy_user+0xd4/0x2bc                                                        
>     Tainted: G      D                                                                          
> ra    : 80000018 0x80000018                                                                    
> Status: 1000d003    KERNEL EXL IE                                                              
> Cause : 00800018                                                                               
> PrId  : 00029029 (Broadcom BCM3302)                                                            
> Modules linked in: snd_usb_audio snd_pcm_oss snd_mixer_oss snd_pcm snd_timer evdev snd_page_alloc snd_usb_lib snd_rawmidi snd_seq_device snd_hwdep usbhid hid snd input_core soundcore nfs lockd auth_rpcgss sunrpc ipv6 arc4 ecb b43 mac80211 cfg80211                                       
> Process nmbd (pid: 1073, threadinfo=80b46000, task=81d74838, tls=00000000)                                                                     
> Stack : 00000000 80b47da8 80b47f00 803b0000 80b47dc0 80b47dc4 80b47dc8 80b47dcc                                                                
>         80b47dd0 80b47dd4 00001fc0 00000000 00000000 00000000 00000000 00000000                                                                
>         00000000 80b47e20 803c0000 81c29900 81f04228 00000000 81eab398 81f5ca20                                                                
>         81f04390 00000000 8125c2ac 81f04228 00000001 800950b4 00006f6c ffffffff                                                                
>         00000000 803c0000 00000000 800d8e44 00000000 00000000 81f1eba0 800950a0                                                                
>         ...                                                                                                                                    
> Call Trace:                                                                                                                                    
> [<80004db8>] __copy_user+0xd4/0x2bc                                                                                                            
> 
> 
> Code: 8ca80000  24a50004  24c6fffc <ac880000> 1706fffb  24840004  10c00040  00864821  240a0020 
> Instruction bus error, epc == 80090c10, ra == 80000018                                         
> Oops[#8]:                                                                                      
> Cpu 0                                                                                          
> $ 0   : 00000000 1000d000 c019e002 00000002                                                    
> $ 4   : 00000001 803bd4e4 00000001 80b8c000                                                    
> $ 8   : 80387840 80357e3c 00080000 00000003                                                    
> $12   : 00000010 80387840 00000004 00000000                                                    
> $16   : 00000001 80b8cafc 2aebf000 0030cb2e                                                    
> $20   : 2aec0000 0090168b 00000000 00000000                                                    
> $24   : 00000000 80018994                                                                      
> $28   : 80b46000 80b47b40 00000000 80000018                                                    
> Hi    : 00000000                                                                               
> Lo    : 00000000                                                                               
> epc   : 80090c10 swap_info_get+0x74/0xfc                                                       
>     Tainted: G      D                                                                          
> ra    : 80000018 0x80000018                                                                    
> Status: 1000d003    KERNEL EXL IE                                                              
> Cause : 00800018                                                                               
> PrId  : 00029029 (Broadcom BCM3302)                                                            
> Modules linked in: snd_usb_audio snd_pcm_oss snd_mixer_oss snd_pcm snd_timer evdev snd_page_alloc snd_usb_lib snd_rawmidi snd_seq_device snd_hwdep usbhid hid snd input_core soundcore nfs lockd auth_rpcgss sunrpc ipv6 arc4 ecb b43 mac80211 cfg80211                                       
> Process nmbd (pid: 1073, threadinfo=80b46000, task=81d74838, tls=00000000)                                                                     
> Stack : 2ae7c000 017ff613 00000000 00000000 ffffffff 80093090 00000009 80036d3c                                                                
>         80357de0 00000000 00000000 00002000 80b8cafc 2aebf000 0030cb2e 80083480                                                                
>         80b47dc0 00000000 7f9cc240 00000000 2aebffff 8033db30 80b881e0 80b892ac                                                                
>         80b892ac 2aec0000 00000000 00000001 80b4443c 80b881e0 80387840 80b88214                                                                
>         81d74838 00000000 00000001 00000000 7f9cc8b4 80087c3c 80b47bf0 814c26e0                                                                
>         ...                                                                                                                                    
> Call Trace:                                                                                                                                    
> [<80090c10>] swap_info_get+0x74/0xfc                                                                                                           
> [<80093090>] free_swap_and_cache+0x20/0x220                                                                                                    
> [<80083480>] unmap_vmas+0x418/0x63c                                                                                                            
> [<80087c3c>] exit_mmap+0xb8/0x148                                                                                                              
> [<8002d5c0>] mmput+0xbc/0x1d4                                                                                                                  
> [<800325fc>] exit_mm+0x260/0x298                                                                                                               
> [<8003491c>] do_exit+0x1cc/0x6a0                                                                                                               
> [<80014034>] nmi_exception_handler+0x0/0x34                                                                                                    
> 
> 
> Code: 00041840  8ca20020  00431021 <94440000> 1480001d  8fbf0014  3c048030  3c05802b  24a57210 
> Fixing recursive fault but reboot is needed!                                                   
> Instruction bus error, epc == 800a8db0, ra == 80000018                                         
> Oops[#9]:                                                                                      
> Cpu 0                                                                                          
> $ 0   : 00000000 1000d000 00000000 00000000                                                    
> $ 4   : 00000000 8056fb80 00000002 8056fb80                                                    
> $ 8   : 00000000 0000d000 00000000 81c8e000                                                    
> $12   : 81c39830 802c1000 81d1a868 00000000                                                    
> $16   : 8056fb98 fffffffc 8056c0e0 fffffffc                                                    
> $20   : 8056fb98 00000000 00000000 8056fb70                                                    
> $24   : 00000000 802577b0                                                                      
> $28   : 8056e000 8056fb60 00458090 80000018                                                    
> Hi    : 00000121                                                                               
> Lo    : c4f5ed80                                                                               
> epc   : 800a8db0 do_sys_poll+0x2d0/0x388                                                       
>     Tainted: G      D                                                                          
> ra    : 80000018 0x80000018                                                                    
> Status: 1000d003    KERNEL EXL IE                                                              
> Cause : 00800018                                                                               
> PrId  : 00029029 (Broadcom BCM3302)                                                            
> Modules linked in: snd_usb_audio snd_pcm_oss snd_mixer_oss snd_pcm snd_timer evdev snd_page_alloc snd_usb_lib snd_rawmidi snd_seq_device snd_hwdep usbhid hid snd input_core soundcore nfs lockd auth_rpcgss sunrpc ipv6 arc4 ecb b43 mac80211 cfg80211                                       
> Process rpc.mountd (pid: 1148, threadinfo=8056e000, task=81d1a838, tls=00000000)                                                               
> Stack : 8033d9d0 8009540c 00000001 00000001 00000000 8033dc28 81d21838 80028fc4                                                                
>         00000000 00000002 00000004 000000c3 00000005 000000c3 00000001 81d21838                                                                
>         8053b214 8003f5bc 81d21838 0000b5e8 803b0000 8056fc00 803af690 10005000                                                                
>         81d21838 0000b65c 803b0000 8056fc18 803af690 803b0000 8033d9d0 8004e5bc                                                                
>         05f5e100 000004c8 05f5e100 8004e61c 8056fc40 8033fa50 05f5e100 000004cd                                                                
>         ...                                                                                                                                    
> Call Trace:                                                                                                                                    
> [<800a8db0>] do_sys_poll+0x2d0/0x388                                                                                                           
> [<800a9198>] sys_poll+0x8c/0xfc                                                                                                                
> [<800031f0>] stack_done+0x20/0x3c                                                                                                              
> 
> 
> Code: 0802a375  00004021  94a2000e <a7c20006> 1460000d  24a50008  24840001  27de0008  0086102a 
> Instruction bus error, epc == 80011004, ra == 80000018                                         
> Oops[#10]:                                                                                     
> Cpu 0                                                                                          
> $ 0   : 00000000 1000d001 24020000 80000000                                                    
> $ 4   : 7fd8cd68 24021017 0000000e 81d0ebe4                                                    
> $ 8   : 80012074 81ecde80 ffffffff ffffffff                                                    
> $12   : 00000000 671db480 81dc5868 00000000
> $16   : 00000000 00000000 81ecdf30 7fd8cd70
> $20   : 7fd8cd68 81d0ebe4 81ecde80 0000000e
> $24   : 00000000 80296e00
> $28   : 81ecc000 81ecde10 7fd8d024 80000018
> Hi    : 00000000
> Lo    : 00000000
> epc   : 80011004 install_sigtramp+0x20/0x54
>     Tainted: G      D
> ra    : 80000018 0x80000018
> Status: 1000d003    KERNEL EXL IE
> Cause : 00800018
> PrId  : 00029029 (Broadcom BCM3302)
> Modules linked in: snd_usb_audio snd_pcm_oss snd_mixer_oss snd_pcm snd_timer evdev snd_page_alloc snd_usb_lib snd_rawmidi snd_seq_device snd_hwdep usbhid hid snd input_core soundcore nfs lockd auth_rpcgss sunrpc ipv6 arc4 ecb b43 mac80211 cfg80211
> Process syslogd (pid: 1027, threadinfo=81ecc000, task=81d0e838, tls=00000000)
> Stack : 81ecdf30 81ecde98 81e88bc0 81d14004 00000009 81ecdf30 7fd8cd58 8001211c
>         81fb7820 00000000 00000038 00000002 81ecdf30 81ecdf30 0000000e 81ecde80
>         81d0ebe4 81ecde98 2ac8f490 00448414 00402130 80011190 00000000 81ecde80
>         81ecdf30 800f07d0 81ecde7c 0044f090 10000000 00403fd0 00002000 00000000
>         00000000 00000000 0000000e 00000080 00000000 00000000 00000000 00000000
>         ...
> Call Trace:
> [<80011004>] install_sigtramp+0x20/0x54
> [<8001211c>] setup_frame+0xa8/0x13c
> [<80011190>] do_notify_resume+0x158/0x428
> [<800015f0>] work_notifysig+0xc/0x14
> 
> 
> Code: afbf001c  00a22821  02008821 <ac850000> 2402000c  ac820004  3c038039  8c628038  0040f809
> Kernel panic - not syncing: Attempted to kill init!


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