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mfortini
 Post subject: AT91SAM9M10G45-EK ALSA BUG/Oops with aplay/arecord
PostPosted: Fri Dec 03, 2010 12:31 pm 
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Joined: Thu Dec 02, 2010 7:30 pm
Posts: 2
I'm setting up a board, I installed the demo linux4sam x11 image, but I can't get aplay/arecord to work properly.

For my specific application, I need to split the stereo output to two different mono pseudo device, I did it using dmix and route plugins.

However, all I can get is a kernel BUG/Oops which sometimes compromises the whole system.

When the bug comes out, I can't fix it even by removing /etc/asound.conf, short of reflashing the whole system.

NOTE: I have the dmesg, but I seem not to be allowed to upload any file. (tried no ext, .txt or .dat...)
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CptTitanic
 Post subject: Re: AT91SAM9M10G45-EK ALSA BUG/Oops with aplay/arecord
PostPosted: Fri Dec 03, 2010 4:46 pm 
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Joined: Sat Oct 30, 2010 6:04 pm
Posts: 574
Try pasting the salient portions into the body of the message.
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mfortini
 Post subject: Re: AT91SAM9M10G45-EK ALSA BUG/Oops with aplay/arecord
PostPosted: Fri Dec 03, 2010 4:53 pm 
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Joined: Thu Dec 02, 2010 7:30 pm
Posts: 2
c97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
atmel_ac97c atmel_ac97c.0: channel A event TXEMPTY TXRDY
BUG: Bad page map in process arecord pte:afa4f38f pmd:7317c031
addr:402ec000 vm_flags:000800ff anon_vma:(null) mapping:c3b225f8 index:0
vma->vm_ops->fault: snd_pcm_mmap_data_fault+0x0/0xc8
vma->vm_file->f_op->mmap: snd_pcm_mmap+0x0/0x34
[<c002a2a4>] (unwind_backtrace+0x0/0xe0) from [<c006aa44>] (print_bad_pte+0x1a4/0x1dc)
[<c006aa44>] (print_bad_pte+0x1a4/0x1dc) from [<c006ab0c>] (vm_normal_page+0x90/0xc4)
[<c006ab0c>] (vm_normal_page+0x90/0xc4) from [<c006c580>] (unmap_vmas+0x220/0x5e4)
[<c006c580>] (unmap_vmas+0x220/0x5e4) from [<c006ee58>] (unmap_region+0x70/0xf0)
[<c006ee58>] (unmap_region+0x70/0xf0) from [<c006fa08>] (do_munmap+0x1ec/0x254)
[<c006fa08>] (do_munmap+0x1ec/0x254) from [<c0070aa8>] (sys_munmap+0x3c/0x54)
[<c0070aa8>] (sys_munmap+0x3c/0x54) from [<c0025d40>] (ret_fast_syscall+0x0/0x2c)
BUG: Bad page map in process arecord pte:afa5038f pmd:7317c031
addr:402ed000 vm_flags:000800ff anon_vma:(null) mapping:c3b225f8 index:1
vma->vm_ops->fault: snd_pcm_mmap_data_fault+0x0/0xc8
vma->vm_file->f_op->mmap: snd_pcm_mmap+0x0/0x34
[<c002a2a4>] (unwind_backtrace+0x0/0xe0) from [<c006aa44>] (print_bad_pte+0x1a4/0x1dc)
[<c006aa44>] (print_bad_pte+0x1a4/0x1dc) from [<c006ab0c>] (vm_normal_page+0x90/0xc4)
[<c006ab0c>] (vm_normal_page+0x90/0xc4) from [<c006c580>] (unmap_vmas+0x220/0x5e4)
[<c006c580>] (unmap_vmas+0x220/0x5e4) from [<c006ee58>] (unmap_region+0x70/0xf0)
[<c006ee58>] (unmap_region+0x70/0xf0) from [<c006fa08>] (do_munmap+0x1ec/0x254)
[<c006fa08>] (do_munmap+0x1ec/0x254) from [<c0070aa8>] (sys_munmap+0x3c/0x54)
[<c0070aa8>] (sys_munmap+0x3c/0x54) from [<c0025d40>] (ret_fast_syscall+0x0/0x2c)
BUG: Bad page map in process arecord pte:afa5138f pmd:7317c031
addr:402ee000 vm_flags:000800ff anon_vma:(null) mapping:c3b225f8 index:2
vma->vm_ops->fault: snd_pcm_mmap_data_fault+0x0/0xc8
vma->vm_file->f_op->mmap: snd_pcm_mmap+0x0/0x34
[<c002a2a4>] (unwind_backtrace+0x0/0xe0) from [<c006aa44>] (print_bad_pte+0x1a4/0x1dc)
[<c006aa44>] (print_bad_pte+0x1a4/0x1dc) from [<c006ab0c>] (vm_normal_page+0x90/0xc4)
[<c006ab0c>] (vm_normal_page+0x90/0xc4) from [<c006c580>] (unmap_vmas+0x220/0x5e4)
[<c006c580>] (unmap_vmas+0x220/0x5e4) from [<c006ee58>] (unmap_region+0x70/0xf0)
[<c006ee58>] (unmap_region+0x70/0xf0) from [<c006fa08>] (do_munmap+0x1ec/0x254)
[<c006fa08>] (do_munmap+0x1ec/0x254) from [<c0070aa8>] (sys_munmap+0x3c/0x54)
[<c0070aa8>] (sys_munmap+0x3c/0x54) from [<c0025d40>] (ret_fast_syscall+0x0/0x2c)
BUG: Bad page map in process arecord pte:afa5238f pmd:7317c031
addr:402ef000 vm_flags:000800ff anon_vma:(null) mapping:c3b225f8 index:3
vma->vm_ops->fault: snd_pcm_mmap_data_fault+0x0/0xc8
vma->vm_file->f_op->mmap: snd_pcm_mmap+0x0/0x34
[<c002a2a4>] (unwind_backtrace+0x0/0xe0) from [<c006aa44>] (print_bad_pte+0x1a4/0x1dc)
[<c006aa44>] (print_bad_pte+0x1a4/0x1dc) from [<c006ab0c>] (vm_normal_page+0x90/0xc4)
[<c006ab0c>] (vm_normal_page+0x90/0xc4) from [<c006c580>] (unmap_vmas+0x220/0x5e4)
[<c006c580>] (unmap_vmas+0x220/0x5e4) from [<c006ee58>] (unmap_region+0x70/0xf0)
[<c006ee58>] (unmap_region+0x70/0xf0) from [<c006fa08>] (do_munmap+0x1ec/0x254)
[<c006fa08>] (do_munmap+0x1ec/0x254) from [<c0070aa8>] (sys_munmap+0x3c/0x54)
[<c0070aa8>] (sys_munmap+0x3c/0x54) from [<c0025d40>] (ret_fast_syscall+0x0/0x2c)
BUG: Bad page map in process arecord pte:afa5338f pmd:7317c031
addr:402f0000 vm_flags:000800ff anon_vma:(null) mapping:c3b225f8 index:4
vma->vm_ops->fault: snd_pcm_mmap_data_fault+0x0/0xc8
vma->vm_file->f_op->mmap: snd_pcm_mmap+0x0/0x34
[<c002a2a4>] (unwind_backtrace+0x0/0xe0) from [<c006aa44>] (print_bad_pte+0x1a4/0x1dc)
[<c006aa44>] (print_bad_pte+0x1a4/0x1dc) from [<c006ab0c>] (vm_normal_page+0x90/0xc4)
[<c006ab0c>] (vm_normal_page+0x90/0xc4) from [<c006c580>] (unmap_vmas+0x220/0x5e4)
[<c006c580>] (unmap_vmas+0x220/0x5e4) from [<c006ee58>] (unmap_region+0x70/0xf0)
[<c006ee58>] (unmap_region+0x70/0xf0) from [<c006fa08>] (do_munmap+0x1ec/0x254)
[<c006fa08>] (do_munmap+0x1ec/0x254) from [<c0070aa8>] (sys_munmap+0x3c/0x54)
[<c0070aa8>] (sys_munmap+0x3c/0x54) from [<c0025d40>] (ret_fast_syscall+0x0/0x2c)
BUG: Bad page map in process arecord pte:afa5438f pmd:7317c031
addr:402f1000 vm_flags:000800ff anon_vma:(null) mapping:c3b225f8 index:5
vma->vm_ops->fault: snd_pcm_mmap_data_fault+0x0/0xc8
vma->vm_file->f_op->mmap: snd_pcm_mmap+0x0/0x34
[<c002a2a4>] (unwind_backtrace+0x0/0xe0) from [<c006aa44>] (print_bad_pte+0x1a4/0x1dc)
[<c006aa44>] (print_bad_pte+0x1a4/0x1dc) from [<c006ab0c>] (vm_normal_page+0x90/0xc4)
[<c006ab0c>] (vm_normal_page+0x90/0xc4) from [<c006c580>] (unmap_vmas+0x220/0x5e4)
[<c006c580>] (unmap_vmas+0x220/0x5e4) from [<c006ee58>] (unmap_region+0x70/0xf0)
[<c006ee58>] (unmap_region+0x70/0xf0) from [<c006fa08>] (do_munmap+0x1ec/0x254)
[<c006fa08>] (do_munmap+0x1ec/0x254) from [<c0070aa8>] (sys_munmap+0x3c/0x54)
[<c0070aa8>] (sys_munmap+0x3c/0x54) from [<c0025d40>] (ret_fast_syscall+0x0/0x2c)
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
atmel_ac97c atmel_ac97c.0: channel A event OVRUN RXRDY
BUG: Bad page map in process aplay pte:afa473cf pmd:73b6d031
addr:402ec000 vm_flags:000800ff anon_vma:(null) mapping:c3b22780 index:0
vma->vm_ops->fault: snd_pcm_mmap_data_fault+0x0/0xc8
vma->vm_file->f_op->mmap: snd_pcm_mmap+0x0/0x34
[<c002a2a4>] (unwind_backtrace+0x0/0xe0) from [<c006aa44>] (print_bad_pte+0x1a4/0x1dc)
[<c006aa44>] (print_bad_pte+0x1a4/0x1dc) from [<c006ab0c>] (vm_normal_page+0x90/0xc4)
[<c006ab0c>] (vm_normal_page+0x90/0xc4) from [<c006c580>] (unmap_vmas+0x220/0x5e4)
[<c006c580>] (unmap_vmas+0x220/0x5e4) from [<c006ee58>] (unmap_region+0x70/0xf0)
[<c006ee58>] (unmap_region+0x70/0xf0) from [<c006fa08>] (do_munmap+0x1ec/0x254)
[<c006fa08>] (do_munmap+0x1ec/0x254) from [<c0070aa8>] (sys_munmap+0x3c/0x54)
[<c0070aa8>] (sys_munmap+0x3c/0x54) from [<c0025d40>] (ret_fast_syscall+0x0/0x2c)
BUG: Bad page map in process aplay pte:afa483cf pmd:73b6d031
addr:402ed000 vm_flags:000800ff anon_vma:(null) mapping:c3b22780 index:1
vma->vm_ops->fault: snd_pcm_mmap_data_fault+0x0/0xc8
vma->vm_file->f_op->mmap: snd_pcm_mmap+0x0/0x34
[<c002a2a4>] (unwind_backtrace+0x0/0xe0) from [<c006aa44>] (print_bad_pte+0x1a4/0x1dc)
[<c006aa44>] (print_bad_pte+0x1a4/0x1dc) from [<c006ab0c>] (vm_normal_page+0x90/0xc4)
[<c006ab0c>] (vm_normal_page+0x90/0xc4) from [<c006c580>] (unmap_vmas+0x220/0x5e4)
[<c006c580>] (unmap_vmas+0x220/0x5e4) from [<c006ee58>] (unmap_region+0x70/0xf0)
[<c006ee58>] (unmap_region+0x70/0xf0) from [<c006fa08>] (do_munmap+0x1ec/0x254)
[<c006fa08>] (do_munmap+0x1ec/0x254) from [<c0070aa8>] (sys_munmap+0x3c/0x54)
[<c0070aa8>] (sys_munmap+0x3c/0x54) from [<c0025d40>] (ret_fast_syscall+0x0/0x2c)
BUG: Bad page map in process aplay pte:afa493cf pmd:73b6d031
addr:402ee000 vm_flags:000800ff anon_vma:(null) mapping:c3b22780 index:2
vma->vm_ops->fault: snd_pcm_mmap_data_fault+0x0/0xc8
vma->vm_file->f_op->mmap: snd_pcm_mmap+0x0/0x34
[<c002a2a4>] (unwind_backtrace+0x0/0xe0) from [<c006aa44>] (print_bad_pte+0x1a4/0x1dc)
[<c006aa44>] (print_bad_pte+0x1a4/0x1dc) from [<c006ab0c>] (vm_normal_page+0x90/0xc4)
[<c006ab0c>] (vm_normal_page+0x90/0xc4) from [<c006c580>] (unmap_vmas+0x220/0x5e4)
[<c006c580>] (unmap_vmas+0x220/0x5e4) from [<c006ee58>] (unmap_region+0x70/0xf0)
[<c006ee58>] (unmap_region+0x70/0xf0) from [<c006fa08>] (do_munmap+0x1ec/0x254)
[<c006fa08>] (do_munmap+0x1ec/0x254) from [<c0070aa8>] (sys_munmap+0x3c/0x54)
[<c0070aa8>] (sys_munmap+0x3c/0x54) from [<c0025d40>] (ret_fast_syscall+0x0/0x2c)
BUG: Bad page map in process aplay pte:afa4a3cf pmd:73b6d031
addr:402ef000 vm_flags:000800ff anon_vma:(null) mapping:c3b22780 index:3
vma->vm_ops->fault: snd_pcm_mmap_data_fault+0x0/0xc8
vma->vm_file->f_op->mmap: snd_pcm_mmap+0x0/0x34
[<c002a2a4>] (unwind_backtrace+0x0/0xe0) from [<c006aa44>] (print_bad_pte+0x1a4/0x1dc)
[<c006aa44>] (print_bad_pte+0x1a4/0x1dc) from [<c006ab0c>] (vm_normal_page+0x90/0xc4)
[<c006ab0c>] (vm_normal_page+0x90/0xc4) from [<c006c580>] (unmap_vmas+0x220/0x5e4)
[<c006c580>] (unmap_vmas+0x220/0x5e4) from [<c006ee58>] (unmap_region+0x70/0xf0)
[<c006ee58>] (unmap_region+0x70/0xf0) from [<c006fa08>] (do_munmap+0x1ec/0x254)
[<c006fa08>] (do_munmap+0x1ec/0x254) from [<c0070aa8>] (sys_munmap+0x3c/0x54)
[<c0070aa8>] (sys_munmap+0x3c/0x54) from [<c0025d40>] (ret_fast_syscall+0x0/0x2c)
BUG: Bad page map in process aplay pte:afa4b3cf pmd:73b6d031
addr:402f0000 vm_flags:000800ff anon_vma:(null) mapping:c3b22780 index:4
vma->vm_ops->fault: snd_pcm_mmap_data_fault+0x0/0xc8
vma->vm_file->f_op->mmap: snd_pcm_mmap+0x0/0x34
[<c002a2a4>] (unwind_backtrace+0x0/0xe0) from [<c006aa44>] (print_bad_pte+0x1a4/0x1dc)
[<c006aa44>] (print_bad_pte+0x1a4/0x1dc) from [<c006ab0c>] (vm_normal_page+0x90/0xc4)
[<c006ab0c>] (vm_normal_page+0x90/0xc4) from [<c006c580>] (unmap_vmas+0x220/0x5e4)
[<c006c580>] (unmap_vmas+0x220/0x5e4) from [<c006ee58>] (unmap_region+0x70/0xf0)
[<c006ee58>] (unmap_region+0x70/0xf0) from [<c006fa08>] (do_munmap+0x1ec/0x254)
[<c006fa08>] (do_munmap+0x1ec/0x254) from [<c0070aa8>] (sys_munmap+0x3c/0x54)
[<c0070aa8>] (sys_munmap+0x3c/0x54) from [<c0025d40>] (ret_fast_syscall+0x0/0x2c)
BUG: Bad page map in process aplay pte:afa4c3cf pmd:73b6d031
addr:402f1000 vm_flags:000800ff anon_vma:(null) mapping:c3b22780 index:5
vma->vm_ops->fault: snd_pcm_mmap_data_fault+0x0/0xc8
vma->vm_file->f_op->mmap: snd_pcm_mmap+0x0/0x34
[<c002a2a4>] (unwind_backtrace+0x0/0xe0) from [<c006aa44>] (print_bad_pte+0x1a4/0x1dc)
[<c006aa44>] (print_bad_pte+0x1a4/0x1dc) from [<c006ab0c>] (vm_normal_page+0x90/0xc4)
[<c006ab0c>] (vm_normal_page+0x90/0xc4) from [<c006c580>] (unmap_vmas+0x220/0x5e4)
[<c006c580>] (unmap_vmas+0x220/0x5e4) from [<c006ee58>] (unmap_region+0x70/0xf0)
[<c006ee58>] (unmap_region+0x70/0xf0) from [<c006fa08>] (do_munmap+0x1ec/0x254)
[<c006fa08>] (do_munmap+0x1ec/0x254) from [<c0070aa8>] (sys_munmap+0x3c/0x54)
[<c0070aa8>] (sys_munmap+0x3c/0x54) from [<c0025d40>] (ret_fast_syscall+0x0/0x2c)
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