[mythtv-users] Crash during playback (EPIA) / LiveTV

[Klaasjan Tukker]

Hello,

I am trying to playback a recorded stream; At the start of the playback, the frontend crashes with a kernel-oops. I hope someone can give me a pointer on where to start looking / fixing.

Hardware EPIA M10K - Hardware MPEG decoding used

Output of ksymoops:

Unable to handle kernel NULL pointer dereference at virtual address 00000000
dea40cf2
*pde = 00000000
Oops: 0000
CPU:    0
EIP:    0010:[<dea40cf2>]    Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00013246
eax: 00000000   ebx: caca1990   ecx: 00000000   edx: 00000000
esi: dea5b00c   edi: 004dab80   ebp: 00000007   esp: caca1940
ds: 0018   es: 0018   ss: 0018
Process mythfrontend (pid: 13430, stackpage=caca1000)
Stack: 00000000 00000000 00000000 caca1990 dea5b00c 0a0a2c00 00000007 dea4140a 
       caca196c 00000000 00000018 004dab80 00000000 00000000 00000000 00000000 
       00000000 00000000 00000000 00000000 004dab80 00000000 00004567 00000000 
Call Trace:    [<dea5b00c>] [<dea4140a>] [<dea45beb>] [<dea5b00c>] [<de971478>]
  [<dea4c6cc>] [<dea3dc83>] [<de97c540>] [<de96f079>] [<de979ca0>] [<de98b8ce>]
  [<de978f37>] [<de96f4a9>] [<de96f5ae>] [<de979520>] [<c013d999>] [<c013dc30>]
  [<c019d344>] [<c019da43>] [<c01a2aed>] [<c013d999>] [<c0142aba>] [<c016d80d>]
  [<c016e03b>] [<c0150044>] [<c0150cff>] [<c01350cb>] [<c012a4bf>] [<c0129951>]
  [<c0277d92>] [<c012ab66>] [<c012afca>] [<c010cb09>] [<dea3a425>] [<dea5ab40>]
  [<c014a169>] [<c0107403>]
Code: 8b 18 0f 85 90 01 00 00 85 db 89 da 0f 84 62 01 00 00 8d b6 


>>EIP; dea40cf2 <[via_v4l_drv]viaAllocSurface+22/1f0>   <=====

>>ebx; caca1990 <_end+a94daf0/1e5b31c0>
>>esi; dea5b00c <[via_v4l_drv]MPEGMemRequest+0/18>
>>esp; caca1940 <_end+a94daa0/1e5b31c0>

Trace; dea5b00c <[via_v4l_drv]MPEGMemRequest+0/18>
Trace; dea4140a <[via_v4l_drv]viaMgr_vid_ioctl+15a/250>
Trace; dea45beb <[via_v4l_drv]CreateSurface+206b/2a10>
Trace; dea5b00c <[via_v4l_drv]MPEGMemRequest+0/18>
Trace; de971478 <[snd-pcm]snd_pcm_hw_rule_format+108/130>
Trace; dea4c6cc <[via_v4l_drv]VIADriverProc+7c/130>
Trace; dea3dc83 <[via_v4l_drv]km_ioctl+4a3/1e40>
Trace; de97c540 <[snd-pcm]rates+0/34>
Trace; de96f079 <[snd-pcm]snd_pcm_hw_refine+379/500>
Trace; de979ca0 <[snd-pcm]snd_pcm_lib_malloc_pages+50/e0>
Trace; de98b8ce <[snd-via82xx]snd_via82xx_hw_params+9e/c0>
Trace; de978f37 <[snd-pcm]snd_pcm_timer_resolution_change+47/a0>
Trace; de96f4a9 <[snd-pcm]snd_pcm_hw_params+209/2a0>
Trace; de96f5ae <[snd-pcm]snd_pcm_hw_params_user+6e/a0>
Trace; de979520 <[snd-pcm]snd_pcm_format_set_silence+90/1f0>
Trace; c013d999 <getblk+59/70>
Trace; c013dc30 <bread+20/90>
Trace; c019d344 <is_tree_node+74/80>
Trace; c019da43 <search_by_key+6f3/ee0>
Trace; c01a2aed <get_cnode+7d/90>
Trace; c013d999 <getblk+59/70>
Trace; c0142aba <cdget+9a/e0>
Trace; c016d80d <_devfs_get_vfs_inode+1ed/230>
Trace; c016e03b <devfs_lookup+12b/1f0>
Trace; c0150044 <alloc_inode+c4/150>
Trace; c0150cff <new_inode+f/50>
Trace; c01350cb <__alloc_pages+6b/270>
Trace; c012a4bf <pte_alloc+8f/c0>
Trace; c0129951 <remap_page_range+c1/200>
Trace; c0277d92 <rb_insert_color+d2/f0>
Trace; c012ab66 <__vma_link+56/c0>
Trace; c012afca <do_mmap_pgoff+30a/570>
Trace; c010cb09 <old_mmap+f9/110>
Trace; dea3a425 <[videodev]video_ioctl+25/40>
Trace; dea5ab40 <[via_v4l_drv]via_v4l_devices+640/960>
Trace; c014a169 <sys_ioctl+c9/250>
Trace; c0107403 <system_call+33/40>

Code;  dea40cf2 <[via_v4l_drv]viaAllocSurface+22/1f0>
00000000 <_EIP>:
Code;  dea40cf2 <[via_v4l_drv]viaAllocSurface+22/1f0>   <=====
   0:   8b 18                     mov    (%eax),%ebx   <=====
Code;  dea40cf4 <[via_v4l_drv]viaAllocSurface+24/1f0>
   2:   0f 85 90 01 00 00         jne    198 <_EIP+0x198>
Code;  dea40cfa <[via_v4l_drv]viaAllocSurface+2a/1f0>
   8:   85 db                     test   %ebx,%ebx
Code;  dea40cfc <[via_v4l_drv]viaAllocSurface+2c/1f0>
   a:   89 da                     mov    %ebx,%edx
Code;  dea40cfe <[via_v4l_drv]viaAllocSurface+2e/1f0>
   c:   0f 84 62 01 00 00         je     174 <_EIP+0x174>
Code;  dea40d04 <[via_v4l_drv]viaAllocSurface+34/1f0>
  12:   8d b6 00 00 00 00         lea    0x0(%esi),%esi


With kind regards,

Klaasjan Tukker
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