Bug#596297: unrar crashed with kernel error message
tags 596297 = unreproducible
quit
Hi again,
Jonathan Nieder wrote:
> Stefan Arnold wrote:
>> As I told the kernel gave me a error message during unpacking an archive.
>> The unrar process did not die and i could not even kill it with -9.
>
> Oh, dear. Sorry for the slow response.
>
>> BUG: unable to handle kernel NULL pointer dereference at 00000800
>> IP: [<c10cd8e7>] unmap_underlying_metadata+0x1f/0x3a
>> *pde = 00000000
>> Oops: 0002 [#1] SMP
>
> Was this reproducible? Is it still?
>
> [...]
> > Pid: 5036, comm: unrar Tainted: P (2.6.32-5-686 #1) To Be Filled By O.E.M.
> [...]
>> [<c10ce286>] ? __block_prepare_write+0x163/0x297
>> [<c10ce50d>] ? block_write_begin+0x70/0xc6
>> [<f805fe2b>] ? ext3_get_block+0x0/0xd1 [ext3]
>> [<f80610f3>] ? ext3_write_begin+0xe6/0x1d2 [ext3]
[...]
>> Code: 75 08 89 d8 5b e9 cc ff ff ff 5b c3 57 89 c7 56 89 ce 53 89 d3 e8 5c df 19 00 89 da 89 f1 89 f8 e8 54 f1 ff ff 85 c0 89 c3 74 17 <3e> 80 20 fd e8 ba ff ff ff 3e 80 23 f7 89 d8 5b 5e 5f e9 ef f3
As a quick guess, this looks like the bug fixed by the patch [1] which
doesn't seem to have been applied. Maybe there was some other fix.
(Or maybe it is memory corruption. Haven't tried matching the
disassembly to the corresponding code.)
[1] http://thread.gmane.org/gmane.linux.file-systems/33136/focus=33141
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