[Ocfs2-devel] buffer not mapped?

[Wim Coekaerts]

intresting, why is the nm thread still going on afer unload module ?

how long after the umount do you do this ?

On Sun, May 09, 2004 at 04:13:27PM +0800, Ling, Xiaofeng wrote:
> This is what I found on svn 907
> 
> 2.4.20-UP kernel
> Steps:
> 1.format
> 2.mount
> 3.read/write
> 4.umount
> 5.unload module
> system show as follows, some times it may delay some seconds and 
> it shows in kupdated.
> --------------------------------
>  BUG at ll_rw_blk.c:937!
> invalid operand: 0000
> CPU:    0
> EIP:    0010:[<c01c369e>]    Not tainted
> EFLAGS: 00010246
> eax: 00000800   ebx: 00000000   ecx: d0098a80   edx: 00000001
> esi: 00000001   edi: 003e823f   ebp: c037dbc4   esp: cc001df4
> ds: 0018   es: 0018   ss: 0018
> Process ocfs2nm-0 (pid: 3273, stackpage=cc001000)
> Stack: cc000000 5d700000 000007f9 e0882e2d d4d765e0 de6f51a0 c01120dc
> e0882e2d
>        d4d76e20 00000800 c037dbec cc000000 00000000 00000001 0000002a
> 00000000
>        d0098a80 00000001 003e823f 0000002a c01c3caa c037dbc4 00000000
> d0098a80
> Call Trace:    [<e0882e2d>] [<c01120dc>] [<e0882e2d>] [<c01c3caa>]
> [<c01c3d59>]
>   [<e0891e44>] [<e0882904>] [<e08a86e9>] [<c012320b>] [<c011432b>]
> [<c01182ba>]
>   [<c01073d2>] [<c010578e>] [<e08a81d8>]
> 
> Code: 0f 0b a9 03 99 7c 2c c0 8b 44 24 5c 0f b7 48 14 c7 44 24 20
>  .SH
> 
> ll_rw_blk.c:937 is in function __make_request()
> as:
> if (!buffer_mapped(bh))
>    BUG();
> 
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