Re: Bug report: slab error at module removal

["Lamont R. Peterson" <lamont@gurulabs.com>]

[-- Attachment #1: Type: text/plain, Size: 1915 bytes --]

On Fri, 2004-08-13 at 22:26, Mathieu Segaud wrote:
> I don't know if this is the right place, but I just saw a kernel message
> in my dmesg.  
[SNIP]
> After several hours of running some moderatly high load stuff 
> on each of them (big transfert of data, long repacker runs...).
> I decided to umount them and unload reiser4.ko module.
> dmesg gave this message:

I thought that building reiser4 as a module was still not ready.  Is
that true?

Is it safe to build and load as a module but does not remove cleanly
yet?  Is that the reason reiser4 as a kernel module was not ready?

> slab error in kmem_cache_destroy(): cache `plugin_set': Can't free all objects
>  [<c0135c41>] kmem_cache_destroy+0xd1/0x130
>  [<f99bf57a>] plugin_set_done+0xa/0x30 [reiser4]
>  [<f99b9194>] shutdown_reiser4+0xf4/0x210 [reiser4]
>  [<c012a004>] sys_delete_module+0x144/0x180
>  [<c013ea9e>] unmap_vma_list+0xe/0x20
>  [<c013edcf>] do_munmap+0xef/0x150
>  [<c0103afd>] sysenter_past_esp+0x52/0x71
> SLAB: cache with size 64 has lost its name
> SLAB: cache with size 64 has lost its name
> SLAB: cache with size 64 has lost its name
> SLAB: cache with size 64 has lost its name
> SLAB: cache with size 64 has lost its name
> SLAB: cache with size 64 has lost its name
> SLAB: cache with size 64 has lost its name
> SLAB: cache with size 64 has lost its name
> SLAB: cache with size 64 has lost its name
> SLAB: cache with size 64 has lost its name
> SLAB: cache with size 64 has lost its name
> 
> The FSes are still consistent (fsck'ed with no --fix needed).
> Unfortunatly, I turned off debugging options to test latest snapshot
> performance. I can rebuild the module with debugging options on,
> and try to give you a more accurate report to help find the memory leak.
> 
> Regards,
-- 
Lamont R. Peterson <lamont@gurulabs.com>
Senior Instructor
Guru Labs http://www.gurulabs.com/

[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 189 bytes --]