Re: reiserfs bug

[Vladimir Saveliev]

Hello

On Thu, 2004-07-01 at 10:09, Hongwei Li wrote:
> Hi:
> My machine am running linux-2.4.25, it crash in the
> reiser_panic.
> I looked at the oops and find out the followings:
> check_leaf_block_head pass the 0 as "sb" value, and
> cause reiser_panic crash.
> Any fix for this?
> 

Reiserfs found metadata corruption. It is supposed to not crash but
return i/o error, 

but you should reiserfsck your filesystem.

We have to improve reiserfs data corruption handling.

> static void check_leaf_block_head (struct buffer_head
> * bh)
> {
>   struct block_head * blkh;
>   int nr;
> 
>   blkh = B_BLK_HEAD (bh);
>   nr = blkh_nr_item(blkh);
>   if ( nr > (bh->b_size - BLKH_SIZE) / IH_SIZE)
>     reiserfs_panic (0, "vs-6010:
> check_leaf_block_head: invalid item number %z", bh);
>   if ( blkh_free_space(blkh) > 
>       bh->b_size - BLKH_SIZE - IH_SIZE * nr )
>     reiserfs_panic (0, "vs-6020:
> check_leaf_block_head: invalid free space %z", bh);
>     
> }
> 
> void reiserfs_panic (struct super_block * sb, const
> char * fmt, ...)
> {
>   show_reiserfs_locks() ;
>   do_reiserfs_warning(fmt);
>   printk ( KERN_EMERG "%s (device %s)\n", error_buf,
> bdevname(sb->s_dev));
>   BUG ();
> 
>   /* this is not actually called, but makes
> reiserfs_panic() "noreturn" */
>   panic ("REISERFS: panic (device %s): %s\n",
> 	 sb ? kdevname(sb->s_dev) : "sb == 0", error_buf);
> }
> 
> Li Hongwei
> 
> 
> 	
> 		
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