Re: making reiser4/AMD64 hardlock

[Alex Zarochentsev <zam@namesys.com>]

Hi

On Tue, Dec 07, 2004 at 03:46:58PM -0600, Jake Maciejewski wrote:
> With this patch get
> 
> reiser4[cc1(10284)]: check_blocks_bitmap
> (fs/reiser4/plugin/space/bitmap.c:1174)[zam-623]:
> code: -2 at fs/reiser4/search.c:1285
> reiser4 panicked cowardly: assertion failed: reiser4_find_next_zero_bit(bnode_working_data(bnode), end_offset, start_offset) >= end_offset

did you begin the tests with mkfs.reiser4 /dev/.... ?

> 
> details at
> http://people.msoe.edu/~maciejej/patches/AMD64_reiser4_debug/12-07-04/zam-patch/
> 
> which is pretty much the same thing documented in 11-20-04/sync_mount/ ,
> 11-10-04/with_bitmap.c.diff/ , 11-09-04/ , 11-08-04/test2/ ,
> 11-04-04/all-R4/ , and 11-04-04/R3-R4/
> 
> 
> When I also used Vladimir's "10 Nov 2004 19:08:47 +0300" bitmap.c.diff,
> my logs filled (~1.7 million lines) with 
> 
> WARNING: Wrong level found in node: 1 != 0
> reiser4[cc1(11554)]: parse_node40
> (fs/reiser4/plugin/node/node40.c:767)[nikita-494]:
> code: -2 at fs/reiser4/search.c:1312
> 
> see 12-07-04/both-patches/
> 
> The only other time I've seen an error like this was 11-08-04/test1/
> repeating
> 
> WARNING: Failed to delete file body 84672
> reiser4[make(22140)]: parse_node40
> (fs/reiser4/plugin/node/node40.c:767)[nikita-494]:
> code: -2 at fs/reiser4/search.c:1278
> 
> 
> If you want, I'll run it again and probably hit the
> reiser4_find_next_zero_bit error instead. I didn't bother with
> fsck.reiser4 --build-fs and --check because now that I think about it,
> this isn't the sort of thing fsck needs to be able to fix. If fsck
> should be able to handle these cases, someone speak up and I'll provide
> more reports like 11-20-04/sync_mount/corruption/.
> 
> On Tue, 2004-12-07 at 15:20 +0300, Alex Zarochentsev wrote:
> > On Wed, Nov 10, 2004 at 01:45:40PM -0600, Jake Maciejewski wrote:
> > > Does this show what you want?
> > > http://people.msoe.edu/~maciejej/patches/AMD64_reiser4_debug/11-10-04/with_bitmap.c.diff/
> > 
> > Please apply the patch below. it definitely fixes one reiser4/amd64 bug. 
> > 
> > 
> > ===== plugin/space/bitmap.c 1.183 vs edited =====
> > --- 1.183/plugin/space/bitmap.c	Wed Oct 13 17:22:01 2004
> > +++ edited/plugin/space/bitmap.c	Sun Dec  5 00:18:55 2004
> > @@ -170,7 +170,7 @@
> >  static int
> >  find_next_zero_bit_in_word(ulong_t word, int start_bit)
> >  {
> > -	unsigned int mask = 1 << start_bit;
> > +	ulong_t mask = 1 << start_bit;
> >  	int i = start_bit;
> >  
> >  	while ((word & mask) != 0) {
> > @@ -234,7 +234,7 @@
> >  /* search for the first set bit in single word. */
> >  static int find_last_set_bit_in_word (ulong_t word, int start_bit)
> >  {
> > -	unsigned bit_mask;
> > +	ulong_t bit_mask;
> >  	int nr = start_bit;
> >  
> >  	assert ("zam-965", start_bit < BITS_PER_LONG);
> -- 
> Jake Maciejewski <maciejej@msoe.edu>
> 

-- 
Alex.