Re: kern/47739: tmpfs panic: kernel diagnostic assertion "(node)->tn_spec.tn_dir.tn_readdir_lastp == NULL..."

[David Holland <dholland-bugs%netbsd.org@localhost>]

On Thu, Aug 08, 2013 at 08:30:01PM +0000, Mindaugas Rasiukevicius wrote:
 >  >  Can someone please take a look?

almost certainly the same as 47480 (and 41068)

 >  >   Thomas
 >  
 >  Most likely this is due to tmpfs_dircookie() truncation here:
 >  
 >  http://nxr.netbsd.org/source/xref/src/sys/fs/tmpfs/tmpfs.h#88
 >  
 >  It is wrong and there are other PRs because of it.  Thomas, you can test
 >  this by replacing the function body with the following:
 >  
 >      return (off_t)(uintptr_t)de;
 >  
 >  This breaks linux32 compat, but we really just need to decide how we want
 >  to fix it (it would be good to avoid penalising the native code, but better
 >  to penalise than fail).

Four and a half years ago (in PR 41068) I asked why tmpfs does this
nonsense instead of just assigning sequence numbers to each node.
Nobody has ever managed to come up with a coherent justification, just
FUD.

-- 
David A. Holland
dholland%netbsd.org@localhost