Re: sparse segfault in kernel -mm tree

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On Tue, 06 Mar 2007 13:19:37 -0500 Pavel Roskin wrote:

> On Mon, 2007-03-05 at 22:40 -0800, Randy Dunlap wrote:
> > On Tue,  6 Mar 2007 00:42:43 -0500 Pavel Roskin wrote:
> > > There is a relatively easy way to get the problematic file.  Remove the
> > > corresponding object file and run this in the Linux build tree:
> > > 
> > > make CC="gcc -save-temps -D__CHECKER__"
> > > 
> > > This will likely fail, but there will be a file with *.i extension that would
> > > probably cause the same problem with sparse.  That file can be renamed back to
> > > *.c, indented and, time permitting, reduced to a few lines.
> > 
> > Sorry, that's not giving me anything from drivers/net/vioc/.
> > It dies on init/main.c:
> > 
> > init/main.c: At top level:
> > init/main.c:431: warning: 'context' attribute directive ignored
> > init/main.c:431: error: expected ',' or ';' before '{' token
> 
> My bad, sorry.  I tested in on a standalone driver.  Here's a version
> tested on the actual kernel tree:
> 
> make CC="gcc -save-temps -D__CHECKER__" KBUILD_NOCMDDEP=1
> 
> KBUILD_NOCMDDEP=1 prevents rebuilding other files when CC changes.  If
> you still get stuck on another file, please also add "-k" to the command
> line.

OK, that produced a large .i file and running:
  sparse vioc_provision.i
does reproduce the segfault, so now I am cutting down the size of
the .i file, then I'll send it in.

Thanks.
---
~Randy
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