Re: [CHECKER] 37 stack variables >= 1K in 2.4.17

From: Alexander Viro (
Date: Wed Jun 12 2002 - 19:20:48 EST

On Wed, 12 Jun 2002, Benjamin LaHaise wrote:

> On Wed, Jun 12, 2002 at 06:26:55PM -0400, Alexander Viro wrote:
> > Not realistic - we have a recursion through the ->follow_link(), and
> > a lot of stuff can be called from ->follow_link(). We _do_ have a
> > limit on depth of recursion here, but it won't be fun to deal with.
> Perfection isn't what I'm looking for, rather just an approximation.
> Any tool would have to give up on non-trivial recursion, or have

... in which case it will be useless - anything callable from path_walk()
will be out of its scope and that's a fairly large part of VFS, filesystems,
VM and upper halves of block devices.

> additional rules imposed on the system. Checker seems to be growing
> functionality in this area, so it seems like a useful feature request.

Just be careful with that loop - (mutual) recursion through ->follow_link()
must be special-cased if you want anything interesting to come out of that.

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