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SubjectRe: [PATCH] 2.4: Fix steal_locks race
Hello,

thanks a lot for analyzing this. Please see the patch I just posted unter
the subject:

[PATCH] 2.4.22-rc2 steal_locks and load_elf_binary cleanups

That patch fixes the bug in a slightly cleaner way.

On Sat, 9 Aug 2003, Herbert Xu wrote:

> On Fri, Aug 08, 2003 at 08:53:21PM +1000, herbert wrote:
> >
> > The steal_locks() call in binfmt_elf.c is buggy. It steals locks from
> > a files entry whose reference was dropped much earlier. This allows it
> > to steal other process's locks.

This makes sense.

> > The following patch calls steal_locks() earlier so that this does not
> > happen.
>
> My patch is buggy too. If a file is closed by another clone between
> the two steal_locks calls the lock will again be lost. Fortunately
> this much harder to trigger than the previous bug.
>
> The following patch fixes that.
>
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