Re: [RFC][PATCH] malloc:checked_request2size fail will let malloc futex locked

Bernhard Reutner-Fischer <[email protected]> Wed, 18 Mar 2015 22:44:11 +0100

Newsgroups	gmane.comp.lib.uclibc.general
Message-ID	<[email protected]>

On Wed, Mar 18, 2015 at 12:05:12PM +0100, Bernhard Reutner-Fischer wrote:
> On March 18, 2015 11:44:50 AM GMT+01:00, Zhiqiang Zhang <[email protected]> wrote:
> >For some rarely cases(almost App bugs), calling malloc with
> >a very largre size, checked_request2size check will fail,set
> >ENOMEM, and return 0 to caller.
> >
> >But this will let __malloc_lock futex locked and owned by the
> >caller. In multithread circumstance, other thread calling
> >malloc/calloc will NOT succeed and get locked.
> 
> Testcase, please?
> Are the other 2 malloc implementations affected, too?

Never mind, the patch is ok.

Applied, thanks!