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

Bernhard Reutner-Fischer rep.dot.nop at gmail.com
Wed Mar 18 21:44:11 UTC 2015

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 <zhangzhiqiang.zhang at huawei.com> 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!

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