Messages in this thread | | | Subject | Re: [RFC][PATCH] muptiple bugs in PI futexes | From | Thomas Gleixner <> | Date | Tue, 05 Jun 2007 23:13:06 +0200 |
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On Wed, 2007-06-06 at 01:00 +0400, Alexey Kuznetsov wrote: > Hello! > > > We actually need to do something about this, as we might loop for ever > > there. The robust cleanup code can fail (e.g. due to list corruption) > > and we would see exit_state != 0 and the OWNER_DIED bit would never be > > set, so we are stuck in a busy loop. > > Yes... > > It is possible to take read_lock(&tasklist_lock) before:
We really want to avoid the tasklist_lock at all. It's not trivial, but I think it's doable. I send you a patch to test tomorrow morning when my brain recovered from looking at that code :)
tglx
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