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Date: Wed, 16 Oct 2013 18:17:33 +0530 From: Srikar Dronamraju <srikar@...ux.vnet.ibm.com> To: Oleg Nesterov <oleg@...hat.com> Cc: Ingo Molnar <mingo@...e.hu>, Anton Arapov <aarapov@...hat.com>, David Smith <dsmith@...hat.com>, "Frank Ch. Eigler" <fche@...hat.com>, Martin Cermak <mcermak@...hat.com>, Peter Zijlstra <peterz@...radead.org>, linux-kernel@...r.kernel.org Subject: Re: [PATCH 4/5] uprobes: Change uprobe_copy_process() to dup return_instances * Oleg Nesterov <oleg@...hat.com> [2013-10-13 21:18:41]: > uprobe_copy_process() assumes that the new child doesn't need > ->utask, it should be allocated by demand. > > But this is not true if the forking task has the pending ret- > probes, the child should report them as well and thus it needs > the copy of parent's ->return_instances chain. Otherwise the > child crashes when it returns from the probed function. > > Note: this change alone doesn't fix the problem, see the next > change. > > Cc: stable@...r.kernel.org # 3.9+ > Reported-by: Martin Cermak <mcermak@...hat.com> > Reported-by: David Smith <dsmith@...hat.com> > Signed-off-by: Oleg Nesterov <oleg@...hat.com> Acked-by: Srikar Dronamraju <srikar@...ux.vnet.ibm.com> -- Thanks and Regards Srikar Dronamraju -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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