* Tejun Heo <[email protected]> wrote:
> On Thu, Apr 18, 2013 at 06:33:18PM +0900, Masami Hiramatsu wrote:
> > Fix a double locking bug caused when debug.kprobe-optimization=0.
> > While the proc_kprobes_optimization_handler locks kprobe_mutex,
> > wait_for_kprobe_optimizer locks it again and that causes a double lock.
> > To fix the bug, this introduces different mutex for protecting
> > sysctl parameter and locks it in proc_kprobes_optimization_handler.
> > Of course, since we need to lock kprobe_mutex when touching kprobes
> > resources, that is done in *optimize_all_kprobes().
> >
> > This bug was from ad72b3bea744b4db01c89af0f86f3e8920d354df
> >
> > Signed-off-by: Masami Hiramatsu <[email protected]>
> > Cc: Ingo Molnar <[email protected]>
> > Cc: Tejun Heo <[email protected]>
> > Cc: Ananth N Mavinakayanahalli <[email protected]>
> > Cc: "David S. Miller" <[email protected]>
>
> Oops,
>
> Acked-by: Tejun Heo <[email protected]>
Since you pushed the original commit, mind pushing this fix to Linus too?
Thanks,
Ingo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
