On Sat, 17 Nov 2007 09:55:01 -0800 Dane Mutters <[email protected]> wrote: > I don't know if this is at all feasible, but is it possible to have a > mechanism that would detect a fork bomb in progress and either stop the > fork, or allow the user to cancel the operation? For example, are there > any legitimate processes (i.e. ones that really need to fork like crazy) > that would need to generate 200+ processes in less than 1 second? > > (Note: I'm not a programmer; I'm just throwing out the idea.) > If the parent PID of the new task is exported through TASKSTATS, you can do it already in userspace. If not, that data should be exported. Then you could write a root daemon using netlink, set it to RT priority and create an inheritable counter in it to thwart binary forking. The counter would be cleared every x seconds. No need to do it in the kernel.
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