Messages in this thread |  | | From | Oliver Neukum <> | Subject | Re: [RFC] Race condition? | Date | Fri, 2 Aug 2002 20:51:55 +0200 |
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Am Freitag, 2. August 2002 19:13 schrieb Kasper Dupont: > Oliver Neukum wrote: > > Am Freitag, 2. August 2002 15:46 schrieb Kasper Dupont: > > > Is there a race condition in this piece of code from do_fork in > > > > It would seem so. Perhaps the BKL was taken previously. > > I guess you are right. Looking closer on the following lines > I find a comment stating that nr_threads is protected by the > kernel lock, but I don't see a lock_kernel() anywhere in this > code. How about the next code using the nr_threads variable, > is that safe?
No, it isn't either. In fact you can even lose updates as it isn't atomic_t.
Regards Oliver
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