Messages in this thread | | | Date | Fri, 2 Aug 2019 17:37:51 +0200 | From | Greg Kroah-Hartman <> | Subject | Re: [PATCH 4.14 25/25] sched/fair: Use RCU accessors consistently for ->numa_group |
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On Fri, Aug 02, 2019 at 11:39:57AM +0200, Greg Kroah-Hartman wrote: > From: Jann Horn <jannh@google.com> > > commit cb361d8cdef69990f6b4504dc1fd9a594d983c97 upstream. > > The old code used RCU annotations and accessors inconsistently for > ->numa_group, which can lead to use-after-frees and NULL dereferences. > > Let all accesses to ->numa_group use proper RCU helpers to prevent such > issues. > > Signed-off-by: Jann Horn <jannh@google.com> > Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> > Cc: Linus Torvalds <torvalds@linux-foundation.org> > Cc: Peter Zijlstra <peterz@infradead.org> > Cc: Petr Mladek <pmladek@suse.com> > Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> > Cc: Thomas Gleixner <tglx@linutronix.de> > Cc: Will Deacon <will@kernel.org> > Fixes: 8c8a743c5087 ("sched/numa: Use {cpu, pid} to create task groups for shared faults") > Link: https://lkml.kernel.org/r/20190716152047.14424-3-jannh@google.com > Signed-off-by: Ingo Molnar <mingo@kernel.org> > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Oops, nope, this didn't apply, sorry about that, it needs to be properly backported to 4.14.y and older before it can go here.
thanks,
greg k-h
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