On Wed, Apr 12, 2017 at 09:55:37AM -0700, Paul E. McKenney wrote: > A group of Linux kernel hackers reported chasing a bug that resulted > from their assumption that SLAB_DESTROY_BY_RCU provided an existence > guarantee, that is, that no block from such a slab would be reallocated > during an RCU read-side critical section. Of course, that is not the > case. Instead, SLAB_DESTROY_BY_RCU only prevents freeing of an entire > slab of blocks.
And that while we wrote a huge honking comment right along with it... > [ paulmck: Add "tombstone" comments as requested by Eric Dumazet. ] I cannot find any occurrence of "tomb" or "TOMB" in the actual patch, confused?
