60636aa77203 parent 3c709f8fb43e07a0403bba4a8ca7ba00ab874994 author Eric Dumazet 1305138156 +0000 committer David S. Miller 1305235630 -0400 l2tp: fix potential rcu race While trying to remove useless synchronize_rcu() calls, I found l2tp is indeed incorrectly using two of such calls, but also bumps tunnel refcount after list insertion. tunnel refcount must be incremented before being made publically visible by rcu readers. This fix can be applied to 2.6.35+ and might need a backport for older kernels, since things were shuffled in commit fd558d186df2c (l2tp: Split pppol2tp patch into separate l2tp and ppp parts) Signed-off-by: Eric Dumazet CC: Paul E. McKenney CC: James Chapman Reviewed-by: Paul E. McKenney Signed-off-by: David S. Miller ì