Hi, while I reading tc action code to debug a "it does not work" statement I suppose I detected issues with the current rcu handling of tc actions.
There are more than just skbmod which do it wrong. Anyway if somebody agree with me here I will send more patches which fix this behaviour in other tc actions where code was just copy&pasted. The problem because nobody hits this issue is, I think that dump will do alot of previous stuff which took more time than a rcu_synchronize. Anyway, this change should avoid any use after free issues etc. - Alex Alexander Aring (1): net: sched: act: fix rcu race in dump net/sched/act_skbmod.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) -- 2.11.0
