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Filename	Latest commit message	Latest commit date
Vlad Buslov 5ff0ab0c66 net: sched: act_sample: fix psample group handling on overwrite ... [ Upstream commit dbf47a2a094edf58983265e323ca4bdcdb58b5ee ] Action sample doesn't properly handle psample_group pointer in overwrite case. Following issues need to be fixed: - In tcf_sample_init() function RCU_INIT_POINTER() is used to set s->psample_group, even though we neither setting the pointer to NULL, nor preventing concurrent readers from accessing the pointer in some way. Use rcu_swap_protected() instead to safely reset the pointer. - Old value of s->psample_group is not released or deallocated in any way, which results resource leak. Use psample_group_put() on non-NULL value obtained with rcu_swap_protected(). - The function psample_group_put() that released reference to struct psample_group pointed by rcu-pointer s->psample_group doesn't respect rcu grace period when deallocating it. Extend struct psample_group with rcu head and use kfree_rcu when freeing it. Fixes: 5c5670fae4 ("net/sched: Introduce sample tc action") Signed-off-by: Vlad Buslov <vladbu@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-09-10 10:33:38 +01:00
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Kconfig	net: Introduce psample, a new genetlink channel for packet sampling	2017-01-24 13:44:28 -05:00
Makefile	net: Introduce psample, a new genetlink channel for packet sampling	2017-01-24 13:44:28 -05:00
psample.c	net: sched: act_sample: fix psample group handling on overwrite	2019-09-10 10:33:38 +01:00