Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 4.19 28/37] ipvlan: do not use cond_resched_rcu() in ipvlan_process_multicast() | Date | Wed, 18 Mar 2020 16:55:00 -0400 |
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From: Eric Dumazet <edumazet@google.com>
[ Upstream commit afe207d80a61e4d6e7cfa0611a4af46d0ba95628 ]
Commit e18b353f102e ("ipvlan: add cond_resched_rcu() while processing muticast backlog") added a cond_resched_rcu() in a loop using rcu protection to iterate over slaves.
This is breaking rcu rules, so lets instead use cond_resched() at a point we can reschedule
Fixes: e18b353f102e ("ipvlan: add cond_resched_rcu() while processing muticast backlog") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Mahesh Bandewar <maheshb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/net/ipvlan/ipvlan_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ipvlan/ipvlan_core.c b/drivers/net/ipvlan/ipvlan_core.c index 6fe24721e4856..40ac60904c8dd 100644 --- a/drivers/net/ipvlan/ipvlan_core.c +++ b/drivers/net/ipvlan/ipvlan_core.c @@ -282,7 +282,6 @@ void ipvlan_process_multicast(struct work_struct *work) } ipvlan_count_rx(ipvlan, len, ret == NET_RX_SUCCESS, true); local_bh_enable(); - cond_resched_rcu(); } rcu_read_unlock(); @@ -299,6 +298,7 @@ void ipvlan_process_multicast(struct work_struct *work) } if (dev) dev_put(dev); + cond_resched(); } } -- 2.20.1
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