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ipvlan: do not use cond_resched_rcu() in ipvlan_process_multicast()

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[ 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Eric Dumazet 2020-03-09 18:22:58 -07:00 • committed by Greg Kroah-Hartman
commit 1f72737eec
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ipvlan/ipvlan_core.c
View file

@ -277,7 +277,6 @@ 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();
@ -294,6 +293,7 @@ void ipvlan_process_multicast(struct work_struct *work)
}
if (dev)
dev_put(dev);
cond_resched();
}
}