tree befc53d79958834fbd3751c444cf98786dde5188
parent a37a0ee4d25c152a087c5e913b76f207eaebdb54
author Eric Dumazet <edumazet@google.com> 1638411995 -0800
committer David S. Miller <davem@davemloft.net> 1638446164 +0000

ipv4: convert fib_num_tclassid_users to atomic_t

Before commit faa041a40b9f ("ipv4: Create cleanup helper for fib_nh")
changes to net->ipv4.fib_num_tclassid_users were protected by RTNL.

After the change, this is no longer the case, as free_fib_info_rcu()
runs after rcu grace period, without rtnl being held.

Fixes: faa041a40b9f ("ipv4: Create cleanup helper for fib_nh")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: David Ahern <dsahern@kernel.org>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>