Commit 958a93c1 authored Feb 21, 2020 by Amol Grover Committed by David S. Miller Feb 24, 2020

tcp, ulp: Pass lockdep expression to RCU lists



tcp_ulp_list is traversed using list_for_each_entry_rcu
outside an RCU read-side critical section but under the protection
of tcp_ulp_list_lock.

Hence, add corresponding lockdep expression to silence false-positive
warnings, and harden RCU lists.t

Signed-off-by: Amol Grover <frextrite@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 27cf31dc

net/ipv4/tcp_ulp.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -22,7 +22,8 @@ static struct tcp_ulp_ops tcp_ulp_find(const char name)
		{
		struct tcp_ulp_ops *e;

		list_for_each_entry_rcu(e, &tcp_ulp_list, list) {
		list_for_each_entry_rcu(e, &tcp_ulp_list, list,
		lockdep_is_held(&tcp_ulp_list_lock)) {
		if (strcmp(e->name, name) == 0)
		return e;
		}

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