From 81f997b4b9f4527be45699224ec7f7ac4970cef4 Mon Sep 17 00:00:00 2001
From: David Howells <dhowells@redhat.com>
Date: Thu, 1 Oct 2020 11:57:40 +0100
Subject: [PATCH] rxrpc: Fix some missing _bh annotations on locking
conn->state_lock
[ Upstream commit fa1d113a0f96f9ab7e4fe4f8825753ba1e34a9d3 ]
conn->state_lock may be taken in softirq mode, but a previous patch
replaced an outer lock in the response-packet event handling code, and lost
the _bh from that when doing so.
Fix this by applying the _bh annotation to the state_lock locking.
Fixes: a1399f8bb033 ("rxrpc: Call channels should have separate call number spaces")
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/rxrpc/conn_event.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/rxrpc/conn_event.c b/net/rxrpc/conn_event.c
index b099b64366f35..ec02dd7c12ef4 100644
--- a/net/rxrpc/conn_event.c
+++ b/net/rxrpc/conn_event.c
@@ -309,18 +309,18 @@ static int rxrpc_process_event(struct rxrpc_connection *conn,
return ret;
spin_lock(&conn->channel_lock);
- spin_lock(&conn->state_lock);
+ spin_lock_bh(&conn->state_lock);
if (conn->state == RXRPC_CONN_SERVICE_CHALLENGING) {
conn->state = RXRPC_CONN_SERVICE;
- spin_unlock(&conn->state_lock);
+ spin_unlock_bh(&conn->state_lock);
for (loop = 0; loop < RXRPC_MAXCALLS; loop++)
rxrpc_call_is_secure(
rcu_dereference_protected(
conn->channels[loop].call,
lockdep_is_held(&conn->channel_lock)));
} else {
- spin_unlock(&conn->state_lock);
+ spin_unlock_bh(&conn->state_lock);
}
spin_unlock(&conn->channel_lock);