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rxrpc: Fix some missing _bh annotations on locking conn->state_lock 

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: a1399f8bb0 ("rxrpc: Call channels should have separate call number spaces")
Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2020-10-01 11:57:40 +01:00
parent 9a059cd5ca
commit fa1d113a0f
1 changed files with 3 additions and 3 deletions
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6
net/rxrpc/conn_event.c
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@ -340,18 +340,18 @@ 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);