diff options
| author | David Howells <dhowells@redhat.com> | 2019-10-07 10:58:29 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-27 14:51:16 +0100 |
| commit | c56289ec58f90100e33cb9f014f8e6560d4b54c7 (patch) | |
| tree | a134fa79f2149dbc061fbf14298270ce74dddb6d /include/trace | |
| parent | 77d02cb04bab5743e8e462c786bbd4e5414beb9e (diff) | |
rxrpc: Fix trace-after-put looking at the put connection record
[ Upstream commit 4c1295dccc0afe0905b6ca4c62ade7f2406f2cfb ]
rxrpc_put_*conn() calls trace_rxrpc_conn() after they have done the
decrement of the refcount - which looks at the debug_id in the connection
record. But unless the refcount was reduced to zero, we no longer have the
right to look in the record and, indeed, it may be deleted by some other
thread.
Fix this by getting the debug_id out before decrementing the refcount and
then passing that into the tracepoint.
Fixes: 363deeab6d0f ("rxrpc: Add connection tracepoint and client conn state tracepoint")
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/rxrpc.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/trace/events/rxrpc.h b/include/trace/events/rxrpc.h index a08916eb7615..0924119bcfa4 100644 --- a/include/trace/events/rxrpc.h +++ b/include/trace/events/rxrpc.h @@ -554,10 +554,10 @@ TRACE_EVENT(rxrpc_peer, ); TRACE_EVENT(rxrpc_conn, - TP_PROTO(struct rxrpc_connection *conn, enum rxrpc_conn_trace op, + TP_PROTO(unsigned int conn_debug_id, enum rxrpc_conn_trace op, int usage, const void *where), - TP_ARGS(conn, op, usage, where), + TP_ARGS(conn_debug_id, op, usage, where), TP_STRUCT__entry( __field(unsigned int, conn ) @@ -567,7 +567,7 @@ TRACE_EVENT(rxrpc_conn, ), TP_fast_assign( - __entry->conn = conn->debug_id; + __entry->conn = conn_debug_id; __entry->op = op; __entry->usage = usage; __entry->where = where; |