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David Howells f7627c8198 rxrpc: Fix the rxrpc_connection attend queue handling 
[ Upstream commit 4241a702e0 ]

The rxrpc_connection attend queue is never used because conn::attend_link
is never initialised and so is always NULL'd out and thus always appears to
be busy.  This requires the following fix:

 (1) Fix this the attend queue problem by initialising conn::attend_link.

And, consequently, two further fixes for things masked by the above bug:

 (2) Fix rxrpc_input_conn_event() to handle being invoked with a NULL
     sk_buff pointer - something that can now happen with the above change.

 (3) Fix the RXRPC_SKB_MARK_SERVICE_CONN_SECURED message to carry a pointer
     to the connection and a ref on it.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Paolo Abeni <pabeni@redhat.com>
cc: Simon Horman <horms@kernel.org>
cc: linux-afs@lists.infradead.org
cc: netdev@vger.kernel.org
Fixes: f2cce89a07 ("rxrpc: Implement a mechanism to send an event notification to a connection")
Link: https://patch.msgid.link/20250203110307.7265-3-dhowells@redhat.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-02-17 09:40:13 +01:00
..
events rxrpc: Fix the rxrpc_connection attend queue handling 2025-02-17 09:40:13 +01:00
misc NFSD: add CB_RECALL_ANY tracepoints 2022-12-10 11:01:12 -05:00
stages tracing: Error if a trace event has an array for a __field() 2023-04-03 11:52:51 -04:00
bpf_probe.h kernel.h: split out COUNT_ARGS() and CONCATENATE() to args.h 2023-08-18 10:18:56 -07:00
define_custom_trace.h tracing: Add TRACE_CUSTOM_EVENT() macro 2022-03-11 11:49:24 -05:00
define_trace.h tracepoint: Optimize using static_call() 2020-09-01 09:58:06 +02:00
perf.h perf/tracing: Use stage6 of tracing to not duplicate macros 2023-01-25 10:31:24 -05:00
syscall.h tracepoints: Migrate to use SYSCALL_WORK flag 2020-11-16 21:53:15 +01:00
trace_custom_events.h tracing: Rename the staging files for trace_events 2022-04-02 08:40:04 -04:00
trace_events.h tracing/ftrace: disable preemption in syscall probe 2024-12-14 20:00:10 +01:00