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authorDavid Howells <dhowells@redhat.com>2022-10-12 19:01:25 +0300
committerDavid Howells <dhowells@redhat.com>2023-01-06 12:43:31 +0300
commit03fc55adf8761c546d72798264b019c9f672c578 (patch)
tree2b72384f6f9ea81038f6f68d8d47e6722238b6e0 /include/trace/events
parenta343b174b4bdde851033996960bca5ad1394d04b (diff)
downloadlinux-03fc55adf8761c546d72798264b019c9f672c578.tar.xz
rxrpc: Only disconnect calls in the I/O thread
Only perform call disconnection in the I/O thread to reduce the locking requirement. This is the first part of a fix for a race that exists between call connection and call disconnection whereby the data transmission code adds the call to the peer error distribution list after the call has been disconnected (say by the rxrpc socket getting closed). The fix is to complete the process of moving call connection, data transmission and call disconnection into the I/O thread and thus forcibly serialising them. Note that the issue may predate the overhaul to an I/O thread model that were included in the merge window for v6.2, but the timing is very much changed by the change given below. Fixes: cf37b5987508 ("rxrpc: Move DATA transmission into call processor work item") Reported-by: syzbot+c22650d2844392afdcfd@syzkaller.appspotmail.com Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org
Diffstat (limited to 'include/trace/events')
-rw-r--r--include/trace/events/rxrpc.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/trace/events/rxrpc.h b/include/trace/events/rxrpc.h
index c44cc01de750..eac513668e33 100644
--- a/include/trace/events/rxrpc.h
+++ b/include/trace/events/rxrpc.h
@@ -18,6 +18,7 @@
*/
#define rxrpc_call_poke_traces \
EM(rxrpc_call_poke_abort, "Abort") \
+ EM(rxrpc_call_poke_complete, "Compl") \
EM(rxrpc_call_poke_error, "Error") \
EM(rxrpc_call_poke_idle, "Idle") \
EM(rxrpc_call_poke_start, "Start") \