lkml.org 
[lkml]   [2022]   [Sep]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Subject[PATCH net v3 3/6] rxrpc: Fix local destruction being repeated
From
Date
If the local processor work item for the rxrpc local endpoint gets requeued
by an event (such as an incoming packet) between it getting scheduled for
destruction and the UDP socket being closed, the rxrpc_local_destroyer()
function can get run twice. The second time it can hang because it can end
up waiting for cleanup events that will never happen.

Signed-off-by: David Howells <dhowells@redhat.com>
---

net/rxrpc/local_object.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/net/rxrpc/local_object.c b/net/rxrpc/local_object.c
index 79bb02eb67b2..38ea98ff426b 100644
--- a/net/rxrpc/local_object.c
+++ b/net/rxrpc/local_object.c
@@ -406,6 +406,9 @@ static void rxrpc_local_processor(struct work_struct *work)
container_of(work, struct rxrpc_local, processor);
bool again;

+ if (local->dead)
+ return;
+
trace_rxrpc_local(local->debug_id, rxrpc_local_processing,
refcount_read(&local->ref), NULL);


\
 
 \ /
  Last update: 2022-09-01 14:27    [W:0.044 / U:0.324 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site