From: Trond Myklebust <trond.myklebust@hammerspace.com>
Date: Fri, 28 Mar 2025 16:52:52 +0000 (-0400)
Subject: SUNRPC: Don't allow waiting for exiting tasks
X-Git-Tag: v6.15-rc1~50^2~3
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=14e41b16e8cb677bb440dca2edba8b041646c742;p=thirdparty%2Fkernel%2Flinux.git

SUNRPC: Don't allow waiting for exiting tasks

Once a task calls exit_signals() it can no longer be signalled. So do
not allow it to do killable waits.

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
---

diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 9b45fbdc90cab..73bc39281ef5f 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -276,6 +276,8 @@ EXPORT_SYMBOL_GPL(rpc_destroy_wait_queue);
 
 static int rpc_wait_bit_killable(struct wait_bit_key *key, int mode)
 {
+	if (unlikely(current->flags & PF_EXITING))
+		return -EINTR;
 	schedule();
 	if (signal_pending_state(mode, current))
 		return -ERESTARTSYS;