linux-kernel - Re: [syzbot] Re: [syzbot] [nfs?] [net?] possible deadlock in rpc_close

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Message-ID: <6865da26.a70a0220.2b31f5.0009.GAE@google.com>
Date: Wed, 02 Jul 2025 18:17:26 -0700
From: syzbot <syzbot+169de184e9defe7fe709@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org
Subject: Re: [syzbot] Re: [syzbot] [nfs?] [net?] possible deadlock in rpc_close_pipes

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Subject: Re: [syzbot] [nfs?] [net?] possible deadlock in rpc_close_pipes
Author: lizhi.xu@...driver.com

#syz test

diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index 0bd1df2ebb47..ae5643e0bc43 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -693,7 +693,7 @@ void
 rpc_unlink(struct rpc_pipe *pipe)
 {
 	if (pipe->dentry) {
-		simple_recursive_removal(pipe->dentry, rpc_close_pipes);
+		locked_recursive_removal(pipe->dentry, rpc_close_pipes);
 		pipe->dentry = NULL;
 	}
 }