From patchwork Fri Mar 28 17:40:44 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Trond Myklebust X-Patchwork-Id: 14032329 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 164E049625 for ; Fri, 28 Mar 2025 17:40:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743183647; cv=none; b=mibJCchFL5ZBffjX4PuDT0lWs6ElGu/+VBaX96Qp4CaG2eR2FqKxmEETXtCP5yzix2RPGFBAVTykyhRyqi2v3fDoUufQudUwTL8uv71jBKNhSA08Cx/pF9OsD0Y0VXMidDKurtcNb+oYVYuJYHn+0IhMaSiLg0tzEg+s8t7Ay7Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743183647; c=relaxed/simple; bh=cwXGJRpvPBuSWtVkBl/2/ikLZMnzRICAnuQbEHlJk7E=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=XpOvQraFDPY/cI3TEGVFXHOo00UwL9ECSTZtnWf8Y/kIUUYYGO9QeUBeH0llvm39cueiBBC424jQyqIVig0/1NMboTAis1LK9S9Vk5hY9p59Mztf37Lpe378xnF043o1VfldxzeL0uu0IhQvKlpR+RDHol/pYDwd5Q39Kw1M0U8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=U4p8SM7Z; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="U4p8SM7Z" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5CCF8C4CEE4 for ; Fri, 28 Mar 2025 17:40:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1743183646; bh=cwXGJRpvPBuSWtVkBl/2/ikLZMnzRICAnuQbEHlJk7E=; h=From:To:Subject:Date:From; b=U4p8SM7Zl1HLBRBTD5W1fvm/e0IxxdD08vjwQWfkXhztZN3cCb1JqtGyRxHaQoRQo BAujqWW6VOxtD5Wr6EWeqDq8rUbpYK9apcBUoE03TSP4aAlUotGM5Gfn8LjqdQPcih KDopP99O0BK48NiddYTIxJfCFgjRsMJ4g5tOMyKSd5anR8ngnQNhn2QDSulqT+KEbP d/zbQjbXJLsx256aLveN4EP7oWcW9U9tYNdPl0Z7Dq/2TS+SeBPQl9xPeacYM19rBH nP0JR/oBQ6qmYNfgX53PihIhd3SAAmgyxTE9M8mJp8yzMoLeLvb5uQ/3EziHav1Yq+ oAAFkIM1BQEbw== From: trondmy@kernel.org To: linux-nfs@vger.kernel.org Subject: [PATCH 1/2] SUNRPC: Don't allow waiting for exiting tasks Date: Fri, 28 Mar 2025 13:40:44 -0400 Message-ID: X-Mailer: git-send-email 2.49.0 Precedence: bulk X-Mailing-List: linux-nfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Trond Myklebust Once a task calls exit_signals() it can no longer be signalled. So do not allow it to do killable waits. Signed-off-by: Trond Myklebust Reviewed-by: Jeff Layton --- net/sunrpc/sched.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index 9b45fbdc90ca..73bc39281ef5 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;