From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5D8F6C64E7D for ; Tue, 27 Oct 2020 00:41:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3AE192242F for ; Tue, 27 Oct 2020 00:41:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603759305; bh=qJzPW3OxS5BO+JElgCEQtzOpg3Ebd0WJKjndwZZP0LM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=01HEBDcqKilrYNrPs5xNwkgYJnYTgZl96c58Ep7Gk32//Z6sPhDPOop3B8Bzx13aV HGK7dykKJZRNNepjFWFbhiqNWvV255To6OfLUMlS8vyaFch/sQGP6axuzL/D1Us0Ec 7E26o+qU5E6/3yoDHqT+d2mWd+L3QyeaggzLZTBw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2444319AbgJ0Aid (ORCPT ); Mon, 26 Oct 2020 20:38:33 -0400 Received: from mail.kernel.org ([198.145.29.99]:47522 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2408718AbgJZXt3 (ORCPT ); Mon, 26 Oct 2020 19:49:29 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3083421741; Mon, 26 Oct 2020 23:49:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603756168; bh=qJzPW3OxS5BO+JElgCEQtzOpg3Ebd0WJKjndwZZP0LM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dA7Nhq4XvNHMbFewlv4E+oiiip8/Gwh5zOUskDFbYd6dL4fh4sdrpzjZFGGiNJ33d NdorO+5YYvpp+qUAhFqbidfP8BHF1XnCCjXhHFfUOI33nRcQ8Q3QGg3utS9TN3+Svf QC5L6XjBh+TiU/aLb3+X+o5DbIk0+uupj+h2TVyQ= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: David Howells , Sasha Levin , linux-afs@lists.infradead.org Subject: [PATCH AUTOSEL 5.9 018/147] afs: Don't assert on unpurgeable server records Date: Mon, 26 Oct 2020 19:46:56 -0400 Message-Id: <20201026234905.1022767-18-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201026234905.1022767-1-sashal@kernel.org> References: <20201026234905.1022767-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: David Howells [ Upstream commit 7530d3eb3dcf1a30750e8e7f1f88b782b96b72b8 ] Don't give an assertion failure on unpurgeable afs_server records - which kills the thread - but rather emit a trace line when we are purging a record (which only happens during network namespace removal or rmmod) and print a notice of the problem. Signed-off-by: David Howells Signed-off-by: Sasha Levin --- fs/afs/server.c | 7 ++++++- include/trace/events/afs.h | 2 ++ 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/fs/afs/server.c b/fs/afs/server.c index e82e452e26124..684a2b02b9ff7 100644 --- a/fs/afs/server.c +++ b/fs/afs/server.c @@ -550,7 +550,12 @@ void afs_manage_servers(struct work_struct *work) _debug("manage %pU %u", &server->uuid, active); - ASSERTIFCMP(purging, active, ==, 0); + if (purging) { + trace_afs_server(server, atomic_read(&server->ref), + active, afs_server_trace_purging); + if (active != 0) + pr_notice("Can't purge s=%08x\n", server->debug_id); + } if (active == 0) { time64_t expire_at = server->unuse_time; diff --git a/include/trace/events/afs.h b/include/trace/events/afs.h index 5f0c1cf1ea130..55d53234bfdf6 100644 --- a/include/trace/events/afs.h +++ b/include/trace/events/afs.h @@ -40,6 +40,7 @@ enum afs_server_trace { afs_server_trace_get_new_cbi, afs_server_trace_get_probe, afs_server_trace_give_up_cb, + afs_server_trace_purging, afs_server_trace_put_call, afs_server_trace_put_cbi, afs_server_trace_put_find_rsq, @@ -270,6 +271,7 @@ enum afs_cb_break_reason { EM(afs_server_trace_get_new_cbi, "GET cbi ") \ EM(afs_server_trace_get_probe, "GET probe") \ EM(afs_server_trace_give_up_cb, "giveup-cb") \ + EM(afs_server_trace_purging, "PURGE ") \ EM(afs_server_trace_put_call, "PUT call ") \ EM(afs_server_trace_put_cbi, "PUT cbi ") \ EM(afs_server_trace_put_find_rsq, "PUT f-rsq") \ -- 2.25.1