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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 2EEC0C2BB85 for ; Thu, 16 Apr 2020 15:33:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 06A0121927 for ; Thu, 16 Apr 2020 15:33:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587051227; bh=x88x2MROQSuasxIps+Xd6wS0fxFRe6Oh0oZV5yoekJ8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=pt+M80wOoMsC+U4REOBb1f8n/m9CEKypMaPb0RdPAph4VI5M0FdnePpR6GnHo9VAu 78IoNN1ka6VtqD2JUE624bVnoATJaP+ZBncTNfsTBX8GAC+4n/PfuOSAEYLV5bdfKy rH0wJAYkp0qVIIhni4wmEIkU189mNlU+8ZNHsg9Y= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2634954AbgDPPdo (ORCPT ); Thu, 16 Apr 2020 11:33:44 -0400 Received: from mail.kernel.org ([198.145.29.99]:53938 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2898275AbgDPNlO (ORCPT ); Thu, 16 Apr 2020 09:41:14 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3793D20732; Thu, 16 Apr 2020 13:41:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587044473; bh=x88x2MROQSuasxIps+Xd6wS0fxFRe6Oh0oZV5yoekJ8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QlThskKRTMsg/uUydlpgtXeDRSECX+LHeyYjMESP7SF3lFtQDHrAQpOzxy91o4Qa6 RURMDRTCZJ+snwiz1pA0e38AVMx+Hr63bDFKVTnNC1Co+A+YNC7FiGbPy8ExI++Dfx yuTevCQsBxJ/BRCzWDttVkvK4pkdMSxLFB8+4ODc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Kai-Heng Feng , Jens Axboe Subject: [PATCH 5.5 232/257] libata: Return correct status in sata_pmp_eh_recover_pm() when ATA_DFLAG_DETACH is set Date: Thu, 16 Apr 2020 15:24:43 +0200 Message-Id: <20200416131354.691542527@linuxfoundation.org> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200416131325.891903893@linuxfoundation.org> References: <20200416131325.891903893@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kai-Heng Feng commit 8305f72f952cff21ce8109dc1ea4b321c8efc5af upstream. During system resume from suspend, this can be observed on ASM1062 PMP controller: ata10.01: SATA link down (SStatus 0 SControl 330) ata10.02: hard resetting link ata10.02: SATA link down (SStatus 0 SControl 330) ata10.00: configured for UDMA/133 Kernel panic - not syncing: stack-protector: Kernel in: sata_pmp_eh_recover+0xa2b/0xa40 CPU: 2 PID: 230 Comm: scsi_eh_9 Tainted: P OE #49-Ubuntu Hardware name: System manufacturer System Product 1001 12/10/2017 Call Trace: dump_stack+0x63/0x8b panic+0xe4/0x244 ? sata_pmp_eh_recover+0xa2b/0xa40 __stack_chk_fail+0x19/0x20 sata_pmp_eh_recover+0xa2b/0xa40 ? ahci_do_softreset+0x260/0x260 [libahci] ? ahci_do_hardreset+0x140/0x140 [libahci] ? ata_phys_link_offline+0x60/0x60 ? ahci_stop_engine+0xc0/0xc0 [libahci] sata_pmp_error_handler+0x22/0x30 ahci_error_handler+0x45/0x80 [libahci] ata_scsi_port_error_handler+0x29b/0x770 ? ata_scsi_cmd_error_handler+0x101/0x140 ata_scsi_error+0x95/0xd0 ? scsi_try_target_reset+0x90/0x90 scsi_error_handler+0xd0/0x5b0 kthread+0x121/0x140 ? scsi_eh_get_sense+0x200/0x200 ? kthread_create_worker_on_cpu+0x70/0x70 ret_from_fork+0x22/0x40 Kernel Offset: 0xcc00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) Since sata_pmp_eh_recover_pmp() doens't set rc when ATA_DFLAG_DETACH is set, sata_pmp_eh_recover() continues to run. During retry it triggers the stack protector. Set correct rc in sata_pmp_eh_recover_pmp() to let sata_pmp_eh_recover() jump to pmp_fail directly. BugLink: https://bugs.launchpad.net/bugs/1821434 Cc: stable@vger.kernel.org Signed-off-by: Kai-Heng Feng Signed-off-by: Jens Axboe Signed-off-by: Greg Kroah-Hartman --- drivers/ata/libata-pmp.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/ata/libata-pmp.c +++ b/drivers/ata/libata-pmp.c @@ -763,6 +763,7 @@ static int sata_pmp_eh_recover_pmp(struc if (dev->flags & ATA_DFLAG_DETACH) { detach = 1; + rc = -ENODEV; goto fail; }