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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,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 95D23C3A5A0 for ; Sat, 18 Apr 2020 14:46:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 753FB21BE5 for ; Sat, 18 Apr 2020 14:46:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587221193; bh=UMlaP/NeGsbjNpFWIDP5Jdm0OEQJeTjnAjNiEBovdZU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=GBvmT2v8sODlY7rT9E1gsLgmojRClKUg0pmF6z7LhGYYy+fA4EV/s/rlShfW2yB27 gwuF/1G4vCnGSjCjaPYagoEr755RPeJk4649StAjcyKYnjKyTVinV7/Qabe9NjK6Ul g6huQofr8IXIOtp6WodxO2rBFdDWQuyA/NWZ5FDM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728831AbgDROod (ORCPT ); Sat, 18 Apr 2020 10:44:33 -0400 Received: from mail.kernel.org ([198.145.29.99]:56320 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728827AbgDROoc (ORCPT ); Sat, 18 Apr 2020 10:44:32 -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 1CD242220A; Sat, 18 Apr 2020 14:44:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587221071; bh=UMlaP/NeGsbjNpFWIDP5Jdm0OEQJeTjnAjNiEBovdZU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BCwEj0IEhUOw/uOJv4QiXZXKnTHkyr1D2X2vDosZd0+cIG8ylDjHCO8yL0bYpnfqh gxSj5fgeyBdurnXQm3krwdD8iq2X/0GAwCyOXyU5iWP3XqbJqJZBXCqY4HGngxcBGI 0rZi3rxGGbOM3AeeUrcEoiIF4iWg7v88xWdFvSxo= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Kai-Heng Feng , Jens Axboe , Sasha Levin , linux-ide@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 20/23] libata: Return correct status in sata_pmp_eh_recover_pm() when ATA_DFLAG_DETACH is set Date: Sat, 18 Apr 2020 10:44:02 -0400 Message-Id: <20200418144405.10565-20-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200418144405.10565-1-sashal@kernel.org> References: <20200418144405.10565-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-ide-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ide@vger.kernel.org From: Kai-Heng Feng [ Upstream commit 8305f72f952cff21ce8109dc1ea4b321c8efc5af ] 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: Sasha Levin --- drivers/ata/libata-pmp.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/ata/libata-pmp.c b/drivers/ata/libata-pmp.c index 85aa76116a305..7924d0635718d 100644 --- a/drivers/ata/libata-pmp.c +++ b/drivers/ata/libata-pmp.c @@ -764,6 +764,7 @@ static int sata_pmp_eh_recover_pmp(struct ata_port *ap, if (dev->flags & ATA_DFLAG_DETACH) { detach = 1; + rc = -ENODEV; goto fail; } -- 2.20.1