From mboxrd@z Thu Jan 1 00:00:00 1970 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 08F3D1AC458; Mon, 14 Oct 2024 15:32:18 +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=1728919939; cv=none; b=agIaoc4cw4+OZNajfBYKJW+jdSx4gSrDI+SquMhUSSZ46ci79s9hJvAWrVEqKOCgKs4eHjkmyhK9iWpKv8SdRFnLOzseUuW8mA/LkQjuAvT6ALL9NhRT5DKgy7eU2pID77o0cjB87P7TGast7T+Rjm6gnf2fJQbKeOtk0/Zg51M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728919939; c=relaxed/simple; bh=X1QqVBGh70pAok82oJL2iNrL1mmjTUKvLApFZD8dxCU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=siQAMnI9/gr6oE5teyXpmH1IRjJulC69n/mQebiqSJE66DsurY52cr37j0duJ55EOvZD9SBu41O2B5Fl+xcz5TWERI5H+OIEbqfi1TRp3V9VZxR9ppguRseWV3AqTw+r5tVcdVVRcUcROCZpu6fViXx0Fkr6lG4Qf+MpTeqMOco= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=IV+NSfg2; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="IV+NSfg2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2C113C4CEC3; Mon, 14 Oct 2024 15:32:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1728919938; bh=X1QqVBGh70pAok82oJL2iNrL1mmjTUKvLApFZD8dxCU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IV+NSfg2147dzR8KsEp/ejHdhC8eSAYc0P9qqQzBXlpfsgNADoXrZ2eRWRzWTiRjh XIjI4sdu/ltreVBsSTuIpeTg1+5jSQ1NpM5MmitqLa4+DJIDKeWbru++gmBWytSLOU 7BxSBveXHkOaDT4z6smGZqqZBcJdKkp2nkqJJYII= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mohamed Khalfella , Yuanyuan Zhong , Simon Horman , Tony Nguyen , Sasha Levin , Pucha Himasekhar Reddy Subject: [PATCH 6.1 751/798] igb: Do not bring the device up after non-fatal error Date: Mon, 14 Oct 2024 16:21:45 +0200 Message-ID: <20241014141247.574664703@linuxfoundation.org> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241014141217.941104064@linuxfoundation.org> References: <20241014141217.941104064@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Mohamed Khalfella [ Upstream commit 330a699ecbfc9c26ec92c6310686da1230b4e7eb ] Commit 004d25060c78 ("igb: Fix igb_down hung on surprise removal") changed igb_io_error_detected() to ignore non-fatal pcie errors in order to avoid hung task that can happen when igb_down() is called multiple times. This caused an issue when processing transient non-fatal errors. igb_io_resume(), which is called after igb_io_error_detected(), assumes that device is brought down by igb_io_error_detected() if the interface is up. This resulted in panic with stacktrace below. [ T3256] igb 0000:09:00.0 haeth0: igb: haeth0 NIC Link is Down [ T292] pcieport 0000:00:1c.5: AER: Uncorrected (Non-Fatal) error received: 0000:09:00.0 [ T292] igb 0000:09:00.0: PCIe Bus Error: severity=Uncorrected (Non-Fatal), type=Transaction Layer, (Requester ID) [ T292] igb 0000:09:00.0: device [8086:1537] error status/mask=00004000/00000000 [ T292] igb 0000:09:00.0: [14] CmpltTO [ 200.105524,009][ T292] igb 0000:09:00.0: AER: TLP Header: 00000000 00000000 00000000 00000000 [ T292] pcieport 0000:00:1c.5: AER: broadcast error_detected message [ T292] igb 0000:09:00.0: Non-correctable non-fatal error reported. [ T292] pcieport 0000:00:1c.5: AER: broadcast mmio_enabled message [ T292] pcieport 0000:00:1c.5: AER: broadcast resume message [ T292] ------------[ cut here ]------------ [ T292] kernel BUG at net/core/dev.c:6539! [ T292] invalid opcode: 0000 [#1] PREEMPT SMP [ T292] RIP: 0010:napi_enable+0x37/0x40 [ T292] Call Trace: [ T292] [ T292] ? die+0x33/0x90 [ T292] ? do_trap+0xdc/0x110 [ T292] ? napi_enable+0x37/0x40 [ T292] ? do_error_trap+0x70/0xb0 [ T292] ? napi_enable+0x37/0x40 [ T292] ? napi_enable+0x37/0x40 [ T292] ? exc_invalid_op+0x4e/0x70 [ T292] ? napi_enable+0x37/0x40 [ T292] ? asm_exc_invalid_op+0x16/0x20 [ T292] ? napi_enable+0x37/0x40 [ T292] igb_up+0x41/0x150 [ T292] igb_io_resume+0x25/0x70 [ T292] report_resume+0x54/0x70 [ T292] ? report_frozen_detected+0x20/0x20 [ T292] pci_walk_bus+0x6c/0x90 [ T292] ? aer_print_port_info+0xa0/0xa0 [ T292] pcie_do_recovery+0x22f/0x380 [ T292] aer_process_err_devices+0x110/0x160 [ T292] aer_isr+0x1c1/0x1e0 [ T292] ? disable_irq_nosync+0x10/0x10 [ T292] irq_thread_fn+0x1a/0x60 [ T292] irq_thread+0xe3/0x1a0 [ T292] ? irq_set_affinity_notifier+0x120/0x120 [ T292] ? irq_affinity_notify+0x100/0x100 [ T292] kthread+0xe2/0x110 [ T292] ? kthread_complete_and_exit+0x20/0x20 [ T292] ret_from_fork+0x2d/0x50 [ T292] ? kthread_complete_and_exit+0x20/0x20 [ T292] ret_from_fork_asm+0x11/0x20 [ T292] To fix this issue igb_io_resume() checks if the interface is running and the device is not down this means igb_io_error_detected() did not bring the device down and there is no need to bring it up. Signed-off-by: Mohamed Khalfella Reviewed-by: Yuanyuan Zhong Fixes: 004d25060c78 ("igb: Fix igb_down hung on surprise removal") Reviewed-by: Simon Horman Tested-by: Pucha Himasekhar Reddy (A Contingent worker at Intel) Signed-off-by: Tony Nguyen Signed-off-by: Sasha Levin --- drivers/net/ethernet/intel/igb/igb_main.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index f2f719a952f8d..2e2caf559d00a 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -9666,6 +9666,10 @@ static void igb_io_resume(struct pci_dev *pdev) struct igb_adapter *adapter = netdev_priv(netdev); if (netif_running(netdev)) { + if (!test_bit(__IGB_DOWN, &adapter->state)) { + dev_dbg(&pdev->dev, "Resuming from non-fatal error, do nothing.\n"); + return; + } if (igb_up(adapter)) { dev_err(&pdev->dev, "igb_up failed after reset\n"); return; -- 2.43.0