From patchwork Wed Nov 6 11:14:26 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wander Lairson Costa X-Patchwork-Id: 13864390 X-Patchwork-Delegate: kuba@kernel.org Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 0F5F018C00E for ; Wed, 6 Nov 2024 11:14:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730891699; cv=none; b=HVqwC1OHnZajVSLwYQGi51Wo2EFs3BBCMmxE0XYNXa6G7e0dFwl+Y/ngNZhRjxW5VSSpiSgVe0k978x7HMAciU2A5Spv2momsCNs+cQr4FizcqjZEkbqDVUzvqzRRRX87Q6l4p1//yGk28QBNY3erTsSVuE/2b0MFIpGAuFCXZ0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730891699; c=relaxed/simple; bh=w0uIJNp7DkoJvCA6I6hYVWnWQRy0FN8z4oGmjvTP7UA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=WnUMnp5FBLsm134YSRUE4bBat9oBiz4UIaWCOdxNlIVXjpOlqKy1/UI/wAWeFavbfiTeUmNfnXVjwOJdbMqNOsyKzTnChMuBA3MrKGRoywZouQ3pTxWyFAoUJ+lg1RcytqbwSgkx8Q0kncuomznlHjiAxZ0CQMGHeaeGRuPKKz4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=QsLWH5KI; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="QsLWH5KI" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1730891697; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=q/pUhWBxmCDgwQYzUjg0jWk3qPOCCQzEzMOB8Ax5AVQ=; b=QsLWH5KIyrtU8qJ61PLGFYaX9m5oWE8bfhtRSnS7PtpCCVcn3fCgaunoMNVC7vhjubLo0l IugeU/fwxul2trwWNYJRZAJG2q2ntWbBgniNtmF9hoCVo63p0gC1CZc6KuBJKfidJhyUke 1x+WZSm7XP/wVdtud16/FABL3tiYNSQ= Received: from mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-18-6LJtl8SbP8eoyf92emu2Kw-1; Wed, 06 Nov 2024 06:14:52 -0500 X-MC-Unique: 6LJtl8SbP8eoyf92emu2Kw-1 X-Mimecast-MFC-AGG-ID: 6LJtl8SbP8eoyf92emu2Kw Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 51797196CE34; Wed, 6 Nov 2024 11:14:42 +0000 (UTC) Received: from wcosta-thinkpadt14gen4.rmtbr.csb (unknown [10.22.80.50]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id C23FB1955F41; Wed, 6 Nov 2024 11:14:33 +0000 (UTC) From: Wander Lairson Costa To: Tony Nguyen , Przemek Kitszel , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Sebastian Andrzej Siewior , Clark Williams , Steven Rostedt , Simon Horman , Wander Lairson Costa , Jacob Keller , intel-wired-lan@lists.osuosl.org (moderated list:INTEL ETHERNET DRIVERS), netdev@vger.kernel.org (open list:NETWORKING DRIVERS), linux-kernel@vger.kernel.org (open list), linux-rt-devel@lists.linux.dev (open list:Real-time Linux (PREEMPT_RT):Keyword:PREEMPT_RT) Cc: tglx@linutronix.de Subject: [PATCH v2 1/4] Revert "igb: Disable threaded IRQ for igb_msix_other" Date: Wed, 6 Nov 2024 08:14:26 -0300 Message-ID: <20241106111427.7272-1-wander@redhat.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 X-Patchwork-Delegate: kuba@kernel.org This reverts commit 338c4d3902feb5be49bfda530a72c7ab860e2c9f. Sebastian noticed the ISR indirectly acquires spin_locks, which are sleeping locks under PREEMPT_RT, which leads to kernel splats. Fixes: 338c4d3902feb ("igb: Disable threaded IRQ for igb_msix_other") Reported-by: Sebastian Andrzej Siewior Signed-off-by: Wander Lairson Costa --- Changelog: v2: Add the Fixes tag Signed-off-by: Wander Lairson Costa --- drivers/net/ethernet/intel/igb/igb_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index b83df5f94b1f5..f1d0881687233 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -907,7 +907,7 @@ static int igb_request_msix(struct igb_adapter *adapter) int i, err = 0, vector = 0, free_vector = 0; err = request_irq(adapter->msix_entries[vector].vector, - igb_msix_other, IRQF_NO_THREAD, netdev->name, adapter); + igb_msix_other, 0, netdev->name, adapter); if (err) goto err_out;