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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A0202C87FDB for ; Mon, 11 Aug 2025 13:07:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: Message-ID:Date:References:In-Reply-To:Subject:Cc:To:From:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=uak9uMoSf1hFQNv+gxLqBrTo+PAvamtwLxZZOi8jwac=; b=dUAMSklo6Y2y7mf9oHPWF5hzPK Zf2UI+YPtryb3mDW1MH0i32Zt9Sklog8wg5KMX3x12fzttMeyTmiDLLQPntK7Bv+z/5/clVuHJyPs uRzHb1+uTXpHFydC3+TOb9HNavmhwE6FSpf+0MCSwQIrjaLGpG+9hV4RF6dgLxwVagx4lhSzNMZeU CbP0x0X+FE6VL0YDMff3y5AV6wtR+Kol2qUd1AvdMJHhp1w9z7kS/PxhPLuiFgDnAq60aS8NkGdiF VX/74Qpz/UayazrAvwWXyDOHbuTZT/Cs/qsCi1MOXVeSZ2hNiLVYHPPUcGQ8s8Z8svYn4phFPDZt3 VucRLK7Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1ulSFA-00000007lQM-1CWe; Mon, 11 Aug 2025 13:07:16 +0000 Received: from galois.linutronix.de ([193.142.43.55]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1ulSBP-00000007ksb-1tQO; Mon, 11 Aug 2025 13:03:24 +0000 From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1754917402; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=uak9uMoSf1hFQNv+gxLqBrTo+PAvamtwLxZZOi8jwac=; b=XZO+njxBaetbKcIwqfljGMkgIa5Zeyna5UbnXeGA5/ZWOVWdem0bMc0gbPhwaqJibZppBN lhJB/aTzKYeLDzgliK6Pmwk0o3YVcSSCM9qULRAau3dr2ec1RDUit/lDnNIk2zOGBJNGFw L54UYuQurl26uH529YlO0OAyKS9yv+65PiGv5iFCQIArxV2KXkuEMNtY7JoORNOPfzrPc5 FfVXlXLOl4h1N0E1fMhvvMc0eYR9EWNfLS2OsyObj1aqQEV9l2T1kg6qfX99uNyuyF2r7X oaLmX99jDar4TuvZgTOSVZ3P59HJjmfc+KZ87NpyvccPxvG8tZdv9w7fr7rHAQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1754917402; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=uak9uMoSf1hFQNv+gxLqBrTo+PAvamtwLxZZOi8jwac=; b=Nrv9aKmSaQqacXYMrZ9mwNow7CXAggaX2DJMyZkYm+KYRyt21towuYSwZZ+FNdT5BQS8+c jubCXSbpCj8csPAQ== To: Coiby Xu Cc: linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, kexec@lists.infradead.org, Marc Zyngier Subject: Re: [Regression] kdump fails to get DHCP address unless booting with pci=nomsi or without nr_cpus=1 In-Reply-To: <87bjom8106.ffs@tglx> References: <87bjom8106.ffs@tglx> Date: Mon, 11 Aug 2025 15:03:21 +0200 Message-ID: <878qjq80yu.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250811_060323_639468_BCCD615A X-CRM114-Status: GOOD ( 10.22 ) X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org On Mon, Aug 11 2025 at 15:02, Thomas Gleixner wrote: CC+ Marc > On Mon, Aug 11 2025 at 11:23, Coiby Xu wrote: >> Recently I met an issue that on certain virtual machines, the kdump >> kernel fails to get DHCP IP address most of times starting from >> 6.11-rc2. git bisection shows commit b5712bf89b4b ("irqchip/gic-v3-its: >> Provide MSI parent for PCI/MSI[-X]") is the 1st bad commit, >> >> # good: [7d189c77106ed6df09829f7a419e35ada67b2bd0] PCI/MSI: Provide >> # MSI_FLAG_PCI_MSI_MASK_PARENT >> git bisect good 7d189c77106ed6df09829f7a419e35ada67b2bd0 >> # good: [48f71d56e2b87839052d2a2ec32fc97a79c3e264] irqchip/gic-v3-its: >> # Provide MSI parent infrastructure >> git bisect good 48f71d56e2b87839052d2a2ec32fc97a79c3e264 >> # good: [8c41ccec839c622b2d1be769a95405e4e9a4cb20] irqchip/irq-msi-lib: >> # Prepare for PCI MSI/MSIX >> git bisect good 8c41ccec839c622b2d1be769a95405e4e9a4cb20 >> # first bad commit: [b5712bf89b4bbc5bcc9ebde8753ad222f1f68296] >> # irqchip/gic-v3-its: Provide MSI parent for PCI/MSI[-X] > > There were follow up fixes on this, so isolating this one is not really > conclusive. > > Is the problem still there on v6.16 and v6.17-rc1? > > Thanks, > > tglx