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 4AFD0274B5C for ; Wed, 19 Nov 2025 08:22:43 +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=1763540564; cv=none; b=k+1QzF5ry+gGYnY2QGSUMBt5JA8hXbS6ePab46232l27LWNndv74CYQexPhmGiXfcmTHe+lZkshZSxJSRi3M6G2sfA5RKHOfNtoKGHR2/kByRGnCSvu+hs3N3GNePEfnxXokjj5UpQyK3i4hVsFV7hfgekkzDYzGXdpvD3RrFAQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763540564; c=relaxed/simple; bh=3GxY8QGFgHmM0f7HNtA7tXdh0qFv/w2uIiY1qIuDNqA=; h=From:To:Subject:Date:Message-ID:Content-Type:MIME-Version; b=jCvt6ISg1TrcdnnDGQlzS3zzA3JalQcDez6bwrojYc88P7/MQrdM0cfy+0t+kaqQvHhnT1bIOkEBiXZPD+fPO3NDWVEHBGAnjqiXdFqHbrcqe99xflpsK+c/k7pB8JlmtS+tnod9GcSZoZtRo83EXZVensuSYTnk5c1VMGqEFGE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=iadfIbtD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="iadfIbtD" Received: by smtp.kernel.org (Postfix) with ESMTPS id B0973C2BCF5 for ; Wed, 19 Nov 2025 08:22:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1763540563; bh=3GxY8QGFgHmM0f7HNtA7tXdh0qFv/w2uIiY1qIuDNqA=; h=From:To:Subject:Date:From; b=iadfIbtDgLDzWCjITwNZbUNlGth9XK5iYAxxDagckTxNG65UHhR177GVaBLFNQtVz 30sK1sfrtLcmLN0XH2cQZSc+36m3Wkn5hv7lmQ15NlSba5WllUdGdbkDvG0Cag8I1v wmpzib6Df8ZWe8V+PnE93WlRBPg9LqWAFLblD9vk/truHJ0Lk29JjkrMSaAKiq3jcy 0ATXwy2xnDOBBvucI8RpHZhv9jrniQ+C94wNBQyKHEB4Ay7ceFWFWYf4KO8iyNFzpj PPu3V+CXGKM67iTQOMigsdyO5r7zvGpcrsIQ5U74GDYlqyaF2hMc6EpPNf8rsVJr1F uAiTIix1/SsoA== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 82DDBCAB785; Wed, 19 Nov 2025 08:22:43 +0000 (UTC) From: bugzilla-daemon@kernel.org To: kvm@vger.kernel.org Subject: [Bug 220793] New: If Qemu VM using VHOST/VIRTIO quits kernel crashes Date: Wed, 19 Nov 2025 08:22:41 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: AssignedTo virtualization_kvm@kernel-bugs.osdl.org X-Bugzilla-Product: Virtualization X-Bugzilla-Component: kvm X-Bugzilla-Version: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: high X-Bugzilla-Who: aliqrudi@gmail.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: virtualization_kvm@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter cf_regression attachments.created Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D220793 Bug ID: 220793 Summary: If Qemu VM using VHOST/VIRTIO quits kernel crashes Product: Virtualization Version: unspecified Hardware: Intel OS: Linux Status: NEW Severity: high Priority: P3 Component: kvm Assignee: virtualization_kvm@kernel-bugs.osdl.org Reporter: aliqrudi@gmail.com Regression: No Created attachment 308953 --> https://bugzilla.kernel.org/attachment.cgi?id=3D308953&action=3Dedit Kernel call trace The problem happens if a Qemu VM using vhost/virtio receives packets at a very high rate. After Qemu's quit command or when the VM is rebooted, the kernel panics. The problem is easy to reproduce; we tried different kernel versions, including 6.1.158 and the mainline, with the same result. We also reproduced the problem with both Mellanox ConnectX-6 and Intel XL710 NICs. The VM is run in Debian 12 using Qemu-7.2.19, on a machine with AMD Ryzen 9 processor and 192GB of memory. I have to note that while Qemu's quit command triggers the problem, if Qemu is killed with SIGTERM, nothing happens. Kernel's call trace is included at the end of this email. --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=