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 [thread overview]
Message-ID: <bug-220793-28872@https.bugzilla.kernel.org/> (raw)
https://bugzilla.kernel.org/show_bug.cgi?id=220793
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=308953&action=edit
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.
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reply other threads:[~2025-11-19 8:22 UTC|newest]
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