[Bug 220793] New: If Qemu VM using VHOST/VIRTIO quits kernel crashes

[bugzilla-daemon@kernel.org]

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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