[Bug 220019] New: Host call trace and crash after boot guest with perf kvm stat record

[Bug 220019] New: Host call trace and crash after boot guest with perf kvm stat record

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=220019

            Bug ID: 220019
           Summary: Host call trace and crash after boot guest with perf
                    kvm stat record
           Product: Virtualization
           Version: unspecified
          Hardware: Intel
                OS: Linux
            Status: NEW
          Severity: high
          Priority: P3
         Component: kvm
          Assignee: virtualization_kvm@kernel-bugs.osdl.org
          Reporter: farrah.chen@intel.com
        Regression: No

Environment:

CPU: EMR/GNR

Host kernel:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git

Guest kernel: 6.15-rc2 release

QEMU: https://gitlab.com/qemu-project/qemu.git

Bug detail description: 

Host call trace and crash when boot guest with perf kvm stat record, host crash
in 1~2s after guest boot up

Reproduce steps: 

Boot guest with perf kvm stat record:

perf kvm stat record qemu-system-x86_64 \
    -name legacy,debug-threads=on \
    -accel kvm -smp 4 -m 4G -cpu host \
    -drive file=${img},if=none,id=virtio-disk0 \
    -serial stdio

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[Bug 220019] Host call trace and crash after boot guest with perf kvm stat record

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=220019

Sean Christopherson (seanjc@google.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |seanjc@google.com

--- Comment #1 from Sean Christopherson (seanjc@google.com) ---
Can you provide more information on the host crash?  Assuming this is a new
issue, can you bisect the host?

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[Bug 220019] Host call trace and crash after boot guest with perf kvm stat record

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=220019

Chen, Fan (farrah.chen@intel.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |farrah.chen@intel.com

--- Comment #2 from Chen, Fan (farrah.chen@intel.com) ---
Created attachment 307977
  --> https://bugzilla.kernel.org/attachment.cgi?id=307977&action=edit
Call Trace

Sorry, forgot to add the call trace log, attached

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[Bug 220019] Host call trace and crash after boot guest with perf kvm stat record

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=220019

--- Comment #3 from Chen, Fan (farrah.chen@intel.com) ---
And we found the fix patch has been posted already
https://lore.kernel.org/lkml/20250415131446.GN5600@noisy.programming.kicks-ass.net/,
verified this patch, it fixed the issue indeed.

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[Bug 220019] Host call trace and crash after boot guest with perf kvm stat record

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=220019

Chen, Fan (farrah.chen@intel.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |CODE_FIX

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