[Bug 218792] New: Guest call trace with mwait enabled

bugzilla-daemon
2024-04-30T07:32:27Z

Bug ID: 218792
Summary: Guest call trace with mwait enabled
Product: Virtualization
Version: unspecified
Hardware: Intel
OS: Linux
Status: NEW
Severity: normal
Priority: P3
Component: kvm
Assignee: virtualization_kvm@kernel-bugs.osdl.org
Reporter: farrah.chen@intel.com
Regression: No

Environment:
host/guest kernel:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
e67572cd220(v6.9-rc6)
QEMU: https://gitlab.com/qemu-project/qemu.git master 5c6528dce86d
Host/Guest OS: Centos stream9/Ubuntu24.04

Bug detail description:
Boot Guest with mwait enabled(-overcommit cpu-pm=on), guest call trace
"unchecked MSR access error"

Reproduce steps:
img=centos9.qcow2
qemu-system-x86_64 \
-name legacy,debug-threads=on \
-overcommit cpu-pm=on \
-accel kvm -smp 8 -m 8G -cpu host \
-drive file=${img},if=none,id=virtio-disk0 \
-device virtio-blk-pci,drive=virtio-disk0 \
-device virtio-net-pci,netdev=nic0 -netdev
user,id=nic0,hostfwd=tcp::10023-:22 \
-vnc :1 -serial stdio

Guest boot with call trace:
[ 0.475344] unchecked MSR access error: RDMSR from 0xe2 at rIP:
0xffffffffb5a966b8 (native_read_msr+0x8/0x40)
[ 0.476465] Call Trace:
[ 0.476763] <TASK>
[ 0.477027] ? ex_handler_msr+0x128/0x140
[ 0.477460] ? fixup_exception+0x166/0x3c0
[ 0.477934] ? exc_general_protection+0xdc/0x3c0
[ 0.478481] ? asm_exc_general_protection+0x26/0x30
[ 0.479052] ? __pfx_intel_idle_init+0x10/0x10
[ 0.479587] ? native_read_msr+0x8/0x40
[ 0.480057] intel_idle_init_cstates_icpu.constprop.0+0x5e/0x560
[ 0.480747] ? __pfx_intel_idle_init+0x10/0x10
[ 0.481275] intel_idle_init+0x161/0x360
[ 0.481742] do_one_initcall+0x45/0x220
[ 0.482209] do_initcalls+0xac/0x130
[ 0.482643] kernel_init_freeable+0x134/0x1e0
[ 0.483159] ? __pfx_kernel_init+0x10/0x10
[ 0.483648] kernel_init+0x1a/0x1c0
[ 0.484087] ret_from_fork+0x31/0x50
[ 0.484541] ? __pfx_kernel_init+0x10/0x10
[ 0.485030] ret_from_fork_asm+0x1a/0x30
[ 0.485462] </TASK>