diff options
Diffstat (limited to 'kernel/drivers/hv/hv.c')
| -rw-r--r-- | kernel/drivers/hv/hv.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/kernel/drivers/hv/hv.c b/kernel/drivers/hv/hv.c index 6341be873..63194a9a7 100644 --- a/kernel/drivers/hv/hv.c +++ b/kernel/drivers/hv/hv.c @@ -293,8 +293,14 @@ void hv_cleanup(void) * Cleanup the TSC page based CS. */ if (ms_hyperv.features & HV_X64_MSR_REFERENCE_TSC_AVAILABLE) { - clocksource_change_rating(&hyperv_cs_tsc, 10); - clocksource_unregister(&hyperv_cs_tsc); + /* + * Crash can happen in an interrupt context and unregistering + * a clocksource is impossible and redundant in this case. + */ + if (!oops_in_progress) { + clocksource_change_rating(&hyperv_cs_tsc, 10); + clocksource_unregister(&hyperv_cs_tsc); + } hypercall_msr.as_uint64 = 0; wrmsrl(HV_X64_MSR_REFERENCE_TSC, hypercall_msr.as_uint64); |