diff options
| -rw-r--r-- | arch/x86/kernel/cpu/mce/core.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c index c11fc8d6a4c5..d788ccc5a35f 100644 --- a/arch/x86/kernel/cpu/mce/core.c +++ b/arch/x86/kernel/cpu/mce/core.c @@ -1459,6 +1459,14 @@ noinstr void do_machine_check(struct pt_regs *regs) if (worst != MCE_AR_SEVERITY && !kill_current_task) goto out; + /* + * Enable instrumentation around the external facilities like + * task_work_add() (via queue_task_work()), fixup_exception() etc. + * For now, that is. Fixing this properly would need a lot more involved + * reorganization. + */ + instrumentation_begin(); + /* Fault was in user mode and we need to take some action */ if ((m.cs & 3) == 3) { /* If this triggers there is no way to recover. Die hard. */ @@ -1487,6 +1495,9 @@ noinstr void do_machine_check(struct pt_regs *regs) if (m.kflags & MCE_IN_KERNEL_COPYIN) queue_task_work(&m, msg, kill_me_never); } + + instrumentation_end(); + out: mce_wrmsrl(MSR_IA32_MCG_STATUS, 0); } |