diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2020-09-30 10:19:49 +0200 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-09-30 10:41:56 +0200 |
| commit | bc21a291fc11bbd60868c45b9f5a79ceed97fd4e (patch) | |
| tree | 382a0d3fc0c367d134c788e822cee5d60084e817 | |
| parent | 86a82ae0b5095ea24c55898a3f025791e7958b21 (diff) | |
x86/mce: Use idtentry_nmi_enter/exit()
The recent fix for NMI vs. IRQ state tracking missed to apply the cure
to the MCE handler.
Fixes: ba1f2b2eaa2a ("x86/entry: Fix NMI vs IRQ state tracking")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/87mu17ism2.fsf@nanos.tec.linutronix.de
| -rw-r--r-- | arch/x86/kernel/cpu/mce/core.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c index f43a78bde670..fc4f8c04bdb5 100644 --- a/arch/x86/kernel/cpu/mce/core.c +++ b/arch/x86/kernel/cpu/mce/core.c @@ -1904,6 +1904,8 @@ void (*machine_check_vector)(struct pt_regs *) = unexpected_machine_check; static __always_inline void exc_machine_check_kernel(struct pt_regs *regs) { + bool irq_state; + WARN_ON_ONCE(user_mode(regs)); /* @@ -1914,7 +1916,7 @@ static __always_inline void exc_machine_check_kernel(struct pt_regs *regs) mce_check_crashing_cpu()) return; - nmi_enter(); + irq_state = idtentry_enter_nmi(regs); /* * The call targets are marked noinstr, but objtool can't figure * that out because it's an indirect call. Annotate it. @@ -1925,7 +1927,7 @@ static __always_inline void exc_machine_check_kernel(struct pt_regs *regs) if (regs->flags & X86_EFLAGS_IF) trace_hardirqs_on_prepare(); instrumentation_end(); - nmi_exit(); + idtentry_exit_nmi(regs, irq_state); } static __always_inline void exc_machine_check_user(struct pt_regs *regs) |