From 63f44d65143976af9b28cf70ebe23f2c8b38677a Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Mon, 3 Apr 2017 15:29:34 +1000 Subject: powerpc/book3s: Print task info if we take a machine check in user mode For an MCE (Machine Check Exception) that hits while in user mode MSR(PR=1), print the task info to the console MCE error log. This may help to identify an application that triggered the MCE. After this patch the MCE console looks like: Severe Machine check interrupt [Recovered] NIP: [0000000010039778] PID: 762 Comm: ebizzy Initiator: CPU Error type: SLB [Multihit] Effective address: 0000000010039778 Severe Machine check interrupt [Not recovered] NIP: [0000000010039778] PID: 763 Comm: ebizzy Initiator: CPU Error type: UE [Page table walk ifetch] Effective address: 0000000010039778 ebizzy[763]: unhandled signal 7 at 0000000010039778 nip 0000000010039778 lr 0000000010001b44 code 30004 Signed-off-by: Mahesh Salgaonkar Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/mce.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'arch/powerpc/include/asm/mce.h') diff --git a/arch/powerpc/include/asm/mce.h b/arch/powerpc/include/asm/mce.h index e3498b446788..81eff8631434 100644 --- a/arch/powerpc/include/asm/mce.h +++ b/arch/powerpc/include/asm/mce.h @@ -207,7 +207,8 @@ extern void save_mce_event(struct pt_regs *regs, long handled, extern int get_mce_event(struct machine_check_event *mce, bool release); extern void release_mce_event(void); extern void machine_check_queue_event(void); -extern void machine_check_print_event_info(struct machine_check_event *evt); +extern void machine_check_print_event_info(struct machine_check_event *evt, + bool user_mode); extern uint64_t get_mce_fault_addr(struct machine_check_event *evt); #endif /* __ASM_PPC64_MCE_H__ */ -- cgit v1.2.3