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| author | Michael Ellerman <mpe@ellerman.id.au> | 2017-04-03 15:29:34 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-04-03 16:12:00 +1000 |
| commit | 63f44d65143976af9b28cf70ebe23f2c8b38677a (patch) | |
| tree | 4edd63ac044b7aea15ba21450814f5fa87db03ac /arch/powerpc/include/asm/mce.h | |
| parent | 5b1d6fc2d4d927852214f2a7e2a8eb1bdce3b574 (diff) | |
| download | lwn-63f44d65143976af9b28cf70ebe23f2c8b38677a.tar.gz lwn-63f44d65143976af9b28cf70ebe23f2c8b38677a.zip | |
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 <mahesh@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/mce.h')
| -rw-r--r-- | arch/powerpc/include/asm/mce.h | 3 |
1 files changed, 2 insertions, 1 deletions
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__ */ |