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author | Michael Ellerman <mpe@ellerman.id.au> | 2017-04-03 15:29:34 +1000 |
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committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-04-03 16:12:00 +1000 |
commit | 63f44d65143976af9b28cf70ebe23f2c8b38677a (patch) | |
tree | 4edd63ac044b7aea15ba21450814f5fa87db03ac /arch/powerpc/platforms/powernv/opal.c | |
parent | 5b1d6fc2d4d927852214f2a7e2a8eb1bdce3b574 (diff) | |
download | linux-stable-63f44d65143976af9b28cf70ebe23f2c8b38677a.tar.gz linux-stable-63f44d65143976af9b28cf70ebe23f2c8b38677a.tar.bz2 linux-stable-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/platforms/powernv/opal.c')
-rw-r--r-- | arch/powerpc/platforms/powernv/opal.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c index e0f856bfbfe8..296c9426f72b 100644 --- a/arch/powerpc/platforms/powernv/opal.c +++ b/arch/powerpc/platforms/powernv/opal.c @@ -435,7 +435,7 @@ int opal_machine_check(struct pt_regs *regs) evt.version); return 0; } - machine_check_print_event_info(&evt); + machine_check_print_event_info(&evt, user_mode(regs)); if (opal_recover_mce(regs, &evt)) return 1; |