Commit Graph

12 Commits

Author SHA1 Message Date
Dan Carpenter 665aa8cdc4 ghes_edac: Use snprintf() to silence a static checker warning
My static checker complains because the "e->location" has up to 256
characters but we are copying it into the "pvt->detail_location" which
only has space for 240 characters.  That's not counting the surrounding
text and the "e->other_detail" string which can be over 80 characters
long.

I am not familiar with this code but presumably it normally works.
Let's add a limit though for safety.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Link: http://lkml.kernel.org/r/20140801082514.GD28869@mwanda
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-11-11 18:08:56 +01:00
Mauro Carvalho Chehab 37e59f876b [media, edac] Change my email address
There are several left overs with my old email address.
Remove their occurrences and add myself at CREDITS, to
allow people to be able to reach me on my new addresses.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-02-07 08:03:07 -02:00
Chen, Gong 56507694de EDAC, GHES: Update ghes error record info
In latest UEFI spec(by now it's 2.4) there are some new
fields for memory error reporting. Add these new fields for
ghes_edac interface.

Signed-off-by: Chen, Gong <gong.chen@linux.intel.com>
Cc: Mauro Carvalho Chehab <m.chehab@samsung.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2013-10-23 10:11:00 -07:00
Chen, Gong 147de14772 ACPI, APEI, CPER: Add UEFI 2.4 support for memory error
In latest UEFI spec(by now it is 2.4) memory error definition
for CPER (UEFI 2.4 Appendix N Common Platform Error Record)
adds some new fields. These fields help people to locate
memory error to an actual DIMM location.

Original-author: Tony Luck <tony.luck@intel.com>
Signed-off-by: Chen, Gong <gong.chen@linux.intel.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2013-10-23 10:10:20 -07:00
Wei Yongjun 5dae92a718 ghes_edac: fix to use list_for_each_entry_safe() when delete list items
Since we will remove items off the list using list_del() we need
to use a safe version of the list_for_each_entry() macro aptly named
list_for_each_entry_safe().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-26 10:05:35 -03:00
Mauro Carvalho Chehab 8ae8f50ad8 ghes_edac: Fix RAS tracing
With the current version of CPER, there's no way to associate an
error with the memory error. So, the error location in EDAC
layers is unused.

As CPER has its own idea about memory architectural layers, just
output whatever is there inside the driver's detail at the RAS
tracepoint.

The EDAC location keeps untouched, in the case that, in some future,
we could actually map the error into the dimm labels.

Now, the error message:

[   72.396625] {1}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 0
[   72.396627] {1}[Hardware Error]: APEI generic hardware error status
[   72.396628] {1}[Hardware Error]: severity: 2, corrected
[   72.396630] {1}[Hardware Error]: section: 0, severity: 2, corrected
[   72.396632] {1}[Hardware Error]: flags: 0x01
[   72.396634] {1}[Hardware Error]: primary
[   72.396635] {1}[Hardware Error]: section_type: memory error
[   72.396637] {1}[Hardware Error]: error_status: 0x0000000000000400
[   72.396638] {1}[Hardware Error]: node: 3
[   72.396639] {1}[Hardware Error]: card: 0
[   72.396640] {1}[Hardware Error]: module: 0
[   72.396641] {1}[Hardware Error]: device: 0
[   72.396643] {1}[Hardware Error]: error_type: 18, unknown
[   72.396666] EDAC MC0: 1 CE reserved error (18) on unknown label (node:3 card:0 module:0 page:0x0 offset:0x0 grain:0 syndrome:0x0 - status(0x0000000000000400): Storage error in DRAM memory)

Is properly represented on the trace event:

     kworker/0:2-584   [000] ....    72.396657: mc_event: 1 Corrected error: reserved error (18) on unknown label (mc:0 location👎-1:-1 address:0x00000000 grain:1 syndrome:0x00000000 APEI location: node:3 card:0 module:0 status(0x0000000000000400): Storage error in DRAM memory)

Tested on a 4 sockets E5-4650 Sandy Bridge machine.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-25 19:42:17 -03:00
Mauro Carvalho Chehab 689c9cd812 ghes_edac: Make it compliant with UEFI spec 2.3.1
The UEFI spec defines the memory error types ans the bits that
validate each field on the memory error record, at
Appendix N om items N.2.5 (Memory Error Section) and
N.2.11 (Error Status). Make the error description compliant with
it, only showing the valid fields.

The EDAC error log is now properly reporting the error:

[  281.556854] mce: [Hardware Error]: Machine check events logged
[  281.557042] {2}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 0
[  281.557044] {2}[Hardware Error]: APEI generic hardware error status
[  281.557046] {2}[Hardware Error]: severity: 2, corrected
[  281.557048] {2}[Hardware Error]: section: 0, severity: 2, corrected
[  281.557050] {2}[Hardware Error]: flags: 0x01
[  281.557052] {2}[Hardware Error]: primary
[  281.557053] {2}[Hardware Error]: section_type: memory error
[  281.557055] {2}[Hardware Error]: error_status: 0x0000000000000400
[  281.557056] {2}[Hardware Error]: node: 3
[  281.557057] {2}[Hardware Error]: card: 0
[  281.557058] {2}[Hardware Error]: module: 1
[  281.557059] {2}[Hardware Error]: device: 0
[  281.557061] {2}[Hardware Error]: error_type: 18, unknown
[  281.557067] EDAC DEBUG: ghes_edac_report_mem_error: error validation_bits: 0x000040b9
[  281.557084] EDAC MC0: 1 CE reserved error (18) on unknown label (node:3 card:0 module:1 page:0x0 offset:0x0 grain:0 syndrome:0x0 - status(0x0000000000000400): Storage error in DRAM memory)

Tested on a 4 CPUs E5-4650 Sandy Bridge machine.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-25 19:42:16 -03:00
Mauro Carvalho Chehab d2a6856614 ghes_edac: Improve driver's printk messages
Provide a better infrastructure for printk's inside the driver:
	- use edac_dbg() for debug messages;
	- standardize the usage of pr_info();
	- provide warning about the risk of relying on this
	  driver.

While here, changes the size of a fake memory to 1 page. This is
as good or as bad as 1000 pages, but it is easier for userspace to
detect, as I don't expect that any machine implementing GHES would
provide just 1 page available ;)

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Conflicts:
	drivers/edac/ghes_edac.c
2013-02-25 19:42:15 -03:00
Mauro Carvalho Chehab 5ee726db52 ghes_edac: Don't credit the same memory dimm twice
On my tests on a 4xE5-4650 CPU's system, the GHES
EDAC driver is called twice. As the SMBIOS DMI enumeration
call will seek for the entire DIMM sockets in the system, on
this machine, equipped with 128 GB of RAM, the memory is
displayed twice:

          +-----------------------+
          |    mc0    |    mc1    |
----------+-----------------------+
memory45: |  8192 MB  |  8192 MB  |
memory44: |     0 MB  |     0 MB  |
----------+-----------------------+
memory43: |     0 MB  |     0 MB  |
memory42: |  8192 MB  |  8192 MB  |
----------+-----------------------+
memory41: |     0 MB  |     0 MB  |
memory40: |     0 MB  |     0 MB  |
----------+-----------------------+
memory39: |  8192 MB  |  8192 MB  |
memory38: |     0 MB  |     0 MB  |
----------+-----------------------+
memory37: |     0 MB  |     0 MB  |
memory36: |  8192 MB  |  8192 MB  |
----------+-----------------------+
memory35: |     0 MB  |     0 MB  |
memory34: |     0 MB  |     0 MB  |
----------+-----------------------+
memory33: |  8192 MB  |  8192 MB  |
memory32: |     0 MB  |     0 MB  |
----------+-----------------------+
memory31: |     0 MB  |     0 MB  |
memory30: |  8192 MB  |  8192 MB  |
----------+-----------------------+
memory29: |     0 MB  |     0 MB  |
memory28: |     0 MB  |     0 MB  |
----------+-----------------------+
memory27: |  8192 MB  |  8192 MB  |
memory26: |     0 MB  |     0 MB  |
----------+-----------------------+
memory25: |     0 MB  |     0 MB  |
memory24: |  8192 MB  |  8192 MB  |
----------+-----------------------+
memory23: |     0 MB  |     0 MB  |
memory22: |     0 MB  |     0 MB  |
----------+-----------------------+
memory21: |  8192 MB  |  8192 MB  |
memory20: |     0 MB  |     0 MB  |
----------+-----------------------+
memory19: |     0 MB  |     0 MB  |
memory18: |  8192 MB  |  8192 MB  |
----------+-----------------------+
memory17: |     0 MB  |     0 MB  |
memory16: |     0 MB  |     0 MB  |
----------+-----------------------+
memory15: |  8192 MB  |  8192 MB  |
memory14: |     0 MB  |     0 MB  |
----------+-----------------------+
memory13: |     0 MB  |     0 MB  |
memory12: |  8192 MB  |  8192 MB  |
----------+-----------------------+
memory11: |     0 MB  |     0 MB  |
memory10: |     0 MB  |     0 MB  |
----------+-----------------------+
memory9:  |  8192 MB  |  8192 MB  |
memory8:  |     0 MB  |     0 MB  |
----------+-----------------------+
memory7:  |     0 MB  |     0 MB  |
memory6:  |  8192 MB  |  8192 MB  |
----------+-----------------------+
memory5:  |     0 MB  |     0 MB  |
memory4:  |     0 MB  |     0 MB  |
----------+-----------------------+
memory3:  |  8192 MB  |  8192 MB  |
memory2:  |     0 MB  |     0 MB  |
----------+-----------------------+
memory1:  |     0 MB  |     0 MB  |
memory0:  |  8192 MB  |  8192 MB  |
----------+-----------------------+

Total sum of 256 GB.

As there's no reliable way to credit DIMMS to the right memory
controller, just put everything on memory controller 0 (with should
always exist).

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-25 19:42:14 -03:00
Mauro Carvalho Chehab 32fa1f53c2 ghes_edac: do a better job of filling EDAC DIMM info
Instead of just faking a random value for the DIMM data, get
the information that it is available via DMI table.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-25 19:42:13 -03:00
Mauro Carvalho Chehab f04c62a703 ghes_edac: add support for reporting errors via EDAC
Now that the EDAC core is capable of just forward the errors via
the userspace API, add a report mechanism for the GHES errors.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-25 19:42:13 -03:00
Mauro Carvalho Chehab 77c5f5d2f2 ghes_edac: Register at EDAC core the BIOS report
Register GHES at EDAC MC core, in order to avoid other
drivers to also handle errors and mangle with error data.

The edac core will warrant that just one driver will be used,
so the first one to register (BIOS first) will be the one that
will be reporting the hardware errors.

For now, the EDAC driver does nothing but to register at the
EDAC core, preventing the hardware-driven mechanism to
interfere with GHES.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-25 19:42:12 -03:00