* [PATCH V2 1/2] efi: print unrecognized CPER section
2015-09-08 21:29 [PATCH V2 0/2] process unrecognized CPER error section Jonathan (Zhixiong) Zhang
@ 2015-09-08 21:29 ` Jonathan (Zhixiong) Zhang
2015-09-08 21:56 ` Timur Tabi
2015-09-10 18:27 ` Borislav Petkov
2015-09-08 21:29 ` [PATCH V2 2/2] ras: acpi / apei: generate trace event for " Jonathan (Zhixiong) Zhang
1 sibling, 2 replies; 6+ messages in thread
From: Jonathan (Zhixiong) Zhang @ 2015-09-08 21:29 UTC (permalink / raw)
To: Matt Fleming, tony.luck, fu.wei, al.stone, rjw, mchehab, mingo,
bp, gong.chen
Cc: Jonathan (Zhixiong) Zhang, linux-efi, linux-kernel, linaro-acpi,
vgandhi, linux-acpi, timur
From: "Jonathan (Zhixiong) Zhang" <zjzhang@codeaurora.org>
UEFI spec allows for non-standard section in Common Platform Error
Record. This is defined in section N.2.3 of UEFI version 2.5.
Currently if the CPER section's type (UUID) does not match with
one of the section types that the kernel knows how to parse, the
section is skipped. Therefore, user is not able to see
such CPER data, for instace, error record of non-standard section.
For above mentioned case, this change prints out the raw data in
hex in dmesg buffer. Data length is taken from Error Data length
field of Generic Error Data Entry.
Following is a sample output from dmesg:
[ 115.771702] {1}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 2
[ 115.779042] {1}[Hardware Error]: It has been corrected by h/w and requires no further action
[ 115.787456] {1}[Hardware Error]: event severity: corrected
[ 115.792927] {1}[Hardware Error]: Error 0, type: corrected
[ 115.798415] {1}[Hardware Error]: fru_id: 00000000-0000-0000-0000-000000000000
[ 115.805596] {1}[Hardware Error]: fru_text:
[ 115.816105] {1}[Hardware Error]: section type: d2e2621c-f936-468d-0d84-15a4ed015c8b
[ 115.823880] {1}[Hardware Error]: section length: 88
[ 115.828779] {1}[Hardware Error]: 00000000: 01000001 00000002 5f434345 525f4543
[ 115.836153] {1}[Hardware Error]: 00000010: 0000574d 00000000 00000000 00000000
[ 115.843531] {1}[Hardware Error]: 00000020: 00000000 00000000 00000000 00000000
[ 115.850908] {1}[Hardware Error]: 00000030: 00000000 00000000 00000000 00000000
[ 115.858288] {1}[Hardware Error]: 00000040: fe800000 00000000 00000004 5f434345
[ 115.865665] {1}[Hardware Error]: 00000050: 525f4543 0000574d
Change-Id: I663a6e3ae6dcf68e4e389f76d555e9106ffee165
Signed-off-by: Jonathan (Zhixiong) Zhang <zjzhang@codeaurora.org>
---
drivers/firmware/efi/cper.c | 39 +++++++++++++++++++++++++++++++--------
1 file changed, 31 insertions(+), 8 deletions(-)
diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c
index d42537425438..8a58b2927408 100644
--- a/drivers/firmware/efi/cper.c
+++ b/drivers/firmware/efi/cper.c
@@ -32,12 +32,31 @@
#include <linux/acpi.h>
#include <linux/pci.h>
#include <linux/aer.h>
+#include <linux/printk.h>
#define INDENT_SP " "
+#define ROW_SIZE 16
+#define GROUP_SIZE 4
+
static char rcd_decode_str[CPER_REC_LEN];
/*
+ * cper_print_hex - print hex from a CPER data buffer
+ * @pfx: prefix for each line, including log level and prefix string
+ * @buf: buffer pointer
+ * @len: size of buffer
+ *
+ * print_hex_dump() expects log level and prefix string to be passed
+ * in two different paramters. Internally it concatenates them. In
+ * our case, those two are already concatenated in pfx.
+ */
+#define cper_print_hex(pfx, buf, len) \
+ print_hex_dump(pfx, "", \
+ DUMP_PREFIX_OFFSET, ROW_SIZE, GROUP_SIZE, \
+ buf, len, 0)
+
+/*
* CPER record ID need to be unique even after reboot, because record
* ID is used as index for ERST storage, while CPER records from
* multiple boot may co-exist in ERST.
@@ -392,7 +411,9 @@ static void cper_estatus_print_section(
uuid_le *sec_type = (uuid_le *)gdata->section_type;
__u16 severity;
char newpfx[64];
+ u32 len;
+ len = gdata->error_data_length;
severity = gdata->error_severity;
printk("%s""Error %d, type: %s\n", pfx, sec_no,
cper_severity_str(severity));
@@ -405,28 +426,30 @@ static void cper_estatus_print_section(
if (!uuid_le_cmp(*sec_type, CPER_SEC_PROC_GENERIC)) {
struct cper_sec_proc_generic *proc_err = (void *)(gdata + 1);
printk("%s""section_type: general processor error\n", newpfx);
- if (gdata->error_data_length >= sizeof(*proc_err))
+ if (len >= sizeof(*proc_err))
cper_print_proc_generic(newpfx, proc_err);
else
goto err_section_too_small;
} else if (!uuid_le_cmp(*sec_type, CPER_SEC_PLATFORM_MEM)) {
struct cper_sec_mem_err *mem_err = (void *)(gdata + 1);
printk("%s""section_type: memory error\n", newpfx);
- if (gdata->error_data_length >=
- sizeof(struct cper_sec_mem_err_old))
- cper_print_mem(newpfx, mem_err,
- gdata->error_data_length);
+ if (len >= sizeof(struct cper_sec_mem_err_old))
+ cper_print_mem(newpfx, mem_err, len);
else
goto err_section_too_small;
} else if (!uuid_le_cmp(*sec_type, CPER_SEC_PCIE)) {
struct cper_sec_pcie *pcie = (void *)(gdata + 1);
printk("%s""section_type: PCIe error\n", newpfx);
- if (gdata->error_data_length >= sizeof(*pcie))
+ if (len >= sizeof(*pcie))
cper_print_pcie(newpfx, pcie, gdata);
else
goto err_section_too_small;
- } else
- printk("%s""section type: unknown, %pUl\n", newpfx, sec_type);
+ } else {
+ const void *raw_err = gdata + 1;
+ printk("%ssection type: %pUl\n", pfx, sec_type);
+ printk("%ssection length: %d\n", pfx, len);
+ cper_print_hex(newpfx, raw_err, len);
+ }
return;
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH V2 2/2] ras: acpi / apei: generate trace event for unrecognized CPER section
2015-09-08 21:29 [PATCH V2 0/2] process unrecognized CPER error section Jonathan (Zhixiong) Zhang
2015-09-08 21:29 ` [PATCH V2 1/2] efi: print unrecognized CPER section Jonathan (Zhixiong) Zhang
@ 2015-09-08 21:29 ` Jonathan (Zhixiong) Zhang
2015-09-10 18:41 ` Borislav Petkov
1 sibling, 1 reply; 6+ messages in thread
From: Jonathan (Zhixiong) Zhang @ 2015-09-08 21:29 UTC (permalink / raw)
To: Matt Fleming, tony.luck, fu.wei, al.stone, rjw, mchehab, mingo,
bp, gong.chen
Cc: Jonathan (Zhixiong) Zhang, linux-efi, linux-kernel, linaro-acpi,
vgandhi, linux-acpi, timur
From: "Jonathan (Zhixiong) Zhang" <zjzhang@codeaurora.org>
UEFI spec allows for non-standard section in Common Platform Error
Record. This is defined in section N.2.3 of UEFI version 2.5.
Currently if the CPER section's type (UUID) does not match with
any section type that the kernel knows how to parse, trace event
is not generated for such section. And thus user is not able to know
happening of such hardware error, including error record of
non-standard section.
This commit generates a trace event which contains raw error data
for unrecognized CPER section.
Signed-off-by: Jonathan (Zhixiong) Zhang <zjzhang@codeaurora.org>
---
drivers/acpi/apei/ghes.c | 23 +++++++++++++++++++++--
drivers/ras/ras.c | 1 +
include/ras/ras_event.h | 45 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 67 insertions(+), 2 deletions(-)
diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index 23981ac1c6c2..a3aa3b046a37 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -48,6 +48,7 @@
#include <acpi/ghes.h>
#include <acpi/apei.h>
#include <asm/tlbflush.h>
+#include <ras/ras_event.h>
#include "apei-internal.h"
@@ -421,11 +422,23 @@ static void ghes_do_proc(struct ghes *ghes,
{
int sev, sec_sev;
struct acpi_hest_generic_data *gdata;
+ uuid_le *sec_type;
+ uuid_le *fru_id;
+ char *fru_text = "";
+ void *raw_err;
sev = ghes_severity(estatus->error_severity);
apei_estatus_for_each_section(estatus, gdata) {
sec_sev = ghes_severity(gdata->error_severity);
- if (!uuid_le_cmp(*(uuid_le *)gdata->section_type,
+ sec_type = (uuid_le *)gdata->section_type;
+ if (gdata->validation_bits & CPER_SEC_VALID_FRU_ID)
+ fru_id = (uuid_le *)gdata->fru_id;
+ else
+ fru_id = &NULL_UUID_LE;
+ if (gdata->validation_bits & CPER_SEC_VALID_FRU_TEXT)
+ fru_text = gdata->fru_text;
+
+ if (!uuid_le_cmp(*sec_type,
CPER_SEC_PLATFORM_MEM)) {
struct cper_sec_mem_err *mem_err;
mem_err = (struct cper_sec_mem_err *)(gdata+1);
@@ -435,7 +448,7 @@ static void ghes_do_proc(struct ghes *ghes,
ghes_handle_memory_failure(gdata, sev);
}
#ifdef CONFIG_ACPI_APEI_PCIEAER
- else if (!uuid_le_cmp(*(uuid_le *)gdata->section_type,
+ else if (!uuid_le_cmp(*sec_type,
CPER_SEC_PCIE)) {
struct cper_sec_pcie *pcie_err;
pcie_err = (struct cper_sec_pcie *)(gdata+1);
@@ -467,6 +480,12 @@ static void ghes_do_proc(struct ghes *ghes,
}
#endif
+ else {
+ raw_err = gdata + 1;
+ trace_raw_event(sec_type,
+ fru_id, fru_text, sec_sev,
+ raw_err, gdata->error_data_length);
+ }
}
}
diff --git a/drivers/ras/ras.c b/drivers/ras/ras.c
index b67dd362b7b6..6623ae366df9 100644
--- a/drivers/ras/ras.c
+++ b/drivers/ras/ras.c
@@ -27,3 +27,4 @@ subsys_initcall(ras_init);
EXPORT_TRACEPOINT_SYMBOL_GPL(extlog_mem_event);
#endif
EXPORT_TRACEPOINT_SYMBOL_GPL(mc_event);
+EXPORT_TRACEPOINT_SYMBOL_GPL(raw_event);
diff --git a/include/ras/ras_event.h b/include/ras/ras_event.h
index 1443d79e4fe6..fd357e9815f5 100644
--- a/include/ras/ras_event.h
+++ b/include/ras/ras_event.h
@@ -162,6 +162,51 @@ TRACE_EVENT(mc_event,
);
/*
+ * Raw Events Report
+ *
+ * This event is generated when hardware detected a hardware
+ * error event, which may be of non-standard section as defined
+ * in UEFI spec appendix "Common Platform Error Record", or may
+ * be of sections for which TRACE_EVENT is not defined.
+ *
+ */
+TRACE_EVENT(raw_event,
+
+ TP_PROTO(const uuid_le *sec_type,
+ const uuid_le *fru_id,
+ const char *fru_text,
+ u8 sev,
+ const u8 *err,
+ const u32 len),
+
+ TP_ARGS(sec_type, fru_id, fru_text, sev, err, len),
+
+ TP_STRUCT__entry(
+ __array(char, sec_type, 16)
+ __array(char, fru_id, 16)
+ __string(fru_text, fru_text)
+ __field(u8, sev)
+ __field(u32, len)
+ __dynamic_array(u8, buf, len)
+ ),
+
+ TP_fast_assign(
+ memcpy(__entry->sec_type, sec_type, sizeof(uuid_le));
+ memcpy(__entry->fru_id, fru_id, sizeof(uuid_le));
+ __assign_str(fru_text, fru_text);
+ __entry->sev = sev;
+ __entry->len = len;
+ memcpy(__get_dynamic_array(buf), err, len);
+ ),
+
+ TP_printk("severity: %d; sec type:%pU; FRU: %pU %s; data len:%d; raw data:%s",
+ __entry->sev, __entry->sec_type,
+ __entry->fru_id, __get_str(fru_text),
+ __entry->len,
+ __print_hex(__get_dynamic_array(buf), __entry->len))
+);
+
+/*
* PCIe AER Trace event
*
* These events are generated when hardware detects a corrected or
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
^ permalink raw reply related [flat|nested] 6+ messages in thread