| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Thu, 30 Sep 2010 13:01:46 +0200
From: Borislav Petkov <bp@...64.org>
To: <norsk5@...oo.com>
Cc: <linux-edac@...r.kernel.org>, <x86@...nel.org>,
<linux-kernel@...r.kernel.org>,
Borislav Petkov <borislav.petkov@....com>
Subject: [PATCH 5/8] EDAC, MCE: Pass complete MCE info to decoders
From: Borislav Petkov <borislav.petkov@....com>
... instead of the MCi_STATUS info only for improved handling of certain
types of errors later.
Signed-off-by: Borislav Petkov <borislav.petkov@....com>
---
drivers/edac/amd64_edac.c | 13 +++++--
drivers/edac/amd64_edac_dbg.c | 10 ++++-
drivers/edac/edac_mce_amd.c | 74 +++++++++++++++++++---------------------
drivers/edac/edac_mce_amd.h | 6 ++--
4 files changed, 56 insertions(+), 47 deletions(-)
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index e7d5d6b..76f7cc0 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -2073,11 +2073,18 @@ static inline void __amd64_decode_bus_error(struct mem_ctl_info *mci,
amd64_handle_ue(mci, info);
}
-void amd64_decode_bus_error(int node_id, struct err_regs *regs)
+void amd64_decode_bus_error(int node_id, struct mce *m, u32 nbcfg)
{
struct mem_ctl_info *mci = mci_lookup[node_id];
+ struct err_regs regs;
- __amd64_decode_bus_error(mci, regs);
+ regs.nbsl = (u32) m->status;
+ regs.nbsh = (u32)(m->status >> 32);
+ regs.nbeal = (u32) m->addr;
+ regs.nbeah = (u32)(m->addr >> 32);
+ regs.nbcfg = nbcfg;
+
+ __amd64_decode_bus_error(mci, ®s);
/*
* Check the UE bit of the NB status high register, if set generate some
@@ -2086,7 +2093,7 @@ void amd64_decode_bus_error(int node_id, struct err_regs *regs)
*
* FIXME: this should go somewhere else, if at all.
*/
- if (regs->nbsh & K8_NBSH_UC_ERR && !report_gart_errors)
+ if (regs.nbsh & K8_NBSH_UC_ERR && !report_gart_errors)
edac_mc_handle_ue_no_info(mci, "UE bit is set");
}
diff --git a/drivers/edac/amd64_edac_dbg.c b/drivers/edac/amd64_edac_dbg.c
index 22ef3fe..f6d5695 100644
--- a/drivers/edac/amd64_edac_dbg.c
+++ b/drivers/edac/amd64_edac_dbg.c
@@ -10,11 +10,14 @@ static ssize_t amd64_nbea_store(struct mem_ctl_info *mci, const char *data,
size_t count)
{
struct amd64_pvt *pvt = mci->pvt_info;
- unsigned long long value;
+ u64 value;
int ret = 0;
+ struct mce m;
ret = strict_strtoull(data, 16, &value);
if (ret != -EINVAL) {
+ struct err_regs *regs = &pvt->ctl_error_info;
+
debugf0("received NBEA= 0x%llx\n", value);
/* place the value into the virtual error packet */
@@ -22,9 +25,12 @@ static ssize_t amd64_nbea_store(struct mem_ctl_info *mci, const char *data,
value >>= 32;
pvt->ctl_error_info.nbeah = (u32) value;
+ m.addr = value;
+ m.status = regs->nbsl | ((u64)regs->nbsh << 32);
+
/* Process the Mapping request */
/* TODO: Add race prevention */
- amd_decode_nb_mce(pvt->mc_node_id, &pvt->ctl_error_info);
+ amd_decode_nb_mce(pvt->mc_node_id, &m, regs->nbcfg);
return count;
}
diff --git a/drivers/edac/edac_mce_amd.c b/drivers/edac/edac_mce_amd.c
index d0e850e..6cfa881 100644
--- a/drivers/edac/edac_mce_amd.c
+++ b/drivers/edac/edac_mce_amd.c
@@ -2,7 +2,7 @@
#include "edac_mce_amd.h"
static bool report_gart_errors;
-static void (*nb_bus_decoder)(int node_id, struct err_regs *regs);
+static void (*nb_bus_decoder)(int node_id, struct mce *m, u32 nbcfg);
void amd_report_gart_errors(bool v)
{
@@ -10,13 +10,13 @@ void amd_report_gart_errors(bool v)
}
EXPORT_SYMBOL_GPL(amd_report_gart_errors);
-void amd_register_ecc_decoder(void (*f)(int, struct err_regs *))
+void amd_register_ecc_decoder(void (*f)(int, struct mce *, u32))
{
nb_bus_decoder = f;
}
EXPORT_SYMBOL_GPL(amd_register_ecc_decoder);
-void amd_unregister_ecc_decoder(void (*f)(int, struct err_regs *))
+void amd_unregister_ecc_decoder(void (*f)(int, struct mce *, u32))
{
if (nb_bus_decoder) {
WARN_ON(nb_bus_decoder != f);
@@ -97,17 +97,17 @@ const char *ext_msgs[] = {
};
EXPORT_SYMBOL_GPL(ext_msgs);
-static void amd_decode_dc_mce(u64 mc0_status)
+static void amd_decode_dc_mce(struct mce *m)
{
- u32 ec = mc0_status & 0xffff;
- u32 xec = (mc0_status >> 16) & 0xf;
+ u32 ec = m->status & 0xffff;
+ u32 xec = (m->status >> 16) & 0xf;
pr_emerg(HW_ERR "Data Cache Error: ");
if (xec == 1 && TLB_ERROR(ec))
pr_cont(": %s TLB multimatch.\n", LL_MSG(ec));
else if (xec == 0) {
- if (mc0_status & (1ULL << 40))
+ if (m->status & (1ULL << 40))
pr_cont(" during Data Scrub.\n");
else if (TLB_ERROR(ec))
pr_cont(": %s TLB parity error.\n", LL_MSG(ec));
@@ -140,10 +140,10 @@ wrong_dc_mce:
pr_emerg(HW_ERR "Corrupted DC MCE info?\n");
}
-static void amd_decode_ic_mce(u64 mc1_status)
+static void amd_decode_ic_mce(struct mce *m)
{
- u32 ec = mc1_status & 0xffff;
- u32 xec = (mc1_status >> 16) & 0xf;
+ u32 ec = m->status & 0xffff;
+ u32 xec = (m->status >> 16) & 0xf;
pr_emerg(HW_ERR "Instruction Cache Error");
@@ -154,7 +154,7 @@ static void amd_decode_ic_mce(u64 mc1_status)
pr_cont(": %s TLB Parity error.\n", LL_MSG(ec));
else if (BUS_ERROR(ec)) {
if (boot_cpu_data.x86 == 0xf &&
- (mc1_status & (1ULL << 58)))
+ (m->status & BIT(58)))
pr_cont(" during system linefill.\n");
else
pr_cont(" during attempted NB data read.\n");
@@ -197,10 +197,10 @@ wrong_ic_mce:
pr_emerg(HW_ERR "Corrupted IC MCE info?\n");
}
-static void amd_decode_bu_mce(u64 mc2_status)
+static void amd_decode_bu_mce(struct mce *m)
{
- u32 ec = mc2_status & 0xffff;
- u32 xec = (mc2_status >> 16) & 0xf;
+ u32 ec = m->status & 0xffff;
+ u32 xec = (m->status >> 16) & 0xf;
pr_emerg(HW_ERR "Bus Unit Error");
@@ -239,10 +239,10 @@ wrong_bu_mce:
pr_emerg(HW_ERR "Corrupted BU MCE info?\n");
}
-static void amd_decode_ls_mce(u64 mc3_status)
+static void amd_decode_ls_mce(struct mce *m)
{
- u32 ec = mc3_status & 0xffff;
- u32 xec = (mc3_status >> 16) & 0xf;
+ u32 ec = m->status & 0xffff;
+ u32 xec = (m->status >> 16) & 0xf;
pr_emerg(HW_ERR "Load Store Error");
@@ -260,9 +260,11 @@ wrong_ls_mce:
pr_emerg(HW_ERR "Corrupted LS MCE info?\n");
}
-void amd_decode_nb_mce(int node_id, struct err_regs *regs)
+void amd_decode_nb_mce(int node_id, struct mce *m, u32 nbcfg)
{
- u32 ec = ERROR_CODE(regs->nbsl);
+ u32 ec = m->status & 0xffff;
+ u32 nbsh = (u32)(m->status >> 32);
+ u32 nbsl = (u32)m->status;
/*
* GART TLB error reporting is disabled by default. Bail out early.
@@ -278,10 +280,10 @@ void amd_decode_nb_mce(int node_id, struct err_regs *regs)
*/
if ((boot_cpu_data.x86 == 0x10) &&
(boot_cpu_data.x86_model > 7)) {
- if (regs->nbsh & K8_NBSH_ERR_CPU_VAL)
- pr_cont(", core: %u\n", (u8)(regs->nbsh & 0xf));
+ if (nbsh & K8_NBSH_ERR_CPU_VAL)
+ pr_cont(", core: %u\n", (u8)(nbsh & 0xf));
} else {
- u8 assoc_cpus = regs->nbsh & 0xf;
+ u8 assoc_cpus = nbsh & 0xf;
if (assoc_cpus > 0)
pr_cont(", core: %d", fls(assoc_cpus) - 1);
@@ -289,17 +291,17 @@ void amd_decode_nb_mce(int node_id, struct err_regs *regs)
pr_cont("\n");
}
- pr_emerg(HW_ERR "%s.\n", EXT_ERR_MSG(regs->nbsl));
+ pr_emerg(HW_ERR "%s.\n", EXT_ERR_MSG(nbsl));
if (BUS_ERROR(ec) && nb_bus_decoder)
- nb_bus_decoder(node_id, regs);
+ nb_bus_decoder(node_id, m, nbcfg);
}
EXPORT_SYMBOL_GPL(amd_decode_nb_mce);
-static void amd_decode_fr_mce(u64 mc5_status)
+static void amd_decode_fr_mce(struct mce *m)
{
/* we have only one error signature so match all fields at once. */
- if ((mc5_status & 0xffff) == 0x0f0f)
+ if ((m->status & 0xffff) == 0x0f0f)
pr_emerg(HW_ERR " FR Error: CPU Watchdog timer expire.\n");
else
pr_emerg(HW_ERR "Corrupted FR MCE info?\n");
@@ -326,7 +328,6 @@ static int amd_decode_mce(struct notifier_block *nb, unsigned long val,
void *data)
{
struct mce *m = (struct mce *)data;
- struct err_regs regs;
int node, ecc;
pr_emerg(HW_ERR "MC%d_STATUS: ", m->bank);
@@ -346,33 +347,28 @@ static int amd_decode_mce(struct notifier_block *nb, unsigned long val,
switch (m->bank) {
case 0:
- amd_decode_dc_mce(m->status);
+ amd_decode_dc_mce(m);
break;
case 1:
- amd_decode_ic_mce(m->status);
+ amd_decode_ic_mce(m);
break;
case 2:
- amd_decode_bu_mce(m->status);
+ amd_decode_bu_mce(m);
break;
case 3:
- amd_decode_ls_mce(m->status);
+ amd_decode_ls_mce(m);
break;
case 4:
- regs.nbsl = (u32) m->status;
- regs.nbsh = (u32)(m->status >> 32);
- regs.nbeal = (u32) m->addr;
- regs.nbeah = (u32)(m->addr >> 32);
- node = amd_get_nb_id(m->extcpu);
-
- amd_decode_nb_mce(node, ®s);
+ node = amd_get_nb_id(m->extcpu);
+ amd_decode_nb_mce(node, m, 0);
break;
case 5:
- amd_decode_fr_mce(m->status);
+ amd_decode_fr_mce(m);
break;
default:
diff --git a/drivers/edac/edac_mce_amd.h b/drivers/edac/edac_mce_amd.h
index 2ee499d..0fba0e7 100644
--- a/drivers/edac/edac_mce_amd.h
+++ b/drivers/edac/edac_mce_amd.h
@@ -63,8 +63,8 @@ struct err_regs {
void amd_report_gart_errors(bool);
-void amd_register_ecc_decoder(void (*f)(int, struct err_regs *));
-void amd_unregister_ecc_decoder(void (*f)(int, struct err_regs *));
-void amd_decode_nb_mce(int, struct err_regs *);
+void amd_register_ecc_decoder(void (*f)(int, struct mce *, u32));
+void amd_unregister_ecc_decoder(void (*f)(int, struct mce *, u32));
+void amd_decode_nb_mce(int, struct mce *, u32);
#endif /* _EDAC_MCE_AMD_H */
--
1.7.1
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists