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Diffstat (limited to 'arch/arm64/kernel/traps.c')
-rw-r--r--arch/arm64/kernel/traps.c51
1 files changed, 46 insertions, 5 deletions
diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c
index 3d3588fcd1c7..bbb0fde2780e 100644
--- a/arch/arm64/kernel/traps.c
+++ b/arch/arm64/kernel/traps.c
@@ -662,17 +662,58 @@ asmlinkage void handle_bad_stack(struct pt_regs *regs)
}
#endif
-asmlinkage void do_serror(struct pt_regs *regs, unsigned int esr)
+void __noreturn arm64_serror_panic(struct pt_regs *regs, u32 esr)
{
- nmi_enter();
-
console_verbose();
pr_crit("SError Interrupt on CPU%d, code 0x%08x -- %s\n",
smp_processor_id(), esr, esr_get_class_string(esr));
- __show_regs(regs);
+ if (regs)
+ __show_regs(regs);
+
+ nmi_panic(regs, "Asynchronous SError Interrupt");
+
+ cpu_park_loop();
+ unreachable();
+}
+
+bool arm64_is_fatal_ras_serror(struct pt_regs *regs, unsigned int esr)
+{
+ u32 aet = arm64_ras_serror_get_severity(esr);
+
+ switch (aet) {
+ case ESR_ELx_AET_CE: /* corrected error */
+ case ESR_ELx_AET_UEO: /* restartable, not yet consumed */
+ /*
+ * The CPU can make progress. We may take UEO again as
+ * a more severe error.
+ */
+ return false;
+
+ case ESR_ELx_AET_UEU: /* Uncorrected Unrecoverable */
+ case ESR_ELx_AET_UER: /* Uncorrected Recoverable */
+ /*
+ * The CPU can't make progress. The exception may have
+ * been imprecise.
+ */
+ return true;
+
+ case ESR_ELx_AET_UC: /* Uncontainable or Uncategorized error */
+ default:
+ /* Error has been silently propagated */
+ arm64_serror_panic(regs, esr);
+ }
+}
+
+asmlinkage void do_serror(struct pt_regs *regs, unsigned int esr)
+{
+ nmi_enter();
+
+ /* non-RAS errors are not containable */
+ if (!arm64_is_ras_serror(esr) || arm64_is_fatal_ras_serror(regs, esr))
+ arm64_serror_panic(regs, esr);
- panic("Asynchronous SError Interrupt");
+ nmi_exit();
}
void __pte_error(const char *file, int line, unsigned long val)