Fix for the handling of ARM64 kernel module per-cpu symbols. Without

the patch, if the debuginfo data of an ARM64 kernel module that contains a per-cpu section is loaded by "mod -s <module>" or "mod -S", commands such as "bt" or "sym" may incorrectly translate the module's virtual addresses to symbol names. ([email protected])
crash-utility · May 27, 2015 · 8b752d7 · 8b752d7
1 parent 3cbecbc
commit 8b752d7
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/symbols.c b/symbols.c
@@ -4443,7 +4443,12 @@ value_search_module(ulong value, ulong *offset)
 		*/
 		splast = NULL;
                 for ( ; sp <= sp_end; sp++) {
-                	if (value == sp->value) {
+			if (machine_type("ARM64") &&
+			    IN_MODULE_PERCPU(sp->value, lm) &&
+			    !IN_MODULE_PERCPU(value, lm)) 
+				continue;       
+
+			if (value == sp->value) {
 				if (MODULE_END(sp) || MODULE_INIT_END(sp))
 					break;