With gcc 6.2.1 (gcc-6.2.1-2.fc24.x86_64) hitting an assert() in x86
code causes an infinite loop. This is due to a null dereference in
backtrace_frame. Let's not do that.
Signed-off-by: Andrew Jones <drjones@xxxxxxxxxx>
---
lib/x86/stack.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/x86/stack.c b/lib/x86/stack.c
index d75c0beb46fb..5ecd97ce90b9 100644
--- a/lib/x86/stack.c
+++ b/lib/x86/stack.c
@@ -13,7 +13,7 @@ int backtrace_frame(const void *frame, const void **return_addrs, int max_depth)
}
walking = 1;
- for (depth = 0; depth < max_depth; depth++) {
+ for (depth = 0; bp && depth < max_depth; depth++) {
return_addrs[depth] = (void *) bp[1];
if (return_addrs[depth] == 0)
break;
--
2.7.4
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