mm/heap: Skip memset backtrace buffer

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2023-01-06 01:28:30 +08:00 · 2023-01-06 01:28:30 +08:00 · 54de894e52
parent 70ecb4ef26
commit 54de894e52
1 changed files with 5 additions and 2 deletions
--- a/mm/mm_heap/mm.h
+++ b/mm/mm_heap/mm.h
@ -88,8 +88,11 @@
         tcb = nxsched_get_tcb(tmp->pid); \
         if ((heap)->mm_procfs.backtrace || (tcb && tcb->flags & TCB_FLAG_HEAP_DUMP)) \
           { \
-             memset(tmp->backtrace, 0, sizeof(tmp->backtrace)); \
-             backtrace(tmp->backtrace, CONFIG_MM_BACKTRACE); \
+             int n = backtrace(tmp->backtrace, CONFIG_MM_BACKTRACE); \
+             if (n < CONFIG_MM_BACKTRACE) \
+               { \
+                 tmp->backtrace[n] = 0; \
+               } \
           } \
         else \
           { \